| Message ID | 20180611072553.30050-1-ard.biesheuvel@linaro.org |
|---|---|
| State | Accepted |
| Commit | 4134f2bddcb68d2e20ed000cdf54abf3f1140904 |
| Headers | show |
| Series | [edk2,v3,1/2] MdePkg/BaseIoLibIntrinsic: make BaseIoLibIntrinsic safe for ArmVirt/KVM | expand |
On 06/11/18 09:25, Ard Biesheuvel wrote: > KVM on ARM refuses to decode load/store instructions used to perform > I/O to emulated devices, and instead relies on the exception syndrome > information to describe the operand register, access size, etc. > This is only possible for instructions that have a single input/output > register (as opposed to ones that increment the offset register, or > load/store pair instructions, etc). Otherwise, QEMU crashes with the > following error > > error: kvm run failed Function not implemented > R00=01010101 R01=00000008 R02=00000048 R03=08000820 > R04=00000120 R05=7faaa0e0 R06=7faaa0dc R07=7faaa0e8 > R08=7faaa0ec R09=7faaa088 R10=000000ff R11=00000080 > R12=ff000000 R13=7fccfe08 R14=7faa835f R15=7faa887c > PSR=800001f3 N--- T svc32 > QEMU: Terminated > > and KVM produces a warning such as the following in the kernel log > > kvm [17646]: load/store instruction decoding not implemented > > The IoLib implementation provided by MdePkg/Library/BaseIoLibIntrinsic > is based on C code, and when LTO is in effect, the MMIO accesses could > be merged with, e.g., manipulations of the loop counter, producing > opcodes that KVM does not support for emulated MMIO. > > So let's add a special ArmVirt flavor of this library that implements > that actual load/store operations in assembler, ensuring that the > instructions involved can be emulated by KVM. > > Contributed-under: TianoCore Contribution Agreement 1.1 > Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> > --- > v3: add missing prototype comments in IoLibArmVirt.c > remove mention of ASSERT () from description of internal asm routines > v2: add missing .uni file > split off ArmVirtPkg change > add VS2017 version of AArch64 asm file > add reference to MdePkg.dsc > > MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.S | 148 ++++ > MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.asm | 149 ++++ > MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.S | 145 ++++ > MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.asm | 149 ++++ > MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.inf | 52 ++ > MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.uni | 23 + > MdePkg/Library/BaseIoLibIntrinsic/IoLibArmVirt.c | 733 ++++++++++++++++++++ > MdePkg/MdePkg.dsc | 1 + > 8 files changed, 1400 insertions(+) Acked-by: Laszlo Ersek <lersek@redhat.com> _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
Reviewed-by: Liming Gao <liming.gao@intel.com> > -----Original Message----- > From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf Of Ard Biesheuvel > Sent: Monday, June 11, 2018 3:26 PM > To: edk2-devel@lists.01.org > Cc: Kinney, Michael D <michael.d.kinney@intel.com>; lersek@redhat.com; Gao, Liming <liming.gao@intel.com>; > leif.lindholm@linaro.org; Ard Biesheuvel <ard.biesheuvel@linaro.org> > Subject: [edk2] [PATCH v3 1/2] MdePkg/BaseIoLibIntrinsic: make BaseIoLibIntrinsic safe for ArmVirt/KVM > > KVM on ARM refuses to decode load/store instructions used to perform > I/O to emulated devices, and instead relies on the exception syndrome > information to describe the operand register, access size, etc. > This is only possible for instructions that have a single input/output > register (as opposed to ones that increment the offset register, or > load/store pair instructions, etc). Otherwise, QEMU crashes with the > following error > > error: kvm run failed Function not implemented > R00=01010101 R01=00000008 R02=00000048 R03=08000820 > R04=00000120 R05=7faaa0e0 R06=7faaa0dc R07=7faaa0e8 > R08=7faaa0ec R09=7faaa088 R10=000000ff R11=00000080 > R12=ff000000 R13=7fccfe08 R14=7faa835f R15=7faa887c > PSR=800001f3 N--- T svc32 > QEMU: Terminated > > and KVM produces a warning such as the following in the kernel log > > kvm [17646]: load/store instruction decoding not implemented > > The IoLib implementation provided by MdePkg/Library/BaseIoLibIntrinsic > is based on C code, and when LTO is in effect, the MMIO accesses could > be merged with, e.g., manipulations of the loop counter, producing > opcodes that KVM does not support for emulated MMIO. > > So let's add a special ArmVirt flavor of this library that implements > that actual load/store operations in assembler, ensuring that the > instructions involved can be emulated by KVM. > > Contributed-under: TianoCore Contribution Agreement 1.1 > Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> > --- > v3: add missing prototype comments in IoLibArmVirt.c > remove mention of ASSERT () from description of internal asm routines > v2: add missing .uni file > split off ArmVirtPkg change > add VS2017 version of AArch64 asm file > add reference to MdePkg.dsc > > MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.S | 148 ++++ > MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.asm | 149 ++++ > MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.S | 145 ++++ > MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.asm | 149 ++++ > MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.inf | 52 ++ > MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.uni | 23 + > MdePkg/Library/BaseIoLibIntrinsic/IoLibArmVirt.c | 733 ++++++++++++++++++++ > MdePkg/MdePkg.dsc | 1 + > 8 files changed, 1400 insertions(+) > > diff --git a/MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.S b/MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.S > new file mode 100644 > index 000000000000..85f59324270c > --- /dev/null > +++ b/MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.S > @@ -0,0 +1,148 @@ > +# > +# Copyright (c) 2014-2018, Linaro Limited. All rights reserved. > +# > +# This program and the accompanying materials are licensed and made available > +# under the terms and conditions of the BSD License which accompanies this > +# distribution. The full text of the license may be found at > +# http://opensource.org/licenses/bsd-license.php > +# > +# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, > +# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. > +# > +# > + > +.text > +.align 3 > + > +GCC_ASM_EXPORT(MmioRead8Internal) > +GCC_ASM_EXPORT(MmioWrite8Internal) > +GCC_ASM_EXPORT(MmioRead16Internal) > +GCC_ASM_EXPORT(MmioWrite16Internal) > +GCC_ASM_EXPORT(MmioRead32Internal) > +GCC_ASM_EXPORT(MmioWrite32Internal) > +GCC_ASM_EXPORT(MmioRead64Internal) > +GCC_ASM_EXPORT(MmioWrite64Internal) > + > +// > +// Reads an 8-bit MMIO register. > +// > +// Reads the 8-bit MMIO register specified by Address. The 8-bit read value is > +// returned. This function must guarantee that all MMIO read and write > +// operations are serialized. > +// > +// @param Address The MMIO register to read. > +// > +// @return The value read. > +// > +ASM_PFX(MmioRead8Internal): > + ldrb w0, [x0] > + dmb ld > + ret > + > +// > +// Writes an 8-bit MMIO register. > +// > +// Writes the 8-bit MMIO register specified by Address with the value specified > +// by Value and returns Value. This function must guarantee that all MMIO read > +// and write operations are serialized. > +// > +// @param Address The MMIO register to write. > +// @param Value The value to write to the MMIO register. > +// > +ASM_PFX(MmioWrite8Internal): > + dmb st > + strb w1, [x0] > + ret > + > +// > +// Reads a 16-bit MMIO register. > +// > +// Reads the 16-bit MMIO register specified by Address. The 16-bit read value is > +// returned. This function must guarantee that all MMIO read and write > +// operations are serialized. > +// > +// @param Address The MMIO register to read. > +// > +// @return The value read. > +// > +ASM_PFX(MmioRead16Internal): > + ldrh w0, [x0] > + dmb ld > + ret > + > +// > +// Writes a 16-bit MMIO register. > +// > +// Writes the 16-bit MMIO register specified by Address with the value specified > +// by Value and returns Value. This function must guarantee that all MMIO read > +// and write operations are serialized. > +// > +// @param Address The MMIO register to write. > +// @param Value The value to write to the MMIO register. > +// > +ASM_PFX(MmioWrite16Internal): > + dmb st > + strh w1, [x0] > + ret > + > +// > +// Reads a 32-bit MMIO register. > +// > +// Reads the 32-bit MMIO register specified by Address. The 32-bit read value is > +// returned. This function must guarantee that all MMIO read and write > +// operations are serialized. > +// > +// @param Address The MMIO register to read. > +// > +// @return The value read. > +// > +ASM_PFX(MmioRead32Internal): > + ldr w0, [x0] > + dmb ld > + ret > + > +// > +// Writes a 32-bit MMIO register. > +// > +// Writes the 32-bit MMIO register specified by Address with the value specified > +// by Value and returns Value. This function must guarantee that all MMIO read > +// and write operations are serialized. > +// > +// @param Address The MMIO register to write. > +// @param Value The value to write to the MMIO register. > +// > +ASM_PFX(MmioWrite32Internal): > + dmb st > + str w1, [x0] > + ret > + > +// > +// Reads a 64-bit MMIO register. > +// > +// Reads the 64-bit MMIO register specified by Address. The 64-bit read value is > +// returned. This function must guarantee that all MMIO read and write > +// operations are serialized. > +// > +// @param Address The MMIO register to read. > +// > +// @return The value read. > +// > +ASM_PFX(MmioRead64Internal): > + ldr x0, [x0] > + dmb ld > + ret > + > +// > +// Writes a 64-bit MMIO register. > +// > +// Writes the 64-bit MMIO register specified by Address with the value specified > +// by Value and returns Value. This function must guarantee that all MMIO read > +// and write operations are serialized. > +// > +// @param Address The MMIO register to write. > +// @param Value The value to write to the MMIO register. > +// > +ASM_PFX(MmioWrite64Internal): > + dmb st > + str x1, [x0] > + ret > diff --git a/MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.asm > b/MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.asm > new file mode 100644 > index 000000000000..bd235a5dd441 > --- /dev/null > +++ b/MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.asm > @@ -0,0 +1,149 @@ > +; > +; Copyright (c) 2014-2018, Linaro Limited. All rights reserved. > +; > +; This program and the accompanying materials are licensed and made available > +; under the terms and conditions of the BSD License which accompanies this > +; distribution. The full text of the license may be found at > +; http:;opensource.org/licenses/bsd-license.php > +; > +; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, > +; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. > +; > + > + > +AREA IoLibMmio, CODE, READONLY > + > +EXPORT MmioRead8Internal > +EXPORT MmioWrite8Internal > +EXPORT MmioRead16Internal > +EXPORT MmioWrite16Internal > +EXPORT MmioRead32Internal > +EXPORT MmioWrite32Internal > +EXPORT MmioRead64Internal > +EXPORT MmioWrite64Internal > + > +; > +; Reads an 8-bit MMIO register. > +; > +; Reads the 8-bit MMIO register specified by Address. The 8-bit read value is > +; returned. This function must guarantee that all MMIO read and write > +; operations are serialized. > +; > +; @param Address The MMIO register to read. > +; > +; @return The value read. > +; > +MmioRead8Internal > + ldrb w0, [x0] > + dmb ld > + ret > + > +; > +; Writes an 8-bit MMIO register. > +; > +; Writes the 8-bit MMIO register specified by Address with the value specified > +; by Value and returns Value. This function must guarantee that all MMIO read > +; and write operations are serialized. > +; > +; @param Address The MMIO register to write. > +; @param Value The value to write to the MMIO register. > +; > +MmioWrite8Internal > + dmb st > + strb w1, [x0] > + ret > + > +; > +; Reads a 16-bit MMIO register. > +; > +; Reads the 16-bit MMIO register specified by Address. The 16-bit read value is > +; returned. This function must guarantee that all MMIO read and write > +; operations are serialized. > +; > +; @param Address The MMIO register to read. > +; > +; @return The value read. > +; > +MmioRead16Internal > + ldrh w0, [x0] > + dmb ld > + ret > + > +; > +; Writes a 16-bit MMIO register. > +; > +; Writes the 16-bit MMIO register specified by Address with the value specified > +; by Value and returns Value. This function must guarantee that all MMIO read > +; and write operations are serialized. > +; > +; @param Address The MMIO register to write. > +; @param Value The value to write to the MMIO register. > +; > +MmioWrite16Internal > + dmb st > + strh w1, [x0] > + ret > + > +; > +; Reads a 32-bit MMIO register. > +; > +; Reads the 32-bit MMIO register specified by Address. The 32-bit read value is > +; returned. This function must guarantee that all MMIO read and write > +; operations are serialized. > +; > +; @param Address The MMIO register to read. > +; > +; @return The value read. > +; > +MmioRead32Internal > + ldr w0, [x0] > + dmb ld > + ret > + > +; > +; Writes a 32-bit MMIO register. > +; > +; Writes the 32-bit MMIO register specified by Address with the value specified > +; by Value and returns Value. This function must guarantee that all MMIO read > +; and write operations are serialized. > +; > +; @param Address The MMIO register to write. > +; @param Value The value to write to the MMIO register. > +; > +MmioWrite32Internal > + dmb st > + str w1, [x0] > + ret > + > +; > +; Reads a 64-bit MMIO register. > +; > +; Reads the 64-bit MMIO register specified by Address. The 64-bit read value is > +; returned. This function must guarantee that all MMIO read and write > +; operations are serialized. > +; > +; @param Address The MMIO register to read. > +; > +; @return The value read. > +; > +MmioRead64Internal > + ldr x0, [x0] > + dmb ld > + ret > + > +; > +; Writes a 64-bit MMIO register. > +; > +; Writes the 64-bit MMIO register specified by Address with the value specified > +; by Value and returns Value. This function must guarantee that all MMIO read > +; and write operations are serialized. > +; > +; @param Address The MMIO register to write. > +; @param Value The value to write to the MMIO register. > +; > +MmioWrite64Internal > + dmb st > + str x1, [x0] > + ret > + > + END > diff --git a/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.S b/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.S > new file mode 100644 > index 000000000000..1e91e87fb887 > --- /dev/null > +++ b/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.S > @@ -0,0 +1,145 @@ > +# > +# Copyright (c) 2014-2018, Linaro Limited. All rights reserved. > +# > +# This program and the accompanying materials are licensed and made available > +# under the terms and conditions of the BSD License which accompanies this > +# distribution. The full text of the license may be found at > +# http://opensource.org/licenses/bsd-license.php > +# > +# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, > +# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. > +# > +# > + > +GCC_ASM_EXPORT(MmioRead8Internal) > +GCC_ASM_EXPORT(MmioWrite8Internal) > +GCC_ASM_EXPORT(MmioRead16Internal) > +GCC_ASM_EXPORT(MmioWrite16Internal) > +GCC_ASM_EXPORT(MmioRead32Internal) > +GCC_ASM_EXPORT(MmioWrite32Internal) > +GCC_ASM_EXPORT(MmioRead64Internal) > +GCC_ASM_EXPORT(MmioWrite64Internal) > + > +// > +// Reads an 8-bit MMIO register. > +// > +// Reads the 8-bit MMIO register specified by Address. The 8-bit read value is > +// returned. This function must guarantee that all MMIO read and write > +// operations are serialized. > +// > +// @param Address The MMIO register to read. > +// > +// @return The value read. > +// > +ASM_PFX(MmioRead8Internal): > + ldrb r0, [r0] > + dmb > + bx lr > + > +// > +// Writes an 8-bit MMIO register. > +// > +// Writes the 8-bit MMIO register specified by Address with the value specified > +// by Value and returns Value. This function must guarantee that all MMIO read > +// and write operations are serialized. > +// > +// @param Address The MMIO register to write. > +// @param Value The value to write to the MMIO register. > +// > +ASM_PFX(MmioWrite8Internal): > + dmb st > + strb r1, [r0] > + bx lr > + > +// > +// Reads a 16-bit MMIO register. > +// > +// Reads the 16-bit MMIO register specified by Address. The 16-bit read value is > +// returned. This function must guarantee that all MMIO read and write > +// operations are serialized. > +// > +// @param Address The MMIO register to read. > +// > +// @return The value read. > +// > +ASM_PFX(MmioRead16Internal): > + ldrh r0, [r0] > + dmb > + bx lr > + > +// > +// Writes a 16-bit MMIO register. > +// > +// Writes the 16-bit MMIO register specified by Address with the value specified > +// by Value and returns Value. This function must guarantee that all MMIO read > +// and write operations are serialized. > +// > +// @param Address The MMIO register to write. > +// @param Value The value to write to the MMIO register. > +// > +ASM_PFX(MmioWrite16Internal): > + dmb st > + strh r1, [r0] > + bx lr > + > +// > +// Reads a 32-bit MMIO register. > +// > +// Reads the 32-bit MMIO register specified by Address. The 32-bit read value is > +// returned. This function must guarantee that all MMIO read and write > +// operations are serialized. > +// > +// @param Address The MMIO register to read. > +// > +// @return The value read. > +// > +ASM_PFX(MmioRead32Internal): > + ldr r0, [r0] > + dmb > + bx lr > + > +// > +// Writes a 32-bit MMIO register. > +// > +// Writes the 32-bit MMIO register specified by Address with the value specified > +// by Value and returns Value. This function must guarantee that all MMIO read > +// and write operations are serialized. > +// > +// @param Address The MMIO register to write. > +// @param Value The value to write to the MMIO register. > +// > +ASM_PFX(MmioWrite32Internal): > + dmb st > + str r1, [r0] > + bx lr > + > +// > +// Reads a 64-bit MMIO register. > +// > +// Reads the 64-bit MMIO register specified by Address. The 64-bit read value is > +// returned. This function must guarantee that all MMIO read and write > +// operations are serialized. > +// > +// @param Address The MMIO register to read. > +// > +// @return The value read. > +// > +ASM_PFX(MmioRead64Internal): > + ldrd r0, r1, [r0] > + dmb > + bx lr > + > +// > +// Writes a 64-bit MMIO register. > +// > +// Writes the 64-bit MMIO register specified by Address with the value specified > +// by Value and returns Value. This function must guarantee that all MMIO read > +// and write operations are serialized. > +// > +// @param Address The MMIO register to write. > +// @param Value The value to write to the MMIO register. > +// > +ASM_PFX(MmioWrite64Internal): > + dmb st > + strd r2, r3, [r0] > + bx lr > diff --git a/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.asm b/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.asm > new file mode 100644 > index 000000000000..cff99b86a99c > --- /dev/null > +++ b/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.asm > @@ -0,0 +1,149 @@ > +; > +; Copyright (c) 2014-2018, Linaro Limited. All rights reserved. > +; > +; This program and the accompanying materials are licensed and made available > +; under the terms and conditions of the BSD License which accompanies this > +; distribution. The full text of the license may be found at > +; http:;opensource.org/licenses/bsd-license.php > +; > +; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, > +; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. > +; > + > + > +AREA IoLibMmio, CODE, READONLY > + > +EXPORT MmioRead8Internal > +EXPORT MmioWrite8Internal > +EXPORT MmioRead16Internal > +EXPORT MmioWrite16Internal > +EXPORT MmioRead32Internal > +EXPORT MmioWrite32Internal > +EXPORT MmioRead64Internal > +EXPORT MmioWrite64Internal > + > +; > +; Reads an 8-bit MMIO register. > +; > +; Reads the 8-bit MMIO register specified by Address. The 8-bit read value is > +; returned. This function must guarantee that all MMIO read and write > +; operations are serialized. > +; > +; @param Address The MMIO register to read. > +; > +; @return The value read. > +; > +MmioRead8Internal > + ldrb r0, [r0] > + dmb > + bx lr > + > +; > +; Writes an 8-bit MMIO register. > +; > +; Writes the 8-bit MMIO register specified by Address with the value specified > +; by Value and returns Value. This function must guarantee that all MMIO read > +; and write operations are serialized. > +; > +; @param Address The MMIO register to write. > +; @param Value The value to write to the MMIO register. > +; > +MmioWrite8Internal > + dmb st > + strb r1, [r0] > + bx lr > + > +; > +; Reads a 16-bit MMIO register. > +; > +; Reads the 16-bit MMIO register specified by Address. The 16-bit read value is > +; returned. This function must guarantee that all MMIO read and write > +; operations are serialized. > +; > +; @param Address The MMIO register to read. > +; > +; @return The value read. > +; > +MmioRead16Internal > + ldrh r0, [r0] > + dmb > + bx lr > + > +; > +; Writes a 16-bit MMIO register. > +; > +; Writes the 16-bit MMIO register specified by Address with the value specified > +; by Value and returns Value. This function must guarantee that all MMIO read > +; and write operations are serialized. > +; > +; @param Address The MMIO register to write. > +; @param Value The value to write to the MMIO register. > +; > +MmioWrite16Internal > + dmb st > + strh r1, [r0] > + bx lr > + > +; > +; Reads a 32-bit MMIO register. > +; > +; Reads the 32-bit MMIO register specified by Address. The 32-bit read value is > +; returned. This function must guarantee that all MMIO read and write > +; operations are serialized. > +; > +; @param Address The MMIO register to read. > +; > +; @return The value read. > +; > +MmioRead32Internal > + ldr r0, [r0] > + dmb > + bx lr > + > +; > +; Writes a 32-bit MMIO register. > +; > +; Writes the 32-bit MMIO register specified by Address with the value specified > +; by Value and returns Value. This function must guarantee that all MMIO read > +; and write operations are serialized. > +; > +; @param Address The MMIO register to write. > +; @param Value The value to write to the MMIO register. > +; > +MmioWrite32Internal > + dmb st > + str r1, [r0] > + bx lr > + > +; > +; Reads a 64-bit MMIO register. > +; > +; Reads the 64-bit MMIO register specified by Address. The 64-bit read value is > +; returned. This function must guarantee that all MMIO read and write > +; operations are serialized. > +; > +; @param Address The MMIO register to read. > +; > +; @return The value read. > +; > +MmioRead64Internal > + ldrd r0, r1, [r0] > + dmb > + bx lr > + > +; > +; Writes a 64-bit MMIO register. > +; > +; Writes the 64-bit MMIO register specified by Address with the value specified > +; by Value and returns Value. This function must guarantee that all MMIO read > +; and write operations are serialized. > +; > +; @param Address The MMIO register to write. > +; @param Value The value to write to the MMIO register. > +; > +MmioWrite64Internal > + dmb st > + strd r2, r3, [r0] > + bx lr > + > + END > diff --git a/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.inf > b/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.inf > new file mode 100644 > index 000000000000..1e39ad533fac > --- /dev/null > +++ b/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.inf > @@ -0,0 +1,52 @@ > +## @file > +# Instance of I/O Library using KVM/ARM safe assembler routines > +# > +# Copyright (c) 2007 - 2015, Intel Corporation. All rights reserved.<BR> > +# Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> > +# Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR> > +# Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR> > +# > +# This program and the accompanying materials are licensed and made available > +# under the terms and conditions of the BSD License which accompanies this > +# distribution. The full text of the license may be found at > +# http://opensource.org/licenses/bsd-license.php. > +# > +# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, > +# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. > +# > +## > + > +[Defines] > + INF_VERSION = 0x0001001A > + BASE_NAME = BaseIoLibIntrinsicArmVirt > + MODULE_UNI_FILE = BaseIoLibIntrinsicArmVirt.uni > + FILE_GUID = 217102b4-b465-4a1d-a2de-93dd385ec480 > + MODULE_TYPE = BASE > + VERSION_STRING = 1.0 > + LIBRARY_CLASS = IoLib > + > +# > +# VALID_ARCHITECTURES = ARM AARCH64 > +# > + > +[Sources] > + IoLibMmioBuffer.c > + BaseIoLibIntrinsicInternal.h > + IoHighLevel.c > + > +[Sources.ARM] > + IoLibArmVirt.c > + Arm/ArmVirtMmio.S | GCC > + Arm/ArmVirtMmio.asm | RVCT > + > +[Sources.AARCH64] > + IoLibArmVirt.c > + AArch64/ArmVirtMmio.S | GCC > + AArch64/ArmVirtMmio.asm | MSFT > + > +[Packages] > + MdePkg/MdePkg.dec > + > +[LibraryClasses] > + DebugLib > + BaseLib > diff --git a/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.uni > b/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.uni > new file mode 100644 > index 000000000000..a1109c520453 > --- /dev/null > +++ b/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.uni > @@ -0,0 +1,23 @@ > +// /** @file > +// Instance of I/O Library using KVM/ARM safe assembler routines > +// > +// Copyright (c) 2007 - 2015, Intel Corporation. All rights reserved.<BR> > +// Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> > +// Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR> > +// Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR> > +// > +// This program and the accompanying materials are licensed and made available > +// under the terms and conditions of the BSD License which accompanies this > +// distribution. The full text of the license may be found at > +// http://opensource.org/licenses/bsd-license.php. > +// > +// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, > +// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. > +// > +// **/ > + > + > +#string STR_MODULE_ABSTRACT #language en-US "Instance of I/O Library using KVM/ARM safe assembler routines" > + > +#string STR_MODULE_DESCRIPTION #language en-US "I/O Library that uses assembler routines to perform MMIO > accesses, to prevent link time code generation under LTO from emitting instructions that KVM on ARM cannot deal with." > + > diff --git a/MdePkg/Library/BaseIoLibIntrinsic/IoLibArmVirt.c b/MdePkg/Library/BaseIoLibIntrinsic/IoLibArmVirt.c > new file mode 100644 > index 000000000000..1a1b77967d55 > --- /dev/null > +++ b/MdePkg/Library/BaseIoLibIntrinsic/IoLibArmVirt.c > @@ -0,0 +1,733 @@ > +/** @file > + I/O Library for ARM. > + > + Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR> > + Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> > + Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR> > + Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR> > + > + This program and the accompanying materials are licensed and made available > + under the terms and conditions of the BSD License which accompanies this > + distribution. The full text of the license may be found at > + http://opensource.org/licenses/bsd-license.php. > + > + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, > + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. > + > +**/ > + > +#include "BaseIoLibIntrinsicInternal.h" > + > +/** > + Reads an 8-bit MMIO register. > + > + Reads the 8-bit MMIO register specified by Address. The 8-bit read value is > + returned. This function must guarantee that all MMIO read and write > + operations are serialized. > + > + @param Address The MMIO register to read. > + > + @return The value read. > + > +**/ > +UINT8 > +EFIAPI > +MmioRead8Internal ( > + IN UINTN Address > + ); > + > +/** > + Writes an 8-bit MMIO register. > + > + Writes the 8-bit MMIO register specified by Address with the value specified > + by Value and returns Value. This function must guarantee that all MMIO read > + and write operations are serialized. > + > + @param Address The MMIO register to write. > + @param Value The value to write to the MMIO register. > + > +**/ > +VOID > +EFIAPI > +MmioWrite8Internal ( > + IN UINTN Address, > + IN UINT8 Value > + ); > + > +/** > + Reads a 16-bit MMIO register. > + > + Reads the 16-bit MMIO register specified by Address. The 16-bit read value is > + returned. This function must guarantee that all MMIO read and write > + operations are serialized. > + > + @param Address The MMIO register to read. > + > + @return The value read. > + > +**/ > +UINT16 > +EFIAPI > +MmioRead16Internal ( > + IN UINTN Address > + ); > + > +/** > + Writes a 16-bit MMIO register. > + > + Writes the 16-bit MMIO register specified by Address with the value specified > + by Value and returns Value. This function must guarantee that all MMIO read > + and write operations are serialized. > + > + @param Address The MMIO register to write. > + @param Value The value to write to the MMIO register. > + > +**/ > +VOID > +EFIAPI > +MmioWrite16Internal ( > + IN UINTN Address, > + IN UINT16 Value > + ); > + > +/** > + Reads a 32-bit MMIO register. > + > + Reads the 32-bit MMIO register specified by Address. The 32-bit read value is > + returned. This function must guarantee that all MMIO read and write > + operations are serialized. > + > + @param Address The MMIO register to read. > + > + @return The value read. > + > +**/ > +UINT32 > +EFIAPI > +MmioRead32Internal ( > + IN UINTN Address > + ); > + > +/** > + Writes a 32-bit MMIO register. > + > + Writes the 32-bit MMIO register specified by Address with the value specified > + by Value and returns Value. This function must guarantee that all MMIO read > + and write operations are serialized. > + > + @param Address The MMIO register to write. > + @param Value The value to write to the MMIO register. > + > +**/ > +VOID > +EFIAPI > +MmioWrite32Internal ( > + IN UINTN Address, > + IN UINT32 Value > + ); > + > +/** > + Reads a 64-bit MMIO register. > + > + Reads the 64-bit MMIO register specified by Address. The 64-bit read value is > + returned. This function must guarantee that all MMIO read and write > + operations are serialized. > + > + @param Address The MMIO register to read. > + > + @return The value read. > + > +**/ > +UINT64 > +EFIAPI > +MmioRead64Internal ( > + IN UINTN Address > + ); > + > +/** > + Writes a 64-bit MMIO register. > + > + Writes the 64-bit MMIO register specified by Address with the value specified > + by Value and returns Value. This function must guarantee that all MMIO read > + and write operations are serialized. > + > + @param Address The MMIO register to write. > + @param Value The value to write to the MMIO register. > + > +**/ > +VOID > +EFIAPI > +MmioWrite64Internal ( > + IN UINTN Address, > + IN UINT64 Value > + ); > + > +/** > + Reads an 8-bit I/O port. > + > + Reads the 8-bit I/O port specified by Port. The 8-bit read value is returned. > + This function must guarantee that all I/O read and write operations are > + serialized. > + > + If 8-bit I/O port operations are not supported, then ASSERT(). > + > + @param Port The I/O port to read. > + > + @return The value read. > + > +**/ > +UINT8 > +EFIAPI > +IoRead8 ( > + IN UINTN Port > + ) > +{ > + ASSERT (FALSE); > + return 0; > +} > + > +/** > + Writes an 8-bit I/O port. > + > + Writes the 8-bit I/O port specified by Port with the value specified by Value > + and returns Value. This function must guarantee that all I/O read and write > + operations are serialized. > + > + If 8-bit I/O port operations are not supported, then ASSERT(). > + > + @param Port The I/O port to write. > + @param Value The value to write to the I/O port. > + > + @return The value written the I/O port. > + > +**/ > +UINT8 > +EFIAPI > +IoWrite8 ( > + IN UINTN Port, > + IN UINT8 Value > + ) > +{ > + ASSERT (FALSE); > + return Value; > +} > + > +/** > + Reads a 16-bit I/O port. > + > + Reads the 16-bit I/O port specified by Port. The 16-bit read value is returned. > + This function must guarantee that all I/O read and write operations are > + serialized. > + > + If 16-bit I/O port operations are not supported, then ASSERT(). > + > + @param Port The I/O port to read. > + > + @return The value read. > + > +**/ > +UINT16 > +EFIAPI > +IoRead16 ( > + IN UINTN Port > + ) > +{ > + ASSERT (FALSE); > + return 0; > +} > + > +/** > + Writes a 16-bit I/O port. > + > + Writes the 16-bit I/O port specified by Port with the value specified by Value > + and returns Value. This function must guarantee that all I/O read and write > + operations are serialized. > + > + If 16-bit I/O port operations are not supported, then ASSERT(). > + > + @param Port The I/O port to write. > + @param Value The value to write to the I/O port. > + > + @return The value written the I/O port. > + > +**/ > +UINT16 > +EFIAPI > +IoWrite16 ( > + IN UINTN Port, > + IN UINT16 Value > + ) > +{ > + ASSERT (FALSE); > + return Value; > +} > + > +/** > + Reads a 32-bit I/O port. > + > + Reads the 32-bit I/O port specified by Port. The 32-bit read value is returned. > + This function must guarantee that all I/O read and write operations are > + serialized. > + > + If 32-bit I/O port operations are not supported, then ASSERT(). > + > + @param Port The I/O port to read. > + > + @return The value read. > + > +**/ > +UINT32 > +EFIAPI > +IoRead32 ( > + IN UINTN Port > + ) > +{ > + ASSERT (FALSE); > + return 0; > +} > + > +/** > + Writes a 32-bit I/O port. > + > + Writes the 32-bit I/O port specified by Port with the value specified by Value > + and returns Value. This function must guarantee that all I/O read and write > + operations are serialized. > + > + If 32-bit I/O port operations are not supported, then ASSERT(). > + > + @param Port The I/O port to write. > + @param Value The value to write to the I/O port. > + > + @return The value written the I/O port. > + > +**/ > +UINT32 > +EFIAPI > +IoWrite32 ( > + IN UINTN Port, > + IN UINT32 Value > + ) > +{ > + ASSERT (FALSE); > + return Value; > +} > + > +/** > + Reads a 64-bit I/O port. > + > + Reads the 64-bit I/O port specified by Port. The 64-bit read value is returned. > + This function must guarantee that all I/O read and write operations are > + serialized. > + > + If 64-bit I/O port operations are not supported, then ASSERT(). > + If Port is not aligned on a 64-bit boundary, then ASSERT(). > + > + @param Port The I/O port to read. > + > + @return The value read. > + > +**/ > +UINT64 > +EFIAPI > +IoRead64 ( > + IN UINTN Port > + ) > +{ > + ASSERT (FALSE); > + return 0; > +} > + > +/** > + Writes a 64-bit I/O port. > + > + Writes the 64-bit I/O port specified by Port with the value specified by Value > + and returns Value. This function must guarantee that all I/O read and write > + operations are serialized. > + > + If 64-bit I/O port operations are not supported, then ASSERT(). > + If Port is not aligned on a 64-bit boundary, then ASSERT(). > + > + @param Port The I/O port to write. > + @param Value The value to write to the I/O port. > + > + @return The value written to the I/O port. > + > +**/ > +UINT64 > +EFIAPI > +IoWrite64 ( > + IN UINTN Port, > + IN UINT64 Value > + ) > +{ > + ASSERT (FALSE); > + return 0; > +} > + > +/** > + Reads an 8-bit I/O port fifo into a block of memory. > + > + Reads the 8-bit I/O fifo port specified by Port. > + The port is read Count times, and the read data is > + stored in the provided Buffer. > + > + This function must guarantee that all I/O read and write operations are > + serialized. > + > + If 8-bit I/O port operations are not supported, then ASSERT(). > + > + @param Port The I/O port to read. > + @param Count The number of times to read I/O port. > + @param Buffer The buffer to store the read data into. > + > +**/ > +VOID > +EFIAPI > +IoReadFifo8 ( > + IN UINTN Port, > + IN UINTN Count, > + OUT VOID *Buffer > + ) > +{ > + ASSERT (FALSE); > +} > + > +/** > + Writes a block of memory into an 8-bit I/O port fifo. > + > + Writes the 8-bit I/O fifo port specified by Port. > + The port is written Count times, and the write data is > + retrieved from the provided Buffer. > + > + This function must guarantee that all I/O write and write operations are > + serialized. > + > + If 8-bit I/O port operations are not supported, then ASSERT(). > + > + @param Port The I/O port to write. > + @param Count The number of times to write I/O port. > + @param Buffer The buffer to retrieve the write data from. > + > +**/ > +VOID > +EFIAPI > +IoWriteFifo8 ( > + IN UINTN Port, > + IN UINTN Count, > + IN VOID *Buffer > + ) > +{ > + ASSERT (FALSE); > +} > + > +/** > + Reads a 16-bit I/O port fifo into a block of memory. > + > + Reads the 16-bit I/O fifo port specified by Port. > + The port is read Count times, and the read data is > + stored in the provided Buffer. > + > + This function must guarantee that all I/O read and write operations are > + serialized. > + > + If 16-bit I/O port operations are not supported, then ASSERT(). > + > + @param Port The I/O port to read. > + @param Count The number of times to read I/O port. > + @param Buffer The buffer to store the read data into. > + > +**/ > +VOID > +EFIAPI > +IoReadFifo16 ( > + IN UINTN Port, > + IN UINTN Count, > + OUT VOID *Buffer > + ) > +{ > + ASSERT (FALSE); > +} > + > +/** > + Writes a block of memory into a 16-bit I/O port fifo. > + > + Writes the 16-bit I/O fifo port specified by Port. > + The port is written Count times, and the write data is > + retrieved from the provided Buffer. > + > + This function must guarantee that all I/O write and write operations are > + serialized. > + > + If 16-bit I/O port operations are not supported, then ASSERT(). > + > + @param Port The I/O port to write. > + @param Count The number of times to write I/O port. > + @param Buffer The buffer to retrieve the write data from. > + > +**/ > +VOID > +EFIAPI > +IoWriteFifo16 ( > + IN UINTN Port, > + IN UINTN Count, > + IN VOID *Buffer > + ) > +{ > + ASSERT (FALSE); > +} > + > +/** > + Reads a 32-bit I/O port fifo into a block of memory. > + > + Reads the 32-bit I/O fifo port specified by Port. > + The port is read Count times, and the read data is > + stored in the provided Buffer. > + > + This function must guarantee that all I/O read and write operations are > + serialized. > + > + If 32-bit I/O port operations are not supported, then ASSERT(). > + > + @param Port The I/O port to read. > + @param Count The number of times to read I/O port. > + @param Buffer The buffer to store the read data into. > + > +**/ > +VOID > +EFIAPI > +IoReadFifo32 ( > + IN UINTN Port, > + IN UINTN Count, > + OUT VOID *Buffer > + ) > +{ > + ASSERT (FALSE); > +} > + > +/** > + Writes a block of memory into a 32-bit I/O port fifo. > + > + Writes the 32-bit I/O fifo port specified by Port. > + The port is written Count times, and the write data is > + retrieved from the provided Buffer. > + > + This function must guarantee that all I/O write and write operations are > + serialized. > + > + If 32-bit I/O port operations are not supported, then ASSERT(). > + > + @param Port The I/O port to write. > + @param Count The number of times to write I/O port. > + @param Buffer The buffer to retrieve the write data from. > + > +**/ > +VOID > +EFIAPI > +IoWriteFifo32 ( > + IN UINTN Port, > + IN UINTN Count, > + IN VOID *Buffer > + ) > +{ > + ASSERT (FALSE); > +} > + > +/** > + Reads an 8-bit MMIO register. > + > + Reads the 8-bit MMIO register specified by Address. The 8-bit read value is > + returned. This function must guarantee that all MMIO read and write > + operations are serialized. > + > + If 8-bit MMIO register operations are not supported, then ASSERT(). > + > + @param Address The MMIO register to read. > + > + @return The value read. > + > +**/ > +UINT8 > +EFIAPI > +MmioRead8 ( > + IN UINTN Address > + ) > +{ > + return MmioRead8Internal (Address); > +} > + > +/** > + Writes an 8-bit MMIO register. > + > + Writes the 8-bit MMIO register specified by Address with the value specified > + by Value and returns Value. This function must guarantee that all MMIO read > + and write operations are serialized. > + > + If 8-bit MMIO register operations are not supported, then ASSERT(). > + > + @param Address The MMIO register to write. > + @param Value The value to write to the MMIO register. > + > +**/ > +UINT8 > +EFIAPI > +MmioWrite8 ( > + IN UINTN Address, > + IN UINT8 Value > + ) > +{ > + MmioWrite8Internal (Address, Value); > + return Value; > +} > + > +/** > + Reads a 16-bit MMIO register. > + > + Reads the 16-bit MMIO register specified by Address. The 16-bit read value is > + returned. This function must guarantee that all MMIO read and write > + operations are serialized. > + > + If 16-bit MMIO register operations are not supported, then ASSERT(). > + > + @param Address The MMIO register to read. > + > + @return The value read. > + > +**/ > +UINT16 > +EFIAPI > +MmioRead16 ( > + IN UINTN Address > + ) > +{ > + ASSERT ((Address & 1) == 0); > + > + return MmioRead16Internal (Address); > +} > + > +/** > + Writes a 16-bit MMIO register. > + > + Writes the 16-bit MMIO register specified by Address with the value specified > + by Value and returns Value. This function must guarantee that all MMIO read > + and write operations are serialized. > + > + If 16-bit MMIO register operations are not supported, then ASSERT(). > + > + @param Address The MMIO register to write. > + @param Value The value to write to the MMIO register. > + > +**/ > +UINT16 > +EFIAPI > +MmioWrite16 ( > + IN UINTN Address, > + IN UINT16 Value > + ) > +{ > + ASSERT ((Address & 1) == 0); > + > + MmioWrite16Internal (Address, Value); > + return Value; > +} > + > +/** > + Reads a 32-bit MMIO register. > + > + Reads the 32-bit MMIO register specified by Address. The 32-bit read value is > + returned. This function must guarantee that all MMIO read and write > + operations are serialized. > + > + If 32-bit MMIO register operations are not supported, then ASSERT(). > + > + @param Address The MMIO register to read. > + > + @return The value read. > + > +**/ > +UINT32 > +EFIAPI > +MmioRead32 ( > + IN UINTN Address > + ) > +{ > + ASSERT ((Address & 3) == 0); > + > + return MmioRead32Internal (Address); > +} > + > +/** > + Writes a 32-bit MMIO register. > + > + Writes the 32-bit MMIO register specified by Address with the value specified > + by Value and returns Value. This function must guarantee that all MMIO read > + and write operations are serialized. > + > + If 32-bit MMIO register operations are not supported, then ASSERT(). > + > + @param Address The MMIO register to write. > + @param Value The value to write to the MMIO register. > + > +**/ > +UINT32 > +EFIAPI > +MmioWrite32 ( > + IN UINTN Address, > + IN UINT32 Value > + ) > +{ > + ASSERT ((Address & 3) == 0); > + > + MmioWrite32Internal (Address, Value); > + return Value; > +} > + > +/** > + Reads a 64-bit MMIO register. > + > + Reads the 64-bit MMIO register specified by Address. The 64-bit read value is > + returned. This function must guarantee that all MMIO read and write > + operations are serialized. > + > + If 64-bit MMIO register operations are not supported, then ASSERT(). > + > + @param Address The MMIO register to read. > + > + @return The value read. > + > +**/ > +UINT64 > +EFIAPI > +MmioRead64 ( > + IN UINTN Address > + ) > +{ > + ASSERT ((Address & 7) == 0); > + > + return MmioRead64Internal (Address); > +} > + > +/** > + Writes a 64-bit MMIO register. > + > + Writes the 64-bit MMIO register specified by Address with the value specified > + by Value and returns Value. This function must guarantee that all MMIO read > + and write operations are serialized. > + > + If 64-bit MMIO register operations are not supported, then ASSERT(). > + > + @param Address The MMIO register to write. > + @param Value The value to write to the MMIO register. > + > +**/ > +UINT64 > +EFIAPI > +MmioWrite64 ( > + IN UINTN Address, > + IN UINT64 Value > + ) > +{ > + ASSERT ((Address & 7) == 0); > + > + MmioWrite64Internal (Address, Value); > + return Value; > +} > diff --git a/MdePkg/MdePkg.dsc b/MdePkg/MdePkg.dsc > index 60efd722e9d7..cf20bc3a1fcf 100644 > --- a/MdePkg/MdePkg.dsc > +++ b/MdePkg/MdePkg.dsc > @@ -186,6 +186,7 @@ [Components.EBC] > MdePkg/Library/UefiRuntimeLib/UefiRuntimeLib.inf > > [Components.ARM, Components.AARCH64] > + MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.inf > MdePkg/Library/BaseStackCheckLib/BaseStackCheckLib.inf > > [BuildOptions] > -- > 2.17.1 > > _______________________________________________ > edk2-devel mailing list > edk2-devel@lists.01.org > https://lists.01.org/mailman/listinfo/edk2-devel _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
On 11 June 2018 at 17:51, Gao, Liming <liming.gao@intel.com> wrote: > Reviewed-by: Liming Gao <liming.gao@intel.com> > Pushed as 4134f2bddcb68d2e20ed000cdf54abf3f1140904 Thanks all >> -----Original Message----- >> From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf Of Ard Biesheuvel >> Sent: Monday, June 11, 2018 3:26 PM >> To: edk2-devel@lists.01.org >> Cc: Kinney, Michael D <michael.d.kinney@intel.com>; lersek@redhat.com; Gao, Liming <liming.gao@intel.com>; >> leif.lindholm@linaro.org; Ard Biesheuvel <ard.biesheuvel@linaro.org> >> Subject: [edk2] [PATCH v3 1/2] MdePkg/BaseIoLibIntrinsic: make BaseIoLibIntrinsic safe for ArmVirt/KVM >> >> KVM on ARM refuses to decode load/store instructions used to perform >> I/O to emulated devices, and instead relies on the exception syndrome >> information to describe the operand register, access size, etc. >> This is only possible for instructions that have a single input/output >> register (as opposed to ones that increment the offset register, or >> load/store pair instructions, etc). Otherwise, QEMU crashes with the >> following error >> >> error: kvm run failed Function not implemented >> R00=01010101 R01=00000008 R02=00000048 R03=08000820 >> R04=00000120 R05=7faaa0e0 R06=7faaa0dc R07=7faaa0e8 >> R08=7faaa0ec R09=7faaa088 R10=000000ff R11=00000080 >> R12=ff000000 R13=7fccfe08 R14=7faa835f R15=7faa887c >> PSR=800001f3 N--- T svc32 >> QEMU: Terminated >> >> and KVM produces a warning such as the following in the kernel log >> >> kvm [17646]: load/store instruction decoding not implemented >> >> The IoLib implementation provided by MdePkg/Library/BaseIoLibIntrinsic >> is based on C code, and when LTO is in effect, the MMIO accesses could >> be merged with, e.g., manipulations of the loop counter, producing >> opcodes that KVM does not support for emulated MMIO. >> >> So let's add a special ArmVirt flavor of this library that implements >> that actual load/store operations in assembler, ensuring that the >> instructions involved can be emulated by KVM. >> >> Contributed-under: TianoCore Contribution Agreement 1.1 >> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> >> --- >> v3: add missing prototype comments in IoLibArmVirt.c >> remove mention of ASSERT () from description of internal asm routines >> v2: add missing .uni file >> split off ArmVirtPkg change >> add VS2017 version of AArch64 asm file >> add reference to MdePkg.dsc >> >> MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.S | 148 ++++ >> MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.asm | 149 ++++ >> MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.S | 145 ++++ >> MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.asm | 149 ++++ >> MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.inf | 52 ++ >> MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.uni | 23 + >> MdePkg/Library/BaseIoLibIntrinsic/IoLibArmVirt.c | 733 ++++++++++++++++++++ >> MdePkg/MdePkg.dsc | 1 + >> 8 files changed, 1400 insertions(+) >> >> diff --git a/MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.S b/MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.S >> new file mode 100644 >> index 000000000000..85f59324270c >> --- /dev/null >> +++ b/MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.S >> @@ -0,0 +1,148 @@ >> +# >> +# Copyright (c) 2014-2018, Linaro Limited. All rights reserved. >> +# >> +# This program and the accompanying materials are licensed and made available >> +# under the terms and conditions of the BSD License which accompanies this >> +# distribution. The full text of the license may be found at >> +# http://opensource.org/licenses/bsd-license.php >> +# >> +# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, >> +# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. >> +# >> +# >> + >> +.text >> +.align 3 >> + >> +GCC_ASM_EXPORT(MmioRead8Internal) >> +GCC_ASM_EXPORT(MmioWrite8Internal) >> +GCC_ASM_EXPORT(MmioRead16Internal) >> +GCC_ASM_EXPORT(MmioWrite16Internal) >> +GCC_ASM_EXPORT(MmioRead32Internal) >> +GCC_ASM_EXPORT(MmioWrite32Internal) >> +GCC_ASM_EXPORT(MmioRead64Internal) >> +GCC_ASM_EXPORT(MmioWrite64Internal) >> + >> +// >> +// Reads an 8-bit MMIO register. >> +// >> +// Reads the 8-bit MMIO register specified by Address. The 8-bit read value is >> +// returned. This function must guarantee that all MMIO read and write >> +// operations are serialized. >> +// >> +// @param Address The MMIO register to read. >> +// >> +// @return The value read. >> +// >> +ASM_PFX(MmioRead8Internal): >> + ldrb w0, [x0] >> + dmb ld >> + ret >> + >> +// >> +// Writes an 8-bit MMIO register. >> +// >> +// Writes the 8-bit MMIO register specified by Address with the value specified >> +// by Value and returns Value. This function must guarantee that all MMIO read >> +// and write operations are serialized. >> +// >> +// @param Address The MMIO register to write. >> +// @param Value The value to write to the MMIO register. >> +// >> +ASM_PFX(MmioWrite8Internal): >> + dmb st >> + strb w1, [x0] >> + ret >> + >> +// >> +// Reads a 16-bit MMIO register. >> +// >> +// Reads the 16-bit MMIO register specified by Address. The 16-bit read value is >> +// returned. This function must guarantee that all MMIO read and write >> +// operations are serialized. >> +// >> +// @param Address The MMIO register to read. >> +// >> +// @return The value read. >> +// >> +ASM_PFX(MmioRead16Internal): >> + ldrh w0, [x0] >> + dmb ld >> + ret >> + >> +// >> +// Writes a 16-bit MMIO register. >> +// >> +// Writes the 16-bit MMIO register specified by Address with the value specified >> +// by Value and returns Value. This function must guarantee that all MMIO read >> +// and write operations are serialized. >> +// >> +// @param Address The MMIO register to write. >> +// @param Value The value to write to the MMIO register. >> +// >> +ASM_PFX(MmioWrite16Internal): >> + dmb st >> + strh w1, [x0] >> + ret >> + >> +// >> +// Reads a 32-bit MMIO register. >> +// >> +// Reads the 32-bit MMIO register specified by Address. The 32-bit read value is >> +// returned. This function must guarantee that all MMIO read and write >> +// operations are serialized. >> +// >> +// @param Address The MMIO register to read. >> +// >> +// @return The value read. >> +// >> +ASM_PFX(MmioRead32Internal): >> + ldr w0, [x0] >> + dmb ld >> + ret >> + >> +// >> +// Writes a 32-bit MMIO register. >> +// >> +// Writes the 32-bit MMIO register specified by Address with the value specified >> +// by Value and returns Value. This function must guarantee that all MMIO read >> +// and write operations are serialized. >> +// >> +// @param Address The MMIO register to write. >> +// @param Value The value to write to the MMIO register. >> +// >> +ASM_PFX(MmioWrite32Internal): >> + dmb st >> + str w1, [x0] >> + ret >> + >> +// >> +// Reads a 64-bit MMIO register. >> +// >> +// Reads the 64-bit MMIO register specified by Address. The 64-bit read value is >> +// returned. This function must guarantee that all MMIO read and write >> +// operations are serialized. >> +// >> +// @param Address The MMIO register to read. >> +// >> +// @return The value read. >> +// >> +ASM_PFX(MmioRead64Internal): >> + ldr x0, [x0] >> + dmb ld >> + ret >> + >> +// >> +// Writes a 64-bit MMIO register. >> +// >> +// Writes the 64-bit MMIO register specified by Address with the value specified >> +// by Value and returns Value. This function must guarantee that all MMIO read >> +// and write operations are serialized. >> +// >> +// @param Address The MMIO register to write. >> +// @param Value The value to write to the MMIO register. >> +// >> +ASM_PFX(MmioWrite64Internal): >> + dmb st >> + str x1, [x0] >> + ret >> diff --git a/MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.asm >> b/MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.asm >> new file mode 100644 >> index 000000000000..bd235a5dd441 >> --- /dev/null >> +++ b/MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.asm >> @@ -0,0 +1,149 @@ >> +; >> +; Copyright (c) 2014-2018, Linaro Limited. All rights reserved. >> +; >> +; This program and the accompanying materials are licensed and made available >> +; under the terms and conditions of the BSD License which accompanies this >> +; distribution. The full text of the license may be found at >> +; http:;opensource.org/licenses/bsd-license.php >> +; >> +; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, >> +; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. >> +; >> + >> + >> +AREA IoLibMmio, CODE, READONLY >> + >> +EXPORT MmioRead8Internal >> +EXPORT MmioWrite8Internal >> +EXPORT MmioRead16Internal >> +EXPORT MmioWrite16Internal >> +EXPORT MmioRead32Internal >> +EXPORT MmioWrite32Internal >> +EXPORT MmioRead64Internal >> +EXPORT MmioWrite64Internal >> + >> +; >> +; Reads an 8-bit MMIO register. >> +; >> +; Reads the 8-bit MMIO register specified by Address. The 8-bit read value is >> +; returned. This function must guarantee that all MMIO read and write >> +; operations are serialized. >> +; >> +; @param Address The MMIO register to read. >> +; >> +; @return The value read. >> +; >> +MmioRead8Internal >> + ldrb w0, [x0] >> + dmb ld >> + ret >> + >> +; >> +; Writes an 8-bit MMIO register. >> +; >> +; Writes the 8-bit MMIO register specified by Address with the value specified >> +; by Value and returns Value. This function must guarantee that all MMIO read >> +; and write operations are serialized. >> +; >> +; @param Address The MMIO register to write. >> +; @param Value The value to write to the MMIO register. >> +; >> +MmioWrite8Internal >> + dmb st >> + strb w1, [x0] >> + ret >> + >> +; >> +; Reads a 16-bit MMIO register. >> +; >> +; Reads the 16-bit MMIO register specified by Address. The 16-bit read value is >> +; returned. This function must guarantee that all MMIO read and write >> +; operations are serialized. >> +; >> +; @param Address The MMIO register to read. >> +; >> +; @return The value read. >> +; >> +MmioRead16Internal >> + ldrh w0, [x0] >> + dmb ld >> + ret >> + >> +; >> +; Writes a 16-bit MMIO register. >> +; >> +; Writes the 16-bit MMIO register specified by Address with the value specified >> +; by Value and returns Value. This function must guarantee that all MMIO read >> +; and write operations are serialized. >> +; >> +; @param Address The MMIO register to write. >> +; @param Value The value to write to the MMIO register. >> +; >> +MmioWrite16Internal >> + dmb st >> + strh w1, [x0] >> + ret >> + >> +; >> +; Reads a 32-bit MMIO register. >> +; >> +; Reads the 32-bit MMIO register specified by Address. The 32-bit read value is >> +; returned. This function must guarantee that all MMIO read and write >> +; operations are serialized. >> +; >> +; @param Address The MMIO register to read. >> +; >> +; @return The value read. >> +; >> +MmioRead32Internal >> + ldr w0, [x0] >> + dmb ld >> + ret >> + >> +; >> +; Writes a 32-bit MMIO register. >> +; >> +; Writes the 32-bit MMIO register specified by Address with the value specified >> +; by Value and returns Value. This function must guarantee that all MMIO read >> +; and write operations are serialized. >> +; >> +; @param Address The MMIO register to write. >> +; @param Value The value to write to the MMIO register. >> +; >> +MmioWrite32Internal >> + dmb st >> + str w1, [x0] >> + ret >> + >> +; >> +; Reads a 64-bit MMIO register. >> +; >> +; Reads the 64-bit MMIO register specified by Address. The 64-bit read value is >> +; returned. This function must guarantee that all MMIO read and write >> +; operations are serialized. >> +; >> +; @param Address The MMIO register to read. >> +; >> +; @return The value read. >> +; >> +MmioRead64Internal >> + ldr x0, [x0] >> + dmb ld >> + ret >> + >> +; >> +; Writes a 64-bit MMIO register. >> +; >> +; Writes the 64-bit MMIO register specified by Address with the value specified >> +; by Value and returns Value. This function must guarantee that all MMIO read >> +; and write operations are serialized. >> +; >> +; @param Address The MMIO register to write. >> +; @param Value The value to write to the MMIO register. >> +; >> +MmioWrite64Internal >> + dmb st >> + str x1, [x0] >> + ret >> + >> + END >> diff --git a/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.S b/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.S >> new file mode 100644 >> index 000000000000..1e91e87fb887 >> --- /dev/null >> +++ b/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.S >> @@ -0,0 +1,145 @@ >> +# >> +# Copyright (c) 2014-2018, Linaro Limited. All rights reserved. >> +# >> +# This program and the accompanying materials are licensed and made available >> +# under the terms and conditions of the BSD License which accompanies this >> +# distribution. The full text of the license may be found at >> +# http://opensource.org/licenses/bsd-license.php >> +# >> +# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, >> +# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. >> +# >> +# >> + >> +GCC_ASM_EXPORT(MmioRead8Internal) >> +GCC_ASM_EXPORT(MmioWrite8Internal) >> +GCC_ASM_EXPORT(MmioRead16Internal) >> +GCC_ASM_EXPORT(MmioWrite16Internal) >> +GCC_ASM_EXPORT(MmioRead32Internal) >> +GCC_ASM_EXPORT(MmioWrite32Internal) >> +GCC_ASM_EXPORT(MmioRead64Internal) >> +GCC_ASM_EXPORT(MmioWrite64Internal) >> + >> +// >> +// Reads an 8-bit MMIO register. >> +// >> +// Reads the 8-bit MMIO register specified by Address. The 8-bit read value is >> +// returned. This function must guarantee that all MMIO read and write >> +// operations are serialized. >> +// >> +// @param Address The MMIO register to read. >> +// >> +// @return The value read. >> +// >> +ASM_PFX(MmioRead8Internal): >> + ldrb r0, [r0] >> + dmb >> + bx lr >> + >> +// >> +// Writes an 8-bit MMIO register. >> +// >> +// Writes the 8-bit MMIO register specified by Address with the value specified >> +// by Value and returns Value. This function must guarantee that all MMIO read >> +// and write operations are serialized. >> +// >> +// @param Address The MMIO register to write. >> +// @param Value The value to write to the MMIO register. >> +// >> +ASM_PFX(MmioWrite8Internal): >> + dmb st >> + strb r1, [r0] >> + bx lr >> + >> +// >> +// Reads a 16-bit MMIO register. >> +// >> +// Reads the 16-bit MMIO register specified by Address. The 16-bit read value is >> +// returned. This function must guarantee that all MMIO read and write >> +// operations are serialized. >> +// >> +// @param Address The MMIO register to read. >> +// >> +// @return The value read. >> +// >> +ASM_PFX(MmioRead16Internal): >> + ldrh r0, [r0] >> + dmb >> + bx lr >> + >> +// >> +// Writes a 16-bit MMIO register. >> +// >> +// Writes the 16-bit MMIO register specified by Address with the value specified >> +// by Value and returns Value. This function must guarantee that all MMIO read >> +// and write operations are serialized. >> +// >> +// @param Address The MMIO register to write. >> +// @param Value The value to write to the MMIO register. >> +// >> +ASM_PFX(MmioWrite16Internal): >> + dmb st >> + strh r1, [r0] >> + bx lr >> + >> +// >> +// Reads a 32-bit MMIO register. >> +// >> +// Reads the 32-bit MMIO register specified by Address. The 32-bit read value is >> +// returned. This function must guarantee that all MMIO read and write >> +// operations are serialized. >> +// >> +// @param Address The MMIO register to read. >> +// >> +// @return The value read. >> +// >> +ASM_PFX(MmioRead32Internal): >> + ldr r0, [r0] >> + dmb >> + bx lr >> + >> +// >> +// Writes a 32-bit MMIO register. >> +// >> +// Writes the 32-bit MMIO register specified by Address with the value specified >> +// by Value and returns Value. This function must guarantee that all MMIO read >> +// and write operations are serialized. >> +// >> +// @param Address The MMIO register to write. >> +// @param Value The value to write to the MMIO register. >> +// >> +ASM_PFX(MmioWrite32Internal): >> + dmb st >> + str r1, [r0] >> + bx lr >> + >> +// >> +// Reads a 64-bit MMIO register. >> +// >> +// Reads the 64-bit MMIO register specified by Address. The 64-bit read value is >> +// returned. This function must guarantee that all MMIO read and write >> +// operations are serialized. >> +// >> +// @param Address The MMIO register to read. >> +// >> +// @return The value read. >> +// >> +ASM_PFX(MmioRead64Internal): >> + ldrd r0, r1, [r0] >> + dmb >> + bx lr >> + >> +// >> +// Writes a 64-bit MMIO register. >> +// >> +// Writes the 64-bit MMIO register specified by Address with the value specified >> +// by Value and returns Value. This function must guarantee that all MMIO read >> +// and write operations are serialized. >> +// >> +// @param Address The MMIO register to write. >> +// @param Value The value to write to the MMIO register. >> +// >> +ASM_PFX(MmioWrite64Internal): >> + dmb st >> + strd r2, r3, [r0] >> + bx lr >> diff --git a/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.asm b/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.asm >> new file mode 100644 >> index 000000000000..cff99b86a99c >> --- /dev/null >> +++ b/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.asm >> @@ -0,0 +1,149 @@ >> +; >> +; Copyright (c) 2014-2018, Linaro Limited. All rights reserved. >> +; >> +; This program and the accompanying materials are licensed and made available >> +; under the terms and conditions of the BSD License which accompanies this >> +; distribution. The full text of the license may be found at >> +; http:;opensource.org/licenses/bsd-license.php >> +; >> +; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, >> +; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. >> +; >> + >> + >> +AREA IoLibMmio, CODE, READONLY >> + >> +EXPORT MmioRead8Internal >> +EXPORT MmioWrite8Internal >> +EXPORT MmioRead16Internal >> +EXPORT MmioWrite16Internal >> +EXPORT MmioRead32Internal >> +EXPORT MmioWrite32Internal >> +EXPORT MmioRead64Internal >> +EXPORT MmioWrite64Internal >> + >> +; >> +; Reads an 8-bit MMIO register. >> +; >> +; Reads the 8-bit MMIO register specified by Address. The 8-bit read value is >> +; returned. This function must guarantee that all MMIO read and write >> +; operations are serialized. >> +; >> +; @param Address The MMIO register to read. >> +; >> +; @return The value read. >> +; >> +MmioRead8Internal >> + ldrb r0, [r0] >> + dmb >> + bx lr >> + >> +; >> +; Writes an 8-bit MMIO register. >> +; >> +; Writes the 8-bit MMIO register specified by Address with the value specified >> +; by Value and returns Value. This function must guarantee that all MMIO read >> +; and write operations are serialized. >> +; >> +; @param Address The MMIO register to write. >> +; @param Value The value to write to the MMIO register. >> +; >> +MmioWrite8Internal >> + dmb st >> + strb r1, [r0] >> + bx lr >> + >> +; >> +; Reads a 16-bit MMIO register. >> +; >> +; Reads the 16-bit MMIO register specified by Address. The 16-bit read value is >> +; returned. This function must guarantee that all MMIO read and write >> +; operations are serialized. >> +; >> +; @param Address The MMIO register to read. >> +; >> +; @return The value read. >> +; >> +MmioRead16Internal >> + ldrh r0, [r0] >> + dmb >> + bx lr >> + >> +; >> +; Writes a 16-bit MMIO register. >> +; >> +; Writes the 16-bit MMIO register specified by Address with the value specified >> +; by Value and returns Value. This function must guarantee that all MMIO read >> +; and write operations are serialized. >> +; >> +; @param Address The MMIO register to write. >> +; @param Value The value to write to the MMIO register. >> +; >> +MmioWrite16Internal >> + dmb st >> + strh r1, [r0] >> + bx lr >> + >> +; >> +; Reads a 32-bit MMIO register. >> +; >> +; Reads the 32-bit MMIO register specified by Address. The 32-bit read value is >> +; returned. This function must guarantee that all MMIO read and write >> +; operations are serialized. >> +; >> +; @param Address The MMIO register to read. >> +; >> +; @return The value read. >> +; >> +MmioRead32Internal >> + ldr r0, [r0] >> + dmb >> + bx lr >> + >> +; >> +; Writes a 32-bit MMIO register. >> +; >> +; Writes the 32-bit MMIO register specified by Address with the value specified >> +; by Value and returns Value. This function must guarantee that all MMIO read >> +; and write operations are serialized. >> +; >> +; @param Address The MMIO register to write. >> +; @param Value The value to write to the MMIO register. >> +; >> +MmioWrite32Internal >> + dmb st >> + str r1, [r0] >> + bx lr >> + >> +; >> +; Reads a 64-bit MMIO register. >> +; >> +; Reads the 64-bit MMIO register specified by Address. The 64-bit read value is >> +; returned. This function must guarantee that all MMIO read and write >> +; operations are serialized. >> +; >> +; @param Address The MMIO register to read. >> +; >> +; @return The value read. >> +; >> +MmioRead64Internal >> + ldrd r0, r1, [r0] >> + dmb >> + bx lr >> + >> +; >> +; Writes a 64-bit MMIO register. >> +; >> +; Writes the 64-bit MMIO register specified by Address with the value specified >> +; by Value and returns Value. This function must guarantee that all MMIO read >> +; and write operations are serialized. >> +; >> +; @param Address The MMIO register to write. >> +; @param Value The value to write to the MMIO register. >> +; >> +MmioWrite64Internal >> + dmb st >> + strd r2, r3, [r0] >> + bx lr >> + >> + END >> diff --git a/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.inf >> b/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.inf >> new file mode 100644 >> index 000000000000..1e39ad533fac >> --- /dev/null >> +++ b/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.inf >> @@ -0,0 +1,52 @@ >> +## @file >> +# Instance of I/O Library using KVM/ARM safe assembler routines >> +# >> +# Copyright (c) 2007 - 2015, Intel Corporation. All rights reserved.<BR> >> +# Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> >> +# Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR> >> +# Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR> >> +# >> +# This program and the accompanying materials are licensed and made available >> +# under the terms and conditions of the BSD License which accompanies this >> +# distribution. The full text of the license may be found at >> +# http://opensource.org/licenses/bsd-license.php. >> +# >> +# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, >> +# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. >> +# >> +## >> + >> +[Defines] >> + INF_VERSION = 0x0001001A >> + BASE_NAME = BaseIoLibIntrinsicArmVirt >> + MODULE_UNI_FILE = BaseIoLibIntrinsicArmVirt.uni >> + FILE_GUID = 217102b4-b465-4a1d-a2de-93dd385ec480 >> + MODULE_TYPE = BASE >> + VERSION_STRING = 1.0 >> + LIBRARY_CLASS = IoLib >> + >> +# >> +# VALID_ARCHITECTURES = ARM AARCH64 >> +# >> + >> +[Sources] >> + IoLibMmioBuffer.c >> + BaseIoLibIntrinsicInternal.h >> + IoHighLevel.c >> + >> +[Sources.ARM] >> + IoLibArmVirt.c >> + Arm/ArmVirtMmio.S | GCC >> + Arm/ArmVirtMmio.asm | RVCT >> + >> +[Sources.AARCH64] >> + IoLibArmVirt.c >> + AArch64/ArmVirtMmio.S | GCC >> + AArch64/ArmVirtMmio.asm | MSFT >> + >> +[Packages] >> + MdePkg/MdePkg.dec >> + >> +[LibraryClasses] >> + DebugLib >> + BaseLib >> diff --git a/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.uni >> b/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.uni >> new file mode 100644 >> index 000000000000..a1109c520453 >> --- /dev/null >> +++ b/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.uni >> @@ -0,0 +1,23 @@ >> +// /** @file >> +// Instance of I/O Library using KVM/ARM safe assembler routines >> +// >> +// Copyright (c) 2007 - 2015, Intel Corporation. All rights reserved.<BR> >> +// Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> >> +// Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR> >> +// Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR> >> +// >> +// This program and the accompanying materials are licensed and made available >> +// under the terms and conditions of the BSD License which accompanies this >> +// distribution. The full text of the license may be found at >> +// http://opensource.org/licenses/bsd-license.php. >> +// >> +// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, >> +// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. >> +// >> +// **/ >> + >> + >> +#string STR_MODULE_ABSTRACT #language en-US "Instance of I/O Library using KVM/ARM safe assembler routines" >> + >> +#string STR_MODULE_DESCRIPTION #language en-US "I/O Library that uses assembler routines to perform MMIO >> accesses, to prevent link time code generation under LTO from emitting instructions that KVM on ARM cannot deal with." >> + >> diff --git a/MdePkg/Library/BaseIoLibIntrinsic/IoLibArmVirt.c b/MdePkg/Library/BaseIoLibIntrinsic/IoLibArmVirt.c >> new file mode 100644 >> index 000000000000..1a1b77967d55 >> --- /dev/null >> +++ b/MdePkg/Library/BaseIoLibIntrinsic/IoLibArmVirt.c >> @@ -0,0 +1,733 @@ >> +/** @file >> + I/O Library for ARM. >> + >> + Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR> >> + Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> >> + Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR> >> + Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR> >> + >> + This program and the accompanying materials are licensed and made available >> + under the terms and conditions of the BSD License which accompanies this >> + distribution. The full text of the license may be found at >> + http://opensource.org/licenses/bsd-license.php. >> + >> + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, >> + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. >> + >> +**/ >> + >> +#include "BaseIoLibIntrinsicInternal.h" >> + >> +/** >> + Reads an 8-bit MMIO register. >> + >> + Reads the 8-bit MMIO register specified by Address. The 8-bit read value is >> + returned. This function must guarantee that all MMIO read and write >> + operations are serialized. >> + >> + @param Address The MMIO register to read. >> + >> + @return The value read. >> + >> +**/ >> +UINT8 >> +EFIAPI >> +MmioRead8Internal ( >> + IN UINTN Address >> + ); >> + >> +/** >> + Writes an 8-bit MMIO register. >> + >> + Writes the 8-bit MMIO register specified by Address with the value specified >> + by Value and returns Value. This function must guarantee that all MMIO read >> + and write operations are serialized. >> + >> + @param Address The MMIO register to write. >> + @param Value The value to write to the MMIO register. >> + >> +**/ >> +VOID >> +EFIAPI >> +MmioWrite8Internal ( >> + IN UINTN Address, >> + IN UINT8 Value >> + ); >> + >> +/** >> + Reads a 16-bit MMIO register. >> + >> + Reads the 16-bit MMIO register specified by Address. The 16-bit read value is >> + returned. This function must guarantee that all MMIO read and write >> + operations are serialized. >> + >> + @param Address The MMIO register to read. >> + >> + @return The value read. >> + >> +**/ >> +UINT16 >> +EFIAPI >> +MmioRead16Internal ( >> + IN UINTN Address >> + ); >> + >> +/** >> + Writes a 16-bit MMIO register. >> + >> + Writes the 16-bit MMIO register specified by Address with the value specified >> + by Value and returns Value. This function must guarantee that all MMIO read >> + and write operations are serialized. >> + >> + @param Address The MMIO register to write. >> + @param Value The value to write to the MMIO register. >> + >> +**/ >> +VOID >> +EFIAPI >> +MmioWrite16Internal ( >> + IN UINTN Address, >> + IN UINT16 Value >> + ); >> + >> +/** >> + Reads a 32-bit MMIO register. >> + >> + Reads the 32-bit MMIO register specified by Address. The 32-bit read value is >> + returned. This function must guarantee that all MMIO read and write >> + operations are serialized. >> + >> + @param Address The MMIO register to read. >> + >> + @return The value read. >> + >> +**/ >> +UINT32 >> +EFIAPI >> +MmioRead32Internal ( >> + IN UINTN Address >> + ); >> + >> +/** >> + Writes a 32-bit MMIO register. >> + >> + Writes the 32-bit MMIO register specified by Address with the value specified >> + by Value and returns Value. This function must guarantee that all MMIO read >> + and write operations are serialized. >> + >> + @param Address The MMIO register to write. >> + @param Value The value to write to the MMIO register. >> + >> +**/ >> +VOID >> +EFIAPI >> +MmioWrite32Internal ( >> + IN UINTN Address, >> + IN UINT32 Value >> + ); >> + >> +/** >> + Reads a 64-bit MMIO register. >> + >> + Reads the 64-bit MMIO register specified by Address. The 64-bit read value is >> + returned. This function must guarantee that all MMIO read and write >> + operations are serialized. >> + >> + @param Address The MMIO register to read. >> + >> + @return The value read. >> + >> +**/ >> +UINT64 >> +EFIAPI >> +MmioRead64Internal ( >> + IN UINTN Address >> + ); >> + >> +/** >> + Writes a 64-bit MMIO register. >> + >> + Writes the 64-bit MMIO register specified by Address with the value specified >> + by Value and returns Value. This function must guarantee that all MMIO read >> + and write operations are serialized. >> + >> + @param Address The MMIO register to write. >> + @param Value The value to write to the MMIO register. >> + >> +**/ >> +VOID >> +EFIAPI >> +MmioWrite64Internal ( >> + IN UINTN Address, >> + IN UINT64 Value >> + ); >> + >> +/** >> + Reads an 8-bit I/O port. >> + >> + Reads the 8-bit I/O port specified by Port. The 8-bit read value is returned. >> + This function must guarantee that all I/O read and write operations are >> + serialized. >> + >> + If 8-bit I/O port operations are not supported, then ASSERT(). >> + >> + @param Port The I/O port to read. >> + >> + @return The value read. >> + >> +**/ >> +UINT8 >> +EFIAPI >> +IoRead8 ( >> + IN UINTN Port >> + ) >> +{ >> + ASSERT (FALSE); >> + return 0; >> +} >> + >> +/** >> + Writes an 8-bit I/O port. >> + >> + Writes the 8-bit I/O port specified by Port with the value specified by Value >> + and returns Value. This function must guarantee that all I/O read and write >> + operations are serialized. >> + >> + If 8-bit I/O port operations are not supported, then ASSERT(). >> + >> + @param Port The I/O port to write. >> + @param Value The value to write to the I/O port. >> + >> + @return The value written the I/O port. >> + >> +**/ >> +UINT8 >> +EFIAPI >> +IoWrite8 ( >> + IN UINTN Port, >> + IN UINT8 Value >> + ) >> +{ >> + ASSERT (FALSE); >> + return Value; >> +} >> + >> +/** >> + Reads a 16-bit I/O port. >> + >> + Reads the 16-bit I/O port specified by Port. The 16-bit read value is returned. >> + This function must guarantee that all I/O read and write operations are >> + serialized. >> + >> + If 16-bit I/O port operations are not supported, then ASSERT(). >> + >> + @param Port The I/O port to read. >> + >> + @return The value read. >> + >> +**/ >> +UINT16 >> +EFIAPI >> +IoRead16 ( >> + IN UINTN Port >> + ) >> +{ >> + ASSERT (FALSE); >> + return 0; >> +} >> + >> +/** >> + Writes a 16-bit I/O port. >> + >> + Writes the 16-bit I/O port specified by Port with the value specified by Value >> + and returns Value. This function must guarantee that all I/O read and write >> + operations are serialized. >> + >> + If 16-bit I/O port operations are not supported, then ASSERT(). >> + >> + @param Port The I/O port to write. >> + @param Value The value to write to the I/O port. >> + >> + @return The value written the I/O port. >> + >> +**/ >> +UINT16 >> +EFIAPI >> +IoWrite16 ( >> + IN UINTN Port, >> + IN UINT16 Value >> + ) >> +{ >> + ASSERT (FALSE); >> + return Value; >> +} >> + >> +/** >> + Reads a 32-bit I/O port. >> + >> + Reads the 32-bit I/O port specified by Port. The 32-bit read value is returned. >> + This function must guarantee that all I/O read and write operations are >> + serialized. >> + >> + If 32-bit I/O port operations are not supported, then ASSERT(). >> + >> + @param Port The I/O port to read. >> + >> + @return The value read. >> + >> +**/ >> +UINT32 >> +EFIAPI >> +IoRead32 ( >> + IN UINTN Port >> + ) >> +{ >> + ASSERT (FALSE); >> + return 0; >> +} >> + >> +/** >> + Writes a 32-bit I/O port. >> + >> + Writes the 32-bit I/O port specified by Port with the value specified by Value >> + and returns Value. This function must guarantee that all I/O read and write >> + operations are serialized. >> + >> + If 32-bit I/O port operations are not supported, then ASSERT(). >> + >> + @param Port The I/O port to write. >> + @param Value The value to write to the I/O port. >> + >> + @return The value written the I/O port. >> + >> +**/ >> +UINT32 >> +EFIAPI >> +IoWrite32 ( >> + IN UINTN Port, >> + IN UINT32 Value >> + ) >> +{ >> + ASSERT (FALSE); >> + return Value; >> +} >> + >> +/** >> + Reads a 64-bit I/O port. >> + >> + Reads the 64-bit I/O port specified by Port. The 64-bit read value is returned. >> + This function must guarantee that all I/O read and write operations are >> + serialized. >> + >> + If 64-bit I/O port operations are not supported, then ASSERT(). >> + If Port is not aligned on a 64-bit boundary, then ASSERT(). >> + >> + @param Port The I/O port to read. >> + >> + @return The value read. >> + >> +**/ >> +UINT64 >> +EFIAPI >> +IoRead64 ( >> + IN UINTN Port >> + ) >> +{ >> + ASSERT (FALSE); >> + return 0; >> +} >> + >> +/** >> + Writes a 64-bit I/O port. >> + >> + Writes the 64-bit I/O port specified by Port with the value specified by Value >> + and returns Value. This function must guarantee that all I/O read and write >> + operations are serialized. >> + >> + If 64-bit I/O port operations are not supported, then ASSERT(). >> + If Port is not aligned on a 64-bit boundary, then ASSERT(). >> + >> + @param Port The I/O port to write. >> + @param Value The value to write to the I/O port. >> + >> + @return The value written to the I/O port. >> + >> +**/ >> +UINT64 >> +EFIAPI >> +IoWrite64 ( >> + IN UINTN Port, >> + IN UINT64 Value >> + ) >> +{ >> + ASSERT (FALSE); >> + return 0; >> +} >> + >> +/** >> + Reads an 8-bit I/O port fifo into a block of memory. >> + >> + Reads the 8-bit I/O fifo port specified by Port. >> + The port is read Count times, and the read data is >> + stored in the provided Buffer. >> + >> + This function must guarantee that all I/O read and write operations are >> + serialized. >> + >> + If 8-bit I/O port operations are not supported, then ASSERT(). >> + >> + @param Port The I/O port to read. >> + @param Count The number of times to read I/O port. >> + @param Buffer The buffer to store the read data into. >> + >> +**/ >> +VOID >> +EFIAPI >> +IoReadFifo8 ( >> + IN UINTN Port, >> + IN UINTN Count, >> + OUT VOID *Buffer >> + ) >> +{ >> + ASSERT (FALSE); >> +} >> + >> +/** >> + Writes a block of memory into an 8-bit I/O port fifo. >> + >> + Writes the 8-bit I/O fifo port specified by Port. >> + The port is written Count times, and the write data is >> + retrieved from the provided Buffer. >> + >> + This function must guarantee that all I/O write and write operations are >> + serialized. >> + >> + If 8-bit I/O port operations are not supported, then ASSERT(). >> + >> + @param Port The I/O port to write. >> + @param Count The number of times to write I/O port. >> + @param Buffer The buffer to retrieve the write data from. >> + >> +**/ >> +VOID >> +EFIAPI >> +IoWriteFifo8 ( >> + IN UINTN Port, >> + IN UINTN Count, >> + IN VOID *Buffer >> + ) >> +{ >> + ASSERT (FALSE); >> +} >> + >> +/** >> + Reads a 16-bit I/O port fifo into a block of memory. >> + >> + Reads the 16-bit I/O fifo port specified by Port. >> + The port is read Count times, and the read data is >> + stored in the provided Buffer. >> + >> + This function must guarantee that all I/O read and write operations are >> + serialized. >> + >> + If 16-bit I/O port operations are not supported, then ASSERT(). >> + >> + @param Port The I/O port to read. >> + @param Count The number of times to read I/O port. >> + @param Buffer The buffer to store the read data into. >> + >> +**/ >> +VOID >> +EFIAPI >> +IoReadFifo16 ( >> + IN UINTN Port, >> + IN UINTN Count, >> + OUT VOID *Buffer >> + ) >> +{ >> + ASSERT (FALSE); >> +} >> + >> +/** >> + Writes a block of memory into a 16-bit I/O port fifo. >> + >> + Writes the 16-bit I/O fifo port specified by Port. >> + The port is written Count times, and the write data is >> + retrieved from the provided Buffer. >> + >> + This function must guarantee that all I/O write and write operations are >> + serialized. >> + >> + If 16-bit I/O port operations are not supported, then ASSERT(). >> + >> + @param Port The I/O port to write. >> + @param Count The number of times to write I/O port. >> + @param Buffer The buffer to retrieve the write data from. >> + >> +**/ >> +VOID >> +EFIAPI >> +IoWriteFifo16 ( >> + IN UINTN Port, >> + IN UINTN Count, >> + IN VOID *Buffer >> + ) >> +{ >> + ASSERT (FALSE); >> +} >> + >> +/** >> + Reads a 32-bit I/O port fifo into a block of memory. >> + >> + Reads the 32-bit I/O fifo port specified by Port. >> + The port is read Count times, and the read data is >> + stored in the provided Buffer. >> + >> + This function must guarantee that all I/O read and write operations are >> + serialized. >> + >> + If 32-bit I/O port operations are not supported, then ASSERT(). >> + >> + @param Port The I/O port to read. >> + @param Count The number of times to read I/O port. >> + @param Buffer The buffer to store the read data into. >> + >> +**/ >> +VOID >> +EFIAPI >> +IoReadFifo32 ( >> + IN UINTN Port, >> + IN UINTN Count, >> + OUT VOID *Buffer >> + ) >> +{ >> + ASSERT (FALSE); >> +} >> + >> +/** >> + Writes a block of memory into a 32-bit I/O port fifo. >> + >> + Writes the 32-bit I/O fifo port specified by Port. >> + The port is written Count times, and the write data is >> + retrieved from the provided Buffer. >> + >> + This function must guarantee that all I/O write and write operations are >> + serialized. >> + >> + If 32-bit I/O port operations are not supported, then ASSERT(). >> + >> + @param Port The I/O port to write. >> + @param Count The number of times to write I/O port. >> + @param Buffer The buffer to retrieve the write data from. >> + >> +**/ >> +VOID >> +EFIAPI >> +IoWriteFifo32 ( >> + IN UINTN Port, >> + IN UINTN Count, >> + IN VOID *Buffer >> + ) >> +{ >> + ASSERT (FALSE); >> +} >> + >> +/** >> + Reads an 8-bit MMIO register. >> + >> + Reads the 8-bit MMIO register specified by Address. The 8-bit read value is >> + returned. This function must guarantee that all MMIO read and write >> + operations are serialized. >> + >> + If 8-bit MMIO register operations are not supported, then ASSERT(). >> + >> + @param Address The MMIO register to read. >> + >> + @return The value read. >> + >> +**/ >> +UINT8 >> +EFIAPI >> +MmioRead8 ( >> + IN UINTN Address >> + ) >> +{ >> + return MmioRead8Internal (Address); >> +} >> + >> +/** >> + Writes an 8-bit MMIO register. >> + >> + Writes the 8-bit MMIO register specified by Address with the value specified >> + by Value and returns Value. This function must guarantee that all MMIO read >> + and write operations are serialized. >> + >> + If 8-bit MMIO register operations are not supported, then ASSERT(). >> + >> + @param Address The MMIO register to write. >> + @param Value The value to write to the MMIO register. >> + >> +**/ >> +UINT8 >> +EFIAPI >> +MmioWrite8 ( >> + IN UINTN Address, >> + IN UINT8 Value >> + ) >> +{ >> + MmioWrite8Internal (Address, Value); >> + return Value; >> +} >> + >> +/** >> + Reads a 16-bit MMIO register. >> + >> + Reads the 16-bit MMIO register specified by Address. The 16-bit read value is >> + returned. This function must guarantee that all MMIO read and write >> + operations are serialized. >> + >> + If 16-bit MMIO register operations are not supported, then ASSERT(). >> + >> + @param Address The MMIO register to read. >> + >> + @return The value read. >> + >> +**/ >> +UINT16 >> +EFIAPI >> +MmioRead16 ( >> + IN UINTN Address >> + ) >> +{ >> + ASSERT ((Address & 1) == 0); >> + >> + return MmioRead16Internal (Address); >> +} >> + >> +/** >> + Writes a 16-bit MMIO register. >> + >> + Writes the 16-bit MMIO register specified by Address with the value specified >> + by Value and returns Value. This function must guarantee that all MMIO read >> + and write operations are serialized. >> + >> + If 16-bit MMIO register operations are not supported, then ASSERT(). >> + >> + @param Address The MMIO register to write. >> + @param Value The value to write to the MMIO register. >> + >> +**/ >> +UINT16 >> +EFIAPI >> +MmioWrite16 ( >> + IN UINTN Address, >> + IN UINT16 Value >> + ) >> +{ >> + ASSERT ((Address & 1) == 0); >> + >> + MmioWrite16Internal (Address, Value); >> + return Value; >> +} >> + >> +/** >> + Reads a 32-bit MMIO register. >> + >> + Reads the 32-bit MMIO register specified by Address. The 32-bit read value is >> + returned. This function must guarantee that all MMIO read and write >> + operations are serialized. >> + >> + If 32-bit MMIO register operations are not supported, then ASSERT(). >> + >> + @param Address The MMIO register to read. >> + >> + @return The value read. >> + >> +**/ >> +UINT32 >> +EFIAPI >> +MmioRead32 ( >> + IN UINTN Address >> + ) >> +{ >> + ASSERT ((Address & 3) == 0); >> + >> + return MmioRead32Internal (Address); >> +} >> + >> +/** >> + Writes a 32-bit MMIO register. >> + >> + Writes the 32-bit MMIO register specified by Address with the value specified >> + by Value and returns Value. This function must guarantee that all MMIO read >> + and write operations are serialized. >> + >> + If 32-bit MMIO register operations are not supported, then ASSERT(). >> + >> + @param Address The MMIO register to write. >> + @param Value The value to write to the MMIO register. >> + >> +**/ >> +UINT32 >> +EFIAPI >> +MmioWrite32 ( >> + IN UINTN Address, >> + IN UINT32 Value >> + ) >> +{ >> + ASSERT ((Address & 3) == 0); >> + >> + MmioWrite32Internal (Address, Value); >> + return Value; >> +} >> + >> +/** >> + Reads a 64-bit MMIO register. >> + >> + Reads the 64-bit MMIO register specified by Address. The 64-bit read value is >> + returned. This function must guarantee that all MMIO read and write >> + operations are serialized. >> + >> + If 64-bit MMIO register operations are not supported, then ASSERT(). >> + >> + @param Address The MMIO register to read. >> + >> + @return The value read. >> + >> +**/ >> +UINT64 >> +EFIAPI >> +MmioRead64 ( >> + IN UINTN Address >> + ) >> +{ >> + ASSERT ((Address & 7) == 0); >> + >> + return MmioRead64Internal (Address); >> +} >> + >> +/** >> + Writes a 64-bit MMIO register. >> + >> + Writes the 64-bit MMIO register specified by Address with the value specified >> + by Value and returns Value. This function must guarantee that all MMIO read >> + and write operations are serialized. >> + >> + If 64-bit MMIO register operations are not supported, then ASSERT(). >> + >> + @param Address The MMIO register to write. >> + @param Value The value to write to the MMIO register. >> + >> +**/ >> +UINT64 >> +EFIAPI >> +MmioWrite64 ( >> + IN UINTN Address, >> + IN UINT64 Value >> + ) >> +{ >> + ASSERT ((Address & 7) == 0); >> + >> + MmioWrite64Internal (Address, Value); >> + return Value; >> +} >> diff --git a/MdePkg/MdePkg.dsc b/MdePkg/MdePkg.dsc >> index 60efd722e9d7..cf20bc3a1fcf 100644 >> --- a/MdePkg/MdePkg.dsc >> +++ b/MdePkg/MdePkg.dsc >> @@ -186,6 +186,7 @@ [Components.EBC] >> MdePkg/Library/UefiRuntimeLib/UefiRuntimeLib.inf >> >> [Components.ARM, Components.AARCH64] >> + MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.inf >> MdePkg/Library/BaseStackCheckLib/BaseStackCheckLib.inf >> >> [BuildOptions] >> -- >> 2.17.1 >> >> _______________________________________________ >> edk2-devel mailing list >> edk2-devel@lists.01.org >> https://lists.01.org/mailman/listinfo/edk2-devel _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
diff --git a/MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.S b/MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.S new file mode 100644 index 000000000000..85f59324270c --- /dev/null +++ b/MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.S @@ -0,0 +1,148 @@ +# +# Copyright (c) 2014-2018, Linaro Limited. All rights reserved. +# +# This program and the accompanying materials are licensed and made available +# under the terms and conditions of the BSD License which accompanies this +# distribution. The full text of the license may be found at +# http://opensource.org/licenses/bsd-license.php +# +# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +# +# + +.text +.align 3 + +GCC_ASM_EXPORT(MmioRead8Internal) +GCC_ASM_EXPORT(MmioWrite8Internal) +GCC_ASM_EXPORT(MmioRead16Internal) +GCC_ASM_EXPORT(MmioWrite16Internal) +GCC_ASM_EXPORT(MmioRead32Internal) +GCC_ASM_EXPORT(MmioWrite32Internal) +GCC_ASM_EXPORT(MmioRead64Internal) +GCC_ASM_EXPORT(MmioWrite64Internal) + +// +// Reads an 8-bit MMIO register. +// +// Reads the 8-bit MMIO register specified by Address. The 8-bit read value is +// returned. This function must guarantee that all MMIO read and write +// operations are serialized. +// +// @param Address The MMIO register to read. +// +// @return The value read. +// +ASM_PFX(MmioRead8Internal): + ldrb w0, [x0] + dmb ld + ret + +// +// Writes an 8-bit MMIO register. +// +// Writes the 8-bit MMIO register specified by Address with the value specified +// by Value and returns Value. This function must guarantee that all MMIO read +// and write operations are serialized. +// +// @param Address The MMIO register to write. +// @param Value The value to write to the MMIO register. +// +ASM_PFX(MmioWrite8Internal): + dmb st + strb w1, [x0] + ret + +// +// Reads a 16-bit MMIO register. +// +// Reads the 16-bit MMIO register specified by Address. The 16-bit read value is +// returned. This function must guarantee that all MMIO read and write +// operations are serialized. +// +// @param Address The MMIO register to read. +// +// @return The value read. +// +ASM_PFX(MmioRead16Internal): + ldrh w0, [x0] + dmb ld + ret + +// +// Writes a 16-bit MMIO register. +// +// Writes the 16-bit MMIO register specified by Address with the value specified +// by Value and returns Value. This function must guarantee that all MMIO read +// and write operations are serialized. +// +// @param Address The MMIO register to write. +// @param Value The value to write to the MMIO register. +// +ASM_PFX(MmioWrite16Internal): + dmb st + strh w1, [x0] + ret + +// +// Reads a 32-bit MMIO register. +// +// Reads the 32-bit MMIO register specified by Address. The 32-bit read value is +// returned. This function must guarantee that all MMIO read and write +// operations are serialized. +// +// @param Address The MMIO register to read. +// +// @return The value read. +// +ASM_PFX(MmioRead32Internal): + ldr w0, [x0] + dmb ld + ret + +// +// Writes a 32-bit MMIO register. +// +// Writes the 32-bit MMIO register specified by Address with the value specified +// by Value and returns Value. This function must guarantee that all MMIO read +// and write operations are serialized. +// +// @param Address The MMIO register to write. +// @param Value The value to write to the MMIO register. +// +ASM_PFX(MmioWrite32Internal): + dmb st + str w1, [x0] + ret + +// +// Reads a 64-bit MMIO register. +// +// Reads the 64-bit MMIO register specified by Address. The 64-bit read value is +// returned. This function must guarantee that all MMIO read and write +// operations are serialized. +// +// @param Address The MMIO register to read. +// +// @return The value read. +// +ASM_PFX(MmioRead64Internal): + ldr x0, [x0] + dmb ld + ret + +// +// Writes a 64-bit MMIO register. +// +// Writes the 64-bit MMIO register specified by Address with the value specified +// by Value and returns Value. This function must guarantee that all MMIO read +// and write operations are serialized. +// +// @param Address The MMIO register to write. +// @param Value The value to write to the MMIO register. +// +ASM_PFX(MmioWrite64Internal): + dmb st + str x1, [x0] + ret diff --git a/MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.asm b/MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.asm new file mode 100644 index 000000000000..bd235a5dd441 --- /dev/null +++ b/MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.asm @@ -0,0 +1,149 @@ +; +; Copyright (c) 2014-2018, Linaro Limited. All rights reserved. +; +; This program and the accompanying materials are licensed and made available +; under the terms and conditions of the BSD License which accompanies this +; distribution. The full text of the license may be found at +; http:;opensource.org/licenses/bsd-license.php +; +; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +; + + +AREA IoLibMmio, CODE, READONLY + +EXPORT MmioRead8Internal +EXPORT MmioWrite8Internal +EXPORT MmioRead16Internal +EXPORT MmioWrite16Internal +EXPORT MmioRead32Internal +EXPORT MmioWrite32Internal +EXPORT MmioRead64Internal +EXPORT MmioWrite64Internal + +; +; Reads an 8-bit MMIO register. +; +; Reads the 8-bit MMIO register specified by Address. The 8-bit read value is +; returned. This function must guarantee that all MMIO read and write +; operations are serialized. +; +; @param Address The MMIO register to read. +; +; @return The value read. +; +MmioRead8Internal + ldrb w0, [x0] + dmb ld + ret + +; +; Writes an 8-bit MMIO register. +; +; Writes the 8-bit MMIO register specified by Address with the value specified +; by Value and returns Value. This function must guarantee that all MMIO read +; and write operations are serialized. +; +; @param Address The MMIO register to write. +; @param Value The value to write to the MMIO register. +; +MmioWrite8Internal + dmb st + strb w1, [x0] + ret + +; +; Reads a 16-bit MMIO register. +; +; Reads the 16-bit MMIO register specified by Address. The 16-bit read value is +; returned. This function must guarantee that all MMIO read and write +; operations are serialized. +; +; @param Address The MMIO register to read. +; +; @return The value read. +; +MmioRead16Internal + ldrh w0, [x0] + dmb ld + ret + +; +; Writes a 16-bit MMIO register. +; +; Writes the 16-bit MMIO register specified by Address with the value specified +; by Value and returns Value. This function must guarantee that all MMIO read +; and write operations are serialized. +; +; @param Address The MMIO register to write. +; @param Value The value to write to the MMIO register. +; +MmioWrite16Internal + dmb st + strh w1, [x0] + ret + +; +; Reads a 32-bit MMIO register. +; +; Reads the 32-bit MMIO register specified by Address. The 32-bit read value is +; returned. This function must guarantee that all MMIO read and write +; operations are serialized. +; +; @param Address The MMIO register to read. +; +; @return The value read. +; +MmioRead32Internal + ldr w0, [x0] + dmb ld + ret + +; +; Writes a 32-bit MMIO register. +; +; Writes the 32-bit MMIO register specified by Address with the value specified +; by Value and returns Value. This function must guarantee that all MMIO read +; and write operations are serialized. +; +; @param Address The MMIO register to write. +; @param Value The value to write to the MMIO register. +; +MmioWrite32Internal + dmb st + str w1, [x0] + ret + +; +; Reads a 64-bit MMIO register. +; +; Reads the 64-bit MMIO register specified by Address. The 64-bit read value is +; returned. This function must guarantee that all MMIO read and write +; operations are serialized. +; +; @param Address The MMIO register to read. +; +; @return The value read. +; +MmioRead64Internal + ldr x0, [x0] + dmb ld + ret + +; +; Writes a 64-bit MMIO register. +; +; Writes the 64-bit MMIO register specified by Address with the value specified +; by Value and returns Value. This function must guarantee that all MMIO read +; and write operations are serialized. +; +; @param Address The MMIO register to write. +; @param Value The value to write to the MMIO register. +; +MmioWrite64Internal + dmb st + str x1, [x0] + ret + + END diff --git a/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.S b/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.S new file mode 100644 index 000000000000..1e91e87fb887 --- /dev/null +++ b/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.S @@ -0,0 +1,145 @@ +# +# Copyright (c) 2014-2018, Linaro Limited. All rights reserved. +# +# This program and the accompanying materials are licensed and made available +# under the terms and conditions of the BSD License which accompanies this +# distribution. The full text of the license may be found at +# http://opensource.org/licenses/bsd-license.php +# +# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +# +# + +GCC_ASM_EXPORT(MmioRead8Internal) +GCC_ASM_EXPORT(MmioWrite8Internal) +GCC_ASM_EXPORT(MmioRead16Internal) +GCC_ASM_EXPORT(MmioWrite16Internal) +GCC_ASM_EXPORT(MmioRead32Internal) +GCC_ASM_EXPORT(MmioWrite32Internal) +GCC_ASM_EXPORT(MmioRead64Internal) +GCC_ASM_EXPORT(MmioWrite64Internal) + +// +// Reads an 8-bit MMIO register. +// +// Reads the 8-bit MMIO register specified by Address. The 8-bit read value is +// returned. This function must guarantee that all MMIO read and write +// operations are serialized. +// +// @param Address The MMIO register to read. +// +// @return The value read. +// +ASM_PFX(MmioRead8Internal): + ldrb r0, [r0] + dmb + bx lr + +// +// Writes an 8-bit MMIO register. +// +// Writes the 8-bit MMIO register specified by Address with the value specified +// by Value and returns Value. This function must guarantee that all MMIO read +// and write operations are serialized. +// +// @param Address The MMIO register to write. +// @param Value The value to write to the MMIO register. +// +ASM_PFX(MmioWrite8Internal): + dmb st + strb r1, [r0] + bx lr + +// +// Reads a 16-bit MMIO register. +// +// Reads the 16-bit MMIO register specified by Address. The 16-bit read value is +// returned. This function must guarantee that all MMIO read and write +// operations are serialized. +// +// @param Address The MMIO register to read. +// +// @return The value read. +// +ASM_PFX(MmioRead16Internal): + ldrh r0, [r0] + dmb + bx lr + +// +// Writes a 16-bit MMIO register. +// +// Writes the 16-bit MMIO register specified by Address with the value specified +// by Value and returns Value. This function must guarantee that all MMIO read +// and write operations are serialized. +// +// @param Address The MMIO register to write. +// @param Value The value to write to the MMIO register. +// +ASM_PFX(MmioWrite16Internal): + dmb st + strh r1, [r0] + bx lr + +// +// Reads a 32-bit MMIO register. +// +// Reads the 32-bit MMIO register specified by Address. The 32-bit read value is +// returned. This function must guarantee that all MMIO read and write +// operations are serialized. +// +// @param Address The MMIO register to read. +// +// @return The value read. +// +ASM_PFX(MmioRead32Internal): + ldr r0, [r0] + dmb + bx lr + +// +// Writes a 32-bit MMIO register. +// +// Writes the 32-bit MMIO register specified by Address with the value specified +// by Value and returns Value. This function must guarantee that all MMIO read +// and write operations are serialized. +// +// @param Address The MMIO register to write. +// @param Value The value to write to the MMIO register. +// +ASM_PFX(MmioWrite32Internal): + dmb st + str r1, [r0] + bx lr + +// +// Reads a 64-bit MMIO register. +// +// Reads the 64-bit MMIO register specified by Address. The 64-bit read value is +// returned. This function must guarantee that all MMIO read and write +// operations are serialized. +// +// @param Address The MMIO register to read. +// +// @return The value read. +// +ASM_PFX(MmioRead64Internal): + ldrd r0, r1, [r0] + dmb + bx lr + +// +// Writes a 64-bit MMIO register. +// +// Writes the 64-bit MMIO register specified by Address with the value specified +// by Value and returns Value. This function must guarantee that all MMIO read +// and write operations are serialized. +// +// @param Address The MMIO register to write. +// @param Value The value to write to the MMIO register. +// +ASM_PFX(MmioWrite64Internal): + dmb st + strd r2, r3, [r0] + bx lr diff --git a/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.asm b/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.asm new file mode 100644 index 000000000000..cff99b86a99c --- /dev/null +++ b/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.asm @@ -0,0 +1,149 @@ +; +; Copyright (c) 2014-2018, Linaro Limited. All rights reserved. +; +; This program and the accompanying materials are licensed and made available +; under the terms and conditions of the BSD License which accompanies this +; distribution. The full text of the license may be found at +; http:;opensource.org/licenses/bsd-license.php +; +; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +; + + +AREA IoLibMmio, CODE, READONLY + +EXPORT MmioRead8Internal +EXPORT MmioWrite8Internal +EXPORT MmioRead16Internal +EXPORT MmioWrite16Internal +EXPORT MmioRead32Internal +EXPORT MmioWrite32Internal +EXPORT MmioRead64Internal +EXPORT MmioWrite64Internal + +; +; Reads an 8-bit MMIO register. +; +; Reads the 8-bit MMIO register specified by Address. The 8-bit read value is +; returned. This function must guarantee that all MMIO read and write +; operations are serialized. +; +; @param Address The MMIO register to read. +; +; @return The value read. +; +MmioRead8Internal + ldrb r0, [r0] + dmb + bx lr + +; +; Writes an 8-bit MMIO register. +; +; Writes the 8-bit MMIO register specified by Address with the value specified +; by Value and returns Value. This function must guarantee that all MMIO read +; and write operations are serialized. +; +; @param Address The MMIO register to write. +; @param Value The value to write to the MMIO register. +; +MmioWrite8Internal + dmb st + strb r1, [r0] + bx lr + +; +; Reads a 16-bit MMIO register. +; +; Reads the 16-bit MMIO register specified by Address. The 16-bit read value is +; returned. This function must guarantee that all MMIO read and write +; operations are serialized. +; +; @param Address The MMIO register to read. +; +; @return The value read. +; +MmioRead16Internal + ldrh r0, [r0] + dmb + bx lr + +; +; Writes a 16-bit MMIO register. +; +; Writes the 16-bit MMIO register specified by Address with the value specified +; by Value and returns Value. This function must guarantee that all MMIO read +; and write operations are serialized. +; +; @param Address The MMIO register to write. +; @param Value The value to write to the MMIO register. +; +MmioWrite16Internal + dmb st + strh r1, [r0] + bx lr + +; +; Reads a 32-bit MMIO register. +; +; Reads the 32-bit MMIO register specified by Address. The 32-bit read value is +; returned. This function must guarantee that all MMIO read and write +; operations are serialized. +; +; @param Address The MMIO register to read. +; +; @return The value read. +; +MmioRead32Internal + ldr r0, [r0] + dmb + bx lr + +; +; Writes a 32-bit MMIO register. +; +; Writes the 32-bit MMIO register specified by Address with the value specified +; by Value and returns Value. This function must guarantee that all MMIO read +; and write operations are serialized. +; +; @param Address The MMIO register to write. +; @param Value The value to write to the MMIO register. +; +MmioWrite32Internal + dmb st + str r1, [r0] + bx lr + +; +; Reads a 64-bit MMIO register. +; +; Reads the 64-bit MMIO register specified by Address. The 64-bit read value is +; returned. This function must guarantee that all MMIO read and write +; operations are serialized. +; +; @param Address The MMIO register to read. +; +; @return The value read. +; +MmioRead64Internal + ldrd r0, r1, [r0] + dmb + bx lr + +; +; Writes a 64-bit MMIO register. +; +; Writes the 64-bit MMIO register specified by Address with the value specified +; by Value and returns Value. This function must guarantee that all MMIO read +; and write operations are serialized. +; +; @param Address The MMIO register to write. +; @param Value The value to write to the MMIO register. +; +MmioWrite64Internal + dmb st + strd r2, r3, [r0] + bx lr + + END diff --git a/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.inf b/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.inf new file mode 100644 index 000000000000..1e39ad533fac --- /dev/null +++ b/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.inf @@ -0,0 +1,52 @@ +## @file +# Instance of I/O Library using KVM/ARM safe assembler routines +# +# Copyright (c) 2007 - 2015, Intel Corporation. All rights reserved.<BR> +# Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> +# Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR> +# Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR> +# +# This program and the accompanying materials are licensed and made available +# under the terms and conditions of the BSD License which accompanies this +# distribution. The full text of the license may be found at +# http://opensource.org/licenses/bsd-license.php. +# +# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +# +## + +[Defines] + INF_VERSION = 0x0001001A + BASE_NAME = BaseIoLibIntrinsicArmVirt + MODULE_UNI_FILE = BaseIoLibIntrinsicArmVirt.uni + FILE_GUID = 217102b4-b465-4a1d-a2de-93dd385ec480 + MODULE_TYPE = BASE + VERSION_STRING = 1.0 + LIBRARY_CLASS = IoLib + +# +# VALID_ARCHITECTURES = ARM AARCH64 +# + +[Sources] + IoLibMmioBuffer.c + BaseIoLibIntrinsicInternal.h + IoHighLevel.c + +[Sources.ARM] + IoLibArmVirt.c + Arm/ArmVirtMmio.S | GCC + Arm/ArmVirtMmio.asm | RVCT + +[Sources.AARCH64] + IoLibArmVirt.c + AArch64/ArmVirtMmio.S | GCC + AArch64/ArmVirtMmio.asm | MSFT + +[Packages] + MdePkg/MdePkg.dec + +[LibraryClasses] + DebugLib + BaseLib diff --git a/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.uni b/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.uni new file mode 100644 index 000000000000..a1109c520453 --- /dev/null +++ b/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.uni @@ -0,0 +1,23 @@ +// /** @file +// Instance of I/O Library using KVM/ARM safe assembler routines +// +// Copyright (c) 2007 - 2015, Intel Corporation. All rights reserved.<BR> +// Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> +// Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR> +// Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR> +// +// This program and the accompanying materials are licensed and made available +// under the terms and conditions of the BSD License which accompanies this +// distribution. The full text of the license may be found at +// http://opensource.org/licenses/bsd-license.php. +// +// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +// +// **/ + + +#string STR_MODULE_ABSTRACT #language en-US "Instance of I/O Library using KVM/ARM safe assembler routines" + +#string STR_MODULE_DESCRIPTION #language en-US "I/O Library that uses assembler routines to perform MMIO accesses, to prevent link time code generation under LTO from emitting instructions that KVM on ARM cannot deal with." + diff --git a/MdePkg/Library/BaseIoLibIntrinsic/IoLibArmVirt.c b/MdePkg/Library/BaseIoLibIntrinsic/IoLibArmVirt.c new file mode 100644 index 000000000000..1a1b77967d55 --- /dev/null +++ b/MdePkg/Library/BaseIoLibIntrinsic/IoLibArmVirt.c @@ -0,0 +1,733 @@ +/** @file + I/O Library for ARM. + + Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR> + Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> + Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR> + Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR> + + This program and the accompanying materials are licensed and made available + under the terms and conditions of the BSD License which accompanies this + distribution. The full text of the license may be found at + http://opensource.org/licenses/bsd-license.php. + + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + +**/ + +#include "BaseIoLibIntrinsicInternal.h" + +/** + Reads an 8-bit MMIO register. + + Reads the 8-bit MMIO register specified by Address. The 8-bit read value is + returned. This function must guarantee that all MMIO read and write + operations are serialized. + + @param Address The MMIO register to read. + + @return The value read. + +**/ +UINT8 +EFIAPI +MmioRead8Internal ( + IN UINTN Address + ); + +/** + Writes an 8-bit MMIO register. + + Writes the 8-bit MMIO register specified by Address with the value specified + by Value and returns Value. This function must guarantee that all MMIO read + and write operations are serialized. + + @param Address The MMIO register to write. + @param Value The value to write to the MMIO register. + +**/ +VOID +EFIAPI +MmioWrite8Internal ( + IN UINTN Address, + IN UINT8 Value + ); + +/** + Reads a 16-bit MMIO register. + + Reads the 16-bit MMIO register specified by Address. The 16-bit read value is + returned. This function must guarantee that all MMIO read and write + operations are serialized. + + @param Address The MMIO register to read. + + @return The value read. + +**/ +UINT16 +EFIAPI +MmioRead16Internal ( + IN UINTN Address + ); + +/** + Writes a 16-bit MMIO register. + + Writes the 16-bit MMIO register specified by Address with the value specified + by Value and returns Value. This function must guarantee that all MMIO read + and write operations are serialized. + + @param Address The MMIO register to write. + @param Value The value to write to the MMIO register. + +**/ +VOID +EFIAPI +MmioWrite16Internal ( + IN UINTN Address, + IN UINT16 Value + ); + +/** + Reads a 32-bit MMIO register. + + Reads the 32-bit MMIO register specified by Address. The 32-bit read value is + returned. This function must guarantee that all MMIO read and write + operations are serialized. + + @param Address The MMIO register to read. + + @return The value read. + +**/ +UINT32 +EFIAPI +MmioRead32Internal ( + IN UINTN Address + ); + +/** + Writes a 32-bit MMIO register. + + Writes the 32-bit MMIO register specified by Address with the value specified + by Value and returns Value. This function must guarantee that all MMIO read + and write operations are serialized. + + @param Address The MMIO register to write. + @param Value The value to write to the MMIO register. + +**/ +VOID +EFIAPI +MmioWrite32Internal ( + IN UINTN Address, + IN UINT32 Value + ); + +/** + Reads a 64-bit MMIO register. + + Reads the 64-bit MMIO register specified by Address. The 64-bit read value is + returned. This function must guarantee that all MMIO read and write + operations are serialized. + + @param Address The MMIO register to read. + + @return The value read. + +**/ +UINT64 +EFIAPI +MmioRead64Internal ( + IN UINTN Address + ); + +/** + Writes a 64-bit MMIO register. + + Writes the 64-bit MMIO register specified by Address with the value specified + by Value and returns Value. This function must guarantee that all MMIO read + and write operations are serialized. + + @param Address The MMIO register to write. + @param Value The value to write to the MMIO register. + +**/ +VOID +EFIAPI +MmioWrite64Internal ( + IN UINTN Address, + IN UINT64 Value + ); + +/** + Reads an 8-bit I/O port. + + Reads the 8-bit I/O port specified by Port. The 8-bit read value is returned. + This function must guarantee that all I/O read and write operations are + serialized. + + If 8-bit I/O port operations are not supported, then ASSERT(). + + @param Port The I/O port to read. + + @return The value read. + +**/ +UINT8 +EFIAPI +IoRead8 ( + IN UINTN Port + ) +{ + ASSERT (FALSE); + return 0; +} + +/** + Writes an 8-bit I/O port. + + Writes the 8-bit I/O port specified by Port with the value specified by Value + and returns Value. This function must guarantee that all I/O read and write + operations are serialized. + + If 8-bit I/O port operations are not supported, then ASSERT(). + + @param Port The I/O port to write. + @param Value The value to write to the I/O port. + + @return The value written the I/O port. + +**/ +UINT8 +EFIAPI +IoWrite8 ( + IN UINTN Port, + IN UINT8 Value + ) +{ + ASSERT (FALSE); + return Value; +} + +/** + Reads a 16-bit I/O port. + + Reads the 16-bit I/O port specified by Port. The 16-bit read value is returned. + This function must guarantee that all I/O read and write operations are + serialized. + + If 16-bit I/O port operations are not supported, then ASSERT(). + + @param Port The I/O port to read. + + @return The value read. + +**/ +UINT16 +EFIAPI +IoRead16 ( + IN UINTN Port + ) +{ + ASSERT (FALSE); + return 0; +} + +/** + Writes a 16-bit I/O port. + + Writes the 16-bit I/O port specified by Port with the value specified by Value + and returns Value. This function must guarantee that all I/O read and write + operations are serialized. + + If 16-bit I/O port operations are not supported, then ASSERT(). + + @param Port The I/O port to write. + @param Value The value to write to the I/O port. + + @return The value written the I/O port. + +**/ +UINT16 +EFIAPI +IoWrite16 ( + IN UINTN Port, + IN UINT16 Value + ) +{ + ASSERT (FALSE); + return Value; +} + +/** + Reads a 32-bit I/O port. + + Reads the 32-bit I/O port specified by Port. The 32-bit read value is returned. + This function must guarantee that all I/O read and write operations are + serialized. + + If 32-bit I/O port operations are not supported, then ASSERT(). + + @param Port The I/O port to read. + + @return The value read. + +**/ +UINT32 +EFIAPI +IoRead32 ( + IN UINTN Port + ) +{ + ASSERT (FALSE); + return 0; +} + +/** + Writes a 32-bit I/O port. + + Writes the 32-bit I/O port specified by Port with the value specified by Value + and returns Value. This function must guarantee that all I/O read and write + operations are serialized. + + If 32-bit I/O port operations are not supported, then ASSERT(). + + @param Port The I/O port to write. + @param Value The value to write to the I/O port. + + @return The value written the I/O port. + +**/ +UINT32 +EFIAPI +IoWrite32 ( + IN UINTN Port, + IN UINT32 Value + ) +{ + ASSERT (FALSE); + return Value; +} + +/** + Reads a 64-bit I/O port. + + Reads the 64-bit I/O port specified by Port. The 64-bit read value is returned. + This function must guarantee that all I/O read and write operations are + serialized. + + If 64-bit I/O port operations are not supported, then ASSERT(). + If Port is not aligned on a 64-bit boundary, then ASSERT(). + + @param Port The I/O port to read. + + @return The value read. + +**/ +UINT64 +EFIAPI +IoRead64 ( + IN UINTN Port + ) +{ + ASSERT (FALSE); + return 0; +} + +/** + Writes a 64-bit I/O port. + + Writes the 64-bit I/O port specified by Port with the value specified by Value + and returns Value. This function must guarantee that all I/O read and write + operations are serialized. + + If 64-bit I/O port operations are not supported, then ASSERT(). + If Port is not aligned on a 64-bit boundary, then ASSERT(). + + @param Port The I/O port to write. + @param Value The value to write to the I/O port. + + @return The value written to the I/O port. + +**/ +UINT64 +EFIAPI +IoWrite64 ( + IN UINTN Port, + IN UINT64 Value + ) +{ + ASSERT (FALSE); + return 0; +} + +/** + Reads an 8-bit I/O port fifo into a block of memory. + + Reads the 8-bit I/O fifo port specified by Port. + The port is read Count times, and the read data is + stored in the provided Buffer. + + This function must guarantee that all I/O read and write operations are + serialized. + + If 8-bit I/O port operations are not supported, then ASSERT(). + + @param Port The I/O port to read. + @param Count The number of times to read I/O port. + @param Buffer The buffer to store the read data into. + +**/ +VOID +EFIAPI +IoReadFifo8 ( + IN UINTN Port, + IN UINTN Count, + OUT VOID *Buffer + ) +{ + ASSERT (FALSE); +} + +/** + Writes a block of memory into an 8-bit I/O port fifo. + + Writes the 8-bit I/O fifo port specified by Port. + The port is written Count times, and the write data is + retrieved from the provided Buffer. + + This function must guarantee that all I/O write and write operations are + serialized. + + If 8-bit I/O port operations are not supported, then ASSERT(). + + @param Port The I/O port to write. + @param Count The number of times to write I/O port. + @param Buffer The buffer to retrieve the write data from. + +**/ +VOID +EFIAPI +IoWriteFifo8 ( + IN UINTN Port, + IN UINTN Count, + IN VOID *Buffer + ) +{ + ASSERT (FALSE); +} + +/** + Reads a 16-bit I/O port fifo into a block of memory. + + Reads the 16-bit I/O fifo port specified by Port. + The port is read Count times, and the read data is + stored in the provided Buffer. + + This function must guarantee that all I/O read and write operations are + serialized. + + If 16-bit I/O port operations are not supported, then ASSERT(). + + @param Port The I/O port to read. + @param Count The number of times to read I/O port. + @param Buffer The buffer to store the read data into. + +**/ +VOID +EFIAPI +IoReadFifo16 ( + IN UINTN Port, + IN UINTN Count, + OUT VOID *Buffer + ) +{ + ASSERT (FALSE); +} + +/** + Writes a block of memory into a 16-bit I/O port fifo. + + Writes the 16-bit I/O fifo port specified by Port. + The port is written Count times, and the write data is + retrieved from the provided Buffer. + + This function must guarantee that all I/O write and write operations are + serialized. + + If 16-bit I/O port operations are not supported, then ASSERT(). + + @param Port The I/O port to write. + @param Count The number of times to write I/O port. + @param Buffer The buffer to retrieve the write data from. + +**/ +VOID +EFIAPI +IoWriteFifo16 ( + IN UINTN Port, + IN UINTN Count, + IN VOID *Buffer + ) +{ + ASSERT (FALSE); +} + +/** + Reads a 32-bit I/O port fifo into a block of memory. + + Reads the 32-bit I/O fifo port specified by Port. + The port is read Count times, and the read data is + stored in the provided Buffer. + + This function must guarantee that all I/O read and write operations are + serialized. + + If 32-bit I/O port operations are not supported, then ASSERT(). + + @param Port The I/O port to read. + @param Count The number of times to read I/O port. + @param Buffer The buffer to store the read data into. + +**/ +VOID +EFIAPI +IoReadFifo32 ( + IN UINTN Port, + IN UINTN Count, + OUT VOID *Buffer + ) +{ + ASSERT (FALSE); +} + +/** + Writes a block of memory into a 32-bit I/O port fifo. + + Writes the 32-bit I/O fifo port specified by Port. + The port is written Count times, and the write data is + retrieved from the provided Buffer. + + This function must guarantee that all I/O write and write operations are + serialized. + + If 32-bit I/O port operations are not supported, then ASSERT(). + + @param Port The I/O port to write. + @param Count The number of times to write I/O port. + @param Buffer The buffer to retrieve the write data from. + +**/ +VOID +EFIAPI +IoWriteFifo32 ( + IN UINTN Port, + IN UINTN Count, + IN VOID *Buffer + ) +{ + ASSERT (FALSE); +} + +/** + Reads an 8-bit MMIO register. + + Reads the 8-bit MMIO register specified by Address. The 8-bit read value is + returned. This function must guarantee that all MMIO read and write + operations are serialized. + + If 8-bit MMIO register operations are not supported, then ASSERT(). + + @param Address The MMIO register to read. + + @return The value read. + +**/ +UINT8 +EFIAPI +MmioRead8 ( + IN UINTN Address + ) +{ + return MmioRead8Internal (Address); +} + +/** + Writes an 8-bit MMIO register. + + Writes the 8-bit MMIO register specified by Address with the value specified + by Value and returns Value. This function must guarantee that all MMIO read + and write operations are serialized. + + If 8-bit MMIO register operations are not supported, then ASSERT(). + + @param Address The MMIO register to write. + @param Value The value to write to the MMIO register. + +**/ +UINT8 +EFIAPI +MmioWrite8 ( + IN UINTN Address, + IN UINT8 Value + ) +{ + MmioWrite8Internal (Address, Value); + return Value; +} + +/** + Reads a 16-bit MMIO register. + + Reads the 16-bit MMIO register specified by Address. The 16-bit read value is + returned. This function must guarantee that all MMIO read and write + operations are serialized. + + If 16-bit MMIO register operations are not supported, then ASSERT(). + + @param Address The MMIO register to read. + + @return The value read. + +**/ +UINT16 +EFIAPI +MmioRead16 ( + IN UINTN Address + ) +{ + ASSERT ((Address & 1) == 0); + + return MmioRead16Internal (Address); +} + +/** + Writes a 16-bit MMIO register. + + Writes the 16-bit MMIO register specified by Address with the value specified + by Value and returns Value. This function must guarantee that all MMIO read + and write operations are serialized. + + If 16-bit MMIO register operations are not supported, then ASSERT(). + + @param Address The MMIO register to write. + @param Value The value to write to the MMIO register. + +**/ +UINT16 +EFIAPI +MmioWrite16 ( + IN UINTN Address, + IN UINT16 Value + ) +{ + ASSERT ((Address & 1) == 0); + + MmioWrite16Internal (Address, Value); + return Value; +} + +/** + Reads a 32-bit MMIO register. + + Reads the 32-bit MMIO register specified by Address. The 32-bit read value is + returned. This function must guarantee that all MMIO read and write + operations are serialized. + + If 32-bit MMIO register operations are not supported, then ASSERT(). + + @param Address The MMIO register to read. + + @return The value read. + +**/ +UINT32 +EFIAPI +MmioRead32 ( + IN UINTN Address + ) +{ + ASSERT ((Address & 3) == 0); + + return MmioRead32Internal (Address); +} + +/** + Writes a 32-bit MMIO register. + + Writes the 32-bit MMIO register specified by Address with the value specified + by Value and returns Value. This function must guarantee that all MMIO read + and write operations are serialized. + + If 32-bit MMIO register operations are not supported, then ASSERT(). + + @param Address The MMIO register to write. + @param Value The value to write to the MMIO register. + +**/ +UINT32 +EFIAPI +MmioWrite32 ( + IN UINTN Address, + IN UINT32 Value + ) +{ + ASSERT ((Address & 3) == 0); + + MmioWrite32Internal (Address, Value); + return Value; +} + +/** + Reads a 64-bit MMIO register. + + Reads the 64-bit MMIO register specified by Address. The 64-bit read value is + returned. This function must guarantee that all MMIO read and write + operations are serialized. + + If 64-bit MMIO register operations are not supported, then ASSERT(). + + @param Address The MMIO register to read. + + @return The value read. + +**/ +UINT64 +EFIAPI +MmioRead64 ( + IN UINTN Address + ) +{ + ASSERT ((Address & 7) == 0); + + return MmioRead64Internal (Address); +} + +/** + Writes a 64-bit MMIO register. + + Writes the 64-bit MMIO register specified by Address with the value specified + by Value and returns Value. This function must guarantee that all MMIO read + and write operations are serialized. + + If 64-bit MMIO register operations are not supported, then ASSERT(). + + @param Address The MMIO register to write. + @param Value The value to write to the MMIO register. + +**/ +UINT64 +EFIAPI +MmioWrite64 ( + IN UINTN Address, + IN UINT64 Value + ) +{ + ASSERT ((Address & 7) == 0); + + MmioWrite64Internal (Address, Value); + return Value; +} diff --git a/MdePkg/MdePkg.dsc b/MdePkg/MdePkg.dsc index 60efd722e9d7..cf20bc3a1fcf 100644 --- a/MdePkg/MdePkg.dsc +++ b/MdePkg/MdePkg.dsc @@ -186,6 +186,7 @@ [Components.EBC] MdePkg/Library/UefiRuntimeLib/UefiRuntimeLib.inf [Components.ARM, Components.AARCH64] + MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.inf MdePkg/Library/BaseStackCheckLib/BaseStackCheckLib.inf [BuildOptions]
KVM on ARM refuses to decode load/store instructions used to perform I/O to emulated devices, and instead relies on the exception syndrome information to describe the operand register, access size, etc. This is only possible for instructions that have a single input/output register (as opposed to ones that increment the offset register, or load/store pair instructions, etc). Otherwise, QEMU crashes with the following error error: kvm run failed Function not implemented R00=01010101 R01=00000008 R02=00000048 R03=08000820 R04=00000120 R05=7faaa0e0 R06=7faaa0dc R07=7faaa0e8 R08=7faaa0ec R09=7faaa088 R10=000000ff R11=00000080 R12=ff000000 R13=7fccfe08 R14=7faa835f R15=7faa887c PSR=800001f3 N--- T svc32 QEMU: Terminated and KVM produces a warning such as the following in the kernel log kvm [17646]: load/store instruction decoding not implemented The IoLib implementation provided by MdePkg/Library/BaseIoLibIntrinsic is based on C code, and when LTO is in effect, the MMIO accesses could be merged with, e.g., manipulations of the loop counter, producing opcodes that KVM does not support for emulated MMIO. So let's add a special ArmVirt flavor of this library that implements that actual load/store operations in assembler, ensuring that the instructions involved can be emulated by KVM. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> --- v3: add missing prototype comments in IoLibArmVirt.c remove mention of ASSERT () from description of internal asm routines v2: add missing .uni file split off ArmVirtPkg change add VS2017 version of AArch64 asm file add reference to MdePkg.dsc MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.S | 148 ++++ MdePkg/Library/BaseIoLibIntrinsic/AArch64/ArmVirtMmio.asm | 149 ++++ MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.S | 145 ++++ MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.asm | 149 ++++ MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.inf | 52 ++ MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicArmVirt.uni | 23 + MdePkg/Library/BaseIoLibIntrinsic/IoLibArmVirt.c | 733 ++++++++++++++++++++ MdePkg/MdePkg.dsc | 1 + 8 files changed, 1400 insertions(+) -- 2.17.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel