[edk2,v2,02/13] ArmVirtPkg: refactor reading of the physical address space size

Message ID 20181126223801.17121-3-ard.biesheuvel@linaro.org
State New
Headers show
Series
  • ArmPkg, ArmVirtPkg: lift 40-bit IPA space limit
Related show

Commit Message

Ard Biesheuvel Nov. 26, 2018, 10:37 p.m.
In preparation of dropping the hardcoded 40-bit limit on the physical
address space when running under virtualization, let's refactor the
code a bit so we read the hardware limit in a single place.

Note that the hardware capabilities may exceed what the architecture
permits when using 4 KB pages, so we need to take ARM_MMU_IDMAP_RANGE
into account as well.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

---
 ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.inf         |  6 ---
 ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoPeiLib.inf      |  6 ---
 ArmVirtPkg/Library/XenVirtMemInfoLib/XenVirtMemInfoLib.inf           |  6 ---
 ArmVirtPkg/Include/Library/ArmVirtMemInfoLib.h                       |  1 +
 ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.c |  5 ++-
 ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c           |  8 +---
 ArmVirtPkg/Library/XenVirtMemInfoLib/XenVirtMemInfoLib.c             |  8 +---
 ArmVirtPkg/Library/QemuVirtMemInfoLib/AArch64/PhysAddrTop.S          | 39 --------------------
 ArmVirtPkg/Library/QemuVirtMemInfoLib/Arm/PhysAddrTop.S              | 24 ------------
 ArmVirtPkg/Library/XenVirtMemInfoLib/AArch64/PhysAddrTop.S           | 39 --------------------
 ArmVirtPkg/Library/XenVirtMemInfoLib/Arm/PhysAddrTop.S               | 24 ------------
 11 files changed, 9 insertions(+), 157 deletions(-)

-- 
2.19.1

_______________________________________________
edk2-devel mailing list
edk2-devel@lists.01.org
https://lists.01.org/mailman/listinfo/edk2-devel

Patch

diff --git a/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.inf b/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.inf
index c72a97f9e78a..f2c461e3b55a 100644
--- a/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.inf
+++ b/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.inf
@@ -24,12 +24,6 @@  [Defines]
 [Sources]
   QemuVirtMemInfoLib.c
 
-[Sources.ARM]
-  Arm/PhysAddrTop.S
-
-[Sources.AARCH64]
-  AArch64/PhysAddrTop.S
-
 [Packages]
   ArmPkg/ArmPkg.dec
   ArmVirtPkg/ArmVirtPkg.dec
diff --git a/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoPeiLib.inf b/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoPeiLib.inf
index e4032d3efb53..f54fb51ee1d4 100644
--- a/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoPeiLib.inf
+++ b/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoPeiLib.inf
@@ -26,12 +26,6 @@  [Sources]
   QemuVirtMemInfoLib.c
   QemuVirtMemInfoPeiLibConstructor.c
 
-[Sources.ARM]
-  Arm/PhysAddrTop.S
-
-[Sources.AARCH64]
-  AArch64/PhysAddrTop.S
-
 [Packages]
   ArmPkg/ArmPkg.dec
   ArmVirtPkg/ArmVirtPkg.dec
diff --git a/ArmVirtPkg/Library/XenVirtMemInfoLib/XenVirtMemInfoLib.inf b/ArmVirtPkg/Library/XenVirtMemInfoLib/XenVirtMemInfoLib.inf
index cd4c805a4db9..ae107810e927 100644
--- a/ArmVirtPkg/Library/XenVirtMemInfoLib/XenVirtMemInfoLib.inf
+++ b/ArmVirtPkg/Library/XenVirtMemInfoLib/XenVirtMemInfoLib.inf
@@ -24,12 +24,6 @@  [Defines]
 [Sources]
   XenVirtMemInfoLib.c
 
-[Sources.ARM]
-  Arm/PhysAddrTop.S
-
-[Sources.AARCH64]
-  AArch64/PhysAddrTop.S
-
 [Packages]
   ArmPkg/ArmPkg.dec
   ArmVirtPkg/ArmVirtPkg.dec
diff --git a/ArmVirtPkg/Include/Library/ArmVirtMemInfoLib.h b/ArmVirtPkg/Include/Library/ArmVirtMemInfoLib.h
index bdf1c513bc6d..15562b35c730 100644
--- a/ArmVirtPkg/Include/Library/ArmVirtMemInfoLib.h
+++ b/ArmVirtPkg/Include/Library/ArmVirtMemInfoLib.h
@@ -35,6 +35,7 @@ 
 VOID
 EFIAPI
 ArmVirtGetMemoryMap (
+  IN  EFI_PHYSICAL_ADDRESS            TopOfAddressSpace,
   OUT ARM_MEMORY_REGION_DESCRIPTOR    **VirtualMemoryMap
   );
 
diff --git a/ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.c b/ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.c
index 05afd1282422..f8c8af987d20 100644
--- a/ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.c
+++ b/ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.c
@@ -15,6 +15,7 @@ 
 
 #include <PiPei.h>
 
+#include <Library/ArmLib.h>
 #include <Library/ArmMmuLib.h>
 #include <Library/ArmVirtMemInfoLib.h>
 #include <Library/DebugLib.h>
@@ -39,7 +40,9 @@  InitMmu (
   RETURN_STATUS                 Status;
 
   // Get Virtual Memory Map from the Platform Library
-  ArmVirtGetMemoryMap (&MemoryTable);
+  ArmVirtGetMemoryMap (MIN (LShiftU64 (1ULL, ArmGetPhysicalAddressBits ()),
+                            ARM_MMU_IDMAP_RANGE),
+                       &MemoryTable);
 
   //Note: Because we called PeiServicesInstallPeiMemory() before to call InitMmu() the MMU Page Table resides in
   //      DRAM (even at the top of DRAM as it is the first permanent memory allocation)
diff --git a/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c b/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c
index 760bcc169cf4..a80454c4802e 100644
--- a/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c
+++ b/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c
@@ -21,11 +21,6 @@ 
 // Number of Virtual Memory Map Descriptors
 #define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS          5
 
-EFI_PHYSICAL_ADDRESS
-ArmGetPhysAddrTop (
-  VOID
-  );
-
 /**
   Return the Virtual Memory Map of your platform
 
@@ -41,6 +36,7 @@  ArmGetPhysAddrTop (
 **/
 VOID
 ArmVirtGetMemoryMap (
+  IN  EFI_PHYSICAL_ADDRESS           TopOfAddressSpace,
   OUT ARM_MEMORY_REGION_DESCRIPTOR   **VirtualMemoryMap
   )
 {
@@ -80,7 +76,7 @@  ArmVirtGetMemoryMap (
 
   // Peripheral space after DRAM
   TopOfMemory = MIN (1ULL << FixedPcdGet8 (PcdPrePiCpuMemorySize),
-                     ArmGetPhysAddrTop ());
+                     TopOfAddressSpace);
   VirtualMemoryTable[2].PhysicalBase = VirtualMemoryTable[0].Length + VirtualMemoryTable[1].Length;
   VirtualMemoryTable[2].VirtualBase  = VirtualMemoryTable[2].PhysicalBase;
   VirtualMemoryTable[2].Length       = TopOfMemory -
diff --git a/ArmVirtPkg/Library/XenVirtMemInfoLib/XenVirtMemInfoLib.c b/ArmVirtPkg/Library/XenVirtMemInfoLib/XenVirtMemInfoLib.c
index 88ff3167cbfd..3d4e3e38c3f1 100644
--- a/ArmVirtPkg/Library/XenVirtMemInfoLib/XenVirtMemInfoLib.c
+++ b/ArmVirtPkg/Library/XenVirtMemInfoLib/XenVirtMemInfoLib.c
@@ -18,11 +18,6 @@ 
 
 STATIC ARM_MEMORY_REGION_DESCRIPTOR  mVirtualMemoryTable[2];
 
-EFI_PHYSICAL_ADDRESS
-ArmGetPhysAddrTop (
-  VOID
-  );
-
 /**
   Return the Virtual Memory Map of your platform
 
@@ -39,6 +34,7 @@  ArmGetPhysAddrTop (
 VOID
 EFIAPI
 ArmVirtGetMemoryMap (
+  IN  EFI_PHYSICAL_ADDRESS           TopOfAddressSpace,
   OUT ARM_MEMORY_REGION_DESCRIPTOR   **VirtualMemoryMap
   )
 {
@@ -51,7 +47,7 @@  ArmVirtGetMemoryMap (
   //
   mVirtualMemoryTable[0].PhysicalBase = 0x0;
   mVirtualMemoryTable[0].VirtualBase  = 0x0;
-  mVirtualMemoryTable[0].Length       = ArmGetPhysAddrTop ();
+  mVirtualMemoryTable[0].Length       = TopOfAddressSpace;
   mVirtualMemoryTable[0].Attributes   = ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;
 
   mVirtualMemoryTable[1].PhysicalBase = 0x0;
diff --git a/ArmVirtPkg/Library/QemuVirtMemInfoLib/AArch64/PhysAddrTop.S b/ArmVirtPkg/Library/QemuVirtMemInfoLib/AArch64/PhysAddrTop.S
deleted file mode 100644
index a1f6a194d59b..000000000000
--- a/ArmVirtPkg/Library/QemuVirtMemInfoLib/AArch64/PhysAddrTop.S
+++ /dev/null
@@ -1,39 +0,0 @@ 
-#
-#  Copyright (c) 2011-2013, ARM Limited. All rights reserved.
-#  Copyright (c) 2016-2017, 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.
-#
-#
-
-#include <AsmMacroIoLibV8.h>
-
-//EFI_PHYSICAL_ADDRESS
-//GetPhysAddrTop (
-//  VOID
-//  );
-ASM_FUNC(ArmGetPhysAddrTop)
-  mrs   x0, id_aa64mmfr0_el1
-  adr   x1, .LPARanges
-  and   x0, x0, #7
-  ldrb  w1, [x1, x0]
-  mov   x0, #1
-  lsl   x0, x0, x1
-  ret
-
-//
-// Bits 0..2 of the AA64MFR0_EL1 system register encode the size of the
-// physical address space support on this CPU:
-// 0 == 32 bits, 1 == 36 bits, etc etc
-// 6 and 7 are reserved
-//
-.LPARanges:
-  .byte 32, 36, 40, 42, 44, 48, -1, -1
-
-ASM_FUNCTION_REMOVE_IF_UNREFERENCED
diff --git a/ArmVirtPkg/Library/QemuVirtMemInfoLib/Arm/PhysAddrTop.S b/ArmVirtPkg/Library/QemuVirtMemInfoLib/Arm/PhysAddrTop.S
deleted file mode 100644
index 9cd81529fb3d..000000000000
--- a/ArmVirtPkg/Library/QemuVirtMemInfoLib/Arm/PhysAddrTop.S
+++ /dev/null
@@ -1,24 +0,0 @@ 
-#
-#  Copyright (c) 2011-2013, ARM Limited. All rights reserved.
-#  Copyright (c) 2014-2017, 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.
-#
-#
-
-#include <AsmMacroIoLib.h>
-
-//EFI_PHYSICAL_ADDRESS
-//GetPhysAddrTop (
-//  VOID
-//  );
-ASM_FUNC(ArmGetPhysAddrTop)
-  mov   r0, #0x00000000
-  mov   r1, #0x10000
-  bx    lr
diff --git a/ArmVirtPkg/Library/XenVirtMemInfoLib/AArch64/PhysAddrTop.S b/ArmVirtPkg/Library/XenVirtMemInfoLib/AArch64/PhysAddrTop.S
deleted file mode 100644
index a1f6a194d59b..000000000000
--- a/ArmVirtPkg/Library/XenVirtMemInfoLib/AArch64/PhysAddrTop.S
+++ /dev/null
@@ -1,39 +0,0 @@ 
-#
-#  Copyright (c) 2011-2013, ARM Limited. All rights reserved.
-#  Copyright (c) 2016-2017, 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.
-#
-#
-
-#include <AsmMacroIoLibV8.h>
-
-//EFI_PHYSICAL_ADDRESS
-//GetPhysAddrTop (
-//  VOID
-//  );
-ASM_FUNC(ArmGetPhysAddrTop)
-  mrs   x0, id_aa64mmfr0_el1
-  adr   x1, .LPARanges
-  and   x0, x0, #7
-  ldrb  w1, [x1, x0]
-  mov   x0, #1
-  lsl   x0, x0, x1
-  ret
-
-//
-// Bits 0..2 of the AA64MFR0_EL1 system register encode the size of the
-// physical address space support on this CPU:
-// 0 == 32 bits, 1 == 36 bits, etc etc
-// 6 and 7 are reserved
-//
-.LPARanges:
-  .byte 32, 36, 40, 42, 44, 48, -1, -1
-
-ASM_FUNCTION_REMOVE_IF_UNREFERENCED
diff --git a/ArmVirtPkg/Library/XenVirtMemInfoLib/Arm/PhysAddrTop.S b/ArmVirtPkg/Library/XenVirtMemInfoLib/Arm/PhysAddrTop.S
deleted file mode 100644
index 9cd81529fb3d..000000000000
--- a/ArmVirtPkg/Library/XenVirtMemInfoLib/Arm/PhysAddrTop.S
+++ /dev/null
@@ -1,24 +0,0 @@ 
-#
-#  Copyright (c) 2011-2013, ARM Limited. All rights reserved.
-#  Copyright (c) 2014-2017, 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.
-#
-#
-
-#include <AsmMacroIoLib.h>
-
-//EFI_PHYSICAL_ADDRESS
-//GetPhysAddrTop (
-//  VOID
-//  );
-ASM_FUNC(ArmGetPhysAddrTop)
-  mov   r0, #0x00000000
-  mov   r1, #0x10000
-  bx    lr