| Message ID | 20200507151819.28444-5-peter.maydell@linaro.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | docs/system: Document some arm board models | expand |
On Thu, May 07, 2020 at 04:18:18PM +0100, Peter Maydell wrote: > Add basic documentation of the MPS2 board models. > Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> > Signed-off-by: Peter Maydell <peter.maydell@linaro.org> > --- > docs/system/arm/mps2.rst | 29 +++++++++++++++++++++++++++++ > docs/system/target-arm.rst | 1 + > MAINTAINERS | 1 + > 3 files changed, 31 insertions(+) > create mode 100644 docs/system/arm/mps2.rst > > diff --git a/docs/system/arm/mps2.rst b/docs/system/arm/mps2.rst > new file mode 100644 > index 00000000000..3a98cb59b0d > --- /dev/null > +++ b/docs/system/arm/mps2.rst > @@ -0,0 +1,29 @@ > +Arm MPS2 boards (``mps2-an385``, ``mps2-an505``, ``mps2-an511``, ``mps2-an521``) > +================================================================================ > + > +These board models all use Arm M-profile CPUs. > + > +The Arm MPS2 and MPS2+ dev boards are FPGA based (the 2+ has a bigger > +FPGA but is otherwise the same as the 2). Since the CPU itself > +and most of the devices are in the FPGA, the details of the board > +as seen by the guest depend significantly on the FPGA image. > + > +QEMU models the following FPGA images: > + > +``mps2-an385`` > + Cortex-M3 as documented in ARM Application Note AN385 > +``mps2-an511`` > + Cortex-M3 'DesignStart' as documented in AN511 > +``mps2-an505`` > + Cortex-M33 as documented in ARM Application Note AN505 > +``mps2-an521`` > + Dual Cortex-M33 as documented in Application Note AN521 > + > +Differences between QEMU and real hardware: > + > +- AN385 remapping of low 16K of memory to either ZBT SSRAM1 or to > + block RAM is unimplemented (QEMU always maps this to ZBT SSRAM1, as > + if zbt_boot_ctrl is always zero) > +- QEMU provides a LAN9118 ethernet rather than LAN9220; the only guest > + visible difference is that the LAN9118 doesn't support checksum > + offloading > diff --git a/docs/system/target-arm.rst b/docs/system/target-arm.rst > index 4779293d731..15bcf9f81f0 100644 > --- a/docs/system/target-arm.rst > +++ b/docs/system/target-arm.rst > @@ -71,6 +71,7 @@ undocumented; you can get a complete list by running > :maxdepth: 1 > > arm/integratorcp > + arm/mps2 > arm/realview > arm/versatile > arm/vexpress > diff --git a/MAINTAINERS b/MAINTAINERS > index 74cff1c3818..ea7bdd359e0 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -699,6 +699,7 @@ F: hw/misc/armsse-cpuid.c > F: include/hw/misc/armsse-cpuid.h > F: hw/misc/armsse-mhu.c > F: include/hw/misc/armsse-mhu.h > +F: docs/system/arm/mps2.rst > > Musca > M: Peter Maydell <peter.maydell@linaro.org> > -- > 2.20.1 > >
Peter Maydell <peter.maydell@linaro.org> writes: > Add basic documentation of the MPS2 board models. > > Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> -- Alex Bennée
diff --git a/docs/system/arm/mps2.rst b/docs/system/arm/mps2.rst new file mode 100644 index 00000000000..3a98cb59b0d --- /dev/null +++ b/docs/system/arm/mps2.rst @@ -0,0 +1,29 @@ +Arm MPS2 boards (``mps2-an385``, ``mps2-an505``, ``mps2-an511``, ``mps2-an521``) +================================================================================ + +These board models all use Arm M-profile CPUs. + +The Arm MPS2 and MPS2+ dev boards are FPGA based (the 2+ has a bigger +FPGA but is otherwise the same as the 2). Since the CPU itself +and most of the devices are in the FPGA, the details of the board +as seen by the guest depend significantly on the FPGA image. + +QEMU models the following FPGA images: + +``mps2-an385`` + Cortex-M3 as documented in ARM Application Note AN385 +``mps2-an511`` + Cortex-M3 'DesignStart' as documented in AN511 +``mps2-an505`` + Cortex-M33 as documented in ARM Application Note AN505 +``mps2-an521`` + Dual Cortex-M33 as documented in Application Note AN521 + +Differences between QEMU and real hardware: + +- AN385 remapping of low 16K of memory to either ZBT SSRAM1 or to + block RAM is unimplemented (QEMU always maps this to ZBT SSRAM1, as + if zbt_boot_ctrl is always zero) +- QEMU provides a LAN9118 ethernet rather than LAN9220; the only guest + visible difference is that the LAN9118 doesn't support checksum + offloading diff --git a/docs/system/target-arm.rst b/docs/system/target-arm.rst index 4779293d731..15bcf9f81f0 100644 --- a/docs/system/target-arm.rst +++ b/docs/system/target-arm.rst @@ -71,6 +71,7 @@ undocumented; you can get a complete list by running :maxdepth: 1 arm/integratorcp + arm/mps2 arm/realview arm/versatile arm/vexpress diff --git a/MAINTAINERS b/MAINTAINERS index 74cff1c3818..ea7bdd359e0 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -699,6 +699,7 @@ F: hw/misc/armsse-cpuid.c F: include/hw/misc/armsse-cpuid.h F: hw/misc/armsse-mhu.c F: include/hw/misc/armsse-mhu.h +F: docs/system/arm/mps2.rst Musca M: Peter Maydell <peter.maydell@linaro.org>
Add basic documentation of the MPS2 board models. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- docs/system/arm/mps2.rst | 29 +++++++++++++++++++++++++++++ docs/system/target-arm.rst | 1 + MAINTAINERS | 1 + 3 files changed, 31 insertions(+) create mode 100644 docs/system/arm/mps2.rst -- 2.20.1