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[00/13] hw/arm: Implement new machine mps3-an536 (Cortex-R52 MPS3 AN536 FPGA image)

Message ID 20240206132931.38376-1-peter.maydell@linaro.org
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Series hw/arm: Implement new machine mps3-an536 (Cortex-R52 MPS3 AN536 FPGA image) | expand

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Peter Maydell Feb. 6, 2024, 1:29 p.m. UTC 
This patchset implements a new machine type, mps3-an536.  This is
similar to our existing mps2-* and mps3-* machine types in that it is
a model of an FPGA image for the Arm MPS3 development board.  It
differs from our current machine types in being based around an
R-profile CPU, the Cortex-R52, rather than an M-profile CPU.

This patchset implements the board support to a similar level as that
of our M-profile MPS machine types: most but not all devices are
supported.  Some minor missing features are documented in the docs
patch (and already in mps2.rst where they apply to all boards in this
family).  If there's demand (specifically from the Xen development
use case which is motivating this board model) we can look at adding
them.

I have tested with the "selftest" binary supplied with the FPGA
image, and also with a Linux kernel. (The kernel support for this
board is not upstream, but the patches can be found in this lakml thread
https://lore.kernel.org/all/20220630083641.21835-1-vladimir.murzin@arm.com/
or at the git branch
https://gitlab.arm.com/linux-arm/linux-vm/-/tree/staging/rclass-5.19 )
To get some of this guest code to boot I had to make some improvements
to our Cortex-R52 emulation; these are in the first four patches.

thanks
-- PMM

Peter Maydell (13):
  target/arm: Use new CBAR encoding for all v8 CPUs, not all aarch64
    CPUs
  target/arm: The Cortex-R52 has a read-only CBAR
  target/arm: Add Cortex-R52 IMPDEF sysregs
  target/arm: Allow access to SPSR_hyp from hyp mode
  hw/misc/mps2-scc: Fix condition for CFG3 register
  hw/misc/mps2-scc: Factor out which-board conditionals
  hw/misc/mps2-scc: Make changes needed for AN536 FPGA image
  hw/arm/mps3r: Initial skeleton for mps3-an536 board
  hw/arm/mps3r: Add CPUs, GIC, and per-CPU RAM
  hw/arm/mps3r: Add UARTs
  hw/arm/mps3r: Add GPIO, watchdog, dual-timer, I2C devices
  hw/arm/mps3r: Add remaining devices
  docs: Add documentation for the mps3-an536 board

 MAINTAINERS                             |   3 +-
 docs/system/arm/mps2.rst                |  37 +-
 configs/devices/arm-softmmu/default.mak |   1 +
 include/hw/misc/mps2-scc.h              |   1 +
 hw/arm/mps3r.c                          | 640 ++++++++++++++++++++++++
 hw/misc/mps2-scc.c                      | 138 ++++-
 target/arm/helper.c                     |   2 +-
 target/arm/tcg/cpu32.c                  | 109 ++++
 target/arm/tcg/op_helper.c              |  43 +-
 target/arm/tcg/translate.c              |  19 +-
 hw/arm/Kconfig                          |   5 +
 hw/arm/meson.build                      |   1 +
 12 files changed, 955 insertions(+), 44 deletions(-)
 create mode 100644 hw/arm/mps3r.c