[v3,0/7] target/riscv: Expose RV32 cpu to RV64 QEMU

Message

LIU Zhiwei July 3, 2024, 2:49 p.m. UTC

This patch set aims to expose 32-bit RISC-V cpu to RV64 QEMU. Thus
qemu-system-riscv64 can directly boot a RV32 Linux.

This patch set has been tested with 6.9.0 Linux Image.
And add an avocado test in tests/avocado.

v3:
  Rebase to the master branch

v2:
  Remove the line that was inadvertently left in PATCH v1 4/6.
  Add an avocado test.

v1:
  https://mail.gnu.org/archive/html/qemu-riscv/2024-06/msg00501.html

TANG Tiancheng (7):
  target/riscv: Add fw_dynamic_info32 for booting RV32 OpenSBI
  target/riscv: Adjust PMP size for no-MMU RV64 QEMU running RV32
  target/riscv: Correct SXL return value for RV32 in RV64 QEMU
  target/riscv: Detect sxl to set bit width for RV32 in RV64
  target/riscv: Correct mcause/scause bit width for RV32 in RV64 QEMU
  target/riscv: Enable RV32 CPU support in RV64 QEMU
  tests/avocado: Add an avocado test for riscv64

 configs/targets/riscv64-softmmu.mak |  2 +-
 hw/riscv/boot.c                     | 35 +++++++++++++++++----------
 hw/riscv/sifive_u.c                 |  3 ++-
 include/hw/riscv/boot.h             |  4 +++-
 include/hw/riscv/boot_opensbi.h     | 29 ++++++++++++++++++++++
 target/riscv/cpu.c                  | 17 +++++++++----
 target/riscv/cpu.h                  |  5 +++-
 target/riscv/cpu_helper.c           | 25 +++++++++++++------
 target/riscv/pmp.c                  |  2 +-
 tests/avocado/boot_linux_console.py | 37 +++++++++++++++++++++++++++++
 10 files changed, 131 insertions(+), 28 deletions(-)