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target/riscv: Add max32 CPU for RV64 QEMU

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We may need 32-bit max for RV64 QEMU. Thus we add these two CPUs
for RV64 QEMU.

The reason we don't expose them to RV32 QEMU is that we already have
max cpu with the same configuration. Another reason is that we want
to follow the RISC-V custom where addw instruction doesn't exist in
RV32 CPU.

Signed-off-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Suggested-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20240919055048.562-8-zhiwei_liu@linux.alibaba.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
LIU Zhiwei 2024-09-19 13:50:47 +08:00 committed by Alistair Francis
parent e087bd4de3
commit 48cea772c3
2 changed files with 8 additions and 5 deletions
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1
target/riscv/cpu-qom.h
View File

@ -30,6 +30,7 @@
#define RISCV_CPU_TYPE_NAME(name) (name RISCV_CPU_TYPE_SUFFIX)
#define TYPE_RISCV_CPU_MAX RISCV_CPU_TYPE_NAME("max")
#define TYPE_RISCV_CPU_MAX32 RISCV_CPU_TYPE_NAME("max32")
#define TYPE_RISCV_CPU_BASE32 RISCV_CPU_TYPE_NAME("rv32")
#define TYPE_RISCV_CPU_BASE64 RISCV_CPU_TYPE_NAME("rv64")
#define TYPE_RISCV_CPU_BASE128 RISCV_CPU_TYPE_NAME("x-rv128")

12
target/riscv/cpu.c
View File

@ -449,11 +449,9 @@ static void riscv_max_cpu_init(Object *obj)
env->priv_ver = PRIV_VERSION_LATEST;
#ifndef CONFIG_USER_ONLY
#ifdef TARGET_RISCV32
set_satp_mode_max_supported(cpu, VM_1_10_SV32);
#else
set_satp_mode_max_supported(cpu, VM_1_10_SV57);
#endif
set_satp_mode_max_supported(RISCV_CPU(obj),
riscv_cpu_mxl(&RISCV_CPU(obj)->env) == MXL_RV32 ?
VM_1_10_SV32 : VM_1_10_SV57);
#endif
}
@ -2959,6 +2957,10 @@ static const TypeInfo riscv_cpu_type_infos[] = {
DEFINE_BARE_CPU(TYPE_RISCV_CPU_RV32E, MXL_RV32, rv32e_bare_cpu_init),
#endif
#if (defined(TARGET_RISCV64) && !defined(CONFIG_USER_ONLY))
DEFINE_DYNAMIC_CPU(TYPE_RISCV_CPU_MAX32, MXL_RV32, riscv_max_cpu_init),
#endif
#if defined(TARGET_RISCV64)
DEFINE_DYNAMIC_CPU(TYPE_RISCV_CPU_BASE64, MXL_RV64, rv64_base_cpu_init),
DEFINE_VENDOR_CPU(TYPE_RISCV_CPU_SIFIVE_E51, MXL_RV64, rv64_sifive_e_cpu_init),