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target/riscv: Enable RV32 CPU support in RV64 QEMU

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Add gdb XML files and adjust CPU initialization to allow running RV32 CPUs
in RV64 QEMU.

Signed-off-by: TANG Tiancheng <tangtiancheng.ttc@alibaba-inc.com>
Reviewed-by: Liu Zhiwei <zhiwei_liu@linux.alibaba.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20240919055048.562-7-zhiwei_liu@linux.alibaba.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
TANG Tiancheng 2024-09-19 13:50:46 +08:00 committed by Alistair Francis
parent 58597bfeab
commit e087bd4de3
2 changed files with 14 additions and 4 deletions
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2
configs/targets/riscv64-softmmu.mak
View File

@ -2,6 +2,6 @@ TARGET_ARCH=riscv64
TARGET_BASE_ARCH=riscv
TARGET_SUPPORTS_MTTCG=y
TARGET_KVM_HAVE_GUEST_DEBUG=y
TARGET_XML_FILES= gdb-xml/riscv-64bit-cpu.xml gdb-xml/riscv-32bit-fpu.xml gdb-xml/riscv-64bit-fpu.xml gdb-xml/riscv-64bit-virtual.xml
TARGET_XML_FILES= gdb-xml/riscv-64bit-cpu.xml gdb-xml/riscv-32bit-fpu.xml gdb-xml/riscv-64bit-fpu.xml gdb-xml/riscv-64bit-virtual.xml gdb-xml/riscv-32bit-cpu.xml gdb-xml/riscv-32bit-virtual.xml
# needed by boot.c
TARGET_NEED_FDT=y

16
target/riscv/cpu.c
View File

@ -615,7 +615,10 @@ static void rv64e_bare_cpu_init(Object *obj)
riscv_cpu_set_misa_ext(env, RVE);
}
#else /* !TARGET_RISCV64 */
#endif /* !TARGET_RISCV64 */
#if defined(TARGET_RISCV32) || \
(defined(TARGET_RISCV64) && !defined(CONFIG_USER_ONLY))
static void rv32_base_cpu_init(Object *obj)
{
@ -2941,6 +2944,12 @@ static const TypeInfo riscv_cpu_type_infos[] = {
},
#if defined(TARGET_RISCV32)
DEFINE_DYNAMIC_CPU(TYPE_RISCV_CPU_MAX, MXL_RV32, riscv_max_cpu_init),
#elif defined(TARGET_RISCV64)
DEFINE_DYNAMIC_CPU(TYPE_RISCV_CPU_MAX, MXL_RV64, riscv_max_cpu_init),
#endif
#if defined(TARGET_RISCV32) || \
(defined(TARGET_RISCV64) && !defined(CONFIG_USER_ONLY))
DEFINE_DYNAMIC_CPU(TYPE_RISCV_CPU_BASE32, MXL_RV32, rv32_base_cpu_init),
DEFINE_VENDOR_CPU(TYPE_RISCV_CPU_IBEX, MXL_RV32, rv32_ibex_cpu_init),
DEFINE_VENDOR_CPU(TYPE_RISCV_CPU_SIFIVE_E31, MXL_RV32, rv32_sifive_e_cpu_init),
@ -2948,8 +2957,9 @@ static const TypeInfo riscv_cpu_type_infos[] = {
DEFINE_VENDOR_CPU(TYPE_RISCV_CPU_SIFIVE_U34, MXL_RV32, rv32_sifive_u_cpu_init),
DEFINE_BARE_CPU(TYPE_RISCV_CPU_RV32I, MXL_RV32, rv32i_bare_cpu_init),
DEFINE_BARE_CPU(TYPE_RISCV_CPU_RV32E, MXL_RV32, rv32e_bare_cpu_init),
#elif defined(TARGET_RISCV64)
DEFINE_DYNAMIC_CPU(TYPE_RISCV_CPU_MAX, MXL_RV64, 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),
DEFINE_VENDOR_CPU(TYPE_RISCV_CPU_SIFIVE_U54, MXL_RV64, rv64_sifive_u_cpu_init),