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target/riscv: add satp_mode profile support

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'satp_mode' is a requirement for supervisor profiles like RVA22S64.
User-mode/application profiles like RVA22U64 doesn't care.

Add 'satp_mode' to the profile description. If a profile requires it,
set it during cpu_set_profile(). We'll also check it during finalize()
to validate if the running config implements the profile.

Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20231218125334.37184-24-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Daniel Henrique Barboza 2023-12-18 09:53:31 -03:00 committed by Alistair Francis
parent e7acc1cb93
commit 55398025e7
3 changed files with 42 additions and 0 deletions
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1
target/riscv/cpu.c
View file

@ -1542,6 +1542,7 @@ static RISCVCPUProfile RVA22U64 = {
.name = "rva22u64",
.misa_ext = RVI | RVM | RVA | RVF | RVD | RVC | RVU,
.priv_spec = RISCV_PROFILE_ATTR_UNUSED,
.satp_mode = RISCV_PROFILE_ATTR_UNUSED,
.ext_offsets = {
CPU_CFG_OFFSET(ext_zicsr), CPU_CFG_OFFSET(ext_zihintpause),
CPU_CFG_OFFSET(ext_zba), CPU_CFG_OFFSET(ext_zbb),

1
target/riscv/cpu.h
View file

@ -82,6 +82,7 @@ typedef struct riscv_cpu_profile {
bool enabled;
bool user_set;
int priv_spec;
int satp_mode;
const int32_t ext_offsets[];
} RISCVCPUProfile;

40
target/riscv/tcg/tcg-cpu.c
View file

@ -771,6 +771,31 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp)
riscv_cpu_disable_priv_spec_isa_exts(cpu);
}
#ifndef CONFIG_USER_ONLY
static bool riscv_cpu_validate_profile_satp(RISCVCPU *cpu,
RISCVCPUProfile *profile,
bool send_warn)
{
int satp_max = satp_mode_max_from_map(cpu->cfg.satp_mode.supported);
if (profile->satp_mode > satp_max) {
if (send_warn) {
bool is_32bit = riscv_cpu_is_32bit(cpu);
const char *req_satp = satp_mode_str(profile->satp_mode, is_32bit);
const char *cur_satp = satp_mode_str(satp_max, is_32bit);
warn_report("Profile %s requires satp mode %s, "
"but satp mode %s was set", profile->name,
req_satp, cur_satp);
}
return false;
}
return true;
}
#endif
static void riscv_cpu_validate_profile(RISCVCPU *cpu,
RISCVCPUProfile *profile)
{
@ -780,6 +805,13 @@ static void riscv_cpu_validate_profile(RISCVCPU *cpu,
bool profile_impl = true;
int i;
#ifndef CONFIG_USER_ONLY
if (profile->satp_mode != RISCV_PROFILE_ATTR_UNUSED) {
profile_impl = riscv_cpu_validate_profile_satp(cpu, profile,
send_warn);
}
#endif
if (profile->priv_spec != RISCV_PROFILE_ATTR_UNUSED &&
profile->priv_spec != env->priv_ver) {
profile_impl = false;
@ -1084,6 +1116,14 @@ static void cpu_set_profile(Object *obj, Visitor *v, const char *name,
cpu->env.priv_ver = profile->priv_spec;
}
#ifndef CONFIG_USER_ONLY
if (profile->satp_mode != RISCV_PROFILE_ATTR_UNUSED) {
const char *satp_prop = satp_mode_str(profile->satp_mode,
riscv_cpu_is_32bit(cpu));
object_property_set_bool(obj, satp_prop, profile->enabled, NULL);
}
#endif
for (i = 0; misa_bits[i] != 0; i++) {
uint32_t bit = misa_bits[i];