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target/riscv: correct csr_ops[CSR_MSECCFG]

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The CSR register mseccfg is used by multiple extensions: Smepm and Zkr.

Consider this when checking the existence of the register.

Fixes: 77442380ec ("target/riscv: rvk: add CSR support for Zkr")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20231030102105.19501-1-heinrich.schuchardt@canonical.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Heinrich Schuchardt 2023-10-30 12:21:05 +02:00 committed by Alistair Francis
parent 672ec6061f
commit 2f32dcabc2
1 changed files with 5 additions and 2 deletions
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7
target/riscv/csr.c
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@ -528,11 +528,14 @@ static RISCVException pmp(CPURISCVState *env, int csrno)
return RISCV_EXCP_ILLEGAL_INST;
}
static RISCVException smepmp(CPURISCVState *env, int csrno)
static RISCVException have_mseccfg(CPURISCVState *env, int csrno)
{
if (riscv_cpu_cfg(env)->ext_smepmp) {
return RISCV_EXCP_NONE;
}
if (riscv_cpu_cfg(env)->ext_zkr) {
return RISCV_EXCP_NONE;
}
return RISCV_EXCP_ILLEGAL_INST;
}
@ -4766,7 +4769,7 @@ riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = {
[CSR_VSIPH] = { "vsiph", aia_hmode32, NULL, NULL, rmw_vsiph },
/* Physical Memory Protection */
[CSR_MSECCFG] = { "mseccfg", smepmp, read_mseccfg, write_mseccfg,
[CSR_MSECCFG] = { "mseccfg", have_mseccfg, read_mseccfg, write_mseccfg,
.min_priv_ver = PRIV_VERSION_1_11_0 },
[CSR_PMPCFG0] = { "pmpcfg0", pmp, read_pmpcfg, write_pmpcfg },
[CSR_PMPCFG1] = { "pmpcfg1", pmp, read_pmpcfg, write_pmpcfg },