diff options
| author | Hou Weiying <weiying_hou@outlook.com> | 2021-04-19 16:16:53 +1000 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2021-05-11 20:02:06 +1000 |
| commit | 2582a95c3c46d2e9d7fbe4a6ff01cfe6b4875339 (patch) | |
| tree | 116598a3991aec6c0afd3f3c2cc0b8177ab86450 /target/riscv/csr.c | |
| parent | 4a345b2a8399b8618e319be375719e9d4d6975d3 (diff) | |
target/riscv: Add ePMP CSR access functions
Signed-off-by: Hongzheng-Li <Ethan.Lee.QNL@gmail.com>
Signed-off-by: Hou Weiying <weiying_hou@outlook.com>
Signed-off-by: Myriad-Dreamin <camiyoru@gmail.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Message-id: 270762cb2507fba6a9eeb99a774cf49f7da9cc32.1618812899.git.alistair.francis@wdc.com
[ Changes by AF:
- Rebase on master
- Fix build errors
- Fix some style issues
]
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'target/riscv/csr.c')
| -rw-r--r-- | target/riscv/csr.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/target/riscv/csr.c b/target/riscv/csr.c index f0a74f0eb8..97ceff718f 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -200,6 +200,15 @@ static RISCVException pmp(CPURISCVState *env, int csrno) return RISCV_EXCP_ILLEGAL_INST; } + +static RISCVException epmp(CPURISCVState *env, int csrno) +{ + if (env->priv == PRV_M && riscv_feature(env, RISCV_FEATURE_EPMP)) { + return RISCV_EXCP_NONE; + } + + return RISCV_EXCP_ILLEGAL_INST; +} #endif /* User Floating-Point CSRs */ @@ -1343,6 +1352,20 @@ static RISCVException write_mtinst(CPURISCVState *env, int csrno, } /* Physical Memory Protection */ +static RISCVException read_mseccfg(CPURISCVState *env, int csrno, + target_ulong *val) +{ + *val = mseccfg_csr_read(env); + return RISCV_EXCP_NONE; +} + +static RISCVException write_mseccfg(CPURISCVState *env, int csrno, + target_ulong val) +{ + mseccfg_csr_write(env, val); + return RISCV_EXCP_NONE; +} + static RISCVException read_pmpcfg(CPURISCVState *env, int csrno, target_ulong *val) { @@ -1581,6 +1604,7 @@ riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = { [CSR_MTINST] = { "mtinst", hmode, read_mtinst, write_mtinst }, /* Physical Memory Protection */ + [CSR_MSECCFG] = { "mseccfg", epmp, read_mseccfg, write_mseccfg }, [CSR_PMPCFG0] = { "pmpcfg0", pmp, read_pmpcfg, write_pmpcfg }, [CSR_PMPCFG1] = { "pmpcfg1", pmp, read_pmpcfg, write_pmpcfg }, [CSR_PMPCFG2] = { "pmpcfg2", pmp, read_pmpcfg, write_pmpcfg }, |