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| author | Kaiwen Xue <kaiwenx@rivosinc.com> | 2023-07-20 14:07:02 -0700 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2023-08-18 14:50:38 +0530 |
| commit | c104c60912a4ed26093f00a9675ad0286e8dcd29 (patch) | |
| tree | 5918274955d1c6df51197abdacf8ce1c4ee978ef /lib/sbi/sbi_hart.c | |
| parent | 94197a8c49751eabe73ff2849fce183ac8ead3fd (diff) | |
| download | opensbi-c104c60912a4ed26093f00a9675ad0286e8dcd29.zip opensbi-c104c60912a4ed26093f00a9675ad0286e8dcd29.tar.gz opensbi-c104c60912a4ed26093f00a9675ad0286e8dcd29.tar.bz2 | |
lib: sbi: Add support for smcntrpmf
This adds the support for ISA extension smcntrpmf. When some inhibit flags
are set by a lower privilege mode for new CSRs added by smcntrpmf, OpenSBI
sets the appropriate values correspondingly.
Signed-off-by: Kaiwen Xue <kaiwenx@andrew.cmu.edu>
Signed-off-by: Kaiwen Xue <kaiwenx@rivosinc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Diffstat (limited to 'lib/sbi/sbi_hart.c')
| -rw-r--r-- | lib/sbi/sbi_hart.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/sbi/sbi_hart.c b/lib/sbi/sbi_hart.c index 252f33d..be795f5 100644 --- a/lib/sbi/sbi_hart.c +++ b/lib/sbi/sbi_hart.c @@ -606,6 +606,9 @@ static inline char *sbi_hart_extension_id2string(int ext) case SBI_HART_EXT_SMEPMP: estr = "smepmp"; break; + case SBI_HART_EXT_SMCNTRPMF: + estr = "smcntrpmf"; + break; default: break; } @@ -872,6 +875,14 @@ __pmp_skip: SBI_HART_EXT_SMSTATEEN, true); } + /* Detect if hart supports smcntrpmf */ + if (hfeatures->priv_version >= SBI_HART_PRIV_VER_1_12) { + csr_read_allowed(CSR_MCYCLECFG, (unsigned long)&trap); + if (!trap.cause) + __sbi_hart_update_extension(hfeatures, + SBI_HART_EXT_SMCNTRPMF, true); + } + /* Let platform populate extensions */ rc = sbi_platform_extensions_init(sbi_platform_thishart_ptr(), hfeatures); |