diff options
| author | Atish Patra <atish.patra@wdc.com> | 2021-07-10 09:18:05 -0700 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2021-07-11 10:13:04 +0530 |
| commit | 0829f2bc284c07576a0dc9a569beea2a2d68dc3d (patch) | |
| tree | e8356644ff35aad82bcca04a0cce4d6dd91f0e76 /include | |
| parent | d3a96cc46989783c2fbb47e11349dbd5d652938d (diff) | |
lib: sbi: Detect number of bits implemented in mhpmcounter
RISC-V privilege specification allows the implementation to have less
than 64 bits.
Add a function to detect the number of implemented bits in mhpmcounter
dynamically at runtime.
Reviewed-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/sbi/sbi_hart.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sbi/sbi_hart.h b/include/sbi/sbi_hart.h index 9e317c5..0c18ef9 100644 --- a/include/sbi/sbi_hart.h +++ b/include/sbi/sbi_hart.h @@ -44,6 +44,7 @@ void sbi_hart_delegation_dump(struct sbi_scratch *scratch, unsigned int sbi_hart_pmp_count(struct sbi_scratch *scratch); unsigned long sbi_hart_pmp_granularity(struct sbi_scratch *scratch); unsigned int sbi_hart_pmp_addrbits(struct sbi_scratch *scratch); +unsigned int sbi_hart_mhpm_bits(struct sbi_scratch *scratch); int sbi_hart_pmp_configure(struct sbi_scratch *scratch); bool sbi_hart_has_feature(struct sbi_scratch *scratch, unsigned long feature); void sbi_hart_get_features_str(struct sbi_scratch *scratch, |