diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/sbi/sbi_hart.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/sbi/sbi_hart.c b/lib/sbi/sbi_hart.c index e2b93e6..770fee0 100644 --- a/lib/sbi/sbi_hart.c +++ b/lib/sbi/sbi_hart.c @@ -748,6 +748,7 @@ static int hart_detect_features(struct sbi_scratch *scratch) struct sbi_hart_features *hfeatures = sbi_scratch_offset_ptr(scratch, hart_features_offset); unsigned long val, oldval; + bool has_zicntr = false; int rc; /* If hart features already detected then do nothing */ @@ -900,12 +901,19 @@ __pmp_skip: #undef __check_ext_csr + /* Save trap based detection of Zicntr */ + has_zicntr = sbi_hart_has_extension(scratch, SBI_HART_EXT_ZICNTR); + /* Let platform populate extensions */ rc = sbi_platform_extensions_init(sbi_platform_thishart_ptr(), hfeatures); if (rc) return rc; + /* Zicntr should only be detected using traps */ + __sbi_hart_update_extension(hfeatures, SBI_HART_EXT_ZICNTR, + has_zicntr); + /* Extensions implied by other extensions and features */ if (hfeatures->mhpm_mask) __sbi_hart_update_extension(hfeatures, |