diff options
Diffstat (limited to 'lib')
-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 36908b1..e028540 100644 --- a/lib/sbi/sbi_hart.c +++ b/lib/sbi/sbi_hart.c @@ -301,6 +301,9 @@ static inline char *sbi_hart_feature_id2string(unsigned long feature) case SBI_HART_HAS_TIME: fstr = "time"; break; + case SBI_HART_HAS_AIA: + fstr = "aia"; + break; default: break; } @@ -524,6 +527,14 @@ __mhpm_skip: csr_read_allowed(CSR_TIME, (unsigned long)&trap); if (!trap.cause) hfeatures->features |= SBI_HART_HAS_TIME; + + /* Detect if hart has AIA local interrupt CSRs */ + csr_read_allowed(CSR_MTOPI, (unsigned long)&trap); + if (trap.cause) + goto __aia_skip; + hfeatures->features |= SBI_HART_HAS_AIA; +__aia_skip: + return; } int sbi_hart_reinit(struct sbi_scratch *scratch) |