forked from Mirrors/opensbi
lib: sbi: Detect AIA CSRs at boot-time
We extend HART feature detection to discover AIA CSRs at boot-time. Signed-off-by: Anup Patel <anup.patel@wdc.com> Signed-off-by: Anup Patel <apatel@ventanamicro.com> Reviewed-by: Atish Patra <atishp@rivosinc.com>
This commit is contained in:
@@ -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)
|
||||
|
Reference in New Issue
Block a user