diff options
Diffstat (limited to 'lib/sbi/riscv_asm.c')
| -rw-r--r-- | lib/sbi/riscv_asm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/sbi/riscv_asm.c b/lib/sbi/riscv_asm.c index 5eab1ed..ddc4c13 100644 --- a/lib/sbi/riscv_asm.c +++ b/lib/sbi/riscv_asm.c @@ -139,6 +139,10 @@ unsigned long csr_read_num(int csr_num) switchcase_csr_read_4(CSR_MHPMCOUNTER4H, ret) switchcase_csr_read_8(CSR_MHPMCOUNTER8H, ret) switchcase_csr_read_16(CSR_MHPMCOUNTER16H, ret) + /** + * The CSR range MHPMEVENT[3-16]H are available only if sscofpmf + * extension is present. The caller must ensure that. + */ switchcase_csr_read(CSR_MHPMEVENT3H, ret) switchcase_csr_read_4(CSR_MHPMEVENT4H, ret) switchcase_csr_read_8(CSR_MHPMEVENT8H, ret) |