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| author | Himanshu Chauhan <hchauhan@ventanamicro.com> | 2024-01-09 22:30:16 +0530 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2024-01-10 09:43:37 +0530 |
| commit | 40dac6bcfe7e01fb12915e0bbf8d175df06c8170 (patch) | |
| tree | f6a0f7b7335dc166c4cbbbe7d50fc2cdc3091fdc | |
| parent | 24997697aed9856f2a7e6ea73802e4939010660e (diff) | |
| download | opensbi-40dac6bcfe7e01fb12915e0bbf8d175df06c8170.zip opensbi-40dac6bcfe7e01fb12915e0bbf8d175df06c8170.tar.gz opensbi-40dac6bcfe7e01fb12915e0bbf8d175df06c8170.tar.bz2 | |
lib: sbi: Detect support of debug triggers
Detect if debug triggers, sdtrig extension, is supported
by the CPU. The support is detected by access traps and
ISA string parsing.
Signed-off-by: Himanshu Chauhan <hchauhan@ventanamicro.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
| -rw-r--r-- | include/sbi/sbi_hart.h | 2 | ||||
| -rw-r--r-- | lib/sbi/sbi_hart.c | 4 |
2 files changed, 6 insertions, 0 deletions
diff --git a/include/sbi/sbi_hart.h b/include/sbi/sbi_hart.h index 47be251..10dc3df 100644 --- a/include/sbi/sbi_hart.h +++ b/include/sbi/sbi_hart.h @@ -53,6 +53,8 @@ enum sbi_hart_extensions { SBI_HART_EXT_ZICBOM, /** Hart has Svpbmt extension */ SBI_HART_EXT_SVPBMT, + /** Hart has debug trigger extension */ + SBI_HART_EXT_SDTRIG, /** Maximum index of Hart extension */ SBI_HART_EXT_MAX, diff --git a/lib/sbi/sbi_hart.c b/lib/sbi/sbi_hart.c index 770fee0..a0ab0c6 100644 --- a/lib/sbi/sbi_hart.c +++ b/lib/sbi/sbi_hart.c @@ -657,6 +657,7 @@ const struct sbi_hart_ext_data sbi_hart_ext[] = { __SBI_HART_EXT_DATA(zicboz, SBI_HART_EXT_ZICBOZ), __SBI_HART_EXT_DATA(zicbom, SBI_HART_EXT_ZICBOM), __SBI_HART_EXT_DATA(svpbmt, SBI_HART_EXT_SVPBMT), + __SBI_HART_EXT_DATA(sdtrig, SBI_HART_EXT_SDTRIG), }; /** @@ -898,6 +899,9 @@ __pmp_skip: /* Detect if hart supports smcntrpmf */ __check_ext_csr(SBI_HART_PRIV_VER_1_12, CSR_MCYCLECFG, SBI_HART_EXT_SMCNTRPMF); + /* Detect if hart support sdtrig (debug triggers) */ + __check_ext_csr(SBI_HART_PRIV_VER_UNKNOWN, + CSR_TSELECT, SBI_HART_EXT_SDTRIG); #undef __check_ext_csr |