[PATCH RFC 03/11] riscv: Add ISA extension parsing for Sdtrig

Max Hsu
2024-03-29T09:27:51Z

Add ISA extension parsing for Sdtrig as introduced
in riscv-debug-spec [1] Chapter 5

Link: https://github.com/riscv/riscv-debug-spec/releases/download/ar20231208/riscv-debug-stable.pdf [1]
Signed-off-by: Max Hsu <max.hsu@sifive.com>
---
arch/riscv/include/asm/hwcap.h | 1 +
arch/riscv/kernel/cpufeature.c | 1 +
2 files changed, 2 insertions(+)

diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h
index e17d0078a651..9f8d780fce35 100644
--- a/arch/riscv/include/asm/hwcap.h
+++ b/arch/riscv/include/asm/hwcap.h
@@ -81,6 +81,7 @@
#define RISCV_ISA_EXT_ZTSO 72
#define RISCV_ISA_EXT_ZACAS 73
#define RISCV_ISA_EXT_XANDESPMU 74
+#define RISCV_ISA_EXT_SDTRIG 75

#define RISCV_ISA_EXT_XLINUXENVCFG 127

diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
index 3ed2359eae35..080c06b76f53 100644
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
@@ -296,6 +296,7 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = {
__RISCV_ISA_EXT_DATA(zvksh, RISCV_ISA_EXT_ZVKSH),
__RISCV_ISA_EXT_BUNDLE(zvksg, riscv_zvksg_bundled_exts),
__RISCV_ISA_EXT_DATA(zvkt, RISCV_ISA_EXT_ZVKT),
+ __RISCV_ISA_EXT_DATA(sdtrig, RISCV_ISA_EXT_SDTRIG),
__RISCV_ISA_EXT_DATA(smaia, RISCV_ISA_EXT_SMAIA),
__RISCV_ISA_EXT_DATA(smstateen, RISCV_ISA_EXT_SMSTATEEN),
__RISCV_ISA_EXT_DATA(ssaia, RISCV_ISA_EXT_SSAIA),

--
2.43.2