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riscv: add ISA extension parsing for Zvfh[min]

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Add parsing for Zvfh[min] ISA extension[1] which were ratified in
june 2023 around commit e2ccd0548d6c ("Remove draft warnings from
Zvfh[min]") in riscv-v-spec[2].

Link: https://drive.google.com/file/d/1_Yt60HGAf1r1hx7JnsIptw0sqkBd9BQ8/view [1]
Link: https://github.com/riscv/riscv-v-spec/commits/e2ccd0548d6c [2]
Signed-off-by: Clément Léger <cleger@rivosinc.com>
Reviewed-by: Evan Green <evan@rivosinc.com>
Link: https://lore.kernel.org/r/20231114141256.126749-16-cleger@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This commit is contained in:
Clément Léger 2023-11-14 09:12:51 -05:00 committed by Palmer Dabbelt
parent 892f10c8d6
commit f4961b78c3
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2 changed files with 4 additions and 0 deletions
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2
arch/riscv/include/asm/hwcap.h
View File

@ -81,6 +81,8 @@
#define RISCV_ISA_EXT_ZFH 66
#define RISCV_ISA_EXT_ZFHMIN 67
#define RISCV_ISA_EXT_ZIHINTNTL 68
#define RISCV_ISA_EXT_ZVFH 69
#define RISCV_ISA_EXT_ZVFHMIN 70
#define RISCV_ISA_EXT_MAX 128
#define RISCV_ISA_EXT_INVALID U32_MAX

2
arch/riscv/kernel/cpufeature.c
View File

@ -280,6 +280,8 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = {
__RISCV_ISA_EXT_DATA(zksh, RISCV_ISA_EXT_ZKSH),
__RISCV_ISA_EXT_SUPERSET(zvbb, RISCV_ISA_EXT_ZVBB, riscv_zvbb_exts),
__RISCV_ISA_EXT_DATA(zvbc, RISCV_ISA_EXT_ZVBC),
__RISCV_ISA_EXT_DATA(zvfh, RISCV_ISA_EXT_ZVFH),
__RISCV_ISA_EXT_DATA(zvfhmin, RISCV_ISA_EXT_ZVFHMIN),
__RISCV_ISA_EXT_DATA(zvkb, RISCV_ISA_EXT_ZVKB),
__RISCV_ISA_EXT_DATA(zvkg, RISCV_ISA_EXT_ZVKG),
__RISCV_ISA_EXT_BUNDLE(zvkn, riscv_zvkn_bundled_exts),