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riscv: add ISA extension parsing for Ztso

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Add support to parse the Ztso string in the riscv,isa string. The
bindings already supports it but not the ISA parsing code.

Signed-off-by: Clément Léger <cleger@rivosinc.com>
Link: https://lore.kernel.org/r/20231220155723.684081-2-cleger@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This commit is contained in:
Clément Léger 2023-12-20 16:57:17 +01:00 committed by Palmer Dabbelt
parent 9726acfdfa
commit 1ec9f381e8
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2 changed files with 2 additions and 0 deletions
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1
arch/riscv/include/asm/hwcap.h
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@ -84,6 +84,7 @@
#define RISCV_ISA_EXT_ZVFH 69
#define RISCV_ISA_EXT_ZVFHMIN 70
#define RISCV_ISA_EXT_ZFA 71
#define RISCV_ISA_EXT_ZTSO 72
#define RISCV_ISA_EXT_MAX 128
#define RISCV_ISA_EXT_INVALID U32_MAX

1
arch/riscv/kernel/cpufeature.c
View File

@ -279,6 +279,7 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = {
__RISCV_ISA_EXT_DATA(zkt, RISCV_ISA_EXT_ZKT),
__RISCV_ISA_EXT_DATA(zksed, RISCV_ISA_EXT_ZKSED),
__RISCV_ISA_EXT_DATA(zksh, RISCV_ISA_EXT_ZKSH),
__RISCV_ISA_EXT_DATA(ztso, RISCV_ISA_EXT_ZTSO),
__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),