On Mon, Mar 10, 2025 at 11:42 PM Deepak Gupta <debug@xxxxxxxxxxxx> wrote: > > From: Clément Léger <cleger@xxxxxxxxxxxx> > > Add necessary SBI definitions to use the FWFT extension. > > Signed-off-by: Clément Léger <cleger@xxxxxxxxxxxx> > --- > arch/riscv/include/asm/sbi.h | 26 ++++++++++++++++++++++++++ > 1 file changed, 26 insertions(+) > > diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h > index 3d250824178b..23bfb254e3f4 100644 > --- a/arch/riscv/include/asm/sbi.h > +++ b/arch/riscv/include/asm/sbi.h > @@ -35,6 +35,7 @@ enum sbi_ext_id { > SBI_EXT_DBCN = 0x4442434E, > SBI_EXT_STA = 0x535441, > SBI_EXT_NACL = 0x4E41434C, > + SBI_EXT_FWFT = 0x46574654, > > /* Experimentals extensions must lie within this range */ > SBI_EXT_EXPERIMENTAL_START = 0x08000000, > @@ -401,6 +402,31 @@ enum sbi_ext_nacl_feature { > > #define SBI_NACL_SHMEM_SRET_X(__i) ((__riscv_xlen / 8) * (__i)) > #define SBI_NACL_SHMEM_SRET_X_LAST 31 > +/* SBI function IDs for FW feature extension */ > +#define SBI_EXT_FWFT_SET 0x0 > +#define SBI_EXT_FWFT_GET 0x1 > + > +enum sbi_fwft_feature_t { > + SBI_FWFT_MISALIGNED_EXC_DELEG = 0x0, > + SBI_FWFT_LANDING_PAD = 0x1, > + SBI_FWFT_SHADOW_STACK = 0x2, > + SBI_FWFT_DOUBLE_TRAP = 0x3, > + SBI_FWFT_PTE_AD_HW_UPDATING = 0x4, > + SBI_FWFT_LOCAL_RESERVED_START = 0x5, > + SBI_FWFT_LOCAL_RESERVED_END = 0x3fffffff, > + SBI_FWFT_LOCAL_PLATFORM_START = 0x40000000, > + SBI_FWFT_LOCAL_PLATFORM_END = 0x7fffffff, > + > + SBI_FWFT_GLOBAL_RESERVED_START = 0x80000000, > + SBI_FWFT_GLOBAL_RESERVED_END = 0xbfffffff, > + SBI_FWFT_GLOBAL_PLATFORM_START = 0xc0000000, > + SBI_FWFT_GLOBAL_PLATFORM_END = 0xffffffff, > +}; > + > +#define SBI_FWFT_GLOBAL_FEATURE_BIT (1 << 31) > +#define SBI_FWFT_PLATFORM_FEATURE_BIT (1 << 30) > + > +#define SBI_FWFT_SET_FLAG_LOCK (1 << 0) > > /* SBI spec version fields */ > #define SBI_SPEC_VERSION_DEFAULT 0x1 > LGTM. Reviewed-by: Zong Li <zong.li@xxxxxxxxxx> > -- > 2.34.1 > > > _______________________________________________ > linux-riscv mailing list > linux-riscv@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/linux-riscv