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lib: sbi: add zicfilp/zicfiss and elp cfi state reflect back in status

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This patch adds support to check for zicfilp / zicfiss extension.

zicfilp record status of hart's ELP state in *status csr. Missing landing
pad sets MPELP in mstatus. When SBI is redirecting back to S/VS/HS, SPELP
is set in sstatus/vsstatus.

Signed-off-by: Deepak Gupta <debug@rivosinc.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
This commit is contained in:
Deepak Gupta
2024-09-16 11:23:55 -07:00
committed by Anup Patel
parent 6758a756c4
commit c0804ed49a
3 changed files with 26 additions and 0 deletions
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lib/sbi/sbi_hart.c
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@@ -681,6 +681,8 @@ const struct sbi_hart_ext_data sbi_hart_ext[] = {
__SBI_HART_EXT_DATA(svade, SBI_HART_EXT_SVADE),
__SBI_HART_EXT_DATA(svadu, SBI_HART_EXT_SVADU),
__SBI_HART_EXT_DATA(smnpm, SBI_HART_EXT_SMNPM),
__SBI_HART_EXT_DATA(zicfilp, SBI_HART_EXT_ZICFILP),
__SBI_HART_EXT_DATA(zicfiss, SBI_HART_EXT_ZICFISS),
};
_Static_assert(SBI_HART_EXT_MAX == array_size(sbi_hart_ext),