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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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4
include/sbi/sbi_hart.h
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@@ -69,6 +69,10 @@ enum sbi_hart_extensions {
SBI_HART_EXT_SVADU,
/** Hart has Smnpm extension */
SBI_HART_EXT_SMNPM,
/** HART has zicfilp extension */
SBI_HART_EXT_ZICFILP,
/** HART has zicfiss extension */
SBI_HART_EXT_ZICFISS,
/** Maximum index of Hart extension */
SBI_HART_EXT_MAX,