[PATCH v4 06/11] lib: sbi: Add SiFive proprietary xsfcease

From: Nick Hu <nick.hu@sifive.com>
To: opensbi@lists.infradead.org
Cc: vincent.chen@sifive.com, anup@brainfault.org,
	Nick Hu <nick.hu@sifive.com>
Subject: [PATCH v4 06/11] lib: sbi: Add SiFive proprietary xsfcease
Date: Wed, 20 Aug 2025 11:32:45 +0800	[thread overview]
Message-ID: <20250820033250.544-7-nick.hu@sifive.com> (raw)
In-Reply-To: <20250820033250.544-1-nick.hu@sifive.com>

Using ISA string "xsfcease" to detect the support of the custom
instruction "CEASE".

Signed-off-by: Nick Hu <nick.hu@sifive.com>
Reviewed-by: Cyan Yang <cyan.yang@sifive.com>
---
 include/sbi/sbi_hart.h | 2 ++
 lib/sbi/sbi_hart.c     | 1 +
 2 files changed, 3 insertions(+)

diff --git a/include/sbi/sbi_hart.h b/include/sbi/sbi_hart.h
index fdcf400a..ff682fb4 100644
--- a/include/sbi/sbi_hart.h
+++ b/include/sbi/sbi_hart.h
@@ -83,6 +83,8 @@ enum sbi_hart_extensions {
 	SBI_HART_EXT_SSSTATEEN,
 	/** Hart has Xsfcflushdlone extension */
 	SBI_HART_EXT_XSIFIVE_CFLUSH_D_L1,
+	/** Hart has Xsfcease extension */
+	SBI_HART_EXT_XSIFIVE_CEASE,
 
 	/** Maximum index of Hart extension */
 	SBI_HART_EXT_MAX,
diff --git a/lib/sbi/sbi_hart.c b/lib/sbi/sbi_hart.c
index 4160ad6c..2519f3f0 100644
--- a/lib/sbi/sbi_hart.c
+++ b/lib/sbi/sbi_hart.c
@@ -716,6 +716,7 @@ const struct sbi_hart_ext_data sbi_hart_ext[] = {
 	__SBI_HART_EXT_DATA(ssctr, SBI_HART_EXT_SSCTR),
 	__SBI_HART_EXT_DATA(ssstateen, SBI_HART_EXT_SSSTATEEN),
 	__SBI_HART_EXT_DATA(xsfcflushdlone, SBI_HART_EXT_XSIFIVE_CFLUSH_D_L1),
+	__SBI_HART_EXT_DATA(xsfcease, SBI_HART_EXT_XSIFIVE_CEASE),
 };
 
 _Static_assert(SBI_HART_EXT_MAX == array_size(sbi_hart_ext),
-- 
2.17.1


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