diff mbox series

[v2,8/9] riscv: Add SBI Firmware Features extension definitions

Message ID 20241022015913.3524425-9-samuel.holland@sifive.com (mailing list archive)
State New
Headers show
Series [v2,1/9] kasan: sw_tags: Use arithmetic shift for shadow computation | expand

Checks

Context Check Description
conchuod/vmtest-for-next-PR success PR summary
conchuod/patch-8-test-1 success .github/scripts/patches/tests/build_rv32_defconfig.sh took 107.96s
conchuod/patch-8-test-2 success .github/scripts/patches/tests/build_rv64_clang_allmodconfig.sh took 1003.61s
conchuod/patch-8-test-3 success .github/scripts/patches/tests/build_rv64_gcc_allmodconfig.sh took 1177.03s
conchuod/patch-8-test-4 success .github/scripts/patches/tests/build_rv64_nommu_k210_defconfig.sh took 16.09s
conchuod/patch-8-test-5 success .github/scripts/patches/tests/build_rv64_nommu_virt_defconfig.sh took 17.81s
conchuod/patch-8-test-6 warning .github/scripts/patches/tests/checkpatch.sh took 0.38s
conchuod/patch-8-test-7 success .github/scripts/patches/tests/dtb_warn_rv64.sh took 35.14s
conchuod/patch-8-test-8 success .github/scripts/patches/tests/header_inline.sh took 0.00s
conchuod/patch-8-test-9 success .github/scripts/patches/tests/kdoc.sh took 0.49s
conchuod/patch-8-test-10 success .github/scripts/patches/tests/module_param.sh took 0.01s
conchuod/patch-8-test-11 success .github/scripts/patches/tests/verify_fixes.sh took 0.00s
conchuod/patch-8-test-12 success .github/scripts/patches/tests/verify_signedoff.sh took 0.03s

Commit Message

Samuel Holland Oct. 22, 2024, 1:57 a.m. UTC
From: Clément Léger <cleger@rivosinc.com>

Add necessary SBI definitions to use the FWFT extension.

[Samuel: Add SBI_FWFT_POINTER_MASKING_PMLEN]

Signed-off-by: Clément Léger <cleger@rivosinc.com>
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
---

Changes in v2:
 - New patch for v2

 arch/riscv/include/asm/sbi.h | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
diff mbox series

Patch

diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h
index 98f631b051db..4a35c6ffe49f 100644
--- a/arch/riscv/include/asm/sbi.h
+++ b/arch/riscv/include/asm/sbi.h
@@ -34,6 +34,7 @@  enum sbi_ext_id {
 	SBI_EXT_PMU = 0x504D55,
 	SBI_EXT_DBCN = 0x4442434E,
 	SBI_EXT_STA = 0x535441,
+	SBI_EXT_FWFT = 0x46574654,
 
 	/* Experimentals extensions must lie within this range */
 	SBI_EXT_EXPERIMENTAL_START = 0x08000000,
@@ -281,6 +282,33 @@  struct sbi_sta_struct {
 
 #define SBI_SHMEM_DISABLE		-1
 
+/* 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_POINTER_MASKING_PMLEN		= 0x5,
+	SBI_FWFT_LOCAL_RESERVED_START		= 0x6,
+	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
 #define SBI_SPEC_VERSION_MAJOR_SHIFT	24