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Fri, 14 Mar 2025 14:40:22 -0700 (PDT) Received: from debug.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-225c68a6e09sm33368855ad.55.2025.03.14.14.40.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 14 Mar 2025 14:40:22 -0700 (PDT) From: Deepak Gupta Date: Fri, 14 Mar 2025 14:39:40 -0700 Subject: [PATCH v12 21/28] riscv: Add Firmware Feature SBI extensions definitions MIME-Version: 1.0 Message-Id: <20250314-v5_user_cfi_series-v12-21-e51202b53138@rivosinc.com> References: <20250314-v5_user_cfi_series-v12-0-e51202b53138@rivosinc.com> In-Reply-To: <20250314-v5_user_cfi_series-v12-0-e51202b53138@rivosinc.com> To: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Andrew Morton , "Liam R. Howlett" , Vlastimil Babka , Lorenzo Stoakes , Paul Walmsley , Palmer Dabbelt , Albert Ou , Conor Dooley , Rob Herring , Krzysztof Kozlowski , Arnd Bergmann , Christian Brauner , Peter Zijlstra , Oleg Nesterov , Eric Biederman , Kees Cook , Jonathan Corbet , Shuah Khan , Jann Horn , Conor Dooley Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-riscv@lists.infradead.org, devicetree@vger.kernel.org, linux-arch@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, alistair.francis@wdc.com, richard.henderson@linaro.org, jim.shu@sifive.com, andybnac@gmail.com, kito.cheng@sifive.com, charlie@rivosinc.com, atishp@rivosinc.com, evan@rivosinc.com, cleger@rivosinc.com, alexghiti@rivosinc.com, samitolvanen@google.com, broonie@kernel.org, rick.p.edgecombe@intel.com, Zong Li X-Mailer: b4 0.14.0 X-Rspamd-Server: rspam07 X-Rspam-User: X-Stat-Signature: xwhdn8i59paej4bn3gu45gj3otmjd6gj X-Rspamd-Queue-Id: AD6BFC0009 X-HE-Tag: 1741988423-196964 X-HE-Meta: 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 SyVLEg5I 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Clément Léger Add necessary SBI definitions to use the FWFT extension. Signed-off-by: Clément Léger Reviewed-by: Zong Li --- 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