[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20241029-v5_user_cfi_series-v7-26-2727ce9936cb@rivosinc.com>
Date: Tue, 29 Oct 2024 16:44:26 -0700
From: Deepak Gupta <debug@...osinc.com>
To: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
Borislav Petkov <bp@...en8.de>, Dave Hansen <dave.hansen@...ux.intel.com>,
x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
Andrew Morton <akpm@...ux-foundation.org>,
"Liam R. Howlett" <Liam.Howlett@...cle.com>,
Vlastimil Babka <vbabka@...e.cz>,
Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>,
Conor Dooley <conor@...nel.org>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>, Arnd Bergmann <arnd@...db.de>,
Christian Brauner <brauner@...nel.org>,
Peter Zijlstra <peterz@...radead.org>, Oleg Nesterov <oleg@...hat.com>,
Eric Biederman <ebiederm@...ssion.com>, Kees Cook <kees@...nel.org>,
Jonathan Corbet <corbet@....net>, Shuah Khan <shuah@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
linux-mm@...ck.org, linux-riscv@...ts.infradead.org,
devicetree@...r.kernel.org, linux-arch@...r.kernel.org,
linux-doc@...r.kernel.org, linux-kselftest@...r.kernel.org,
alistair.francis@....com, richard.henderson@...aro.org, jim.shu@...ive.com,
andybnac@...il.com, kito.cheng@...ive.com, charlie@...osinc.com,
atishp@...osinc.com, evan@...osinc.com, cleger@...osinc.com,
alexghiti@...osinc.com, samitolvanen@...gle.com, broonie@...nel.org,
rick.p.edgecombe@...el.com
Subject: [PATCH v7 26/32] riscv: Add Firmware Feature SBI extensions
definitions
From: Clément Léger <cleger@...osinc.com>
Add necessary SBI definitions to use the FWFT extension.
Signed-off-by: Clément Léger <cleger@...osinc.com>
---
arch/riscv/include/asm/sbi.h | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h
index 98f631b051db..754e5cdabf46 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 +282,32 @@ 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_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
#define SBI_SPEC_VERSION_MAJOR_SHIFT 24
--
2.34.1
Powered by blists - more mailing lists