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[172.97.209.197]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-8b53c1dceddsm29696886d6.30.2026.05.01.11.34.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 May 2026 11:34:07 -0700 (PDT) From: Raymond Mao To: opensbi@lists.infradead.org Cc: scott@riscstar.com, dave.patel@riscstar.com, raymond.mao@riscstar.com, robin.randhawa@sifive.com, samuel.holland@sifive.com, anup.patel@qti.qualcomm.com, anuppate@qti.qualcomm.com, anup@brainfault.org, dhaval@rivosinc.com, peter.lin@sifive.com Subject: [RFC PATCH 1/3] hart: add WorldGuard CSR IDs and hart extension flags Date: Fri, 1 May 2026 14:33:44 -0400 Message-Id: <20260501183346.1596027-2-raymondmaoca@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20260501183346.1596027-1-raymondmaoca@gmail.com> References: <20260501183346.1596027-1-raymondmaoca@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260501_113409_455633_63A507DB X-CRM114-Status: UNSURE ( 9.41 ) X-CRM114-Notice: Please train this message. X-BeenThere: opensbi@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "opensbi" Errors-To: opensbi-bounces+opensbi=archiver.kernel.org@lists.infradead.org From: Raymond Mao Define the WorldGuard-related CSR numbers and claim smwg / sswg hart extensions so platform code can probe support before programming MLWID, MWIDDELEG and SLWID. Signed-off-by: Raymond Mao --- include/sbi/riscv_encoding.h | 3 +++ include/sbi/sbi_hart.h | 4 ++++ lib/sbi/sbi_hart.c | 2 ++ 3 files changed, 9 insertions(+) diff --git a/include/sbi/riscv_encoding.h b/include/sbi/riscv_encoding.h index 46bbeed0..48304132 100644 --- a/include/sbi/riscv_encoding.h +++ b/include/sbi/riscv_encoding.h @@ -331,6 +331,7 @@ /* Supervisor Protection and Translation */ #define CSR_SATP 0x180 +#define CSR_SLWID 0x190 /* Supervisor Indirect Register Alias */ #define CSR_SISELECT 0x150 @@ -454,6 +455,7 @@ /* Machine Configuration */ #define CSR_MENVCFG 0x30a #define CSR_MENVCFGH 0x31a +#define CSR_MLWID 0x390 /* Machine Trap Handling */ #define CSR_MSCRATCH 0x340 @@ -680,6 +682,7 @@ /* Machine Security Configuration CSR (mseccfg) */ #define CSR_MSECCFG 0x747 #define CSR_MSECCFGH 0x757 +#define CSR_MWIDDELEG 0x748 #define MSECCFG_MML_SHIFT (0) #define MSECCFG_MML (_UL(1) << MSECCFG_MML_SHIFT) diff --git a/include/sbi/sbi_hart.h b/include/sbi/sbi_hart.h index cc78eec6..2c725ae2 100644 --- a/include/sbi/sbi_hart.h +++ b/include/sbi/sbi_hart.h @@ -63,6 +63,10 @@ enum sbi_hart_extensions { SBI_HART_EXT_SSCSRIND, /** Hart has Ssccfg extension */ SBI_HART_EXT_SSCCFG, + /** Hart has Smwg extension */ + SBI_HART_EXT_SMWG, + /** Hart has Sswg extension */ + SBI_HART_EXT_SSWG, /** Maximum index of Hart extension */ SBI_HART_EXT_MAX, diff --git a/lib/sbi/sbi_hart.c b/lib/sbi/sbi_hart.c index 3d136944..6fc03a59 100644 --- a/lib/sbi/sbi_hart.c +++ b/lib/sbi/sbi_hart.c @@ -666,6 +666,8 @@ const struct sbi_hart_ext_data sbi_hart_ext[] = { __SBI_HART_EXT_DATA(sdtrig, SBI_HART_EXT_SDTRIG), __SBI_HART_EXT_DATA(smcsrind, SBI_HART_EXT_SMCSRIND), __SBI_HART_EXT_DATA(smcdeleg, SBI_HART_EXT_SMCDELEG), + __SBI_HART_EXT_DATA(smwg, SBI_HART_EXT_SMWG), + __SBI_HART_EXT_DATA(sswg, SBI_HART_EXT_SSWG), }; /** -- 2.25.1 -- opensbi mailing list opensbi@lists.infradead.org http://lists.infradead.org/mailman/listinfo/opensbi