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From: Raymond Mao <raymondmaoca@gmail.com>
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: [PATCH 1/7] hart: add WorldGuard CSR IDs and hart extension flags
Date: Tue, 19 May 2026 16:33:25 -0400	[thread overview]
Message-ID: <20260519203331.2773185-2-raymondmaoca@gmail.com> (raw)
In-Reply-To: <20260519203331.2773185-1-raymondmaoca@gmail.com>

From: Raymond Mao <raymond.mao@riscstar.com>

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 <raymond.mao@riscstar.com>
---
 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


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  reply	other threads:[~2026-05-19 20:33 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-19 20:33 [PATCH 0/7] Add WorldGuard hwiso support Raymond Mao
2026-05-19 20:33 ` Raymond Mao [this message]
2026-05-19 20:33 ` [PATCH 2/7] docs: document hwiso WorldGuard DT bindings Raymond Mao
2026-05-19 20:33 ` [PATCH 3/7] [NOT-FOR-UPSTREAM] platform: virt: add QEMU WorldGuard hwiso overlay Raymond Mao
2026-05-19 20:33 ` [PATCH 4/7] platform: generic: add WorldGuard hwiso support with wgchecker2 Raymond Mao
2026-05-19 20:33 ` [PATCH 5/7] test: add generic hwiso SBI unit coverage Raymond Mao
2026-05-19 20:33 ` [PATCH 6/7] platform: virt: add QEMU virt WorldGuard hwiso tests Raymond Mao
2026-05-19 20:33 ` [PATCH 7/7] platform: virt: add WorldGuard HWISO failure-mode SBIUNIT test Raymond Mao

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