linux-kernel - [PATCH v1 4/5] RISC-V: purgatory: Use XLEN-length loads to support rv32

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Message-Id: <20220520154430.18593-5-palmer@rivosinc.com>
Date:   Fri, 20 May 2022 08:44:30 -0700
From:   Palmer Dabbelt <palmer@...osinc.com>
To:     lizhengyu3@...wei.com
Cc:     Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>, aou@...s.berkeley.edu,
        robh+dt@...nel.org, frowand.list@...il.com, zohar@...ux.ibm.com,
        dmitry.kasatkin@...il.com, jmorris@...ei.org, serge@...lyn.com,
        liaochang1@...wei.com, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-integrity@...r.kernel.org,
        linux-security-module@...r.kernel.org, linux@...osinc.com,
        Palmer Dabbelt <palmer@...osinc.com>
Subject: [PATCH v1 4/5] RISC-V: purgatory: Use XLEN-length loads to support rv32

From: Palmer Dabbelt <palmer@...osinc.com>

This uses an explicit "ld" to load up target address, which dosn't work
on rv32.  Convert it to a REG_L macro, like everywhere else.

Signed-off-by: Palmer Dabbelt <palmer@...osinc.com>
---
 arch/riscv/purgatory/entry.S | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/riscv/purgatory/entry.S b/arch/riscv/purgatory/entry.S
index 0194f4554130..71c50fef051c 100644
--- a/arch/riscv/purgatory/entry.S
+++ b/arch/riscv/purgatory/entry.S
@@ -8,6 +8,8 @@
  *
  */
 
+#include <asm/asm.h>
+
 .macro	size, sym:req
 	.size \sym, . - \sym
 .endm
@@ -26,7 +28,7 @@ purgatory_start:
 	/* Start new image. */
 	mv	a0, s0
 	mv	a1, s1
-	ld	a2, riscv_kernel_entry
+	REG_L	a2, riscv_kernel_entry
 	jr	a2
 
 size purgatory_start
@@ -41,7 +43,7 @@ size purgatory_start
 
 .globl riscv_kernel_entry
 riscv_kernel_entry:
-	.quad	0
+	REG_ASM	0
 size riscv_kernel_entry
 
 .end
-- 
2.34.1