Firmware/opensbi
8
0
Fork 0
forked from Mirrors/opensbi
Code Pull Requests Activity

lib: Emulate AMO instructions when Zaamo is not available

Browse Source 
The AMO instructions are very critical for Linux so allow low-end
RISC-V implementations without Zaamo to boot Linux by emulating AMO
instructions using Zalrsc when OpenSBI is compiled without Zaamo.

Signed-off-by: Chao-ying Fu <cfu@mips.com>
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Link: https://lore.kernel.org/r/20250519121207.976949-1-apatel@ventanamicro.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Chao-ying Fu
2025-05-19 17:42:06 +05:30
committed by Anup Patel
parent 017a161788
commit 8a3071222a
6 changed files with 709 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
include/sbi/sbi_illegal_atomic.h Normal file
View File

@@ -0,0 +1,17 @@
/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2025 MIPS
*
*/
#ifndef __SBI_ILLEGAL_ATOMIC_H__
#define __SBI_ILLEGAL_ATOMIC_H__
#include <sbi/sbi_types.h>
struct sbi_trap_regs;
int sbi_illegal_atomic(ulong insn, struct sbi_trap_regs *regs);
#endif