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ARM: bugs: prepare processor bug infrastructure

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Prepare the processor bug infrastructure so that it can be expanded to
check for per-processor bugs.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Boot-tested-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Tony Lindgren <tony@atomide.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Russell King
2018-05-10 12:55:58 +01:00
parent f5683e76f3
commit a5b9177f69
3 changed files with 12 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
arch/arm/include/asm/bugs.h
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@@ -10,10 +10,10 @@
#ifndef __ASM_BUGS_H #ifndef __ASM_BUGS_H
#define __ASM_BUGS_H #define __ASM_BUGS_H
#ifdef CONFIG_MMU
extern void check_writebuffer_bugs(void); extern void check_writebuffer_bugs(void);
#define check_bugs() check_writebuffer_bugs() #ifdef CONFIG_MMU
extern void check_bugs(void);
#else #else
#define check_bugs() do { } while (0) #define check_bugs() do { } while (0)
#endif #endif

1
arch/arm/kernel/Makefile
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@@ -31,6 +31,7 @@ else
obj-y += entry-armv.o obj-y += entry-armv.o
endif endif
obj-$(CONFIG_MMU) += bugs.o
obj-$(CONFIG_CPU_IDLE) += cpuidle.o obj-$(CONFIG_CPU_IDLE) += cpuidle.o
obj-$(CONFIG_ISA_DMA_API) += dma.o obj-$(CONFIG_ISA_DMA_API) += dma.o
obj-$(CONFIG_FIQ) += fiq.o fiqasm.o obj-$(CONFIG_FIQ) += fiq.o fiqasm.o

9
arch/arm/kernel/bugs.c Normal file
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@@ -0,0 +1,9 @@
// SPDX-Identifier: GPL-2.0
#include <linux/init.h>
#include <asm/bugs.h>
#include <asm/proc-fns.h>
void __init check_bugs(void)
{
check_writebuffer_bugs();
}