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ARM: SAMSUNG: check processor type before cache restoration in resume 

Only cortex-a9 based samsung platforms have l2x0 cache controller. Hence check
the same before restoring the cache in resume.

This is needed for single kernel image.

Signed-off-by: Inderpal Singh <inderpal.singh@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Inderpal Singh 2013-04-04 16:01:15 +09:00 committed by Kukjin Kim
parent 1fa86dcfea
commit d9cdeb814f
1 changed files with 9 additions and 0 deletions
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9
arch/arm/plat-samsung/s5p-sleep.S
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@ -25,6 +25,9 @@
#include <asm/asm-offsets.h>
#include <asm/hardware/cache-l2x0.h>
#define CPU_MASK 0xff0ffff0
#define CPU_CORTEX_A9 0x410fc090
/*
* The following code is located into the .data section. This is to
* allow l2x0_regs_phys to be accessed with a relative load while we
@ -51,6 +54,12 @@
ENTRY(s3c_cpu_resume)
#ifdef CONFIG_CACHE_L2X0
mrc p15, 0, r0, c0, c0, 0
ldr r1, =CPU_MASK
and r0, r0, r1
ldr r1, =CPU_CORTEX_A9
cmp r0, r1
bne resume_l2on
adr r0, l2x0_regs_phys
ldr r0, [r0]
ldr r1, [r0, #L2X0_R_PHY_BASE]