Hi,
On 02.06.2014 14:35, Bartlomiej Zolnierkiewicz wrote:
From: Tomasz Figa t.figa@samsung.com
This change is a preparation for adding secure firmware support to EXYNOS cpuidle driver.
This patch shouldn't cause any functionality changes.
Signed-off-by: Tomasz Figa t.figa@samsung.com [bzolnier: splitted out from bigger patch] Acked-by: Kyungmin Park kyungmin.park@samsung.com Signed-off-by: Bartlomiej Zolnierkiewicz b.zolnierkie@samsung.com
arch/arm/include/asm/firmware.h | 4 ++++ arch/arm/mach-exynos/firmware.c | 8 ++++++++ 2 files changed, 12 insertions(+)
diff --git a/arch/arm/include/asm/firmware.h b/arch/arm/include/asm/firmware.h index c72ec47..70883c7 100644 --- a/arch/arm/include/asm/firmware.h +++ b/arch/arm/include/asm/firmware.h @@ -41,6 +41,10 @@ struct firmware_ops { * Initializes L2 cache */ int (*l2x0_init)(void);
- /*
* Restores coprocessor 15 registers*/- int (*c15resume)(u32 *regs);
Well, this was just a kind of internal hack, so I'm not sure this is suitable as a generic firmware operation in mainline.
I'd rather implement this as a part of a wider suspend and resume firmware operations, where suspend would save values of cp15 registers and resume would restore them.
Best regards, Tomasz