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] 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); };
/* Global pointer for current firmware_ops structure, can't be NULL. */ diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c index 932129e..581c7bf 100644 --- a/arch/arm/mach-exynos/firmware.c +++ b/arch/arm/mach-exynos/firmware.c @@ -40,10 +40,18 @@ static int exynos_set_cpu_boot_addr(int cpu, unsigned long boot_addr) return 0; }
+static int exynos_c15resume(u32 *regs) +{ + exynos_smc(SMC_CMD_C15RESUME, regs[0], regs[1], 0); + + return 0; +} + static const struct firmware_ops exynos_firmware_ops = { .do_idle = exynos_do_idle, .set_cpu_boot_addr = exynos_set_cpu_boot_addr, .cpu_boot = exynos_cpu_boot, + .c15resume = exynos_c15resume, };
void __init exynos_firmware_init(void)