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Commit dc1b9448 authored by Bartlomiej Zolnierkiewicz's avatar Bartlomiej Zolnierkiewicz Committed by Kukjin Kim
Browse files

ARM: EXYNOS: add code for setting/clearing boot flag 



This code is needed for cpuidle (W-)AFTR mode support on Exynos3250.

Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Acked-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
Tested-by: default avatarChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: default avatarKukjin Kim <kgene@kernel.org>
parent 497ab3b3

arch/arm/mach-exynos/common.h

+6 −0
Original line number Diff line number Diff line
@@ -126,6 +126,12 @@ enum { 


void exynos_firmware_init(void);



/* CPU BOOT mode flag for Exynos3250 SoC bootloader */

#define C2_STATE	(1 << 3)



void exynos_set_boot_flag(unsigned int cpu, unsigned int mode);

void exynos_clear_boot_flag(unsigned int cpu, unsigned int mode);



extern u32 exynos_get_eint_wake_mask(void);



#ifdef CONFIG_PM_SLEEP

arch/arm/mach-exynos/firmware.c

+25 −0
Original line number Diff line number Diff line
@@ -206,3 +206,28 @@ void __init exynos_firmware_init(void) 
		outer_cache.configure = exynos_l2_configure;

	}

}



#define REG_CPU_STATE_ADDR	(sysram_ns_base_addr + 0x28)

#define BOOT_MODE_MASK		0x1f



void exynos_set_boot_flag(unsigned int cpu, unsigned int mode)

{

	unsigned int tmp;



	tmp = __raw_readl(REG_CPU_STATE_ADDR + cpu * 4);



	if (mode & BOOT_MODE_MASK)

		tmp &= ~BOOT_MODE_MASK;



	tmp |= mode;

	__raw_writel(tmp, REG_CPU_STATE_ADDR + cpu * 4);

}



void exynos_clear_boot_flag(unsigned int cpu, unsigned int mode)

{

	unsigned int tmp;



	tmp = __raw_readl(REG_CPU_STATE_ADDR + cpu * 4);

	tmp &= ~mode;

	__raw_writel(tmp, REG_CPU_STATE_ADDR + cpu * 4);

}