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Commit 6457158a authored by Chanwoo Choi's avatar Chanwoo Choi Committed by Kukjin Kim
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ARM: EXYNOS: Support secondary CPU boot of Exynos3250 



This patch fix the offset of CPU boot address and don't
need to send smc call of SMC_CMD_CPU1BOOT command for
secondary CPU boot because Exynos3250 removes WFE in
secure mode.

Signed-off-by: default avatarChanwoo Choi <cw00.choi@samsung.com>
Acked-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: default avatarTomasz Figa <t.figa@samsung.com>
Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
parent 940bc58d

arch/arm/mach-exynos/firmware.c

+8 −1
Original line number Diff line number Diff line
@@ -29,6 +29,13 @@ static int exynos_do_idle(void) 


static int exynos_cpu_boot(int cpu)

{

	/*

	 * Exynos3250 doesn't need to send smc command for secondary CPU boot

	 * because Exynos3250 removes WFE in secure mode.

	 */

	if (soc_is_exynos3250())

		return 0;



	/*

	 * The second parameter of SMC_CMD_CPU1BOOT command means CPU id.

	 * But, Exynos4212 has only one secondary CPU so second parameter
@@ -45,7 +52,7 @@ static int exynos_set_cpu_boot_addr(int cpu, unsigned long boot_addr) 
{

	void __iomem *boot_reg = S5P_VA_SYSRAM_NS + 0x1c;



	if (!soc_is_exynos4212())

	if (!soc_is_exynos4212() && !soc_is_exynos3250())

		boot_reg += 4*cpu;



	__raw_writel(boot_addr, boot_reg);