From mboxrd@z Thu Jan 1 00:00:00 1970 From: cw00.choi@samsung.com (Chanwoo Choi) Date: Thu, 10 Apr 2014 18:37:15 +0900 Subject: [PATCH 04/27] ARM: EXYNOS: Support secondary CPU boot of Exynos4212 In-Reply-To: <1397122658-16013-1-git-send-email-cw00.choi@samsung.com> References: <1397122658-16013-1-git-send-email-cw00.choi@samsung.com> Message-ID: <1397122658-16013-5-git-send-email-cw00.choi@samsung.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Kyungmin Park This patch fix the offset of CPU boot address and change parameter of smc call of SMC_CMD_CPU1BOOT command for Exynos4212. Signed-off-by: Kyungmin Park --- arch/arm/mach-exynos/firmware.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c index 932129e..91a911d 100644 --- a/arch/arm/mach-exynos/firmware.c +++ b/arch/arm/mach-exynos/firmware.c @@ -18,6 +18,8 @@ #include +#include + #include "smc.h" static int exynos_do_idle(void) @@ -28,14 +30,22 @@ static int exynos_do_idle(void) static int exynos_cpu_boot(int cpu) { - exynos_smc(SMC_CMD_CPU1BOOT, cpu, 0, 0); + if (soc_is_exynos4212()) + exynos_smc(SMC_CMD_CPU1BOOT, 0, 0, 0); + else + exynos_smc(SMC_CMD_CPU1BOOT, cpu, 0, 0); return 0; } static int exynos_set_cpu_boot_addr(int cpu, unsigned long boot_addr) { - void __iomem *boot_reg = S5P_VA_SYSRAM_NS + 0x1c + 4*cpu; + void __iomem *boot_reg = S5P_VA_SYSRAM_NS + 0x1c; + if (soc_is_exynos4212()) + goto out; + else + boot_reg += 4*cpu; +out: __raw_writel(boot_addr, boot_reg); return 0; } -- 1.8.0