On 04/25/2014 06:46 AM, Chanwoo Choi wrote:
> 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: Chanwoo Choi <cw00.c...@samsung.com>
> Acked-by: Kyungmin Park <kyungmin.p...@samsung.com>
> ---
> arch/arm/mach-exynos/firmware.c | 10 ++++++++--
> 1 file changed, 8 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c
> index aa01c42..386d01d 100644
> --- a/arch/arm/mach-exynos/firmware.c
> +++ b/arch/arm/mach-exynos/firmware.c
> @@ -31,11 +31,17 @@ 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
> * isn't used for informing secure firmware about CPU id.
> */
> - if (soc_is_exynos4212())
> + else if (soc_is_exynos4212())
This changes is not required.
> cpu = 0;
>
> exynos_smc(SMC_CMD_CPU1BOOT, cpu, 0, 0);
> @@ -46,7 +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);
>
--
Tushar Behera
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