Re: [PATCHv4 2/7] ARM: EXYNOS: Support secondary CPU boot of Exynos4212

[Tomasz Figa <tomasz.figa@gmail.com>]

Hi,

On 25.04.2014 03:16, Chanwoo Choi wrote:
> From: Kyungmin Park <kyungmin.park@samsung.com>
>
> 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 <kyungmin.park@samsung.com>
> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
> ---
>   arch/arm/mach-exynos/firmware.c | 15 ++++++++++++++-
>   1 file changed, 14 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c
> index 932129e..aa01c42 100644
> --- a/arch/arm/mach-exynos/firmware.c
> +++ b/arch/arm/mach-exynos/firmware.c
> @@ -18,6 +18,8 @@
>
>   #include <mach/map.h>
>
> +#include <plat/cpu.h>
> +
>   #include "smc.h"
>
>   static int exynos_do_idle(void)
> @@ -28,13 +30,24 @@ static int exynos_do_idle(void)
>
>   static int exynos_cpu_boot(int cpu)
>   {
> +	/*
> +	 * 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())
> +		cpu = 0;
> +
>   	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())
> +		boot_reg += 4*cpu;
>
>   	__raw_writel(boot_addr, boot_reg);
>   	return 0;
>

This patch should be applied independently of Exynos3250 support. 
Kukjin, what do you think?

Anyway,

Reviewed-by: Tomasz Figa <t.figa@samsung.com>

Best regards,
Tomasz