iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ARM: EXYNOS: Support secondary CPU boot of Exynos3250

Browse Source 
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.choi@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Chanwoo Choi 2014-05-26 04:12:32 +09:00 committed by Kukjin Kim
parent 940bc58de5
commit 6457158acc
1 changed files with 8 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
arch/arm/mach-exynos/firmware.c
View File

@ -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);