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| author | Abhilash Kesavan <a.kesavan@samsung.com> | 2011-10-04 20:25:51 +0900 |
|---|---|---|
| committer | Kukjin Kim <kgene.kim@samsung.com> | 2011-10-04 20:25:51 +0900 |
| commit | e2e13621b267f88f69917780e107725d2c0ecad9 (patch) | |
| tree | 0e2a13a08fd4deda46c19d0c8716ba7ffbd301c1 /arch/arm/plat-s5p | |
| parent | 0da3beadcbed2128702831c9fe106ea23e194b3f (diff) | |
| download | linux-e2e13621b267f88f69917780e107725d2c0ecad9.tar.gz | |
ARM: S5P: Make the sleep code common for S5P series SoCs
The sleep code for S5PV210 and EXYNOS4 are identical; moreover S5p64X0 and S5PC100 for which support will be added soon can use the same procedure. Create a common sleep code in the plat-s5p directory so that it can be re-used. Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm/plat-s5p')
| -rw-r--r-- | arch/arm/plat-s5p/Kconfig | 6 | ||||
| -rw-r--r-- | arch/arm/plat-s5p/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/plat-s5p/sleep.S | 49 |
3 files changed, 56 insertions, 0 deletions
diff --git a/arch/arm/plat-s5p/Kconfig b/arch/arm/plat-s5p/Kconfig index 53e674348b31..7b9dadadb0a5 100644 --- a/arch/arm/plat-s5p/Kconfig +++ b/arch/arm/plat-s5p/Kconfig @@ -54,6 +54,12 @@ config S5P_SYSTEM_MMU help Say Y here if you want to enable System MMU +config S5P_SLEEP + bool + help + Internal config node to apply common S5P sleep management code. + Can be selected by S5P and newer SoCs with similar sleep procedure. + config S5P_DEV_FIMC0 bool help diff --git a/arch/arm/plat-s5p/Makefile b/arch/arm/plat-s5p/Makefile index 755d7ac4384a..06401dc37b81 100644 --- a/arch/arm/plat-s5p/Makefile +++ b/arch/arm/plat-s5p/Makefile @@ -21,6 +21,7 @@ obj-$(CONFIG_S5P_EXT_INT) += irq-eint.o obj-$(CONFIG_S5P_GPIO_INT) += irq-gpioint.o obj-$(CONFIG_S5P_SYSTEM_MMU) += sysmmu.o obj-$(CONFIG_S5P_PM) += pm.o irq-pm.o +obj-$(CONFIG_S5P_SLEEP) += sleep.o obj-$(CONFIG_S5P_HRT) += s5p-time.o # devices diff --git a/arch/arm/plat-s5p/sleep.S b/arch/arm/plat-s5p/sleep.S new file mode 100644 index 000000000000..0fd591bfc9fd --- /dev/null +++ b/arch/arm/plat-s5p/sleep.S @@ -0,0 +1,49 @@ +/* linux/arch/arm/plat-s5p/sleep.S + * + * Copyright (c) 2011 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Common S5P Sleep Code + * Based on S3C64XX sleep code by: + * Ben Dooks, (c) 2008 Simtec Electronics + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ + +#include <linux/linkage.h> +#include <asm/assembler.h> + + .text + + /* + * sleep magic, to allow the bootloader to check for an valid + * image to resume to. Must be the first word before the + * s3c_cpu_resume entry. + */ + + .word 0x2bedf00d + + /* + * s3c_cpu_resume + * + * resume code entry for bootloader to call + * + * we must put this code here in the data segment as we have no + * other way of restoring the stack pointer after sleep, and we + * must not write to the code segment (code is read-only) + */ + +ENTRY(s3c_cpu_resume) + b cpu_resume |