summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-exynos4/sleep.S
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2011-03-18 03:08:06 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-18 03:08:06 +0100
commit411f5c7a502769ccc0377c5ba36cb0b283847ba8 (patch)
tree2c3a29671e3f923de48c55f94194849264a7bf53 /arch/arm/mach-exynos4/sleep.S
parentMerge branches 'defcfg', 'drivers' and 'cyberpro-next' of master.kernel.org:/... (diff)
parentMerge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene... (diff)
downloadlinux-411f5c7a502769ccc0377c5ba36cb0b283847ba8.tar.xz
linux-411f5c7a502769ccc0377c5ba36cb0b283847ba8.zip
Merge branch 'devel-stable' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel-stable' of master.kernel.org:/home/rmk/linux-2.6-arm: (289 commits) davinci: DM644x EVM: register MUSB device earlier davinci: add spi devices on tnetv107x evm davinci: add ssp config for tnetv107x evm board davinci: add tnetv107x ssp platform device spi: add ti-ssp spi master driver mfd: add driver for sequencer serial port ARM: EXYNOS4: Implement Clock gating for System MMU ARM: EXYNOS4: Enhancement of System MMU driver ARM: EXYNOS4: Add support for gpio interrupts ARM: S5P: Add function to register gpio interrupt bank data ARM: S5P: Cleanup S5P gpio interrupt code ARM: EXYNOS4: Add missing GPYx banks ARM: S3C64XX: Fix section mismatch from cpufreq init ARM: EXYNOS4: Add keypad device to the SMDKV310 ARM: EXYNOS4: Update clocks for keypad ARM: EXYNOS4: Update keypad base address ARM: EXYNOS4: Add keypad device helpers ARM: EXYNOS4: Add support for SATA on ARMLEX4210 plat-nomadik: make GPIO interrupts work with cpuidle ApSleep mach-u300: define a dummy filter function for coh901318 ... Fix up various conflicts in - arch/arm/mach-exynos4/cpufreq.c - arch/arm/mach-mxs/gpio.c - drivers/net/Kconfig - drivers/tty/serial/Kconfig - drivers/tty/serial/Makefile - drivers/usb/gadget/fsl_mxc_udc.c - drivers/video/Kconfig
Diffstat (limited to 'arch/arm/mach-exynos4/sleep.S')
-rw-r--r--arch/arm/mach-exynos4/sleep.S76
1 files changed, 76 insertions, 0 deletions
diff --git a/arch/arm/mach-exynos4/sleep.S b/arch/arm/mach-exynos4/sleep.S
new file mode 100644
index 000000000000..6b62425417a6
--- /dev/null
+++ b/arch/arm/mach-exynos4/sleep.S
@@ -0,0 +1,76 @@
+/* linux/arch/arm/mach-exynos4/sleep.S
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * EXYNOS4210 power Manager (Suspend-To-RAM) support
+ * Based on S3C2410 sleep code by:
+ * Ben Dooks, (c) 2004 Simtec Electronics
+ *
+ * Based on PXA/SA1100 sleep code by:
+ * Nicolas Pitre, (c) 2002 Monta Vista Software Inc
+ * Cliff Brake, (c) 2001
+ *
+ * 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>
+#include <asm/memory.h>
+
+ .text
+
+ /*
+ * s3c_cpu_save
+ *
+ * entry:
+ * r1 = v:p offset
+ */
+
+ENTRY(s3c_cpu_save)
+
+ stmfd sp!, { r3 - r12, lr }
+ ldr r3, =resume_with_mmu
+ bl cpu_suspend
+
+ ldr r0, =pm_cpu_sleep
+ ldr r0, [ r0 ]
+ mov pc, r0
+
+resume_with_mmu:
+ ldmfd sp!, { r3 - r12, pc }
+
+ .ltorg
+
+ /*
+ * 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