summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-sa1100/sleep.S
diff options
context:
space:
mode:
authorDavid Brown <davidb@codeaurora.org>2011-03-16 22:13:16 -0700
committerDavid Brown <davidb@codeaurora.org>2011-03-16 22:13:16 -0700
commit92c260f755c42337c550d8ac1f8ccd1b32bffb20 (patch)
tree6d04fefc1adeecabfb2b00c201e0db78fa2b5529 /arch/arm/mach-sa1100/sleep.S
parent8e76a80960bf06c245160a484d5a363ca6b520bb (diff)
parent05e34754518b6a90d5c392790c032575fab12d66 (diff)
downloadblackbird-op-linux-92c260f755c42337c550d8ac1f8ccd1b32bffb20.tar.gz
blackbird-op-linux-92c260f755c42337c550d8ac1f8ccd1b32bffb20.zip
Merge remote branch 'rmk/for-linus' into for-linus
* rmk/for-linus: (1557 commits) ARM: 6806/1: irq: introduce entry and exit functions for chained handlers ARM: 6781/1: Thumb-2: Work around buggy Thumb-2 short branch relocations in gas ARM: 6747/1: P2V: Thumb2 support ARM: 6798/1: aout-core: zero thread debug registers in a.out core dump ARM: 6796/1: Footbridge: Fix I/O mappings for NOMMU mode ARM: 6784/1: errata: no automatic Store Buffer drain on Cortex-A9 ARM: 6772/1: errata: possible fault MMU translations following an ASID switch ARM: 6776/1: mach-ux500: activate fix for errata 753970 ARM: 6794/1: SPEAr: Append UL to device address macros. ARM: 6793/1: SPEAr: Remove unused *_SIZE macros from spear*.h files ARM: 6792/1: SPEAr: Replace SIZE macro's with SZ_4K macros ARM: 6791/1: SPEAr3xx: Declare device structures after shirq code ARM: 6790/1: SPEAr: Clock Framework: Rename usbd clock and align apb_clk entry ARM: 6789/1: SPEAr3xx: Rename sdio to sdhci ARM: 6788/1: SPEAr: Include mach/hardware.h instead of mach/spear.h ARM: 6787/1: SPEAr: Reorder #includes in .h & .c files. ARM: 6681/1: SPEAr: add debugfs support to clk API ARM: 6703/1: SPEAr: update clk API support ARM: 6679/1: SPEAr: make clk API functions more generic ARM: 6737/1: SPEAr: formalized timer support ... Conflicts: arch/arm/mach-msm/board-msm7x27.c arch/arm/mach-msm/board-msm7x30.c arch/arm/mach-msm/board-qsd8x50.c arch/arm/mach-msm/board-sapphire.c arch/arm/mach-msm/include/mach/memory.h
Diffstat (limited to 'arch/arm/mach-sa1100/sleep.S')
-rw-r--r--arch/arm/mach-sa1100/sleep.S72
1 files changed, 4 insertions, 68 deletions
diff --git a/arch/arm/mach-sa1100/sleep.S b/arch/arm/mach-sa1100/sleep.S
index 80f31bad707c..04f2a618d4ef 100644
--- a/arch/arm/mach-sa1100/sleep.S
+++ b/arch/arm/mach-sa1100/sleep.S
@@ -20,12 +20,7 @@
#include <asm/assembler.h>
#include <mach/hardware.h>
-
-
.text
-
-
-
/*
* sa1100_cpu_suspend()
*
@@ -34,27 +29,10 @@
*/
ENTRY(sa1100_cpu_suspend)
-
stmfd sp!, {r4 - r12, lr} @ save registers on stack
-
- @ get coprocessor registers
- mrc p15, 0, r4, c3, c0, 0 @ domain ID
- mrc p15, 0, r5, c2, c0, 0 @ translation table base addr
- mrc p15, 0, r6, c13, c0, 0 @ PID
- mrc p15, 0, r7, c1, c0, 0 @ control reg
-
- @ store them plus current virtual stack ptr on stack
- mov r8, sp
- stmfd sp!, {r4 - r8}
-
- @ preserve phys address of stack
- mov r0, sp
- bl sleep_phys_sp
- ldr r1, =sleep_save_sp
- str r0, [r1]
-
- @ clean data cache and invalidate WB
- bl v4wb_flush_kern_cache_all
+ mov r1, r0
+ ldr r3, =sa1100_cpu_resume @ return function
+ bl cpu_suspend
@ disable clock switching
mcr p15, 0, r1, c15, c2, 2
@@ -166,50 +144,8 @@ sa1110_sdram_controller_fix:
* cpu_sa1100_resume()
*
* entry point from bootloader into kernel during resume
- *
- * Note: Yes, part of the following code is located into the .data section.
- * This is to allow sleep_save_sp to be accessed with a relative load
- * while we can't rely on any MMU translation. We could have put
- * sleep_save_sp in the .text section as well, but some setups might
- * insist on it to be truly read-only.
*/
-
- .data
- .align 5
-ENTRY(sa1100_cpu_resume)
- mov r0, #PSR_F_BIT | PSR_I_BIT | SVC_MODE
- msr cpsr_c, r0 @ set SVC, irqs off
-
- ldr r0, sleep_save_sp @ stack phys addr
- ldr r2, =resume_after_mmu @ its absolute virtual address
- ldmfd r0, {r4 - r7, sp} @ CP regs + virt stack ptr
-
- mov r1, #0
- mcr p15, 0, r1, c8, c7, 0 @ flush I+D TLBs
- mcr p15, 0, r1, c7, c7, 0 @ flush I&D cache
- mcr p15, 0, r1, c9, c0, 0 @ invalidate RB
- mcr p15, 0, r1, c9, c0, 5 @ allow user space to use RB
-
- mcr p15, 0, r4, c3, c0, 0 @ domain ID
- mcr p15, 0, r5, c2, c0, 0 @ translation table base addr
- mcr p15, 0, r6, c13, c0, 0 @ PID
- b resume_turn_on_mmu @ cache align execution
-
.align 5
-resume_turn_on_mmu:
- mcr p15, 0, r7, c1, c0, 0 @ turn on MMU, caches, etc.
- nop
- mov pc, r2 @ jump to virtual addr
- nop
- nop
- nop
-
-sleep_save_sp:
- .word 0 @ preserve stack phys ptr here
-
- .text
-resume_after_mmu:
+sa1100_cpu_resume:
mcr p15, 0, r1, c15, c1, 2 @ enable clock switching
ldmfd sp!, {r4 - r12, pc} @ return to caller
-
-
OpenPOWER on IntegriCloud