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authorKevin Hilman <khilman@ti.com>2011-06-24 04:16:14 +0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-06-24 12:54:31 +0400
commit14c79bbed7e06135bcbccb2b92c19df7115b4502 (patch)
treecf5d97f5fb988a1f5d5eea9a6cccb7f04d4ac73f /arch/arm/mach-omap2/sleep34xx.S
parent076f2cc449188b7d3d4866730afa3ac7be3e6640 (diff)
downloadlinux-14c79bbed7e06135bcbccb2b92c19df7115b4502.tar.xz
ARM: pm: omap34xx: remove get_*_restore_pointer functions, directly use entry points
Upon return from off-mode, the ROM code jumps to a restore function saved in the scratchpad. Based on SoC revision or errata, this restore entry point is different. Current code uses some helper functions in sleep34xx.S (get_*_restore_pointer) to get the restore function entry point. When returning from off-mode, this code is executed from SDRAM, so there's no reason to use these helper functions when using the SDRAM entry points directly would work just fine. This patch uses ENTRY/ENDPROC to create "real" entry points for these functions, and uses those values directly when writing the scratchpad. Tested all three entry points - restore_es3: 3430/n900 - restore_3630: 3630/Zoom3 - restore: 3530/Overo Suggested-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Jean Pihet <j-pihet@ti.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-omap2/sleep34xx.S')
-rw-r--r--arch/arm/mach-omap2/sleep34xx.S55
1 files changed, 9 insertions, 46 deletions
diff --git a/arch/arm/mach-omap2/sleep34xx.S b/arch/arm/mach-omap2/sleep34xx.S
index 9a1349ea460a..d18f52e46c7c 100644
--- a/arch/arm/mach-omap2/sleep34xx.S
+++ b/arch/arm/mach-omap2/sleep34xx.S
@@ -74,46 +74,6 @@
* API functions
*/
-/*
- * The "get_*restore_pointer" functions are used to provide a
- * physical restore address where the ROM code jumps while waking
- * up from MPU OFF/OSWR state.
- * The restore pointer is stored into the scratchpad.
- */
-
- .text
-/* Function call to get the restore pointer for resume from OFF */
-ENTRY(get_restore_pointer)
- stmfd sp!, {lr} @ save registers on stack
- adr r0, restore
- ldmfd sp!, {pc} @ restore regs and return
-ENDPROC(get_restore_pointer)
- .align
-ENTRY(get_restore_pointer_sz)
- .word . - get_restore_pointer
-
- .text
-/* Function call to get the restore pointer for 3630 resume from OFF */
-ENTRY(get_omap3630_restore_pointer)
- stmfd sp!, {lr} @ save registers on stack
- adr r0, restore_3630
- ldmfd sp!, {pc} @ restore regs and return
-ENDPROC(get_omap3630_restore_pointer)
- .align
-ENTRY(get_omap3630_restore_pointer_sz)
- .word . - get_omap3630_restore_pointer
-
- .text
-/* Function call to get the restore pointer for ES3 to resume from OFF */
-ENTRY(get_es3_restore_pointer)
- stmfd sp!, {lr} @ save registers on stack
- adr r0, restore_es3
- ldmfd sp!, {pc} @ restore regs and return
-ENDPROC(get_es3_restore_pointer)
- .align
-ENTRY(get_es3_restore_pointer_sz)
- .word . - get_es3_restore_pointer
-
.text
/*
* L2 cache needs to be toggled for stable OFF mode functionality on 3630.
@@ -316,12 +276,12 @@ omap3_do_wfi:
* restore_3630: applies to 36xx
* restore: common code for 3xxx
*/
-restore_es3:
+ENTRY(omap3_restore_es3)
ldr r5, pm_prepwstst_core_p
ldr r4, [r5]
and r4, r4, #0x3
cmp r4, #0x0 @ Check if previous power state of CORE is OFF
- bne restore
+ bne omap3_restore
adr r0, es3_sdrc_fix
ldr r1, sram_base
ldr r2, es3_sdrc_fix_sz
@@ -333,22 +293,24 @@ copy_to_sram:
bne copy_to_sram
ldr r1, sram_base
blx r1
- b restore
+ b omap3_restore
+ENDPROC(omap3_restore_es3)
-restore_3630:
+ENTRY(omap3_restore_3630)
ldr r1, pm_prepwstst_core_p
ldr r2, [r1]
and r2, r2, #0x3
cmp r2, #0x0 @ Check if previous power state of CORE is OFF
- bne restore
+ bne omap3_restore
/* Disable RTA before giving control */
ldr r1, control_mem_rta
mov r2, #OMAP36XX_RTA_DISABLE
str r2, [r1]
+ENDPROC(omap3_restore_3630)
/* Fall through to common code for the remaining logic */
-restore:
+ENTRY(omap3_restore)
/*
* Read the pwstctrl register to check the reason for mpu reset.
* This tells us what was lost.
@@ -438,6 +400,7 @@ skipl2reen:
/* Now branch to the common CPU resume function */
b cpu_resume
+ENDPROC(omap3_restore)
.ltorg