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authorLinus Torvalds <torvalds@linux-foundation.org>2010-03-12 16:00:54 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-12 16:00:54 -0800
commitdca1d9f6d7ae428c193f32bd3e9a4ca13176648b (patch)
tree02de8c3503c1c811754423d2fa3f3b4978044f6e /arch/arm/boot/compressed/head.S
parent9ff99339447de403a46be5e3f23d0c794d540b06 (diff)
parent91e013827c0bcbb187ecf02213c5446b6f62d445 (diff)
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (370 commits) ARM: S3C2443: Add set_rate and round_rate calls for armdiv clock ARM: S3C2443: Remove #if 0 for clk_mpll ARM: S3C2443: Update notes on MPLLREF clock ARM: S3C2443: Further clksrc-clk conversions ARM: S3C2443: Change to using plat-samsung clksrc-clk implementation USB: Fix s3c-hsotg build following Samsung platform header moves ARM: S3C64XX: Reintroduce unconditional build of audio device ARM: 5961/1: ux500: fix CLKRST addresses ARM: 5977/1: arm: Enable backtrace printing on oops when PC is corrupted ASoC: Fix S3C64xx IIS driver for Samsung header reorg ARM: S3C2440: Fix plat-s3c24xx move of s3c2440/s3c2442 support [ARM] pxa: fix typo in mxm8x10.h [ARM] pxa/raumfeld: set GPIO drive bits for LED pins [ARM] pxa/zeus: Add support for mcp2515 CAN bus [ARM] pxa/zeus: Add support for onboard max6369 watchdog [ARM] pxa/zeus: Add Eurotech as the manufacturer [ARM] pxa/zeus: Correct the USB host initialisation flags [ARM] pxa/zeus: Allow usage of 8250-compatible UART in uncompress [ARM] pxa: refactor uncompress.h for non-PXA uarts [ARM] mmp2: fix incorrect calling of chip->mask_ack() for 2nd level cascaded IRQs ...
Diffstat (limited to 'arch/arm/boot/compressed/head.S')
-rw-r--r--arch/arm/boot/compressed/head.S50
1 files changed, 23 insertions, 27 deletions
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
index 99b75aa1c2e..535a91daaa5 100644
--- a/arch/arm/boot/compressed/head.S
+++ b/arch/arm/boot/compressed/head.S
@@ -170,8 +170,8 @@ not_angel:
.text
adr r0, LC0
- ARM( ldmia r0, {r1, r2, r3, r4, r5, r6, ip, sp} )
- THUMB( ldmia r0, {r1, r2, r3, r4, r5, r6, ip} )
+ ARM( ldmia r0, {r1, r2, r3, r4, r5, r6, r11, ip, sp})
+ THUMB( ldmia r0, {r1, r2, r3, r4, r5, r6, r11, ip} )
THUMB( ldr sp, [r0, #28] )
subs r0, r0, r1 @ calculate the delta offset
@@ -182,12 +182,13 @@ not_angel:
/*
* We're running at a different address. We need to fix
* up various pointers:
- * r5 - zImage base address
- * r6 - GOT start
+ * r5 - zImage base address (_start)
+ * r6 - size of decompressed image
+ * r11 - GOT start
* ip - GOT end
*/
add r5, r5, r0
- add r6, r6, r0
+ add r11, r11, r0
add ip, ip, r0
#ifndef CONFIG_ZBOOT_ROM
@@ -205,10 +206,10 @@ not_angel:
/*
* Relocate all entries in the GOT table.
*/
-1: ldr r1, [r6, #0] @ relocate entries in the GOT
+1: ldr r1, [r11, #0] @ relocate entries in the GOT
add r1, r1, r0 @ table. This fixes up the
- str r1, [r6], #4 @ C references.
- cmp r6, ip
+ str r1, [r11], #4 @ C references.
+ cmp r11, ip
blo 1b
#else
@@ -216,12 +217,12 @@ not_angel:
* Relocate entries in the GOT table. We only relocate
* the entries that are outside the (relocated) BSS region.
*/
-1: ldr r1, [r6, #0] @ relocate entries in the GOT
+1: ldr r1, [r11, #0] @ relocate entries in the GOT
cmp r1, r2 @ entry < bss_start ||
cmphs r3, r1 @ _end < entry
addlo r1, r1, r0 @ table. This fixes up the
- str r1, [r6], #4 @ C references.
- cmp r6, ip
+ str r1, [r11], #4 @ C references.
+ cmp r11, ip
blo 1b
#endif
@@ -247,6 +248,7 @@ not_relocated: mov r0, #0
* Check to see if we will overwrite ourselves.
* r4 = final kernel address
* r5 = start of this image
+ * r6 = size of decompressed image
* r2 = end of malloc space (and therefore this image)
* We basically want:
* r4 >= r2 -> OK
@@ -254,8 +256,7 @@ not_relocated: mov r0, #0
*/
cmp r4, r2
bhs wont_overwrite
- sub r3, sp, r5 @ > compressed kernel size
- add r0, r4, r3, lsl #2 @ allow for 4x expansion
+ add r0, r4, r6
cmp r0, r5
bls wont_overwrite
@@ -271,7 +272,6 @@ not_relocated: mov r0, #0
* r1-r3 = unused
* r4 = kernel execution address
* r5 = decompressed kernel start
- * r6 = processor ID
* r7 = architecture ID
* r8 = atags pointer
* r9-r12,r14 = corrupted
@@ -312,7 +312,8 @@ LC0: .word LC0 @ r1
.word _end @ r3
.word zreladdr @ r4
.word _start @ r5
- .word _got_start @ r6
+ .word _image_size @ r6
+ .word _got_start @ r11
.word _got_end @ ip
.word user_stack+4096 @ sp
LC1: .word reloc_end - reloc_start
@@ -336,7 +337,6 @@ params: ldr r0, =params_phys
*
* On entry,
* r4 = kernel execution address
- * r6 = processor ID
* r7 = architecture number
* r8 = atags pointer
* r9 = run-time address of "start" (???)
@@ -542,7 +542,6 @@ __common_mmu_cache_on:
* r1-r3 = unused
* r4 = kernel execution address
* r5 = decompressed kernel start
- * r6 = processor ID
* r7 = architecture ID
* r8 = atags pointer
* r9-r12,r14 = corrupted
@@ -581,19 +580,19 @@ call_kernel: bl cache_clean_flush
* r1 = corrupted
* r2 = corrupted
* r3 = block offset
- * r6 = corrupted
+ * r9 = corrupted
* r12 = corrupted
*/
call_cache_fn: adr r12, proc_types
#ifdef CONFIG_CPU_CP15
- mrc p15, 0, r6, c0, c0 @ get processor ID
+ mrc p15, 0, r9, c0, c0 @ get processor ID
#else
- ldr r6, =CONFIG_PROCESSOR_ID
+ ldr r9, =CONFIG_PROCESSOR_ID
#endif
1: ldr r1, [r12, #0] @ get value
ldr r2, [r12, #4] @ get mask
- eor r1, r1, r6 @ (real ^ match)
+ eor r1, r1, r9 @ (real ^ match)
tst r1, r2 @ & mask
ARM( addeq pc, r12, r3 ) @ call cache function
THUMB( addeq r12, r3 )
@@ -778,8 +777,7 @@ proc_types:
* Turn off the Cache and MMU. ARMv3 does not support
* reading the control register, but ARMv4 does.
*
- * On entry, r6 = processor ID
- * On exit, r0, r1, r2, r3, r12 corrupted
+ * On exit, r0, r1, r2, r3, r9, r12 corrupted
* This routine must preserve: r4, r6, r7
*/
.align 5
@@ -852,10 +850,8 @@ __armv3_mmu_cache_off:
/*
* Clean and flush the cache to maintain consistency.
*
- * On entry,
- * r6 = processor ID
* On exit,
- * r1, r2, r3, r11, r12 corrupted
+ * r1, r2, r3, r9, r11, r12 corrupted
* This routine must preserve:
* r0, r4, r5, r6, r7
*/
@@ -967,7 +963,7 @@ __armv4_mmu_cache_flush:
mov r2, #64*1024 @ default: 32K dcache size (*2)
mov r11, #32 @ default: 32 byte line size
mrc p15, 0, r3, c0, c0, 1 @ read cache type
- teq r3, r6 @ cache ID register present?
+ teq r3, r9 @ cache ID register present?
beq no_cache_id
mov r1, r3, lsr #18
and r1, r1, #7