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authorTony Lindgren <tony@atomide.com>2011-04-26 05:37:46 -0700
committerNicolas Pitre <nico@fluxnic.net>2011-05-06 23:56:43 -0400
commit7c2527f0c4bf6bd096f58296597e1373387d69fd (patch)
treea140c9d2864d3949b91a8265f93a0447bafcee71 /arch/arm/boot
parent3bd2cbb95543acf44fe123eb9f038de54e655eb4 (diff)
ARM: zImage: Fix bad SP address after relocating kernel
Otherwise cache_clean_flush can overwrite some of the relocated area depending on where the kernel image gets loaded. This fixes booting on n900 after commit 6d7d0ae51574943bf571d269da3243257a2d15db (ARM: 6750/1: improvements to compressed/head.S). Thanks to Aaro Koskinen <aaro.koskinen@nokia.com> for debugging the address of the relocated area that gets corrupted, and to Nicolas Pitre <nicolas.pitre@linaro.org> for the other uncompress related fixes. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Diffstat (limited to 'arch/arm/boot')
-rw-r--r--arch/arm/boot/compressed/head.S5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
index 84ac4d65631..55a5bcb82ba 100644
--- a/arch/arm/boot/compressed/head.S
+++ b/arch/arm/boot/compressed/head.S
@@ -253,6 +253,11 @@ restart: adr r0, LC0
/* Preserve offset to relocated code. */
sub r6, r9, r6
+#ifndef CONFIG_ZBOOT_ROM
+ /* cache_clean_flush may use the stack, so relocate it */
+ add sp, sp, r6
+#endif
+
bl cache_clean_flush
adr r0, BSYM(restart)