diff options
| author | Nicolas Pitre <nico@fluxnic.net> | 2011-02-12 22:25:27 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-02-23 17:24:19 +0000 |
| commit | b11fe38883d1de76f2f847943e085a808f83f189 (patch) | |
| tree | 381973a579e681e69472a4ee8f12e17e227d99ef /arch/arm/boot | |
| parent | 74c25beeb30fa32badf575a908902cbdef4d4eb4 (diff) | |
ARM: 6663/1: make Thumb2 kernel entry point more similar to the ARM one
Some installers would binary patch the kernel zImage to replace the
first few nops with custom instructions. This breaks the Thumb2 kernel
as the mode switch is right at the beginning. Let's move it towards the
end of the nop sequence instead.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/boot')
| -rw-r--r-- | arch/arm/boot/compressed/head.S | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index 7193884ed8b..920f4dbd488 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -128,14 +128,14 @@ wait: mrc p14, 0, pc, c0, c1, 0 .arm @ Always enter in ARM state start: .type start,#function - THUMB( adr r12, BSYM(1f) ) - THUMB( bx r12 ) - THUMB( .rept 6 ) - ARM( .rept 8 ) + .rept 7 mov r0, r0 .endr + ARM( mov r0, r0 ) + ARM( b 1f ) + THUMB( adr r12, BSYM(1f) ) + THUMB( bx r12 ) - b 1f .word 0x016f2818 @ Magic numbers to help the loader .word start @ absolute load/run zImage address .word _edata @ zImage end address |