From: Victor Kamensky <victor.kamensky@xxxxxxxxxx> Exynos processors generally operate in little endian mode so their bootloader and ROM will almost always operate in little endian mode. This means that if a big endian kernel is run it must switch the CPU into big endian mode after gaining control. The generic secondary_startup that is called from exynos specific secondary startup code will do the switch, but we need it to do earlier because exynos specific secondary_startup code which runs first also works with data that is big endian when the kernel is compiled for big endian. [Rewrote commit message. -- broonie] Signed-off-by: Victor Kamensky <victor.kamensky@xxxxxxxxxx> Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> --- arch/arm/mach-exynos/headsmp.S | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm/mach-exynos/headsmp.S b/arch/arm/mach-exynos/headsmp.S index b54f9701e421..ac8364efb985 100644 --- a/arch/arm/mach-exynos/headsmp.S +++ b/arch/arm/mach-exynos/headsmp.S @@ -18,6 +18,11 @@ * ready for them to initialise. */ ENTRY(exynos4_secondary_startup) + /* + * ROM code operates in little endian mode, when we get control we + * need to switch it to big endian mode. + */ +ARM_BE8(setend be) mrc p15, 0, r0, c0, c0, 5 and r0, r0, #15 adr r4, 1f -- 2.0.1 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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