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ARM: imx: enable big endian mode

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Enable ARM big-endian mode on mach-imx. This requires adding some
byte swapping in the debug functions (which otherwise hang forever)
and of course the secondary core bringup.

Tested (on top of 4.4) on i.MX6 HummingBoard quad-core (IMX6Q).

The patch is pretty much as suggested by Arnd Bergmann, thanks!

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Johannes Berg
2016-01-27 17:59:36 +01:00
committed by Shawn Guo
parent c553138fbd
commit 26e30c6489
3 changed files with 6 additions and 0 deletions
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2
arch/arm/mach-imx/headsmp.S
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@@ -12,6 +12,7 @@
#include <linux/linkage.h>
#include <linux/init.h>
#include <asm/assembler.h>
diag_reg_offset:
.word g_diag_reg - .
@@ -25,6 +26,7 @@ diag_reg_offset:
.endm
ENTRY(v7_secondary_startup)
ARM_BE8(setend be) @ go BE8 if entered LE
set_diag_reg
b secondary_startup
ENDPROC(v7_secondary_startup)