forked from Minki/linux
26e30c6489
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>
33 lines
814 B
ArmAsm
33 lines
814 B
ArmAsm
/*
|
|
* Copyright 2011 Freescale Semiconductor, Inc.
|
|
* Copyright 2011 Linaro Ltd.
|
|
*
|
|
* The code contained herein is licensed under the GNU General Public
|
|
* License. You may obtain a copy of the GNU General Public License
|
|
* Version 2 or later at the following locations:
|
|
*
|
|
* http://www.opensource.org/licenses/gpl-license.html
|
|
* http://www.gnu.org/copyleft/gpl.html
|
|
*/
|
|
|
|
#include <linux/linkage.h>
|
|
#include <linux/init.h>
|
|
#include <asm/assembler.h>
|
|
|
|
diag_reg_offset:
|
|
.word g_diag_reg - .
|
|
|
|
.macro set_diag_reg
|
|
adr r0, diag_reg_offset
|
|
ldr r1, [r0]
|
|
add r1, r1, r0 @ r1 = physical &g_diag_reg
|
|
ldr r0, [r1]
|
|
mcr p15, 0, r0, c15, c0, 1 @ write diagnostic register
|
|
.endm
|
|
|
|
ENTRY(v7_secondary_startup)
|
|
ARM_BE8(setend be) @ go BE8 if entered LE
|
|
set_diag_reg
|
|
b secondary_startup
|
|
ENDPROC(v7_secondary_startup)
|