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