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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright 2011 Freescale Semiconductor, Inc.
* Copyright 2011 Linaro Ltd.
*/
#include <linux/linkage.h>
#include <linux/init.h>
#include <asm/assembler.h>
.arch armv7-a
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
mrc p15, 0, r0, c0, c0, 0
lsl r0, r0, #16
lsr r0, r0, #20
/* 0xc07 is cortex A7's ID */
mov r1, #0xc00
orr r1, #0x7
cmp r0, r1
beq secondary_startup
set_diag_reg
b secondary_startup
ENDPROC(v7_secondary_startup)
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