38 lines
746 B
ArmAsm
38 lines
746 B
ArmAsm
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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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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#include <linux/linkage.h>
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#include <linux/init.h>
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#include <asm/assembler.h>
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.arch armv7-a
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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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mrc p15, 0, r0, c0, c0, 0
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lsl r0, r0, #16
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lsr r0, r0, #20
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/* 0xc07 is cortex A7's ID */
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mov r1, #0xc00
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orr r1, #0x7
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cmp r0, r1
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beq secondary_startup
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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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