Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
38 lines
746 B
ArmAsm
38 lines
746 B
ArmAsm
/* 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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