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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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f0eab3889e
Convert the low level SMP assembly code for SH-Mobile ARM from using the INIT to the CPUINIT section. This unbreaks onlining of CPUs using the CPU hotplug interface: echo 1 > /sys/devices/system/cpu/cpu1/online Without this fix the reset vector code used by CPU hotplug will be freed as init section data and CPU cores cannot be brought online. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
28 lines
746 B
ArmAsm
28 lines
746 B
ArmAsm
/*
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* SMP support for R-Mobile / SH-Mobile
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*
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* Copyright (C) 2010 Magnus Damm
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* Copyright (C) 2010 Takashi Yoshii
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*
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* Based on vexpress, Copyright (c) 2003 ARM Limited, All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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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/memory.h>
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__CPUINIT
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/*
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* Reset vector for secondary CPUs.
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* This will be mapped at address 0 by SBAR register.
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* We need _long_ jump to the physical address.
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*/
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.align 12
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ENTRY(shmobile_secondary_vector)
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ldr pc, 1f
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1: .long secondary_startup - PAGE_OFFSET + PLAT_PHYS_OFFSET
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