linux-stable/arch/arm/mach-versatile/headsmp.S
Arnd Bergmann d7445676e8 ARM: versatile: move integrator/realview/vexpress to versatile
These are all fairly small platforms by now, and they are
closely related. Just move them all into a single directory.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Tested-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2022-04-04 10:22:37 +02:00

36 lines
821 B
ArmAsm

/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2003 ARM Limited
* All Rights Reserved
*/
#include <linux/linkage.h>
#include <linux/init.h>
#include <asm/assembler.h>
/*
* Realview/Versatile Express specific entry point for secondary CPUs.
* This provides a "holding pen" into which all secondary cores are held
* until we're ready for them to initialise.
*/
ENTRY(versatile_secondary_startup)
ARM_BE8(setend be)
mrc p15, 0, r0, c0, c0, 5
bic r0, #0xff000000
adr r4, 1f
ldmia r4, {r5, r6}
sub r4, r4, r5
add r6, r6, r4
pen: ldr r7, [r6]
cmp r7, r0
bne pen
/*
* we've been released from the holding pen: secondary_stack
* should now contain the SVC stack for this core
*/
b secondary_startup
.align
1: .long .
.long versatile_cpu_release
ENDPROC(versatile_secondary_startup)