1/*
2 *  linux/arch/arm/plat-versatile/headsmp.S
3 *
4 *  Copyright (c) 2003 ARM Limited
5 *  All Rights Reserved
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11#include <linux/linkage.h>
12#include <linux/init.h>
13#include <asm/assembler.h>
14
15/*
16 * Realview/Versatile Express specific entry point for secondary CPUs.
17 * This provides a "holding pen" into which all secondary cores are held
18 * until we're ready for them to initialise.
19 */
20ENTRY(versatile_secondary_startup)
21 ARM_BE8(setend	be)
22	mrc	p15, 0, r0, c0, c0, 5
23	bic	r0, #0xff000000
24	adr	r4, 1f
25	ldmia	r4, {r5, r6}
26	sub	r4, r4, r5
27	add	r6, r6, r4
28pen:	ldr	r7, [r6]
29	cmp	r7, r0
30	bne	pen
31
32	/*
33	 * we've been released from the holding pen: secondary_stack
34	 * should now contain the SVC stack for this core
35	 */
36	b	secondary_startup
37
38	.align
391:	.long	.
40	.long	pen_release
41ENDPROC(versatile_secondary_startup)
42