cns3xxx: add linux 3.8 support and use it by default
[openwrt/svn-archive/archive.git] / target / linux / cns3xxx / files / arch / arm / mach-cns3xxx / headsmp.S
1 /*
2 * linux/arch/arm/mach-cns3xxx/headsmp.S
3 *
4 * Cloned from linux/arch/arm/plat-versatile/headsmp.S
5 *
6 * Copyright (c) 2003 ARM Limited
7 * All Rights Reserved
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13 #include <linux/linkage.h>
14 #include <linux/init.h>
15
16 __CPUINIT
17
18 /*
19 * CNS3XXX specific entry point for secondary CPUs. This provides
20 * a "holding pen" into which all secondary cores are held until we're
21 * ready for them to initialise.
22 */
23 ENTRY(cns3xxx_secondary_startup)
24 mrc p15, 0, r0, c0, c0, 5
25 and r0, r0, #15
26 adr r4, 1f
27 ldmia r4, {r5, r6}
28 sub r4, r4, r5
29 add r6, r6, r4
30 pen: ldr r7, [r6]
31 cmp r7, r0
32 bne pen
33
34 /*
35 * we've been released from the holding pen: secondary_stack
36 * should now contain the SVC stack for this core
37 */
38 b secondary_startup
39
40 .align
41 1: .long .
42 .long pen_release