upload tizen1.0 source
[kernel/linux-2.6.36.git] / arch / arm / mach-s5pv310 / headsmp.S
1 /*
2  *  linux/arch/arm/mach-s5pv310/headsmp.S
3  *
4  *  Cloned from linux/arch/arm/mach-realview/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 #include <asm/assembler.h>
17 #include <asm/memory.h>
18
19         __CPUINIT
20
21 /*
22  * s5pv310 specific entry point for secondary CPUs.  This provides
23  * a "holding pen" into which all secondary cores are held until we're
24  * ready for them to initialise.
25  */
26 ENTRY(s5pv310_secondary_startup)
27         mrc     p15, 0, r0, c0, c0, 5
28         and     r0, r0, #15
29         adr     r4, 1f
30         ldmia   r4, {r5, r6}
31         sub     r4, r4, r5
32         add     r6, r6, r4
33 pen:    ldr     r7, [r6]
34         cmp     r7, r0
35         bne     pen
36
37         /*
38          * we've been released from the holding pen: secondary_stack
39          * should now contain the SVC stack for this core
40          */
41         b       secondary_startup
42
43 1:      .long   .
44         .long   pen_release