Commit | Line | Data |
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2b12b5c4 | 1 | /* |
7d30e8b3 | 2 | * linux/arch/arm/mach-exynos4/headsmp.S |
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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 | ||
152c036a | 16 | __CPUINIT |
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17 | |
18 | /* | |
7d30e8b3 | 19 | * exynos4 specific entry point for secondary CPUs. This provides |
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20 | * a "holding pen" into which all secondary cores are held until we're |
21 | * ready for them to initialise. | |
22 | */ | |
7d30e8b3 | 23 | ENTRY(exynos4_secondary_startup) |
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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 | |
f7597c02 | 39 | ENDPROC(exynos4_secondary_startup) |
2b12b5c4 | 40 | |
f7597c02 | 41 | .align 2 |
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42 | 1: .long . |
43 | .long pen_release |