projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 2b12b5c4 | 1 | /* |
| 7d30e8b3 | 2 | * linux/arch/arm/mach-exynos4/headsmp.S |
| 2b12b5c4 CY |
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 |
| 2b12b5c4 CY |
17 | |
| 18 | /* | |
| 7d30e8b3 | 19 | * exynos4 specific entry point for secondary CPUs. This provides |
| 2b12b5c4 CY |
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) |
| 2b12b5c4 CY |
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 | 1: .long . | |
| 41 | .long pen_release |