projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 59ac59f6 RK |
1 | /* |
| 2 | * linux/arch/arm/mach-vexpress/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 | ||
| 14 | __INIT | |
| 15 | ||
| 16 | /* | |
| 17 | * Versatile Express specific entry point for secondary CPUs. This | |
| 18 | * provides a "holding pen" into which all secondary cores are held | |
| 19 | * until we're ready for them to initialise. | |
| 20 | */ | |
| 21 | ENTRY(vexpress_secondary_startup) | |
| 22 | mrc p15, 0, r0, c0, c0, 5 | |
| 23 | and r0, r0, #15 | |
| 24 | adr r4, 1f | |
| 25 | ldmia r4, {r5, r6} | |
| 26 | sub r4, r4, r5 | |
| 27 | add r6, r6, r4 | |
| 28 | pen: 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 | ||
| 618d9c8f | 38 | .align |
| 59ac59f6 RK |
39 | 1: .long . |
| 40 | .long pen_release |