| /* |
| * linux/arch/arm/mach-vexpress/headsmp.S |
| * |
| * Copyright (c) 2003 ARM Limited |
| * All Rights Reserved |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| #include <linux/linkage.h> |
| #include <linux/init.h> |
| |
| __INIT |
| |
| /* |
| * Versatile Express specific entry point for secondary CPUs. This |
| * provides a "holding pen" into which all secondary cores are held |
| * until we're ready for them to initialise. |
| */ |
| ENTRY(vexpress_secondary_startup) |
| mrc p15, 0, r0, c0, c0, 5 |
| and r0, r0, #15 |
| adr r4, 1f |
| ldmia r4, {r5, r6} |
| sub r4, r4, r5 |
| add r6, r6, r4 |
| pen: ldr r7, [r6] |
| cmp r7, r0 |
| bne pen |
| |
| /* |
| * we've been released from the holding pen: secondary_stack |
| * should now contain the SVC stack for this core |
| */ |
| b secondary_startup |
| |
| 1: .long . |
| .long pen_release |
