| Srinivas Kandagatla | 65ebcc1 | 2013-06-25 12:15:10 +0100 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/mach-sti/headsmp.S |
| 3 | * |
| 4 | * Copyright (C) 2013 STMicroelectronics (R&D) Limited. |
| 5 | * http://www.st.com |
| 6 | * |
| 7 | * Cloned from linux/arch/arm/mach-vexpress/headsmp.S |
| 8 | * |
| 9 | * Copyright (c) 2003 ARM Limited |
| 10 | * All Rights Reserved |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU General Public License version 2 as |
| 14 | * published by the Free Software Foundation. |
| 15 | */ |
| 16 | #include <linux/linkage.h> |
| 17 | #include <linux/init.h> |
| 18 | |
| Srinivas Kandagatla | 65ebcc1 | 2013-06-25 12:15:10 +0100 | [diff] [blame] | 19 | /* |
| 20 | * ST specific entry point for secondary CPUs. This provides |
| 21 | * a "holding pen" into which all secondary cores are held until we're |
| 22 | * ready for them to initialise. |
| 23 | */ |
| 24 | ENTRY(sti_secondary_startup) |
| 25 | mrc p15, 0, r0, c0, c0, 5 |
| 26 | and r0, r0, #15 |
| 27 | adr r4, 1f |
| 28 | ldmia r4, {r5, r6} |
| 29 | sub r4, r4, r5 |
| 30 | add r6, r6, r4 |
| 31 | pen: ldr r7, [r6] |
| 32 | cmp r7, r0 |
| 33 | bne pen |
| 34 | |
| 35 | /* |
| 36 | * we've been released from the holding pen: secondary_stack |
| 37 | * should now contain the SVC stack for this core |
| 38 | */ |
| 39 | b secondary_startup |
| 40 | |
| 41 | 1: .long . |
| 42 | .long pen_release |