| /* |
| * arch/arm/plat-ambarella/smp/headsmp.S |
| * |
| * Author: Anthony Ginger <hfjiang@ambarella.com> |
| * |
| * Copyright (C) 2004-2010, Ambarella, Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| * |
| */ |
| |
| #include <linux/linkage.h> |
| #include <linux/init.h> |
| |
| __CPUINIT |
| |
| /* |
| * ambarella 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(ambarella_secondary_startup) |
| mrc p15, 0, r0, c0, c0, 5 |
| and r0, r0, #0x00ffffff |
| 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 |
| ENDPROC(ambarella_secondary_startup) |
| |
| .align 2 |
| 1: .long . |
| .long pen_release |
| |
