1/* 2 * linux/arch/arm/mach-exynos4/headsmp.S 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 16/* 17 * exynos4 specific entry point for secondary CPUs. This provides 18 * a "holding pen" into which all secondary cores are held until we're 19 * ready for them to initialise. 20 */ 21ENTRY(exynos4_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 28pen: 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 37ENDPROC(exynos4_secondary_startup) 38 39 .align 2 401: .long . 41 .long pen_release 42