1/* 2 * 3 * Cloned from linux/arch/arm/mach-realview/headsmp.S 4 * 5 * Copyright (c) 2003 ARM Limited 6 * All Rights Reserved 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12#include <linux/linkage.h> 13#include <linux/init.h> 14 15#include <asm/assembler.h> 16 17/* 18 * exynos4 specific entry point for secondary CPUs. This provides 19 * a "holding pen" into which all secondary cores are held until we're 20 * ready for them to initialise. 21 */ 22ENTRY(exynos4_secondary_startup) 23ARM_BE8(setend be) 24 mrc p15, 0, r0, c0, c0, 5 25 and r0, r0, #15 26 adr r4, 1f 27 ldmia r4, {r5, r6} 28 sub r4, r4, r5 29 add r6, r6, r4 30pen: ldr r7, [r6] 31 cmp r7, r0 32 bne pen 33 34 /* 35 * we've been released from the holding pen: secondary_stack 36 * should now contain the SVC stack for this core 37 */ 38 b secondary_startup 39ENDPROC(exynos4_secondary_startup) 40 41 .align 2 421: .long . 43 .long pen_release 44