1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * Copyright (c) 2003 ARM Limited 4 * All Rights Reserved 5 */ 6#include <linux/linkage.h> 7#include <linux/init.h> 8#include <asm/assembler.h> 9 10/* 11 * Realview/Versatile Express specific entry point for secondary CPUs. 12 * This provides a "holding pen" into which all secondary cores are held 13 * until we're ready for them to initialise. 14 */ 15ENTRY(versatile_secondary_startup) 16 ARM_BE8(setend be) 17 mrc p15, 0, r0, c0, c0, 5 18 bic r0, #0xff000000 19 adr r4, 1f 20 ldmia r4, {r5, r6} 21 sub r4, r4, r5 22 add r6, r6, r4 23pen: ldr r7, [r6] 24 cmp r7, r0 25 bne pen 26 27 /* 28 * we've been released from the holding pen: secondary_stack 29 * should now contain the SVC stack for this core 30 */ 31 b secondary_startup 32 33 .align 341: .long . 35 .long versatile_cpu_release 36ENDPROC(versatile_secondary_startup) 37