1/*
2 * Secondary CPU startup routine source file.
3 *
4 * Copyright (C) 2009 Texas Instruments, Inc.
5 *
6 * Author:
7 *      Santosh Shilimkar <santosh.shilimkar@ti.com>
8 *
9 * Interface functions needed for the SMP. This file is based on arm
10 * realview smp platform.
11 * Copyright (c) 2003 ARM Limited.
12 *
13 * This program is free software,you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License version 2 as
15 * published by the Free Software Foundation.
16 */
17
18#include <linux/linkage.h>
19#include <linux/init.h>
20
21	__CPUINIT
22/*
23 * OMAP4 specific entry point for secondary CPU to jump from ROM
24 * code.  This routine also provides a holding flag into which
25 * secondary core is held until we're ready for it to initialise.
26 * The primary core will update this flag using a hardware
27 * register AuxCoreBoot0.
28 */
29ENTRY(omap_secondary_startup)
30hold:	ldr	r12,=0x103
31	dsb
32	smc	#0			@ read from AuxCoreBoot0
33	mov	r0, r0, lsr #9
34	mrc	p15, 0, r4, c0, c0, 5
35	and	r4, r4, #0x0f
36	cmp	r0, r4
37	bne	hold
38
39	/*
40	 * we've been released from the wait loop,secondary_stack
41	 * should now contain the SVC stack for this core
42	 */
43	b	secondary_startup
44ENDPROC(omap_secondary_startup)
45
46