xref: /openbmc/linux/arch/arm/mach-socfpga/headsmp.S (revision d7a3d85e)
1/*
2 *  Copyright (c) 2003 ARM Limited
3 *  Copyright (c) u-boot contributors
4 *  Copyright (c) 2012 Pavel Machek <pavel@denx.de>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10#include <linux/linkage.h>
11#include <linux/init.h>
12#include <asm/memory.h>
13
14	.arch	armv7-a
15
16ENTRY(secondary_trampoline)
17	/* CPU1 will always fetch from 0x0 when it is brought out of reset.
18	 * Thus, we can just subtract the PAGE_OFFSET to get the physical
19	 * address of &cpu1start_addr. This would not work for platforms
20	 * where the physical memory does not start at 0x0.
21	 */
22	adr	r0, 1f
23	ldmia	r0, {r1, r2}
24	sub	r2, r2, #PAGE_OFFSET
25	ldr	r3, [r2]
26	ldr	r4, [r3]
27	bx	r4
28
29	.align
301:	.long	.
31	.long	socfpga_cpu1start_addr
32ENTRY(secondary_trampoline_end)
33
34ENTRY(socfpga_secondary_startup)
35       bl      v7_invalidate_l1
36       b       secondary_startup
37ENDPROC(socfpga_secondary_startup)
38