xref: /openbmc/u-boot/examples/api/crt0.S (revision bfc93fb4)
1/*
2 * (C) Copyright 2007 Semihalf
3 *
4 * Written by: Rafal Jaworowski <raj@semihalf.com>
5 *
6 * See file CREDITS for list of people who contributed to this
7 * project.
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
22 * MA 02111-1307 USA
23 *
24 */
25
26#if defined(CONFIG_PPC)
27
28	.text
29	.globl _start
30_start:
31	lis	%r11, search_hint@ha
32	addi	%r11, %r11, search_hint@l
33	stw	%r1, 0(%r11)
34	b	main
35
36
37	.globl syscall
38syscall:
39	lis	%r11, syscall_ptr@ha
40	addi	%r11, %r11, syscall_ptr@l
41	lwz	%r11, 0(%r11)
42	mtctr	%r11
43	bctr
44
45#elif defined(CONFIG_ARM)
46
47	.text
48	.globl _start
49_start:
50	ldr	ip, =search_hint
51	str	sp, [ip]
52	b	main
53
54
55	.globl syscall
56syscall:
57	ldr	ip, =syscall_ptr
58	ldr	pc, [ip]
59
60#else
61#error No support for this arch!
62#endif
63
64	.globl syscall_ptr
65syscall_ptr:
66	.align	4
67	.long	0
68
69	.globl search_hint
70search_hint:
71	.long   0
72