xref: /rk3399_rockchip-uboot/examples/api/crt0.S (revision d4abc757c26c531293f5bbc4262ade44a317eec9)
1*d4abc757SPeter Tyser/*
2*d4abc757SPeter Tyser * (C) Copyright 2007 Semihalf
3*d4abc757SPeter Tyser *
4*d4abc757SPeter Tyser * Written by: Rafal Jaworowski <raj@semihalf.com>
5*d4abc757SPeter Tyser *
6*d4abc757SPeter Tyser * See file CREDITS for list of people who contributed to this
7*d4abc757SPeter Tyser * project.
8*d4abc757SPeter Tyser *
9*d4abc757SPeter Tyser * This program is free software; you can redistribute it and/or
10*d4abc757SPeter Tyser * modify it under the terms of the GNU General Public License as
11*d4abc757SPeter Tyser * published by the Free Software Foundation; either version 2 of
12*d4abc757SPeter Tyser * the License, or (at your option) any later version.
13*d4abc757SPeter Tyser *
14*d4abc757SPeter Tyser * This program is distributed in the hope that it will be useful,
15*d4abc757SPeter Tyser * but WITHOUT ANY WARRANTY; without even the implied warranty of
16*d4abc757SPeter Tyser * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17*d4abc757SPeter Tyser * GNU General Public License for more details.
18*d4abc757SPeter Tyser *
19*d4abc757SPeter Tyser * You should have received a copy of the GNU General Public License
20*d4abc757SPeter Tyser * along with this program; if not, write to the Free Software
21*d4abc757SPeter Tyser * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
22*d4abc757SPeter Tyser * MA 02111-1307 USA
23*d4abc757SPeter Tyser *
24*d4abc757SPeter Tyser */
25*d4abc757SPeter Tyser
26*d4abc757SPeter Tyser#if defined(CONFIG_PPC)
27*d4abc757SPeter Tyser
28*d4abc757SPeter Tyser	.text
29*d4abc757SPeter Tyser	.globl _start
30*d4abc757SPeter Tyser_start:
31*d4abc757SPeter Tyser	lis	%r11, search_hint@ha
32*d4abc757SPeter Tyser	addi	%r11, %r11, search_hint@l
33*d4abc757SPeter Tyser	stw	%r1, 0(%r11)
34*d4abc757SPeter Tyser	b	main
35*d4abc757SPeter Tyser
36*d4abc757SPeter Tyser
37*d4abc757SPeter Tyser	.globl syscall
38*d4abc757SPeter Tysersyscall:
39*d4abc757SPeter Tyser	lis	%r11, syscall_ptr@ha
40*d4abc757SPeter Tyser	addi	%r11, %r11, syscall_ptr@l
41*d4abc757SPeter Tyser	lwz	%r11, 0(%r11)
42*d4abc757SPeter Tyser	mtctr	%r11
43*d4abc757SPeter Tyser	bctr
44*d4abc757SPeter Tyser
45*d4abc757SPeter Tyser#elif defined(CONFIG_ARM)
46*d4abc757SPeter Tyser
47*d4abc757SPeter Tyser	.text
48*d4abc757SPeter Tyser	.globl _start
49*d4abc757SPeter Tyser_start:
50*d4abc757SPeter Tyser	ldr	ip, =search_hint
51*d4abc757SPeter Tyser	str	sp, [ip]
52*d4abc757SPeter Tyser	b	main
53*d4abc757SPeter Tyser
54*d4abc757SPeter Tyser
55*d4abc757SPeter Tyser	.globl syscall
56*d4abc757SPeter Tysersyscall:
57*d4abc757SPeter Tyser	ldr	ip, =syscall_ptr
58*d4abc757SPeter Tyser	ldr	pc, [ip]
59*d4abc757SPeter Tyser
60*d4abc757SPeter Tyser#else
61*d4abc757SPeter Tyser#error No support for this arch!
62*d4abc757SPeter Tyser#endif
63*d4abc757SPeter Tyser
64*d4abc757SPeter Tyser	.globl syscall_ptr
65*d4abc757SPeter Tysersyscall_ptr:
66*d4abc757SPeter Tyser	.align	4
67*d4abc757SPeter Tyser	.long	0
68*d4abc757SPeter Tyser
69*d4abc757SPeter Tyser	.globl search_hint
70*d4abc757SPeter Tysersearch_hint:
71*d4abc757SPeter Tyser	.long   0
72