/arch/mips/alchemy/xxs1500/init.c

 1/*
 2 * BRIEF MODULE DESCRIPTION
 3 *	XXS1500 board setup
 4 *
 5 * Copyright 2003, 2008 MontaVista Software Inc.
 6 * Author: MontaVista Software, Inc. <source@mvista.com>
 7 *
 8 *  This program is free software; you can redistribute  it and/or modify it
 9 *  under  the terms of  the GNU General  Public License as published by the
10 *  Free Software Foundation;  either version 2 of the  License, or (at your
11 *  option) any later version.
12 *
13 *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
14 *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
15 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
16 *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
17 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
19 *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
21 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 *
24 *  You should have received a copy of the  GNU General Public License along
25 *  with this program; if not, write  to the Free Software Foundation, Inc.,
26 *  675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
29#include <linux/init.h>
30#include <linux/kernel.h>
31
32#include <asm/bootinfo.h>
33#include <asm/mach-au1x00/au1000.h>
34
35#include <prom.h>
36
37const char *get_system_type(void)
38{
39	return "XXS1500";
40}
41
42void __init prom_init(void)
43{
44	unsigned char *memsize_str;
45	unsigned long memsize;
46
47	prom_argc = fw_arg0;
48	prom_argv = (char **)fw_arg1;
49	prom_envp = (char **)fw_arg2;
50
51	prom_init_cmdline();
52
53	memsize_str = prom_getenv("memsize");
54	if (!memsize_str)
55		memsize = 0x04000000;
56	else
57		strict_strtoul(memsize_str, 0, &memsize);
58	add_memory_region(0, memsize, BOOT_MEM_RAM);
59}
60
61void prom_putchar(unsigned char c)
62{
63	alchemy_uart_putchar(UART0_PHYS_ADDR, c);
64}