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/arch/mips/au1000/db1x00/init.c

https://bitbucket.org/evzijst/gittest
C | 74 lines | 38 code | 8 blank | 28 comment | 1 complexity | b6b37f99861976adb0650d603ad8b539 MD5 | raw file
 1/*
 2 * BRIEF MODULE DESCRIPTION
 3 *	PB1000 board setup
 4 *
 5 * Copyright 2001 MontaVista Software Inc.
 6 * Author: MontaVista Software, Inc.
 7 *         	ppopov@mvista.com or source@mvista.com
 8 *
 9 *  This program is free software; you can redistribute  it and/or modify it
10 *  under  the terms of  the GNU General  Public License as published by the
11 *  Free Software Foundation;  either version 2 of the  License, or (at your
12 *  option) any later version.
13 *
14 *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
15 *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
16 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
17 *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
18 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
20 *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
21 *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
22 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 *  You should have received a copy of the  GNU General Public License along
26 *  with this program; if not, write  to the Free Software Foundation, Inc.,
27 *  675 Mass Ave, Cambridge, MA 02139, USA.
28 */
29
30#include <linux/init.h>
31#include <linux/mm.h>
32#include <linux/sched.h>
33#include <linux/bootmem.h>
34#include <asm/addrspace.h>
35#include <asm/bootinfo.h>
36#include <linux/config.h>
37#include <linux/string.h>
38#include <linux/kernel.h>
39
40int prom_argc;
41char **prom_argv, **prom_envp;
42extern void  __init prom_init_cmdline(void);
43extern char *prom_getenv(char *envname);
44
45const char *get_system_type(void)
46{
47#ifdef CONFIG_MIPS_BOSPORUS
48	return "Alchemy Bosporus Gateway Reference";
49#else
50	return "Alchemy Db1x00";
51#endif
52}
53
54void __init prom_init(void)
55{
56	unsigned char *memsize_str;
57	unsigned long memsize;
58
59	prom_argc = fw_arg0;
60	prom_argv = (char **) fw_arg1;
61	prom_envp = (char **) fw_arg2;
62
63	mips_machgroup = MACH_GROUP_ALCHEMY;
64	mips_machtype = MACH_DB1000;	/* set the platform # */   
65
66	prom_init_cmdline();
67
68	memsize_str = prom_getenv("memsize");
69	if (!memsize_str)
70		memsize = 0x04000000;
71	else
72		memsize = simple_strtol(memsize_str, NULL, 0);
73	add_memory_region(0, memsize, BOOT_MEM_RAM);
74}