1/*
2 *
3 * BRIEF MODULE DESCRIPTION
4 *	IT8172/QED5231 board setup.
5 *
6 * Copyright 2000 MontaVista Software Inc.
7 * Author: MontaVista Software, Inc.
8 *         	ppopov@mvista.com or source@mvista.com
9 *
10 *  This program is free software; you can redistribute  it and/or modify it
11 *  under  the terms of  the GNU General  Public License as published by the
12 *  Free Software Foundation;  either version 2 of the  License, or (at your
13 *  option) any later version.
14 *
15 *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
16 *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
17 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
18 *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
19 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
21 *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
22 *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
23 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 *  You should have received a copy of the  GNU General Public License along
27 *  with this program; if not, write  to the Free Software Foundation, Inc.,
28 *  675 Mass Ave, Cambridge, MA 02139, USA.
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/string.h>
37#include <linux/kernel.h>
38#include <linux/sched.h>
39#include <asm/it8172/it8172.h>
40#include <asm/it8172/it8172_dbg.h>
41
42int prom_argc;
43char **prom_argv, **prom_envp;
44
45extern char _end;
46extern void  __init prom_init_cmdline(void);
47extern unsigned long __init prom_get_memsize(void);
48extern void __init it8172_init_ram_resource(unsigned long memsize);
49
50#define PFN_UP(x)	(((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
51#define PFN_ALIGN(x)	(((unsigned long)(x) + (PAGE_SIZE - 1)) & PAGE_MASK)
52
53const char *get_system_type(void)
54{
55	return "ITE QED-4N-S01B";
56}
57
58int __init prom_init(int argc, char **argv, char **envp, int *prom_vec)
59{
60	unsigned long mem_size;
61	unsigned long pcicr;
62
63	prom_argc = argc;
64	prom_argv = argv;
65	prom_envp = envp;
66
67	puts("ITE board running...");
68
69	mips_machgroup = MACH_GROUP_ITE;
70	mips_machtype = MACH_QED_4N_S01B;  /* ITE board name/number */
71
72	prom_init_cmdline();
73	mem_size = prom_get_memsize();
74
75	printk("Memory size: %dMB\n", (unsigned)mem_size);
76
77	mem_size <<= 20; /* MB */
78
79	/*
80	 * make the entire physical memory visible to pci bus masters
81	 */
82	IT_READ(IT_MC_PCICR, pcicr);
83	pcicr &= ~0x1f;
84	pcicr |= (mem_size - 1) >> 22;
85	IT_WRITE(IT_MC_PCICR, pcicr);
86
87	it8172_init_ram_resource(mem_size);
88	add_memory_region(0, mem_size, BOOT_MEM_RAM);
89
90	return 0;
91}
92