1/*
2 * Ralink SoC common setup
3 *
4 * Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
5 * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published
9 * by the Free Software Foundation.
10 */
11
12#include <linux/kernel.h>
13#include <linux/init.h>
14#include <linux/io.h>
15#include <linux/serial_8250.h>
16
17#include <asm/bootinfo.h>
18#include <asm/addrspace.h>
19
20#include <asm/mach-ralink/common.h>
21#include <asm/mach-ralink/machine.h>
22
23unsigned char ramips_sys_type[RAMIPS_SYS_TYPE_LEN];
24unsigned long (*ramips_get_mem_size)(void);
25
26const char *get_system_type(void)
27{
28	return ramips_sys_type;
29}
30
31static void __init detect_mem_size(void)
32{
33	unsigned long size;
34
35	if (ramips_get_mem_size) {
36		size = ramips_get_mem_size();
37	} else {
38		void *base;
39
40		base = (void *) KSEG1ADDR(detect_mem_size);
41		for (size = ramips_mem_size_min; size < ramips_mem_size_max;
42		     size <<= 1 ) {
43			if (!memcmp(base, base + size, 1024))
44				break;
45		}
46	}
47
48	add_memory_region(ramips_mem_base, size, BOOT_MEM_RAM);
49}
50
51void __init ramips_early_serial_setup(int line, unsigned base, unsigned freq,
52				      unsigned irq)
53{
54	struct uart_port p;
55	int err;
56
57	memset(&p, 0, sizeof(p));
58	p.flags		= UPF_SKIP_TEST | UPF_FIXED_TYPE;
59	p.iotype	= UPIO_AU;
60	p.uartclk	= freq;
61	p.regshift	= 2;
62	p.type		= PORT_16550A;
63
64	p.mapbase	= base;
65	p.membase	= ioremap_nocache(p.mapbase, PAGE_SIZE);
66	p.line		= line;
67	p.irq		= irq;
68
69	err = early_serial_setup(&p);
70	if (err)
71		printk(KERN_ERR "early serial%d registration failed %d\n",
72		       line, err);
73}
74
75void __init plat_mem_setup(void)
76{
77	set_io_port_base(KSEG1);
78
79	detect_mem_size();
80	ramips_soc_setup();
81}
82
83__setup("board=", mips_machtype_setup);
84
85static int __init ramips_machine_setup(void)
86{
87	mips_machine_setup();
88	return 0;
89}
90
91arch_initcall(ramips_machine_setup);
92
93static void __init ramips_generic_init(void)
94{
95}
96
97MIPS_MACHINE(RAMIPS_MACH_GENERIC, "Generic", "Generic Ralink board",
98	     ramips_generic_init);
99