1/*
2 * BRIEF MODULE DESCRIPTION
3 *	MyCable XXS1500 board support
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
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
21 */
22
23#include <linux/kernel.h>
24#include <linux/init.h>
25#include <linux/interrupt.h>
26#include <linux/platform_device.h>
27#include <linux/gpio.h>
28#include <linux/delay.h>
29#include <linux/pm.h>
30#include <asm/bootinfo.h>
31#include <asm/reboot.h>
32#include <asm/mach-au1x00/au1000.h>
33#include <prom.h>
34
35const char *get_system_type(void)
36{
37	return "XXS1500";
38}
39
40void __init prom_init(void)
41{
42	unsigned char *memsize_str;
43	unsigned long memsize;
44
45	prom_argc = fw_arg0;
46	prom_argv = (char **)fw_arg1;
47	prom_envp = (char **)fw_arg2;
48
49	prom_init_cmdline();
50
51	memsize_str = prom_getenv("memsize");
52	if (!memsize_str || kstrtoul(memsize_str, 0, &memsize))
53		memsize = 0x04000000;
54
55	add_memory_region(0, memsize, BOOT_MEM_RAM);
56}
57
58void prom_putchar(unsigned char c)
59{
60	alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
61}
62
63static void xxs1500_reset(char *c)
64{
65	/* Jump to the reset vector */
66	__asm__ __volatile__("jr\t%0" : : "r"(0xbfc00000));
67}
68
69static void xxs1500_power_off(void)
70{
71	while (1)
72		asm volatile (
73		"	.set	mips32					\n"
74		"	wait						\n"
75		"	.set	mips0					\n");
76}
77
78void __init board_setup(void)
79{
80	u32 pin_func;
81
82	pm_power_off = xxs1500_power_off;
83	_machine_halt = xxs1500_power_off;
84	_machine_restart = xxs1500_reset;
85
86	alchemy_gpio1_input_enable();
87	alchemy_gpio2_enable();
88
89	/* Set multiple use pins (UART3/GPIO) to UART (it's used as UART too) */
90	pin_func  = alchemy_rdsys(AU1000_SYS_PINFUNC) & ~SYS_PF_UR3;
91	pin_func |= SYS_PF_UR3;
92	alchemy_wrsys(pin_func, AU1000_SYS_PINFUNC);
93
94	/* Enable UART */
95	alchemy_uart_enable(AU1000_UART3_PHYS_ADDR);
96	/* Enable DTR (MCR bit 0) = USB power up */
97	__raw_writel(1, (void __iomem *)KSEG1ADDR(AU1000_UART3_PHYS_ADDR + 0x18));
98	wmb();
99}
100
101/******************************************************************************/
102
103static struct resource xxs1500_pcmcia_res[] = {
104	{
105		.name	= "pcmcia-io",
106		.flags	= IORESOURCE_MEM,
107		.start	= AU1000_PCMCIA_IO_PHYS_ADDR,
108		.end	= AU1000_PCMCIA_IO_PHYS_ADDR + 0x000400000 - 1,
109	},
110	{
111		.name	= "pcmcia-attr",
112		.flags	= IORESOURCE_MEM,
113		.start	= AU1000_PCMCIA_ATTR_PHYS_ADDR,
114		.end	= AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1,
115	},
116	{
117		.name	= "pcmcia-mem",
118		.flags	= IORESOURCE_MEM,
119		.start	= AU1000_PCMCIA_MEM_PHYS_ADDR,
120		.end	= AU1000_PCMCIA_MEM_PHYS_ADDR + 0x000400000 - 1,
121	},
122};
123
124static struct platform_device xxs1500_pcmcia_dev = {
125	.name		= "xxs1500_pcmcia",
126	.id		= -1,
127	.num_resources	= ARRAY_SIZE(xxs1500_pcmcia_res),
128	.resource	= xxs1500_pcmcia_res,
129};
130
131static struct platform_device *xxs1500_devs[] __initdata = {
132	&xxs1500_pcmcia_dev,
133};
134
135static int __init xxs1500_dev_init(void)
136{
137	irq_set_irq_type(AU1500_GPIO204_INT, IRQ_TYPE_LEVEL_HIGH);
138	irq_set_irq_type(AU1500_GPIO201_INT, IRQ_TYPE_LEVEL_LOW);
139	irq_set_irq_type(AU1500_GPIO202_INT, IRQ_TYPE_LEVEL_LOW);
140	irq_set_irq_type(AU1500_GPIO203_INT, IRQ_TYPE_LEVEL_LOW);
141	irq_set_irq_type(AU1500_GPIO205_INT, IRQ_TYPE_LEVEL_LOW);
142	irq_set_irq_type(AU1500_GPIO207_INT, IRQ_TYPE_LEVEL_LOW);
143
144	irq_set_irq_type(AU1500_GPIO0_INT, IRQ_TYPE_LEVEL_LOW);
145	irq_set_irq_type(AU1500_GPIO1_INT, IRQ_TYPE_LEVEL_LOW);
146	irq_set_irq_type(AU1500_GPIO2_INT, IRQ_TYPE_LEVEL_LOW);
147	irq_set_irq_type(AU1500_GPIO3_INT, IRQ_TYPE_LEVEL_LOW);
148	irq_set_irq_type(AU1500_GPIO4_INT, IRQ_TYPE_LEVEL_LOW); /* CF irq */
149	irq_set_irq_type(AU1500_GPIO5_INT, IRQ_TYPE_LEVEL_LOW);
150
151	return platform_add_devices(xxs1500_devs,
152				    ARRAY_SIZE(xxs1500_devs));
153}
154device_initcall(xxs1500_dev_init);
155