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8e026910 ML |
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 | ||
35 | const char *get_system_type(void) | |
36 | { | |
37 | return "XXS1500"; | |
38 | } | |
39 | ||
40 | void __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"); | |
8ca635bf | 52 | if (!memsize_str || kstrtoul(memsize_str, 0, &memsize)) |
8e026910 ML |
53 | memsize = 0x04000000; |
54 | ||
55 | add_memory_region(0, memsize, BOOT_MEM_RAM); | |
56 | } | |
57 | ||
58 | void prom_putchar(unsigned char c) | |
59 | { | |
60 | alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c); | |
61 | } | |
62 | ||
63 | static void xxs1500_reset(char *c) | |
64 | { | |
65 | /* Jump to the reset vector */ | |
66 | __asm__ __volatile__("jr\t%0" : : "r"(0xbfc00000)); | |
67 | } | |
68 | ||
69 | static 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 | ||
78 | void __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) */ | |
1d09de7d | 90 | pin_func = alchemy_rdsys(AU1000_SYS_PINFUNC) & ~SYS_PF_UR3; |
8e026910 | 91 | pin_func |= SYS_PF_UR3; |
1d09de7d | 92 | alchemy_wrsys(pin_func, AU1000_SYS_PINFUNC); |
8e026910 ML |
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 | ||
103 | static 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 | ||
124 | static 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 | ||
131 | static struct platform_device *xxs1500_devs[] __initdata = { | |
132 | &xxs1500_pcmcia_dev, | |
133 | }; | |
134 | ||
135 | static 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 | } | |
154 | device_initcall(xxs1500_dev_init); |