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a7918f39 AZ |
1 | /* |
2 | * arch/arm/mach-ixp4xx/nslu2-setup.c | |
3 | * | |
4 | * NSLU2 board-setup | |
5 | * | |
6 | * based ixdp425-setup.c: | |
7 | * Copyright (C) 2003-2004 MontaVista Software, Inc. | |
8 | * | |
9 | * Author: Mark Rakes <mrakes at mac.com> | |
e22b04fb | 10 | * Author: Rod Whitby <rod@whitby.id.au> |
a7918f39 AZ |
11 | * Maintainers: http://www.nslu2-linux.org/ |
12 | * | |
13 | * Fixed missing init_time in MACHINE_START kas11 10/22/04 | |
14 | * Changed to conform to new style __init ixdp425 kas11 10/22/04 | |
15 | */ | |
16 | ||
17 | #include <linux/kernel.h> | |
18 | #include <linux/serial.h> | |
19 | #include <linux/serial_8250.h> | |
e22b04fb | 20 | #include <linux/leds.h> |
a7918f39 AZ |
21 | |
22 | #include <asm/mach-types.h> | |
23 | #include <asm/mach/arch.h> | |
24 | #include <asm/mach/flash.h> | |
435c5da0 | 25 | #include <asm/mach/time.h> |
a7918f39 AZ |
26 | |
27 | static struct flash_platform_data nslu2_flash_data = { | |
28 | .map_name = "cfi_probe", | |
29 | .width = 2, | |
30 | }; | |
31 | ||
32 | static struct resource nslu2_flash_resource = { | |
a7918f39 AZ |
33 | .flags = IORESOURCE_MEM, |
34 | }; | |
35 | ||
36 | static struct platform_device nslu2_flash = { | |
37 | .name = "IXP4XX-Flash", | |
38 | .id = 0, | |
39 | .dev.platform_data = &nslu2_flash_data, | |
40 | .num_resources = 1, | |
41 | .resource = &nslu2_flash_resource, | |
42 | }; | |
43 | ||
44 | static struct ixp4xx_i2c_pins nslu2_i2c_gpio_pins = { | |
45 | .sda_pin = NSLU2_SDA_PIN, | |
46 | .scl_pin = NSLU2_SCL_PIN, | |
47 | }; | |
48 | ||
e22b04fb RW |
49 | #ifdef CONFIG_LEDS_IXP4XX |
50 | static struct resource nslu2_led_resources[] = { | |
51 | { | |
52 | .name = "ready", /* green led */ | |
53 | .start = NSLU2_LED_GRN, | |
54 | .end = NSLU2_LED_GRN, | |
55 | .flags = IXP4XX_GPIO_HIGH, | |
56 | }, | |
57 | { | |
58 | .name = "status", /* red led */ | |
59 | .start = NSLU2_LED_RED, | |
60 | .end = NSLU2_LED_RED, | |
61 | .flags = IXP4XX_GPIO_HIGH, | |
62 | }, | |
63 | { | |
64 | .name = "disk-1", | |
65 | .start = NSLU2_LED_DISK1, | |
66 | .end = NSLU2_LED_DISK1, | |
67 | .flags = IXP4XX_GPIO_LOW, | |
68 | }, | |
69 | { | |
70 | .name = "disk-2", | |
71 | .start = NSLU2_LED_DISK2, | |
72 | .end = NSLU2_LED_DISK2, | |
73 | .flags = IXP4XX_GPIO_LOW, | |
74 | }, | |
75 | }; | |
76 | ||
77 | static struct platform_device nslu2_leds = { | |
78 | .name = "IXP4XX-GPIO-LED", | |
79 | .id = -1, | |
80 | .num_resources = ARRAY_SIZE(nslu2_led_resources), | |
81 | .resource = nslu2_led_resources, | |
82 | }; | |
83 | #endif | |
84 | ||
a7918f39 AZ |
85 | static struct platform_device nslu2_i2c_controller = { |
86 | .name = "IXP4XX-I2C", | |
87 | .id = 0, | |
88 | .dev.platform_data = &nslu2_i2c_gpio_pins, | |
89 | .num_resources = 0, | |
90 | }; | |
91 | ||
bc66d449 AZ |
92 | static struct platform_device nslu2_beeper = { |
93 | .name = "ixp4xx-beeper", | |
94 | .id = NSLU2_GPIO_BUZZ, | |
95 | .num_resources = 0, | |
96 | }; | |
97 | ||
a7918f39 AZ |
98 | static struct resource nslu2_uart_resources[] = { |
99 | { | |
100 | .start = IXP4XX_UART1_BASE_PHYS, | |
101 | .end = IXP4XX_UART1_BASE_PHYS + 0x0fff, | |
102 | .flags = IORESOURCE_MEM, | |
103 | }, | |
104 | { | |
105 | .start = IXP4XX_UART2_BASE_PHYS, | |
106 | .end = IXP4XX_UART2_BASE_PHYS + 0x0fff, | |
107 | .flags = IORESOURCE_MEM, | |
108 | } | |
109 | }; | |
110 | ||
111 | static struct plat_serial8250_port nslu2_uart_data[] = { | |
112 | { | |
113 | .mapbase = IXP4XX_UART1_BASE_PHYS, | |
114 | .membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET, | |
115 | .irq = IRQ_IXP4XX_UART1, | |
116 | .flags = UPF_BOOT_AUTOCONF, | |
117 | .iotype = UPIO_MEM, | |
118 | .regshift = 2, | |
119 | .uartclk = IXP4XX_UART_XTAL, | |
120 | }, | |
121 | { | |
122 | .mapbase = IXP4XX_UART2_BASE_PHYS, | |
123 | .membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET, | |
124 | .irq = IRQ_IXP4XX_UART2, | |
125 | .flags = UPF_BOOT_AUTOCONF, | |
126 | .iotype = UPIO_MEM, | |
127 | .regshift = 2, | |
128 | .uartclk = IXP4XX_UART_XTAL, | |
129 | }, | |
130 | { } | |
131 | }; | |
132 | ||
133 | static struct platform_device nslu2_uart = { | |
134 | .name = "serial8250", | |
135 | .id = PLAT8250_DEV_PLATFORM, | |
136 | .dev.platform_data = nslu2_uart_data, | |
137 | .num_resources = 2, | |
138 | .resource = nslu2_uart_resources, | |
139 | }; | |
140 | ||
141 | static struct platform_device *nslu2_devices[] __initdata = { | |
142 | &nslu2_i2c_controller, | |
143 | &nslu2_flash, | |
bc66d449 | 144 | &nslu2_beeper, |
e22b04fb RW |
145 | #ifdef CONFIG_LEDS_IXP4XX |
146 | &nslu2_leds, | |
147 | #endif | |
a7918f39 AZ |
148 | }; |
149 | ||
150 | static void nslu2_power_off(void) | |
151 | { | |
152 | /* This causes the box to drop the power and go dead. */ | |
153 | ||
154 | /* enable the pwr cntl gpio */ | |
155 | gpio_line_config(NSLU2_PO_GPIO, IXP4XX_GPIO_OUT); | |
156 | ||
157 | /* do the deed */ | |
158 | gpio_line_set(NSLU2_PO_GPIO, IXP4XX_GPIO_HIGH); | |
159 | } | |
160 | ||
435c5da0 | 161 | static void __init nslu2_timer_init(void) |
a7918f39 | 162 | { |
435c5da0 MLJ |
163 | /* The xtal on this machine is non-standard. */ |
164 | ixp4xx_timer_freq = NSLU2_FREQ; | |
165 | ||
166 | /* Call standard timer_init function. */ | |
167 | ixp4xx_timer_init(); | |
168 | } | |
84904d0e | 169 | |
435c5da0 MLJ |
170 | static struct sys_timer nslu2_timer = { |
171 | .init = nslu2_timer_init, | |
172 | }; | |
173 | ||
174 | static void __init nslu2_init(void) | |
175 | { | |
a7918f39 AZ |
176 | ixp4xx_sys_init(); |
177 | ||
3dfaf7a6 MM |
178 | nslu2_flash_resource.start = IXP4XX_EXP_BUS_BASE(0); |
179 | nslu2_flash_resource.end = | |
180 | IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1; | |
181 | ||
a7918f39 AZ |
182 | pm_power_off = nslu2_power_off; |
183 | ||
e22b04fb RW |
184 | /* This is only useful on a modified machine, but it is valuable |
185 | * to have it first in order to see debug messages, and so that | |
186 | * it does *not* get removed if platform_add_devices fails! | |
187 | */ | |
188 | (void)platform_device_register(&nslu2_uart); | |
189 | ||
a7918f39 AZ |
190 | platform_add_devices(nslu2_devices, ARRAY_SIZE(nslu2_devices)); |
191 | } | |
192 | ||
193 | MACHINE_START(NSLU2, "Linksys NSLU2") | |
194 | /* Maintainer: www.nslu2-linux.org */ | |
a7918f39 AZ |
195 | .phys_io = IXP4XX_PERIPHERAL_BASE_PHYS, |
196 | .io_pg_offst = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC, | |
197 | .boot_params = 0x00000100, | |
198 | .map_io = ixp4xx_map_io, | |
199 | .init_irq = ixp4xx_init_irq, | |
435c5da0 | 200 | .timer = &nslu2_timer, |
a7918f39 AZ |
201 | .init_machine = nslu2_init, |
202 | MACHINE_END |