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0c92e830 LB |
1 | /* |
2 | * arch/arm/mach-iop32x/glantank.c | |
3 | * | |
4 | * Board support code for the GLAN Tank. | |
5 | * | |
6 | * Copyright (C) 2006 Martin Michlmayr <tbm@cyrius.com> | |
7 | * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify it | |
10 | * under the terms of the GNU General Public License as published by the | |
11 | * Free Software Foundation; either version 2 of the License, or (at your | |
12 | * option) any later version. | |
13 | */ | |
14 | ||
15 | #include <linux/mm.h> | |
16 | #include <linux/init.h> | |
17 | #include <linux/kernel.h> | |
18 | #include <linux/pci.h> | |
19 | #include <linux/string.h> | |
20 | #include <linux/slab.h> | |
21 | #include <linux/serial_core.h> | |
22 | #include <linux/serial_8250.h> | |
23 | #include <linux/mtd/physmap.h> | |
24 | #include <linux/platform_device.h> | |
25 | #include <asm/hardware.h> | |
26 | #include <asm/io.h> | |
27 | #include <asm/irq.h> | |
28 | #include <asm/mach/arch.h> | |
29 | #include <asm/mach/map.h> | |
30 | #include <asm/mach/pci.h> | |
31 | #include <asm/mach/time.h> | |
32 | #include <asm/mach-types.h> | |
33 | #include <asm/page.h> | |
34 | ||
35 | /* | |
36 | * GLAN Tank timer tick configuration. | |
37 | */ | |
38 | static void __init glantank_timer_init(void) | |
39 | { | |
40 | /* 33.333 MHz crystal. */ | |
41 | iop3xx_init_time(200000000); | |
42 | } | |
43 | ||
44 | static struct sys_timer glantank_timer = { | |
45 | .init = glantank_timer_init, | |
46 | .offset = iop3xx_gettimeoffset, | |
47 | }; | |
48 | ||
49 | ||
50 | /* | |
51 | * GLAN Tank I/O. | |
52 | */ | |
53 | static struct map_desc glantank_io_desc[] __initdata = { | |
54 | { /* on-board devices */ | |
55 | .virtual = GLANTANK_UART, | |
56 | .pfn = __phys_to_pfn(GLANTANK_UART), | |
57 | .length = 0x00100000, | |
58 | .type = MT_DEVICE | |
59 | }, | |
60 | }; | |
61 | ||
62 | void __init glantank_map_io(void) | |
63 | { | |
64 | iop3xx_map_io(); | |
65 | iotable_init(glantank_io_desc, ARRAY_SIZE(glantank_io_desc)); | |
66 | } | |
67 | ||
68 | ||
69 | /* | |
70 | * GLAN Tank PCI. | |
71 | */ | |
72 | #define INTA IRQ_IOP32X_XINT0 | |
73 | #define INTB IRQ_IOP32X_XINT1 | |
74 | #define INTC IRQ_IOP32X_XINT2 | |
75 | #define INTD IRQ_IOP32X_XINT3 | |
76 | ||
77 | static inline int __init | |
78 | glantank_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin) | |
79 | { | |
80 | static int pci_irq_table[][4] = { | |
81 | /* | |
82 | * PCI IDSEL/INTPIN->INTLINE | |
83 | * A B C D | |
84 | */ | |
85 | {INTD, INTD, INTD, INTD}, /* UART (8250) */ | |
86 | {INTA, INTA, INTA, INTA}, /* Ethernet (E1000) */ | |
87 | {INTB, INTB, INTB, INTB}, /* IDE (AEC6280R) */ | |
88 | {INTC, INTC, INTC, INTC}, /* USB (NEC) */ | |
89 | }; | |
90 | ||
91 | BUG_ON(pin < 1 || pin > 4); | |
92 | ||
93 | return pci_irq_table[slot % 4][pin - 1]; | |
94 | } | |
95 | ||
96 | static struct hw_pci glantank_pci __initdata = { | |
97 | .swizzle = pci_std_swizzle, | |
98 | .nr_controllers = 1, | |
99 | .setup = iop3xx_pci_setup, | |
100 | .preinit = iop3xx_pci_preinit, | |
101 | .scan = iop3xx_pci_scan_bus, | |
102 | .map_irq = glantank_pci_map_irq, | |
103 | }; | |
104 | ||
105 | static int __init glantank_pci_init(void) | |
106 | { | |
107 | if (machine_is_glantank()) | |
108 | pci_common_init(&glantank_pci); | |
109 | ||
110 | return 0; | |
111 | } | |
112 | ||
113 | subsys_initcall(glantank_pci_init); | |
114 | ||
115 | ||
116 | /* | |
117 | * GLAN Tank machine initialization. | |
118 | */ | |
119 | static struct physmap_flash_data glantank_flash_data = { | |
120 | .width = 1, | |
121 | }; | |
122 | ||
123 | static struct resource glantank_flash_resource = { | |
124 | .start = 0xf0000000, | |
125 | .end = 0xf007ffff, | |
126 | .flags = IORESOURCE_MEM, | |
127 | }; | |
128 | ||
129 | static struct platform_device glantank_flash_device = { | |
130 | .name = "physmap-flash", | |
131 | .id = 0, | |
132 | .dev = { | |
133 | .platform_data = &glantank_flash_data, | |
134 | }, | |
135 | .num_resources = 1, | |
136 | .resource = &glantank_flash_resource, | |
137 | }; | |
138 | ||
139 | static struct plat_serial8250_port glantank_serial_port[] = { | |
140 | { | |
141 | .mapbase = GLANTANK_UART, | |
142 | .membase = (char *)GLANTANK_UART, | |
143 | .irq = IRQ_IOP32X_XINT3, | |
144 | .flags = UPF_SKIP_TEST, | |
145 | .iotype = UPIO_MEM, | |
146 | .regshift = 0, | |
147 | .uartclk = 1843200, | |
148 | }, | |
149 | { }, | |
150 | }; | |
151 | ||
152 | static struct resource glantank_uart_resource = { | |
153 | .start = GLANTANK_UART, | |
154 | .end = GLANTANK_UART + 7, | |
155 | .flags = IORESOURCE_MEM, | |
156 | }; | |
157 | ||
158 | static struct platform_device glantank_serial_device = { | |
159 | .name = "serial8250", | |
160 | .id = PLAT8250_DEV_PLATFORM, | |
161 | .dev = { | |
162 | .platform_data = glantank_serial_port, | |
163 | }, | |
164 | .num_resources = 1, | |
165 | .resource = &glantank_uart_resource, | |
166 | }; | |
167 | ||
168 | static void glantank_power_off(void) | |
169 | { | |
170 | __raw_writeb(0x01, 0xfe8d0004); | |
171 | ||
172 | while (1) | |
173 | ; | |
174 | } | |
175 | ||
176 | static void __init glantank_init_machine(void) | |
177 | { | |
178 | platform_device_register(&iop3xx_i2c0_device); | |
179 | platform_device_register(&iop3xx_i2c1_device); | |
180 | platform_device_register(&glantank_flash_device); | |
181 | platform_device_register(&glantank_serial_device); | |
182 | ||
183 | pm_power_off = glantank_power_off; | |
184 | } | |
185 | ||
186 | MACHINE_START(GLANTANK, "GLAN Tank") | |
187 | /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ | |
188 | .phys_io = GLANTANK_UART, | |
189 | .io_pg_offst = ((GLANTANK_UART) >> 18) & 0xfffc, | |
190 | .boot_params = 0xa0000100, | |
191 | .map_io = glantank_map_io, | |
192 | .init_irq = iop32x_init_irq, | |
193 | .timer = &glantank_timer, | |
194 | .init_machine = glantank_init_machine, | |
195 | MACHINE_END |