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1da177e4 LT |
1 | /* |
2 | * arch/arm/mach-ixp4xx/gtwx5715-setup.c | |
3 | * | |
6cbdc8c5 | 4 | * Gemtek GTWX5715 (Linksys WRV54G) board setup |
1da177e4 LT |
5 | * |
6 | * Copyright (C) 2004 George T. Joseph | |
7 | * Derived from Coyote | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU General Public License | |
11 | * as published by the Free Software Foundation; either version 2 | |
12 | * of the License, or (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
22 | * | |
23 | */ | |
24 | ||
25 | #include <linux/init.h> | |
26 | #include <linux/device.h> | |
27 | #include <linux/serial.h> | |
28 | #include <linux/tty.h> | |
29 | #include <linux/serial_8250.h> | |
54e269ea | 30 | #include <linux/slab.h> |
1da177e4 LT |
31 | |
32 | #include <asm/types.h> | |
33 | #include <asm/setup.h> | |
34 | #include <asm/memory.h> | |
a09e64fb | 35 | #include <mach/hardware.h> |
1da177e4 LT |
36 | #include <asm/irq.h> |
37 | #include <asm/mach-types.h> | |
38 | #include <asm/mach/arch.h> | |
39 | #include <asm/mach/flash.h> | |
a09e64fb | 40 | #include <mach/gtwx5715.h> |
1da177e4 LT |
41 | |
42 | /* | |
43 | * Xscale UART registers are 32 bits wide with only the least | |
44 | * significant 8 bits having any meaning. From a configuration | |
45 | * perspective, this means 2 things... | |
46 | * | |
47 | * Setting .regshift = 2 so that the standard 16550 registers | |
48 | * line up on every 4th byte. | |
49 | * | |
50 | * Shifting the register start virtual address +3 bytes when | |
51 | * compiled big-endian. Since register writes are done on a | |
52 | * single byte basis, if the shift isn't done the driver will | |
53 | * write the value into the most significant byte of the register, | |
54 | * which is ignored, instead of the least significant. | |
55 | */ | |
56 | ||
57 | #ifdef __ARMEB__ | |
58 | #define REG_OFFSET 3 | |
59 | #else | |
60 | #define REG_OFFSET 0 | |
61 | #endif | |
62 | ||
63 | /* | |
64 | * Only the second or "console" uart is connected on the gtwx5715. | |
65 | */ | |
66 | ||
67 | static struct resource gtwx5715_uart_resources[] = { | |
68 | { | |
69 | .start = IXP4XX_UART2_BASE_PHYS, | |
70 | .end = IXP4XX_UART2_BASE_PHYS + 0x0fff, | |
71 | .flags = IORESOURCE_MEM, | |
72 | }, | |
73 | { | |
74 | .start = IRQ_IXP4XX_UART2, | |
75 | .end = IRQ_IXP4XX_UART2, | |
76 | .flags = IORESOURCE_IRQ, | |
77 | }, | |
78 | { }, | |
79 | }; | |
80 | ||
81 | ||
82 | static struct plat_serial8250_port gtwx5715_uart_platform_data[] = { | |
83 | { | |
84 | .mapbase = IXP4XX_UART2_BASE_PHYS, | |
85 | .membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET, | |
86 | .irq = IRQ_IXP4XX_UART2, | |
8c741ed7 | 87 | .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, |
1da177e4 LT |
88 | .iotype = UPIO_MEM, |
89 | .regshift = 2, | |
90 | .uartclk = IXP4XX_UART_XTAL, | |
91 | }, | |
92 | { }, | |
93 | }; | |
94 | ||
95 | static struct platform_device gtwx5715_uart_device = { | |
96 | .name = "serial8250", | |
6df29deb | 97 | .id = PLAT8250_DEV_PLATFORM, |
1da177e4 LT |
98 | .dev = { |
99 | .platform_data = gtwx5715_uart_platform_data, | |
100 | }, | |
101 | .num_resources = 2, | |
102 | .resource = gtwx5715_uart_resources, | |
103 | }; | |
104 | ||
1da177e4 LT |
105 | static struct flash_platform_data gtwx5715_flash_data = { |
106 | .map_name = "cfi_probe", | |
107 | .width = 2, | |
108 | }; | |
109 | ||
4c756f4e | 110 | static struct resource gtwx5715_flash_resource = { |
1da177e4 | 111 | .flags = IORESOURCE_MEM, |
4c756f4e | 112 | }; |
1da177e4 LT |
113 | |
114 | static struct platform_device gtwx5715_flash = { | |
115 | .name = "IXP4XX-Flash", | |
116 | .id = 0, | |
117 | .dev = { | |
118 | .platform_data = >wx5715_flash_data, | |
119 | }, | |
120 | .num_resources = 1, | |
121 | .resource = >wx5715_flash_resource, | |
122 | }; | |
123 | ||
124 | static struct platform_device *gtwx5715_devices[] __initdata = { | |
125 | >wx5715_uart_device, | |
126 | >wx5715_flash, | |
127 | }; | |
128 | ||
129 | static void __init gtwx5715_init(void) | |
130 | { | |
54e269ea DS |
131 | ixp4xx_sys_init(); |
132 | ||
54e269ea DS |
133 | gtwx5715_flash_resource.start = IXP4XX_EXP_BUS_BASE(0); |
134 | gtwx5715_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + SZ_8M - 1; | |
135 | ||
1da177e4 LT |
136 | platform_add_devices(gtwx5715_devices, ARRAY_SIZE(gtwx5715_devices)); |
137 | } | |
138 | ||
139 | ||
140 | MACHINE_START(GTWX5715, "Gemtek GTWX5715 (Linksys WRV54G)") | |
e9dea0c6 | 141 | /* Maintainer: George Joseph */ |
e9dea0c6 RK |
142 | .phys_io = IXP4XX_UART2_BASE_PHYS, |
143 | .io_pg_offst = ((IXP4XX_UART2_BASE_VIRT) >> 18) & 0xfffc, | |
e605ecd7 | 144 | .map_io = ixp4xx_map_io, |
e9dea0c6 RK |
145 | .init_irq = ixp4xx_init_irq, |
146 | .timer = &ixp4xx_timer, | |
147 | .boot_params = 0x0100, | |
148 | .init_machine = gtwx5715_init, | |
1da177e4 LT |
149 | MACHINE_END |
150 | ||
151 |