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[linux-2.6.34.14-moxart.git] / arch / arm / mach-ep93xx / ts72xx.c
blobfac1ec7a60fbb618c4b8a9463f58d73c19683cd4
1 /*
2 * arch/arm/mach-ep93xx/ts72xx.c
3 * Technologic Systems TS72xx SBC support.
5 * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or (at
10 * your option) any later version.
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/platform_device.h>
16 #include <linux/io.h>
17 #include <linux/m48t86.h>
18 #include <linux/mtd/physmap.h>
20 #include <mach/hardware.h>
21 #include <mach/ts72xx.h>
23 #include <asm/mach-types.h>
24 #include <asm/mach/map.h>
25 #include <asm/mach/arch.h>
28 static struct map_desc ts72xx_io_desc[] __initdata = {
30 .virtual = TS72XX_MODEL_VIRT_BASE,
31 .pfn = __phys_to_pfn(TS72XX_MODEL_PHYS_BASE),
32 .length = TS72XX_MODEL_SIZE,
33 .type = MT_DEVICE,
34 }, {
35 .virtual = TS72XX_OPTIONS_VIRT_BASE,
36 .pfn = __phys_to_pfn(TS72XX_OPTIONS_PHYS_BASE),
37 .length = TS72XX_OPTIONS_SIZE,
38 .type = MT_DEVICE,
39 }, {
40 .virtual = TS72XX_OPTIONS2_VIRT_BASE,
41 .pfn = __phys_to_pfn(TS72XX_OPTIONS2_PHYS_BASE),
42 .length = TS72XX_OPTIONS2_SIZE,
43 .type = MT_DEVICE,
44 }, {
45 .virtual = TS72XX_RTC_INDEX_VIRT_BASE,
46 .pfn = __phys_to_pfn(TS72XX_RTC_INDEX_PHYS_BASE),
47 .length = TS72XX_RTC_INDEX_SIZE,
48 .type = MT_DEVICE,
49 }, {
50 .virtual = TS72XX_RTC_DATA_VIRT_BASE,
51 .pfn = __phys_to_pfn(TS72XX_RTC_DATA_PHYS_BASE),
52 .length = TS72XX_RTC_DATA_SIZE,
53 .type = MT_DEVICE,
57 static struct map_desc ts72xx_nand_io_desc[] __initdata = {
59 .virtual = TS72XX_NAND_DATA_VIRT_BASE,
60 .pfn = __phys_to_pfn(TS72XX_NAND1_DATA_PHYS_BASE),
61 .length = TS72XX_NAND_DATA_SIZE,
62 .type = MT_DEVICE,
63 }, {
64 .virtual = TS72XX_NAND_CONTROL_VIRT_BASE,
65 .pfn = __phys_to_pfn(TS72XX_NAND1_CONTROL_PHYS_BASE),
66 .length = TS72XX_NAND_CONTROL_SIZE,
67 .type = MT_DEVICE,
68 }, {
69 .virtual = TS72XX_NAND_BUSY_VIRT_BASE,
70 .pfn = __phys_to_pfn(TS72XX_NAND1_BUSY_PHYS_BASE),
71 .length = TS72XX_NAND_BUSY_SIZE,
72 .type = MT_DEVICE,
76 static struct map_desc ts72xx_alternate_nand_io_desc[] __initdata = {
78 .virtual = TS72XX_NAND_DATA_VIRT_BASE,
79 .pfn = __phys_to_pfn(TS72XX_NAND2_DATA_PHYS_BASE),
80 .length = TS72XX_NAND_DATA_SIZE,
81 .type = MT_DEVICE,
82 }, {
83 .virtual = TS72XX_NAND_CONTROL_VIRT_BASE,
84 .pfn = __phys_to_pfn(TS72XX_NAND2_CONTROL_PHYS_BASE),
85 .length = TS72XX_NAND_CONTROL_SIZE,
86 .type = MT_DEVICE,
87 }, {
88 .virtual = TS72XX_NAND_BUSY_VIRT_BASE,
89 .pfn = __phys_to_pfn(TS72XX_NAND2_BUSY_PHYS_BASE),
90 .length = TS72XX_NAND_BUSY_SIZE,
91 .type = MT_DEVICE,
95 static void __init ts72xx_map_io(void)
97 ep93xx_map_io();
98 iotable_init(ts72xx_io_desc, ARRAY_SIZE(ts72xx_io_desc));
101 * The TS-7200 has NOR flash, the other models have NAND flash.
103 if (!board_is_ts7200()) {
104 if (is_ts9420_installed()) {
105 iotable_init(ts72xx_alternate_nand_io_desc,
106 ARRAY_SIZE(ts72xx_alternate_nand_io_desc));
107 } else {
108 iotable_init(ts72xx_nand_io_desc,
109 ARRAY_SIZE(ts72xx_nand_io_desc));
114 /*************************************************************************
115 * NOR flash (TS-7200 only)
116 *************************************************************************/
117 static struct physmap_flash_data ts72xx_flash_data = {
118 .width = 2,
121 static struct resource ts72xx_flash_resource = {
122 .start = EP93XX_CS6_PHYS_BASE,
123 .end = EP93XX_CS6_PHYS_BASE + SZ_16M - 1,
124 .flags = IORESOURCE_MEM,
127 static struct platform_device ts72xx_flash = {
128 .name = "physmap-flash",
129 .id = 0,
130 .dev = {
131 .platform_data = &ts72xx_flash_data,
133 .num_resources = 1,
134 .resource = &ts72xx_flash_resource,
137 static void __init ts72xx_register_flash(void)
139 if (board_is_ts7200())
140 platform_device_register(&ts72xx_flash);
143 static unsigned char ts72xx_rtc_readbyte(unsigned long addr)
145 __raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE);
146 return __raw_readb(TS72XX_RTC_DATA_VIRT_BASE);
149 static void ts72xx_rtc_writebyte(unsigned char value, unsigned long addr)
151 __raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE);
152 __raw_writeb(value, TS72XX_RTC_DATA_VIRT_BASE);
155 static struct m48t86_ops ts72xx_rtc_ops = {
156 .readbyte = ts72xx_rtc_readbyte,
157 .writebyte = ts72xx_rtc_writebyte,
160 static struct platform_device ts72xx_rtc_device = {
161 .name = "rtc-m48t86",
162 .id = -1,
163 .dev = {
164 .platform_data = &ts72xx_rtc_ops,
166 .num_resources = 0,
169 static struct resource ts72xx_wdt_resources[] = {
171 .start = TS72XX_WDT_CONTROL_PHYS_BASE,
172 .end = TS72XX_WDT_CONTROL_PHYS_BASE + SZ_4K - 1,
173 .flags = IORESOURCE_MEM,
176 .start = TS72XX_WDT_FEED_PHYS_BASE,
177 .end = TS72XX_WDT_FEED_PHYS_BASE + SZ_4K - 1,
178 .flags = IORESOURCE_MEM,
182 static struct platform_device ts72xx_wdt_device = {
183 .name = "ts72xx-wdt",
184 .id = -1,
185 .num_resources = ARRAY_SIZE(ts72xx_wdt_resources),
186 .resource = ts72xx_wdt_resources,
189 static struct ep93xx_eth_data ts72xx_eth_data = {
190 .phy_id = 1,
193 static void __init ts72xx_init_machine(void)
195 ep93xx_init_devices();
196 ts72xx_register_flash();
197 platform_device_register(&ts72xx_rtc_device);
198 platform_device_register(&ts72xx_wdt_device);
200 ep93xx_register_eth(&ts72xx_eth_data, 1);
203 MACHINE_START(TS72XX, "Technologic Systems TS-72xx SBC")
204 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
205 .phys_io = EP93XX_APB_PHYS_BASE,
206 .io_pg_offst = ((EP93XX_APB_VIRT_BASE) >> 18) & 0xfffc,
207 .boot_params = EP93XX_SDCE3_PHYS_BASE_SYNC + 0x100,
208 .map_io = ts72xx_map_io,
209 .init_irq = ep93xx_init_irq,
210 .timer = &ep93xx_timer,
211 .init_machine = ts72xx_init_machine,
212 MACHINE_END