Commit | Line | Data |
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e7736d47 LB |
1 | /* |
2 | * arch/arm/mach-ep93xx/ts72xx.c | |
3 | * Technologic Systems TS72xx SBC support. | |
4 | * | |
5 | * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org> | |
6 | * | |
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. | |
11 | */ | |
12 | ||
030d2dd4 HS |
13 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
14 | ||
e7736d47 LB |
15 | #include <linux/kernel.h> |
16 | #include <linux/init.h> | |
7ba01f97 | 17 | #include <linux/platform_device.h> |
fced80c7 | 18 | #include <linux/io.h> |
583ddafe | 19 | #include <linux/m48t86.h> |
030d2dd4 HS |
20 | #include <linux/mtd/nand.h> |
21 | #include <linux/mtd/partitions.h> | |
583ddafe | 22 | |
a09e64fb | 23 | #include <mach/hardware.h> |
583ddafe HS |
24 | #include <mach/ts72xx.h> |
25 | ||
9a6879bd | 26 | #include <asm/hardware/vic.h> |
e7736d47 | 27 | #include <asm/mach-types.h> |
e7736d47 | 28 | #include <asm/mach/map.h> |
583ddafe HS |
29 | #include <asm/mach/arch.h> |
30 | ||
e7736d47 LB |
31 | |
32 | static struct map_desc ts72xx_io_desc[] __initdata = { | |
33 | { | |
34 | .virtual = TS72XX_MODEL_VIRT_BASE, | |
35 | .pfn = __phys_to_pfn(TS72XX_MODEL_PHYS_BASE), | |
36 | .length = TS72XX_MODEL_SIZE, | |
37 | .type = MT_DEVICE, | |
38 | }, { | |
39 | .virtual = TS72XX_OPTIONS_VIRT_BASE, | |
40 | .pfn = __phys_to_pfn(TS72XX_OPTIONS_PHYS_BASE), | |
41 | .length = TS72XX_OPTIONS_SIZE, | |
42 | .type = MT_DEVICE, | |
43 | }, { | |
44 | .virtual = TS72XX_OPTIONS2_VIRT_BASE, | |
45 | .pfn = __phys_to_pfn(TS72XX_OPTIONS2_PHYS_BASE), | |
46 | .length = TS72XX_OPTIONS2_SIZE, | |
47 | .type = MT_DEVICE, | |
7ba01f97 LB |
48 | }, { |
49 | .virtual = TS72XX_RTC_INDEX_VIRT_BASE, | |
50 | .pfn = __phys_to_pfn(TS72XX_RTC_INDEX_PHYS_BASE), | |
51 | .length = TS72XX_RTC_INDEX_SIZE, | |
52 | .type = MT_DEVICE, | |
53 | }, { | |
54 | .virtual = TS72XX_RTC_DATA_VIRT_BASE, | |
55 | .pfn = __phys_to_pfn(TS72XX_RTC_DATA_PHYS_BASE), | |
56 | .length = TS72XX_RTC_DATA_SIZE, | |
57 | .type = MT_DEVICE, | |
e7736d47 LB |
58 | } |
59 | }; | |
60 | ||
030d2dd4 HS |
61 | static void __init ts72xx_map_io(void) |
62 | { | |
63 | ep93xx_map_io(); | |
64 | iotable_init(ts72xx_io_desc, ARRAY_SIZE(ts72xx_io_desc)); | |
65 | } | |
66 | ||
67 | ||
68 | /************************************************************************* | |
69 | * NAND flash | |
70 | *************************************************************************/ | |
71 | #define TS72XX_NAND_CONTROL_ADDR_LINE 22 /* 0xN0400000 */ | |
72 | #define TS72XX_NAND_BUSY_ADDR_LINE 23 /* 0xN0800000 */ | |
73 | ||
74 | static void ts72xx_nand_hwcontrol(struct mtd_info *mtd, | |
75 | int cmd, unsigned int ctrl) | |
76 | { | |
77 | struct nand_chip *chip = mtd->priv; | |
78 | ||
79 | if (ctrl & NAND_CTRL_CHANGE) { | |
80 | void __iomem *addr = chip->IO_ADDR_R; | |
81 | unsigned char bits; | |
82 | ||
83 | addr += (1 << TS72XX_NAND_CONTROL_ADDR_LINE); | |
84 | ||
85 | bits = __raw_readb(addr) & ~0x07; | |
86 | bits |= (ctrl & NAND_NCE) << 2; /* bit 0 -> bit 2 */ | |
87 | bits |= (ctrl & NAND_CLE); /* bit 1 -> bit 1 */ | |
88 | bits |= (ctrl & NAND_ALE) >> 2; /* bit 2 -> bit 0 */ | |
89 | ||
90 | __raw_writeb(bits, addr); | |
e7736d47 | 91 | } |
e7736d47 | 92 | |
030d2dd4 HS |
93 | if (cmd != NAND_CMD_NONE) |
94 | __raw_writeb(cmd, chip->IO_ADDR_W); | |
95 | } | |
96 | ||
97 | static int ts72xx_nand_device_ready(struct mtd_info *mtd) | |
98 | { | |
99 | struct nand_chip *chip = mtd->priv; | |
100 | void __iomem *addr = chip->IO_ADDR_R; | |
101 | ||
102 | addr += (1 << TS72XX_NAND_BUSY_ADDR_LINE); | |
103 | ||
104 | return !!(__raw_readb(addr) & 0x20); | |
105 | } | |
106 | ||
107 | static const char *ts72xx_nand_part_probes[] = { "cmdlinepart", NULL }; | |
108 | ||
109 | #define TS72XX_BOOTROM_PART_SIZE (SZ_16K) | |
110 | #define TS72XX_REDBOOT_PART_SIZE (SZ_2M + SZ_1M) | |
111 | ||
112 | static struct mtd_partition ts72xx_nand_parts[] = { | |
e7736d47 | 113 | { |
030d2dd4 HS |
114 | .name = "TS-BOOTROM", |
115 | .offset = 0, | |
116 | .size = TS72XX_BOOTROM_PART_SIZE, | |
117 | .mask_flags = MTD_WRITEABLE, /* force read-only */ | |
e7736d47 | 118 | }, { |
030d2dd4 | 119 | .name = "Linux", |
78dd9e35 DES |
120 | .offset = MTDPART_OFS_RETAIN, |
121 | .size = TS72XX_REDBOOT_PART_SIZE, | |
122 | /* leave so much for last partition */ | |
e7736d47 | 123 | }, { |
030d2dd4 HS |
124 | .name = "RedBoot", |
125 | .offset = MTDPART_OFS_APPEND, | |
126 | .size = MTDPART_SIZ_FULL, | |
127 | .mask_flags = MTD_WRITEABLE, /* force read-only */ | |
128 | }, | |
e7736d47 LB |
129 | }; |
130 | ||
030d2dd4 HS |
131 | static struct platform_nand_data ts72xx_nand_data = { |
132 | .chip = { | |
133 | .nr_chips = 1, | |
134 | .chip_offset = 0, | |
135 | .chip_delay = 15, | |
136 | .part_probe_types = ts72xx_nand_part_probes, | |
78dd9e35 DES |
137 | .partitions = ts72xx_nand_parts, |
138 | .nr_partitions = ARRAY_SIZE(ts72xx_nand_parts), | |
030d2dd4 HS |
139 | }, |
140 | .ctrl = { | |
141 | .cmd_ctrl = ts72xx_nand_hwcontrol, | |
142 | .dev_ready = ts72xx_nand_device_ready, | |
143 | }, | |
144 | }; | |
145 | ||
146 | static struct resource ts72xx_nand_resource[] = { | |
147 | { | |
148 | .start = 0, /* filled in later */ | |
149 | .end = 0, /* filled in later */ | |
150 | .flags = IORESOURCE_MEM, | |
151 | }, | |
152 | }; | |
153 | ||
154 | static struct platform_device ts72xx_nand_flash = { | |
155 | .name = "gen_nand", | |
156 | .id = -1, | |
157 | .dev.platform_data = &ts72xx_nand_data, | |
158 | .resource = ts72xx_nand_resource, | |
159 | .num_resources = ARRAY_SIZE(ts72xx_nand_resource), | |
160 | }; | |
161 | ||
162 | ||
3174c88a HS |
163 | static void __init ts72xx_register_flash(void) |
164 | { | |
16bcf78f HS |
165 | /* |
166 | * TS7200 has NOR flash all other TS72xx board have NAND flash. | |
167 | */ | |
030d2dd4 | 168 | if (board_is_ts7200()) { |
16bcf78f | 169 | ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_16M); |
030d2dd4 HS |
170 | } else { |
171 | resource_size_t start; | |
172 | ||
173 | if (is_ts9420_installed()) | |
174 | start = EP93XX_CS7_PHYS_BASE; | |
175 | else | |
176 | start = EP93XX_CS6_PHYS_BASE; | |
177 | ||
178 | ts72xx_nand_resource[0].start = start; | |
179 | ts72xx_nand_resource[0].end = start + SZ_16M - 1; | |
180 | ||
181 | platform_device_register(&ts72xx_nand_flash); | |
182 | } | |
3174c88a HS |
183 | } |
184 | ||
030d2dd4 | 185 | |
fd0a0ac1 | 186 | static unsigned char ts72xx_rtc_readbyte(unsigned long addr) |
7ba01f97 LB |
187 | { |
188 | __raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE); | |
189 | return __raw_readb(TS72XX_RTC_DATA_VIRT_BASE); | |
190 | } | |
191 | ||
fd0a0ac1 | 192 | static void ts72xx_rtc_writebyte(unsigned char value, unsigned long addr) |
7ba01f97 LB |
193 | { |
194 | __raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE); | |
195 | __raw_writeb(value, TS72XX_RTC_DATA_VIRT_BASE); | |
196 | } | |
197 | ||
198 | static struct m48t86_ops ts72xx_rtc_ops = { | |
e48f3fa3 HS |
199 | .readbyte = ts72xx_rtc_readbyte, |
200 | .writebyte = ts72xx_rtc_writebyte, | |
7ba01f97 LB |
201 | }; |
202 | ||
203 | static struct platform_device ts72xx_rtc_device = { | |
e48f3fa3 HS |
204 | .name = "rtc-m48t86", |
205 | .id = -1, | |
206 | .dev = { | |
207 | .platform_data = &ts72xx_rtc_ops, | |
7ba01f97 | 208 | }, |
e48f3fa3 | 209 | .num_resources = 0, |
7ba01f97 LB |
210 | }; |
211 | ||
12926dc4 MW |
212 | static struct resource ts72xx_wdt_resources[] = { |
213 | { | |
214 | .start = TS72XX_WDT_CONTROL_PHYS_BASE, | |
215 | .end = TS72XX_WDT_CONTROL_PHYS_BASE + SZ_4K - 1, | |
216 | .flags = IORESOURCE_MEM, | |
217 | }, | |
218 | { | |
219 | .start = TS72XX_WDT_FEED_PHYS_BASE, | |
220 | .end = TS72XX_WDT_FEED_PHYS_BASE + SZ_4K - 1, | |
221 | .flags = IORESOURCE_MEM, | |
222 | }, | |
223 | }; | |
224 | ||
225 | static struct platform_device ts72xx_wdt_device = { | |
226 | .name = "ts72xx-wdt", | |
227 | .id = -1, | |
228 | .num_resources = ARRAY_SIZE(ts72xx_wdt_resources), | |
229 | .resource = ts72xx_wdt_resources, | |
230 | }; | |
231 | ||
b370e082 | 232 | static struct ep93xx_eth_data __initdata ts72xx_eth_data = { |
e48f3fa3 | 233 | .phy_id = 1, |
730ee9f3 LB |
234 | }; |
235 | ||
e7736d47 LB |
236 | static void __init ts72xx_init_machine(void) |
237 | { | |
238 | ep93xx_init_devices(); | |
3174c88a | 239 | ts72xx_register_flash(); |
7ba01f97 | 240 | platform_device_register(&ts72xx_rtc_device); |
12926dc4 | 241 | platform_device_register(&ts72xx_wdt_device); |
730ee9f3 | 242 | |
a0a08fdc | 243 | ep93xx_register_eth(&ts72xx_eth_data, 1); |
e7736d47 LB |
244 | } |
245 | ||
246 | MACHINE_START(TS72XX, "Technologic Systems TS-72xx SBC") | |
247 | /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ | |
e562cf17 | 248 | .atag_offset = 0x100, |
e7736d47 LB |
249 | .map_io = ts72xx_map_io, |
250 | .init_irq = ep93xx_init_irq, | |
9a6879bd | 251 | .handle_irq = vic_handle_irq, |
e7736d47 LB |
252 | .timer = &ep93xx_timer, |
253 | .init_machine = ts72xx_init_machine, | |
3275166e | 254 | .restart = ep93xx_restart, |
e7736d47 | 255 | MACHINE_END |