Commit | Line | Data |
---|---|---|
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 | ||
e7736d47 | 26 | #include <asm/mach-types.h> |
e7736d47 | 27 | #include <asm/mach/map.h> |
583ddafe HS |
28 | #include <asm/mach/arch.h> |
29 | ||
e7736d47 LB |
30 | |
31 | static struct map_desc ts72xx_io_desc[] __initdata = { | |
32 | { | |
33 | .virtual = TS72XX_MODEL_VIRT_BASE, | |
34 | .pfn = __phys_to_pfn(TS72XX_MODEL_PHYS_BASE), | |
35 | .length = TS72XX_MODEL_SIZE, | |
36 | .type = MT_DEVICE, | |
37 | }, { | |
38 | .virtual = TS72XX_OPTIONS_VIRT_BASE, | |
39 | .pfn = __phys_to_pfn(TS72XX_OPTIONS_PHYS_BASE), | |
40 | .length = TS72XX_OPTIONS_SIZE, | |
41 | .type = MT_DEVICE, | |
42 | }, { | |
43 | .virtual = TS72XX_OPTIONS2_VIRT_BASE, | |
44 | .pfn = __phys_to_pfn(TS72XX_OPTIONS2_PHYS_BASE), | |
45 | .length = TS72XX_OPTIONS2_SIZE, | |
46 | .type = MT_DEVICE, | |
7ba01f97 LB |
47 | }, { |
48 | .virtual = TS72XX_RTC_INDEX_VIRT_BASE, | |
49 | .pfn = __phys_to_pfn(TS72XX_RTC_INDEX_PHYS_BASE), | |
50 | .length = TS72XX_RTC_INDEX_SIZE, | |
51 | .type = MT_DEVICE, | |
52 | }, { | |
53 | .virtual = TS72XX_RTC_DATA_VIRT_BASE, | |
54 | .pfn = __phys_to_pfn(TS72XX_RTC_DATA_PHYS_BASE), | |
55 | .length = TS72XX_RTC_DATA_SIZE, | |
56 | .type = MT_DEVICE, | |
e7736d47 LB |
57 | } |
58 | }; | |
59 | ||
030d2dd4 HS |
60 | static void __init ts72xx_map_io(void) |
61 | { | |
62 | ep93xx_map_io(); | |
63 | iotable_init(ts72xx_io_desc, ARRAY_SIZE(ts72xx_io_desc)); | |
64 | } | |
65 | ||
66 | ||
67 | /************************************************************************* | |
68 | * NAND flash | |
69 | *************************************************************************/ | |
70 | #define TS72XX_NAND_CONTROL_ADDR_LINE 22 /* 0xN0400000 */ | |
71 | #define TS72XX_NAND_BUSY_ADDR_LINE 23 /* 0xN0800000 */ | |
72 | ||
73 | static void ts72xx_nand_hwcontrol(struct mtd_info *mtd, | |
74 | int cmd, unsigned int ctrl) | |
75 | { | |
76 | struct nand_chip *chip = mtd->priv; | |
77 | ||
78 | if (ctrl & NAND_CTRL_CHANGE) { | |
79 | void __iomem *addr = chip->IO_ADDR_R; | |
80 | unsigned char bits; | |
81 | ||
82 | addr += (1 << TS72XX_NAND_CONTROL_ADDR_LINE); | |
83 | ||
84 | bits = __raw_readb(addr) & ~0x07; | |
85 | bits |= (ctrl & NAND_NCE) << 2; /* bit 0 -> bit 2 */ | |
86 | bits |= (ctrl & NAND_CLE); /* bit 1 -> bit 1 */ | |
87 | bits |= (ctrl & NAND_ALE) >> 2; /* bit 2 -> bit 0 */ | |
88 | ||
89 | __raw_writeb(bits, addr); | |
e7736d47 | 90 | } |
e7736d47 | 91 | |
030d2dd4 HS |
92 | if (cmd != NAND_CMD_NONE) |
93 | __raw_writeb(cmd, chip->IO_ADDR_W); | |
94 | } | |
95 | ||
96 | static int ts72xx_nand_device_ready(struct mtd_info *mtd) | |
97 | { | |
98 | struct nand_chip *chip = mtd->priv; | |
99 | void __iomem *addr = chip->IO_ADDR_R; | |
100 | ||
101 | addr += (1 << TS72XX_NAND_BUSY_ADDR_LINE); | |
102 | ||
103 | return !!(__raw_readb(addr) & 0x20); | |
104 | } | |
105 | ||
106 | static const char *ts72xx_nand_part_probes[] = { "cmdlinepart", NULL }; | |
107 | ||
108 | #define TS72XX_BOOTROM_PART_SIZE (SZ_16K) | |
109 | #define TS72XX_REDBOOT_PART_SIZE (SZ_2M + SZ_1M) | |
110 | ||
111 | static struct mtd_partition ts72xx_nand_parts[] = { | |
e7736d47 | 112 | { |
030d2dd4 HS |
113 | .name = "TS-BOOTROM", |
114 | .offset = 0, | |
115 | .size = TS72XX_BOOTROM_PART_SIZE, | |
116 | .mask_flags = MTD_WRITEABLE, /* force read-only */ | |
e7736d47 | 117 | }, { |
030d2dd4 HS |
118 | .name = "Linux", |
119 | .offset = MTDPART_OFS_APPEND, | |
120 | .size = 0, /* filled in later */ | |
e7736d47 | 121 | }, { |
030d2dd4 HS |
122 | .name = "RedBoot", |
123 | .offset = MTDPART_OFS_APPEND, | |
124 | .size = MTDPART_SIZ_FULL, | |
125 | .mask_flags = MTD_WRITEABLE, /* force read-only */ | |
126 | }, | |
e7736d47 LB |
127 | }; |
128 | ||
030d2dd4 HS |
129 | static void ts72xx_nand_set_parts(uint64_t size, |
130 | struct platform_nand_chip *chip) | |
e7736d47 | 131 | { |
030d2dd4 HS |
132 | /* Factory TS-72xx boards only come with 32MiB or 128MiB NAND options */ |
133 | if (size == SZ_32M || size == SZ_128M) { | |
134 | /* Set the "Linux" partition size */ | |
135 | ts72xx_nand_parts[1].size = size - TS72XX_REDBOOT_PART_SIZE; | |
e7736d47 | 136 | |
030d2dd4 HS |
137 | chip->partitions = ts72xx_nand_parts; |
138 | chip->nr_partitions = ARRAY_SIZE(ts72xx_nand_parts); | |
139 | } else { | |
140 | pr_warning("Unknown nand disk size:%lluMiB\n", size >> 20); | |
e7736d47 LB |
141 | } |
142 | } | |
143 | ||
030d2dd4 HS |
144 | static struct platform_nand_data ts72xx_nand_data = { |
145 | .chip = { | |
146 | .nr_chips = 1, | |
147 | .chip_offset = 0, | |
148 | .chip_delay = 15, | |
149 | .part_probe_types = ts72xx_nand_part_probes, | |
150 | .set_parts = ts72xx_nand_set_parts, | |
151 | }, | |
152 | .ctrl = { | |
153 | .cmd_ctrl = ts72xx_nand_hwcontrol, | |
154 | .dev_ready = ts72xx_nand_device_ready, | |
155 | }, | |
156 | }; | |
157 | ||
158 | static struct resource ts72xx_nand_resource[] = { | |
159 | { | |
160 | .start = 0, /* filled in later */ | |
161 | .end = 0, /* filled in later */ | |
162 | .flags = IORESOURCE_MEM, | |
163 | }, | |
164 | }; | |
165 | ||
166 | static struct platform_device ts72xx_nand_flash = { | |
167 | .name = "gen_nand", | |
168 | .id = -1, | |
169 | .dev.platform_data = &ts72xx_nand_data, | |
170 | .resource = ts72xx_nand_resource, | |
171 | .num_resources = ARRAY_SIZE(ts72xx_nand_resource), | |
172 | }; | |
173 | ||
174 | ||
3174c88a HS |
175 | static void __init ts72xx_register_flash(void) |
176 | { | |
16bcf78f HS |
177 | /* |
178 | * TS7200 has NOR flash all other TS72xx board have NAND flash. | |
179 | */ | |
030d2dd4 | 180 | if (board_is_ts7200()) { |
16bcf78f | 181 | ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_16M); |
030d2dd4 HS |
182 | } else { |
183 | resource_size_t start; | |
184 | ||
185 | if (is_ts9420_installed()) | |
186 | start = EP93XX_CS7_PHYS_BASE; | |
187 | else | |
188 | start = EP93XX_CS6_PHYS_BASE; | |
189 | ||
190 | ts72xx_nand_resource[0].start = start; | |
191 | ts72xx_nand_resource[0].end = start + SZ_16M - 1; | |
192 | ||
193 | platform_device_register(&ts72xx_nand_flash); | |
194 | } | |
3174c88a HS |
195 | } |
196 | ||
030d2dd4 | 197 | |
fd0a0ac1 | 198 | static unsigned char ts72xx_rtc_readbyte(unsigned long addr) |
7ba01f97 LB |
199 | { |
200 | __raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE); | |
201 | return __raw_readb(TS72XX_RTC_DATA_VIRT_BASE); | |
202 | } | |
203 | ||
fd0a0ac1 | 204 | static void ts72xx_rtc_writebyte(unsigned char value, unsigned long addr) |
7ba01f97 LB |
205 | { |
206 | __raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE); | |
207 | __raw_writeb(value, TS72XX_RTC_DATA_VIRT_BASE); | |
208 | } | |
209 | ||
210 | static struct m48t86_ops ts72xx_rtc_ops = { | |
e48f3fa3 HS |
211 | .readbyte = ts72xx_rtc_readbyte, |
212 | .writebyte = ts72xx_rtc_writebyte, | |
7ba01f97 LB |
213 | }; |
214 | ||
215 | static struct platform_device ts72xx_rtc_device = { | |
e48f3fa3 HS |
216 | .name = "rtc-m48t86", |
217 | .id = -1, | |
218 | .dev = { | |
219 | .platform_data = &ts72xx_rtc_ops, | |
7ba01f97 | 220 | }, |
e48f3fa3 | 221 | .num_resources = 0, |
7ba01f97 LB |
222 | }; |
223 | ||
12926dc4 MW |
224 | static struct resource ts72xx_wdt_resources[] = { |
225 | { | |
226 | .start = TS72XX_WDT_CONTROL_PHYS_BASE, | |
227 | .end = TS72XX_WDT_CONTROL_PHYS_BASE + SZ_4K - 1, | |
228 | .flags = IORESOURCE_MEM, | |
229 | }, | |
230 | { | |
231 | .start = TS72XX_WDT_FEED_PHYS_BASE, | |
232 | .end = TS72XX_WDT_FEED_PHYS_BASE + SZ_4K - 1, | |
233 | .flags = IORESOURCE_MEM, | |
234 | }, | |
235 | }; | |
236 | ||
237 | static struct platform_device ts72xx_wdt_device = { | |
238 | .name = "ts72xx-wdt", | |
239 | .id = -1, | |
240 | .num_resources = ARRAY_SIZE(ts72xx_wdt_resources), | |
241 | .resource = ts72xx_wdt_resources, | |
242 | }; | |
243 | ||
b370e082 | 244 | static struct ep93xx_eth_data __initdata ts72xx_eth_data = { |
e48f3fa3 | 245 | .phy_id = 1, |
730ee9f3 LB |
246 | }; |
247 | ||
e7736d47 LB |
248 | static void __init ts72xx_init_machine(void) |
249 | { | |
250 | ep93xx_init_devices(); | |
3174c88a | 251 | ts72xx_register_flash(); |
7ba01f97 | 252 | platform_device_register(&ts72xx_rtc_device); |
12926dc4 | 253 | platform_device_register(&ts72xx_wdt_device); |
730ee9f3 | 254 | |
a0a08fdc | 255 | ep93xx_register_eth(&ts72xx_eth_data, 1); |
e7736d47 LB |
256 | } |
257 | ||
258 | MACHINE_START(TS72XX, "Technologic Systems TS-72xx SBC") | |
259 | /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ | |
e48f3fa3 | 260 | .boot_params = EP93XX_SDCE3_PHYS_BASE_SYNC + 0x100, |
e7736d47 LB |
261 | .map_io = ts72xx_map_io, |
262 | .init_irq = ep93xx_init_irq, | |
263 | .timer = &ep93xx_timer, | |
264 | .init_machine = ts72xx_init_machine, | |
265 | MACHINE_END |