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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 | ||
258249ec | 31 | #include "soc.h" |
e7736d47 LB |
32 | |
33 | static struct map_desc ts72xx_io_desc[] __initdata = { | |
34 | { | |
29fe651f | 35 | .virtual = (unsigned long)TS72XX_MODEL_VIRT_BASE, |
e7736d47 LB |
36 | .pfn = __phys_to_pfn(TS72XX_MODEL_PHYS_BASE), |
37 | .length = TS72XX_MODEL_SIZE, | |
38 | .type = MT_DEVICE, | |
39 | }, { | |
29fe651f | 40 | .virtual = (unsigned long)TS72XX_OPTIONS_VIRT_BASE, |
e7736d47 LB |
41 | .pfn = __phys_to_pfn(TS72XX_OPTIONS_PHYS_BASE), |
42 | .length = TS72XX_OPTIONS_SIZE, | |
43 | .type = MT_DEVICE, | |
44 | }, { | |
29fe651f | 45 | .virtual = (unsigned long)TS72XX_OPTIONS2_VIRT_BASE, |
e7736d47 LB |
46 | .pfn = __phys_to_pfn(TS72XX_OPTIONS2_PHYS_BASE), |
47 | .length = TS72XX_OPTIONS2_SIZE, | |
48 | .type = MT_DEVICE, | |
7ba01f97 | 49 | }, { |
29fe651f | 50 | .virtual = (unsigned long)TS72XX_RTC_INDEX_VIRT_BASE, |
7ba01f97 LB |
51 | .pfn = __phys_to_pfn(TS72XX_RTC_INDEX_PHYS_BASE), |
52 | .length = TS72XX_RTC_INDEX_SIZE, | |
53 | .type = MT_DEVICE, | |
54 | }, { | |
29fe651f | 55 | .virtual = (unsigned long)TS72XX_RTC_DATA_VIRT_BASE, |
7ba01f97 LB |
56 | .pfn = __phys_to_pfn(TS72XX_RTC_DATA_PHYS_BASE), |
57 | .length = TS72XX_RTC_DATA_SIZE, | |
58 | .type = MT_DEVICE, | |
e7736d47 LB |
59 | } |
60 | }; | |
61 | ||
030d2dd4 HS |
62 | static void __init ts72xx_map_io(void) |
63 | { | |
64 | ep93xx_map_io(); | |
65 | iotable_init(ts72xx_io_desc, ARRAY_SIZE(ts72xx_io_desc)); | |
66 | } | |
67 | ||
68 | ||
69 | /************************************************************************* | |
70 | * NAND flash | |
71 | *************************************************************************/ | |
72 | #define TS72XX_NAND_CONTROL_ADDR_LINE 22 /* 0xN0400000 */ | |
73 | #define TS72XX_NAND_BUSY_ADDR_LINE 23 /* 0xN0800000 */ | |
74 | ||
75 | static void ts72xx_nand_hwcontrol(struct mtd_info *mtd, | |
76 | int cmd, unsigned int ctrl) | |
77 | { | |
78 | struct nand_chip *chip = mtd->priv; | |
79 | ||
80 | if (ctrl & NAND_CTRL_CHANGE) { | |
81 | void __iomem *addr = chip->IO_ADDR_R; | |
82 | unsigned char bits; | |
83 | ||
84 | addr += (1 << TS72XX_NAND_CONTROL_ADDR_LINE); | |
85 | ||
86 | bits = __raw_readb(addr) & ~0x07; | |
87 | bits |= (ctrl & NAND_NCE) << 2; /* bit 0 -> bit 2 */ | |
88 | bits |= (ctrl & NAND_CLE); /* bit 1 -> bit 1 */ | |
89 | bits |= (ctrl & NAND_ALE) >> 2; /* bit 2 -> bit 0 */ | |
90 | ||
91 | __raw_writeb(bits, addr); | |
e7736d47 | 92 | } |
e7736d47 | 93 | |
030d2dd4 HS |
94 | if (cmd != NAND_CMD_NONE) |
95 | __raw_writeb(cmd, chip->IO_ADDR_W); | |
96 | } | |
97 | ||
98 | static int ts72xx_nand_device_ready(struct mtd_info *mtd) | |
99 | { | |
100 | struct nand_chip *chip = mtd->priv; | |
101 | void __iomem *addr = chip->IO_ADDR_R; | |
102 | ||
103 | addr += (1 << TS72XX_NAND_BUSY_ADDR_LINE); | |
104 | ||
105 | return !!(__raw_readb(addr) & 0x20); | |
106 | } | |
107 | ||
030d2dd4 HS |
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 | 118 | .name = "Linux", |
78dd9e35 DB |
119 | .offset = MTDPART_OFS_RETAIN, |
120 | .size = TS72XX_REDBOOT_PART_SIZE, | |
121 | /* leave so much for last partition */ | |
e7736d47 | 122 | }, { |
030d2dd4 HS |
123 | .name = "RedBoot", |
124 | .offset = MTDPART_OFS_APPEND, | |
125 | .size = MTDPART_SIZ_FULL, | |
126 | .mask_flags = MTD_WRITEABLE, /* force read-only */ | |
127 | }, | |
e7736d47 LB |
128 | }; |
129 | ||
030d2dd4 HS |
130 | static struct platform_nand_data ts72xx_nand_data = { |
131 | .chip = { | |
132 | .nr_chips = 1, | |
133 | .chip_offset = 0, | |
134 | .chip_delay = 15, | |
78dd9e35 DB |
135 | .partitions = ts72xx_nand_parts, |
136 | .nr_partitions = ARRAY_SIZE(ts72xx_nand_parts), | |
030d2dd4 HS |
137 | }, |
138 | .ctrl = { | |
139 | .cmd_ctrl = ts72xx_nand_hwcontrol, | |
140 | .dev_ready = ts72xx_nand_device_ready, | |
141 | }, | |
142 | }; | |
143 | ||
144 | static struct resource ts72xx_nand_resource[] = { | |
145 | { | |
146 | .start = 0, /* filled in later */ | |
147 | .end = 0, /* filled in later */ | |
148 | .flags = IORESOURCE_MEM, | |
149 | }, | |
150 | }; | |
151 | ||
152 | static struct platform_device ts72xx_nand_flash = { | |
153 | .name = "gen_nand", | |
154 | .id = -1, | |
155 | .dev.platform_data = &ts72xx_nand_data, | |
156 | .resource = ts72xx_nand_resource, | |
157 | .num_resources = ARRAY_SIZE(ts72xx_nand_resource), | |
158 | }; | |
159 | ||
160 | ||
3174c88a HS |
161 | static void __init ts72xx_register_flash(void) |
162 | { | |
16bcf78f HS |
163 | /* |
164 | * TS7200 has NOR flash all other TS72xx board have NAND flash. | |
165 | */ | |
030d2dd4 | 166 | if (board_is_ts7200()) { |
16bcf78f | 167 | ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_16M); |
030d2dd4 HS |
168 | } else { |
169 | resource_size_t start; | |
170 | ||
171 | if (is_ts9420_installed()) | |
172 | start = EP93XX_CS7_PHYS_BASE; | |
173 | else | |
174 | start = EP93XX_CS6_PHYS_BASE; | |
175 | ||
176 | ts72xx_nand_resource[0].start = start; | |
177 | ts72xx_nand_resource[0].end = start + SZ_16M - 1; | |
178 | ||
179 | platform_device_register(&ts72xx_nand_flash); | |
180 | } | |
3174c88a HS |
181 | } |
182 | ||
030d2dd4 | 183 | |
fd0a0ac1 | 184 | static unsigned char ts72xx_rtc_readbyte(unsigned long addr) |
7ba01f97 LB |
185 | { |
186 | __raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE); | |
187 | return __raw_readb(TS72XX_RTC_DATA_VIRT_BASE); | |
188 | } | |
189 | ||
fd0a0ac1 | 190 | static void ts72xx_rtc_writebyte(unsigned char value, unsigned long addr) |
7ba01f97 LB |
191 | { |
192 | __raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE); | |
193 | __raw_writeb(value, TS72XX_RTC_DATA_VIRT_BASE); | |
194 | } | |
195 | ||
196 | static struct m48t86_ops ts72xx_rtc_ops = { | |
e48f3fa3 HS |
197 | .readbyte = ts72xx_rtc_readbyte, |
198 | .writebyte = ts72xx_rtc_writebyte, | |
7ba01f97 LB |
199 | }; |
200 | ||
201 | static struct platform_device ts72xx_rtc_device = { | |
e48f3fa3 HS |
202 | .name = "rtc-m48t86", |
203 | .id = -1, | |
204 | .dev = { | |
205 | .platform_data = &ts72xx_rtc_ops, | |
7ba01f97 | 206 | }, |
e48f3fa3 | 207 | .num_resources = 0, |
7ba01f97 LB |
208 | }; |
209 | ||
12926dc4 MW |
210 | static struct resource ts72xx_wdt_resources[] = { |
211 | { | |
212 | .start = TS72XX_WDT_CONTROL_PHYS_BASE, | |
213 | .end = TS72XX_WDT_CONTROL_PHYS_BASE + SZ_4K - 1, | |
214 | .flags = IORESOURCE_MEM, | |
215 | }, | |
216 | { | |
217 | .start = TS72XX_WDT_FEED_PHYS_BASE, | |
218 | .end = TS72XX_WDT_FEED_PHYS_BASE + SZ_4K - 1, | |
219 | .flags = IORESOURCE_MEM, | |
220 | }, | |
221 | }; | |
222 | ||
223 | static struct platform_device ts72xx_wdt_device = { | |
224 | .name = "ts72xx-wdt", | |
225 | .id = -1, | |
226 | .num_resources = ARRAY_SIZE(ts72xx_wdt_resources), | |
227 | .resource = ts72xx_wdt_resources, | |
228 | }; | |
229 | ||
b370e082 | 230 | static struct ep93xx_eth_data __initdata ts72xx_eth_data = { |
e48f3fa3 | 231 | .phy_id = 1, |
730ee9f3 LB |
232 | }; |
233 | ||
e7736d47 LB |
234 | static void __init ts72xx_init_machine(void) |
235 | { | |
236 | ep93xx_init_devices(); | |
3174c88a | 237 | ts72xx_register_flash(); |
7ba01f97 | 238 | platform_device_register(&ts72xx_rtc_device); |
12926dc4 | 239 | platform_device_register(&ts72xx_wdt_device); |
730ee9f3 | 240 | |
a0a08fdc | 241 | ep93xx_register_eth(&ts72xx_eth_data, 1); |
e7736d47 LB |
242 | } |
243 | ||
244 | MACHINE_START(TS72XX, "Technologic Systems TS-72xx SBC") | |
245 | /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ | |
e562cf17 | 246 | .atag_offset = 0x100, |
e7736d47 LB |
247 | .map_io = ts72xx_map_io, |
248 | .init_irq = ep93xx_init_irq, | |
9a6879bd | 249 | .handle_irq = vic_handle_irq, |
e7736d47 LB |
250 | .timer = &ep93xx_timer, |
251 | .init_machine = ts72xx_init_machine, | |
c914283f | 252 | .init_late = ep93xx_init_late, |
3275166e | 253 | .restart = ep93xx_restart, |
e7736d47 | 254 | MACHINE_END |