[ifxmips] Make it possible for boards to disable PCI REQ signals in the PCI controlle...
[openwrt/svn-archive/archive.git] / target / linux / ifxmips / files / arch / mips / ifxmips / board.c
1 /*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
15 *
16 * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
17 */
18
19 #include <linux/autoconf.h>
20 #include <linux/init.h>
21 #include <linux/module.h>
22 #include <linux/types.h>
23 #include <linux/string.h>
24 #include <linux/mtd/physmap.h>
25 #include <linux/kernel.h>
26 #include <linux/reboot.h>
27 #include <linux/platform_device.h>
28 #include <linux/leds.h>
29 #include <linux/etherdevice.h>
30 #include <linux/reboot.h>
31 #include <linux/time.h>
32 #include <linux/io.h>
33 #include <linux/gpio.h>
34
35 #include <asm/bootinfo.h>
36 #include <asm/irq.h>
37
38 #include <ifxmips.h>
39 #include <ifxmips_irq.h>
40
41 #define MAX_BOARD_NAME_LEN 32
42 #define MAX_IFXMIPS_DEVS 9
43
44 #define SYSTEM_DANUBE "Danube"
45 #define SYSTEM_DANUBE_CHIPID1 0x00129083
46 #define SYSTEM_DANUBE_CHIPID2 0x0012B083
47
48 #define SYSTEM_TWINPASS "Twinpass"
49 #define SYSTEM_TWINPASS_CHIPID 0x0012D083
50
51 enum {
52 EASY50712,
53 EASY4010,
54 ARV4519,
55 };
56
57 extern int ifxmips_pci_external_clock;
58 extern int ifxmips_pci_req_mask;
59
60 static unsigned int chiprev;
61 static int cmdline_mac;
62 char board_name[MAX_BOARD_NAME_LEN + 1] = { 0 };
63
64 struct ifxmips_board {
65 int type;
66 char name[32];
67 unsigned int system_type;
68 struct platform_device **devs;
69 struct resource reset_resource;
70 struct resource gpiodev_resource;
71 struct gpio_led *ifxmips_leds;
72 struct gpio_led *gpio_leds;
73 int pci_external_clock;
74 int pci_req_mask;
75 int num_devs;
76 };
77
78 DEFINE_SPINLOCK(ebu_lock);
79 EXPORT_SYMBOL_GPL(ebu_lock);
80
81 static unsigned char ifxmips_ethaddr[6];
82 static int ifxmips_brn;
83
84 static struct gpio_led_platform_data ifxmips_led_data;
85
86 static struct platform_device ifxmips_led = {
87 .id = 0,
88 .name = "ifxmips_led",
89 .dev = {
90 .platform_data = (void *) &ifxmips_led_data,
91 }
92 };
93
94 static struct platform_device ifxmips_gpio = {
95 .id = 0,
96 .name = "ifxmips_gpio",
97 .num_resources = 1,
98 };
99
100 static struct platform_device ifxmips_mii = {
101 .id = 0,
102 .name = "ifxmips_mii0",
103 .dev = {
104 .platform_data = ifxmips_ethaddr,
105 }
106 };
107
108 static struct platform_device ifxmips_wdt = {
109 .id = 0,
110 .name = "ifxmips_wdt",
111 };
112
113 static struct resource ifxmips_mtd_resource = {
114 .start = IFXMIPS_FLASH_START,
115 .end = IFXMIPS_FLASH_START + IFXMIPS_FLASH_MAX - 1,
116 .flags = IORESOURCE_MEM,
117 };
118
119 static struct platform_device ifxmips_mtd = {
120 .id = 0,
121 .name = "ifxmips_mtd",
122 .num_resources = 1,
123 .resource = &ifxmips_mtd_resource,
124 };
125
126 static struct platform_device ifxmips_gpio_dev = {
127 .name = "GPIODEV",
128 .id = -1,
129 .num_resources = 1,
130 };
131
132 #ifdef CONFIG_LEDS_GPIO
133 static struct gpio_led arv4519_gpio_leds[] = {
134 { .name = "ifx:green:power", .gpio = 3, .active_low = 1, },
135 { .name = "ifx:red:power", .gpio = 7, .active_low = 1, },
136 { .name = "ifx:green:adsl", .gpio = 4, .active_low = 1, },
137 { .name = "ifx:green:internet", .gpio = 5, .active_low = 1, },
138 { .name = "ifx:red:internet", .gpio = 8, .active_low = 1, },
139 { .name = "ifx:green:wlan", .gpio = 6, .active_low = 1, },
140 { .name = "ifx:green:usbpwr", .gpio = 14, .active_low = 1, },
141 { .name = "ifx:green:usb", .gpio = 19, .active_low = 1, },
142 };
143
144 static struct gpio_led_platform_data ifxmips_gpio_led_data;
145
146 static struct platform_device ifxmips_gpio_leds = {
147 .name = "leds-gpio",
148 .id = -1,
149 .dev = {
150 .platform_data = (void *) &ifxmips_gpio_led_data,
151 }
152 };
153 #endif
154
155 static struct resource dwc_usb_res[] = {
156 {
157 .name = "dwc_usb_membase",
158 .flags = IORESOURCE_MEM,
159 .start = 0x1E101000,
160 .end = 0x1E101FFF
161 },
162 {
163 .name = "dwc_usb_irq",
164 .flags = IORESOURCE_IRQ,
165 .start = IFXMIPS_USB_INT,
166 }
167 };
168
169 static struct platform_device dwc_usb =
170 {
171 .id = 0,
172 .name = "dwc_usb",
173 .resource = dwc_usb_res,
174 .num_resources = ARRAY_SIZE(dwc_usb_res),
175 };
176
177 struct platform_device *easy50712_devs[] = {
178 &ifxmips_led, &ifxmips_gpio, &ifxmips_mii,
179 &ifxmips_mtd, &ifxmips_wdt, &ifxmips_gpio_dev, &dwc_usb
180 };
181
182 struct platform_device *easy4010_devs[] = {
183 &ifxmips_led, &ifxmips_gpio, &ifxmips_mii,
184 &ifxmips_mtd, &ifxmips_wdt, &ifxmips_gpio_dev, &dwc_usb
185 };
186
187 struct platform_device *arv5419_devs[] = {
188 &ifxmips_gpio, &ifxmips_mii, &ifxmips_mtd,
189 &ifxmips_gpio_dev, &ifxmips_wdt, &dwc_usb,
190 #ifdef CONFIG_LEDS_GPIO
191 &ifxmips_gpio_leds,
192 #endif
193 };
194
195 static struct gpio_led easy50712_leds[] = {
196 { .name = "ifx:green:test0", .gpio = 0,},
197 { .name = "ifx:green:test1", .gpio = 1,},
198 { .name = "ifx:green:test2", .gpio = 2,},
199 { .name = "ifx:green:test3", .gpio = 3,},
200 };
201
202 static struct gpio_led easy4010_leds[] = {
203 { .name = "ifx:green:test0", .gpio = 0,},
204 { .name = "ifx:green:test1", .gpio = 1,},
205 { .name = "ifx:green:test2", .gpio = 2,},
206 { .name = "ifx:green:test3", .gpio = 3,},
207 };
208
209 static struct ifxmips_board boards[] = {
210 {
211 /* infineon eval kit */
212 .type = EASY50712,
213 .name = "EASY50712",
214 .system_type = SYSTEM_DANUBE_CHIPID1,
215 .devs = easy50712_devs,
216 .reset_resource = {.name = "reset", .start = 1, .end = 15,},
217 .gpiodev_resource = { .name = "gpio",
218 .start = (1 << 0) | (1 << 1),
219 .end = (1 << 0) | (1 << 1)},
220 .ifxmips_leds = easy50712_leds,
221 }, {
222 /* infineon eval kit */
223 .type = EASY4010,
224 .name = "EASY4010",
225 .system_type = SYSTEM_TWINPASS_CHIPID,
226 .devs = easy4010_devs,
227 .reset_resource = {.name = "reset", .start = 1, .end = 15},
228 .gpiodev_resource = { .name = "gpio",
229 .start = (1 << 0) | (1 << 1),
230 .end = (1 << 0) | (1 << 1)},
231 .ifxmips_leds = easy4010_leds,
232 }, {
233 /* arcaydian annex-a board used by thompson, airties, ... */
234 .type = ARV4519,
235 .name = "ARV4519",
236 .system_type = SYSTEM_DANUBE_CHIPID2,
237 .devs = arv5419_devs,
238 .reset_resource = {.name = "reset", .start = 1, .end = 14},
239 .pci_external_clock = 1,
240 .gpio_leds = arv4519_gpio_leds,
241 },
242 };
243
244 const char *get_system_type(void)
245 {
246 chiprev = (ifxmips_r32(IFXMIPS_MPS_CHIPID) & 0x0FFFFFFF);
247
248 switch (chiprev) {
249 case SYSTEM_DANUBE_CHIPID1:
250 case SYSTEM_DANUBE_CHIPID2:
251 return SYSTEM_DANUBE;
252
253 case SYSTEM_TWINPASS_CHIPID:
254 return SYSTEM_TWINPASS;
255 }
256
257 return BOARD_SYSTEM_TYPE;
258 }
259
260 static int __init ifxmips_set_board_type(char *str)
261 {
262 str = strchr(str, '=');
263 if (!str)
264 goto out;
265 str++;
266 if (strlen(str) > MAX_BOARD_NAME_LEN)
267 goto out;
268 strncpy(board_name, str, MAX_BOARD_NAME_LEN);
269 printk(KERN_INFO "bootloader told us, that this is a %s board\n",
270 board_name);
271 out:
272 return 1;
273 }
274 __setup("ifxmips_board", ifxmips_set_board_type);
275
276 static int __init ifxmips_set_ethaddr(char *str)
277 {
278 #define IS_HEX(x) \
279 (((x >= '0' && x <= '9') || (x >= 'a' && x <= 'f') \
280 || (x >= 'A' && x <= 'F')) ? (1) : (0))
281 int i;
282 str = strchr(str, '=');
283 if (!str)
284 goto out;
285 str++;
286 if (strlen(str) != 17)
287 goto out;
288 for (i = 0; i < 6; i++) {
289 if (!IS_HEX(str[3 * i]) || !IS_HEX(str[(3 * i) + 1]))
290 goto out;
291 if ((i != 5) && (str[(3 * i) + 2] != ':'))
292 goto out;
293 ifxmips_ethaddr[i] = simple_strtoul(&str[3 * i], NULL, 16);
294 }
295 if (is_valid_ether_addr(ifxmips_ethaddr))
296 cmdline_mac = 1;
297 out:
298 return 1;
299 }
300 __setup("ethaddr", ifxmips_set_ethaddr);
301
302 int ifxmips_find_brn_block(void)
303 {
304 unsigned char temp[8];
305 memcpy_fromio(temp,
306 (void *)KSEG1ADDR(IFXMIPS_FLASH_START + 0x800000 - 0x10000), 8);
307 if (memcmp(temp, "BRN-BOOT", 8) == 0) {
308 if (!cmdline_mac)
309 memcpy_fromio(ifxmips_ethaddr,
310 (void *)KSEG1ADDR(IFXMIPS_FLASH_START +
311 0x800000 - 0x10000 + 0x16), 6);
312 if (is_valid_ether_addr(ifxmips_ethaddr))
313 cmdline_mac = 1;
314 return 1;
315 } else {
316 return 0;
317 }
318 }
319
320 int ifxmips_has_brn_block(void)
321 {
322 return ifxmips_brn;
323 }
324 EXPORT_SYMBOL(ifxmips_has_brn_block);
325
326 struct ifxmips_board *ifxmips_find_board(void)
327 {
328 int i;
329 if (!*board_name)
330 return 0;
331 for (i = 0; i < ARRAY_SIZE(boards); i++)
332 if ((boards[i].system_type == chiprev) &&
333 (!strcmp(boards[i].name, board_name)))
334 return &boards[i];
335 return 0;
336 }
337
338 int __init ifxmips_init_devices(void)
339 {
340 struct ifxmips_board *board = ifxmips_find_board();
341
342 chiprev = (ifxmips_r32(IFXMIPS_MPS_CHIPID) & 0x0FFFFFFF);
343 ifxmips_brn = ifxmips_find_brn_block();
344
345 if (!cmdline_mac)
346 random_ether_addr(ifxmips_ethaddr);
347
348 if (!board) {
349 switch (chiprev) {
350 case SYSTEM_DANUBE_CHIPID1:
351 case SYSTEM_DANUBE_CHIPID2:
352 default:
353 board = &boards[0];
354 break;
355 case SYSTEM_TWINPASS_CHIPID:
356 board = &boards[1];
357 break;
358 }
359 }
360
361 switch (board->type) {
362 case EASY50712:
363 board->num_devs = ARRAY_SIZE(easy50712_devs);
364 ifxmips_led_data.num_leds = ARRAY_SIZE(easy50712_leds);
365 break;
366 case EASY4010:
367 board->num_devs = ARRAY_SIZE(easy4010_devs);
368 ifxmips_led_data.num_leds = ARRAY_SIZE(easy4010_leds);
369 break;
370 case ARV4519:
371 /* set some sane defaults for the gpios */
372 gpio_set_value(3, 0);
373 gpio_set_value(4, 0);
374 gpio_set_value(5, 0);
375 gpio_set_value(6, 0);
376 gpio_set_value(7, 1);
377 gpio_set_value(8, 1);
378 gpio_set_value(19, 0);
379 board->num_devs = ARRAY_SIZE(arv5419_devs);
380 #ifdef CONFIG_LEDS_GPIO
381 ifxmips_gpio_led_data.num_leds = ARRAY_SIZE(arv4519_gpio_leds);
382 #endif
383 break;
384 }
385 #ifdef CONFIG_LEDS_GPIO
386 ifxmips_gpio_led_data.leds = board->gpio_leds;
387 #endif
388 ifxmips_led_data.leds = board->ifxmips_leds;
389
390 printk(KERN_INFO "%s: adding %d devs\n",
391 __func__, board->num_devs);
392
393 ifxmips_gpio.resource = &board->reset_resource;
394 ifxmips_gpio_dev.resource = &board->gpiodev_resource;
395 if (board->pci_external_clock)
396 ifxmips_pci_external_clock = 1;
397 if (board->pci_req_mask)
398 ifxmips_pci_req_mask = board->pci_req_mask;
399 printk(KERN_INFO "using board definition %s\n", board->name);
400 return platform_add_devices(board->devs, board->num_devs);
401 }
402
403 arch_initcall(ifxmips_init_devices);