[brcm63xx] prevent bcm6338 and bcm6345 from crashing very early
[openwrt/svn-archive/archive.git] / target / linux / brcm63xx / files / arch / mips / bcm63xx / boards / board_bcm963xx.c
1 /*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
7 */
8
9 #include <linux/init.h>
10 #include <linux/kernel.h>
11 #include <linux/string.h>
12 #include <linux/platform_device.h>
13 #include <linux/mtd/mtd.h>
14 #include <linux/mtd/partitions.h>
15 #include <linux/mtd/physmap.h>
16 #include <linux/ssb/ssb.h>
17 #include <asm/addrspace.h>
18 #include <bcm63xx_board.h>
19 #include <bcm63xx_cpu.h>
20 #include <bcm63xx_regs.h>
21 #include <bcm63xx_io.h>
22 #include <bcm63xx_board.h>
23 #include <bcm63xx_dev_pci.h>
24 #include <bcm63xx_dev_uart.h>
25 #include <bcm63xx_dev_wdt.h>
26 #include <bcm63xx_dev_enet.h>
27 #include <bcm63xx_dev_pcmcia.h>
28 #include <bcm63xx_dev_usb_ohci.h>
29 #include <bcm63xx_dev_usb_ehci.h>
30 #include <bcm63xx_dev_usb_udc.h>
31 #include <bcm63xx_dev_spi.h>
32 #include <board_bcm963xx.h>
33
34 #define PFX "board_bcm963xx: "
35
36 static struct bcm963xx_nvram nvram;
37 static unsigned int mac_addr_used = 0;
38 static struct board_info board;
39
40 /*
41 * known 6338 boards
42 */
43
44 #ifdef CONFIG_BCM63XX_CPU_6338
45 static struct board_info __initdata board_96338gw = {
46 .name = "96338GW",
47 .expected_cpu_id = 0x6338,
48
49 .has_enet0 = 1,
50 .enet0 = {
51 .has_phy = 1,
52 .use_internal_phy = 1,
53 },
54
55 .has_ohci0 = 1,
56 };
57
58 static struct board_info __initdata board_96338w = {
59 .name = "9338W",
60 .expected_cpu_id = 0x6338,
61
62 .has_enet0 = 1,
63 };
64 #endif
65
66 /*
67 * known 6348 boards
68 */
69 #ifdef CONFIG_BCM63XX_CPU_6348
70 static struct board_info __initdata board_96348r = {
71 .name = "96348R",
72 .expected_cpu_id = 0x6348,
73
74 .has_enet0 = 1,
75 .has_pci = 1,
76
77 .enet0 = {
78 .has_phy = 1,
79 .use_internal_phy = 1,
80 },
81 };
82
83 static struct board_info __initdata board_96348gw_10 = {
84 .name = "96348GW-10",
85 .expected_cpu_id = 0x6348,
86
87 .has_enet0 = 1,
88 .has_enet1 = 1,
89 .has_pci = 1,
90
91 .enet0 = {
92 .has_phy = 1,
93 .use_internal_phy = 1,
94 },
95 .enet1 = {
96 .force_speed_100 = 1,
97 .force_duplex_full = 1,
98 },
99
100 .has_ohci0 = 1,
101 .has_pccard = 1,
102 .has_ehci0 = 1,
103 };
104
105 static struct board_info __initdata board_96348gw_11 = {
106 .name = "96348GW-11",
107 .expected_cpu_id = 0x6348,
108
109 .has_enet0 = 1,
110 .has_enet1 = 1,
111 .has_pci = 1,
112
113 .enet0 = {
114 .has_phy = 1,
115 .use_internal_phy = 1,
116 },
117
118 .enet1 = {
119 .force_speed_100 = 1,
120 .force_duplex_full = 1,
121 },
122
123
124 .has_ohci0 = 1,
125 .has_pccard = 1,
126 .has_ehci0 = 1,
127 };
128
129 static struct board_info __initdata board_96348gw = {
130 .name = "96348GW",
131 .expected_cpu_id = 0x6348,
132
133 .has_enet0 = 1,
134 .has_enet1 = 1,
135 .has_pci = 1,
136
137 .enet0 = {
138 .has_phy = 1,
139 .use_internal_phy = 1,
140 },
141 .enet1 = {
142 .force_speed_100 = 1,
143 .force_duplex_full = 1,
144 },
145
146 .has_ohci0 = 1,
147 };
148
149 static struct board_info __initdata board_FAST2404 = {
150 .name = "F@ST2404",
151 .expected_cpu_id = 0x6348,
152
153 .has_enet0 = 1,
154 .has_enet1 = 1,
155 .has_pci = 1,
156
157 .enet0 = {
158 .has_phy = 1,
159 .use_internal_phy = 1,
160 },
161
162 .enet1 = {
163 .force_speed_100 = 1,
164 .force_duplex_full = 1,
165 },
166
167
168 .has_ohci0 = 1,
169 .has_pccard = 1,
170 .has_ehci0 = 1,
171 };
172
173 static struct board_info __initdata board_DV201AMR = {
174 .name = "DV201AMR",
175 .expected_cpu_id = 0x6348,
176
177 .has_pci = 1,
178 .has_ohci0 = 1,
179 .has_udc0 = 1,
180
181 .has_enet0 = 1,
182 .has_enet1 = 1,
183 .enet0 = {
184 .has_phy = 1,
185 .use_internal_phy = 1,
186 },
187 .enet1 = {
188 .force_speed_100 = 1,
189 .force_duplex_full = 1,
190 },
191 };
192
193 static struct board_info __initdata board_96348gw_a = {
194 .name = "96348GW-A",
195 .expected_cpu_id = 0x6348,
196
197 .has_enet0 = 1,
198 .has_enet1 = 1,
199 .has_pci = 1,
200
201 .enet0 = {
202 .has_phy = 1,
203 .use_internal_phy = 1,
204 },
205 .enet1 = {
206 .force_speed_100 = 1,
207 .force_duplex_full = 1,
208 },
209
210 .has_ohci0 = 1,
211 };
212
213
214 #endif
215
216 /*
217 * known 6358 boards
218 */
219 #ifdef CONFIG_BCM63XX_CPU_6358
220 static struct board_info __initdata board_96358vw = {
221 .name = "96358VW",
222 .expected_cpu_id = 0x6358,
223
224 .has_enet0 = 1,
225 .has_enet1 = 1,
226 .has_pci = 1,
227
228 .enet0 = {
229 .has_phy = 1,
230 .use_internal_phy = 1,
231 },
232
233 .enet1 = {
234 .force_speed_100 = 1,
235 .force_duplex_full = 1,
236 },
237
238
239 .has_ohci0 = 1,
240 .has_pccard = 1,
241 .has_ehci0 = 1,
242 };
243
244 static struct board_info __initdata board_96358vw2 = {
245 .name = "96358VW2",
246 .expected_cpu_id = 0x6358,
247
248 .has_enet0 = 1,
249 .has_enet1 = 1,
250 .has_pci = 1,
251
252 .enet0 = {
253 .has_phy = 1,
254 .use_internal_phy = 1,
255 },
256
257 .enet1 = {
258 .force_speed_100 = 1,
259 .force_duplex_full = 1,
260 },
261
262
263 .has_ohci0 = 1,
264 .has_pccard = 1,
265 .has_ehci0 = 1,
266 };
267
268 static struct board_info __initdata board_AGPFS0 = {
269 .name = "AGPF-S0",
270 .expected_cpu_id = 0x6358,
271
272 .has_enet0 = 1,
273 .has_enet1 = 1,
274 .has_pci = 1,
275
276 .enet0 = {
277 .has_phy = 1,
278 .use_internal_phy = 1,
279 },
280
281 .enet1 = {
282 .force_speed_100 = 1,
283 .force_duplex_full = 1,
284 },
285
286 .has_ohci0 = 1,
287 .has_ehci0 = 1,
288 };
289 #endif
290
291 /*
292 * all boards
293 */
294 static const struct board_info __initdata *bcm963xx_boards[] = {
295 #ifdef CONFIG_BCM63XX_CPU_6338
296 &board_96338gw,
297 &board_96338w,
298 #endif
299 #ifdef CONFIG_BCM63XX_CPU_6348
300 &board_96348r,
301 &board_96348gw,
302 &board_96348gw_10,
303 &board_96348gw_11,
304 &board_FAST2404,
305 &board_DV201AMR,
306 &board_96348gw_a,
307 #endif
308
309 #ifdef CONFIG_BCM63XX_CPU_6358
310 &board_96358vw,
311 &board_96358vw2,
312 &board_AGPFS0,
313 #endif
314 };
315
316 /*
317 * early init callback, read nvram data from flash and checksum it
318 */
319 void __init board_prom_init(void)
320 {
321 unsigned int check_len, i;
322 u8 *boot_addr, *cfe, *p;
323 char cfe_version[32];
324 u32 val;
325
326 /* read base address of boot chip select (0)
327 * 6338 does not have MPI but boots from standard
328 * MIPS Flash address */
329 if (BCMCPU_IS_6338() || BCMCPU_IS_6345())
330 val = 0x1fc00000;
331 else {
332 val = bcm_mpi_readl(MPI_CSBASE_REG(0));
333 val &= MPI_CSBASE_BASE_MASK;
334 }
335 boot_addr = (u8 *)KSEG1ADDR(val);
336
337 /* dump cfe version */
338 cfe = boot_addr + BCM963XX_CFE_VERSION_OFFSET;
339 if (!memcmp(cfe, "cfe-v", 5))
340 snprintf(cfe_version, sizeof(cfe_version), "%u.%u.%u-%u.%u",
341 cfe[5], cfe[6], cfe[7], cfe[8], cfe[9]);
342 else
343 strcpy(cfe_version, "unknown");
344 printk(KERN_INFO PFX "CFE version: %s\n", cfe_version);
345
346 /* extract nvram data */
347 memcpy(&nvram, boot_addr + BCM963XX_NVRAM_OFFSET, sizeof(nvram));
348
349 /* check checksum before using data */
350 if (nvram.version <= 4)
351 check_len = offsetof(struct bcm963xx_nvram, checksum_old);
352 else
353 check_len = sizeof(nvram);
354 val = 0;
355 p = (u8 *)&nvram;
356 while (check_len--)
357 val += *p;
358 if (val) {
359 printk(KERN_ERR PFX "invalid nvram checksum\n");
360 return;
361 }
362
363 /* find board by name */
364 for (i = 0; i < ARRAY_SIZE(bcm963xx_boards); i++) {
365 if (strncmp(nvram.name, bcm963xx_boards[i]->name,
366 sizeof(nvram.name)))
367 continue;
368 /* copy, board desc array is marked initdata */
369 memcpy(&board, bcm963xx_boards[i], sizeof(board));
370 break;
371 }
372
373 /* bail out if board is not found, will complain later */
374 if (!board.name[0]) {
375 char name[17];
376 memcpy(name, nvram.name, 16);
377 name[16] = 0;
378 printk(KERN_ERR PFX "unknown bcm963xx board: %s\n",
379 name);
380 return;
381 }
382
383 /* setup pin multiplexing depending on board enabled device,
384 * this has to be done this early since PCI init is done
385 * inside arch_initcall */
386 val = 0;
387 #ifdef CONFIG_PCI
388 if (board.has_pci) {
389 bcm63xx_pci_enabled = 1;
390 if (BCMCPU_IS_6348())
391 val |= GPIO_MODE_6348_G2_PCI;
392 }
393 #endif
394 if (board.has_pccard) {
395 if (BCMCPU_IS_6348())
396 val |= GPIO_MODE_6348_G1_MII_PCCARD;
397 }
398
399 if (board.has_enet0 && !board.enet0.use_internal_phy) {
400 if (BCMCPU_IS_6348())
401 val |= GPIO_MODE_6348_G3_EXT_MII |
402 GPIO_MODE_6348_G0_EXT_MII;
403 }
404
405 if (board.has_enet1 && !board.enet1.use_internal_phy) {
406 if (BCMCPU_IS_6348())
407 val |= GPIO_MODE_6348_G3_EXT_MII |
408 GPIO_MODE_6348_G0_EXT_MII;
409 }
410
411 bcm_gpio_writel(val, GPIO_MODE_REG);
412 }
413
414 /*
415 * second stage init callback, good time to panic if we couldn't
416 * identify on which board we're running since early printk is working
417 */
418 void __init board_setup(void)
419 {
420 if (!board.name[0])
421 panic("unable to detect bcm963xx board");
422 printk(KERN_INFO PFX "board name: %s\n", board.name);
423
424 /* make sure we're running on expected cpu */
425 if (bcm63xx_get_cpu_id() != board.expected_cpu_id)
426 panic("unexpected CPU for bcm963xx board");
427 }
428
429 /*
430 * return board name for /proc/cpuinfo
431 */
432 const char *board_get_name(void)
433 {
434 return board.name;
435 }
436
437 /*
438 * register & return a new board mac address
439 */
440 static int board_get_mac_address(u8 *mac)
441 {
442 u8 *p;
443 int count;
444
445 if (mac_addr_used >= nvram.mac_addr_count) {
446 printk(KERN_ERR PFX "not enough mac address\n");
447 return -ENODEV;
448 }
449
450 memcpy(mac, nvram.mac_addr_base, ETH_ALEN);
451 p = mac + ETH_ALEN - 1;
452 count = mac_addr_used;
453
454 while (count--) {
455 do {
456 (*p)++;
457 if (*p != 0)
458 break;
459 p--;
460 } while (p != mac);
461 }
462
463 if (p == mac) {
464 printk(KERN_ERR PFX "unable to fetch mac address\n");
465 return -ENODEV;
466 }
467
468 mac_addr_used++;
469 return 0;
470 }
471
472 static struct resource mtd_resources[] = {
473 {
474 .start = 0, /* filled at runtime */
475 .end = 0, /* filled at runtime */
476 .flags = IORESOURCE_MEM,
477 }
478 };
479
480 static struct platform_device mtd_dev = {
481 .name = "bcm963xx-flash",
482 .resource = mtd_resources,
483 .num_resources = ARRAY_SIZE(mtd_resources),
484 };
485
486 /*
487 * Register a sane SPROMv2 to make the on-board
488 * bcm4318 WLAN work
489 */
490 static struct ssb_sprom bcm63xx_sprom = {
491 .revision = 0x02,
492 .board_rev = 0x17,
493 .country_code = 0x0,
494 .ant_available_bg = 0x3,
495 .pa0b0 = 0x15ae,
496 .pa0b1 = 0xfa85,
497 .pa0b2 = 0xfe8d,
498 .pa1b0 = 0xffff,
499 .pa1b1 = 0xffff,
500 .pa1b2 = 0xffff,
501 .gpio0 = 0xff,
502 .gpio1 = 0xff,
503 .gpio2 = 0xff,
504 .gpio3 = 0xff,
505 .maxpwr_bg = 0x004c,
506 .itssi_bg = 0x00,
507 .boardflags_lo = 0x2848,
508 .boardflags_hi = 0x0000,
509 };
510
511 static struct resource gpiodev_resource = {
512 .start = 0xFFFFFFFF,
513 };
514
515 /*
516 * third stage init callback, register all board devices.
517 */
518 int __init board_register_devices(void)
519 {
520 u32 val;
521
522 bcm63xx_uart_register();
523 bcm63xx_wdt_register();
524 bcm63xx_spi_register();
525
526 if (board.has_pccard)
527 bcm63xx_pcmcia_register();
528
529 if (board.has_enet0 &&
530 !board_get_mac_address(board.enet0.mac_addr))
531 bcm63xx_enet_register(0, &board.enet0);
532
533 if (board.has_enet1 &&
534 !board_get_mac_address(board.enet1.mac_addr))
535 bcm63xx_enet_register(1, &board.enet1);
536
537 if (board.has_ohci0)
538 bcm63xx_ohci_register();
539
540 if (board.has_ehci0)
541 bcm63xx_ehci_register();
542
543 if (board.has_udc0)
544 bcm63xx_udc_register();
545 /* Generate MAC address for WLAN and
546 * register our SPROM */
547 #ifdef CONFIG_PCI
548 if (!board_get_mac_address(bcm63xx_sprom.il0mac)) {
549 memcpy(bcm63xx_sprom.et0mac, bcm63xx_sprom.il0mac, ETH_ALEN);
550 memcpy(bcm63xx_sprom.et1mac, bcm63xx_sprom.il0mac, ETH_ALEN);
551 if (ssb_arch_set_fallback_sprom(&bcm63xx_sprom) < 0)
552 printk(KERN_ERR "failed to register fallback SPROM\n");
553 }
554 #endif
555
556 /* read base address of boot chip select (0) */
557 val = bcm_mpi_readl(MPI_CSBASE_REG(0));
558 val &= MPI_CSBASE_BASE_MASK;
559 mtd_resources[0].start = val;
560 mtd_resources[0].end = 0x1FFFFFFF;
561
562 platform_device_register(&mtd_dev);
563
564 /* Register GPIODEV */
565 platform_device_register_simple("GPIODEV", 0, &gpiodev_resource, 1);
566
567 return 0;
568 }
569