42e0e9723107246a2d5682f5a72e74796aa42e1f
[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 <asm/addrspace.h>
17 #include <bcm63xx_board.h>
18 #include <bcm63xx_cpu.h>
19 #include <bcm63xx_regs.h>
20 #include <bcm63xx_io.h>
21 #include <bcm63xx_board.h>
22 #include <bcm63xx_dev_pci.h>
23 #include <bcm63xx_dev_uart.h>
24 #include <bcm63xx_dev_enet.h>
25 #include <bcm63xx_dev_pcmcia.h>
26 #include <bcm63xx_dev_usb_ohci.h>
27 #include <bcm63xx_dev_usb_ehci.h>
28 #include <board_bcm963xx.h>
29
30 #define PFX "board_bcm963xx: "
31
32 static struct bcm963xx_nvram nvram;
33 static unsigned int mac_addr_used = 0;
34 static struct board_info board;
35
36 /*
37 * known 6348 boards
38 */
39 #ifdef CONFIG_BCM63XX_CPU_6348
40 static struct board_info __initdata board_96348r = {
41 .name = "96348R",
42 .expected_cpu_id = 0x6348,
43
44 .has_enet0 = 1,
45 .has_pci = 1,
46
47 .enet0 = {
48 .has_phy = 1,
49 .use_internal_phy = 1,
50 },
51 };
52
53 static struct board_info __initdata board_96348gw_10 = {
54 .name = "96348GW-10",
55 .expected_cpu_id = 0x6348,
56
57 .has_enet0 = 1,
58 .has_enet1 = 1,
59 .has_pci = 1,
60
61 .enet0 = {
62 .has_phy = 1,
63 .use_internal_phy = 1,
64 },
65 .enet1 = {
66 .force_speed_100 = 1,
67 .force_duplex_full = 1,
68 },
69
70 .has_ohci0 = 1,
71 .has_pccard = 1,
72 .has_ehci0 = 1,
73 };
74
75 static struct board_info __initdata board_96348gw_11 = {
76 .name = "96348GW-11",
77 .expected_cpu_id = 0x6348,
78
79 .has_enet0 = 1,
80 .has_enet1 = 1,
81 .has_pci = 1,
82
83 .enet0 = {
84 .has_phy = 1,
85 .use_internal_phy = 1,
86 },
87
88 .enet1 = {
89 .force_speed_100 = 1,
90 .force_duplex_full = 1,
91 },
92
93
94 .has_ohci0 = 1,
95 .has_pccard = 1,
96 .has_ehci0 = 1,
97 };
98
99 static struct board_info __initdata board_96348gw = {
100 .name = "96348GW",
101 .expected_cpu_id = 0x6348,
102
103 .has_enet0 = 1,
104 .has_enet1 = 1,
105 .has_pci = 1,
106
107 .enet0 = {
108 .has_phy = 1,
109 .use_internal_phy = 1,
110 },
111 .enet1 = {
112 .force_speed_100 = 1,
113 .force_duplex_full = 1,
114 },
115 };
116 #endif
117
118 /*
119 * known 6358 boards
120 */
121 #ifdef CONFIG_BCM63XX_CPU_6358
122 static struct board_info __initdata board_96358vw = {
123 .name = "96358VW",
124 .expected_cpu_id = 0x6358,
125
126 .has_enet0 = 1,
127 .has_enet1 = 1,
128 .has_pci = 1,
129
130 .enet0 = {
131 .has_phy = 1,
132 .use_internal_phy = 1,
133 },
134
135 .enet1 = {
136 .force_speed_100 = 1,
137 .force_duplex_full = 1,
138 },
139
140
141 .has_ohci0 = 1,
142 .has_pccard = 1,
143 .has_ehci0 = 1,
144 };
145
146 static struct board_info __initdata board_96358vw2 = {
147 .name = "96358VW2",
148 .expected_cpu_id = 0x6358,
149
150 .has_enet0 = 1,
151 .has_enet1 = 1,
152 .has_pci = 1,
153
154 .enet0 = {
155 .has_phy = 1,
156 .use_internal_phy = 1,
157 },
158
159 .enet1 = {
160 .force_speed_100 = 1,
161 .force_duplex_full = 1,
162 },
163
164
165 .has_ohci0 = 1,
166 .has_pccard = 1,
167 .has_ehci0 = 1,
168 };
169 #endif
170
171 /*
172 * all boards
173 */
174 static const struct board_info __initdata *bcm963xx_boards[] = {
175 #ifdef CONFIG_BCM63XX_CPU_6348
176 &board_96348r,
177 &board_96348gw,
178 &board_96348gw_10,
179 &board_96348gw_11,
180 #endif
181
182 #ifdef CONFIG_BCM63XX_CPU_6358
183 &board_96358vw,
184 &board_96358vw2,
185 #endif
186 };
187
188 /*
189 * early init callback, read nvram data from flash and checksum it
190 */
191 void __init board_prom_init(void)
192 {
193 unsigned int check_len, i;
194 u8 *boot_addr, *cfe, *p;
195 char cfe_version[32];
196 u32 val;
197
198 /* read base address of boot chip select (0) */
199 val = bcm_mpi_readl(MPI_CSBASE_REG(0));
200 val &= MPI_CSBASE_BASE_MASK;
201 boot_addr = (u8 *)KSEG1ADDR(val);
202
203 /* dump cfe version */
204 cfe = boot_addr + BCM963XX_CFE_VERSION_OFFSET;
205 if (!memcmp(cfe, "cfe-v", 5))
206 snprintf(cfe_version, sizeof(cfe_version), "%u.%u.%u-%u.%u",
207 cfe[5], cfe[6], cfe[7], cfe[8], cfe[9]);
208 else
209 strcpy(cfe_version, "unknown");
210 printk(KERN_INFO PFX "CFE version: %s\n", cfe_version);
211
212 /* extract nvram data */
213 memcpy(&nvram, boot_addr + BCM963XX_NVRAM_OFFSET, sizeof(nvram));
214
215 /* check checksum before using data */
216 if (nvram.version <= 4)
217 check_len = offsetof(struct bcm963xx_nvram, checksum_old);
218 else
219 check_len = sizeof(nvram);
220 val = 0;
221 p = (u8 *)&nvram;
222 while (check_len--)
223 val += *p;
224 if (val) {
225 printk(KERN_ERR PFX "invalid nvram checksum\n");
226 return;
227 }
228
229 /* find board by name */
230 for (i = 0; i < ARRAY_SIZE(bcm963xx_boards); i++) {
231 if (strncmp(nvram.name, bcm963xx_boards[i]->name,
232 sizeof(nvram.name)))
233 continue;
234 /* copy, board desc array is marked initdata */
235 memcpy(&board, bcm963xx_boards[i], sizeof(board));
236 break;
237 }
238
239 /* bail out if board is not found, will complain later */
240 if (!board.name[0]) {
241 char name[17];
242 memcpy(name, nvram.name, 16);
243 name[16] = 0;
244 printk(KERN_ERR PFX "unknown bcm963xx board: %s\n",
245 name);
246 return;
247 }
248
249 /* setup pin multiplexing depending on board enabled device,
250 * this has to be done this early since PCI init is done
251 * inside arch_initcall */
252 val = 0;
253
254 if (board.has_pci) {
255 bcm63xx_pci_enabled = 1;
256 if (BCMCPU_IS_6348())
257 val |= GPIO_MODE_6348_G2_PCI;
258 }
259
260 if (board.has_pccard) {
261 if (BCMCPU_IS_6348())
262 val |= GPIO_MODE_6348_G1_MII_PCCARD;
263 }
264
265 if (board.has_enet0 && !board.enet0.use_internal_phy) {
266 if (BCMCPU_IS_6348())
267 val |= GPIO_MODE_6348_G3_EXT_MII |
268 GPIO_MODE_6348_G0_EXT_MII;
269 }
270
271 if (board.has_enet1 && !board.enet1.use_internal_phy) {
272 if (BCMCPU_IS_6348())
273 val |= GPIO_MODE_6348_G3_EXT_MII |
274 GPIO_MODE_6348_G0_EXT_MII;
275 }
276
277 bcm_gpio_writel(val, GPIO_MODE_REG);
278 }
279
280 /*
281 * second stage init callback, good time to panic if we couldn't
282 * identify on which board we're running since early printk is working
283 */
284 void __init board_setup(void)
285 {
286 if (!board.name[0])
287 panic("unable to detect bcm963xx board");
288 printk(KERN_INFO PFX "board name: %s\n", board.name);
289
290 /* make sure we're running on expected cpu */
291 if (bcm63xx_get_cpu_id() != board.expected_cpu_id)
292 panic("unexpected CPU for bcm963xx board");
293 }
294
295 /*
296 * return board name for /proc/cpuinfo
297 */
298 const char *board_get_name(void)
299 {
300 return board.name;
301 }
302
303 /*
304 * register & return a new board mac address
305 */
306 static int board_get_mac_address(u8 *mac)
307 {
308 u8 *p;
309 int count;
310
311 if (mac_addr_used >= nvram.mac_addr_count) {
312 printk(KERN_ERR PFX "not enough mac address\n");
313 return -ENODEV;
314 }
315
316 memcpy(mac, nvram.mac_addr_base, ETH_ALEN);
317 p = mac + ETH_ALEN - 1;
318 count = mac_addr_used;
319
320 while (count--) {
321 do {
322 (*p)++;
323 if (*p != 0)
324 break;
325 p--;
326 } while (p != mac);
327 }
328
329 if (p == mac) {
330 printk(KERN_ERR PFX "unable to fetch mac address\n");
331 return -ENODEV;
332 }
333
334 mac_addr_used++;
335 return 0;
336 }
337
338 static struct resource mtd_resources[] = {
339 {
340 .start = 0, /* filled at runtime */
341 .end = 0, /* filled at runtime */
342 .flags = IORESOURCE_MEM,
343 }
344 };
345
346 static struct platform_device mtd_dev = {
347 .name = "bcm963xx-flash",
348 .resource = mtd_resources,
349 .num_resources = ARRAY_SIZE(mtd_resources),
350 };
351
352 /*
353 * third stage init callback, register all board devices.
354 */
355 int __init board_register_devices(void)
356 {
357 u32 val;
358
359 bcm63xx_uart_register();
360
361 if (board.has_pccard)
362 bcm63xx_pcmcia_register();
363
364 if (board.has_enet0 &&
365 !board_get_mac_address(board.enet0.mac_addr))
366 bcm63xx_enet_register(0, &board.enet0);
367
368 if (board.has_enet1 &&
369 !board_get_mac_address(board.enet1.mac_addr))
370 bcm63xx_enet_register(1, &board.enet1);
371
372 if (board.has_ohci0)
373 bcm63xx_ohci_register();
374
375 if (board.has_ehci0)
376 bcm63xx_ehci_register();
377
378
379 /* read base address of boot chip select (0) */
380 val = bcm_mpi_readl(MPI_CSBASE_REG(0));
381 val &= MPI_CSBASE_BASE_MASK;
382 mtd_resources[0].start = val;
383 mtd_resources[0].end = 0x1FFFFFFF;
384
385 platform_device_register(&mtd_dev);
386
387 return 0;
388 }
389