Commit | Line | Data |
---|---|---|
1f21d2bd BM |
1 | /* |
2 | * Thomas Horsten <thh@lasat.com> | |
3 | * Copyright (C) 2000 LASAT Networks A/S. | |
4 | * | |
5 | * This program is free software; you can distribute it and/or modify it | |
6 | * under the terms of the GNU General Public License (Version 2) as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 | * for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along | |
15 | * with this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. | |
17 | * | |
18 | * Routines specific to the LASAT boards | |
19 | */ | |
20 | #include <linux/types.h> | |
21 | #include <linux/crc32.h> | |
22 | #include <asm/lasat/lasat.h> | |
23 | #include <linux/kernel.h> | |
24 | #include <linux/string.h> | |
25 | #include <linux/ctype.h> | |
1f34f2e4 | 26 | #include <linux/mutex.h> |
1f21d2bd BM |
27 | #include <asm/bootinfo.h> |
28 | #include <asm/addrspace.h> | |
29 | #include "at93c.h" | |
30 | /* New model description table */ | |
31 | #include "lasat_models.h" | |
32 | ||
1f34f2e4 TH |
33 | static DEFINE_MUTEX(lasat_eeprom_mutex); |
34 | ||
1f21d2bd BM |
35 | #define EEPROM_CRC(data, len) (~crc32(~0, data, len)) |
36 | ||
37 | struct lasat_info lasat_board_info; | |
38 | ||
1f21d2bd BM |
39 | int EEPROMRead(unsigned int pos, unsigned char *data, int len) |
40 | { | |
41 | int i; | |
42 | ||
43 | for (i = 0; i < len; i++) | |
44 | *data++ = at93c_read(pos++); | |
45 | ||
46 | return 0; | |
47 | } | |
48 | ||
49 | int EEPROMWrite(unsigned int pos, unsigned char *data, int len) | |
50 | { | |
51 | int i; | |
52 | ||
53 | for (i = 0; i < len; i++) | |
54 | at93c_write(pos++, *data++); | |
55 | ||
56 | return 0; | |
57 | } | |
58 | ||
59 | static void init_flash_sizes(void) | |
60 | { | |
61 | unsigned long *lb = lasat_board_info.li_flashpart_base; | |
62 | unsigned long *ls = lasat_board_info.li_flashpart_size; | |
63 | int i; | |
64 | ||
65 | ls[LASAT_MTD_BOOTLOADER] = 0x40000; | |
66 | ls[LASAT_MTD_SERVICE] = 0xC0000; | |
67 | ls[LASAT_MTD_NORMAL] = 0x100000; | |
68 | ||
69 | if (mips_machtype == MACH_LASAT_100) { | |
70 | lasat_board_info.li_flash_base = 0x1e000000; | |
71 | ||
72 | lb[LASAT_MTD_BOOTLOADER] = 0x1e400000; | |
73 | ||
74 | if (lasat_board_info.li_flash_size > 0x200000) { | |
75 | ls[LASAT_MTD_CONFIG] = 0x100000; | |
76 | ls[LASAT_MTD_FS] = 0x500000; | |
77 | } | |
78 | } else { | |
79 | lasat_board_info.li_flash_base = 0x10000000; | |
80 | ||
81 | if (lasat_board_info.li_flash_size < 0x1000000) { | |
82 | lb[LASAT_MTD_BOOTLOADER] = 0x10000000; | |
83 | ls[LASAT_MTD_CONFIG] = 0x100000; | |
84 | if (lasat_board_info.li_flash_size >= 0x400000) | |
85 | ls[LASAT_MTD_FS] = | |
86 | lasat_board_info.li_flash_size - 0x300000; | |
87 | } | |
88 | } | |
89 | ||
90 | for (i = 1; i < LASAT_MTD_LAST; i++) | |
91 | lb[i] = lb[i-1] + ls[i-1]; | |
92 | } | |
93 | ||
94 | int lasat_init_board_info(void) | |
95 | { | |
96 | int c; | |
97 | unsigned long crc; | |
98 | unsigned long cfg0, cfg1; | |
99 | const struct product_info *ppi; | |
100 | int i_n_base_models = N_BASE_MODELS; | |
101 | const char * const * i_txt_base_models = txt_base_models; | |
102 | int i_n_prids = N_PRIDS; | |
103 | ||
104 | memset(&lasat_board_info, 0, sizeof(lasat_board_info)); | |
105 | ||
106 | /* First read the EEPROM info */ | |
107 | EEPROMRead(0, (unsigned char *)&lasat_board_info.li_eeprom_info, | |
108 | sizeof(struct lasat_eeprom_struct)); | |
109 | ||
110 | /* Check the CRC */ | |
111 | crc = EEPROM_CRC((unsigned char *)(&lasat_board_info.li_eeprom_info), | |
112 | sizeof(struct lasat_eeprom_struct) - 4); | |
113 | ||
114 | if (crc != lasat_board_info.li_eeprom_info.crc32) { | |
115 | printk(KERN_WARNING "WARNING...\nWARNING...\nEEPROM CRC does " | |
116 | "not match calculated, attempting to soldier on...\n"); | |
117 | } | |
118 | ||
119 | if (lasat_board_info.li_eeprom_info.version != LASAT_EEPROM_VERSION) { | |
120 | printk(KERN_WARNING "WARNING...\nWARNING...\nEEPROM version " | |
121 | "%d, wanted version %d, attempting to soldier on...\n", | |
122 | (unsigned int)lasat_board_info.li_eeprom_info.version, | |
123 | LASAT_EEPROM_VERSION); | |
124 | } | |
125 | ||
126 | cfg0 = lasat_board_info.li_eeprom_info.cfg[0]; | |
127 | cfg1 = lasat_board_info.li_eeprom_info.cfg[1]; | |
128 | ||
129 | if (LASAT_W0_DSCTYPE(cfg0) != 1) { | |
130 | printk(KERN_WARNING "WARNING...\nWARNING...\n" | |
131 | "Invalid configuration read from EEPROM, attempting to " | |
132 | "soldier on..."); | |
133 | } | |
134 | /* We have a valid configuration */ | |
135 | ||
136 | switch (LASAT_W0_SDRAMBANKSZ(cfg0)) { | |
137 | case 0: | |
138 | lasat_board_info.li_memsize = 0x0800000; | |
139 | break; | |
140 | case 1: | |
141 | lasat_board_info.li_memsize = 0x1000000; | |
142 | break; | |
143 | case 2: | |
144 | lasat_board_info.li_memsize = 0x2000000; | |
145 | break; | |
146 | case 3: | |
147 | lasat_board_info.li_memsize = 0x4000000; | |
148 | break; | |
149 | case 4: | |
150 | lasat_board_info.li_memsize = 0x8000000; | |
151 | break; | |
152 | default: | |
153 | lasat_board_info.li_memsize = 0; | |
154 | } | |
155 | ||
156 | switch (LASAT_W0_SDRAMBANKS(cfg0)) { | |
157 | case 0: | |
158 | break; | |
159 | case 1: | |
160 | lasat_board_info.li_memsize *= 2; | |
161 | break; | |
162 | default: | |
163 | break; | |
164 | } | |
165 | ||
166 | switch (LASAT_W0_BUSSPEED(cfg0)) { | |
167 | case 0x0: | |
168 | lasat_board_info.li_bus_hz = 60000000; | |
169 | break; | |
170 | case 0x1: | |
171 | lasat_board_info.li_bus_hz = 66000000; | |
172 | break; | |
173 | case 0x2: | |
174 | lasat_board_info.li_bus_hz = 66666667; | |
175 | break; | |
176 | case 0x3: | |
177 | lasat_board_info.li_bus_hz = 80000000; | |
178 | break; | |
179 | case 0x4: | |
180 | lasat_board_info.li_bus_hz = 83333333; | |
181 | break; | |
182 | case 0x5: | |
183 | lasat_board_info.li_bus_hz = 100000000; | |
184 | break; | |
185 | } | |
186 | ||
187 | switch (LASAT_W0_CPUCLK(cfg0)) { | |
188 | case 0x0: | |
189 | lasat_board_info.li_cpu_hz = | |
190 | lasat_board_info.li_bus_hz; | |
191 | break; | |
192 | case 0x1: | |
193 | lasat_board_info.li_cpu_hz = | |
194 | lasat_board_info.li_bus_hz + | |
195 | (lasat_board_info.li_bus_hz >> 1); | |
196 | break; | |
197 | case 0x2: | |
198 | lasat_board_info.li_cpu_hz = | |
199 | lasat_board_info.li_bus_hz + | |
200 | lasat_board_info.li_bus_hz; | |
201 | break; | |
202 | case 0x3: | |
203 | lasat_board_info.li_cpu_hz = | |
204 | lasat_board_info.li_bus_hz + | |
205 | lasat_board_info.li_bus_hz + | |
206 | (lasat_board_info.li_bus_hz >> 1); | |
207 | break; | |
208 | case 0x4: | |
209 | lasat_board_info.li_cpu_hz = | |
210 | lasat_board_info.li_bus_hz + | |
211 | lasat_board_info.li_bus_hz + | |
212 | lasat_board_info.li_bus_hz; | |
213 | break; | |
214 | } | |
215 | ||
216 | /* Flash size */ | |
217 | switch (LASAT_W1_FLASHSIZE(cfg1)) { | |
218 | case 0: | |
219 | lasat_board_info.li_flash_size = 0x200000; | |
220 | break; | |
221 | case 1: | |
222 | lasat_board_info.li_flash_size = 0x400000; | |
223 | break; | |
224 | case 2: | |
225 | lasat_board_info.li_flash_size = 0x800000; | |
226 | break; | |
227 | case 3: | |
228 | lasat_board_info.li_flash_size = 0x1000000; | |
229 | break; | |
230 | case 4: | |
231 | lasat_board_info.li_flash_size = 0x2000000; | |
232 | break; | |
233 | } | |
234 | ||
235 | init_flash_sizes(); | |
236 | ||
237 | lasat_board_info.li_bmid = LASAT_W0_BMID(cfg0); | |
238 | lasat_board_info.li_prid = lasat_board_info.li_eeprom_info.prid; | |
239 | if (lasat_board_info.li_prid == 0xffff || lasat_board_info.li_prid == 0) | |
240 | lasat_board_info.li_prid = lasat_board_info.li_bmid; | |
241 | ||
242 | /* Base model stuff */ | |
243 | if (lasat_board_info.li_bmid > i_n_base_models) | |
244 | lasat_board_info.li_bmid = i_n_base_models; | |
245 | strcpy(lasat_board_info.li_bmstr, | |
246 | i_txt_base_models[lasat_board_info.li_bmid]); | |
247 | ||
248 | /* Product ID dependent values */ | |
249 | c = lasat_board_info.li_prid; | |
250 | if (c >= i_n_prids) { | |
251 | strcpy(lasat_board_info.li_namestr, "Unknown Model"); | |
252 | strcpy(lasat_board_info.li_typestr, "Unknown Type"); | |
253 | } else { | |
254 | ppi = &vendor_info_table[0].vi_product_info[c]; | |
255 | strcpy(lasat_board_info.li_namestr, ppi->pi_name); | |
256 | if (ppi->pi_type) | |
257 | strcpy(lasat_board_info.li_typestr, ppi->pi_type); | |
258 | else | |
259 | sprintf(lasat_board_info.li_typestr, "%d", 10 * c); | |
260 | } | |
261 | ||
1f21d2bd BM |
262 | return 0; |
263 | } | |
264 | ||
265 | void lasat_write_eeprom_info(void) | |
266 | { | |
267 | unsigned long crc; | |
268 | ||
1f34f2e4 TH |
269 | mutex_lock(&lasat_eeprom_mutex); |
270 | ||
1f21d2bd BM |
271 | /* Generate the CRC */ |
272 | crc = EEPROM_CRC((unsigned char *)(&lasat_board_info.li_eeprom_info), | |
273 | sizeof(struct lasat_eeprom_struct) - 4); | |
274 | lasat_board_info.li_eeprom_info.crc32 = crc; | |
275 | ||
276 | /* Write the EEPROM info */ | |
277 | EEPROMWrite(0, (unsigned char *)&lasat_board_info.li_eeprom_info, | |
278 | sizeof(struct lasat_eeprom_struct)); | |
1f34f2e4 TH |
279 | |
280 | mutex_unlock(&lasat_eeprom_mutex); | |
1f21d2bd | 281 | } |