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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/addrspace.h> |
28 | #include "at93c.h" | |
29 | /* New model description table */ | |
30 | #include "lasat_models.h" | |
31 | ||
1f34f2e4 TH |
32 | static DEFINE_MUTEX(lasat_eeprom_mutex); |
33 | ||
1f21d2bd BM |
34 | #define EEPROM_CRC(data, len) (~crc32(~0, data, len)) |
35 | ||
36 | struct lasat_info lasat_board_info; | |
37 | ||
1f21d2bd BM |
38 | int EEPROMRead(unsigned int pos, unsigned char *data, int len) |
39 | { | |
40 | int i; | |
41 | ||
42 | for (i = 0; i < len; i++) | |
43 | *data++ = at93c_read(pos++); | |
44 | ||
45 | return 0; | |
46 | } | |
47 | ||
48 | int EEPROMWrite(unsigned int pos, unsigned char *data, int len) | |
49 | { | |
50 | int i; | |
51 | ||
52 | for (i = 0; i < len; i++) | |
53 | at93c_write(pos++, *data++); | |
54 | ||
55 | return 0; | |
56 | } | |
57 | ||
58 | static void init_flash_sizes(void) | |
59 | { | |
60 | unsigned long *lb = lasat_board_info.li_flashpart_base; | |
61 | unsigned long *ls = lasat_board_info.li_flashpart_size; | |
62 | int i; | |
63 | ||
64 | ls[LASAT_MTD_BOOTLOADER] = 0x40000; | |
65 | ls[LASAT_MTD_SERVICE] = 0xC0000; | |
66 | ls[LASAT_MTD_NORMAL] = 0x100000; | |
67 | ||
b27418aa | 68 | if (!IS_LASAT_200()) { |
1f21d2bd BM |
69 | lasat_board_info.li_flash_base = 0x1e000000; |
70 | ||
71 | lb[LASAT_MTD_BOOTLOADER] = 0x1e400000; | |
72 | ||
73 | if (lasat_board_info.li_flash_size > 0x200000) { | |
74 | ls[LASAT_MTD_CONFIG] = 0x100000; | |
75 | ls[LASAT_MTD_FS] = 0x500000; | |
76 | } | |
77 | } else { | |
78 | lasat_board_info.li_flash_base = 0x10000000; | |
79 | ||
80 | if (lasat_board_info.li_flash_size < 0x1000000) { | |
81 | lb[LASAT_MTD_BOOTLOADER] = 0x10000000; | |
82 | ls[LASAT_MTD_CONFIG] = 0x100000; | |
83 | if (lasat_board_info.li_flash_size >= 0x400000) | |
84 | ls[LASAT_MTD_FS] = | |
85 | lasat_board_info.li_flash_size - 0x300000; | |
86 | } | |
87 | } | |
88 | ||
89 | for (i = 1; i < LASAT_MTD_LAST; i++) | |
90 | lb[i] = lb[i-1] + ls[i-1]; | |
91 | } | |
92 | ||
93 | int lasat_init_board_info(void) | |
94 | { | |
95 | int c; | |
96 | unsigned long crc; | |
97 | unsigned long cfg0, cfg1; | |
98 | const struct product_info *ppi; | |
99 | int i_n_base_models = N_BASE_MODELS; | |
100 | const char * const * i_txt_base_models = txt_base_models; | |
101 | int i_n_prids = N_PRIDS; | |
102 | ||
103 | memset(&lasat_board_info, 0, sizeof(lasat_board_info)); | |
104 | ||
105 | /* First read the EEPROM info */ | |
106 | EEPROMRead(0, (unsigned char *)&lasat_board_info.li_eeprom_info, | |
107 | sizeof(struct lasat_eeprom_struct)); | |
108 | ||
109 | /* Check the CRC */ | |
110 | crc = EEPROM_CRC((unsigned char *)(&lasat_board_info.li_eeprom_info), | |
111 | sizeof(struct lasat_eeprom_struct) - 4); | |
112 | ||
113 | if (crc != lasat_board_info.li_eeprom_info.crc32) { | |
114 | printk(KERN_WARNING "WARNING...\nWARNING...\nEEPROM CRC does " | |
115 | "not match calculated, attempting to soldier on...\n"); | |
116 | } | |
117 | ||
118 | if (lasat_board_info.li_eeprom_info.version != LASAT_EEPROM_VERSION) { | |
119 | printk(KERN_WARNING "WARNING...\nWARNING...\nEEPROM version " | |
120 | "%d, wanted version %d, attempting to soldier on...\n", | |
121 | (unsigned int)lasat_board_info.li_eeprom_info.version, | |
122 | LASAT_EEPROM_VERSION); | |
123 | } | |
124 | ||
125 | cfg0 = lasat_board_info.li_eeprom_info.cfg[0]; | |
126 | cfg1 = lasat_board_info.li_eeprom_info.cfg[1]; | |
127 | ||
128 | if (LASAT_W0_DSCTYPE(cfg0) != 1) { | |
129 | printk(KERN_WARNING "WARNING...\nWARNING...\n" | |
130 | "Invalid configuration read from EEPROM, attempting to " | |
131 | "soldier on..."); | |
132 | } | |
133 | /* We have a valid configuration */ | |
134 | ||
135 | switch (LASAT_W0_SDRAMBANKSZ(cfg0)) { | |
136 | case 0: | |
137 | lasat_board_info.li_memsize = 0x0800000; | |
138 | break; | |
139 | case 1: | |
140 | lasat_board_info.li_memsize = 0x1000000; | |
141 | break; | |
142 | case 2: | |
143 | lasat_board_info.li_memsize = 0x2000000; | |
144 | break; | |
145 | case 3: | |
146 | lasat_board_info.li_memsize = 0x4000000; | |
147 | break; | |
148 | case 4: | |
149 | lasat_board_info.li_memsize = 0x8000000; | |
150 | break; | |
151 | default: | |
152 | lasat_board_info.li_memsize = 0; | |
153 | } | |
154 | ||
155 | switch (LASAT_W0_SDRAMBANKS(cfg0)) { | |
156 | case 0: | |
157 | break; | |
158 | case 1: | |
159 | lasat_board_info.li_memsize *= 2; | |
160 | break; | |
161 | default: | |
162 | break; | |
163 | } | |
164 | ||
165 | switch (LASAT_W0_BUSSPEED(cfg0)) { | |
166 | case 0x0: | |
167 | lasat_board_info.li_bus_hz = 60000000; | |
168 | break; | |
169 | case 0x1: | |
170 | lasat_board_info.li_bus_hz = 66000000; | |
171 | break; | |
172 | case 0x2: | |
173 | lasat_board_info.li_bus_hz = 66666667; | |
174 | break; | |
175 | case 0x3: | |
176 | lasat_board_info.li_bus_hz = 80000000; | |
177 | break; | |
178 | case 0x4: | |
179 | lasat_board_info.li_bus_hz = 83333333; | |
180 | break; | |
181 | case 0x5: | |
182 | lasat_board_info.li_bus_hz = 100000000; | |
183 | break; | |
184 | } | |
185 | ||
186 | switch (LASAT_W0_CPUCLK(cfg0)) { | |
187 | case 0x0: | |
188 | lasat_board_info.li_cpu_hz = | |
189 | lasat_board_info.li_bus_hz; | |
190 | break; | |
191 | case 0x1: | |
192 | lasat_board_info.li_cpu_hz = | |
193 | lasat_board_info.li_bus_hz + | |
194 | (lasat_board_info.li_bus_hz >> 1); | |
195 | break; | |
196 | case 0x2: | |
197 | lasat_board_info.li_cpu_hz = | |
198 | lasat_board_info.li_bus_hz + | |
199 | lasat_board_info.li_bus_hz; | |
200 | break; | |
201 | case 0x3: | |
202 | lasat_board_info.li_cpu_hz = | |
203 | lasat_board_info.li_bus_hz + | |
204 | lasat_board_info.li_bus_hz + | |
205 | (lasat_board_info.li_bus_hz >> 1); | |
206 | break; | |
207 | case 0x4: | |
208 | lasat_board_info.li_cpu_hz = | |
209 | lasat_board_info.li_bus_hz + | |
210 | lasat_board_info.li_bus_hz + | |
211 | lasat_board_info.li_bus_hz; | |
212 | break; | |
213 | } | |
214 | ||
215 | /* Flash size */ | |
216 | switch (LASAT_W1_FLASHSIZE(cfg1)) { | |
217 | case 0: | |
218 | lasat_board_info.li_flash_size = 0x200000; | |
219 | break; | |
220 | case 1: | |
221 | lasat_board_info.li_flash_size = 0x400000; | |
222 | break; | |
223 | case 2: | |
224 | lasat_board_info.li_flash_size = 0x800000; | |
225 | break; | |
226 | case 3: | |
227 | lasat_board_info.li_flash_size = 0x1000000; | |
228 | break; | |
229 | case 4: | |
230 | lasat_board_info.li_flash_size = 0x2000000; | |
231 | break; | |
232 | } | |
233 | ||
234 | init_flash_sizes(); | |
235 | ||
236 | lasat_board_info.li_bmid = LASAT_W0_BMID(cfg0); | |
237 | lasat_board_info.li_prid = lasat_board_info.li_eeprom_info.prid; | |
238 | if (lasat_board_info.li_prid == 0xffff || lasat_board_info.li_prid == 0) | |
239 | lasat_board_info.li_prid = lasat_board_info.li_bmid; | |
240 | ||
241 | /* Base model stuff */ | |
242 | if (lasat_board_info.li_bmid > i_n_base_models) | |
243 | lasat_board_info.li_bmid = i_n_base_models; | |
244 | strcpy(lasat_board_info.li_bmstr, | |
245 | i_txt_base_models[lasat_board_info.li_bmid]); | |
246 | ||
247 | /* Product ID dependent values */ | |
248 | c = lasat_board_info.li_prid; | |
249 | if (c >= i_n_prids) { | |
250 | strcpy(lasat_board_info.li_namestr, "Unknown Model"); | |
251 | strcpy(lasat_board_info.li_typestr, "Unknown Type"); | |
252 | } else { | |
253 | ppi = &vendor_info_table[0].vi_product_info[c]; | |
254 | strcpy(lasat_board_info.li_namestr, ppi->pi_name); | |
255 | if (ppi->pi_type) | |
256 | strcpy(lasat_board_info.li_typestr, ppi->pi_type); | |
257 | else | |
258 | sprintf(lasat_board_info.li_typestr, "%d", 10 * c); | |
259 | } | |
260 | ||
1f21d2bd BM |
261 | return 0; |
262 | } | |
263 | ||
264 | void lasat_write_eeprom_info(void) | |
265 | { | |
266 | unsigned long crc; | |
267 | ||
1f34f2e4 TH |
268 | mutex_lock(&lasat_eeprom_mutex); |
269 | ||
1f21d2bd BM |
270 | /* Generate the CRC */ |
271 | crc = EEPROM_CRC((unsigned char *)(&lasat_board_info.li_eeprom_info), | |
272 | sizeof(struct lasat_eeprom_struct) - 4); | |
273 | lasat_board_info.li_eeprom_info.crc32 = crc; | |
274 | ||
275 | /* Write the EEPROM info */ | |
276 | EEPROMWrite(0, (unsigned char *)&lasat_board_info.li_eeprom_info, | |
277 | sizeof(struct lasat_eeprom_struct)); | |
1f34f2e4 TH |
278 | |
279 | mutex_unlock(&lasat_eeprom_mutex); | |
1f21d2bd | 280 | } |