Commit | Line | Data |
---|---|---|
35832e26 MSJ |
1 | /* |
2 | * BRIEF MODULE DESCRIPTION | |
3 | * PROM library initialisation code, assuming a version of | |
4 | * pmon is the boot code. | |
5 | * | |
6 | * Copyright 2000,2001 MontaVista Software Inc. | |
7 | * Author: MontaVista Software, Inc. | |
8 | * ppopov@mvista.com or source@mvista.com | |
9 | * | |
10 | * This file was derived from Carsten Langgaard's | |
11 | * arch/mips/mips-boards/xx files. | |
12 | * | |
13 | * Carsten Langgaard, carstenl@mips.com | |
14 | * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. | |
15 | * | |
16 | * This program is free software; you can redistribute it and/or modify it | |
17 | * under the terms of the GNU General Public License as published by the | |
18 | * Free Software Foundation; either version 2 of the License, or (at your | |
19 | * option) any later version. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
22 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
23 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN | |
24 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
25 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
26 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF | |
27 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON | |
28 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
29 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
30 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
31 | * | |
32 | * You should have received a copy of the GNU General Public License along | |
33 | * with this program; if not, write to the Free Software Foundation, Inc., | |
34 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
35 | */ | |
36 | ||
37 | #include <linux/module.h> | |
38 | #include <linux/kernel.h> | |
39 | #include <linux/init.h> | |
40 | #include <linux/string.h> | |
41 | #include <linux/interrupt.h> | |
42 | #include <linux/mm.h> | |
5a0e3ad6 | 43 | #include <linux/slab.h> |
35832e26 MSJ |
44 | |
45 | #include <asm/addrspace.h> | |
46 | #include <asm/bootinfo.h> | |
47 | #include <asm-generic/sections.h> | |
48 | #include <asm/page.h> | |
49 | ||
50 | #include <msp_prom.h> | |
51 | #include <msp_regs.h> | |
52 | ||
53 | /* global PROM environment variables and pointers */ | |
54 | int prom_argc; | |
55 | char **prom_argv, **prom_envp; | |
56 | int *prom_vec; | |
57 | ||
58 | /* debug flag */ | |
59 | int init_debug = 1; | |
60 | ||
61 | /* memory blocks */ | |
62 | struct prom_pmemblock mdesc[PROM_MAX_PMEMBLOCKS]; | |
63 | ||
64 | /* default feature sets */ | |
65 | static char msp_default_features[] = | |
66 | #if defined(CONFIG_PMC_MSP4200_EVAL) \ | |
67 | || defined(CONFIG_PMC_MSP4200_GW) | |
68 | "ERER"; | |
69 | #elif defined(CONFIG_PMC_MSP7120_EVAL) \ | |
70 | || defined(CONFIG_PMC_MSP7120_GW) | |
71 | "EMEMSP"; | |
72 | #elif defined(CONFIG_PMC_MSP7120_FPGA) | |
73 | "EMEM"; | |
74 | #endif | |
75 | ||
76 | /* conversion functions */ | |
77 | static inline unsigned char str2hexnum(unsigned char c) | |
78 | { | |
79 | if (c >= '0' && c <= '9') | |
80 | return c - '0'; | |
81 | if (c >= 'a' && c <= 'f') | |
82 | return c - 'a' + 10; | |
83 | return 0; /* foo */ | |
84 | } | |
85 | ||
d552b233 | 86 | int str2eaddr(unsigned char *ea, unsigned char *str) |
35832e26 MSJ |
87 | { |
88 | int index = 0; | |
89 | unsigned char num = 0; | |
90 | ||
91 | while (*str != '\0') { | |
92 | if ((*str == '.') || (*str == ':')) { | |
93 | ea[index++] = num; | |
94 | num = 0; | |
95 | str++; | |
96 | } else { | |
97 | num = num << 4; | |
98 | num |= str2hexnum(*str++); | |
99 | } | |
100 | } | |
101 | ||
70342287 | 102 | if (index == 5) { |
35832e26 MSJ |
103 | ea[index++] = num; |
104 | return 0; | |
105 | } else | |
106 | return -1; | |
107 | } | |
108 | EXPORT_SYMBOL(str2eaddr); | |
109 | ||
110 | static inline unsigned long str2hex(unsigned char *str) | |
111 | { | |
112 | int value = 0; | |
113 | ||
114 | while (*str) { | |
115 | value = value << 4; | |
116 | value |= str2hexnum(*str++); | |
117 | } | |
118 | ||
119 | return value; | |
120 | } | |
121 | ||
122 | /* function to query the system information */ | |
123 | const char *get_system_type(void) | |
124 | { | |
125 | #if defined(CONFIG_PMC_MSP4200_EVAL) | |
126 | return "PMC-Sierra MSP4200 Eval Board"; | |
127 | #elif defined(CONFIG_PMC_MSP4200_GW) | |
128 | return "PMC-Sierra MSP4200 VoIP Gateway"; | |
129 | #elif defined(CONFIG_PMC_MSP7120_EVAL) | |
130 | return "PMC-Sierra MSP7120 Eval Board"; | |
131 | #elif defined(CONFIG_PMC_MSP7120_GW) | |
132 | return "PMC-Sierra MSP7120 Residential Gateway"; | |
133 | #elif defined(CONFIG_PMC_MSP7120_FPGA) | |
134 | return "PMC-Sierra MSP7120 FPGA"; | |
135 | #else | |
136 | #error "What is the type of *your* MSP?" | |
137 | #endif | |
138 | } | |
139 | ||
140 | int get_ethernet_addr(char *ethaddr_name, char *ethernet_addr) | |
141 | { | |
142 | char *ethaddr_str; | |
143 | ||
144 | ethaddr_str = prom_getenv(ethaddr_name); | |
145 | if (!ethaddr_str) { | |
146 | printk(KERN_WARNING "%s not set in boot prom\n", ethaddr_name); | |
147 | return -1; | |
148 | } | |
149 | ||
150 | if (str2eaddr(ethernet_addr, ethaddr_str) == -1) { | |
151 | printk(KERN_WARNING "%s badly formatted-<%s>\n", | |
152 | ethaddr_name, ethaddr_str); | |
153 | return -1; | |
154 | } | |
155 | ||
156 | if (init_debug > 1) { | |
157 | int i; | |
158 | printk(KERN_DEBUG "get_ethernet_addr: for %s ", ethaddr_name); | |
159 | for (i = 0; i < 5; i++) | |
160 | printk(KERN_DEBUG "%02x:", | |
161 | (unsigned char)*(ethernet_addr+i)); | |
162 | printk(KERN_DEBUG "%02x\n", *(ethernet_addr+i)); | |
163 | } | |
164 | ||
165 | return 0; | |
166 | } | |
167 | EXPORT_SYMBOL(get_ethernet_addr); | |
168 | ||
169 | static char *get_features(void) | |
170 | { | |
171 | char *feature = prom_getenv(FEATURES); | |
172 | ||
173 | if (feature == NULL) { | |
174 | /* default features based on MACHINE_TYPE */ | |
175 | feature = msp_default_features; | |
176 | } | |
177 | ||
178 | return feature; | |
179 | } | |
180 | ||
181 | static char test_feature(char c) | |
182 | { | |
183 | char *feature = get_features(); | |
184 | ||
185 | while (*feature) { | |
186 | if (*feature++ == c) | |
187 | return *feature; | |
188 | feature++; | |
189 | } | |
190 | ||
191 | return FEATURE_NOEXIST; | |
192 | } | |
193 | ||
194 | unsigned long get_deviceid(void) | |
195 | { | |
196 | char *deviceid = prom_getenv(DEVICEID); | |
197 | ||
198 | if (deviceid == NULL) | |
199 | return *DEV_ID_REG; | |
200 | else | |
201 | return str2hex(deviceid); | |
202 | } | |
203 | ||
204 | char identify_pci(void) | |
205 | { | |
206 | return test_feature(PCI_KEY); | |
207 | } | |
208 | EXPORT_SYMBOL(identify_pci); | |
209 | ||
210 | char identify_pcimux(void) | |
211 | { | |
212 | return test_feature(PCIMUX_KEY); | |
213 | } | |
214 | ||
215 | char identify_sec(void) | |
216 | { | |
217 | return test_feature(SEC_KEY); | |
218 | } | |
219 | EXPORT_SYMBOL(identify_sec); | |
220 | ||
221 | char identify_spad(void) | |
222 | { | |
223 | return test_feature(SPAD_KEY); | |
224 | } | |
225 | EXPORT_SYMBOL(identify_spad); | |
226 | ||
227 | char identify_tdm(void) | |
228 | { | |
229 | return test_feature(TDM_KEY); | |
230 | } | |
231 | EXPORT_SYMBOL(identify_tdm); | |
232 | ||
233 | char identify_zsp(void) | |
234 | { | |
235 | return test_feature(ZSP_KEY); | |
236 | } | |
237 | EXPORT_SYMBOL(identify_zsp); | |
238 | ||
239 | static char identify_enetfeature(char key, unsigned long interface_num) | |
240 | { | |
241 | char *feature = get_features(); | |
242 | ||
243 | while (*feature) { | |
244 | if (*feature++ == key && interface_num-- == 0) | |
245 | return *feature; | |
246 | feature++; | |
247 | } | |
248 | ||
249 | return FEATURE_NOEXIST; | |
250 | } | |
251 | ||
252 | char identify_enet(unsigned long interface_num) | |
253 | { | |
254 | return identify_enetfeature(ENET_KEY, interface_num); | |
255 | } | |
256 | EXPORT_SYMBOL(identify_enet); | |
257 | ||
258 | char identify_enetTxD(unsigned long interface_num) | |
259 | { | |
260 | return identify_enetfeature(ENETTXD_KEY, interface_num); | |
261 | } | |
262 | EXPORT_SYMBOL(identify_enetTxD); | |
263 | ||
264 | unsigned long identify_family(void) | |
265 | { | |
266 | unsigned long deviceid; | |
267 | ||
268 | deviceid = get_deviceid(); | |
269 | ||
270 | return deviceid & CPU_DEVID_FAMILY; | |
271 | } | |
272 | EXPORT_SYMBOL(identify_family); | |
273 | ||
274 | unsigned long identify_revision(void) | |
275 | { | |
276 | unsigned long deviceid; | |
277 | ||
278 | deviceid = get_deviceid(); | |
279 | ||
280 | return deviceid & CPU_DEVID_REVISION; | |
281 | } | |
282 | EXPORT_SYMBOL(identify_revision); | |
283 | ||
284 | /* PROM environment functions */ | |
285 | char *prom_getenv(char *env_name) | |
286 | { | |
287 | /* | |
70342287 | 288 | * Return a pointer to the given environment variable. prom_envp |
35832e26 MSJ |
289 | * points to a null terminated array of pointers to variables. |
290 | * Environment variables are stored in the form of "memsize=64" | |
291 | */ | |
292 | ||
293 | char **var = prom_envp; | |
294 | int i = strlen(env_name); | |
295 | ||
296 | while (*var) { | |
297 | if (strncmp(env_name, *var, i) == 0) { | |
298 | return (*var + strlen(env_name) + 1); | |
299 | } | |
300 | var++; | |
301 | } | |
302 | ||
303 | return NULL; | |
304 | } | |
305 | ||
306 | /* PROM commandline functions */ | |
35832e26 MSJ |
307 | void __init prom_init_cmdline(void) |
308 | { | |
309 | char *cp; | |
310 | int actr; | |
311 | ||
312 | actr = 1; /* Always ignore argv[0] */ | |
313 | ||
314 | cp = &(arcs_cmdline[0]); | |
315 | while (actr < prom_argc) { | |
316 | strcpy(cp, prom_argv[actr]); | |
317 | cp += strlen(prom_argv[actr]); | |
318 | *cp++ = ' '; | |
319 | actr++; | |
320 | } | |
321 | if (cp != &(arcs_cmdline[0])) /* get rid of trailing space */ | |
322 | --cp; | |
323 | *cp = '\0'; | |
324 | } | |
325 | ||
326 | /* memory allocation functions */ | |
327 | static int __init prom_memtype_classify(unsigned int type) | |
328 | { | |
329 | switch (type) { | |
330 | case yamon_free: | |
331 | return BOOT_MEM_RAM; | |
332 | case yamon_prom: | |
333 | return BOOT_MEM_ROM_DATA; | |
334 | default: | |
335 | return BOOT_MEM_RESERVED; | |
336 | } | |
337 | } | |
338 | ||
339 | void __init prom_meminit(void) | |
340 | { | |
341 | struct prom_pmemblock *p; | |
342 | ||
343 | p = prom_getmdesc(); | |
344 | ||
345 | while (p->size) { | |
346 | long type; | |
347 | unsigned long base, size; | |
348 | ||
349 | type = prom_memtype_classify(p->type); | |
350 | base = p->base; | |
351 | size = p->size; | |
352 | ||
353 | add_memory_region(base, size, type); | |
354 | p++; | |
355 | } | |
356 | } | |
357 | ||
358 | void __init prom_free_prom_memory(void) | |
359 | { | |
360 | int argc; | |
361 | char **argv; | |
362 | char **envp; | |
363 | char *ptr; | |
364 | int len = 0; | |
365 | int i; | |
366 | unsigned long addr; | |
367 | ||
368 | /* | |
369 | * preserve environment variables and command line from pmon/bbload | |
370 | * first preserve the command line | |
371 | */ | |
372 | for (argc = 0; argc < prom_argc; argc++) { | |
373 | len += sizeof(char *); /* length of pointer */ | |
374 | len += strlen(prom_argv[argc]) + 1; /* length of string */ | |
375 | } | |
376 | len += sizeof(char *); /* plus length of null pointer */ | |
377 | ||
378 | argv = kmalloc(len, GFP_KERNEL); | |
379 | ptr = (char *) &argv[prom_argc + 1]; /* strings follow array */ | |
380 | ||
381 | for (argc = 0; argc < prom_argc; argc++) { | |
382 | argv[argc] = ptr; | |
383 | strcpy(ptr, prom_argv[argc]); | |
384 | ptr += strlen(prom_argv[argc]) + 1; | |
385 | } | |
386 | argv[prom_argc] = NULL; /* end array with null pointer */ | |
387 | prom_argv = argv; | |
388 | ||
389 | /* next preserve the environment variables */ | |
390 | len = 0; | |
391 | i = 0; | |
392 | for (envp = prom_envp; *envp != NULL; envp++) { | |
393 | i++; /* count number of environment variables */ | |
394 | len += sizeof(char *); /* length of pointer */ | |
395 | len += strlen(*envp) + 1; /* length of string */ | |
396 | } | |
397 | len += sizeof(char *); /* plus length of null pointer */ | |
398 | ||
399 | envp = kmalloc(len, GFP_KERNEL); | |
400 | ptr = (char *) &envp[i+1]; | |
401 | ||
402 | for (argc = 0; argc < i; argc++) { | |
403 | envp[argc] = ptr; | |
404 | strcpy(ptr, prom_envp[argc]); | |
405 | ptr += strlen(prom_envp[argc]) + 1; | |
406 | } | |
407 | envp[i] = NULL; /* end array with null pointer */ | |
408 | prom_envp = envp; | |
409 | ||
410 | for (i = 0; i < boot_mem_map.nr_map; i++) { | |
411 | if (boot_mem_map.map[i].type != BOOT_MEM_ROM_DATA) | |
412 | continue; | |
413 | ||
414 | addr = boot_mem_map.map[i].addr; | |
415 | free_init_pages("prom memory", | |
416 | addr, addr + boot_mem_map.map[i].size); | |
417 | } | |
418 | } | |
419 | ||
420 | struct prom_pmemblock *__init prom_getmdesc(void) | |
421 | { | |
422 | static char memsz_env[] __initdata = "memsize"; | |
423 | static char heaptop_env[] __initdata = "heaptop"; | |
424 | char *str; | |
425 | unsigned int memsize; | |
426 | unsigned int heaptop; | |
35832e26 MSJ |
427 | int i; |
428 | ||
429 | str = prom_getenv(memsz_env); | |
430 | if (!str) { | |
431 | ppfinit("memsize not set in boot prom, " | |
432 | "set to default (32Mb)\n"); | |
433 | memsize = 0x02000000; | |
434 | } else { | |
435 | memsize = simple_strtol(str, NULL, 0); | |
436 | ||
437 | if (memsize == 0) { | |
438 | /* if memsize is a bad size, use reasonable default */ | |
439 | memsize = 0x02000000; | |
440 | } | |
441 | ||
442 | /* convert to physical address (removing caching bits, etc) */ | |
443 | memsize = CPHYSADDR(memsize); | |
444 | } | |
445 | ||
446 | str = prom_getenv(heaptop_env); | |
447 | if (!str) { | |
448 | heaptop = CPHYSADDR((u32)&_text); | |
449 | ppfinit("heaptop not set in boot prom, " | |
450 | "set to default 0x%08x\n", heaptop); | |
451 | } else { | |
452 | heaptop = simple_strtol(str, NULL, 16); | |
453 | if (heaptop == 0) { | |
454 | /* heaptop conversion bad, might have 0xValue */ | |
455 | heaptop = simple_strtol(str, NULL, 0); | |
456 | ||
457 | if (heaptop == 0) { | |
458 | /* heaptop still bad, use reasonable default */ | |
459 | heaptop = CPHYSADDR((u32)&_text); | |
460 | } | |
461 | } | |
462 | ||
463 | /* convert to physical address (removing caching bits, etc) */ | |
464 | heaptop = CPHYSADDR((u32)heaptop); | |
465 | } | |
466 | ||
467 | /* the base region */ | |
468 | i = 0; | |
469 | mdesc[i].type = BOOT_MEM_RESERVED; | |
470 | mdesc[i].base = 0x00000000; | |
471 | mdesc[i].size = PAGE_ALIGN(0x300 + 0x80); | |
472 | /* jtag interrupt vector + sizeof vector */ | |
473 | ||
474 | /* PMON data */ | |
475 | if (heaptop > mdesc[i].base + mdesc[i].size) { | |
476 | i++; /* 1 */ | |
477 | mdesc[i].type = BOOT_MEM_ROM_DATA; | |
478 | mdesc[i].base = mdesc[i-1].base + mdesc[i-1].size; | |
479 | mdesc[i].size = heaptop - mdesc[i].base; | |
480 | } | |
481 | ||
482 | /* end of PMON data to start of kernel -- probably zero .. */ | |
483 | if (heaptop != CPHYSADDR((u32)_text)) { | |
484 | i++; /* 2 */ | |
485 | mdesc[i].type = BOOT_MEM_RAM; | |
486 | mdesc[i].base = heaptop; | |
487 | mdesc[i].size = CPHYSADDR((u32)_text) - mdesc[i].base; | |
488 | } | |
489 | ||
490 | /* kernel proper */ | |
491 | i++; /* 3 */ | |
492 | mdesc[i].type = BOOT_MEM_RESERVED; | |
493 | mdesc[i].base = CPHYSADDR((u32)_text); | |
5c5dd1d2 | 494 | mdesc[i].size = CPHYSADDR(PAGE_ALIGN((u32)_end)) - mdesc[i].base; |
35832e26 MSJ |
495 | |
496 | /* Remainder of RAM -- under memsize */ | |
497 | i++; /* 5 */ | |
498 | mdesc[i].type = yamon_free; | |
499 | mdesc[i].base = mdesc[i-1].base + mdesc[i-1].size; | |
500 | mdesc[i].size = memsize - mdesc[i].base; | |
501 | ||
502 | return &mdesc[0]; | |
503 | } |