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-rw-r--r--arch/mips/mm/init.c126
1 files changed, 63 insertions, 63 deletions
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index 66d0f49c5bec..074ac5459026 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -252,6 +252,69 @@ void __init fixrange_init(unsigned long start, unsigned long end,
252#endif 252#endif
253} 253}
254 254
255unsigned __weak platform_maar_init(unsigned num_pairs)
256{
257 struct maar_config cfg[BOOT_MEM_MAP_MAX];
258 unsigned i, num_configured, num_cfg = 0;
259 phys_addr_t skip;
260
261 for (i = 0; i < boot_mem_map.nr_map; i++) {
262 switch (boot_mem_map.map[i].type) {
263 case BOOT_MEM_RAM:
264 case BOOT_MEM_INIT_RAM:
265 break;
266 default:
267 continue;
268 }
269
270 skip = 0x10000 - (boot_mem_map.map[i].addr & 0xffff);
271
272 cfg[num_cfg].lower = boot_mem_map.map[i].addr;
273 cfg[num_cfg].lower += skip;
274
275 cfg[num_cfg].upper = cfg[num_cfg].lower;
276 cfg[num_cfg].upper += boot_mem_map.map[i].size - 1;
277 cfg[num_cfg].upper -= skip;
278
279 cfg[num_cfg].attrs = MIPS_MAAR_S;
280 num_cfg++;
281 }
282
283 num_configured = maar_config(cfg, num_cfg, num_pairs);
284 if (num_configured < num_cfg)
285 pr_warn("Not enough MAAR pairs (%u) for all bootmem regions (%u)\n",
286 num_pairs, num_cfg);
287
288 return num_configured;
289}
290
291static void maar_init(void)
292{
293 unsigned num_maars, used, i;
294
295 if (!cpu_has_maar)
296 return;
297
298 /* Detect the number of MAARs */
299 write_c0_maari(~0);
300 back_to_back_c0_hazard();
301 num_maars = read_c0_maari() + 1;
302
303 /* MAARs should be in pairs */
304 WARN_ON(num_maars % 2);
305
306 /* Configure the required MAARs */
307 used = platform_maar_init(num_maars / 2);
308
309 /* Disable any further MAARs */
310 for (i = (used * 2); i < num_maars; i++) {
311 write_c0_maari(i);
312 back_to_back_c0_hazard();
313 write_c0_maar(0);
314 back_to_back_c0_hazard();
315 }
316}
317
255#ifndef CONFIG_NEED_MULTIPLE_NODES 318#ifndef CONFIG_NEED_MULTIPLE_NODES
256int page_is_ram(unsigned long pagenr) 319int page_is_ram(unsigned long pagenr)
257{ 320{
@@ -334,69 +397,6 @@ static inline void mem_init_free_highmem(void)
334#endif 397#endif
335} 398}
336 399
337unsigned __weak platform_maar_init(unsigned num_pairs)
338{
339 struct maar_config cfg[BOOT_MEM_MAP_MAX];
340 unsigned i, num_configured, num_cfg = 0;
341 phys_addr_t skip;
342
343 for (i = 0; i < boot_mem_map.nr_map; i++) {
344 switch (boot_mem_map.map[i].type) {
345 case BOOT_MEM_RAM:
346 case BOOT_MEM_INIT_RAM:
347 break;
348 default:
349 continue;
350 }
351
352 skip = 0x10000 - (boot_mem_map.map[i].addr & 0xffff);
353
354 cfg[num_cfg].lower = boot_mem_map.map[i].addr;
355 cfg[num_cfg].lower += skip;
356
357 cfg[num_cfg].upper = cfg[num_cfg].lower;
358 cfg[num_cfg].upper += boot_mem_map.map[i].size - 1;
359 cfg[num_cfg].upper -= skip;
360
361 cfg[num_cfg].attrs = MIPS_MAAR_S;
362 num_cfg++;
363 }
364
365 num_configured = maar_config(cfg, num_cfg, num_pairs);
366 if (num_configured < num_cfg)
367 pr_warn("Not enough MAAR pairs (%u) for all bootmem regions (%u)\n",
368 num_pairs, num_cfg);
369
370 return num_configured;
371}
372
373static void maar_init(void)
374{
375 unsigned num_maars, used, i;
376
377 if (!cpu_has_maar)
378 return;
379
380 /* Detect the number of MAARs */
381 write_c0_maari(~0);
382 back_to_back_c0_hazard();
383 num_maars = read_c0_maari() + 1;
384
385 /* MAARs should be in pairs */
386 WARN_ON(num_maars % 2);
387
388 /* Configure the required MAARs */
389 used = platform_maar_init(num_maars / 2);
390
391 /* Disable any further MAARs */
392 for (i = (used * 2); i < num_maars; i++) {
393 write_c0_maari(i);
394 back_to_back_c0_hazard();
395 write_c0_maar(0);
396 back_to_back_c0_hazard();
397 }
398}
399
400void __init mem_init(void) 400void __init mem_init(void)
401{ 401{
402#ifdef CONFIG_HIGHMEM 402#ifdef CONFIG_HIGHMEM