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Commit | Line | Data |
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1da177e4 LT |
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) 1995 Linus Torvalds | |
7 | * Copyright (C) 1995 Waldorf Electronics | |
8 | * Copyright (C) 1994, 95, 96, 97, 98, 99, 2000, 01, 02, 03 Ralf Baechle | |
9 | * Copyright (C) 1996 Stoned Elipot | |
10 | * Copyright (C) 1999 Silicon Graphics, Inc. | |
20d60d99 | 11 | * Copyright (C) 2000, 2001, 2002, 2007 Maciej W. Rozycki |
1da177e4 | 12 | */ |
1da177e4 LT |
13 | #include <linux/init.h> |
14 | #include <linux/ioport.h> | |
73bc256d | 15 | #include <linux/export.h> |
894673ee | 16 | #include <linux/screen_info.h> |
9d15ffc8 | 17 | #include <linux/memblock.h> |
1da177e4 LT |
18 | #include <linux/bootmem.h> |
19 | #include <linux/initrd.h> | |
1da177e4 LT |
20 | #include <linux/root_dev.h> |
21 | #include <linux/highmem.h> | |
22 | #include <linux/console.h> | |
22a9835c | 23 | #include <linux/pfn.h> |
6312e0ee | 24 | #include <linux/debugfs.h> |
1da177e4 LT |
25 | |
26 | #include <asm/addrspace.h> | |
27 | #include <asm/bootinfo.h> | |
20d60d99 | 28 | #include <asm/bugs.h> |
ec74e361 | 29 | #include <asm/cache.h> |
1da177e4 LT |
30 | #include <asm/cpu.h> |
31 | #include <asm/sections.h> | |
32 | #include <asm/setup.h> | |
87353d8a | 33 | #include <asm/smp-ops.h> |
f2ffa5ab | 34 | #include <asm/prom.h> |
1da177e4 | 35 | |
ec74e361 | 36 | struct cpuinfo_mips cpu_data[NR_CPUS] __read_mostly; |
1da177e4 LT |
37 | |
38 | EXPORT_SYMBOL(cpu_data); | |
39 | ||
40 | #ifdef CONFIG_VT | |
41 | struct screen_info screen_info; | |
42 | #endif | |
43 | ||
44 | /* | |
45 | * Despite it's name this variable is even if we don't have PCI | |
46 | */ | |
47 | unsigned int PCI_DMA_BUS_IS_PHYS; | |
48 | ||
49 | EXPORT_SYMBOL(PCI_DMA_BUS_IS_PHYS); | |
50 | ||
51 | /* | |
52 | * Setup information | |
53 | * | |
54 | * These are initialized so they are in the .data section | |
55 | */ | |
ec74e361 | 56 | unsigned long mips_machtype __read_mostly = MACH_UNKNOWN; |
1da177e4 LT |
57 | |
58 | EXPORT_SYMBOL(mips_machtype); | |
1da177e4 LT |
59 | |
60 | struct boot_mem_map boot_mem_map; | |
61 | ||
6acc7d48 DV |
62 | static char __initdata command_line[COMMAND_LINE_SIZE]; |
63 | char __initdata arcs_cmdline[COMMAND_LINE_SIZE]; | |
64 | ||
65 | #ifdef CONFIG_CMDLINE_BOOL | |
66 | static char __initdata builtin_cmdline[COMMAND_LINE_SIZE] = CONFIG_CMDLINE; | |
67 | #endif | |
1da177e4 LT |
68 | |
69 | /* | |
70 | * mips_io_port_base is the begin of the address space to which x86 style | |
71 | * I/O ports are mapped. | |
72 | */ | |
1befdd55 | 73 | const unsigned long mips_io_port_base = -1; |
1da177e4 LT |
74 | EXPORT_SYMBOL(mips_io_port_base); |
75 | ||
1da177e4 LT |
76 | static struct resource code_resource = { .name = "Kernel code", }; |
77 | static struct resource data_resource = { .name = "Kernel data", }; | |
78 | ||
79 | void __init add_memory_region(phys_t start, phys_t size, long type) | |
80 | { | |
81 | int x = boot_mem_map.nr_map; | |
0ec7ec75 | 82 | int i; |
1da177e4 | 83 | |
b6f1f0de FBH |
84 | /* Sanity check */ |
85 | if (start + size < start) { | |
a64ae7a2 | 86 | pr_warning("Trying to add an invalid memory region, skipped\n"); |
b6f1f0de FBH |
87 | return; |
88 | } | |
89 | ||
1da177e4 | 90 | /* |
0ec7ec75 | 91 | * Try to merge with existing entry, if any. |
1da177e4 | 92 | */ |
0ec7ec75 RB |
93 | for (i = 0; i < boot_mem_map.nr_map; i++) { |
94 | struct boot_mem_map_entry *entry = boot_mem_map.map + i; | |
95 | unsigned long top; | |
96 | ||
97 | if (entry->type != type) | |
98 | continue; | |
99 | ||
100 | if (start + size < entry->addr) | |
101 | continue; /* no overlap */ | |
102 | ||
103 | if (entry->addr + entry->size < start) | |
104 | continue; /* no overlap */ | |
105 | ||
106 | top = max(entry->addr + entry->size, start + size); | |
107 | entry->addr = min(entry->addr, start); | |
108 | entry->size = top - entry->addr; | |
109 | ||
1da177e4 LT |
110 | return; |
111 | } | |
112 | ||
0ec7ec75 | 113 | if (boot_mem_map.nr_map == BOOT_MEM_MAP_MAX) { |
a64ae7a2 | 114 | pr_err("Ooops! Too many entries in the memory map!\n"); |
1da177e4 LT |
115 | return; |
116 | } | |
117 | ||
118 | boot_mem_map.map[x].addr = start; | |
119 | boot_mem_map.map[x].size = size; | |
120 | boot_mem_map.map[x].type = type; | |
121 | boot_mem_map.nr_map++; | |
122 | } | |
123 | ||
124 | static void __init print_memory_map(void) | |
125 | { | |
126 | int i; | |
127 | const int field = 2 * sizeof(unsigned long); | |
128 | ||
129 | for (i = 0; i < boot_mem_map.nr_map; i++) { | |
a64ae7a2 | 130 | printk(KERN_INFO " memory: %0*Lx @ %0*Lx ", |
1da177e4 LT |
131 | field, (unsigned long long) boot_mem_map.map[i].size, |
132 | field, (unsigned long long) boot_mem_map.map[i].addr); | |
133 | ||
134 | switch (boot_mem_map.map[i].type) { | |
135 | case BOOT_MEM_RAM: | |
a64ae7a2 | 136 | printk(KERN_CONT "(usable)\n"); |
1da177e4 | 137 | break; |
43064c0c DD |
138 | case BOOT_MEM_INIT_RAM: |
139 | printk(KERN_CONT "(usable after init)\n"); | |
140 | break; | |
1da177e4 | 141 | case BOOT_MEM_ROM_DATA: |
a64ae7a2 | 142 | printk(KERN_CONT "(ROM data)\n"); |
1da177e4 LT |
143 | break; |
144 | case BOOT_MEM_RESERVED: | |
a64ae7a2 | 145 | printk(KERN_CONT "(reserved)\n"); |
1da177e4 LT |
146 | break; |
147 | default: | |
a64ae7a2 | 148 | printk(KERN_CONT "type %lu\n", boot_mem_map.map[i].type); |
1da177e4 LT |
149 | break; |
150 | } | |
151 | } | |
152 | } | |
153 | ||
d2043ca8 FBH |
154 | /* |
155 | * Manage initrd | |
156 | */ | |
157 | #ifdef CONFIG_BLK_DEV_INITRD | |
158 | ||
a09fc446 | 159 | static int __init rd_start_early(char *p) |
1da177e4 | 160 | { |
a09fc446 | 161 | unsigned long start = memparse(p, &p); |
1da177e4 | 162 | |
875d43e7 | 163 | #ifdef CONFIG_64BIT |
a7837b76 FBH |
164 | /* Guess if the sign extension was forgotten by bootloader */ |
165 | if (start < XKPHYS) | |
166 | start = (int)start; | |
1da177e4 | 167 | #endif |
a09fc446 FBH |
168 | initrd_start = start; |
169 | initrd_end += start; | |
a09fc446 FBH |
170 | return 0; |
171 | } | |
172 | early_param("rd_start", rd_start_early); | |
173 | ||
174 | static int __init rd_size_early(char *p) | |
175 | { | |
176 | initrd_end += memparse(p, &p); | |
1da177e4 LT |
177 | return 0; |
178 | } | |
a09fc446 | 179 | early_param("rd_size", rd_size_early); |
1da177e4 | 180 | |
a7837b76 | 181 | /* it returns the next free pfn after initrd */ |
d2043ca8 FBH |
182 | static unsigned long __init init_initrd(void) |
183 | { | |
a7837b76 | 184 | unsigned long end; |
d2043ca8 | 185 | |
d2043ca8 | 186 | /* |
a09fc446 FBH |
187 | * Board specific code or command line parser should have |
188 | * already set up initrd_start and initrd_end. In these cases | |
189 | * perfom sanity checks and use them if all looks good. | |
d2043ca8 | 190 | */ |
32028f1f | 191 | if (!initrd_start || initrd_end <= initrd_start) |
a7837b76 | 192 | goto disable; |
a7837b76 | 193 | |
a7837b76 | 194 | if (initrd_start & ~PAGE_MASK) { |
a64ae7a2 | 195 | pr_err("initrd start must be page aligned\n"); |
a7837b76 | 196 | goto disable; |
d2043ca8 | 197 | } |
a7837b76 | 198 | if (initrd_start < PAGE_OFFSET) { |
a64ae7a2 | 199 | pr_err("initrd start < PAGE_OFFSET\n"); |
a7837b76 FBH |
200 | goto disable; |
201 | } | |
202 | ||
203 | /* | |
204 | * Sanitize initrd addresses. For example firmware | |
205 | * can't guess if they need to pass them through | |
206 | * 64-bits values if the kernel has been built in pure | |
207 | * 32-bit. We need also to switch from KSEG0 to XKPHYS | |
208 | * addresses now, so the code can now safely use __pa(). | |
209 | */ | |
210 | end = __pa(initrd_end); | |
211 | initrd_end = (unsigned long)__va(end); | |
212 | initrd_start = (unsigned long)__va(__pa(initrd_start)); | |
213 | ||
214 | ROOT_DEV = Root_RAM0; | |
215 | return PFN_UP(end); | |
216 | disable: | |
217 | initrd_start = 0; | |
218 | initrd_end = 0; | |
219 | return 0; | |
d2043ca8 FBH |
220 | } |
221 | ||
222 | static void __init finalize_initrd(void) | |
223 | { | |
224 | unsigned long size = initrd_end - initrd_start; | |
225 | ||
226 | if (size == 0) { | |
227 | printk(KERN_INFO "Initrd not found or empty"); | |
228 | goto disable; | |
229 | } | |
d4df6d4e | 230 | if (__pa(initrd_end) > PFN_PHYS(max_low_pfn)) { |
a64ae7a2 | 231 | printk(KERN_ERR "Initrd extends beyond end of memory"); |
d2043ca8 FBH |
232 | goto disable; |
233 | } | |
234 | ||
72a7fe39 | 235 | reserve_bootmem(__pa(initrd_start), size, BOOTMEM_DEFAULT); |
d2043ca8 FBH |
236 | initrd_below_start_ok = 1; |
237 | ||
a64ae7a2 MC |
238 | pr_info("Initial ramdisk at: 0x%lx (%lu bytes)\n", |
239 | initrd_start, size); | |
d2043ca8 FBH |
240 | return; |
241 | disable: | |
a64ae7a2 | 242 | printk(KERN_CONT " - disabling initrd\n"); |
d2043ca8 FBH |
243 | initrd_start = 0; |
244 | initrd_end = 0; | |
245 | } | |
246 | ||
247 | #else /* !CONFIG_BLK_DEV_INITRD */ | |
248 | ||
9ba126cf RB |
249 | static unsigned long __init init_initrd(void) |
250 | { | |
251 | return 0; | |
252 | } | |
253 | ||
d2043ca8 FBH |
254 | #define finalize_initrd() do {} while (0) |
255 | ||
256 | #endif | |
257 | ||
b6f1f0de FBH |
258 | /* |
259 | * Initialize the bootmem allocator. It also setup initrd related data | |
260 | * if needed. | |
261 | */ | |
d2043ca8 FBH |
262 | #ifdef CONFIG_SGI_IP27 |
263 | ||
b6f1f0de | 264 | static void __init bootmem_init(void) |
1da177e4 | 265 | { |
d2043ca8 FBH |
266 | init_initrd(); |
267 | finalize_initrd(); | |
268 | } | |
269 | ||
270 | #else /* !CONFIG_SGI_IP27 */ | |
271 | ||
272 | static void __init bootmem_init(void) | |
273 | { | |
e452e94e | 274 | unsigned long reserved_end; |
db84dc61 | 275 | unsigned long mapstart = ~0UL; |
1da177e4 LT |
276 | unsigned long bootmap_size; |
277 | int i; | |
1da177e4 LT |
278 | |
279 | /* | |
d2043ca8 FBH |
280 | * Init any data related to initrd. It's a nop if INITRD is |
281 | * not selected. Once that done we can determine the low bound | |
282 | * of usable memory. | |
1da177e4 | 283 | */ |
12e22e8e RB |
284 | reserved_end = max(init_initrd(), |
285 | (unsigned long) PFN_UP(__pa_symbol(&_end))); | |
1da177e4 | 286 | |
db84dc61 FBH |
287 | /* |
288 | * max_low_pfn is not a number of pages. The number of pages | |
289 | * of the system is given by 'max_low_pfn - min_low_pfn'. | |
290 | */ | |
291 | min_low_pfn = ~0UL; | |
292 | max_low_pfn = 0; | |
293 | ||
b6f1f0de FBH |
294 | /* |
295 | * Find the highest page frame number we have available. | |
296 | */ | |
1da177e4 LT |
297 | for (i = 0; i < boot_mem_map.nr_map; i++) { |
298 | unsigned long start, end; | |
299 | ||
300 | if (boot_mem_map.map[i].type != BOOT_MEM_RAM) | |
301 | continue; | |
302 | ||
303 | start = PFN_UP(boot_mem_map.map[i].addr); | |
304 | end = PFN_DOWN(boot_mem_map.map[i].addr | |
b6f1f0de | 305 | + boot_mem_map.map[i].size); |
1da177e4 | 306 | |
db84dc61 FBH |
307 | if (end > max_low_pfn) |
308 | max_low_pfn = end; | |
309 | if (start < min_low_pfn) | |
310 | min_low_pfn = start; | |
b6f1f0de | 311 | if (end <= reserved_end) |
1da177e4 | 312 | continue; |
b6f1f0de FBH |
313 | if (start >= mapstart) |
314 | continue; | |
315 | mapstart = max(reserved_end, start); | |
1da177e4 LT |
316 | } |
317 | ||
db84dc61 FBH |
318 | if (min_low_pfn >= max_low_pfn) |
319 | panic("Incorrect memory mapping !!!"); | |
6f284a2c | 320 | if (min_low_pfn > ARCH_PFN_OFFSET) { |
a64ae7a2 MC |
321 | pr_info("Wasting %lu bytes for tracking %lu unused pages\n", |
322 | (min_low_pfn - ARCH_PFN_OFFSET) * sizeof(struct page), | |
323 | min_low_pfn - ARCH_PFN_OFFSET); | |
6f284a2c | 324 | } else if (min_low_pfn < ARCH_PFN_OFFSET) { |
a64ae7a2 MC |
325 | pr_info("%lu free pages won't be used\n", |
326 | ARCH_PFN_OFFSET - min_low_pfn); | |
db84dc61 | 327 | } |
6f284a2c | 328 | min_low_pfn = ARCH_PFN_OFFSET; |
db84dc61 | 329 | |
1da177e4 LT |
330 | /* |
331 | * Determine low and high memory ranges | |
332 | */ | |
dc3bf353 | 333 | max_pfn = max_low_pfn; |
db84dc61 | 334 | if (max_low_pfn > PFN_DOWN(HIGHMEM_START)) { |
b6f1f0de FBH |
335 | #ifdef CONFIG_HIGHMEM |
336 | highstart_pfn = PFN_DOWN(HIGHMEM_START); | |
db84dc61 | 337 | highend_pfn = max_low_pfn; |
1da177e4 | 338 | #endif |
db84dc61 | 339 | max_low_pfn = PFN_DOWN(HIGHMEM_START); |
1da177e4 LT |
340 | } |
341 | ||
1da177e4 | 342 | /* |
b6f1f0de | 343 | * Initialize the boot-time allocator with low memory only. |
1da177e4 | 344 | */ |
db84dc61 FBH |
345 | bootmap_size = init_bootmem_node(NODE_DATA(0), mapstart, |
346 | min_low_pfn, max_low_pfn); | |
cce335ae RB |
347 | |
348 | ||
cce335ae RB |
349 | for (i = 0; i < boot_mem_map.nr_map; i++) { |
350 | unsigned long start, end; | |
351 | ||
352 | start = PFN_UP(boot_mem_map.map[i].addr); | |
353 | end = PFN_DOWN(boot_mem_map.map[i].addr | |
354 | + boot_mem_map.map[i].size); | |
355 | ||
e452e94e AN |
356 | if (start <= min_low_pfn) |
357 | start = min_low_pfn; | |
cce335ae RB |
358 | if (start >= end) |
359 | continue; | |
360 | ||
361 | #ifndef CONFIG_HIGHMEM | |
362 | if (end > max_low_pfn) | |
363 | end = max_low_pfn; | |
364 | ||
365 | /* | |
366 | * ... finally, is the area going away? | |
367 | */ | |
368 | if (end <= start) | |
369 | continue; | |
370 | #endif | |
371 | ||
9d15ffc8 | 372 | memblock_add_node(PFN_PHYS(start), PFN_PHYS(end - start), 0); |
cce335ae RB |
373 | } |
374 | ||
1da177e4 LT |
375 | /* |
376 | * Register fully available low RAM pages with the bootmem allocator. | |
377 | */ | |
378 | for (i = 0; i < boot_mem_map.nr_map; i++) { | |
b6f1f0de | 379 | unsigned long start, end, size; |
1da177e4 | 380 | |
43064c0c DD |
381 | start = PFN_UP(boot_mem_map.map[i].addr); |
382 | end = PFN_DOWN(boot_mem_map.map[i].addr | |
383 | + boot_mem_map.map[i].size); | |
384 | ||
1da177e4 LT |
385 | /* |
386 | * Reserve usable memory. | |
387 | */ | |
43064c0c DD |
388 | switch (boot_mem_map.map[i].type) { |
389 | case BOOT_MEM_RAM: | |
390 | break; | |
391 | case BOOT_MEM_INIT_RAM: | |
392 | memory_present(0, start, end); | |
1da177e4 | 393 | continue; |
43064c0c DD |
394 | default: |
395 | /* Not usable memory */ | |
396 | continue; | |
397 | } | |
1da177e4 | 398 | |
1da177e4 | 399 | /* |
b6f1f0de FBH |
400 | * We are rounding up the start address of usable memory |
401 | * and at the end of the usable range downwards. | |
1da177e4 | 402 | */ |
b6f1f0de | 403 | if (start >= max_low_pfn) |
1da177e4 | 404 | continue; |
b6f1f0de FBH |
405 | if (start < reserved_end) |
406 | start = reserved_end; | |
407 | if (end > max_low_pfn) | |
408 | end = max_low_pfn; | |
1da177e4 LT |
409 | |
410 | /* | |
b6f1f0de | 411 | * ... finally, is the area going away? |
1da177e4 | 412 | */ |
b6f1f0de | 413 | if (end <= start) |
1da177e4 | 414 | continue; |
b6f1f0de | 415 | size = end - start; |
1da177e4 LT |
416 | |
417 | /* Register lowmem ranges */ | |
b6f1f0de FBH |
418 | free_bootmem(PFN_PHYS(start), size << PAGE_SHIFT); |
419 | memory_present(0, start, end); | |
1da177e4 LT |
420 | } |
421 | ||
b6f1f0de FBH |
422 | /* |
423 | * Reserve the bootmap memory. | |
424 | */ | |
72a7fe39 | 425 | reserve_bootmem(PFN_PHYS(mapstart), bootmap_size, BOOTMEM_DEFAULT); |
b6f1f0de | 426 | |
d2043ca8 FBH |
427 | /* |
428 | * Reserve initrd memory if needed. | |
429 | */ | |
430 | finalize_initrd(); | |
1da177e4 LT |
431 | } |
432 | ||
d2043ca8 FBH |
433 | #endif /* CONFIG_SGI_IP27 */ |
434 | ||
2925aba4 | 435 | /* |
603e82ed | 436 | * arch_mem_init - initialize memory management subsystem |
2925aba4 RB |
437 | * |
438 | * o plat_mem_setup() detects the memory configuration and will record detected | |
439 | * memory areas using add_memory_region. | |
2925aba4 RB |
440 | * |
441 | * At this stage the memory configuration of the system is known to the | |
603e82ed | 442 | * kernel but generic memory management system is still entirely uninitialized. |
2925aba4 RB |
443 | * |
444 | * o bootmem_init() | |
445 | * o sparse_init() | |
446 | * o paging_init() | |
447 | * | |
448 | * At this stage the bootmem allocator is ready to use. | |
449 | * | |
450 | * NOTE: historically plat_mem_setup did the entire platform initialization. | |
451 | * This was rather impractical because it meant plat_mem_setup had to | |
452 | * get away without any kind of memory allocator. To keep old code from | |
453 | * breaking plat_setup was just renamed to plat_setup and a second platform | |
454 | * initialization hook for anything else was introduced. | |
455 | */ | |
456 | ||
982f6ffe | 457 | static int usermem __initdata; |
a09fc446 FBH |
458 | |
459 | static int __init early_parse_mem(char *p) | |
460 | { | |
461 | unsigned long start, size; | |
462 | ||
463 | /* | |
464 | * If a user specifies memory size, we | |
465 | * blow away any automatically generated | |
466 | * size. | |
467 | */ | |
468 | if (usermem == 0) { | |
469 | boot_mem_map.nr_map = 0; | |
470 | usermem = 1; | |
471 | } | |
472 | start = 0; | |
473 | size = memparse(p, &p); | |
474 | if (*p == '@') | |
475 | start = memparse(p + 1, &p); | |
476 | ||
477 | add_memory_region(start, size, BOOT_MEM_RAM); | |
478 | return 0; | |
479 | } | |
480 | early_param("mem", early_parse_mem); | |
2925aba4 RB |
481 | |
482 | static void __init arch_mem_init(char **cmdline_p) | |
483 | { | |
43064c0c DD |
484 | phys_t init_mem, init_end, init_size; |
485 | ||
a09fc446 FBH |
486 | extern void plat_mem_setup(void); |
487 | ||
2925aba4 RB |
488 | /* call board setup routine */ |
489 | plat_mem_setup(); | |
490 | ||
43064c0c DD |
491 | init_mem = PFN_UP(__pa_symbol(&__init_begin)) << PAGE_SHIFT; |
492 | init_end = PFN_DOWN(__pa_symbol(&__init_end)) << PAGE_SHIFT; | |
493 | init_size = init_end - init_mem; | |
494 | if (init_size) { | |
495 | /* Make sure it is in the boot_mem_map */ | |
496 | int i, found; | |
497 | found = 0; | |
498 | for (i = 0; i < boot_mem_map.nr_map; i++) { | |
499 | if (init_mem >= boot_mem_map.map[i].addr && | |
500 | init_mem < (boot_mem_map.map[i].addr + | |
501 | boot_mem_map.map[i].size)) { | |
502 | found = 1; | |
503 | break; | |
504 | } | |
505 | } | |
506 | if (!found) | |
507 | add_memory_region(init_mem, init_size, | |
508 | BOOT_MEM_INIT_RAM); | |
509 | } | |
510 | ||
a64ae7a2 | 511 | pr_info("Determined physical RAM map:\n"); |
a09fc446 FBH |
512 | print_memory_map(); |
513 | ||
6acc7d48 DV |
514 | #ifdef CONFIG_CMDLINE_BOOL |
515 | #ifdef CONFIG_CMDLINE_OVERRIDE | |
516 | strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE); | |
517 | #else | |
518 | if (builtin_cmdline[0]) { | |
519 | strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE); | |
520 | strlcat(arcs_cmdline, builtin_cmdline, COMMAND_LINE_SIZE); | |
521 | } | |
522 | strlcpy(boot_command_line, arcs_cmdline, COMMAND_LINE_SIZE); | |
523 | #endif | |
524 | #else | |
525 | strlcpy(boot_command_line, arcs_cmdline, COMMAND_LINE_SIZE); | |
526 | #endif | |
527 | strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE); | |
2925aba4 RB |
528 | |
529 | *cmdline_p = command_line; | |
530 | ||
a09fc446 FBH |
531 | parse_early_param(); |
532 | ||
533 | if (usermem) { | |
a64ae7a2 | 534 | pr_info("User-defined physical RAM map:\n"); |
a09fc446 FBH |
535 | print_memory_map(); |
536 | } | |
537 | ||
2925aba4 | 538 | bootmem_init(); |
f2ffa5ab | 539 | device_tree_init(); |
2925aba4 | 540 | sparse_init(); |
ee71b7d2 | 541 | plat_swiotlb_setup(); |
2925aba4 RB |
542 | paging_init(); |
543 | } | |
544 | ||
8df32c63 | 545 | static void __init resource_init(void) |
1da177e4 LT |
546 | { |
547 | int i; | |
548 | ||
6adb5fe7 RB |
549 | if (UNCAC_BASE != IO_BASE) |
550 | return; | |
551 | ||
f5bffe3a FBH |
552 | code_resource.start = __pa_symbol(&_text); |
553 | code_resource.end = __pa_symbol(&_etext) - 1; | |
554 | data_resource.start = __pa_symbol(&_etext); | |
555 | data_resource.end = __pa_symbol(&_edata) - 1; | |
1da177e4 LT |
556 | |
557 | /* | |
558 | * Request address space for all standard RAM. | |
559 | */ | |
560 | for (i = 0; i < boot_mem_map.nr_map; i++) { | |
561 | struct resource *res; | |
562 | unsigned long start, end; | |
563 | ||
564 | start = boot_mem_map.map[i].addr; | |
565 | end = boot_mem_map.map[i].addr + boot_mem_map.map[i].size - 1; | |
1c6fd44d | 566 | if (start >= HIGHMEM_START) |
1da177e4 | 567 | continue; |
1c6fd44d FBH |
568 | if (end >= HIGHMEM_START) |
569 | end = HIGHMEM_START - 1; | |
1da177e4 LT |
570 | |
571 | res = alloc_bootmem(sizeof(struct resource)); | |
572 | switch (boot_mem_map.map[i].type) { | |
573 | case BOOT_MEM_RAM: | |
43064c0c | 574 | case BOOT_MEM_INIT_RAM: |
1da177e4 LT |
575 | case BOOT_MEM_ROM_DATA: |
576 | res->name = "System RAM"; | |
577 | break; | |
578 | case BOOT_MEM_RESERVED: | |
579 | default: | |
580 | res->name = "reserved"; | |
581 | } | |
582 | ||
583 | res->start = start; | |
584 | res->end = end; | |
585 | ||
586 | res->flags = IORESOURCE_MEM | IORESOURCE_BUSY; | |
587 | request_resource(&iomem_resource, res); | |
588 | ||
589 | /* | |
590 | * We don't know which RAM region contains kernel data, | |
591 | * so we try it repeatedly and let the resource manager | |
592 | * test it. | |
593 | */ | |
594 | request_resource(res, &code_resource); | |
595 | request_resource(res, &data_resource); | |
596 | } | |
597 | } | |
598 | ||
1da177e4 LT |
599 | void __init setup_arch(char **cmdline_p) |
600 | { | |
601 | cpu_probe(); | |
602 | prom_init(); | |
36a88530 RB |
603 | |
604 | #ifdef CONFIG_EARLY_PRINTK | |
07cdb784 | 605 | setup_early_printk(); |
36a88530 | 606 | #endif |
1da177e4 | 607 | cpu_report(); |
20d60d99 | 608 | check_bugs_early(); |
1da177e4 LT |
609 | |
610 | #if defined(CONFIG_VT) | |
611 | #if defined(CONFIG_VGA_CONSOLE) | |
e0daad44 | 612 | conswitchp = &vga_con; |
1da177e4 | 613 | #elif defined(CONFIG_DUMMY_CONSOLE) |
e0daad44 | 614 | conswitchp = &dummy_con; |
1da177e4 LT |
615 | #endif |
616 | #endif | |
617 | ||
2925aba4 | 618 | arch_mem_init(cmdline_p); |
1da177e4 | 619 | |
1da177e4 | 620 | resource_init(); |
9b6695a8 | 621 | plat_smp_setup(); |
6650df3c DD |
622 | |
623 | cpu_cache_init(); | |
1da177e4 LT |
624 | } |
625 | ||
69a6c312 AN |
626 | unsigned long kernelsp[NR_CPUS]; |
627 | unsigned long fw_arg0, fw_arg1, fw_arg2, fw_arg3; | |
6312e0ee AN |
628 | |
629 | #ifdef CONFIG_DEBUG_FS | |
630 | struct dentry *mips_debugfs_dir; | |
631 | static int __init debugfs_mips(void) | |
632 | { | |
633 | struct dentry *d; | |
634 | ||
635 | d = debugfs_create_dir("mips", NULL); | |
b517531c Z |
636 | if (!d) |
637 | return -ENOMEM; | |
6312e0ee AN |
638 | mips_debugfs_dir = d; |
639 | return 0; | |
640 | } | |
641 | arch_initcall(debugfs_mips); | |
642 | #endif |