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