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Blackfin arch: move the init sections to the end of memory to help decrease memory...
[linux-2.6/btrfs-unstable.git] / arch / blackfin / kernel / setup.c
blobdfe06b09a9d4ea8cd215900fb43c42d89199f7c3
1 /*
2 * File: arch/blackfin/kernel/setup.c
3 * Based on:
4 * Author:
5 *
6 * Created:
7 * Description:
8 *
9 * Modified:
10 * Copyright 2004-2006 Analog Devices Inc.
11 *
12 * Bugs: Enter bugs at http://blackfin.uclinux.org/
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, see the file COPYING, or write
26 * to the Free Software Foundation, Inc.,
27 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
28 */
29
30 #include <linux/delay.h>
31 #include <linux/console.h>
32 #include <linux/bootmem.h>
33 #include <linux/seq_file.h>
34 #include <linux/cpu.h>
35 #include <linux/module.h>
36 #include <linux/tty.h>
37
38 #include <linux/ext2_fs.h>
39 #include <linux/cramfs_fs.h>
40 #include <linux/romfs_fs.h>
41
42 #include <asm/cplb.h>
43 #include <asm/cacheflush.h>
44 #include <asm/blackfin.h>
45 #include <asm/cplbinit.h>
46 #include <asm/fixed_code.h>
47 #include <asm/early_printk.h>
48
49 u16 _bfin_swrst;
50
51 unsigned long memory_start, memory_end, physical_mem_end;
52 unsigned long reserved_mem_dcache_on;
53 unsigned long reserved_mem_icache_on;
54 EXPORT_SYMBOL(memory_start);
55 EXPORT_SYMBOL(memory_end);
56 EXPORT_SYMBOL(physical_mem_end);
57 EXPORT_SYMBOL(_ramend);
58
59 #ifdef CONFIG_MTD_UCLINUX
60 unsigned long memory_mtd_end, memory_mtd_start, mtd_size;
61 unsigned long _ebss;
62 EXPORT_SYMBOL(memory_mtd_end);
63 EXPORT_SYMBOL(memory_mtd_start);
64 EXPORT_SYMBOL(mtd_size);
65 #endif
66
67 char __initdata command_line[COMMAND_LINE_SIZE];
68
69 void __init bf53x_cache_init(void)
70 {
71 #if defined(CONFIG_BFIN_DCACHE) || defined(CONFIG_BFIN_ICACHE)
72 generate_cpl_tables();
73 #endif
74
75 #ifdef CONFIG_BFIN_ICACHE
76 bfin_icache_init();
77 printk(KERN_INFO "Instruction Cache Enabled\n");
78 #endif
79
80 #ifdef CONFIG_BFIN_DCACHE
81 bfin_dcache_init();
82 printk(KERN_INFO "Data Cache Enabled"
83 # if defined CONFIG_BFIN_WB
84 " (write-back)"
85 # elif defined CONFIG_BFIN_WT
86 " (write-through)"
87 # endif
88 "\n");
89 #endif
90 }
91
92 void __init bf53x_relocate_l1_mem(void)
93 {
94 unsigned long l1_code_length;
95 unsigned long l1_data_a_length;
96 unsigned long l1_data_b_length;
97
98 l1_code_length = _etext_l1 - _stext_l1;
99 if (l1_code_length > L1_CODE_LENGTH)
100 l1_code_length = L1_CODE_LENGTH;
101 /* cannot complain as printk is not available as yet.
102 * But we can continue booting and complain later!
103 */
104
105 /* Copy _stext_l1 to _etext_l1 to L1 instruction SRAM */
106 dma_memcpy(_stext_l1, _l1_lma_start, l1_code_length);
107
108 l1_data_a_length = _ebss_l1 - _sdata_l1;
109 if (l1_data_a_length > L1_DATA_A_LENGTH)
110 l1_data_a_length = L1_DATA_A_LENGTH;
111
112 /* Copy _sdata_l1 to _ebss_l1 to L1 data bank A SRAM */
113 dma_memcpy(_sdata_l1, _l1_lma_start + l1_code_length, l1_data_a_length);
114
115 l1_data_b_length = _ebss_b_l1 - _sdata_b_l1;
116 if (l1_data_b_length > L1_DATA_B_LENGTH)
117 l1_data_b_length = L1_DATA_B_LENGTH;
118
119 /* Copy _sdata_b_l1 to _ebss_b_l1 to L1 data bank B SRAM */
120 dma_memcpy(_sdata_b_l1, _l1_lma_start + l1_code_length +
121 l1_data_a_length, l1_data_b_length);
122
123 }
124
125 /*
126 * Initial parsing of the command line. Currently, we support:
127 * - Controlling the linux memory size: mem=xxx[KMG]
128 * - Controlling the physical memory size: max_mem=xxx[KMG][$][#]
129 * $ -> reserved memory is dcacheable
130 * # -> reserved memory is icacheable
131 */
132 static __init void parse_cmdline_early(char *cmdline_p)
133 {
134 char c = ' ', *to = cmdline_p;
135 unsigned int memsize;
136 for (;;) {
137 if (c == ' ') {
138
139 if (!memcmp(to, "mem=", 4)) {
140 to += 4;
141 memsize = memparse(to, &to);
142 if (memsize)
143 _ramend = memsize;
144
145 } else if (!memcmp(to, "max_mem=", 8)) {
146 to += 8;
147 memsize = memparse(to, &to);
148 if (memsize) {
149 physical_mem_end = memsize;
150 if (*to != ' ') {
151 if (*to == '$'
152 || *(to + 1) == '$')
153 reserved_mem_dcache_on =
154 1;
155 if (*to == '#'
156 || *(to + 1) == '#')
157 reserved_mem_icache_on =
158 1;
159 }
160 }
161 } else if (!memcmp(to, "earlyprintk=", 12)) {
162 to += 12;
163 setup_early_printk(to);
164 }
165 }
166 c = *(to++);
167 if (!c)
168 break;
169 }
170 }
171
172 void __init setup_arch(char **cmdline_p)
173 {
174 int bootmap_size;
175 unsigned long l1_length, sclk, cclk;
176 #ifdef CONFIG_MTD_UCLINUX
177 unsigned long mtd_phys = 0;
178 #endif
179
180 #ifdef CONFIG_DUMMY_CONSOLE
181 conswitchp = &dummy_con;
182 #endif
183
184 #if defined(CONFIG_CMDLINE_BOOL)
185 strncpy(&command_line[0], CONFIG_CMDLINE, sizeof(command_line));
186 command_line[sizeof(command_line) - 1] = 0;
187 #endif
188
189 /* Keep a copy of command line */
190 *cmdline_p = &command_line[0];
191 memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
192 boot_command_line[COMMAND_LINE_SIZE - 1] = '\0';
193
194 /* setup memory defaults from the user config */
195 physical_mem_end = 0;
196 _ramend = CONFIG_MEM_SIZE * 1024 * 1024;
197
198 parse_cmdline_early(&command_line[0]);
199
200 cclk = get_cclk();
201 sclk = get_sclk();
202
203 #if !defined(CONFIG_BFIN_KERNEL_CLOCK)
204 if (ANOMALY_05000273 && cclk == sclk)
205 panic("ANOMALY 05000273, SCLK can not be same as CCLK");
206 #endif
207
208 #ifdef BF561_FAMILY
209 if (ANOMALY_05000266) {
210 bfin_read_IMDMA_D0_IRQ_STATUS();
211 bfin_read_IMDMA_D1_IRQ_STATUS();
212 }
213 #endif
214
215 printk(KERN_INFO "Hardware Trace ");
216 if (bfin_read_TBUFCTL() & 0x1 )
217 printk("Active ");
218 else
219 printk("Off ");
220 if (bfin_read_TBUFCTL() & 0x2)
221 printk("and Enabled\n");
222 else
223 printk("and Disabled\n");
224
225
226 #if defined(CONFIG_CHR_DEV_FLASH) || defined(CONFIG_BLK_DEV_FLASH)
227 /* we need to initialize the Flashrom device here since we might
228 * do things with flash early on in the boot
229 */
230 flash_probe();
231 #endif
232
233 if (physical_mem_end == 0)
234 physical_mem_end = _ramend;
235
236 /* by now the stack is part of the init task */
237 memory_end = _ramend - DMA_UNCACHED_REGION;
238
239 _ramstart = (unsigned long)_end;
240 memory_start = PAGE_ALIGN(_ramstart);
241
242 #if defined(CONFIG_MTD_UCLINUX)
243 /* generic memory mapped MTD driver */
244 memory_mtd_end = memory_end;
245
246 mtd_phys = _ramstart;
247 mtd_size = PAGE_ALIGN(*((unsigned long *)(mtd_phys + 8)));
248
249 # if defined(CONFIG_EXT2_FS) || defined(CONFIG_EXT3_FS)
250 if (*((unsigned short *)(mtd_phys + 0x438)) == EXT2_SUPER_MAGIC)
251 mtd_size =
252 PAGE_ALIGN(*((unsigned long *)(mtd_phys + 0x404)) << 10);
253 # endif
254
255 # if defined(CONFIG_CRAMFS)
256 if (*((unsigned long *)(mtd_phys)) == CRAMFS_MAGIC)
257 mtd_size = PAGE_ALIGN(*((unsigned long *)(mtd_phys + 0x4)));
258 # endif
259
260 # if defined(CONFIG_ROMFS_FS)
261 if (((unsigned long *)mtd_phys)[0] == ROMSB_WORD0
262 && ((unsigned long *)mtd_phys)[1] == ROMSB_WORD1)
263 mtd_size =
264 PAGE_ALIGN(be32_to_cpu(((unsigned long *)mtd_phys)[2]));
265 # if (defined(CONFIG_BFIN_ICACHE) && ANOMALY_05000263)
266 /* Due to a Hardware Anomaly we need to limit the size of usable
267 * instruction memory to max 60MB, 56 if HUNT_FOR_ZERO is on
268 * 05000263 - Hardware loop corrupted when taking an ICPLB exception
269 */
270 # if (defined(CONFIG_DEBUG_HUNT_FOR_ZERO))
271 if (memory_end >= 56 * 1024 * 1024)
272 memory_end = 56 * 1024 * 1024;
273 # else
274 if (memory_end >= 60 * 1024 * 1024)
275 memory_end = 60 * 1024 * 1024;
276 # endif /* CONFIG_DEBUG_HUNT_FOR_ZERO */
277 # endif /* ANOMALY_05000263 */
278 # endif /* CONFIG_ROMFS_FS */
279
280 memory_end -= mtd_size;
281
282 if (mtd_size == 0) {
283 console_init();
284 panic("Don't boot kernel without rootfs attached.\n");
285 }
286
287 /* Relocate MTD image to the top of memory after the uncached memory area */
288 dma_memcpy((char *)memory_end, _end, mtd_size);
289
290 memory_mtd_start = memory_end;
291 _ebss = memory_mtd_start; /* define _ebss for compatible */
292 #endif /* CONFIG_MTD_UCLINUX */
293
294 #if (defined(CONFIG_BFIN_ICACHE) && ANOMALY_05000263)
295 /* Due to a Hardware Anomaly we need to limit the size of usable
296 * instruction memory to max 60MB, 56 if HUNT_FOR_ZERO is on
297 * 05000263 - Hardware loop corrupted when taking an ICPLB exception
298 */
299 #if (defined(CONFIG_DEBUG_HUNT_FOR_ZERO))
300 if (memory_end >= 56 * 1024 * 1024)
301 memory_end = 56 * 1024 * 1024;
302 #else
303 if (memory_end >= 60 * 1024 * 1024)
304 memory_end = 60 * 1024 * 1024;
305 #endif /* CONFIG_DEBUG_HUNT_FOR_ZERO */
306 printk(KERN_NOTICE "Warning: limiting memory to %liMB due to hardware anomaly 05000263\n", memory_end >> 20);
307 #endif /* ANOMALY_05000263 */
308
309 #if !defined(CONFIG_MTD_UCLINUX)
310 memory_end -= SIZE_4K; /*In case there is no valid CPLB behind memory_end make sure we don't get to close*/
311 #endif
312 init_mm.start_code = (unsigned long)_stext;
313 init_mm.end_code = (unsigned long)_etext;
314 init_mm.end_data = (unsigned long)_edata;
315 init_mm.brk = (unsigned long)0;
316
317 init_leds();
318
319 _bfin_swrst = bfin_read_SWRST();
320
321 if (_bfin_swrst & RESET_DOUBLE)
322 printk(KERN_INFO "Recovering from Double Fault event\n");
323 else if (_bfin_swrst & RESET_WDOG)
324 printk(KERN_INFO "Recovering from Watchdog event\n");
325 else if (_bfin_swrst & RESET_SOFTWARE)
326 printk(KERN_NOTICE "Reset caused by Software reset\n");
327
328 printk(KERN_INFO "Blackfin support (C) 2004-2007 Analog Devices, Inc.\n");
329 if (bfin_compiled_revid() == 0xffff)
330 printk(KERN_INFO "Compiled for ADSP-%s Rev any\n", CPU);
331 else if (bfin_compiled_revid() == -1)
332 printk(KERN_INFO "Compiled for ADSP-%s Rev none\n", CPU);
333 else
334 printk(KERN_INFO "Compiled for ADSP-%s Rev 0.%d\n", CPU, bfin_compiled_revid());
335 if (bfin_revid() != bfin_compiled_revid()) {
336 if (bfin_compiled_revid() == -1)
337 printk(KERN_ERR "Warning: Compiled for Rev none, but running on Rev %d\n",
338 bfin_revid());
339 else if (bfin_compiled_revid() != 0xffff)
340 printk(KERN_ERR "Warning: Compiled for Rev %d, but running on Rev %d\n",
341 bfin_compiled_revid(), bfin_revid());
342 }
343 if (bfin_revid() < SUPPORTED_REVID)
344 printk(KERN_ERR "Warning: Unsupported Chip Revision ADSP-%s Rev 0.%d detected\n",
345 CPU, bfin_revid());
346 printk(KERN_INFO "Blackfin Linux support by http://blackfin.uclinux.org/\n");
347
348 printk(KERN_INFO "Processor Speed: %lu MHz core clock and %lu MHz System Clock\n",
349 cclk / 1000000, sclk / 1000000);
350
351 if (ANOMALY_05000273 && (cclk >> 1) <= sclk)
352 printk("\n\n\nANOMALY_05000273: CCLK must be >= 2*SCLK !!!\n\n\n");
353
354 printk(KERN_INFO "Board Memory: %ldMB\n", physical_mem_end >> 20);
355 printk(KERN_INFO "Kernel Managed Memory: %ldMB\n", _ramend >> 20);
356
357 printk(KERN_INFO "Memory map:\n"
358 KERN_INFO " text = 0x%p-0x%p\n"
359 KERN_INFO " rodata = 0x%p-0x%p\n"
360 KERN_INFO " bss = 0x%p-0x%p\n"
361 KERN_INFO " data = 0x%p-0x%p\n"
362 KERN_INFO " stack = 0x%p-0x%p\n"
363 KERN_INFO " init = 0x%p-0x%p\n"
364 KERN_INFO " available = 0x%p-0x%p\n"
365 #ifdef CONFIG_MTD_UCLINUX
366 KERN_INFO " rootfs = 0x%p-0x%p\n"
367 #endif
368 #if DMA_UNCACHED_REGION > 0
369 KERN_INFO " DMA Zone = 0x%p-0x%p\n"
370 #endif
371 , _stext, _etext,
372 __start_rodata, __end_rodata,
373 __bss_start, __bss_stop,
374 _sdata, _edata,
375 (void *)&init_thread_union, (void *)((int)(&init_thread_union) + 0x2000),
376 __init_begin, __init_end,
377 (void *)_ramstart, (void *)memory_end
378 #ifdef CONFIG_MTD_UCLINUX
379 , (void *)memory_mtd_start, (void *)(memory_mtd_start + mtd_size)
380 #endif
381 #if DMA_UNCACHED_REGION > 0
382 , (void *)(_ramend - DMA_UNCACHED_REGION), (void *)(_ramend)
383 #endif
384 );
385
386 /*
387 * give all the memory to the bootmap allocator, tell it to put the
388 * boot mem_map at the start of memory
389 */
390 bootmap_size = init_bootmem_node(NODE_DATA(0), memory_start >> PAGE_SHIFT, /* map goes here */
391 PAGE_OFFSET >> PAGE_SHIFT,
392 memory_end >> PAGE_SHIFT);
393 /*
394 * free the usable memory, we have to make sure we do not free
395 * the bootmem bitmap so we then reserve it after freeing it :-)
396 */
397 free_bootmem(memory_start, memory_end - memory_start);
398
399 reserve_bootmem(memory_start, bootmap_size);
400 /*
401 * get kmalloc into gear
402 */
403 paging_init();
404
405 /* check the size of the l1 area */
406 l1_length = _etext_l1 - _stext_l1;
407 if (l1_length > L1_CODE_LENGTH)
408 panic("L1 code memory overflow\n");
409
410 l1_length = _ebss_l1 - _sdata_l1;
411 if (l1_length > L1_DATA_A_LENGTH)
412 panic("L1 data memory overflow\n");
413
414 /* Copy atomic sequences to their fixed location, and sanity check that
415 these locations are the ones that we advertise to userspace. */
416 memcpy((void *)FIXED_CODE_START, &fixed_code_start,
417 FIXED_CODE_END - FIXED_CODE_START);
418 BUG_ON((char *)&sigreturn_stub - (char *)&fixed_code_start
419 != SIGRETURN_STUB - FIXED_CODE_START);
420 BUG_ON((char *)&atomic_xchg32 - (char *)&fixed_code_start
421 != ATOMIC_XCHG32 - FIXED_CODE_START);
422 BUG_ON((char *)&atomic_cas32 - (char *)&fixed_code_start
423 != ATOMIC_CAS32 - FIXED_CODE_START);
424 BUG_ON((char *)&atomic_add32 - (char *)&fixed_code_start
425 != ATOMIC_ADD32 - FIXED_CODE_START);
426 BUG_ON((char *)&atomic_sub32 - (char *)&fixed_code_start
427 != ATOMIC_SUB32 - FIXED_CODE_START);
428 BUG_ON((char *)&atomic_ior32 - (char *)&fixed_code_start
429 != ATOMIC_IOR32 - FIXED_CODE_START);
430 BUG_ON((char *)&atomic_and32 - (char *)&fixed_code_start
431 != ATOMIC_AND32 - FIXED_CODE_START);
432 BUG_ON((char *)&atomic_xor32 - (char *)&fixed_code_start
433 != ATOMIC_XOR32 - FIXED_CODE_START);
434 BUG_ON((char *)&safe_user_instruction - (char *)&fixed_code_start
435 != SAFE_USER_INSTRUCTION - FIXED_CODE_START);
436
437 init_exception_vectors();
438 bf53x_cache_init();
439 }
440
441 static int __init topology_init(void)
442 {
443 #if defined (CONFIG_BF561)
444 static struct cpu cpu[2];
445 register_cpu(&cpu[0], 0);
446 register_cpu(&cpu[1], 1);
447 return 0;
448 #else
449 static struct cpu cpu[1];
450 return register_cpu(cpu, 0);
451 #endif
452 }
453
454 subsys_initcall(topology_init);
455
456 static u_long get_vco(void)
457 {
458 u_long msel;
459 u_long vco;
460
461 msel = (bfin_read_PLL_CTL() >> 9) & 0x3F;
462 if (0 == msel)
463 msel = 64;
464
465 vco = CONFIG_CLKIN_HZ;
466 vco >>= (1 & bfin_read_PLL_CTL()); /* DF bit */
467 vco = msel * vco;
468 return vco;
469 }
470
471 /* Get the Core clock */
472 u_long get_cclk(void)
473 {
474 u_long csel, ssel;
475 if (bfin_read_PLL_STAT() & 0x1)
476 return CONFIG_CLKIN_HZ;
477
478 ssel = bfin_read_PLL_DIV();
479 csel = ((ssel >> 4) & 0x03);
480 ssel &= 0xf;
481 if (ssel && ssel < (1 << csel)) /* SCLK > CCLK */
482 return get_vco() / ssel;
483 return get_vco() >> csel;
484 }
485 EXPORT_SYMBOL(get_cclk);
486
487 /* Get the System clock */
488 u_long get_sclk(void)
489 {
490 u_long ssel;
491
492 if (bfin_read_PLL_STAT() & 0x1)
493 return CONFIG_CLKIN_HZ;
494
495 ssel = (bfin_read_PLL_DIV() & 0xf);
496 if (0 == ssel) {
497 printk(KERN_WARNING "Invalid System Clock\n");
498 ssel = 1;
499 }
500
501 return get_vco() / ssel;
502 }
503 EXPORT_SYMBOL(get_sclk);
504
505 unsigned long sclk_to_usecs(unsigned long sclk)
506 {
507 return (USEC_PER_SEC * (u64)sclk) / get_sclk();
508 }
509 EXPORT_SYMBOL(sclk_to_usecs);
510
511 unsigned long usecs_to_sclk(unsigned long usecs)
512 {
513 return (get_sclk() * (u64)usecs) / USEC_PER_SEC;
514 }
515 EXPORT_SYMBOL(usecs_to_sclk);
516
517 /*
518 * Get CPU information for use by the procfs.
519 */
520 static int show_cpuinfo(struct seq_file *m, void *v)
521 {
522 char *cpu, *mmu, *fpu, *vendor, *cache;
523 uint32_t revid;
524
525 u_long cclk = 0, sclk = 0;
526 u_int dcache_size = 0, dsup_banks = 0;
527
528 cpu = CPU;
529 mmu = "none";
530 fpu = "none";
531 revid = bfin_revid();
532
533 cclk = get_cclk();
534 sclk = get_sclk();
535
536 switch (bfin_read_CHIPID() & CHIPID_MANUFACTURE) {
537 case 0xca:
538 vendor = "Analog Devices";
539 break;
540 default:
541 vendor = "unknown";
542 break;
543 }
544
545 seq_printf(m, "processor\t: %d\n"
546 "vendor_id\t: %s\n"
547 "cpu family\t: 0x%x\n"
548 "model name\t: ADSP-%s %lu(MHz CCLK) %lu(MHz SCLK)\n"
549 "stepping\t: %d\n",
550 0,
551 vendor,
552 (bfin_read_CHIPID() & CHIPID_FAMILY),
553 cpu, cclk/1000000, sclk/1000000,
554 revid);
555
556 seq_printf(m, "cpu MHz\t\t: %lu.%03lu/%lu.%03lu\n",
557 cclk/1000000, cclk%1000000,
558 sclk/1000000, sclk%1000000);
559 seq_printf(m, "bogomips\t: %lu.%02lu\n"
560 "Calibration\t: %lu loops\n",
561 (loops_per_jiffy * HZ) / 500000,
562 ((loops_per_jiffy * HZ) / 5000) % 100,
563 (loops_per_jiffy * HZ));
564
565 /* Check Cache configutation */
566 switch (bfin_read_DMEM_CONTROL() & (1 << DMC0_P | 1 << DMC1_P)) {
567 case ACACHE_BSRAM:
568 cache = "dbank-A/B\t: cache/sram";
569 dcache_size = 16;
570 dsup_banks = 1;
571 break;
572 case ACACHE_BCACHE:
573 cache = "dbank-A/B\t: cache/cache";
574 dcache_size = 32;
575 dsup_banks = 2;
576 break;
577 case ASRAM_BSRAM:
578 cache = "dbank-A/B\t: sram/sram";
579 dcache_size = 0;
580 dsup_banks = 0;
581 break;
582 default:
583 cache = "unknown";
584 dcache_size = 0;
585 dsup_banks = 0;
586 break;
587 }
588
589 /* Is it turned on? */
590 if (!((bfin_read_DMEM_CONTROL()) & (ENDCPLB | DMC_ENABLE)))
591 dcache_size = 0;
592
593 seq_printf(m, "cache size\t: %d KB(L1 icache) "
594 "%d KB(L1 dcache-%s) %d KB(L2 cache)\n",
595 BFIN_ICACHESIZE / 1024, dcache_size,
596 #if defined CONFIG_BFIN_WB
597 "wb"
598 #elif defined CONFIG_BFIN_WT
599 "wt"
600 #endif
601 "", 0);
602
603 seq_printf(m, "%s\n", cache);
604
605 seq_printf(m, "icache setup\t: %d Sub-banks/%d Ways, %d Lines/Way\n",
606 BFIN_ISUBBANKS, BFIN_IWAYS, BFIN_ILINES);
607 seq_printf(m,
608 "dcache setup\t: %d Super-banks/%d Sub-banks/%d Ways, %d Lines/Way\n",
609 dsup_banks, BFIN_DSUBBANKS, BFIN_DWAYS,
610 BFIN_DLINES);
611 #ifdef CONFIG_BFIN_ICACHE_LOCK
612 switch (read_iloc()) {
613 case WAY0_L:
614 seq_printf(m, "Way0 Locked-Down\n");
615 break;
616 case WAY1_L:
617 seq_printf(m, "Way1 Locked-Down\n");
618 break;
619 case WAY01_L:
620 seq_printf(m, "Way0,Way1 Locked-Down\n");
621 break;
622 case WAY2_L:
623 seq_printf(m, "Way2 Locked-Down\n");
624 break;
625 case WAY02_L:
626 seq_printf(m, "Way0,Way2 Locked-Down\n");
627 break;
628 case WAY12_L:
629 seq_printf(m, "Way1,Way2 Locked-Down\n");
630 break;
631 case WAY012_L:
632 seq_printf(m, "Way0,Way1 & Way2 Locked-Down\n");
633 break;
634 case WAY3_L:
635 seq_printf(m, "Way3 Locked-Down\n");
636 break;
637 case WAY03_L:
638 seq_printf(m, "Way0,Way3 Locked-Down\n");
639 break;
640 case WAY13_L:
641 seq_printf(m, "Way1,Way3 Locked-Down\n");
642 break;
643 case WAY013_L:
644 seq_printf(m, "Way 0,Way1,Way3 Locked-Down\n");
645 break;
646 case WAY32_L:
647 seq_printf(m, "Way3,Way2 Locked-Down\n");
648 break;
649 case WAY320_L:
650 seq_printf(m, "Way3,Way2,Way0 Locked-Down\n");
651 break;
652 case WAY321_L:
653 seq_printf(m, "Way3,Way2,Way1 Locked-Down\n");
654 break;
655 case WAYALL_L:
656 seq_printf(m, "All Ways are locked\n");
657 break;
658 default:
659 seq_printf(m, "No Ways are locked\n");
660 }
661 #endif
662
663 seq_printf(m, "board name\t: %s\n", bfin_board_name);
664 seq_printf(m, "board memory\t: %ld kB (0x%p -> 0x%p)\n",
665 physical_mem_end >> 10, (void *)0, (void *)physical_mem_end);
666 seq_printf(m, "kernel memory\t: %d kB (0x%p -> 0x%p)\n",
667 ((int)memory_end - (int)_stext) >> 10,
668 _stext,
669 (void *)memory_end);
670
671 return 0;
672 }
673
674 static void *c_start(struct seq_file *m, loff_t *pos)
675 {
676 return *pos < NR_CPUS ? ((void *)0x12345678) : NULL;
677 }
678
679 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
680 {
681 ++*pos;
682 return c_start(m, pos);
683 }
684
685 static void c_stop(struct seq_file *m, void *v)
686 {
687 }
688
689 struct seq_operations cpuinfo_op = {
690 .start = c_start,
691 .next = c_next,
692 .stop = c_stop,
693 .show = show_cpuinfo,
694 };
695
696 void __init cmdline_init(const char *r0)
697 {
698 if (r0)
699 strncpy(command_line, r0, COMMAND_LINE_SIZE);
700 }
(deprecated) Btrfs devel tree