procfs: constify function pointer tables
[linux-2.6.git] / arch / blackfin / kernel / setup.c
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/div64.h>
47 #include <asm/fixed_code.h>
48 #include <asm/early_printk.h>
49
50 u16 _bfin_swrst;
51
52 unsigned long memory_start, memory_end, physical_mem_end;
53 unsigned long reserved_mem_dcache_on;
54 unsigned long reserved_mem_icache_on;
55 EXPORT_SYMBOL(memory_start);
56 EXPORT_SYMBOL(memory_end);
57 EXPORT_SYMBOL(physical_mem_end);
58 EXPORT_SYMBOL(_ramend);
59
60 #ifdef CONFIG_MTD_UCLINUX
61 unsigned long memory_mtd_end, memory_mtd_start, mtd_size;
62 unsigned long _ebss;
63 EXPORT_SYMBOL(memory_mtd_end);
64 EXPORT_SYMBOL(memory_mtd_start);
65 EXPORT_SYMBOL(mtd_size);
66 #endif
67
68 char __initdata command_line[COMMAND_LINE_SIZE];
69
70 void __init bf53x_cache_init(void)
71 {
72 #if defined(CONFIG_BFIN_DCACHE) || defined(CONFIG_BFIN_ICACHE)
73         generate_cpl_tables();
74 #endif
75
76 #ifdef CONFIG_BFIN_ICACHE
77         bfin_icache_init();
78         printk(KERN_INFO "Instruction Cache Enabled\n");
79 #endif
80
81 #ifdef CONFIG_BFIN_DCACHE
82         bfin_dcache_init();
83         printk(KERN_INFO "Data Cache Enabled"
84 # if defined CONFIG_BFIN_WB
85                 " (write-back)"
86 # elif defined CONFIG_BFIN_WT
87                 " (write-through)"
88 # endif
89                 "\n");
90 #endif
91 }
92
93 void __init bf53x_relocate_l1_mem(void)
94 {
95         unsigned long l1_code_length;
96         unsigned long l1_data_a_length;
97         unsigned long l1_data_b_length;
98
99         l1_code_length = _etext_l1 - _stext_l1;
100         if (l1_code_length > L1_CODE_LENGTH)
101                 l1_code_length = L1_CODE_LENGTH;
102         /* cannot complain as printk is not available as yet.
103          * But we can continue booting and complain later!
104          */
105
106         /* Copy _stext_l1 to _etext_l1 to L1 instruction SRAM */
107         dma_memcpy(_stext_l1, _l1_lma_start, l1_code_length);
108
109         l1_data_a_length = _ebss_l1 - _sdata_l1;
110         if (l1_data_a_length > L1_DATA_A_LENGTH)
111                 l1_data_a_length = L1_DATA_A_LENGTH;
112
113         /* Copy _sdata_l1 to _ebss_l1 to L1 data bank A SRAM */
114         dma_memcpy(_sdata_l1, _l1_lma_start + l1_code_length, l1_data_a_length);
115
116         l1_data_b_length = _ebss_b_l1 - _sdata_b_l1;
117         if (l1_data_b_length > L1_DATA_B_LENGTH)
118                 l1_data_b_length = L1_DATA_B_LENGTH;
119
120         /* Copy _sdata_b_l1 to _ebss_b_l1 to L1 data bank B SRAM */
121         dma_memcpy(_sdata_b_l1, _l1_lma_start + l1_code_length +
122                         l1_data_a_length, l1_data_b_length);
123
124 }
125
126 /*
127  * Initial parsing of the command line.  Currently, we support:
128  *  - Controlling the linux memory size: mem=xxx[KMG]
129  *  - Controlling the physical memory size: max_mem=xxx[KMG][$][#]
130  *       $ -> reserved memory is dcacheable
131  *       # -> reserved memory is icacheable
132  */
133 static __init void parse_cmdline_early(char *cmdline_p)
134 {
135         char c = ' ', *to = cmdline_p;
136         unsigned int memsize;
137         for (;;) {
138                 if (c == ' ') {
139
140                         if (!memcmp(to, "mem=", 4)) {
141                                 to += 4;
142                                 memsize = memparse(to, &to);
143                                 if (memsize)
144                                         _ramend = memsize;
145
146                         } else if (!memcmp(to, "max_mem=", 8)) {
147                                 to += 8;
148                                 memsize = memparse(to, &to);
149                                 if (memsize) {
150                                         physical_mem_end = memsize;
151                                         if (*to != ' ') {
152                                                 if (*to == '$'
153                                                     || *(to + 1) == '$')
154                                                         reserved_mem_dcache_on =
155                                                             1;
156                                                 if (*to == '#'
157                                                     || *(to + 1) == '#')
158                                                         reserved_mem_icache_on =
159                                                             1;
160                                         }
161                                 }
162                         } else if (!memcmp(to, "earlyprintk=", 12)) {
163                                 to += 12;
164                                 setup_early_printk(to);
165                         }
166                 }
167                 c = *(to++);
168                 if (!c)
169                         break;
170         }
171 }
172
173 void __init setup_arch(char **cmdline_p)
174 {
175         int bootmap_size;
176         unsigned long l1_length, sclk, cclk;
177 #ifdef CONFIG_MTD_UCLINUX
178         unsigned long mtd_phys = 0;
179 #endif
180
181 #ifdef CONFIG_DUMMY_CONSOLE
182         conswitchp = &dummy_con;
183 #endif
184
185 #if defined(CONFIG_CMDLINE_BOOL)
186         strncpy(&command_line[0], CONFIG_CMDLINE, sizeof(command_line));
187         command_line[sizeof(command_line) - 1] = 0;
188 #endif
189
190         /* Keep a copy of command line */
191         *cmdline_p = &command_line[0];
192         memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
193         boot_command_line[COMMAND_LINE_SIZE - 1] = '\0';
194
195         /* setup memory defaults from the user config */
196         physical_mem_end = 0;
197         _ramend = CONFIG_MEM_SIZE * 1024 * 1024;
198
199         parse_cmdline_early(&command_line[0]);
200
201         cclk = get_cclk();
202         sclk = get_sclk();
203
204 #if !defined(CONFIG_BFIN_KERNEL_CLOCK)
205         if (ANOMALY_05000273 && cclk == sclk)
206                 panic("ANOMALY 05000273, SCLK can not be same as CCLK");
207 #endif
208
209 #ifdef BF561_FAMILY
210         if (ANOMALY_05000266) {
211                 bfin_read_IMDMA_D0_IRQ_STATUS();
212                 bfin_read_IMDMA_D1_IRQ_STATUS();
213         }
214 #endif
215
216         printk(KERN_INFO "Hardware Trace ");
217         if (bfin_read_TBUFCTL() & 0x1 )
218                 printk("Active ");
219         else
220                 printk("Off ");
221         if (bfin_read_TBUFCTL() & 0x2)
222                 printk("and Enabled\n");
223         else
224         printk("and Disabled\n");
225
226
227 #if defined(CONFIG_CHR_DEV_FLASH) || defined(CONFIG_BLK_DEV_FLASH)
228         /* we need to initialize the Flashrom device here since we might
229          * do things with flash early on in the boot
230          */
231         flash_probe();
232 #endif
233
234         if (physical_mem_end == 0)
235                 physical_mem_end = _ramend;
236
237         /* by now the stack is part of the init task */
238         memory_end = _ramend - DMA_UNCACHED_REGION;
239
240         _ramstart = (unsigned long)__bss_stop;
241         _rambase = (unsigned long)_stext;
242 #ifdef CONFIG_MPU
243         /* Round up to multiple of 4MB.  */
244         memory_start = (_ramstart + 0x3fffff) & ~0x3fffff;
245 #else
246         memory_start = PAGE_ALIGN(_ramstart);
247 #endif
248
249 #if defined(CONFIG_MTD_UCLINUX)
250         /* generic memory mapped MTD driver */
251         memory_mtd_end = memory_end;
252
253         mtd_phys = _ramstart;
254         mtd_size = PAGE_ALIGN(*((unsigned long *)(mtd_phys + 8)));
255
256 # if defined(CONFIG_EXT2_FS) || defined(CONFIG_EXT3_FS)
257         if (*((unsigned short *)(mtd_phys + 0x438)) == EXT2_SUPER_MAGIC)
258                 mtd_size =
259                     PAGE_ALIGN(*((unsigned long *)(mtd_phys + 0x404)) << 10);
260 # endif
261
262 # if defined(CONFIG_CRAMFS)
263         if (*((unsigned long *)(mtd_phys)) == CRAMFS_MAGIC)
264                 mtd_size = PAGE_ALIGN(*((unsigned long *)(mtd_phys + 0x4)));
265 # endif
266
267 # if defined(CONFIG_ROMFS_FS)
268         if (((unsigned long *)mtd_phys)[0] == ROMSB_WORD0
269             && ((unsigned long *)mtd_phys)[1] == ROMSB_WORD1)
270                 mtd_size =
271                     PAGE_ALIGN(be32_to_cpu(((unsigned long *)mtd_phys)[2]));
272 #  if (defined(CONFIG_BFIN_ICACHE) && ANOMALY_05000263)
273         /* Due to a Hardware Anomaly we need to limit the size of usable
274          * instruction memory to max 60MB, 56 if HUNT_FOR_ZERO is on
275          * 05000263 - Hardware loop corrupted when taking an ICPLB exception
276          */
277 #   if (defined(CONFIG_DEBUG_HUNT_FOR_ZERO))
278         if (memory_end >= 56 * 1024 * 1024)
279                 memory_end = 56 * 1024 * 1024;
280 #   else
281         if (memory_end >= 60 * 1024 * 1024)
282                 memory_end = 60 * 1024 * 1024;
283 #   endif                               /* CONFIG_DEBUG_HUNT_FOR_ZERO */
284 #  endif                                /* ANOMALY_05000263 */
285 # endif                         /* CONFIG_ROMFS_FS */
286
287         memory_end -= mtd_size;
288
289         if (mtd_size == 0) {
290                 console_init();
291                 panic("Don't boot kernel without rootfs attached.\n");
292         }
293
294         /* Relocate MTD image to the top of memory after the uncached memory area */
295         dma_memcpy((char *)memory_end, __bss_stop, mtd_size);
296
297         memory_mtd_start = memory_end;
298         _ebss = memory_mtd_start;       /* define _ebss for compatible */
299 #endif                          /* CONFIG_MTD_UCLINUX */
300
301 #if (defined(CONFIG_BFIN_ICACHE) && ANOMALY_05000263)
302         /* Due to a Hardware Anomaly we need to limit the size of usable
303          * instruction memory to max 60MB, 56 if HUNT_FOR_ZERO is on
304          * 05000263 - Hardware loop corrupted when taking an ICPLB exception
305          */
306 #if (defined(CONFIG_DEBUG_HUNT_FOR_ZERO))
307         if (memory_end >= 56 * 1024 * 1024)
308                 memory_end = 56 * 1024 * 1024;
309 #else
310         if (memory_end >= 60 * 1024 * 1024)
311                 memory_end = 60 * 1024 * 1024;
312 #endif                          /* CONFIG_DEBUG_HUNT_FOR_ZERO */
313         printk(KERN_NOTICE "Warning: limiting memory to %liMB due to hardware anomaly 05000263\n", memory_end >> 20);
314 #endif                          /* ANOMALY_05000263 */
315
316 #ifdef CONFIG_MPU
317         page_mask_nelts = ((_ramend >> PAGE_SHIFT) + 31) / 32;
318         page_mask_order = get_order(3 * page_mask_nelts * sizeof(long));
319 #endif
320
321 #if !defined(CONFIG_MTD_UCLINUX)
322         memory_end -= SIZE_4K; /*In case there is no valid CPLB behind memory_end make sure we don't get to close*/
323 #endif
324         init_mm.start_code = (unsigned long)_stext;
325         init_mm.end_code = (unsigned long)_etext;
326         init_mm.end_data = (unsigned long)_edata;
327         init_mm.brk = (unsigned long)0;
328
329         _bfin_swrst = bfin_read_SWRST();
330
331         if (_bfin_swrst & RESET_DOUBLE)
332                 printk(KERN_INFO "Recovering from Double Fault event\n");
333         else if (_bfin_swrst & RESET_WDOG)
334                 printk(KERN_INFO "Recovering from Watchdog event\n");
335         else if (_bfin_swrst & RESET_SOFTWARE)
336                 printk(KERN_NOTICE "Reset caused by Software reset\n");
337
338         printk(KERN_INFO "Blackfin support (C) 2004-2007 Analog Devices, Inc.\n");
339         if (bfin_compiled_revid() == 0xffff)
340                 printk(KERN_INFO "Compiled for ADSP-%s Rev any\n", CPU);
341         else if (bfin_compiled_revid() == -1)
342                 printk(KERN_INFO "Compiled for ADSP-%s Rev none\n", CPU);
343         else
344                 printk(KERN_INFO "Compiled for ADSP-%s Rev 0.%d\n", CPU, bfin_compiled_revid());
345         if (bfin_revid() != bfin_compiled_revid()) {
346                 if (bfin_compiled_revid() == -1)
347                         printk(KERN_ERR "Warning: Compiled for Rev none, but running on Rev %d\n",
348                                bfin_revid());
349                 else if (bfin_compiled_revid() != 0xffff)
350                         printk(KERN_ERR "Warning: Compiled for Rev %d, but running on Rev %d\n",
351                                bfin_compiled_revid(), bfin_revid());
352         }
353         if (bfin_revid() < SUPPORTED_REVID)
354                 printk(KERN_ERR "Warning: Unsupported Chip Revision ADSP-%s Rev 0.%d detected\n",
355                        CPU, bfin_revid());
356         printk(KERN_INFO "Blackfin Linux support by http://blackfin.uclinux.org/\n");
357
358         printk(KERN_INFO "Processor Speed: %lu MHz core clock and %lu MHz System Clock\n",
359                cclk / 1000000,  sclk / 1000000);
360
361         if (ANOMALY_05000273 && (cclk >> 1) <= sclk)
362                 printk("\n\n\nANOMALY_05000273: CCLK must be >= 2*SCLK !!!\n\n\n");
363
364         printk(KERN_INFO "Board Memory: %ldMB\n", physical_mem_end >> 20);
365         printk(KERN_INFO "Kernel Managed Memory: %ldMB\n", _ramend >> 20);
366
367         printk(KERN_INFO "Memory map:\n"
368                KERN_INFO "  text      = 0x%p-0x%p\n"
369                KERN_INFO "  rodata    = 0x%p-0x%p\n"
370                KERN_INFO "  data      = 0x%p-0x%p\n"
371                KERN_INFO "    stack   = 0x%p-0x%p\n"
372                KERN_INFO "  init      = 0x%p-0x%p\n"
373                KERN_INFO "  bss       = 0x%p-0x%p\n"
374                KERN_INFO "  available = 0x%p-0x%p\n"
375 #ifdef CONFIG_MTD_UCLINUX
376                KERN_INFO "  rootfs    = 0x%p-0x%p\n"
377 #endif
378 #if DMA_UNCACHED_REGION > 0
379                KERN_INFO "  DMA Zone  = 0x%p-0x%p\n"
380 #endif
381                , _stext, _etext,
382                __start_rodata, __end_rodata,
383                _sdata, _edata,
384                (void *)&init_thread_union, (void *)((int)(&init_thread_union) + 0x2000),
385                __init_begin, __init_end,
386                __bss_start, __bss_stop,
387                (void *)_ramstart, (void *)memory_end
388 #ifdef CONFIG_MTD_UCLINUX
389                , (void *)memory_mtd_start, (void *)(memory_mtd_start + mtd_size)
390 #endif
391 #if DMA_UNCACHED_REGION > 0
392                , (void *)(_ramend - DMA_UNCACHED_REGION), (void *)(_ramend)
393 #endif
394                );
395
396         /*
397          * give all the memory to the bootmap allocator,  tell it to put the
398          * boot mem_map at the start of memory
399          */
400         bootmap_size = init_bootmem_node(NODE_DATA(0), memory_start >> PAGE_SHIFT,      /* map goes here */
401                                          PAGE_OFFSET >> PAGE_SHIFT,
402                                          memory_end >> PAGE_SHIFT);
403         /*
404          * free the usable memory,  we have to make sure we do not free
405          * the bootmem bitmap so we then reserve it after freeing it :-)
406          */
407         free_bootmem(memory_start, memory_end - memory_start);
408
409         reserve_bootmem(memory_start, bootmap_size, BOOTMEM_DEFAULT);
410         /*
411          * get kmalloc into gear
412          */
413         paging_init();
414
415         /* check the size of the l1 area */
416         l1_length = _etext_l1 - _stext_l1;
417         if (l1_length > L1_CODE_LENGTH)
418                 panic("L1 code memory overflow\n");
419
420         l1_length = _ebss_l1 - _sdata_l1;
421         if (l1_length > L1_DATA_A_LENGTH)
422                 panic("L1 data memory overflow\n");
423
424         /* Copy atomic sequences to their fixed location, and sanity check that
425            these locations are the ones that we advertise to userspace.  */
426         memcpy((void *)FIXED_CODE_START, &fixed_code_start,
427                FIXED_CODE_END - FIXED_CODE_START);
428         BUG_ON((char *)&sigreturn_stub - (char *)&fixed_code_start
429                != SIGRETURN_STUB - FIXED_CODE_START);
430         BUG_ON((char *)&atomic_xchg32 - (char *)&fixed_code_start
431                != ATOMIC_XCHG32 - FIXED_CODE_START);
432         BUG_ON((char *)&atomic_cas32 - (char *)&fixed_code_start
433                != ATOMIC_CAS32 - FIXED_CODE_START);
434         BUG_ON((char *)&atomic_add32 - (char *)&fixed_code_start
435                != ATOMIC_ADD32 - FIXED_CODE_START);
436         BUG_ON((char *)&atomic_sub32 - (char *)&fixed_code_start
437                != ATOMIC_SUB32 - FIXED_CODE_START);
438         BUG_ON((char *)&atomic_ior32 - (char *)&fixed_code_start
439                != ATOMIC_IOR32 - FIXED_CODE_START);
440         BUG_ON((char *)&atomic_and32 - (char *)&fixed_code_start
441                != ATOMIC_AND32 - FIXED_CODE_START);
442         BUG_ON((char *)&atomic_xor32 - (char *)&fixed_code_start
443                != ATOMIC_XOR32 - FIXED_CODE_START);
444         BUG_ON((char *)&safe_user_instruction - (char *)&fixed_code_start
445                 != SAFE_USER_INSTRUCTION - FIXED_CODE_START);
446
447         init_exception_vectors();
448         bf53x_cache_init();
449 }
450
451 static int __init topology_init(void)
452 {
453 #if defined (CONFIG_BF561)
454         static struct cpu cpu[2];
455         register_cpu(&cpu[0], 0);
456         register_cpu(&cpu[1], 1);
457         return 0;
458 #else
459         static struct cpu cpu[1];
460         return register_cpu(cpu, 0);
461 #endif
462 }
463
464 subsys_initcall(topology_init);
465
466 static u_long get_vco(void)
467 {
468         u_long msel;
469         u_long vco;
470
471         msel = (bfin_read_PLL_CTL() >> 9) & 0x3F;
472         if (0 == msel)
473                 msel = 64;
474
475         vco = CONFIG_CLKIN_HZ;
476         vco >>= (1 & bfin_read_PLL_CTL());      /* DF bit */
477         vco = msel * vco;
478         return vco;
479 }
480
481 /* Get the Core clock */
482 u_long get_cclk(void)
483 {
484         u_long csel, ssel;
485         if (bfin_read_PLL_STAT() & 0x1)
486                 return CONFIG_CLKIN_HZ;
487
488         ssel = bfin_read_PLL_DIV();
489         csel = ((ssel >> 4) & 0x03);
490         ssel &= 0xf;
491         if (ssel && ssel < (1 << csel)) /* SCLK > CCLK */
492                 return get_vco() / ssel;
493         return get_vco() >> csel;
494 }
495 EXPORT_SYMBOL(get_cclk);
496
497 /* Get the System clock */
498 u_long get_sclk(void)
499 {
500         u_long ssel;
501
502         if (bfin_read_PLL_STAT() & 0x1)
503                 return CONFIG_CLKIN_HZ;
504
505         ssel = (bfin_read_PLL_DIV() & 0xf);
506         if (0 == ssel) {
507                 printk(KERN_WARNING "Invalid System Clock\n");
508                 ssel = 1;
509         }
510
511         return get_vco() / ssel;
512 }
513 EXPORT_SYMBOL(get_sclk);
514
515 unsigned long sclk_to_usecs(unsigned long sclk)
516 {
517         u64 tmp = USEC_PER_SEC * (u64)sclk;
518         do_div(tmp, get_sclk());
519         return tmp;
520 }
521 EXPORT_SYMBOL(sclk_to_usecs);
522
523 unsigned long usecs_to_sclk(unsigned long usecs)
524 {
525         u64 tmp = get_sclk() * (u64)usecs;
526         do_div(tmp, USEC_PER_SEC);
527         return tmp;
528 }
529 EXPORT_SYMBOL(usecs_to_sclk);
530
531 /*
532  *      Get CPU information for use by the procfs.
533  */
534 static int show_cpuinfo(struct seq_file *m, void *v)
535 {
536         char *cpu, *mmu, *fpu, *vendor, *cache;
537         uint32_t revid;
538
539         u_long cclk = 0, sclk = 0;
540         u_int dcache_size = 0, dsup_banks = 0;
541
542         cpu = CPU;
543         mmu = "none";
544         fpu = "none";
545         revid = bfin_revid();
546
547         cclk = get_cclk();
548         sclk = get_sclk();
549
550         switch (bfin_read_CHIPID() & CHIPID_MANUFACTURE) {
551         case 0xca:
552                 vendor = "Analog Devices";
553                 break;
554         default:
555                 vendor = "unknown";
556                 break;
557         }
558
559         seq_printf(m, "processor\t: %d\n"
560                 "vendor_id\t: %s\n"
561                 "cpu family\t: 0x%x\n"
562                 "model name\t: ADSP-%s %lu(MHz CCLK) %lu(MHz SCLK)\n"
563                 "stepping\t: %d\n",
564                 0,
565                 vendor,
566                 (bfin_read_CHIPID() & CHIPID_FAMILY),
567                 cpu, cclk/1000000, sclk/1000000,
568                 revid);
569
570         seq_printf(m, "cpu MHz\t\t: %lu.%03lu/%lu.%03lu\n",
571                 cclk/1000000, cclk%1000000,
572                 sclk/1000000, sclk%1000000);
573         seq_printf(m, "bogomips\t: %lu.%02lu\n"
574                 "Calibration\t: %lu loops\n",
575                 (loops_per_jiffy * HZ) / 500000,
576                 ((loops_per_jiffy * HZ) / 5000) % 100,
577                 (loops_per_jiffy * HZ));
578
579         /* Check Cache configutation */
580         switch (bfin_read_DMEM_CONTROL() & (1 << DMC0_P | 1 << DMC1_P)) {
581         case ACACHE_BSRAM:
582                 cache = "dbank-A/B\t: cache/sram";
583                 dcache_size = 16;
584                 dsup_banks = 1;
585                 break;
586         case ACACHE_BCACHE:
587                 cache = "dbank-A/B\t: cache/cache";
588                 dcache_size = 32;
589                 dsup_banks = 2;
590                 break;
591         case ASRAM_BSRAM:
592                 cache = "dbank-A/B\t: sram/sram";
593                 dcache_size = 0;
594                 dsup_banks = 0;
595                 break;
596         default:
597                 cache = "unknown";
598                 dcache_size = 0;
599                 dsup_banks = 0;
600                 break;
601         }
602
603         /* Is it turned on? */
604         if (!((bfin_read_DMEM_CONTROL()) & (ENDCPLB | DMC_ENABLE)))
605                 dcache_size = 0;
606
607         seq_printf(m, "cache size\t: %d KB(L1 icache) "
608                 "%d KB(L1 dcache-%s) %d KB(L2 cache)\n",
609                 BFIN_ICACHESIZE / 1024, dcache_size,
610 #if defined CONFIG_BFIN_WB
611                 "wb"
612 #elif defined CONFIG_BFIN_WT
613                 "wt"
614 #endif
615                 "", 0);
616
617         seq_printf(m, "%s\n", cache);
618
619         seq_printf(m, "icache setup\t: %d Sub-banks/%d Ways, %d Lines/Way\n",
620                    BFIN_ISUBBANKS, BFIN_IWAYS, BFIN_ILINES);
621         seq_printf(m,
622                    "dcache setup\t: %d Super-banks/%d Sub-banks/%d Ways, %d Lines/Way\n",
623                    dsup_banks, BFIN_DSUBBANKS, BFIN_DWAYS,
624                    BFIN_DLINES);
625 #ifdef CONFIG_BFIN_ICACHE_LOCK
626         switch (read_iloc()) {
627         case WAY0_L:
628                 seq_printf(m, "Way0 Locked-Down\n");
629                 break;
630         case WAY1_L:
631                 seq_printf(m, "Way1 Locked-Down\n");
632                 break;
633         case WAY01_L:
634                 seq_printf(m, "Way0,Way1 Locked-Down\n");
635                 break;
636         case WAY2_L:
637                 seq_printf(m, "Way2 Locked-Down\n");
638                 break;
639         case WAY02_L:
640                 seq_printf(m, "Way0,Way2 Locked-Down\n");
641                 break;
642         case WAY12_L:
643                 seq_printf(m, "Way1,Way2 Locked-Down\n");
644                 break;
645         case WAY012_L:
646                 seq_printf(m, "Way0,Way1 & Way2 Locked-Down\n");
647                 break;
648         case WAY3_L:
649                 seq_printf(m, "Way3 Locked-Down\n");
650                 break;
651         case WAY03_L:
652                 seq_printf(m, "Way0,Way3 Locked-Down\n");
653                 break;
654         case WAY13_L:
655                 seq_printf(m, "Way1,Way3 Locked-Down\n");
656                 break;
657         case WAY013_L:
658                 seq_printf(m, "Way 0,Way1,Way3 Locked-Down\n");
659                 break;
660         case WAY32_L:
661                 seq_printf(m, "Way3,Way2 Locked-Down\n");
662                 break;
663         case WAY320_L:
664                 seq_printf(m, "Way3,Way2,Way0 Locked-Down\n");
665                 break;
666         case WAY321_L:
667                 seq_printf(m, "Way3,Way2,Way1 Locked-Down\n");
668                 break;
669         case WAYALL_L:
670                 seq_printf(m, "All Ways are locked\n");
671                 break;
672         default:
673                 seq_printf(m, "No Ways are locked\n");
674         }
675 #endif
676
677         seq_printf(m, "board name\t: %s\n", bfin_board_name);
678         seq_printf(m, "board memory\t: %ld kB (0x%p -> 0x%p)\n",
679                  physical_mem_end >> 10, (void *)0, (void *)physical_mem_end);
680         seq_printf(m, "kernel memory\t: %d kB (0x%p -> 0x%p)\n",
681                 ((int)memory_end - (int)_stext) >> 10,
682                 _stext,
683                 (void *)memory_end);
684
685         return 0;
686 }
687
688 static void *c_start(struct seq_file *m, loff_t *pos)
689 {
690         return *pos < NR_CPUS ? ((void *)0x12345678) : NULL;
691 }
692
693 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
694 {
695         ++*pos;
696         return c_start(m, pos);
697 }
698
699 static void c_stop(struct seq_file *m, void *v)
700 {
701 }
702
703 const struct seq_operations cpuinfo_op = {
704         .start = c_start,
705         .next = c_next,
706         .stop = c_stop,
707         .show = show_cpuinfo,
708 };
709
710 void __init cmdline_init(const char *r0)
711 {
712         if (r0)
713                 strncpy(command_line, r0, COMMAND_LINE_SIZE);
714 }