Blackfin arch: Javier Herrer writes: fix building when icache and dcache is disabled
[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/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)__bss_stop;
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, __bss_stop, 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         printk(KERN_INFO "Blackfin support (C) 2004-2007 Analog Devices, Inc.\n");
320         if (bfin_compiled_revid() == 0xffff)
321                 printk(KERN_INFO "Compiled for ADSP-%s Rev any\n", CPU);
322         else if (bfin_compiled_revid() == -1)
323                 printk(KERN_INFO "Compiled for ADSP-%s Rev none\n", CPU);
324         else
325                 printk(KERN_INFO "Compiled for ADSP-%s Rev 0.%d\n", CPU, bfin_compiled_revid());
326         if (bfin_revid() != bfin_compiled_revid()) {
327                 if (bfin_compiled_revid() == -1)
328                         printk(KERN_ERR "Warning: Compiled for Rev none, but running on Rev %d\n",
329                                bfin_revid());
330                 else if (bfin_compiled_revid() != 0xffff)
331                         printk(KERN_ERR "Warning: Compiled for Rev %d, but running on Rev %d\n",
332                                bfin_compiled_revid(), bfin_revid());
333         }
334         if (bfin_revid() < SUPPORTED_REVID)
335                 printk(KERN_ERR "Warning: Unsupported Chip Revision ADSP-%s Rev 0.%d detected\n",
336                        CPU, bfin_revid());
337         printk(KERN_INFO "Blackfin Linux support by http://blackfin.uclinux.org/\n");
338
339         printk(KERN_INFO "Processor Speed: %lu MHz core clock and %lu MHz System Clock\n",
340                cclk / 1000000,  sclk / 1000000);
341
342         if (ANOMALY_05000273 && (cclk >> 1) <= sclk)
343                 printk("\n\n\nANOMALY_05000273: CCLK must be >= 2*SCLK !!!\n\n\n");
344
345         printk(KERN_INFO "Board Memory: %ldMB\n", physical_mem_end >> 20);
346         printk(KERN_INFO "Kernel Managed Memory: %ldMB\n", _ramend >> 20);
347
348         printk(KERN_INFO "Memory map:\n"
349                KERN_INFO "  text      = 0x%p-0x%p\n"
350                KERN_INFO "  rodata    = 0x%p-0x%p\n"
351                KERN_INFO "  data      = 0x%p-0x%p\n"
352                KERN_INFO "    stack   = 0x%p-0x%p\n"
353                KERN_INFO "  init      = 0x%p-0x%p\n"
354                KERN_INFO "  bss       = 0x%p-0x%p\n"
355                KERN_INFO "  available = 0x%p-0x%p\n"
356 #ifdef CONFIG_MTD_UCLINUX
357                KERN_INFO "  rootfs    = 0x%p-0x%p\n"
358 #endif
359 #if DMA_UNCACHED_REGION > 0
360                KERN_INFO "  DMA Zone  = 0x%p-0x%p\n"
361 #endif
362                , _stext, _etext,
363                __start_rodata, __end_rodata,
364                _sdata, _edata,
365                (void *)&init_thread_union, (void *)((int)(&init_thread_union) + 0x2000),
366                __init_begin, __init_end,
367                __bss_start, __bss_stop,
368                (void *)_ramstart, (void *)memory_end
369 #ifdef CONFIG_MTD_UCLINUX
370                , (void *)memory_mtd_start, (void *)(memory_mtd_start + mtd_size)
371 #endif
372 #if DMA_UNCACHED_REGION > 0
373                , (void *)(_ramend - DMA_UNCACHED_REGION), (void *)(_ramend)
374 #endif
375                );
376
377         /*
378          * give all the memory to the bootmap allocator,  tell it to put the
379          * boot mem_map at the start of memory
380          */
381         bootmap_size = init_bootmem_node(NODE_DATA(0), memory_start >> PAGE_SHIFT,      /* map goes here */
382                                          PAGE_OFFSET >> PAGE_SHIFT,
383                                          memory_end >> PAGE_SHIFT);
384         /*
385          * free the usable memory,  we have to make sure we do not free
386          * the bootmem bitmap so we then reserve it after freeing it :-)
387          */
388         free_bootmem(memory_start, memory_end - memory_start);
389
390         reserve_bootmem(memory_start, bootmap_size);
391         /*
392          * get kmalloc into gear
393          */
394         paging_init();
395
396         /* check the size of the l1 area */
397         l1_length = _etext_l1 - _stext_l1;
398         if (l1_length > L1_CODE_LENGTH)
399                 panic("L1 code memory overflow\n");
400
401         l1_length = _ebss_l1 - _sdata_l1;
402         if (l1_length > L1_DATA_A_LENGTH)
403                 panic("L1 data memory overflow\n");
404
405         _bfin_swrst = bfin_read_SWRST();
406
407         /* Copy atomic sequences to their fixed location, and sanity check that
408            these locations are the ones that we advertise to userspace.  */
409         memcpy((void *)FIXED_CODE_START, &fixed_code_start,
410                FIXED_CODE_END - FIXED_CODE_START);
411         BUG_ON((char *)&sigreturn_stub - (char *)&fixed_code_start
412                != SIGRETURN_STUB - FIXED_CODE_START);
413         BUG_ON((char *)&atomic_xchg32 - (char *)&fixed_code_start
414                != ATOMIC_XCHG32 - FIXED_CODE_START);
415         BUG_ON((char *)&atomic_cas32 - (char *)&fixed_code_start
416                != ATOMIC_CAS32 - FIXED_CODE_START);
417         BUG_ON((char *)&atomic_add32 - (char *)&fixed_code_start
418                != ATOMIC_ADD32 - FIXED_CODE_START);
419         BUG_ON((char *)&atomic_sub32 - (char *)&fixed_code_start
420                != ATOMIC_SUB32 - FIXED_CODE_START);
421         BUG_ON((char *)&atomic_ior32 - (char *)&fixed_code_start
422                != ATOMIC_IOR32 - FIXED_CODE_START);
423         BUG_ON((char *)&atomic_and32 - (char *)&fixed_code_start
424                != ATOMIC_AND32 - FIXED_CODE_START);
425         BUG_ON((char *)&atomic_xor32 - (char *)&fixed_code_start
426                != ATOMIC_XOR32 - FIXED_CODE_START);
427
428         init_exception_vectors();
429         bf53x_cache_init();
430 }
431
432 static int __init topology_init(void)
433 {
434 #if defined (CONFIG_BF561)
435         static struct cpu cpu[2];
436         register_cpu(&cpu[0], 0);
437         register_cpu(&cpu[1], 1);
438         return 0;
439 #else
440         static struct cpu cpu[1];
441         return register_cpu(cpu, 0);
442 #endif
443 }
444
445 subsys_initcall(topology_init);
446
447 static u_long get_vco(void)
448 {
449         u_long msel;
450         u_long vco;
451
452         msel = (bfin_read_PLL_CTL() >> 9) & 0x3F;
453         if (0 == msel)
454                 msel = 64;
455
456         vco = CONFIG_CLKIN_HZ;
457         vco >>= (1 & bfin_read_PLL_CTL());      /* DF bit */
458         vco = msel * vco;
459         return vco;
460 }
461
462 /* Get the Core clock */
463 u_long get_cclk(void)
464 {
465         u_long csel, ssel;
466         if (bfin_read_PLL_STAT() & 0x1)
467                 return CONFIG_CLKIN_HZ;
468
469         ssel = bfin_read_PLL_DIV();
470         csel = ((ssel >> 4) & 0x03);
471         ssel &= 0xf;
472         if (ssel && ssel < (1 << csel)) /* SCLK > CCLK */
473                 return get_vco() / ssel;
474         return get_vco() >> csel;
475 }
476 EXPORT_SYMBOL(get_cclk);
477
478 /* Get the System clock */
479 u_long get_sclk(void)
480 {
481         u_long ssel;
482
483         if (bfin_read_PLL_STAT() & 0x1)
484                 return CONFIG_CLKIN_HZ;
485
486         ssel = (bfin_read_PLL_DIV() & 0xf);
487         if (0 == ssel) {
488                 printk(KERN_WARNING "Invalid System Clock\n");
489                 ssel = 1;
490         }
491
492         return get_vco() / ssel;
493 }
494 EXPORT_SYMBOL(get_sclk);
495
496 unsigned long sclk_to_usecs(unsigned long sclk)
497 {
498         return (USEC_PER_SEC * (u64)sclk) / get_sclk();
499 }
500 EXPORT_SYMBOL(sclk_to_usecs);
501
502 unsigned long usecs_to_sclk(unsigned long usecs)
503 {
504         return (get_sclk() * (u64)usecs) / USEC_PER_SEC;
505 }
506 EXPORT_SYMBOL(usecs_to_sclk);
507
508 /*
509  *      Get CPU information for use by the procfs.
510  */
511 static int show_cpuinfo(struct seq_file *m, void *v)
512 {
513         char *cpu, *mmu, *fpu, *vendor, *cache;
514         uint32_t revid;
515
516         u_long cclk = 0, sclk = 0;
517         u_int dcache_size = 0, dsup_banks = 0;
518
519         cpu = CPU;
520         mmu = "none";
521         fpu = "none";
522         revid = bfin_revid();
523
524         cclk = get_cclk();
525         sclk = get_sclk();
526
527         switch (bfin_read_CHIPID() & CHIPID_MANUFACTURE) {
528         case 0xca:
529                 vendor = "Analog Devices";
530                 break;
531         default:
532                 vendor = "unknown";
533                 break;
534         }
535
536         seq_printf(m, "processor\t: %d\n"
537                 "vendor_id\t: %s\n"
538                 "cpu family\t: 0x%x\n"
539                 "model name\t: ADSP-%s %lu(MHz CCLK) %lu(MHz SCLK)\n"
540                 "stepping\t: %d\n",
541                 0,
542                 vendor,
543                 (bfin_read_CHIPID() & CHIPID_FAMILY),
544                 cpu, cclk/1000000, sclk/1000000,
545                 revid);
546
547         seq_printf(m, "cpu MHz\t\t: %lu.%03lu/%lu.%03lu\n",
548                 cclk/1000000, cclk%1000000,
549                 sclk/1000000, sclk%1000000);
550         seq_printf(m, "bogomips\t: %lu.%02lu\n"
551                 "Calibration\t: %lu loops\n",
552                 (loops_per_jiffy * HZ) / 500000,
553                 ((loops_per_jiffy * HZ) / 5000) % 100,
554                 (loops_per_jiffy * HZ));
555
556         /* Check Cache configutation */
557         switch (bfin_read_DMEM_CONTROL() & (1 << DMC0_P | 1 << DMC1_P)) {
558         case ACACHE_BSRAM:
559                 cache = "dbank-A/B\t: cache/sram";
560                 dcache_size = 16;
561                 dsup_banks = 1;
562                 break;
563         case ACACHE_BCACHE:
564                 cache = "dbank-A/B\t: cache/cache";
565                 dcache_size = 32;
566                 dsup_banks = 2;
567                 break;
568         case ASRAM_BSRAM:
569                 cache = "dbank-A/B\t: sram/sram";
570                 dcache_size = 0;
571                 dsup_banks = 0;
572                 break;
573         default:
574                 cache = "unknown";
575                 dcache_size = 0;
576                 dsup_banks = 0;
577                 break;
578         }
579
580         /* Is it turned on? */
581         if (!((bfin_read_DMEM_CONTROL()) & (ENDCPLB | DMC_ENABLE)))
582                 dcache_size = 0;
583
584         seq_printf(m, "cache size\t: %d KB(L1 icache) "
585                 "%d KB(L1 dcache-%s) %d KB(L2 cache)\n",
586                 BFIN_ICACHESIZE / 1024, dcache_size,
587 #if defined CONFIG_BFIN_WB
588                 "wb"
589 #elif defined CONFIG_BFIN_WT
590                 "wt"
591 #endif
592                 "", 0);
593
594         seq_printf(m, "%s\n", cache);
595
596         seq_printf(m, "icache setup\t: %d Sub-banks/%d Ways, %d Lines/Way\n",
597                    BFIN_ISUBBANKS, BFIN_IWAYS, BFIN_ILINES);
598         seq_printf(m,
599                    "dcache setup\t: %d Super-banks/%d Sub-banks/%d Ways, %d Lines/Way\n",
600                    dsup_banks, BFIN_DSUBBANKS, BFIN_DWAYS,
601                    BFIN_DLINES);
602 #ifdef CONFIG_BFIN_ICACHE_LOCK
603         switch (read_iloc()) {
604         case WAY0_L:
605                 seq_printf(m, "Way0 Locked-Down\n");
606                 break;
607         case WAY1_L:
608                 seq_printf(m, "Way1 Locked-Down\n");
609                 break;
610         case WAY01_L:
611                 seq_printf(m, "Way0,Way1 Locked-Down\n");
612                 break;
613         case WAY2_L:
614                 seq_printf(m, "Way2 Locked-Down\n");
615                 break;
616         case WAY02_L:
617                 seq_printf(m, "Way0,Way2 Locked-Down\n");
618                 break;
619         case WAY12_L:
620                 seq_printf(m, "Way1,Way2 Locked-Down\n");
621                 break;
622         case WAY012_L:
623                 seq_printf(m, "Way0,Way1 & Way2 Locked-Down\n");
624                 break;
625         case WAY3_L:
626                 seq_printf(m, "Way3 Locked-Down\n");
627                 break;
628         case WAY03_L:
629                 seq_printf(m, "Way0,Way3 Locked-Down\n");
630                 break;
631         case WAY13_L:
632                 seq_printf(m, "Way1,Way3 Locked-Down\n");
633                 break;
634         case WAY013_L:
635                 seq_printf(m, "Way 0,Way1,Way3 Locked-Down\n");
636                 break;
637         case WAY32_L:
638                 seq_printf(m, "Way3,Way2 Locked-Down\n");
639                 break;
640         case WAY320_L:
641                 seq_printf(m, "Way3,Way2,Way0 Locked-Down\n");
642                 break;
643         case WAY321_L:
644                 seq_printf(m, "Way3,Way2,Way1 Locked-Down\n");
645                 break;
646         case WAYALL_L:
647                 seq_printf(m, "All Ways are locked\n");
648                 break;
649         default:
650                 seq_printf(m, "No Ways are locked\n");
651         }
652 #endif
653
654         seq_printf(m, "board name\t: %s\n", bfin_board_name);
655         seq_printf(m, "board memory\t: %ld kB (0x%p -> 0x%p)\n",
656                  physical_mem_end >> 10, (void *)0, (void *)physical_mem_end);
657         seq_printf(m, "kernel memory\t: %d kB (0x%p -> 0x%p)\n",
658                 ((int)memory_end - (int)_stext) >> 10,
659                 _stext,
660                 (void *)memory_end);
661
662         return 0;
663 }
664
665 static void *c_start(struct seq_file *m, loff_t *pos)
666 {
667         return *pos < NR_CPUS ? ((void *)0x12345678) : NULL;
668 }
669
670 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
671 {
672         ++*pos;
673         return c_start(m, pos);
674 }
675
676 static void c_stop(struct seq_file *m, void *v)
677 {
678 }
679
680 struct seq_operations cpuinfo_op = {
681         .start = c_start,
682         .next = c_next,
683         .stop = c_stop,
684         .show = show_cpuinfo,
685 };
686
687 void __init cmdline_init(const char *r0)
688 {
689         if (r0)
690                 strncpy(command_line, r0, COMMAND_LINE_SIZE);
691 }