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