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