common/board_f.c

   1 /*
   2  * Copyright (c) 2011 The Chromium OS Authors.
   3  * (C) Copyright 2002-2006
   4  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   5  *
   6  * (C) Copyright 2002
   7  * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
   8  * Marius Groeger <mgroeger@sysgo.de>
   9  *
  10  * See file CREDITS for list of people who contributed to this
  11  * project.
  12  *
  13  * This program is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU General Public License as
  15  * published by the Free Software Foundation; either version 2 of
  16  * the License, or (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  26  * MA 02111-1307 USA
  27  */
  28
  29 #include <common.h>
  30 #include <linux/compiler.h>
  31 #include <version.h>
  32 #include <environment.h>
  33 #include <fdtdec.h>
  34 #include <fs.h>
  35 #if defined(CONFIG_CMD_IDE)
  36 #include <ide.h>
  37 #endif
  38 #include <i2c.h>
  39 #include <initcall.h>
  40 #include <logbuff.h>
  41
  42 /* TODO: Can we move these into arch/ headers? */
  43 #ifdef CONFIG_8xx
  44 #include <mpc8xx.h>
  45 #endif
  46 #ifdef CONFIG_5xx
  47 #include <mpc5xx.h>
  48 #endif
  49 #ifdef CONFIG_MPC5xxx
  50 #include <mpc5xxx.h>
  51 #endif
  52
  53 #include <os.h>
  54 #include <post.h>
  55 #include <spi.h>
  56 #include <watchdog.h>
  57 #include <asm/errno.h>
  58 #include <asm/io.h>
  59 #ifdef CONFIG_MP
  60 #include <asm/mp.h>
  61 #endif
  62 #include <asm/sections.h>
  63 #ifdef CONFIG_X86
  64 #include <asm/init_helpers.h>
  65 #include <asm/relocate.h>
  66 #endif
  67 #ifdef CONFIG_SANDBOX
  68 #include <asm/state.h>
  69 #endif
  70 #include <linux/compiler.h>
  71
  72 /*
  73  * Pointer to initial global data area
  74  *
  75  * Here we initialize it if needed.
  76  */
  77 #ifdef XTRN_DECLARE_GLOBAL_DATA_PTR
  78 #undef  XTRN_DECLARE_GLOBAL_DATA_PTR
  79 #define XTRN_DECLARE_GLOBAL_DATA_PTR    /* empty = allocate here */
  80 DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CONFIG_SYS_INIT_GD_ADDR);
  81 #else
  82 DECLARE_GLOBAL_DATA_PTR;
  83 #endif
  84
  85 /*
  86  * sjg: IMO this code should be
  87  * refactored to a single function, something like:
  88  *
  89  * void led_set_state(enum led_colour_t colour, int on);
  90  */
  91 /************************************************************************
  92  * Coloured LED functionality
  93  ************************************************************************
  94  * May be supplied by boards if desired
  95  */
  96 inline void __coloured_LED_init(void) {}
  97 void coloured_LED_init(void)
  98         __attribute__((weak, alias("__coloured_LED_init")));
  99 inline void __red_led_on(void) {}
 100 void red_led_on(void) __attribute__((weak, alias("__red_led_on")));
 101 inline void __red_led_off(void) {}
 102 void red_led_off(void) __attribute__((weak, alias("__red_led_off")));
 103 inline void __green_led_on(void) {}
 104 void green_led_on(void) __attribute__((weak, alias("__green_led_on")));
 105 inline void __green_led_off(void) {}
 106 void green_led_off(void) __attribute__((weak, alias("__green_led_off")));
 107 inline void __yellow_led_on(void) {}
 108 void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on")));
 109 inline void __yellow_led_off(void) {}
 110 void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off")));
 111 inline void __blue_led_on(void) {}
 112 void blue_led_on(void) __attribute__((weak, alias("__blue_led_on")));
 113 inline void __blue_led_off(void) {}
 114 void blue_led_off(void) __attribute__((weak, alias("__blue_led_off")));
 115
 116 /*
 117  * Why is gd allocated a register? Prior to reloc it might be better to
 118  * just pass it around to each function in this file?
 119  *
 120  * After reloc one could argue that it is hardly used and doesn't need
 121  * to be in a register. Or if it is it should perhaps hold pointers to all
 122  * global data for all modules, so that post-reloc we can avoid the massive
 123  * literal pool we get on ARM. Or perhaps just encourage each module to use
 124  * a structure...
 125  */
 126
 127 /*
 128  * Could the CONFIG_SPL_BUILD infection become a flag in gd?
 129  */
 130
 131 #if defined(CONFIG_WATCHDOG)
 132 static int init_func_watchdog_init(void)
 133 {
 134         puts("       Watchdog enabled\n");
 135         WATCHDOG_RESET();
 136
 137         return 0;
 138 }
 139
 140 int init_func_watchdog_reset(void)
 141 {
 142         WATCHDOG_RESET();
 143
 144         return 0;
 145 }
 146 #endif /* CONFIG_WATCHDOG */
 147
 148 void __board_add_ram_info(int use_default)
 149 {
 150         /* please define platform specific board_add_ram_info() */
 151 }
 152
 153 void board_add_ram_info(int)
 154         __attribute__ ((weak, alias("__board_add_ram_info")));
 155
 156 static int init_baud_rate(void)
 157 {
 158         gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
 159         return 0;
 160 }
 161
 162 static int display_text_info(void)
 163 {
 164 #ifndef CONFIG_SANDBOX
 165         ulong bss_start, bss_end;
 166
 167 #ifdef CONFIG_SYS_SYM_OFFSETS
 168         bss_start = _bss_start_ofs + _TEXT_BASE;
 169         bss_end = _bss_end_ofs + _TEXT_BASE;
 170 #else
 171         bss_start = (ulong)&__bss_start;
 172         bss_end = (ulong)&__bss_end;
 173 #endif
 174         debug("U-Boot code: %08X -> %08lX  BSS: -> %08lX\n",
 175               CONFIG_SYS_TEXT_BASE, bss_start, bss_end);
 176 #endif
 177
 178 #ifdef CONFIG_MODEM_SUPPORT
 179         debug("Modem Support enabled\n");
 180 #endif
 181 #ifdef CONFIG_USE_IRQ
 182         debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
 183         debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
 184 #endif
 185
 186         return 0;
 187 }
 188
 189 static int announce_dram_init(void)
 190 {
 191         puts("DRAM:  ");
 192         return 0;
 193 }
 194
 195 #ifdef CONFIG_PPC
 196 static int init_func_ram(void)
 197 {
 198 #ifdef  CONFIG_BOARD_TYPES
 199         int board_type = gd->board_type;
 200 #else
 201         int board_type = 0;     /* use dummy arg */
 202 #endif
 203
 204         gd->ram_size = initdram(board_type);
 205
 206         if (gd->ram_size > 0)
 207                 return 0;
 208
 209         puts("*** failed ***\n");
 210         return 1;
 211 }
 212 #endif
 213
 214 static int show_dram_config(void)
 215 {
 216         ulong size;
 217
 218 #ifdef CONFIG_NR_DRAM_BANKS
 219         int i;
 220
 221         debug("\nRAM Configuration:\n");
 222         for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
 223                 size += gd->bd->bi_dram[i].size;
 224                 debug("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
 225 #ifdef DEBUG
 226                 print_size(gd->bd->bi_dram[i].size, "\n");
 227 #endif
 228         }
 229         debug("\nDRAM:  ");
 230 #else
 231         size = gd->ram_size;
 232 #endif
 233
 234         print_size(size, "");
 235         board_add_ram_info(0);
 236         putc('\n');
 237
 238         return 0;
 239 }
 240
 241 ulong get_effective_memsize(void)
 242 {
 243 #ifndef CONFIG_VERY_BIG_RAM
 244         return gd->ram_size;
 245 #else
 246         /* limit stack to what we can reasonable map */
 247         return ((gd->ram_size > CONFIG_MAX_MEM_MAPPED) ?
 248                 CONFIG_MAX_MEM_MAPPED : gd->ram_size);
 249 #endif
 250 }
 251
 252 void __dram_init_banksize(void)
 253 {
 254 #if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE)
 255         gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
 256         gd->bd->bi_dram[0].size = get_effective_memsize();
 257 #endif
 258 }
 259
 260 void dram_init_banksize(void)
 261         __attribute__((weak, alias("__dram_init_banksize")));
 262
 263 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 264 static int init_func_i2c(void)
 265 {
 266         puts("I2C:   ");
 267         i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
 268         puts("ready\n");
 269         return 0;
 270 }
 271 #endif
 272
 273 #if defined(CONFIG_HARD_SPI)
 274 static int init_func_spi(void)
 275 {
 276         puts("SPI:   ");
 277         spi_init();
 278         puts("ready\n");
 279         return 0;
 280 }
 281 #endif
 282
 283 __maybe_unused
 284 static int zero_global_data(void)
 285 {
 286         memset((void *)gd, '\0', sizeof(gd_t));
 287
 288         return 0;
 289 }
 290
 291 static int setup_mon_len(void)
 292 {
 293 #ifdef CONFIG_SYS_SYM_OFFSETS
 294         gd->mon_len = _bss_end_ofs;
 295 #elif defined(CONFIG_SANDBOX)
 296         gd->mon_len = (ulong)&_end - (ulong)_init;
 297 #else
 298         /* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */
 299         gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE;
 300 #endif
 301         return 0;
 302 }
 303
 304 __weak int arch_cpu_init(void)
 305 {
 306         return 0;
 307 }
 308
 309 #ifdef CONFIG_OF_HOSTFILE
 310
 311 #define CHECK(x)                err = (x); if (err) goto failed;
 312
 313 /* Create an empty device tree blob */
 314 static int make_empty_fdt(void *fdt)
 315 {
 316         int err;
 317
 318         CHECK(fdt_create(fdt, 256));
 319         CHECK(fdt_finish_reservemap(fdt));
 320         CHECK(fdt_begin_node(fdt, ""));
 321         CHECK(fdt_end_node(fdt));
 322         CHECK(fdt_finish(fdt));
 323
 324         return 0;
 325 failed:
 326         printf("Unable to create empty FDT: %s\n", fdt_strerror(err));
 327         return -EACCES;
 328 }
 329
 330 static int read_fdt_from_file(void)
 331 {
 332         struct sandbox_state *state = state_get_current();
 333         void *blob;
 334         int size;
 335         int err;
 336
 337         blob = map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR, 0);
 338         if (!state->fdt_fname) {
 339                 err = make_empty_fdt(blob);
 340                 if (!err)
 341                         goto done;
 342                 return err;
 343         }
 344         err = fs_set_blk_dev("host", NULL, FS_TYPE_SANDBOX);
 345         if (err)
 346                 return err;
 347         size = fs_read(state->fdt_fname, CONFIG_SYS_FDT_LOAD_ADDR, 0, 0);
 348         if (size < 0)
 349                 return -EIO;
 350
 351 done:
 352         gd->fdt_blob = blob;
 353
 354         return 0;
 355 }
 356 #endif
 357
 358 #ifdef CONFIG_SANDBOX
 359 static int setup_ram_buf(void)
 360 {
 361         gd->arch.ram_buf = os_malloc(CONFIG_SYS_SDRAM_SIZE);
 362         assert(gd->arch.ram_buf);
 363         gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
 364
 365         return 0;
 366 }
 367 #endif
 368
 369 static int setup_fdt(void)
 370 {
 371 #ifdef CONFIG_OF_EMBED
 372         /* Get a pointer to the FDT */
 373         gd->fdt_blob = _binary_dt_dtb_start;
 374 #elif defined CONFIG_OF_SEPARATE
 375         /* FDT is at end of image */
 376 # ifdef CONFIG_SYS_SYM_OFFSETS
 377         gd->fdt_blob = (void *)(_end_ofs + CONFIG_SYS_TEXT_BASE);
 378 # else
 379         gd->fdt_blob = (ulong *)&_end;
 380 # endif
 381 #elif defined(CONFIG_OF_HOSTFILE)
 382         if (read_fdt_from_file()) {
 383                 puts("Failed to read control FDT\n");
 384                 return -1;
 385         }
 386 #endif
 387         /* Allow the early environment to override the fdt address */
 388         gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
 389                                                 (uintptr_t)gd->fdt_blob);
 390         return 0;
 391 }
 392
 393 /* Get the top of usable RAM */
 394 __weak ulong board_get_usable_ram_top(ulong total_size)
 395 {
 396         return gd->ram_top;
 397 }
 398
 399 static int setup_dest_addr(void)
 400 {
 401         debug("Monitor len: %08lX\n", gd->mon_len);
 402         /*
 403          * Ram is setup, size stored in gd !!
 404          */
 405         debug("Ram size: %08lX\n", (ulong)gd->ram_size);
 406 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
 407         /*
 408          * Subtract specified amount of memory to hide so that it won't
 409          * get "touched" at all by U-Boot. By fixing up gd->ram_size
 410          * the Linux kernel should now get passed the now "corrected"
 411          * memory size and won't touch it either. This should work
 412          * for arch/ppc and arch/powerpc. Only Linux board ports in
 413          * arch/powerpc with bootwrapper support, that recalculate the
 414          * memory size from the SDRAM controller setup will have to
 415          * get fixed.
 416          */
 417         gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
 418 #endif
 419 #ifdef CONFIG_SYS_SDRAM_BASE
 420         gd->ram_top = CONFIG_SYS_SDRAM_BASE;
 421 #endif
 422         gd->ram_top += get_effective_memsize();
 423         gd->ram_top = board_get_usable_ram_top(gd->mon_len);
 424         gd->dest_addr = gd->ram_top;
 425         debug("Ram top: %08lX\n", (ulong)gd->ram_top);
 426 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
 427         /*
 428          * We need to make sure the location we intend to put secondary core
 429          * boot code is reserved and not used by any part of u-boot
 430          */
 431         if (gd->dest_addr > determine_mp_bootpg(NULL)) {
 432                 gd->dest_addr = determine_mp_bootpg(NULL);
 433                 debug("Reserving MP boot page to %08lx\n", gd->dest_addr);
 434         }
 435 #endif
 436         gd->dest_addr_sp = gd->dest_addr;
 437         return 0;
 438 }
 439
 440 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
 441 static int reserve_logbuffer(void)
 442 {
 443         /* reserve kernel log buffer */
 444         gd->dest_addr -= LOGBUFF_RESERVE;
 445         debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
 446                 gd->dest_addr);
 447         return 0;
 448 }
 449 #endif
 450
 451 #ifdef CONFIG_PRAM
 452 /* reserve protected RAM */
 453 static int reserve_pram(void)
 454 {
 455         ulong reg;
 456
 457         reg = getenv_ulong("pram", 10, CONFIG_PRAM);
 458         gd->dest_addr -= (reg << 10);           /* size is in kB */
 459         debug("Reserving %ldk for protected RAM at %08lx\n", reg,
 460               gd->dest_addr);
 461         return 0;
 462 }
 463 #endif /* CONFIG_PRAM */
 464
 465 /* Round memory pointer down to next 4 kB limit */
 466 static int reserve_round_4k(void)
 467 {
 468         gd->dest_addr &= ~(4096 - 1);
 469         return 0;
 470 }
 471
 472 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \
 473                 defined(CONFIG_ARM)
 474 static int reserve_mmu(void)
 475 {
 476         /* reserve TLB table */
 477         gd->arch.tlb_size = 4096 * 4;
 478         gd->dest_addr -= gd->arch.tlb_size;
 479
 480         /* round down to next 64 kB limit */
 481         gd->dest_addr &= ~(0x10000 - 1);
 482
 483         gd->arch.tlb_addr = gd->dest_addr;
 484         debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr,
 485               gd->arch.tlb_addr + gd->arch.tlb_size);
 486         return 0;
 487 }
 488 #endif
 489
 490 #ifdef CONFIG_LCD
 491 static int reserve_lcd(void)
 492 {
 493 #ifdef CONFIG_FB_ADDR
 494         gd->fb_base = CONFIG_FB_ADDR;
 495 #else
 496         /* reserve memory for LCD display (always full pages) */
 497         gd->dest_addr = lcd_setmem(gd->dest_addr);
 498         gd->fb_base = gd->dest_addr;
 499 #endif /* CONFIG_FB_ADDR */
 500         return 0;
 501 }
 502 #endif /* CONFIG_LCD */
 503
 504 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \
 505                 && !defined(CONFIG_ARM) && !defined(CONFIG_X86)
 506 static int reserve_video(void)
 507 {
 508         /* reserve memory for video display (always full pages) */
 509         gd->dest_addr = video_setmem(gd->dest_addr);
 510         gd->fb_base = gd->dest_addr;
 511
 512         return 0;
 513 }
 514 #endif
 515
 516 static int reserve_uboot(void)
 517 {
 518         /*
 519          * reserve memory for U-Boot code, data & bss
 520          * round down to next 4 kB limit
 521          */
 522         gd->dest_addr -= gd->mon_len;
 523         gd->dest_addr &= ~(4096 - 1);
 524 #ifdef CONFIG_E500
 525         /* round down to next 64 kB limit so that IVPR stays aligned */
 526         gd->dest_addr &= ~(65536 - 1);
 527 #endif
 528
 529         debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10,
 530               gd->dest_addr);
 531         return 0;
 532 }
 533
 534 #ifndef CONFIG_SPL_BUILD
 535 /* reserve memory for malloc() area */
 536 static int reserve_malloc(void)
 537 {
 538         gd->dest_addr_sp = gd->dest_addr - TOTAL_MALLOC_LEN;
 539         debug("Reserving %dk for malloc() at: %08lx\n",
 540                         TOTAL_MALLOC_LEN >> 10, gd->dest_addr_sp);
 541         return 0;
 542 }
 543
 544 /* (permanently) allocate a Board Info struct */
 545 static int reserve_board(void)
 546 {
 547         gd->dest_addr_sp -= sizeof(bd_t);
 548         gd->bd = (bd_t *)map_sysmem(gd->dest_addr_sp, sizeof(bd_t));
 549         memset(gd->bd, '\0', sizeof(bd_t));
 550         debug("Reserving %zu Bytes for Board Info at: %08lx\n",
 551                         sizeof(bd_t), gd->dest_addr_sp);
 552         return 0;
 553 }
 554 #endif
 555
 556 static int setup_machine(void)
 557 {
 558 #ifdef CONFIG_MACH_TYPE
 559         gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
 560 #endif
 561         return 0;
 562 }
 563
 564 static int reserve_global_data(void)
 565 {
 566         gd->dest_addr_sp -= sizeof(gd_t);
 567         gd->new_gd = (gd_t *)map_sysmem(gd->dest_addr_sp, sizeof(gd_t));
 568         debug("Reserving %zu Bytes for Global Data at: %08lx\n",
 569                         sizeof(gd_t), gd->dest_addr_sp);
 570         return 0;
 571 }
 572
 573 static int reserve_fdt(void)
 574 {
 575         /*
 576          * If the device tree is sitting immediate above our image then we
 577          * must relocate it. If it is embedded in the data section, then it
 578          * will be relocated with other data.
 579          */
 580         if (gd->fdt_blob) {
 581                 gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
 582
 583                 gd->dest_addr_sp -= gd->fdt_size;
 584                 gd->new_fdt = map_sysmem(gd->dest_addr_sp, gd->fdt_size);
 585                 debug("Reserving %lu Bytes for FDT at: %08lx\n",
 586                       gd->fdt_size, gd->dest_addr_sp);
 587         }
 588
 589         return 0;
 590 }
 591
 592 static int reserve_stacks(void)
 593 {
 594 #ifdef CONFIG_SPL_BUILD
 595 # ifdef CONFIG_ARM
 596         gd->dest_addr_sp -= 128;        /* leave 32 words for abort-stack */
 597         gd->irq_sp = gd->dest_addr_sp;
 598 # endif
 599 #else
 600 # ifdef CONFIG_PPC
 601         ulong *s;
 602 # endif
 603
 604         /* setup stack pointer for exceptions */
 605         gd->dest_addr_sp -= 16;
 606         gd->dest_addr_sp &= ~0xf;
 607         gd->irq_sp = gd->dest_addr_sp;
 608
 609         /*
 610          * Handle architecture-specific things here
 611          * TODO(sjg@chromium.org): Perhaps create arch_reserve_stack()
 612          * to handle this and put in arch/xxx/lib/stack.c
 613          */
 614 # ifdef CONFIG_ARM
 615 #  ifdef CONFIG_USE_IRQ
 616         gd->dest_addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ);
 617         debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
 618                 CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ, gd->dest_addr_sp);
 619
 620         /* 8-byte alignment for ARM ABI compliance */
 621         gd->dest_addr_sp &= ~0x07;
 622 #  endif
 623         /* leave 3 words for abort-stack, plus 1 for alignment */
 624         gd->dest_addr_sp -= 16;
 625 # elif defined(CONFIG_PPC)
 626         /* Clear initial stack frame */
 627         s = (ulong *) gd->dest_addr_sp;
 628         *s = 0; /* Terminate back chain */
 629         *++s = 0; /* NULL return address */
 630 # endif /* Architecture specific code */
 631
 632         return 0;
 633 #endif
 634 }
 635
 636 static int display_new_sp(void)
 637 {
 638         debug("New Stack Pointer is: %08lx\n", gd->dest_addr_sp);
 639
 640         return 0;
 641 }
 642
 643 #ifdef CONFIG_PPC
 644 static int setup_board_part1(void)
 645 {
 646         bd_t *bd = gd->bd;
 647
 648         /*
 649          * Save local variables to board info struct
 650          */
 651
 652         bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;        /* start of memory */
 653         bd->bi_memsize = gd->ram_size;                  /* size in bytes */
 654
 655 #ifdef CONFIG_SYS_SRAM_BASE
 656         bd->bi_sramstart = CONFIG_SYS_SRAM_BASE;        /* start of SRAM */
 657         bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE;         /* size  of SRAM */
 658 #endif
 659
 660 #if defined(CONFIG_8xx) || defined(CONFIG_8260) || defined(CONFIG_5xx) || \
 661                 defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
 662         bd->bi_immr_base = CONFIG_SYS_IMMR;     /* base  of IMMR register     */
 663 #endif
 664 #if defined(CONFIG_MPC5xxx)
 665         bd->bi_mbar_base = CONFIG_SYS_MBAR;     /* base of internal registers */
 666 #endif
 667 #if defined(CONFIG_MPC83xx)
 668         bd->bi_immrbar = CONFIG_SYS_IMMR;
 669 #endif
 670
 671         return 0;
 672 }
 673
 674 static int setup_board_part2(void)
 675 {
 676         bd_t *bd = gd->bd;
 677
 678         bd->bi_intfreq = gd->cpu_clk;   /* Internal Freq, in Hz */
 679         bd->bi_busfreq = gd->bus_clk;   /* Bus Freq,      in Hz */
 680 #if defined(CONFIG_CPM2)
 681         bd->bi_cpmfreq = gd->arch.cpm_clk;
 682         bd->bi_brgfreq = gd->arch.brg_clk;
 683         bd->bi_sccfreq = gd->arch.scc_clk;
 684         bd->bi_vco = gd->arch.vco_out;
 685 #endif /* CONFIG_CPM2 */
 686 #if defined(CONFIG_MPC512X)
 687         bd->bi_ipsfreq = gd->arch.ips_clk;
 688 #endif /* CONFIG_MPC512X */
 689 #if defined(CONFIG_MPC5xxx)
 690         bd->bi_ipbfreq = gd->arch.ipb_clk;
 691         bd->bi_pcifreq = gd->pci_clk;
 692 #endif /* CONFIG_MPC5xxx */
 693
 694         return 0;
 695 }
 696 #endif
 697
 698 #ifdef CONFIG_SYS_EXTBDINFO
 699 static int setup_board_extra(void)
 700 {
 701         bd_t *bd = gd->bd;
 702
 703         strncpy((char *) bd->bi_s_version, "1.2", sizeof(bd->bi_s_version));
 704         strncpy((char *) bd->bi_r_version, U_BOOT_VERSION,
 705                 sizeof(bd->bi_r_version));
 706
 707         bd->bi_procfreq = gd->cpu_clk;  /* Processor Speed, In Hz */
 708         bd->bi_plb_busfreq = gd->bus_clk;
 709 #if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \
 710                 defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
 711                 defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
 712         bd->bi_pci_busfreq = get_PCI_freq();
 713         bd->bi_opbfreq = get_OPB_freq();
 714 #elif defined(CONFIG_XILINX_405)
 715         bd->bi_pci_busfreq = get_PCI_freq();
 716 #endif
 717
 718         return 0;
 719 }
 720 #endif
 721
 722 #ifdef CONFIG_POST
 723 static int init_post(void)
 724 {
 725         post_bootmode_init();
 726         post_run(NULL, POST_ROM | post_bootmode_get(0));
 727
 728         return 0;
 729 }
 730 #endif
 731
 732 static int setup_baud_rate(void)
 733 {
 734         /* Ick, can we get rid of this line? */
 735         gd->bd->bi_baudrate = gd->baudrate;
 736
 737         return 0;
 738 }
 739
 740 static int setup_dram_config(void)
 741 {
 742         /* Ram is board specific, so move it to board code ... */
 743         dram_init_banksize();
 744
 745         return 0;
 746 }
 747
 748 static int reloc_fdt(void)
 749 {
 750         if (gd->new_fdt) {
 751                 memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size);
 752                 gd->fdt_blob = gd->new_fdt;
 753         }
 754
 755         return 0;
 756 }
 757
 758 static int setup_reloc(void)
 759 {
 760         gd->relocaddr = gd->dest_addr;
 761         gd->start_addr_sp = gd->dest_addr_sp;
 762         gd->reloc_off = gd->dest_addr - CONFIG_SYS_TEXT_BASE;
 763         memcpy(gd->new_gd, (char *)gd, sizeof(gd_t));
 764
 765         debug("Relocation Offset is: %08lx\n", gd->reloc_off);
 766         debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n",
 767               gd->dest_addr, (ulong)map_to_sysmem(gd->new_gd),
 768               gd->dest_addr_sp);
 769
 770         return 0;
 771 }
 772
 773 /* ARM calls relocate_code from its crt0.S */
 774 #if !defined(CONFIG_ARM)
 775
 776 static int jump_to_copy(void)
 777 {
 778         /*
 779          * x86 is special, but in a nice way. It uses a trampoline which
 780          * enables the dcache if possible.
 781          *
 782          * For now, other archs use relocate_code(), which is implemented
 783          * similarly for all archs. When we do generic relocation, hopefully
 784          * we can make all archs enable the dcache prior to relocation.
 785          */
 786 #ifdef CONFIG_X86
 787         /*
 788          * SDRAM and console are now initialised. The final stack can now
 789          * be setup in SDRAM. Code execution will continue in Flash, but
 790          * with the stack in SDRAM and Global Data in temporary memory
 791          * (CPU cache)
 792          */
 793         board_init_f_r_trampoline(gd->start_addr_sp);
 794 #elif defined(CONFIG_SANDBOX)
 795         board_init_r(gd->new_gd, 0);
 796 #else
 797         relocate_code(gd->dest_addr_sp, gd->new_gd, gd->dest_addr);
 798 #endif
 799
 800         return 0;
 801 }
 802 #endif
 803
 804 /* Record the board_init_f() bootstage (after arch_cpu_init()) */
 805 static int mark_bootstage(void)
 806 {
 807         bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
 808
 809         return 0;
 810 }
 811
 812 static init_fnc_t init_sequence_f[] = {
 813 #if !defined(CONFIG_CPM2) && !defined(CONFIG_MPC512X) && \
 814                 !defined(CONFIG_MPC83xx) && !defined(CONFIG_MPC85xx) && \
 815                 !defined(CONFIG_MPC86xx) && !defined(CONFIG_X86)
 816         zero_global_data,
 817 #endif
 818 #ifdef CONFIG_SANDBOX
 819         setup_ram_buf,
 820 #endif
 821         setup_fdt,
 822         setup_mon_len,
 823 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
 824         /* TODO: can this go into arch_cpu_init()? */
 825         probecpu,
 826 #endif
 827         arch_cpu_init,          /* basic arch cpu dependent setup */
 828 #ifdef CONFIG_X86
 829         cpu_init_f,             /* TODO(sjg@chromium.org): remove */
 830 # ifdef CONFIG_OF_CONTROL
 831         find_fdt,               /* TODO(sjg@chromium.org): remove */
 832 # endif
 833 #endif
 834         mark_bootstage,
 835 #ifdef CONFIG_OF_CONTROL
 836         fdtdec_check_fdt,
 837 #endif
 838 #if defined(CONFIG_BOARD_EARLY_INIT_F)
 839         board_early_init_f,
 840 #endif
 841         /* TODO: can any of this go into arch_cpu_init()? */
 842 #if defined(CONFIG_PPC) && !defined(CONFIG_8xx_CPUCLK_DEFAULT)
 843         get_clocks,             /* get CPU and bus clocks (etc.) */
 844 #if defined(CONFIG_TQM8xxL) && !defined(CONFIG_TQM866M) \
 845                 && !defined(CONFIG_TQM885D)
 846         adjust_sdram_tbs_8xx,
 847 #endif
 848         /* TODO: can we rename this to timer_init()? */
 849         init_timebase,
 850 #endif
 851 #ifdef CONFIG_ARM
 852         timer_init,             /* initialize timer */
 853 #endif
 854 #ifdef CONFIG_BOARD_POSTCLK_INIT
 855         board_postclk_init,
 856 #endif
 857 #ifdef CONFIG_FSL_ESDHC
 858         get_clocks,
 859 #endif
 860 #ifdef CONFIG_SYS_ALLOC_DPRAM
 861 #if !defined(CONFIG_CPM2)
 862         dpram_init,
 863 #endif
 864 #endif
 865 #if defined(CONFIG_BOARD_POSTCLK_INIT)
 866         board_postclk_init,
 867 #endif
 868         env_init,               /* initialize environment */
 869 #if defined(CONFIG_8xx_CPUCLK_DEFAULT)
 870         /* get CPU and bus clocks according to the environment variable */
 871         get_clocks_866,
 872         /* adjust sdram refresh rate according to the new clock */
 873         sdram_adjust_866,
 874         init_timebase,
 875 #endif
 876         init_baud_rate,         /* initialze baudrate settings */
 877         serial_init,            /* serial communications setup */
 878         console_init_f,         /* stage 1 init of console */
 879 #ifdef CONFIG_SANDBOX
 880         sandbox_early_getopt_check,
 881 #endif
 882 #ifdef CONFIG_OF_CONTROL
 883         fdtdec_prepare_fdt,
 884 #endif
 885         display_options,        /* say that we are here */
 886         display_text_info,      /* show debugging info if required */
 887 #if defined(CONFIG_8260)
 888         prt_8260_rsr,
 889         prt_8260_clks,
 890 #endif /* CONFIG_8260 */
 891 #if defined(CONFIG_MPC83xx)
 892         prt_83xx_rsr,
 893 #endif
 894 #ifdef CONFIG_PPC
 895         checkcpu,
 896 #endif
 897 #if defined(CONFIG_DISPLAY_CPUINFO)
 898         print_cpuinfo,          /* display cpu info (and speed) */
 899 #endif
 900 #if defined(CONFIG_MPC5xxx)
 901         prt_mpc5xxx_clks,
 902 #endif /* CONFIG_MPC5xxx */
 903 #if defined(CONFIG_DISPLAY_BOARDINFO)
 904         checkboard,             /* display board info */
 905 #endif
 906         INIT_FUNC_WATCHDOG_INIT
 907 #if defined(CONFIG_MISC_INIT_F)
 908         misc_init_f,
 909 #endif
 910         INIT_FUNC_WATCHDOG_RESET
 911 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 912         init_func_i2c,
 913 #endif
 914 #if defined(CONFIG_HARD_SPI)
 915         init_func_spi,
 916 #endif
 917 #ifdef CONFIG_X86
 918         dram_init_f,            /* configure available RAM banks */
 919         calculate_relocation_address,
 920 #endif
 921         announce_dram_init,
 922         /* TODO: unify all these dram functions? */
 923 #ifdef CONFIG_ARM
 924         dram_init,              /* configure available RAM banks */
 925 #endif
 926 #ifdef CONFIG_PPC
 927         init_func_ram,
 928 #endif
 929 #ifdef CONFIG_POST
 930         post_init_f,
 931 #endif
 932         INIT_FUNC_WATCHDOG_RESET
 933 #if defined(CONFIG_SYS_DRAM_TEST)
 934         testdram,
 935 #endif /* CONFIG_SYS_DRAM_TEST */
 936         INIT_FUNC_WATCHDOG_RESET
 937
 938 #ifdef CONFIG_POST
 939         init_post,
 940 #endif
 941         INIT_FUNC_WATCHDOG_RESET
 942         /*
 943          * Now that we have DRAM mapped and working, we can
 944          * relocate the code and continue running from DRAM.
 945          *
 946          * Reserve memory at end of RAM for (top down in that order):
 947          *  - area that won't get touched by U-Boot and Linux (optional)
 948          *  - kernel log buffer
 949          *  - protected RAM
 950          *  - LCD framebuffer
 951          *  - monitor code
 952          *  - board info struct
 953          */
 954         setup_dest_addr,
 955 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
 956         reserve_logbuffer,
 957 #endif
 958 #ifdef CONFIG_PRAM
 959         reserve_pram,
 960 #endif
 961         reserve_round_4k,
 962 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \
 963                 defined(CONFIG_ARM)
 964         reserve_mmu,
 965 #endif
 966 #ifdef CONFIG_LCD
 967         reserve_lcd,
 968 #endif
 969         /* TODO: Why the dependency on CONFIG_8xx? */
 970 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \
 971                 && !defined(CONFIG_ARM) && !defined(CONFIG_X86)
 972         reserve_video,
 973 #endif
 974         reserve_uboot,
 975 #ifndef CONFIG_SPL_BUILD
 976         reserve_malloc,
 977         reserve_board,
 978 #endif
 979         setup_machine,
 980         reserve_global_data,
 981         reserve_fdt,
 982         reserve_stacks,
 983         setup_dram_config,
 984         show_dram_config,
 985 #ifdef CONFIG_PPC
 986         setup_board_part1,
 987         INIT_FUNC_WATCHDOG_RESET
 988         setup_board_part2,
 989 #endif
 990         setup_baud_rate,
 991         display_new_sp,
 992 #ifdef CONFIG_SYS_EXTBDINFO
 993         setup_board_extra,
 994 #endif
 995         INIT_FUNC_WATCHDOG_RESET
 996         reloc_fdt,
 997         setup_reloc,
 998 #ifndef CONFIG_ARM
 999         jump_to_copy,
1000 #endif
1001         NULL,
1002 };
1003
1004 void board_init_f(ulong boot_flags)
1005 {
1006 #ifndef CONFIG_X86
1007         gd_t data;
1008
1009         gd = &data;
1010 #endif
1011
1012         gd->flags = boot_flags;
1013
1014         if (initcall_run_list(init_sequence_f))
1015                 hang();
1016
1017 #ifndef CONFIG_ARM
1018         /* NOTREACHED - jump_to_copy() does not return */
1019         hang();
1020 #endif
1021 }
1022
1023 #ifdef CONFIG_X86
1024 /*
1025  * For now this code is only used on x86.
1026  *
1027  * init_sequence_f_r is the list of init functions which are run when
1028  * U-Boot is executing from Flash with a semi-limited 'C' environment.
1029  * The following limitations must be considered when implementing an
1030  * '_f_r' function:
1031  *  - 'static' variables are read-only
1032  *  - Global Data (gd->xxx) is read/write
1033  *
1034  * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if
1035  * supported).  It _should_, if possible, copy global data to RAM and
1036  * initialise the CPU caches (to speed up the relocation process)
1037  *
1038  * NOTE: At present only x86 uses this route, but it is intended that
1039  * all archs will move to this when generic relocation is implemented.
1040  */
1041 static init_fnc_t init_sequence_f_r[] = {
1042         init_cache_f_r,
1043         copy_uboot_to_ram,
1044         clear_bss,
1045         do_elf_reloc_fixups,
1046
1047         NULL,
1048 };
1049
1050 void board_init_f_r(void)
1051 {
1052         if (initcall_run_list(init_sequence_f_r))
1053                 hang();
1054
1055         /*
1056          * U-Boot has been copied into SDRAM, the BSS has been cleared etc.
1057          * Transfer execution from Flash to RAM by calculating the address
1058          * of the in-RAM copy of board_init_r() and calling it
1059          */
1060         (board_init_r + gd->reloc_off)(gd, gd->relocaddr);
1061
1062         /* NOTREACHED - board_init_r() does not return */
1063         hang();
1064 }
1065 #endif /* CONFIG_X86 */