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  * SPDX-License-Identifier:     GPL-2.0+
  11  */
  12
  13 #include <common.h>
  14 #include <linux/compiler.h>
  15 #include <version.h>
  16 #include <environment.h>
  17 #include <fdtdec.h>
  18 #include <fs.h>
  19 #if defined(CONFIG_CMD_IDE)
  20 #include <ide.h>
  21 #endif
  22 #include <i2c.h>
  23 #include <initcall.h>
  24 #include <logbuff.h>
  25
  26 /* TODO: Can we move these into arch/ headers? */
  27 #ifdef CONFIG_8xx
  28 #include <mpc8xx.h>
  29 #endif
  30 #ifdef CONFIG_5xx
  31 #include <mpc5xx.h>
  32 #endif
  33 #ifdef CONFIG_MPC5xxx
  34 #include <mpc5xxx.h>
  35 #endif
  36
  37 #include <os.h>
  38 #include <post.h>
  39 #include <spi.h>
  40 #include <trace.h>
  41 #include <watchdog.h>
  42 #include <asm/errno.h>
  43 #include <asm/io.h>
  44 #ifdef CONFIG_MP
  45 #include <asm/mp.h>
  46 #endif
  47 #include <asm/sections.h>
  48 #ifdef CONFIG_X86
  49 #include <asm/init_helpers.h>
  50 #include <asm/relocate.h>
  51 #endif
  52 #ifdef CONFIG_SANDBOX
  53 #include <asm/state.h>
  54 #endif
  55 #include <linux/compiler.h>
  56
  57 /*
  58  * Pointer to initial global data area
  59  *
  60  * Here we initialize it if needed.
  61  */
  62 #ifdef XTRN_DECLARE_GLOBAL_DATA_PTR
  63 #undef  XTRN_DECLARE_GLOBAL_DATA_PTR
  64 #define XTRN_DECLARE_GLOBAL_DATA_PTR    /* empty = allocate here */
  65 DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CONFIG_SYS_INIT_GD_ADDR);
  66 #else
  67 DECLARE_GLOBAL_DATA_PTR;
  68 #endif
  69
  70 /*
  71  * sjg: IMO this code should be
  72  * refactored to a single function, something like:
  73  *
  74  * void led_set_state(enum led_colour_t colour, int on);
  75  */
  76 /************************************************************************
  77  * Coloured LED functionality
  78  ************************************************************************
  79  * May be supplied by boards if desired
  80  */
  81 inline void __coloured_LED_init(void) {}
  82 void coloured_LED_init(void)
  83         __attribute__((weak, alias("__coloured_LED_init")));
  84 inline void __red_led_on(void) {}
  85 void red_led_on(void) __attribute__((weak, alias("__red_led_on")));
  86 inline void __red_led_off(void) {}
  87 void red_led_off(void) __attribute__((weak, alias("__red_led_off")));
  88 inline void __green_led_on(void) {}
  89 void green_led_on(void) __attribute__((weak, alias("__green_led_on")));
  90 inline void __green_led_off(void) {}
  91 void green_led_off(void) __attribute__((weak, alias("__green_led_off")));
  92 inline void __yellow_led_on(void) {}
  93 void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on")));
  94 inline void __yellow_led_off(void) {}
  95 void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off")));
  96 inline void __blue_led_on(void) {}
  97 void blue_led_on(void) __attribute__((weak, alias("__blue_led_on")));
  98 inline void __blue_led_off(void) {}
  99 void blue_led_off(void) __attribute__((weak, alias("__blue_led_off")));
 100
 101 /*
 102  * Why is gd allocated a register? Prior to reloc it might be better to
 103  * just pass it around to each function in this file?
 104  *
 105  * After reloc one could argue that it is hardly used and doesn't need
 106  * to be in a register. Or if it is it should perhaps hold pointers to all
 107  * global data for all modules, so that post-reloc we can avoid the massive
 108  * literal pool we get on ARM. Or perhaps just encourage each module to use
 109  * a structure...
 110  */
 111
 112 /*
 113  * Could the CONFIG_SPL_BUILD infection become a flag in gd?
 114  */
 115
 116 #if defined(CONFIG_WATCHDOG)
 117 static int init_func_watchdog_init(void)
 118 {
 119         puts("       Watchdog enabled\n");
 120         WATCHDOG_RESET();
 121
 122         return 0;
 123 }
 124
 125 int init_func_watchdog_reset(void)
 126 {
 127         WATCHDOG_RESET();
 128
 129         return 0;
 130 }
 131 #endif /* CONFIG_WATCHDOG */
 132
 133 void __board_add_ram_info(int use_default)
 134 {
 135         /* please define platform specific board_add_ram_info() */
 136 }
 137
 138 void board_add_ram_info(int)
 139         __attribute__ ((weak, alias("__board_add_ram_info")));
 140
 141 static int init_baud_rate(void)
 142 {
 143         gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
 144         return 0;
 145 }
 146
 147 static int display_text_info(void)
 148 {
 149 #ifndef CONFIG_SANDBOX
 150         ulong bss_start, bss_end;
 151
 152 #ifdef CONFIG_SYS_SYM_OFFSETS
 153         bss_start = _bss_start_ofs + _TEXT_BASE;
 154         bss_end = _bss_end_ofs + _TEXT_BASE;
 155 #else
 156         bss_start = (ulong)&__bss_start;
 157         bss_end = (ulong)&__bss_end;
 158 #endif
 159         debug("U-Boot code: %08X -> %08lX  BSS: -> %08lX\n",
 160               CONFIG_SYS_TEXT_BASE, bss_start, bss_end);
 161 #endif
 162
 163 #ifdef CONFIG_MODEM_SUPPORT
 164         debug("Modem Support enabled\n");
 165 #endif
 166 #ifdef CONFIG_USE_IRQ
 167         debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
 168         debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
 169 #endif
 170
 171         return 0;
 172 }
 173
 174 static int announce_dram_init(void)
 175 {
 176         puts("DRAM:  ");
 177         return 0;
 178 }
 179
 180 #ifdef CONFIG_PPC
 181 static int init_func_ram(void)
 182 {
 183 #ifdef  CONFIG_BOARD_TYPES
 184         int board_type = gd->board_type;
 185 #else
 186         int board_type = 0;     /* use dummy arg */
 187 #endif
 188
 189         gd->ram_size = initdram(board_type);
 190
 191         if (gd->ram_size > 0)
 192                 return 0;
 193
 194         puts("*** failed ***\n");
 195         return 1;
 196 }
 197 #endif
 198
 199 static int show_dram_config(void)
 200 {
 201         ulong size;
 202
 203 #ifdef CONFIG_NR_DRAM_BANKS
 204         int i;
 205
 206         debug("\nRAM Configuration:\n");
 207         for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
 208                 size += gd->bd->bi_dram[i].size;
 209                 debug("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
 210 #ifdef DEBUG
 211                 print_size(gd->bd->bi_dram[i].size, "\n");
 212 #endif
 213         }
 214         debug("\nDRAM:  ");
 215 #else
 216         size = gd->ram_size;
 217 #endif
 218
 219         print_size(size, "");
 220         board_add_ram_info(0);
 221         putc('\n');
 222
 223         return 0;
 224 }
 225
 226 ulong get_effective_memsize(void)
 227 {
 228 #ifndef CONFIG_VERY_BIG_RAM
 229         return gd->ram_size;
 230 #else
 231         /* limit stack to what we can reasonable map */
 232         return ((gd->ram_size > CONFIG_MAX_MEM_MAPPED) ?
 233                 CONFIG_MAX_MEM_MAPPED : gd->ram_size);
 234 #endif
 235 }
 236
 237 void __dram_init_banksize(void)
 238 {
 239 #if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE)
 240         gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
 241         gd->bd->bi_dram[0].size = get_effective_memsize();
 242 #endif
 243 }
 244
 245 void dram_init_banksize(void)
 246         __attribute__((weak, alias("__dram_init_banksize")));
 247
 248 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
 249 static int init_func_i2c(void)
 250 {
 251         puts("I2C:   ");
 252 #ifdef CONFIG_SYS_I2C
 253         i2c_init_all();
 254 #else
 255         i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
 256 #endif
 257         puts("ready\n");
 258         return 0;
 259 }
 260 #endif
 261
 262 #if defined(CONFIG_HARD_SPI)
 263 static int init_func_spi(void)
 264 {
 265         puts("SPI:   ");
 266         spi_init();
 267         puts("ready\n");
 268         return 0;
 269 }
 270 #endif
 271
 272 __maybe_unused
 273 static int zero_global_data(void)
 274 {
 275         memset((void *)gd, '\0', sizeof(gd_t));
 276
 277         return 0;
 278 }
 279
 280 static int setup_mon_len(void)
 281 {
 282 #ifdef CONFIG_SYS_SYM_OFFSETS
 283         gd->mon_len = _bss_end_ofs;
 284 #elif defined(CONFIG_SANDBOX)
 285         gd->mon_len = (ulong)&_end - (ulong)_init;
 286 #else
 287         /* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */
 288         gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE;
 289 #endif
 290         return 0;
 291 }
 292
 293 __weak int arch_cpu_init(void)
 294 {
 295         return 0;
 296 }
 297
 298 #ifdef CONFIG_OF_HOSTFILE
 299
 300 #define CHECK(x)                err = (x); if (err) goto failed;
 301
 302 /* Create an empty device tree blob */
 303 static int make_empty_fdt(void *fdt)
 304 {
 305         int err;
 306
 307         CHECK(fdt_create(fdt, 256));
 308         CHECK(fdt_finish_reservemap(fdt));
 309         CHECK(fdt_begin_node(fdt, ""));
 310         CHECK(fdt_end_node(fdt));
 311         CHECK(fdt_finish(fdt));
 312
 313         return 0;
 314 failed:
 315         printf("Unable to create empty FDT: %s\n", fdt_strerror(err));
 316         return -EACCES;
 317 }
 318
 319 static int read_fdt_from_file(void)
 320 {
 321         struct sandbox_state *state = state_get_current();
 322         void *blob;
 323         int size;
 324         int err;
 325
 326         blob = map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR, 0);
 327         if (!state->fdt_fname) {
 328                 err = make_empty_fdt(blob);
 329                 if (!err)
 330                         goto done;
 331                 return err;
 332         }
 333         err = fs_set_blk_dev("host", NULL, FS_TYPE_SANDBOX);
 334         if (err)
 335                 return err;
 336         size = fs_read(state->fdt_fname, CONFIG_SYS_FDT_LOAD_ADDR, 0, 0);
 337         if (size < 0)
 338                 return -EIO;
 339
 340 done:
 341         gd->fdt_blob = blob;
 342
 343         return 0;
 344 }
 345 #endif
 346
 347 #ifdef CONFIG_SANDBOX
 348 static int setup_ram_buf(void)
 349 {
 350         struct sandbox_state *state = state_get_current();
 351
 352         gd->arch.ram_buf = state->ram_buf;
 353         gd->ram_size = state->ram_size;
 354
 355         return 0;
 356 }
 357 #endif
 358
 359 static int setup_fdt(void)
 360 {
 361 #ifdef CONFIG_OF_EMBED
 362         /* Get a pointer to the FDT */
 363         gd->fdt_blob = __dtb_dt_begin;
 364 #elif defined CONFIG_OF_SEPARATE
 365         /* FDT is at end of image */
 366 # ifdef CONFIG_SYS_SYM_OFFSETS
 367         gd->fdt_blob = (void *)(_end_ofs + CONFIG_SYS_TEXT_BASE);
 368 # else
 369         gd->fdt_blob = (ulong *)&_end;
 370 # endif
 371 #elif defined(CONFIG_OF_HOSTFILE)
 372         if (read_fdt_from_file()) {
 373                 puts("Failed to read control FDT\n");
 374                 return -1;
 375         }
 376 #endif
 377         /* Allow the early environment to override the fdt address */
 378         gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
 379                                                 (uintptr_t)gd->fdt_blob);
 380         return 0;
 381 }
 382
 383 /* Get the top of usable RAM */
 384 __weak ulong board_get_usable_ram_top(ulong total_size)
 385 {
 386         return gd->ram_top;
 387 }
 388
 389 static int setup_dest_addr(void)
 390 {
 391         debug("Monitor len: %08lX\n", gd->mon_len);
 392         /*
 393          * Ram is setup, size stored in gd !!
 394          */
 395         debug("Ram size: %08lX\n", (ulong)gd->ram_size);
 396 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
 397         /*
 398          * Subtract specified amount of memory to hide so that it won't
 399          * get "touched" at all by U-Boot. By fixing up gd->ram_size
 400          * the Linux kernel should now get passed the now "corrected"
 401          * memory size and won't touch it either. This should work
 402          * for arch/ppc and arch/powerpc. Only Linux board ports in
 403          * arch/powerpc with bootwrapper support, that recalculate the
 404          * memory size from the SDRAM controller setup will have to
 405          * get fixed.
 406          */
 407         gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
 408 #endif
 409 #ifdef CONFIG_SYS_SDRAM_BASE
 410         gd->ram_top = CONFIG_SYS_SDRAM_BASE;
 411 #endif
 412         gd->ram_top += get_effective_memsize();
 413         gd->ram_top = board_get_usable_ram_top(gd->mon_len);
 414         gd->relocaddr = gd->ram_top;
 415         debug("Ram top: %08lX\n", (ulong)gd->ram_top);
 416 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
 417         /*
 418          * We need to make sure the location we intend to put secondary core
 419          * boot code is reserved and not used by any part of u-boot
 420          */
 421         if (gd->relocaddr > determine_mp_bootpg(NULL)) {
 422                 gd->relocaddr = determine_mp_bootpg(NULL);
 423                 debug("Reserving MP boot page to %08lx\n", gd->relocaddr);
 424         }
 425 #endif
 426         return 0;
 427 }
 428
 429 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
 430 static int reserve_logbuffer(void)
 431 {
 432         /* reserve kernel log buffer */
 433         gd->relocaddr -= LOGBUFF_RESERVE;
 434         debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
 435                 gd->relocaddr);
 436         return 0;
 437 }
 438 #endif
 439
 440 #ifdef CONFIG_PRAM
 441 /* reserve protected RAM */
 442 static int reserve_pram(void)
 443 {
 444         ulong reg;
 445
 446         reg = getenv_ulong("pram", 10, CONFIG_PRAM);
 447         gd->relocaddr -= (reg << 10);           /* size is in kB */
 448         debug("Reserving %ldk for protected RAM at %08lx\n", reg,
 449               gd->relocaddr);
 450         return 0;
 451 }
 452 #endif /* CONFIG_PRAM */
 453
 454 /* Round memory pointer down to next 4 kB limit */
 455 static int reserve_round_4k(void)
 456 {
 457         gd->relocaddr &= ~(4096 - 1);
 458         return 0;
 459 }
 460
 461 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \
 462                 defined(CONFIG_ARM)
 463 static int reserve_mmu(void)
 464 {
 465         /* reserve TLB table */
 466         gd->arch.tlb_size = PGTABLE_SIZE;
 467         gd->relocaddr -= gd->arch.tlb_size;
 468
 469         /* round down to next 64 kB limit */
 470         gd->relocaddr &= ~(0x10000 - 1);
 471
 472         gd->arch.tlb_addr = gd->relocaddr;
 473         debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr,
 474               gd->arch.tlb_addr + gd->arch.tlb_size);
 475         return 0;
 476 }
 477 #endif
 478
 479 #ifdef CONFIG_LCD
 480 static int reserve_lcd(void)
 481 {
 482 #ifdef CONFIG_FB_ADDR
 483         gd->fb_base = CONFIG_FB_ADDR;
 484 #else
 485         /* reserve memory for LCD display (always full pages) */
 486         gd->relocaddr = lcd_setmem(gd->relocaddr);
 487         gd->fb_base = gd->relocaddr;
 488 #endif /* CONFIG_FB_ADDR */
 489         return 0;
 490 }
 491 #endif /* CONFIG_LCD */
 492
 493 static int reserve_trace(void)
 494 {
 495 #ifdef CONFIG_TRACE
 496         gd->relocaddr -= CONFIG_TRACE_BUFFER_SIZE;
 497         gd->trace_buff = map_sysmem(gd->relocaddr, CONFIG_TRACE_BUFFER_SIZE);
 498         debug("Reserving %dk for trace data at: %08lx\n",
 499               CONFIG_TRACE_BUFFER_SIZE >> 10, gd->relocaddr);
 500 #endif
 501
 502         return 0;
 503 }
 504
 505 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \
 506                 && !defined(CONFIG_ARM) && !defined(CONFIG_X86)
 507 static int reserve_video(void)
 508 {
 509         /* reserve memory for video display (always full pages) */
 510         gd->relocaddr = video_setmem(gd->relocaddr);
 511         gd->fb_base = gd->relocaddr;
 512
 513         return 0;
 514 }
 515 #endif
 516
 517 static int reserve_uboot(void)
 518 {
 519         /*
 520          * reserve memory for U-Boot code, data & bss
 521          * round down to next 4 kB limit
 522          */
 523         gd->relocaddr -= gd->mon_len;
 524         gd->relocaddr &= ~(4096 - 1);
 525 #ifdef CONFIG_E500
 526         /* round down to next 64 kB limit so that IVPR stays aligned */
 527         gd->relocaddr &= ~(65536 - 1);
 528 #endif
 529
 530         debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10,
 531               gd->relocaddr);
 532
 533         gd->start_addr_sp = gd->relocaddr;
 534
 535         return 0;
 536 }
 537
 538 #ifndef CONFIG_SPL_BUILD
 539 /* reserve memory for malloc() area */
 540 static int reserve_malloc(void)
 541 {
 542         gd->start_addr_sp = gd->start_addr_sp - TOTAL_MALLOC_LEN;
 543         debug("Reserving %dk for malloc() at: %08lx\n",
 544                         TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp);
 545         return 0;
 546 }
 547
 548 /* (permanently) allocate a Board Info struct */
 549 static int reserve_board(void)
 550 {
 551         gd->start_addr_sp -= sizeof(bd_t);
 552         gd->bd = (bd_t *)map_sysmem(gd->start_addr_sp, sizeof(bd_t));
 553         memset(gd->bd, '\0', sizeof(bd_t));
 554         debug("Reserving %zu Bytes for Board Info at: %08lx\n",
 555                         sizeof(bd_t), gd->start_addr_sp);
 556         return 0;
 557 }
 558 #endif
 559
 560 static int setup_machine(void)
 561 {
 562 #ifdef CONFIG_MACH_TYPE
 563         gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
 564 #endif
 565         return 0;
 566 }
 567
 568 static int reserve_global_data(void)
 569 {
 570         gd->start_addr_sp -= sizeof(gd_t);
 571         gd->new_gd = (gd_t *)map_sysmem(gd->start_addr_sp, sizeof(gd_t));
 572         debug("Reserving %zu Bytes for Global Data at: %08lx\n",
 573                         sizeof(gd_t), gd->start_addr_sp);
 574         return 0;
 575 }
 576
 577 static int reserve_fdt(void)
 578 {
 579         /*
 580          * If the device tree is sitting immediate above our image then we
 581          * must relocate it. If it is embedded in the data section, then it
 582          * will be relocated with other data.
 583          */
 584         if (gd->fdt_blob) {
 585                 gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
 586
 587                 gd->start_addr_sp -= gd->fdt_size;
 588                 gd->new_fdt = map_sysmem(gd->start_addr_sp, gd->fdt_size);
 589                 debug("Reserving %lu Bytes for FDT at: %08lx\n",
 590                       gd->fdt_size, gd->start_addr_sp);
 591         }
 592
 593         return 0;
 594 }
 595
 596 static int reserve_stacks(void)
 597 {
 598 #ifdef CONFIG_SPL_BUILD
 599 # ifdef CONFIG_ARM
 600         gd->start_addr_sp -= 128;       /* leave 32 words for abort-stack */
 601         gd->irq_sp = gd->start_addr_sp;
 602 # endif
 603 #else
 604 # ifdef CONFIG_PPC
 605         ulong *s;
 606 # endif
 607
 608         /* setup stack pointer for exceptions */
 609         gd->start_addr_sp -= 16;
 610         gd->start_addr_sp &= ~0xf;
 611         gd->irq_sp = gd->start_addr_sp;
 612
 613         /*
 614          * Handle architecture-specific things here
 615          * TODO(sjg@chromium.org): Perhaps create arch_reserve_stack()
 616          * to handle this and put in arch/xxx/lib/stack.c
 617          */
 618 # if defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
 619 #  ifdef CONFIG_USE_IRQ
 620         gd->start_addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ);
 621         debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
 622                 CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ, gd->start_addr_sp);
 623
 624         /* 8-byte alignment for ARM ABI compliance */
 625         gd->start_addr_sp &= ~0x07;
 626 #  endif
 627         /* leave 3 words for abort-stack, plus 1 for alignment */
 628         gd->start_addr_sp -= 16;
 629 # elif defined(CONFIG_PPC)
 630         /* Clear initial stack frame */
 631         s = (ulong *) gd->start_addr_sp;
 632         *s = 0; /* Terminate back chain */
 633         *++s = 0; /* NULL return address */
 634 # endif /* Architecture specific code */
 635
 636         return 0;
 637 #endif
 638 }
 639
 640 static int display_new_sp(void)
 641 {
 642         debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp);
 643
 644         return 0;
 645 }
 646
 647 #ifdef CONFIG_PPC
 648 static int setup_board_part1(void)
 649 {
 650         bd_t *bd = gd->bd;
 651
 652         /*
 653          * Save local variables to board info struct
 654          */
 655
 656         bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;        /* start of memory */
 657         bd->bi_memsize = gd->ram_size;                  /* size in bytes */
 658
 659 #ifdef CONFIG_SYS_SRAM_BASE
 660         bd->bi_sramstart = CONFIG_SYS_SRAM_BASE;        /* start of SRAM */
 661         bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE;         /* size  of SRAM */
 662 #endif
 663
 664 #if defined(CONFIG_8xx) || defined(CONFIG_8260) || defined(CONFIG_5xx) || \
 665                 defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
 666         bd->bi_immr_base = CONFIG_SYS_IMMR;     /* base  of IMMR register     */
 667 #endif
 668 #if defined(CONFIG_MPC5xxx)
 669         bd->bi_mbar_base = CONFIG_SYS_MBAR;     /* base of internal registers */
 670 #endif
 671 #if defined(CONFIG_MPC83xx)
 672         bd->bi_immrbar = CONFIG_SYS_IMMR;
 673 #endif
 674
 675         return 0;
 676 }
 677
 678 static int setup_board_part2(void)
 679 {
 680         bd_t *bd = gd->bd;
 681
 682         bd->bi_intfreq = gd->cpu_clk;   /* Internal Freq, in Hz */
 683         bd->bi_busfreq = gd->bus_clk;   /* Bus Freq,      in Hz */
 684 #if defined(CONFIG_CPM2)
 685         bd->bi_cpmfreq = gd->arch.cpm_clk;
 686         bd->bi_brgfreq = gd->arch.brg_clk;
 687         bd->bi_sccfreq = gd->arch.scc_clk;
 688         bd->bi_vco = gd->arch.vco_out;
 689 #endif /* CONFIG_CPM2 */
 690 #if defined(CONFIG_MPC512X)
 691         bd->bi_ipsfreq = gd->arch.ips_clk;
 692 #endif /* CONFIG_MPC512X */
 693 #if defined(CONFIG_MPC5xxx)
 694         bd->bi_ipbfreq = gd->arch.ipb_clk;
 695         bd->bi_pcifreq = gd->pci_clk;
 696 #endif /* CONFIG_MPC5xxx */
 697
 698         return 0;
 699 }
 700 #endif
 701
 702 #ifdef CONFIG_SYS_EXTBDINFO
 703 static int setup_board_extra(void)
 704 {
 705         bd_t *bd = gd->bd;
 706
 707         strncpy((char *) bd->bi_s_version, "1.2", sizeof(bd->bi_s_version));
 708         strncpy((char *) bd->bi_r_version, U_BOOT_VERSION,
 709                 sizeof(bd->bi_r_version));
 710
 711         bd->bi_procfreq = gd->cpu_clk;  /* Processor Speed, In Hz */
 712         bd->bi_plb_busfreq = gd->bus_clk;
 713 #if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \
 714                 defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
 715                 defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
 716         bd->bi_pci_busfreq = get_PCI_freq();
 717         bd->bi_opbfreq = get_OPB_freq();
 718 #elif defined(CONFIG_XILINX_405)
 719         bd->bi_pci_busfreq = get_PCI_freq();
 720 #endif
 721
 722         return 0;
 723 }
 724 #endif
 725
 726 #ifdef CONFIG_POST
 727 static int init_post(void)
 728 {
 729         post_bootmode_init();
 730         post_run(NULL, POST_ROM | post_bootmode_get(0));
 731
 732         return 0;
 733 }
 734 #endif
 735
 736 static int setup_baud_rate(void)
 737 {
 738         /* Ick, can we get rid of this line? */
 739         gd->bd->bi_baudrate = gd->baudrate;
 740
 741         return 0;
 742 }
 743
 744 static int setup_dram_config(void)
 745 {
 746         /* Ram is board specific, so move it to board code ... */
 747         dram_init_banksize();
 748
 749         return 0;
 750 }
 751
 752 static int reloc_fdt(void)
 753 {
 754         if (gd->new_fdt) {
 755                 memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size);
 756                 gd->fdt_blob = gd->new_fdt;
 757         }
 758
 759         return 0;
 760 }
 761
 762 static int setup_reloc(void)
 763 {
 764         gd->reloc_off = gd->relocaddr - CONFIG_SYS_TEXT_BASE;
 765         memcpy(gd->new_gd, (char *)gd, sizeof(gd_t));
 766
 767         debug("Relocation Offset is: %08lx\n", gd->reloc_off);
 768         debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n",
 769               gd->relocaddr, (ulong)map_to_sysmem(gd->new_gd),
 770               gd->start_addr_sp);
 771
 772         return 0;
 773 }
 774
 775 /* ARM calls relocate_code from its crt0.S */
 776 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX)
 777
 778 static int jump_to_copy(void)
 779 {
 780         /*
 781          * x86 is special, but in a nice way. It uses a trampoline which
 782          * enables the dcache if possible.
 783          *
 784          * For now, other archs use relocate_code(), which is implemented
 785          * similarly for all archs. When we do generic relocation, hopefully
 786          * we can make all archs enable the dcache prior to relocation.
 787          */
 788 #ifdef CONFIG_X86
 789         /*
 790          * SDRAM and console are now initialised. The final stack can now
 791          * be setup in SDRAM. Code execution will continue in Flash, but
 792          * with the stack in SDRAM and Global Data in temporary memory
 793          * (CPU cache)
 794          */
 795         board_init_f_r_trampoline(gd->start_addr_sp);
 796 #else
 797         relocate_code(gd->start_addr_sp, gd->new_gd, gd->relocaddr);
 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 #ifdef CONFIG_SANDBOX
 814         setup_ram_buf,
 815 #endif
 816         setup_mon_len,
 817         setup_fdt,
 818         trace_early_init,
 819 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
 820         /* TODO: can this go into arch_cpu_init()? */
 821         probecpu,
 822 #endif
 823         arch_cpu_init,          /* basic arch cpu dependent setup */
 824 #ifdef CONFIG_X86
 825         cpu_init_f,             /* TODO(sjg@chromium.org): remove */
 826 # ifdef CONFIG_OF_CONTROL
 827         find_fdt,               /* TODO(sjg@chromium.org): remove */
 828 # endif
 829 #endif
 830         mark_bootstage,
 831 #ifdef CONFIG_OF_CONTROL
 832         fdtdec_check_fdt,
 833 #endif
 834 #if defined(CONFIG_BOARD_EARLY_INIT_F)
 835         board_early_init_f,
 836 #endif
 837         /* TODO: can any of this go into arch_cpu_init()? */
 838 #if defined(CONFIG_PPC) && !defined(CONFIG_8xx_CPUCLK_DEFAULT)
 839         get_clocks,             /* get CPU and bus clocks (etc.) */
 840 #if defined(CONFIG_TQM8xxL) && !defined(CONFIG_TQM866M) \
 841                 && !defined(CONFIG_TQM885D)
 842         adjust_sdram_tbs_8xx,
 843 #endif
 844         /* TODO: can we rename this to timer_init()? */
 845         init_timebase,
 846 #endif
 847 #ifdef CONFIG_ARM
 848         timer_init,             /* initialize timer */
 849 #endif
 850 #ifdef CONFIG_SYS_ALLOC_DPRAM
 851 #if !defined(CONFIG_CPM2)
 852         dpram_init,
 853 #endif
 854 #endif
 855 #if defined(CONFIG_BOARD_POSTCLK_INIT)
 856         board_postclk_init,
 857 #endif
 858 #ifdef CONFIG_FSL_ESDHC
 859         get_clocks,
 860 #endif
 861         env_init,               /* initialize environment */
 862 #if defined(CONFIG_8xx_CPUCLK_DEFAULT)
 863         /* get CPU and bus clocks according to the environment variable */
 864         get_clocks_866,
 865         /* adjust sdram refresh rate according to the new clock */
 866         sdram_adjust_866,
 867         init_timebase,
 868 #endif
 869         init_baud_rate,         /* initialze baudrate settings */
 870         serial_init,            /* serial communications setup */
 871         console_init_f,         /* stage 1 init of console */
 872 #ifdef CONFIG_SANDBOX
 873         sandbox_early_getopt_check,
 874 #endif
 875 #ifdef CONFIG_OF_CONTROL
 876         fdtdec_prepare_fdt,
 877 #endif
 878         display_options,        /* say that we are here */
 879         display_text_info,      /* show debugging info if required */
 880 #if defined(CONFIG_8260)
 881         prt_8260_rsr,
 882         prt_8260_clks,
 883 #endif /* CONFIG_8260 */
 884 #if defined(CONFIG_MPC83xx)
 885         prt_83xx_rsr,
 886 #endif
 887 #ifdef CONFIG_PPC
 888         checkcpu,
 889 #endif
 890 #if defined(CONFIG_DISPLAY_CPUINFO)
 891         print_cpuinfo,          /* display cpu info (and speed) */
 892 #endif
 893 #if defined(CONFIG_MPC5xxx)
 894         prt_mpc5xxx_clks,
 895 #endif /* CONFIG_MPC5xxx */
 896 #if defined(CONFIG_DISPLAY_BOARDINFO)
 897         checkboard,             /* display board info */
 898 #endif
 899         INIT_FUNC_WATCHDOG_INIT
 900 #if defined(CONFIG_MISC_INIT_F)
 901         misc_init_f,
 902 #endif
 903         INIT_FUNC_WATCHDOG_RESET
 904 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
 905         init_func_i2c,
 906 #endif
 907 #if defined(CONFIG_HARD_SPI)
 908         init_func_spi,
 909 #endif
 910 #ifdef CONFIG_X86
 911         dram_init_f,            /* configure available RAM banks */
 912         calculate_relocation_address,
 913 #endif
 914         announce_dram_init,
 915         /* TODO: unify all these dram functions? */
 916 #ifdef CONFIG_ARM
 917         dram_init,              /* configure available RAM banks */
 918 #endif
 919 #ifdef CONFIG_PPC
 920         init_func_ram,
 921 #endif
 922 #ifdef CONFIG_POST
 923         post_init_f,
 924 #endif
 925         INIT_FUNC_WATCHDOG_RESET
 926 #if defined(CONFIG_SYS_DRAM_TEST)
 927         testdram,
 928 #endif /* CONFIG_SYS_DRAM_TEST */
 929         INIT_FUNC_WATCHDOG_RESET
 930
 931 #ifdef CONFIG_POST
 932         init_post,
 933 #endif
 934         INIT_FUNC_WATCHDOG_RESET
 935         /*
 936          * Now that we have DRAM mapped and working, we can
 937          * relocate the code and continue running from DRAM.
 938          *
 939          * Reserve memory at end of RAM for (top down in that order):
 940          *  - area that won't get touched by U-Boot and Linux (optional)
 941          *  - kernel log buffer
 942          *  - protected RAM
 943          *  - LCD framebuffer
 944          *  - monitor code
 945          *  - board info struct
 946          */
 947         setup_dest_addr,
 948 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
 949         reserve_logbuffer,
 950 #endif
 951 #ifdef CONFIG_PRAM
 952         reserve_pram,
 953 #endif
 954         reserve_round_4k,
 955 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \
 956                 defined(CONFIG_ARM)
 957         reserve_mmu,
 958 #endif
 959 #ifdef CONFIG_LCD
 960         reserve_lcd,
 961 #endif
 962         reserve_trace,
 963         /* TODO: Why the dependency on CONFIG_8xx? */
 964 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \
 965                 && !defined(CONFIG_ARM) && !defined(CONFIG_X86)
 966         reserve_video,
 967 #endif
 968         reserve_uboot,
 969 #ifndef CONFIG_SPL_BUILD
 970         reserve_malloc,
 971         reserve_board,
 972 #endif
 973         setup_machine,
 974         reserve_global_data,
 975         reserve_fdt,
 976         reserve_stacks,
 977         setup_dram_config,
 978         show_dram_config,
 979 #ifdef CONFIG_PPC
 980         setup_board_part1,
 981         INIT_FUNC_WATCHDOG_RESET
 982         setup_board_part2,
 983 #endif
 984         setup_baud_rate,
 985         display_new_sp,
 986 #ifdef CONFIG_SYS_EXTBDINFO
 987         setup_board_extra,
 988 #endif
 989         INIT_FUNC_WATCHDOG_RESET
 990         reloc_fdt,
 991         setup_reloc,
 992 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX)
 993         jump_to_copy,
 994 #endif
 995         NULL,
 996 };
 997
 998 void board_init_f(ulong boot_flags)
 999 {
1000 #ifndef CONFIG_X86
1001         gd_t data;
1002
1003         gd = &data;
1004 #endif
1005
1006         /*
1007          * Clear global data before it is accessed at debug print
1008          * in initcall_run_list. Otherwise the debug print probably
1009          * get the wrong vaule of gd->have_console.
1010          */
1011 #if !defined(CONFIG_CPM2) && !defined(CONFIG_MPC512X) && \
1012                 !defined(CONFIG_MPC83xx) && !defined(CONFIG_MPC85xx) && \
1013                 !defined(CONFIG_MPC86xx) && !defined(CONFIG_X86)
1014         zero_global_data();
1015 #endif
1016
1017         gd->flags = boot_flags;
1018         gd->have_console = 0;
1019
1020         if (initcall_run_list(init_sequence_f))
1021                 hang();
1022
1023 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX)
1024         /* NOTREACHED - jump_to_copy() does not return */
1025         hang();
1026 #endif
1027 }
1028
1029 #ifdef CONFIG_X86
1030 /*
1031  * For now this code is only used on x86.
1032  *
1033  * init_sequence_f_r is the list of init functions which are run when
1034  * U-Boot is executing from Flash with a semi-limited 'C' environment.
1035  * The following limitations must be considered when implementing an
1036  * '_f_r' function:
1037  *  - 'static' variables are read-only
1038  *  - Global Data (gd->xxx) is read/write
1039  *
1040  * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if
1041  * supported).  It _should_, if possible, copy global data to RAM and
1042  * initialise the CPU caches (to speed up the relocation process)
1043  *
1044  * NOTE: At present only x86 uses this route, but it is intended that
1045  * all archs will move to this when generic relocation is implemented.
1046  */
1047 static init_fnc_t init_sequence_f_r[] = {
1048         init_cache_f_r,
1049         copy_uboot_to_ram,
1050         clear_bss,
1051         do_elf_reloc_fixups,
1052
1053         NULL,
1054 };
1055
1056 void board_init_f_r(void)
1057 {
1058         if (initcall_run_list(init_sequence_f_r))
1059                 hang();
1060
1061         /*
1062          * U-Boot has been copied into SDRAM, the BSS has been cleared etc.
1063          * Transfer execution from Flash to RAM by calculating the address
1064          * of the in-RAM copy of board_init_r() and calling it
1065          */
1066         (board_init_r + gd->reloc_off)(gd, gd->relocaddr);
1067
1068         /* NOTREACHED - board_init_r() does not return */
1069         hang();
1070 }
1071 #endif /* CONFIG_X86 */