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_SOFT_I2C)
 249 static int init_func_i2c(void)
 250 {
 251         puts("I2C:   ");
 252         i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
 253         puts("ready\n");
 254         return 0;
 255 }
 256 #endif
 257
 258 #if defined(CONFIG_HARD_SPI)
 259 static int init_func_spi(void)
 260 {
 261         puts("SPI:   ");
 262         spi_init();
 263         puts("ready\n");
 264         return 0;
 265 }
 266 #endif
 267
 268 __maybe_unused
 269 static int zero_global_data(void)
 270 {
 271         memset((void *)gd, '\0', sizeof(gd_t));
 272
 273         return 0;
 274 }
 275
 276 static int setup_mon_len(void)
 277 {
 278 #ifdef CONFIG_SYS_SYM_OFFSETS
 279         gd->mon_len = _bss_end_ofs;
 280 #elif defined(CONFIG_SANDBOX)
 281         gd->mon_len = (ulong)&_end - (ulong)_init;
 282 #else
 283         /* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */
 284         gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE;
 285 #endif
 286         return 0;
 287 }
 288
 289 __weak int arch_cpu_init(void)
 290 {
 291         return 0;
 292 }
 293
 294 #ifdef CONFIG_OF_HOSTFILE
 295
 296 #define CHECK(x)                err = (x); if (err) goto failed;
 297
 298 /* Create an empty device tree blob */
 299 static int make_empty_fdt(void *fdt)
 300 {
 301         int err;
 302
 303         CHECK(fdt_create(fdt, 256));
 304         CHECK(fdt_finish_reservemap(fdt));
 305         CHECK(fdt_begin_node(fdt, ""));
 306         CHECK(fdt_end_node(fdt));
 307         CHECK(fdt_finish(fdt));
 308
 309         return 0;
 310 failed:
 311         printf("Unable to create empty FDT: %s\n", fdt_strerror(err));
 312         return -EACCES;
 313 }
 314
 315 static int read_fdt_from_file(void)
 316 {
 317         struct sandbox_state *state = state_get_current();
 318         void *blob;
 319         int size;
 320         int err;
 321
 322         blob = map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR, 0);
 323         if (!state->fdt_fname) {
 324                 err = make_empty_fdt(blob);
 325                 if (!err)
 326                         goto done;
 327                 return err;
 328         }
 329         err = fs_set_blk_dev("host", NULL, FS_TYPE_SANDBOX);
 330         if (err)
 331                 return err;
 332         size = fs_read(state->fdt_fname, CONFIG_SYS_FDT_LOAD_ADDR, 0, 0);
 333         if (size < 0)
 334                 return -EIO;
 335
 336 done:
 337         gd->fdt_blob = blob;
 338
 339         return 0;
 340 }
 341 #endif
 342
 343 #ifdef CONFIG_SANDBOX
 344 static int setup_ram_buf(void)
 345 {
 346         gd->arch.ram_buf = os_malloc(CONFIG_SYS_SDRAM_SIZE);
 347         assert(gd->arch.ram_buf);
 348         gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
 349
 350         return 0;
 351 }
 352 #endif
 353
 354 static int setup_fdt(void)
 355 {
 356 #ifdef CONFIG_OF_EMBED
 357         /* Get a pointer to the FDT */
 358         gd->fdt_blob = _binary_dt_dtb_start;
 359 #elif defined CONFIG_OF_SEPARATE
 360         /* FDT is at end of image */
 361 # ifdef CONFIG_SYS_SYM_OFFSETS
 362         gd->fdt_blob = (void *)(_end_ofs + CONFIG_SYS_TEXT_BASE);
 363 # else
 364         gd->fdt_blob = (ulong *)&_end;
 365 # endif
 366 #elif defined(CONFIG_OF_HOSTFILE)
 367         if (read_fdt_from_file()) {
 368                 puts("Failed to read control FDT\n");
 369                 return -1;
 370         }
 371 #endif
 372         /* Allow the early environment to override the fdt address */
 373         gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
 374                                                 (uintptr_t)gd->fdt_blob);
 375         return 0;
 376 }
 377
 378 /* Get the top of usable RAM */
 379 __weak ulong board_get_usable_ram_top(ulong total_size)
 380 {
 381         return gd->ram_top;
 382 }
 383
 384 static int setup_dest_addr(void)
 385 {
 386         debug("Monitor len: %08lX\n", gd->mon_len);
 387         /*
 388          * Ram is setup, size stored in gd !!
 389          */
 390         debug("Ram size: %08lX\n", (ulong)gd->ram_size);
 391 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
 392         /*
 393          * Subtract specified amount of memory to hide so that it won't
 394          * get "touched" at all by U-Boot. By fixing up gd->ram_size
 395          * the Linux kernel should now get passed the now "corrected"
 396          * memory size and won't touch it either. This should work
 397          * for arch/ppc and arch/powerpc. Only Linux board ports in
 398          * arch/powerpc with bootwrapper support, that recalculate the
 399          * memory size from the SDRAM controller setup will have to
 400          * get fixed.
 401          */
 402         gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
 403 #endif
 404 #ifdef CONFIG_SYS_SDRAM_BASE
 405         gd->ram_top = CONFIG_SYS_SDRAM_BASE;
 406 #endif
 407         gd->ram_top += get_effective_memsize();
 408         gd->ram_top = board_get_usable_ram_top(gd->mon_len);
 409         gd->relocaddr = gd->ram_top;
 410         debug("Ram top: %08lX\n", (ulong)gd->ram_top);
 411 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
 412         /*
 413          * We need to make sure the location we intend to put secondary core
 414          * boot code is reserved and not used by any part of u-boot
 415          */
 416         if (gd->relocaddr > determine_mp_bootpg(NULL)) {
 417                 gd->relocaddr = determine_mp_bootpg(NULL);
 418                 debug("Reserving MP boot page to %08lx\n", gd->relocaddr);
 419         }
 420 #endif
 421         return 0;
 422 }
 423
 424 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
 425 static int reserve_logbuffer(void)
 426 {
 427         /* reserve kernel log buffer */
 428         gd->relocaddr -= LOGBUFF_RESERVE;
 429         debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
 430                 gd->relocaddr);
 431         return 0;
 432 }
 433 #endif
 434
 435 #ifdef CONFIG_PRAM
 436 /* reserve protected RAM */
 437 static int reserve_pram(void)
 438 {
 439         ulong reg;
 440
 441         reg = getenv_ulong("pram", 10, CONFIG_PRAM);
 442         gd->relocaddr -= (reg << 10);           /* size is in kB */
 443         debug("Reserving %ldk for protected RAM at %08lx\n", reg,
 444               gd->relocaddr);
 445         return 0;
 446 }
 447 #endif /* CONFIG_PRAM */
 448
 449 /* Round memory pointer down to next 4 kB limit */
 450 static int reserve_round_4k(void)
 451 {
 452         gd->relocaddr &= ~(4096 - 1);
 453         return 0;
 454 }
 455
 456 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \
 457                 defined(CONFIG_ARM)
 458 static int reserve_mmu(void)
 459 {
 460         /* reserve TLB table */
 461         gd->arch.tlb_size = 4096 * 4;
 462         gd->relocaddr -= gd->arch.tlb_size;
 463
 464         /* round down to next 64 kB limit */
 465         gd->relocaddr &= ~(0x10000 - 1);
 466
 467         gd->arch.tlb_addr = gd->relocaddr;
 468         debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr,
 469               gd->arch.tlb_addr + gd->arch.tlb_size);
 470         return 0;
 471 }
 472 #endif
 473
 474 #ifdef CONFIG_LCD
 475 static int reserve_lcd(void)
 476 {
 477 #ifdef CONFIG_FB_ADDR
 478         gd->fb_base = CONFIG_FB_ADDR;
 479 #else
 480         /* reserve memory for LCD display (always full pages) */
 481         gd->relocaddr = lcd_setmem(gd->relocaddr);
 482         gd->fb_base = gd->relocaddr;
 483 #endif /* CONFIG_FB_ADDR */
 484         return 0;
 485 }
 486 #endif /* CONFIG_LCD */
 487
 488 static int reserve_trace(void)
 489 {
 490 #ifdef CONFIG_TRACE
 491         gd->relocaddr -= CONFIG_TRACE_BUFFER_SIZE;
 492         gd->trace_buff = map_sysmem(gd->relocaddr, CONFIG_TRACE_BUFFER_SIZE);
 493         debug("Reserving %dk for trace data at: %08lx\n",
 494               CONFIG_TRACE_BUFFER_SIZE >> 10, gd->relocaddr);
 495 #endif
 496
 497         return 0;
 498 }
 499
 500 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \
 501                 && !defined(CONFIG_ARM) && !defined(CONFIG_X86)
 502 static int reserve_video(void)
 503 {
 504         /* reserve memory for video display (always full pages) */
 505         gd->relocaddr = video_setmem(gd->relocaddr);
 506         gd->fb_base = gd->relocaddr;
 507
 508         return 0;
 509 }
 510 #endif
 511
 512 static int reserve_uboot(void)
 513 {
 514         /*
 515          * reserve memory for U-Boot code, data & bss
 516          * round down to next 4 kB limit
 517          */
 518         gd->relocaddr -= gd->mon_len;
 519         gd->relocaddr &= ~(4096 - 1);
 520 #ifdef CONFIG_E500
 521         /* round down to next 64 kB limit so that IVPR stays aligned */
 522         gd->relocaddr &= ~(65536 - 1);
 523 #endif
 524
 525         debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10,
 526               gd->relocaddr);
 527
 528         gd->start_addr_sp = gd->relocaddr;
 529
 530         return 0;
 531 }
 532
 533 #ifndef CONFIG_SPL_BUILD
 534 /* reserve memory for malloc() area */
 535 static int reserve_malloc(void)
 536 {
 537         gd->start_addr_sp = gd->start_addr_sp - TOTAL_MALLOC_LEN;
 538         debug("Reserving %dk for malloc() at: %08lx\n",
 539                         TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp);
 540         return 0;
 541 }
 542
 543 /* (permanently) allocate a Board Info struct */
 544 static int reserve_board(void)
 545 {
 546         gd->start_addr_sp -= sizeof(bd_t);
 547         gd->bd = (bd_t *)map_sysmem(gd->start_addr_sp, sizeof(bd_t));
 548         memset(gd->bd, '\0', sizeof(bd_t));
 549         debug("Reserving %zu Bytes for Board Info at: %08lx\n",
 550                         sizeof(bd_t), gd->start_addr_sp);
 551         return 0;
 552 }
 553 #endif
 554
 555 static int setup_machine(void)
 556 {
 557 #ifdef CONFIG_MACH_TYPE
 558         gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
 559 #endif
 560         return 0;
 561 }
 562
 563 static int reserve_global_data(void)
 564 {
 565         gd->start_addr_sp -= sizeof(gd_t);
 566         gd->new_gd = (gd_t *)map_sysmem(gd->start_addr_sp, sizeof(gd_t));
 567         debug("Reserving %zu Bytes for Global Data at: %08lx\n",
 568                         sizeof(gd_t), gd->start_addr_sp);
 569         return 0;
 570 }
 571
 572 static int reserve_fdt(void)
 573 {
 574         /*
 575          * If the device tree is sitting immediate above our image then we
 576          * must relocate it. If it is embedded in the data section, then it
 577          * will be relocated with other data.
 578          */
 579         if (gd->fdt_blob) {
 580                 gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
 581
 582                 gd->start_addr_sp -= gd->fdt_size;
 583                 gd->new_fdt = map_sysmem(gd->start_addr_sp, gd->fdt_size);
 584                 debug("Reserving %lu Bytes for FDT at: %08lx\n",
 585                       gd->fdt_size, gd->start_addr_sp);
 586         }
 587
 588         return 0;
 589 }
 590
 591 static int reserve_stacks(void)
 592 {
 593 #ifdef CONFIG_SPL_BUILD
 594 # ifdef CONFIG_ARM
 595         gd->start_addr_sp -= 128;       /* leave 32 words for abort-stack */
 596         gd->irq_sp = gd->start_addr_sp;
 597 # endif
 598 #else
 599 # ifdef CONFIG_PPC
 600         ulong *s;
 601 # endif
 602
 603         /* setup stack pointer for exceptions */
 604         gd->start_addr_sp -= 16;
 605         gd->start_addr_sp &= ~0xf;
 606         gd->irq_sp = gd->start_addr_sp;
 607
 608         /*
 609          * Handle architecture-specific things here
 610          * TODO(sjg@chromium.org): Perhaps create arch_reserve_stack()
 611          * to handle this and put in arch/xxx/lib/stack.c
 612          */
 613 # ifdef CONFIG_ARM
 614 #  ifdef CONFIG_USE_IRQ
 615         gd->start_addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ);
 616         debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
 617                 CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ, gd->start_addr_sp);
 618
 619         /* 8-byte alignment for ARM ABI compliance */
 620         gd->start_addr_sp &= ~0x07;
 621 #  endif
 622         /* leave 3 words for abort-stack, plus 1 for alignment */
 623         gd->start_addr_sp -= 16;
 624 # elif defined(CONFIG_PPC)
 625         /* Clear initial stack frame */
 626         s = (ulong *) gd->start_addr_sp;
 627         *s = 0; /* Terminate back chain */
 628         *++s = 0; /* NULL return address */
 629 # endif /* Architecture specific code */
 630
 631         return 0;
 632 #endif
 633 }
 634
 635 static int display_new_sp(void)
 636 {
 637         debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp);
 638
 639         return 0;
 640 }
 641
 642 #ifdef CONFIG_PPC
 643 static int setup_board_part1(void)
 644 {
 645         bd_t *bd = gd->bd;
 646
 647         /*
 648          * Save local variables to board info struct
 649          */
 650
 651         bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;        /* start of memory */
 652         bd->bi_memsize = gd->ram_size;                  /* size in bytes */
 653
 654 #ifdef CONFIG_SYS_SRAM_BASE
 655         bd->bi_sramstart = CONFIG_SYS_SRAM_BASE;        /* start of SRAM */
 656         bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE;         /* size  of SRAM */
 657 #endif
 658
 659 #if defined(CONFIG_8xx) || defined(CONFIG_8260) || defined(CONFIG_5xx) || \
 660                 defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
 661         bd->bi_immr_base = CONFIG_SYS_IMMR;     /* base  of IMMR register     */
 662 #endif
 663 #if defined(CONFIG_MPC5xxx)
 664         bd->bi_mbar_base = CONFIG_SYS_MBAR;     /* base of internal registers */
 665 #endif
 666 #if defined(CONFIG_MPC83xx)
 667         bd->bi_immrbar = CONFIG_SYS_IMMR;
 668 #endif
 669
 670         return 0;
 671 }
 672
 673 static int setup_board_part2(void)
 674 {
 675         bd_t *bd = gd->bd;
 676
 677         bd->bi_intfreq = gd->cpu_clk;   /* Internal Freq, in Hz */
 678         bd->bi_busfreq = gd->bus_clk;   /* Bus Freq,      in Hz */
 679 #if defined(CONFIG_CPM2)
 680         bd->bi_cpmfreq = gd->arch.cpm_clk;
 681         bd->bi_brgfreq = gd->arch.brg_clk;
 682         bd->bi_sccfreq = gd->arch.scc_clk;
 683         bd->bi_vco = gd->arch.vco_out;
 684 #endif /* CONFIG_CPM2 */
 685 #if defined(CONFIG_MPC512X)
 686         bd->bi_ipsfreq = gd->arch.ips_clk;
 687 #endif /* CONFIG_MPC512X */
 688 #if defined(CONFIG_MPC5xxx)
 689         bd->bi_ipbfreq = gd->arch.ipb_clk;
 690         bd->bi_pcifreq = gd->pci_clk;
 691 #endif /* CONFIG_MPC5xxx */
 692
 693         return 0;
 694 }
 695 #endif
 696
 697 #ifdef CONFIG_SYS_EXTBDINFO
 698 static int setup_board_extra(void)
 699 {
 700         bd_t *bd = gd->bd;
 701
 702         strncpy((char *) bd->bi_s_version, "1.2", sizeof(bd->bi_s_version));
 703         strncpy((char *) bd->bi_r_version, U_BOOT_VERSION,
 704                 sizeof(bd->bi_r_version));
 705
 706         bd->bi_procfreq = gd->cpu_clk;  /* Processor Speed, In Hz */
 707         bd->bi_plb_busfreq = gd->bus_clk;
 708 #if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \
 709                 defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
 710                 defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
 711         bd->bi_pci_busfreq = get_PCI_freq();
 712         bd->bi_opbfreq = get_OPB_freq();
 713 #elif defined(CONFIG_XILINX_405)
 714         bd->bi_pci_busfreq = get_PCI_freq();
 715 #endif
 716
 717         return 0;
 718 }
 719 #endif
 720
 721 #ifdef CONFIG_POST
 722 static int init_post(void)
 723 {
 724         post_bootmode_init();
 725         post_run(NULL, POST_ROM | post_bootmode_get(0));
 726
 727         return 0;
 728 }
 729 #endif
 730
 731 static int setup_baud_rate(void)
 732 {
 733         /* Ick, can we get rid of this line? */
 734         gd->bd->bi_baudrate = gd->baudrate;
 735
 736         return 0;
 737 }
 738
 739 static int setup_dram_config(void)
 740 {
 741         /* Ram is board specific, so move it to board code ... */
 742         dram_init_banksize();
 743
 744         return 0;
 745 }
 746
 747 static int reloc_fdt(void)
 748 {
 749         if (gd->new_fdt) {
 750                 memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size);
 751                 gd->fdt_blob = gd->new_fdt;
 752         }
 753
 754         return 0;
 755 }
 756
 757 static int setup_reloc(void)
 758 {
 759         gd->reloc_off = gd->relocaddr - CONFIG_SYS_TEXT_BASE;
 760         memcpy(gd->new_gd, (char *)gd, sizeof(gd_t));
 761
 762         debug("Relocation Offset is: %08lx\n", gd->reloc_off);
 763         debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n",
 764               gd->relocaddr, (ulong)map_to_sysmem(gd->new_gd),
 765               gd->start_addr_sp);
 766
 767         return 0;
 768 }
 769
 770 /* ARM calls relocate_code from its crt0.S */
 771 #if !defined(CONFIG_ARM)
 772
 773 static int jump_to_copy(void)
 774 {
 775         /*
 776          * x86 is special, but in a nice way. It uses a trampoline which
 777          * enables the dcache if possible.
 778          *
 779          * For now, other archs use relocate_code(), which is implemented
 780          * similarly for all archs. When we do generic relocation, hopefully
 781          * we can make all archs enable the dcache prior to relocation.
 782          */
 783 #ifdef CONFIG_X86
 784         /*
 785          * SDRAM and console are now initialised. The final stack can now
 786          * be setup in SDRAM. Code execution will continue in Flash, but
 787          * with the stack in SDRAM and Global Data in temporary memory
 788          * (CPU cache)
 789          */
 790         board_init_f_r_trampoline(gd->start_addr_sp);
 791 #elif defined(CONFIG_SANDBOX)
 792         board_init_r(gd->new_gd, 0);
 793 #else
 794         relocate_code(gd->start_addr_sp, gd->new_gd, gd->relocaddr);
 795 #endif
 796
 797         return 0;
 798 }
 799 #endif
 800
 801 /* Record the board_init_f() bootstage (after arch_cpu_init()) */
 802 static int mark_bootstage(void)
 803 {
 804         bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
 805
 806         return 0;
 807 }
 808
 809 static init_fnc_t init_sequence_f[] = {
 810 #if !defined(CONFIG_CPM2) && !defined(CONFIG_MPC512X) && \
 811                 !defined(CONFIG_MPC83xx) && !defined(CONFIG_MPC85xx) && \
 812                 !defined(CONFIG_MPC86xx) && !defined(CONFIG_X86)
 813         zero_global_data,
 814 #endif
 815 #ifdef CONFIG_SANDBOX
 816         setup_ram_buf,
 817 #endif
 818         setup_mon_len,
 819         setup_fdt,
 820         trace_early_init,
 821 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
 822         /* TODO: can this go into arch_cpu_init()? */
 823         probecpu,
 824 #endif
 825         arch_cpu_init,          /* basic arch cpu dependent setup */
 826 #ifdef CONFIG_X86
 827         cpu_init_f,             /* TODO(sjg@chromium.org): remove */
 828 # ifdef CONFIG_OF_CONTROL
 829         find_fdt,               /* TODO(sjg@chromium.org): remove */
 830 # endif
 831 #endif
 832         mark_bootstage,
 833 #ifdef CONFIG_OF_CONTROL
 834         fdtdec_check_fdt,
 835 #endif
 836 #if defined(CONFIG_BOARD_EARLY_INIT_F)
 837         board_early_init_f,
 838 #endif
 839         /* TODO: can any of this go into arch_cpu_init()? */
 840 #if defined(CONFIG_PPC) && !defined(CONFIG_8xx_CPUCLK_DEFAULT)
 841         get_clocks,             /* get CPU and bus clocks (etc.) */
 842 #if defined(CONFIG_TQM8xxL) && !defined(CONFIG_TQM866M) \
 843                 && !defined(CONFIG_TQM885D)
 844         adjust_sdram_tbs_8xx,
 845 #endif
 846         /* TODO: can we rename this to timer_init()? */
 847         init_timebase,
 848 #endif
 849 #ifdef CONFIG_ARM
 850         timer_init,             /* initialize timer */
 851 #endif
 852 #ifdef CONFIG_SYS_ALLOC_DPRAM
 853 #if !defined(CONFIG_CPM2)
 854         dpram_init,
 855 #endif
 856 #endif
 857 #if defined(CONFIG_BOARD_POSTCLK_INIT)
 858         board_postclk_init,
 859 #endif
 860 #ifdef CONFIG_FSL_ESDHC
 861         get_clocks,
 862 #endif
 863         env_init,               /* initialize environment */
 864 #if defined(CONFIG_8xx_CPUCLK_DEFAULT)
 865         /* get CPU and bus clocks according to the environment variable */
 866         get_clocks_866,
 867         /* adjust sdram refresh rate according to the new clock */
 868         sdram_adjust_866,
 869         init_timebase,
 870 #endif
 871         init_baud_rate,         /* initialze baudrate settings */
 872         serial_init,            /* serial communications setup */
 873         console_init_f,         /* stage 1 init of console */
 874 #ifdef CONFIG_SANDBOX
 875         sandbox_early_getopt_check,
 876 #endif
 877 #ifdef CONFIG_OF_CONTROL
 878         fdtdec_prepare_fdt,
 879 #endif
 880         display_options,        /* say that we are here */
 881         display_text_info,      /* show debugging info if required */
 882 #if defined(CONFIG_8260)
 883         prt_8260_rsr,
 884         prt_8260_clks,
 885 #endif /* CONFIG_8260 */
 886 #if defined(CONFIG_MPC83xx)
 887         prt_83xx_rsr,
 888 #endif
 889 #ifdef CONFIG_PPC
 890         checkcpu,
 891 #endif
 892 #if defined(CONFIG_DISPLAY_CPUINFO)
 893         print_cpuinfo,          /* display cpu info (and speed) */
 894 #endif
 895 #if defined(CONFIG_MPC5xxx)
 896         prt_mpc5xxx_clks,
 897 #endif /* CONFIG_MPC5xxx */
 898 #if defined(CONFIG_DISPLAY_BOARDINFO)
 899         checkboard,             /* display board info */
 900 #endif
 901         INIT_FUNC_WATCHDOG_INIT
 902 #if defined(CONFIG_MISC_INIT_F)
 903         misc_init_f,
 904 #endif
 905         INIT_FUNC_WATCHDOG_RESET
 906 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 907         init_func_i2c,
 908 #endif
 909 #if defined(CONFIG_HARD_SPI)
 910         init_func_spi,
 911 #endif
 912 #ifdef CONFIG_X86
 913         dram_init_f,            /* configure available RAM banks */
 914         calculate_relocation_address,
 915 #endif
 916         announce_dram_init,
 917         /* TODO: unify all these dram functions? */
 918 #ifdef CONFIG_ARM
 919         dram_init,              /* configure available RAM banks */
 920 #endif
 921 #ifdef CONFIG_PPC
 922         init_func_ram,
 923 #endif
 924 #ifdef CONFIG_POST
 925         post_init_f,
 926 #endif
 927         INIT_FUNC_WATCHDOG_RESET
 928 #if defined(CONFIG_SYS_DRAM_TEST)
 929         testdram,
 930 #endif /* CONFIG_SYS_DRAM_TEST */
 931         INIT_FUNC_WATCHDOG_RESET
 932
 933 #ifdef CONFIG_POST
 934         init_post,
 935 #endif
 936         INIT_FUNC_WATCHDOG_RESET
 937         /*
 938          * Now that we have DRAM mapped and working, we can
 939          * relocate the code and continue running from DRAM.
 940          *
 941          * Reserve memory at end of RAM for (top down in that order):
 942          *  - area that won't get touched by U-Boot and Linux (optional)
 943          *  - kernel log buffer
 944          *  - protected RAM
 945          *  - LCD framebuffer
 946          *  - monitor code
 947          *  - board info struct
 948          */
 949         setup_dest_addr,
 950 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
 951         reserve_logbuffer,
 952 #endif
 953 #ifdef CONFIG_PRAM
 954         reserve_pram,
 955 #endif
 956         reserve_round_4k,
 957 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \
 958                 defined(CONFIG_ARM)
 959         reserve_mmu,
 960 #endif
 961 #ifdef CONFIG_LCD
 962         reserve_lcd,
 963 #endif
 964         reserve_trace,
 965         /* TODO: Why the dependency on CONFIG_8xx? */
 966 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \
 967                 && !defined(CONFIG_ARM) && !defined(CONFIG_X86)
 968         reserve_video,
 969 #endif
 970         reserve_uboot,
 971 #ifndef CONFIG_SPL_BUILD
 972         reserve_malloc,
 973         reserve_board,
 974 #endif
 975         setup_machine,
 976         reserve_global_data,
 977         reserve_fdt,
 978         reserve_stacks,
 979         setup_dram_config,
 980         show_dram_config,
 981 #ifdef CONFIG_PPC
 982         setup_board_part1,
 983         INIT_FUNC_WATCHDOG_RESET
 984         setup_board_part2,
 985 #endif
 986         setup_baud_rate,
 987         display_new_sp,
 988 #ifdef CONFIG_SYS_EXTBDINFO
 989         setup_board_extra,
 990 #endif
 991         INIT_FUNC_WATCHDOG_RESET
 992         reloc_fdt,
 993         setup_reloc,
 994 #ifndef CONFIG_ARM
 995         jump_to_copy,
 996 #endif
 997         NULL,
 998 };
 999
1000 void board_init_f(ulong boot_flags)
1001 {
1002 #ifndef CONFIG_X86
1003         gd_t data;
1004
1005         gd = &data;
1006 #endif
1007
1008         gd->flags = boot_flags;
1009
1010         if (initcall_run_list(init_sequence_f))
1011                 hang();
1012
1013 #ifndef CONFIG_ARM
1014         /* NOTREACHED - jump_to_copy() does not return */
1015         hang();
1016 #endif
1017 }
1018
1019 #ifdef CONFIG_X86
1020 /*
1021  * For now this code is only used on x86.
1022  *
1023  * init_sequence_f_r is the list of init functions which are run when
1024  * U-Boot is executing from Flash with a semi-limited 'C' environment.
1025  * The following limitations must be considered when implementing an
1026  * '_f_r' function:
1027  *  - 'static' variables are read-only
1028  *  - Global Data (gd->xxx) is read/write
1029  *
1030  * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if
1031  * supported).  It _should_, if possible, copy global data to RAM and
1032  * initialise the CPU caches (to speed up the relocation process)
1033  *
1034  * NOTE: At present only x86 uses this route, but it is intended that
1035  * all archs will move to this when generic relocation is implemented.
1036  */
1037 static init_fnc_t init_sequence_f_r[] = {
1038         init_cache_f_r,
1039         copy_uboot_to_ram,
1040         clear_bss,
1041         do_elf_reloc_fixups,
1042
1043         NULL,
1044 };
1045
1046 void board_init_f_r(void)
1047 {
1048         if (initcall_run_list(init_sequence_f_r))
1049                 hang();
1050
1051         /*
1052          * U-Boot has been copied into SDRAM, the BSS has been cleared etc.
1053          * Transfer execution from Flash to RAM by calculating the address
1054          * of the in-RAM copy of board_init_r() and calling it
1055          */
1056         (board_init_r + gd->reloc_off)(gd, gd->relocaddr);
1057
1058         /* NOTREACHED - board_init_r() does not return */
1059         hang();
1060 }
1061 #endif /* CONFIG_X86 */