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 <dm.h>
  18 #include <fdtdec.h>
  19 #include <fs.h>
  20 #if defined(CONFIG_CMD_IDE)
  21 #include <ide.h>
  22 #endif
  23 #include <i2c.h>
  24 #include <initcall.h>
  25 #include <logbuff.h>
  26 #include <malloc.h>
  27 #include <mapmem.h>
  28
  29 /* TODO: Can we move these into arch/ headers? */
  30 #ifdef CONFIG_8xx
  31 #include <mpc8xx.h>
  32 #endif
  33 #ifdef CONFIG_5xx
  34 #include <mpc5xx.h>
  35 #endif
  36 #ifdef CONFIG_MPC5xxx
  37 #include <mpc5xxx.h>
  38 #endif
  39 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
  40 #include <asm/mp.h>
  41 #endif
  42
  43 #include <os.h>
  44 #include <post.h>
  45 #include <spi.h>
  46 #include <status_led.h>
  47 #include <trace.h>
  48 #include <watchdog.h>
  49 #include <asm/errno.h>
  50 #include <asm/io.h>
  51 #include <asm/sections.h>
  52 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
  53 #include <asm/init_helpers.h>
  54 #include <asm/relocate.h>
  55 #endif
  56 #ifdef CONFIG_SANDBOX
  57 #include <asm/state.h>
  58 #endif
  59 #include <dm/root.h>
  60 #include <linux/compiler.h>
  61
  62 /*
  63  * Pointer to initial global data area
  64  *
  65  * Here we initialize it if needed.
  66  */
  67 #ifdef XTRN_DECLARE_GLOBAL_DATA_PTR
  68 #undef  XTRN_DECLARE_GLOBAL_DATA_PTR
  69 #define XTRN_DECLARE_GLOBAL_DATA_PTR    /* empty = allocate here */
  70 DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CONFIG_SYS_INIT_GD_ADDR);
  71 #else
  72 DECLARE_GLOBAL_DATA_PTR;
  73 #endif
  74
  75 /*
  76  * TODO(sjg@chromium.org): IMO this code should be
  77  * refactored to a single function, something like:
  78  *
  79  * void led_set_state(enum led_colour_t colour, int on);
  80  */
  81 /************************************************************************
  82  * Coloured LED functionality
  83  ************************************************************************
  84  * May be supplied by boards if desired
  85  */
  86 __weak void coloured_LED_init(void) {}
  87 __weak void red_led_on(void) {}
  88 __weak void red_led_off(void) {}
  89 __weak void green_led_on(void) {}
  90 __weak void green_led_off(void) {}
  91 __weak void yellow_led_on(void) {}
  92 __weak void yellow_led_off(void) {}
  93 __weak void blue_led_on(void) {}
  94 __weak void blue_led_off(void) {}
  95
  96 /*
  97  * Why is gd allocated a register? Prior to reloc it might be better to
  98  * just pass it around to each function in this file?
  99  *
 100  * After reloc one could argue that it is hardly used and doesn't need
 101  * to be in a register. Or if it is it should perhaps hold pointers to all
 102  * global data for all modules, so that post-reloc we can avoid the massive
 103  * literal pool we get on ARM. Or perhaps just encourage each module to use
 104  * a structure...
 105  */
 106
 107 /*
 108  * Could the CONFIG_SPL_BUILD infection become a flag in gd?
 109  */
 110
 111 #if defined(CONFIG_WATCHDOG) || defined(CONFIG_HW_WATCHDOG)
 112 static int init_func_watchdog_init(void)
 113 {
 114 # if defined(CONFIG_HW_WATCHDOG) && (defined(CONFIG_BLACKFIN) || \
 115         defined(CONFIG_M68K) || defined(CONFIG_MICROBLAZE) || \
 116         defined(CONFIG_SH) || defined(CONFIG_AT91SAM9_WATCHDOG) || \
 117         defined(CONFIG_IMX_WATCHDOG))
 118         hw_watchdog_init();
 119 # endif
 120         puts("       Watchdog enabled\n");
 121         WATCHDOG_RESET();
 122
 123         return 0;
 124 }
 125
 126 int init_func_watchdog_reset(void)
 127 {
 128         WATCHDOG_RESET();
 129
 130         return 0;
 131 }
 132 #endif /* CONFIG_WATCHDOG */
 133
 134 __weak void board_add_ram_info(int use_default)
 135 {
 136         /* please define platform specific board_add_ram_info() */
 137 }
 138
 139 static int init_baud_rate(void)
 140 {
 141         gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
 142         return 0;
 143 }
 144
 145 static int display_text_info(void)
 146 {
 147 #ifndef CONFIG_SANDBOX
 148         ulong bss_start, bss_end, text_base;
 149
 150         bss_start = (ulong)&__bss_start;
 151         bss_end = (ulong)&__bss_end;
 152
 153 #ifdef CONFIG_SYS_TEXT_BASE
 154         text_base = CONFIG_SYS_TEXT_BASE;
 155 #else
 156         text_base = CONFIG_SYS_MONITOR_BASE;
 157 #endif
 158
 159         debug("U-Boot code: %08lX -> %08lX  BSS: -> %08lX\n",
 160                 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 #if defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_M68K)
 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         unsigned long long 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 __weak void dram_init_banksize(void)
 227 {
 228 #if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE)
 229         gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
 230         gd->bd->bi_dram[0].size = get_effective_memsize();
 231 #endif
 232 }
 233
 234 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
 235 static int init_func_i2c(void)
 236 {
 237         puts("I2C:   ");
 238 #ifdef CONFIG_SYS_I2C
 239         i2c_init_all();
 240 #else
 241         i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
 242 #endif
 243         puts("ready\n");
 244         return 0;
 245 }
 246 #endif
 247
 248 #if defined(CONFIG_HARD_SPI)
 249 static int init_func_spi(void)
 250 {
 251         puts("SPI:   ");
 252         spi_init();
 253         puts("ready\n");
 254         return 0;
 255 }
 256 #endif
 257
 258 __maybe_unused
 259 static int zero_global_data(void)
 260 {
 261         memset((void *)gd, '\0', sizeof(gd_t));
 262
 263         return 0;
 264 }
 265
 266 static int setup_mon_len(void)
 267 {
 268 #if defined(__ARM__) || defined(__MICROBLAZE__)
 269         gd->mon_len = (ulong)&__bss_end - (ulong)_start;
 270 #elif defined(CONFIG_SANDBOX)
 271         gd->mon_len = (ulong)&_end - (ulong)_init;
 272 #elif defined(CONFIG_BLACKFIN) || defined(CONFIG_NIOS2)
 273         gd->mon_len = CONFIG_SYS_MONITOR_LEN;
 274 #else
 275         /* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */
 276         gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE;
 277 #endif
 278         return 0;
 279 }
 280
 281 __weak int arch_cpu_init(void)
 282 {
 283         return 0;
 284 }
 285
 286 #ifdef CONFIG_SANDBOX
 287 static int setup_ram_buf(void)
 288 {
 289         struct sandbox_state *state = state_get_current();
 290
 291         gd->arch.ram_buf = state->ram_buf;
 292         gd->ram_size = state->ram_size;
 293
 294         return 0;
 295 }
 296 #endif
 297
 298 /* Get the top of usable RAM */
 299 __weak ulong board_get_usable_ram_top(ulong total_size)
 300 {
 301 #ifdef CONFIG_SYS_SDRAM_BASE
 302         /*
 303          * Detect whether we have so much RAM that it goes past the end of our
 304          * 32-bit address space. If so, clip the usable RAM so it doesn't.
 305          */
 306         if (gd->ram_top < CONFIG_SYS_SDRAM_BASE)
 307                 /*
 308                  * Will wrap back to top of 32-bit space when reservations
 309                  * are made.
 310                  */
 311                 return 0;
 312 #endif
 313         return gd->ram_top;
 314 }
 315
 316 static int setup_dest_addr(void)
 317 {
 318         debug("Monitor len: %08lX\n", gd->mon_len);
 319         /*
 320          * Ram is setup, size stored in gd !!
 321          */
 322         debug("Ram size: %08lX\n", (ulong)gd->ram_size);
 323 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
 324         /*
 325          * Subtract specified amount of memory to hide so that it won't
 326          * get "touched" at all by U-Boot. By fixing up gd->ram_size
 327          * the Linux kernel should now get passed the now "corrected"
 328          * memory size and won't touch it either. This should work
 329          * for arch/ppc and arch/powerpc. Only Linux board ports in
 330          * arch/powerpc with bootwrapper support, that recalculate the
 331          * memory size from the SDRAM controller setup will have to
 332          * get fixed.
 333          */
 334         gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
 335 #endif
 336 #ifdef CONFIG_SYS_SDRAM_BASE
 337         gd->ram_top = CONFIG_SYS_SDRAM_BASE;
 338 #endif
 339         gd->ram_top += get_effective_memsize();
 340         gd->ram_top = board_get_usable_ram_top(gd->mon_len);
 341         gd->relocaddr = gd->ram_top;
 342         debug("Ram top: %08lX\n", (ulong)gd->ram_top);
 343 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
 344         /*
 345          * We need to make sure the location we intend to put secondary core
 346          * boot code is reserved and not used by any part of u-boot
 347          */
 348         if (gd->relocaddr > determine_mp_bootpg(NULL)) {
 349                 gd->relocaddr = determine_mp_bootpg(NULL);
 350                 debug("Reserving MP boot page to %08lx\n", gd->relocaddr);
 351         }
 352 #endif
 353         return 0;
 354 }
 355
 356 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
 357 static int reserve_logbuffer(void)
 358 {
 359         /* reserve kernel log buffer */
 360         gd->relocaddr -= LOGBUFF_RESERVE;
 361         debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
 362                 gd->relocaddr);
 363         return 0;
 364 }
 365 #endif
 366
 367 #ifdef CONFIG_PRAM
 368 /* reserve protected RAM */
 369 static int reserve_pram(void)
 370 {
 371         ulong reg;
 372
 373         reg = getenv_ulong("pram", 10, CONFIG_PRAM);
 374         gd->relocaddr -= (reg << 10);           /* size is in kB */
 375         debug("Reserving %ldk for protected RAM at %08lx\n", reg,
 376               gd->relocaddr);
 377         return 0;
 378 }
 379 #endif /* CONFIG_PRAM */
 380
 381 /* Round memory pointer down to next 4 kB limit */
 382 static int reserve_round_4k(void)
 383 {
 384         gd->relocaddr &= ~(4096 - 1);
 385         return 0;
 386 }
 387
 388 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \
 389                 defined(CONFIG_ARM)
 390 static int reserve_mmu(void)
 391 {
 392         /* reserve TLB table */
 393         gd->arch.tlb_size = PGTABLE_SIZE;
 394         gd->relocaddr -= gd->arch.tlb_size;
 395
 396         /* round down to next 64 kB limit */
 397         gd->relocaddr &= ~(0x10000 - 1);
 398
 399         gd->arch.tlb_addr = gd->relocaddr;
 400         debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr,
 401               gd->arch.tlb_addr + gd->arch.tlb_size);
 402         return 0;
 403 }
 404 #endif
 405
 406 #ifdef CONFIG_LCD
 407 static int reserve_lcd(void)
 408 {
 409 #ifdef CONFIG_FB_ADDR
 410         gd->fb_base = CONFIG_FB_ADDR;
 411 #else
 412         /* reserve memory for LCD display (always full pages) */
 413         gd->relocaddr = lcd_setmem(gd->relocaddr);
 414         gd->fb_base = gd->relocaddr;
 415 #endif /* CONFIG_FB_ADDR */
 416         return 0;
 417 }
 418 #endif /* CONFIG_LCD */
 419
 420 static int reserve_trace(void)
 421 {
 422 #ifdef CONFIG_TRACE
 423         gd->relocaddr -= CONFIG_TRACE_BUFFER_SIZE;
 424         gd->trace_buff = map_sysmem(gd->relocaddr, CONFIG_TRACE_BUFFER_SIZE);
 425         debug("Reserving %dk for trace data at: %08lx\n",
 426               CONFIG_TRACE_BUFFER_SIZE >> 10, gd->relocaddr);
 427 #endif
 428
 429         return 0;
 430 }
 431
 432 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) && \
 433                 !defined(CONFIG_ARM) && !defined(CONFIG_X86) && \
 434                 !defined(CONFIG_BLACKFIN) && !defined(CONFIG_M68K)
 435 static int reserve_video(void)
 436 {
 437         /* reserve memory for video display (always full pages) */
 438         gd->relocaddr = video_setmem(gd->relocaddr);
 439         gd->fb_base = gd->relocaddr;
 440
 441         return 0;
 442 }
 443 #endif
 444
 445 static int reserve_uboot(void)
 446 {
 447         /*
 448          * reserve memory for U-Boot code, data & bss
 449          * round down to next 4 kB limit
 450          */
 451         gd->relocaddr -= gd->mon_len;
 452         gd->relocaddr &= ~(4096 - 1);
 453 #ifdef CONFIG_E500
 454         /* round down to next 64 kB limit so that IVPR stays aligned */
 455         gd->relocaddr &= ~(65536 - 1);
 456 #endif
 457
 458         debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10,
 459               gd->relocaddr);
 460
 461         gd->start_addr_sp = gd->relocaddr;
 462
 463         return 0;
 464 }
 465
 466 #ifndef CONFIG_SPL_BUILD
 467 /* reserve memory for malloc() area */
 468 static int reserve_malloc(void)
 469 {
 470         gd->start_addr_sp = gd->start_addr_sp - TOTAL_MALLOC_LEN;
 471         debug("Reserving %dk for malloc() at: %08lx\n",
 472                         TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp);
 473         return 0;
 474 }
 475
 476 /* (permanently) allocate a Board Info struct */
 477 static int reserve_board(void)
 478 {
 479         if (!gd->bd) {
 480                 gd->start_addr_sp -= sizeof(bd_t);
 481                 gd->bd = (bd_t *)map_sysmem(gd->start_addr_sp, sizeof(bd_t));
 482                 memset(gd->bd, '\0', sizeof(bd_t));
 483                 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
 484                       sizeof(bd_t), gd->start_addr_sp);
 485         }
 486         return 0;
 487 }
 488 #endif
 489
 490 static int setup_machine(void)
 491 {
 492 #ifdef CONFIG_MACH_TYPE
 493         gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
 494 #endif
 495         return 0;
 496 }
 497
 498 static int reserve_global_data(void)
 499 {
 500         gd->start_addr_sp -= sizeof(gd_t);
 501         gd->new_gd = (gd_t *)map_sysmem(gd->start_addr_sp, sizeof(gd_t));
 502         debug("Reserving %zu Bytes for Global Data at: %08lx\n",
 503                         sizeof(gd_t), gd->start_addr_sp);
 504         return 0;
 505 }
 506
 507 static int reserve_fdt(void)
 508 {
 509         /*
 510          * If the device tree is sitting immediately above our image then we
 511          * must relocate it. If it is embedded in the data section, then it
 512          * will be relocated with other data.
 513          */
 514         if (gd->fdt_blob) {
 515                 gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
 516
 517                 gd->start_addr_sp -= gd->fdt_size;
 518                 gd->new_fdt = map_sysmem(gd->start_addr_sp, gd->fdt_size);
 519                 debug("Reserving %lu Bytes for FDT at: %08lx\n",
 520                       gd->fdt_size, gd->start_addr_sp);
 521         }
 522
 523         return 0;
 524 }
 525
 526 int arch_reserve_stacks(void)
 527 {
 528         return 0;
 529 }
 530
 531 static int reserve_stacks(void)
 532 {
 533         /* make stack pointer 16-byte aligned */
 534         gd->start_addr_sp -= 16;
 535         gd->start_addr_sp &= ~0xf;
 536
 537         /*
 538          * let the architecture-specific code tailor gd->start_addr_sp and
 539          * gd->irq_sp
 540          */
 541         return arch_reserve_stacks();
 542 }
 543
 544 static int display_new_sp(void)
 545 {
 546         debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp);
 547
 548         return 0;
 549 }
 550
 551 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
 552 static int setup_board_part1(void)
 553 {
 554         bd_t *bd = gd->bd;
 555
 556         /*
 557          * Save local variables to board info struct
 558          */
 559         bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;        /* start of memory */
 560         bd->bi_memsize = gd->ram_size;                  /* size in bytes */
 561
 562 #ifdef CONFIG_SYS_SRAM_BASE
 563         bd->bi_sramstart = CONFIG_SYS_SRAM_BASE;        /* start of SRAM */
 564         bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE;         /* size  of SRAM */
 565 #endif
 566
 567 #if defined(CONFIG_8xx) || defined(CONFIG_MPC8260) || defined(CONFIG_5xx) || \
 568                 defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
 569         bd->bi_immr_base = CONFIG_SYS_IMMR;     /* base  of IMMR register     */
 570 #endif
 571 #if defined(CONFIG_MPC5xxx) || defined(CONFIG_M68K)
 572         bd->bi_mbar_base = CONFIG_SYS_MBAR;     /* base of internal registers */
 573 #endif
 574 #if defined(CONFIG_MPC83xx)
 575         bd->bi_immrbar = CONFIG_SYS_IMMR;
 576 #endif
 577
 578         return 0;
 579 }
 580
 581 static int setup_board_part2(void)
 582 {
 583         bd_t *bd = gd->bd;
 584
 585         bd->bi_intfreq = gd->cpu_clk;   /* Internal Freq, in Hz */
 586         bd->bi_busfreq = gd->bus_clk;   /* Bus Freq,      in Hz */
 587 #if defined(CONFIG_CPM2)
 588         bd->bi_cpmfreq = gd->arch.cpm_clk;
 589         bd->bi_brgfreq = gd->arch.brg_clk;
 590         bd->bi_sccfreq = gd->arch.scc_clk;
 591         bd->bi_vco = gd->arch.vco_out;
 592 #endif /* CONFIG_CPM2 */
 593 #if defined(CONFIG_MPC512X)
 594         bd->bi_ipsfreq = gd->arch.ips_clk;
 595 #endif /* CONFIG_MPC512X */
 596 #if defined(CONFIG_MPC5xxx)
 597         bd->bi_ipbfreq = gd->arch.ipb_clk;
 598         bd->bi_pcifreq = gd->pci_clk;
 599 #endif /* CONFIG_MPC5xxx */
 600 #if defined(CONFIG_M68K) && defined(CONFIG_PCI)
 601         bd->bi_pcifreq = gd->pci_clk;
 602 #endif
 603 #if defined(CONFIG_EXTRA_CLOCK)
 604         bd->bi_inpfreq = gd->arch.inp_clk;      /* input Freq in Hz */
 605         bd->bi_vcofreq = gd->arch.vco_clk;      /* vco Freq in Hz */
 606         bd->bi_flbfreq = gd->arch.flb_clk;      /* flexbus Freq in Hz */
 607 #endif
 608
 609         return 0;
 610 }
 611 #endif
 612
 613 #ifdef CONFIG_SYS_EXTBDINFO
 614 static int setup_board_extra(void)
 615 {
 616         bd_t *bd = gd->bd;
 617
 618         strncpy((char *) bd->bi_s_version, "1.2", sizeof(bd->bi_s_version));
 619         strncpy((char *) bd->bi_r_version, U_BOOT_VERSION,
 620                 sizeof(bd->bi_r_version));
 621
 622         bd->bi_procfreq = gd->cpu_clk;  /* Processor Speed, In Hz */
 623         bd->bi_plb_busfreq = gd->bus_clk;
 624 #if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \
 625                 defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
 626                 defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
 627         bd->bi_pci_busfreq = get_PCI_freq();
 628         bd->bi_opbfreq = get_OPB_freq();
 629 #elif defined(CONFIG_XILINX_405)
 630         bd->bi_pci_busfreq = get_PCI_freq();
 631 #endif
 632
 633         return 0;
 634 }
 635 #endif
 636
 637 #ifdef CONFIG_POST
 638 static int init_post(void)
 639 {
 640         post_bootmode_init();
 641         post_run(NULL, POST_ROM | post_bootmode_get(0));
 642
 643         return 0;
 644 }
 645 #endif
 646
 647 static int setup_dram_config(void)
 648 {
 649         /* Ram is board specific, so move it to board code ... */
 650         dram_init_banksize();
 651
 652         return 0;
 653 }
 654
 655 static int reloc_fdt(void)
 656 {
 657         if (gd->new_fdt) {
 658                 memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size);
 659                 gd->fdt_blob = gd->new_fdt;
 660         }
 661
 662         return 0;
 663 }
 664
 665 static int setup_reloc(void)
 666 {
 667 #ifdef CONFIG_SYS_TEXT_BASE
 668         gd->reloc_off = gd->relocaddr - CONFIG_SYS_TEXT_BASE;
 669 #ifdef CONFIG_M68K
 670         /*
 671          * On all ColdFire arch cpu, monitor code starts always
 672          * just after the default vector table location, so at 0x400
 673          */
 674         gd->reloc_off = gd->relocaddr - (CONFIG_SYS_TEXT_BASE + 0x400);
 675 #endif
 676 #endif
 677         memcpy(gd->new_gd, (char *)gd, sizeof(gd_t));
 678
 679         debug("Relocation Offset is: %08lx\n", gd->reloc_off);
 680         debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n",
 681               gd->relocaddr, (ulong)map_to_sysmem(gd->new_gd),
 682               gd->start_addr_sp);
 683
 684         return 0;
 685 }
 686
 687 /* ARM calls relocate_code from its crt0.S */
 688 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX)
 689
 690 static int jump_to_copy(void)
 691 {
 692         /*
 693          * x86 is special, but in a nice way. It uses a trampoline which
 694          * enables the dcache if possible.
 695          *
 696          * For now, other archs use relocate_code(), which is implemented
 697          * similarly for all archs. When we do generic relocation, hopefully
 698          * we can make all archs enable the dcache prior to relocation.
 699          */
 700 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
 701         /*
 702          * SDRAM and console are now initialised. The final stack can now
 703          * be setup in SDRAM. Code execution will continue in Flash, but
 704          * with the stack in SDRAM and Global Data in temporary memory
 705          * (CPU cache)
 706          */
 707         board_init_f_r_trampoline(gd->start_addr_sp);
 708 #else
 709         relocate_code(gd->start_addr_sp, gd->new_gd, gd->relocaddr);
 710 #endif
 711
 712         return 0;
 713 }
 714 #endif
 715
 716 /* Record the board_init_f() bootstage (after arch_cpu_init()) */
 717 static int mark_bootstage(void)
 718 {
 719         bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
 720
 721         return 0;
 722 }
 723
 724 static int initf_dm(void)
 725 {
 726 #if defined(CONFIG_DM) && defined(CONFIG_SYS_MALLOC_F_LEN)
 727         int ret;
 728
 729         ret = dm_init_and_scan(true);
 730         if (ret)
 731                 return ret;
 732 #endif
 733
 734         return 0;
 735 }
 736
 737 /* Architecture-specific memory reservation */
 738 __weak int reserve_arch(void)
 739 {
 740         return 0;
 741 }
 742
 743 __weak int arch_cpu_init_dm(void)
 744 {
 745         return 0;
 746 }
 747
 748 static init_fnc_t init_sequence_f[] = {
 749 #ifdef CONFIG_SANDBOX
 750         setup_ram_buf,
 751 #endif
 752         setup_mon_len,
 753 #ifdef CONFIG_OF_CONTROL
 754         fdtdec_setup,
 755 #endif
 756 #ifdef CONFIG_TRACE
 757         trace_early_init,
 758 #endif
 759         initf_malloc,
 760 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
 761         /* TODO: can this go into arch_cpu_init()? */
 762         probecpu,
 763 #endif
 764         arch_cpu_init,          /* basic arch cpu dependent setup */
 765         mark_bootstage,
 766         initf_dm,
 767         arch_cpu_init_dm,
 768 #if defined(CONFIG_BOARD_EARLY_INIT_F)
 769         board_early_init_f,
 770 #endif
 771         /* TODO: can any of this go into arch_cpu_init()? */
 772 #if defined(CONFIG_PPC) && !defined(CONFIG_8xx_CPUCLK_DEFAULT)
 773         get_clocks,             /* get CPU and bus clocks (etc.) */
 774 #if defined(CONFIG_TQM8xxL) && !defined(CONFIG_TQM866M) \
 775                 && !defined(CONFIG_TQM885D)
 776         adjust_sdram_tbs_8xx,
 777 #endif
 778         /* TODO: can we rename this to timer_init()? */
 779         init_timebase,
 780 #endif
 781 #if defined(CONFIG_ARM) || defined(CONFIG_MIPS) || defined(CONFIG_BLACKFIN)
 782         timer_init,             /* initialize timer */
 783 #endif
 784 #ifdef CONFIG_SYS_ALLOC_DPRAM
 785 #if !defined(CONFIG_CPM2)
 786         dpram_init,
 787 #endif
 788 #endif
 789 #if defined(CONFIG_BOARD_POSTCLK_INIT)
 790         board_postclk_init,
 791 #endif
 792 #ifdef CONFIG_FSL_ESDHC
 793         get_clocks,
 794 #endif
 795 #ifdef CONFIG_M68K
 796         get_clocks,
 797 #endif
 798         env_init,               /* initialize environment */
 799 #if defined(CONFIG_8xx_CPUCLK_DEFAULT)
 800         /* get CPU and bus clocks according to the environment variable */
 801         get_clocks_866,
 802         /* adjust sdram refresh rate according to the new clock */
 803         sdram_adjust_866,
 804         init_timebase,
 805 #endif
 806         init_baud_rate,         /* initialze baudrate settings */
 807         serial_init,            /* serial communications setup */
 808         console_init_f,         /* stage 1 init of console */
 809 #ifdef CONFIG_SANDBOX
 810         sandbox_early_getopt_check,
 811 #endif
 812 #ifdef CONFIG_OF_CONTROL
 813         fdtdec_prepare_fdt,
 814 #endif
 815         display_options,        /* say that we are here */
 816         display_text_info,      /* show debugging info if required */
 817 #if defined(CONFIG_MPC8260)
 818         prt_8260_rsr,
 819         prt_8260_clks,
 820 #endif /* CONFIG_MPC8260 */
 821 #if defined(CONFIG_MPC83xx)
 822         prt_83xx_rsr,
 823 #endif
 824 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
 825         checkcpu,
 826 #endif
 827         print_cpuinfo,          /* display cpu info (and speed) */
 828 #if defined(CONFIG_MPC5xxx)
 829         prt_mpc5xxx_clks,
 830 #endif /* CONFIG_MPC5xxx */
 831 #if defined(CONFIG_DISPLAY_BOARDINFO)
 832         show_board_info,
 833 #endif
 834         INIT_FUNC_WATCHDOG_INIT
 835 #if defined(CONFIG_MISC_INIT_F)
 836         misc_init_f,
 837 #endif
 838         INIT_FUNC_WATCHDOG_RESET
 839 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
 840         init_func_i2c,
 841 #endif
 842 #if defined(CONFIG_HARD_SPI)
 843         init_func_spi,
 844 #endif
 845         announce_dram_init,
 846         /* TODO: unify all these dram functions? */
 847 #if defined(CONFIG_ARM) || defined(CONFIG_X86) || defined(CONFIG_MICROBLAZE) || defined(CONFIG_AVR32)
 848         dram_init,              /* configure available RAM banks */
 849 #endif
 850 #if defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_M68K)
 851         init_func_ram,
 852 #endif
 853 #ifdef CONFIG_POST
 854         post_init_f,
 855 #endif
 856         INIT_FUNC_WATCHDOG_RESET
 857 #if defined(CONFIG_SYS_DRAM_TEST)
 858         testdram,
 859 #endif /* CONFIG_SYS_DRAM_TEST */
 860         INIT_FUNC_WATCHDOG_RESET
 861
 862 #ifdef CONFIG_POST
 863         init_post,
 864 #endif
 865         INIT_FUNC_WATCHDOG_RESET
 866         /*
 867          * Now that we have DRAM mapped and working, we can
 868          * relocate the code and continue running from DRAM.
 869          *
 870          * Reserve memory at end of RAM for (top down in that order):
 871          *  - area that won't get touched by U-Boot and Linux (optional)
 872          *  - kernel log buffer
 873          *  - protected RAM
 874          *  - LCD framebuffer
 875          *  - monitor code
 876          *  - board info struct
 877          */
 878         setup_dest_addr,
 879 #if defined(CONFIG_BLACKFIN) || defined(CONFIG_NIOS2)
 880         /* Blackfin u-boot monitor should be on top of the ram */
 881         reserve_uboot,
 882 #endif
 883 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
 884         reserve_logbuffer,
 885 #endif
 886 #ifdef CONFIG_PRAM
 887         reserve_pram,
 888 #endif
 889         reserve_round_4k,
 890 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \
 891                 defined(CONFIG_ARM)
 892         reserve_mmu,
 893 #endif
 894 #ifdef CONFIG_LCD
 895         reserve_lcd,
 896 #endif
 897         reserve_trace,
 898         /* TODO: Why the dependency on CONFIG_8xx? */
 899 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) && \
 900                 !defined(CONFIG_ARM) && !defined(CONFIG_X86) && \
 901                 !defined(CONFIG_BLACKFIN) && !defined(CONFIG_M68K)
 902         reserve_video,
 903 #endif
 904 #if !defined(CONFIG_BLACKFIN) && !defined(CONFIG_NIOS2)
 905         reserve_uboot,
 906 #endif
 907 #ifndef CONFIG_SPL_BUILD
 908         reserve_malloc,
 909         reserve_board,
 910 #endif
 911         setup_machine,
 912         reserve_global_data,
 913         reserve_fdt,
 914         reserve_arch,
 915         reserve_stacks,
 916         setup_dram_config,
 917         show_dram_config,
 918 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
 919         setup_board_part1,
 920         INIT_FUNC_WATCHDOG_RESET
 921         setup_board_part2,
 922 #endif
 923         display_new_sp,
 924 #ifdef CONFIG_SYS_EXTBDINFO
 925         setup_board_extra,
 926 #endif
 927         INIT_FUNC_WATCHDOG_RESET
 928         reloc_fdt,
 929         setup_reloc,
 930 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
 931         copy_uboot_to_ram,
 932         clear_bss,
 933         do_elf_reloc_fixups,
 934 #endif
 935 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX)
 936         jump_to_copy,
 937 #endif
 938         NULL,
 939 };
 940
 941 void board_init_f(ulong boot_flags)
 942 {
 943 #ifdef CONFIG_SYS_GENERIC_GLOBAL_DATA
 944         /*
 945          * For some archtectures, global data is initialized and used before
 946          * calling this function. The data should be preserved. For others,
 947          * CONFIG_SYS_GENERIC_GLOBAL_DATA should be defined and use the stack
 948          * here to host global data until relocation.
 949          */
 950         gd_t data;
 951
 952         gd = &data;
 953
 954         /*
 955          * Clear global data before it is accessed at debug print
 956          * in initcall_run_list. Otherwise the debug print probably
 957          * get the wrong vaule of gd->have_console.
 958          */
 959         zero_global_data();
 960 #endif
 961
 962         gd->flags = boot_flags;
 963         gd->have_console = 0;
 964
 965         if (initcall_run_list(init_sequence_f))
 966                 hang();
 967
 968 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX)
 969         /* NOTREACHED - jump_to_copy() does not return */
 970         hang();
 971 #endif
 972 }
 973
 974 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
 975 /*
 976  * For now this code is only used on x86.
 977  *
 978  * init_sequence_f_r is the list of init functions which are run when
 979  * U-Boot is executing from Flash with a semi-limited 'C' environment.
 980  * The following limitations must be considered when implementing an
 981  * '_f_r' function:
 982  *  - 'static' variables are read-only
 983  *  - Global Data (gd->xxx) is read/write
 984  *
 985  * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if
 986  * supported).  It _should_, if possible, copy global data to RAM and
 987  * initialise the CPU caches (to speed up the relocation process)
 988  *
 989  * NOTE: At present only x86 uses this route, but it is intended that
 990  * all archs will move to this when generic relocation is implemented.
 991  */
 992 static init_fnc_t init_sequence_f_r[] = {
 993         init_cache_f_r,
 994
 995         NULL,
 996 };
 997
 998 void board_init_f_r(void)
 999 {
1000         if (initcall_run_list(init_sequence_f_r))
1001                 hang();
1002
1003         /*
1004          * U-Boot has been copied into SDRAM, the BSS has been cleared etc.
1005          * Transfer execution from Flash to RAM by calculating the address
1006          * of the in-RAM copy of board_init_r() and calling it
1007          */
1008         (board_init_r + gd->reloc_off)((gd_t *)gd, gd->relocaddr);
1009
1010         /* NOTREACHED - board_init_r() does not return */
1011         hang();
1012 }
1013 #endif /* CONFIG_X86 */
1014
1015 #ifndef CONFIG_X86
1016 ulong board_init_f_mem(ulong top)
1017 {
1018         /* Leave space for the stack we are running with now */
1019         top -= 0x40;
1020
1021         top -= sizeof(struct global_data);
1022         top = ALIGN(top, 16);
1023         gd = (struct global_data *)top;
1024         memset((void *)gd, '\0', sizeof(*gd));
1025
1026 #ifdef CONFIG_SYS_MALLOC_F_LEN
1027         top -= CONFIG_SYS_MALLOC_F_LEN;
1028         gd->malloc_base = top;
1029 #endif
1030
1031         return top;
1032 }
1033 #endif /* !CONFIG_X86 */