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 <console.h>
  15 #include <environment.h>
  16 #include <dm.h>
  17 #include <fdtdec.h>
  18 #include <fs.h>
  19 #include <i2c.h>
  20 #include <initcall.h>
  21 #include <init_helpers.h>
  22 #include <logbuff.h>
  23 #include <malloc.h>
  24 #include <mapmem.h>
  25 #include <os.h>
  26 #include <post.h>
  27 #include <relocate.h>
  28 #include <spi.h>
  29 #include <status_led.h>
  30 #include <timer.h>
  31 #include <trace.h>
  32 #include <video.h>
  33 #include <watchdog.h>
  34 #ifdef CONFIG_MACH_TYPE
  35 #include <asm/mach-types.h>
  36 #endif
  37 #if defined(CONFIG_MP) && defined(CONFIG_PPC)
  38 #include <asm/mp.h>
  39 #endif
  40 #include <asm/io.h>
  41 #include <asm/sections.h>
  42 #include <dm/root.h>
  43 #include <linux/errno.h>
  44
  45 /*
  46  * Pointer to initial global data area
  47  *
  48  * Here we initialize it if needed.
  49  */
  50 #ifdef XTRN_DECLARE_GLOBAL_DATA_PTR
  51 #undef  XTRN_DECLARE_GLOBAL_DATA_PTR
  52 #define XTRN_DECLARE_GLOBAL_DATA_PTR    /* empty = allocate here */
  53 DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CONFIG_SYS_INIT_GD_ADDR);
  54 #else
  55 DECLARE_GLOBAL_DATA_PTR;
  56 #endif
  57
  58 /*
  59  * TODO(sjg@chromium.org): IMO this code should be
  60  * refactored to a single function, something like:
  61  *
  62  * void led_set_state(enum led_colour_t colour, int on);
  63  */
  64 /************************************************************************
  65  * Coloured LED functionality
  66  ************************************************************************
  67  * May be supplied by boards if desired
  68  */
  69 __weak void coloured_LED_init(void) {}
  70 __weak void red_led_on(void) {}
  71 __weak void red_led_off(void) {}
  72 __weak void green_led_on(void) {}
  73 __weak void green_led_off(void) {}
  74 __weak void yellow_led_on(void) {}
  75 __weak void yellow_led_off(void) {}
  76 __weak void blue_led_on(void) {}
  77 __weak void blue_led_off(void) {}
  78
  79 /*
  80  * Why is gd allocated a register? Prior to reloc it might be better to
  81  * just pass it around to each function in this file?
  82  *
  83  * After reloc one could argue that it is hardly used and doesn't need
  84  * to be in a register. Or if it is it should perhaps hold pointers to all
  85  * global data for all modules, so that post-reloc we can avoid the massive
  86  * literal pool we get on ARM. Or perhaps just encourage each module to use
  87  * a structure...
  88  */
  89
  90 #if defined(CONFIG_WATCHDOG) || defined(CONFIG_HW_WATCHDOG)
  91 static int init_func_watchdog_init(void)
  92 {
  93 # if defined(CONFIG_HW_WATCHDOG) && \
  94         (defined(CONFIG_M68K) || defined(CONFIG_MICROBLAZE) || \
  95         defined(CONFIG_SH) || defined(CONFIG_AT91SAM9_WATCHDOG) || \
  96         defined(CONFIG_DESIGNWARE_WATCHDOG) || \
  97         defined(CONFIG_IMX_WATCHDOG))
  98         hw_watchdog_init();
  99         puts("       Watchdog enabled\n");
 100 # endif
 101         WATCHDOG_RESET();
 102
 103         return 0;
 104 }
 105
 106 int init_func_watchdog_reset(void)
 107 {
 108         WATCHDOG_RESET();
 109
 110         return 0;
 111 }
 112 #endif /* CONFIG_WATCHDOG */
 113
 114 __weak void board_add_ram_info(int use_default)
 115 {
 116         /* please define platform specific board_add_ram_info() */
 117 }
 118
 119 static int init_baud_rate(void)
 120 {
 121         gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
 122         return 0;
 123 }
 124
 125 static int display_text_info(void)
 126 {
 127 #if !defined(CONFIG_SANDBOX) && !defined(CONFIG_EFI_APP)
 128         ulong bss_start, bss_end, text_base;
 129
 130         bss_start = (ulong)&__bss_start;
 131         bss_end = (ulong)&__bss_end;
 132
 133 #ifdef CONFIG_SYS_TEXT_BASE
 134         text_base = CONFIG_SYS_TEXT_BASE;
 135 #else
 136         text_base = CONFIG_SYS_MONITOR_BASE;
 137 #endif
 138
 139         debug("U-Boot code: %08lX -> %08lX  BSS: -> %08lX\n",
 140                 text_base, bss_start, bss_end);
 141 #endif
 142
 143         return 0;
 144 }
 145
 146 static int announce_dram_init(void)
 147 {
 148         puts("DRAM:  ");
 149         return 0;
 150 }
 151
 152 static int show_dram_config(void)
 153 {
 154         unsigned long long size;
 155
 156 #ifdef CONFIG_NR_DRAM_BANKS
 157         int i;
 158
 159         debug("\nRAM Configuration:\n");
 160         for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
 161                 size += gd->bd->bi_dram[i].size;
 162                 debug("Bank #%d: %llx ", i,
 163                       (unsigned long long)(gd->bd->bi_dram[i].start));
 164 #ifdef DEBUG
 165                 print_size(gd->bd->bi_dram[i].size, "\n");
 166 #endif
 167         }
 168         debug("\nDRAM:  ");
 169 #else
 170         size = gd->ram_size;
 171 #endif
 172
 173         print_size(size, "");
 174         board_add_ram_info(0);
 175         putc('\n');
 176
 177         return 0;
 178 }
 179
 180 __weak int dram_init_banksize(void)
 181 {
 182 #if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE)
 183         gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
 184         gd->bd->bi_dram[0].size = get_effective_memsize();
 185 #endif
 186
 187         return 0;
 188 }
 189
 190 #if defined(CONFIG_SYS_I2C)
 191 static int init_func_i2c(void)
 192 {
 193         puts("I2C:   ");
 194 #ifdef CONFIG_SYS_I2C
 195         i2c_init_all();
 196 #else
 197         i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
 198 #endif
 199         puts("ready\n");
 200         return 0;
 201 }
 202 #endif
 203
 204 #if defined(CONFIG_HARD_SPI)
 205 static int init_func_spi(void)
 206 {
 207         puts("SPI:   ");
 208         spi_init();
 209         puts("ready\n");
 210         return 0;
 211 }
 212 #endif
 213
 214 __maybe_unused
 215 static int zero_global_data(void)
 216 {
 217         memset((void *)gd, '\0', sizeof(gd_t));
 218
 219         return 0;
 220 }
 221
 222 static int setup_mon_len(void)
 223 {
 224 #if defined(__ARM__) || defined(__MICROBLAZE__)
 225         gd->mon_len = (ulong)&__bss_end - (ulong)_start;
 226 #elif defined(CONFIG_SANDBOX) || defined(CONFIG_EFI_APP)
 227         gd->mon_len = (ulong)&_end - (ulong)_init;
 228 #elif defined(CONFIG_NIOS2) || defined(CONFIG_XTENSA)
 229         gd->mon_len = CONFIG_SYS_MONITOR_LEN;
 230 #elif defined(CONFIG_NDS32) || defined(CONFIG_SH)
 231         gd->mon_len = (ulong)(&__bss_end) - (ulong)(&_start);
 232 #elif defined(CONFIG_SYS_MONITOR_BASE)
 233         /* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */
 234         gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE;
 235 #endif
 236         return 0;
 237 }
 238
 239 __weak int arch_cpu_init(void)
 240 {
 241         return 0;
 242 }
 243
 244 __weak int mach_cpu_init(void)
 245 {
 246         return 0;
 247 }
 248
 249 /* Get the top of usable RAM */
 250 __weak ulong board_get_usable_ram_top(ulong total_size)
 251 {
 252 #ifdef CONFIG_SYS_SDRAM_BASE
 253         /*
 254          * Detect whether we have so much RAM that it goes past the end of our
 255          * 32-bit address space. If so, clip the usable RAM so it doesn't.
 256          */
 257         if (gd->ram_top < CONFIG_SYS_SDRAM_BASE)
 258                 /*
 259                  * Will wrap back to top of 32-bit space when reservations
 260                  * are made.
 261                  */
 262                 return 0;
 263 #endif
 264         return gd->ram_top;
 265 }
 266
 267 static int setup_dest_addr(void)
 268 {
 269         debug("Monitor len: %08lX\n", gd->mon_len);
 270         /*
 271          * Ram is setup, size stored in gd !!
 272          */
 273         debug("Ram size: %08lX\n", (ulong)gd->ram_size);
 274 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
 275         /*
 276          * Subtract specified amount of memory to hide so that it won't
 277          * get "touched" at all by U-Boot. By fixing up gd->ram_size
 278          * the Linux kernel should now get passed the now "corrected"
 279          * memory size and won't touch it either. This should work
 280          * for arch/ppc and arch/powerpc. Only Linux board ports in
 281          * arch/powerpc with bootwrapper support, that recalculate the
 282          * memory size from the SDRAM controller setup will have to
 283          * get fixed.
 284          */
 285         gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
 286 #endif
 287 #ifdef CONFIG_SYS_SDRAM_BASE
 288         gd->ram_top = CONFIG_SYS_SDRAM_BASE;
 289 #endif
 290         gd->ram_top += get_effective_memsize();
 291         gd->ram_top = board_get_usable_ram_top(gd->mon_len);
 292         gd->relocaddr = gd->ram_top;
 293         debug("Ram top: %08lX\n", (ulong)gd->ram_top);
 294 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
 295         /*
 296          * We need to make sure the location we intend to put secondary core
 297          * boot code is reserved and not used by any part of u-boot
 298          */
 299         if (gd->relocaddr > determine_mp_bootpg(NULL)) {
 300                 gd->relocaddr = determine_mp_bootpg(NULL);
 301                 debug("Reserving MP boot page to %08lx\n", gd->relocaddr);
 302         }
 303 #endif
 304         return 0;
 305 }
 306
 307 #if defined(CONFIG_LOGBUFFER)
 308 static int reserve_logbuffer(void)
 309 {
 310 #ifndef CONFIG_ALT_LB_ADDR
 311         /* reserve kernel log buffer */
 312         gd->relocaddr -= LOGBUFF_RESERVE;
 313         debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
 314                 gd->relocaddr);
 315 #endif
 316
 317         return 0;
 318 }
 319 #endif
 320
 321 #ifdef CONFIG_PRAM
 322 /* reserve protected RAM */
 323 static int reserve_pram(void)
 324 {
 325         ulong reg;
 326
 327         reg = getenv_ulong("pram", 10, CONFIG_PRAM);
 328         gd->relocaddr -= (reg << 10);           /* size is in kB */
 329         debug("Reserving %ldk for protected RAM at %08lx\n", reg,
 330               gd->relocaddr);
 331         return 0;
 332 }
 333 #endif /* CONFIG_PRAM */
 334
 335 /* Round memory pointer down to next 4 kB limit */
 336 static int reserve_round_4k(void)
 337 {
 338         gd->relocaddr &= ~(4096 - 1);
 339         return 0;
 340 }
 341
 342 #ifdef CONFIG_ARM
 343 static int reserve_mmu(void)
 344 {
 345 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
 346         /* reserve TLB table */
 347         gd->arch.tlb_size = PGTABLE_SIZE;
 348         gd->relocaddr -= gd->arch.tlb_size;
 349
 350         /* round down to next 64 kB limit */
 351         gd->relocaddr &= ~(0x10000 - 1);
 352
 353         gd->arch.tlb_addr = gd->relocaddr;
 354         debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr,
 355               gd->arch.tlb_addr + gd->arch.tlb_size);
 356
 357 #ifdef CONFIG_SYS_MEM_RESERVE_SECURE
 358         /*
 359          * Record allocated tlb_addr in case gd->tlb_addr to be overwritten
 360          * with location within secure ram.
 361          */
 362         gd->arch.tlb_allocated = gd->arch.tlb_addr;
 363 #endif
 364 #endif
 365
 366         return 0;
 367 }
 368 #endif
 369
 370 static int reserve_video(void)
 371 {
 372 #ifdef CONFIG_DM_VIDEO
 373         ulong addr;
 374         int ret;
 375
 376         addr = gd->relocaddr;
 377         ret = video_reserve(&addr);
 378         if (ret)
 379                 return ret;
 380         gd->relocaddr = addr;
 381 #elif defined(CONFIG_LCD)
 382 #  ifdef CONFIG_FB_ADDR
 383         gd->fb_base = CONFIG_FB_ADDR;
 384 #  else
 385         /* reserve memory for LCD display (always full pages) */
 386         gd->relocaddr = lcd_setmem(gd->relocaddr);
 387         gd->fb_base = gd->relocaddr;
 388 #  endif /* CONFIG_FB_ADDR */
 389 #elif defined(CONFIG_VIDEO) && \
 390                 (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) && \
 391                 !defined(CONFIG_ARM) && !defined(CONFIG_X86) && \
 392                 !defined(CONFIG_M68K)
 393         /* reserve memory for video display (always full pages) */
 394         gd->relocaddr = video_setmem(gd->relocaddr);
 395         gd->fb_base = gd->relocaddr;
 396 #endif
 397
 398         return 0;
 399 }
 400
 401 static int reserve_trace(void)
 402 {
 403 #ifdef CONFIG_TRACE
 404         gd->relocaddr -= CONFIG_TRACE_BUFFER_SIZE;
 405         gd->trace_buff = map_sysmem(gd->relocaddr, CONFIG_TRACE_BUFFER_SIZE);
 406         debug("Reserving %dk for trace data at: %08lx\n",
 407               CONFIG_TRACE_BUFFER_SIZE >> 10, gd->relocaddr);
 408 #endif
 409
 410         return 0;
 411 }
 412
 413 static int reserve_uboot(void)
 414 {
 415         /*
 416          * reserve memory for U-Boot code, data & bss
 417          * round down to next 4 kB limit
 418          */
 419         gd->relocaddr -= gd->mon_len;
 420         gd->relocaddr &= ~(4096 - 1);
 421 #ifdef CONFIG_E500
 422         /* round down to next 64 kB limit so that IVPR stays aligned */
 423         gd->relocaddr &= ~(65536 - 1);
 424 #endif
 425
 426         debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10,
 427               gd->relocaddr);
 428
 429         gd->start_addr_sp = gd->relocaddr;
 430
 431         return 0;
 432 }
 433
 434 /* reserve memory for malloc() area */
 435 static int reserve_malloc(void)
 436 {
 437         gd->start_addr_sp = gd->start_addr_sp - TOTAL_MALLOC_LEN;
 438         debug("Reserving %dk for malloc() at: %08lx\n",
 439                         TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp);
 440         return 0;
 441 }
 442
 443 /* (permanently) allocate a Board Info struct */
 444 static int reserve_board(void)
 445 {
 446         if (!gd->bd) {
 447                 gd->start_addr_sp -= sizeof(bd_t);
 448                 gd->bd = (bd_t *)map_sysmem(gd->start_addr_sp, sizeof(bd_t));
 449                 memset(gd->bd, '\0', sizeof(bd_t));
 450                 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
 451                       sizeof(bd_t), gd->start_addr_sp);
 452         }
 453         return 0;
 454 }
 455
 456 static int setup_machine(void)
 457 {
 458 #ifdef CONFIG_MACH_TYPE
 459         gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
 460 #endif
 461         return 0;
 462 }
 463
 464 static int reserve_global_data(void)
 465 {
 466         gd->start_addr_sp -= sizeof(gd_t);
 467         gd->new_gd = (gd_t *)map_sysmem(gd->start_addr_sp, sizeof(gd_t));
 468         debug("Reserving %zu Bytes for Global Data at: %08lx\n",
 469                         sizeof(gd_t), gd->start_addr_sp);
 470         return 0;
 471 }
 472
 473 static int reserve_fdt(void)
 474 {
 475 #ifndef CONFIG_OF_EMBED
 476         /*
 477          * If the device tree is sitting immediately above our image then we
 478          * must relocate it. If it is embedded in the data section, then it
 479          * will be relocated with other data.
 480          */
 481         if (gd->fdt_blob) {
 482                 gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
 483
 484                 gd->start_addr_sp -= gd->fdt_size;
 485                 gd->new_fdt = map_sysmem(gd->start_addr_sp, gd->fdt_size);
 486                 debug("Reserving %lu Bytes for FDT at: %08lx\n",
 487                       gd->fdt_size, gd->start_addr_sp);
 488         }
 489 #endif
 490
 491         return 0;
 492 }
 493
 494 int arch_reserve_stacks(void)
 495 {
 496         return 0;
 497 }
 498
 499 static int reserve_stacks(void)
 500 {
 501         /* make stack pointer 16-byte aligned */
 502         gd->start_addr_sp -= 16;
 503         gd->start_addr_sp &= ~0xf;
 504
 505         /*
 506          * let the architecture-specific code tailor gd->start_addr_sp and
 507          * gd->irq_sp
 508          */
 509         return arch_reserve_stacks();
 510 }
 511
 512 static int display_new_sp(void)
 513 {
 514         debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp);
 515
 516         return 0;
 517 }
 518
 519 #if defined(CONFIG_M68K) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || \
 520         defined(CONFIG_SH)
 521 static int setup_board_part1(void)
 522 {
 523         bd_t *bd = gd->bd;
 524
 525         /*
 526          * Save local variables to board info struct
 527          */
 528         bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;        /* start of memory */
 529         bd->bi_memsize = gd->ram_size;                  /* size in bytes */
 530
 531 #ifdef CONFIG_SYS_SRAM_BASE
 532         bd->bi_sramstart = CONFIG_SYS_SRAM_BASE;        /* start of SRAM */
 533         bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE;         /* size  of SRAM */
 534 #endif
 535
 536 #if defined(CONFIG_8xx) || defined(CONFIG_MPC8260) || defined(CONFIG_5xx) || \
 537                 defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
 538         bd->bi_immr_base = CONFIG_SYS_IMMR;     /* base  of IMMR register     */
 539 #endif
 540 #if defined(CONFIG_MPC5xxx) || defined(CONFIG_M68K)
 541         bd->bi_mbar_base = CONFIG_SYS_MBAR;     /* base of internal registers */
 542 #endif
 543 #if defined(CONFIG_MPC83xx)
 544         bd->bi_immrbar = CONFIG_SYS_IMMR;
 545 #endif
 546
 547         return 0;
 548 }
 549 #endif
 550
 551 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
 552 static int setup_board_part2(void)
 553 {
 554         bd_t *bd = gd->bd;
 555
 556         bd->bi_intfreq = gd->cpu_clk;   /* Internal Freq, in Hz */
 557         bd->bi_busfreq = gd->bus_clk;   /* Bus Freq,      in Hz */
 558 #if defined(CONFIG_CPM2)
 559         bd->bi_cpmfreq = gd->arch.cpm_clk;
 560         bd->bi_brgfreq = gd->arch.brg_clk;
 561         bd->bi_sccfreq = gd->arch.scc_clk;
 562         bd->bi_vco = gd->arch.vco_out;
 563 #endif /* CONFIG_CPM2 */
 564 #if defined(CONFIG_MPC512X)
 565         bd->bi_ipsfreq = gd->arch.ips_clk;
 566 #endif /* CONFIG_MPC512X */
 567 #if defined(CONFIG_MPC5xxx)
 568         bd->bi_ipbfreq = gd->arch.ipb_clk;
 569         bd->bi_pcifreq = gd->pci_clk;
 570 #endif /* CONFIG_MPC5xxx */
 571 #if defined(CONFIG_M68K) && defined(CONFIG_PCI)
 572         bd->bi_pcifreq = gd->pci_clk;
 573 #endif
 574 #if defined(CONFIG_EXTRA_CLOCK)
 575         bd->bi_inpfreq = gd->arch.inp_clk;      /* input Freq in Hz */
 576         bd->bi_vcofreq = gd->arch.vco_clk;      /* vco Freq in Hz */
 577         bd->bi_flbfreq = gd->arch.flb_clk;      /* flexbus Freq in Hz */
 578 #endif
 579
 580         return 0;
 581 }
 582 #endif
 583
 584 #ifdef CONFIG_POST
 585 static int init_post(void)
 586 {
 587         post_bootmode_init();
 588         post_run(NULL, POST_ROM | post_bootmode_get(0));
 589
 590         return 0;
 591 }
 592 #endif
 593
 594 static int reloc_fdt(void)
 595 {
 596 #ifndef CONFIG_OF_EMBED
 597         if (gd->flags & GD_FLG_SKIP_RELOC)
 598                 return 0;
 599         if (gd->new_fdt) {
 600                 memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size);
 601                 gd->fdt_blob = gd->new_fdt;
 602         }
 603 #endif
 604
 605         return 0;
 606 }
 607
 608 static int setup_reloc(void)
 609 {
 610         if (gd->flags & GD_FLG_SKIP_RELOC) {
 611                 debug("Skipping relocation due to flag\n");
 612                 return 0;
 613         }
 614
 615 #ifdef CONFIG_SYS_TEXT_BASE
 616         gd->reloc_off = gd->relocaddr - CONFIG_SYS_TEXT_BASE;
 617 #ifdef CONFIG_M68K
 618         /*
 619          * On all ColdFire arch cpu, monitor code starts always
 620          * just after the default vector table location, so at 0x400
 621          */
 622         gd->reloc_off = gd->relocaddr - (CONFIG_SYS_TEXT_BASE + 0x400);
 623 #endif
 624 #endif
 625         memcpy(gd->new_gd, (char *)gd, sizeof(gd_t));
 626
 627         debug("Relocation Offset is: %08lx\n", gd->reloc_off);
 628         debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n",
 629               gd->relocaddr, (ulong)map_to_sysmem(gd->new_gd),
 630               gd->start_addr_sp);
 631
 632         return 0;
 633 }
 634
 635 #ifdef CONFIG_OF_BOARD_FIXUP
 636 static int fix_fdt(void)
 637 {
 638         return board_fix_fdt((void *)gd->fdt_blob);
 639 }
 640 #endif
 641
 642 /* ARM calls relocate_code from its crt0.S */
 643 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
 644                 !CONFIG_IS_ENABLED(X86_64)
 645
 646 static int jump_to_copy(void)
 647 {
 648         if (gd->flags & GD_FLG_SKIP_RELOC)
 649                 return 0;
 650         /*
 651          * x86 is special, but in a nice way. It uses a trampoline which
 652          * enables the dcache if possible.
 653          *
 654          * For now, other archs use relocate_code(), which is implemented
 655          * similarly for all archs. When we do generic relocation, hopefully
 656          * we can make all archs enable the dcache prior to relocation.
 657          */
 658 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
 659         /*
 660          * SDRAM and console are now initialised. The final stack can now
 661          * be setup in SDRAM. Code execution will continue in Flash, but
 662          * with the stack in SDRAM and Global Data in temporary memory
 663          * (CPU cache)
 664          */
 665         arch_setup_gd(gd->new_gd);
 666         board_init_f_r_trampoline(gd->start_addr_sp);
 667 #else
 668         relocate_code(gd->start_addr_sp, gd->new_gd, gd->relocaddr);
 669 #endif
 670
 671         return 0;
 672 }
 673 #endif
 674
 675 /* Record the board_init_f() bootstage (after arch_cpu_init()) */
 676 static int mark_bootstage(void)
 677 {
 678         bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
 679
 680         return 0;
 681 }
 682
 683 static int initf_console_record(void)
 684 {
 685 #if defined(CONFIG_CONSOLE_RECORD) && defined(CONFIG_SYS_MALLOC_F_LEN)
 686         return console_record_init();
 687 #else
 688         return 0;
 689 #endif
 690 }
 691
 692 static int initf_dm(void)
 693 {
 694 #if defined(CONFIG_DM) && defined(CONFIG_SYS_MALLOC_F_LEN)
 695         int ret;
 696
 697         ret = dm_init_and_scan(true);
 698         if (ret)
 699                 return ret;
 700 #endif
 701 #ifdef CONFIG_TIMER_EARLY
 702         ret = dm_timer_init();
 703         if (ret)
 704                 return ret;
 705 #endif
 706
 707         return 0;
 708 }
 709
 710 /* Architecture-specific memory reservation */
 711 __weak int reserve_arch(void)
 712 {
 713         return 0;
 714 }
 715
 716 __weak int arch_cpu_init_dm(void)
 717 {
 718         return 0;
 719 }
 720
 721 static const init_fnc_t init_sequence_f[] = {
 722         setup_mon_len,
 723 #ifdef CONFIG_OF_CONTROL
 724         fdtdec_setup,
 725 #endif
 726 #ifdef CONFIG_TRACE
 727         trace_early_init,
 728 #endif
 729         initf_malloc,
 730         initf_console_record,
 731 #if defined(CONFIG_HAVE_FSP)
 732         arch_fsp_init,
 733 #endif
 734         arch_cpu_init,          /* basic arch cpu dependent setup */
 735         mach_cpu_init,          /* SoC/machine dependent CPU setup */
 736         initf_dm,
 737         arch_cpu_init_dm,
 738         mark_bootstage,         /* need timer, go after init dm */
 739 #if defined(CONFIG_BOARD_EARLY_INIT_F)
 740         board_early_init_f,
 741 #endif
 742 #if defined(CONFIG_PPC) || defined(CONFIG_SYS_FSL_CLK) || defined(CONFIG_M68K)
 743         /* get CPU and bus clocks according to the environment variable */
 744         get_clocks,             /* get CPU and bus clocks (etc.) */
 745 #endif
 746 #if !defined(CONFIG_M68K)
 747         timer_init,             /* initialize timer */
 748 #endif
 749 #if defined(CONFIG_BOARD_POSTCLK_INIT)
 750         board_postclk_init,
 751 #endif
 752         env_init,               /* initialize environment */
 753         init_baud_rate,         /* initialze baudrate settings */
 754         serial_init,            /* serial communications setup */
 755         console_init_f,         /* stage 1 init of console */
 756         display_options,        /* say that we are here */
 757         display_text_info,      /* show debugging info if required */
 758 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_SH) || \
 759                 defined(CONFIG_X86)
 760         checkcpu,
 761 #endif
 762 #if defined(CONFIG_DISPLAY_CPUINFO)
 763         print_cpuinfo,          /* display cpu info (and speed) */
 764 #endif
 765 #if defined(CONFIG_DISPLAY_BOARDINFO)
 766         show_board_info,
 767 #endif
 768         INIT_FUNC_WATCHDOG_INIT
 769 #if defined(CONFIG_MISC_INIT_F)
 770         misc_init_f,
 771 #endif
 772         INIT_FUNC_WATCHDOG_RESET
 773 #if defined(CONFIG_SYS_I2C)
 774         init_func_i2c,
 775 #endif
 776 #if defined(CONFIG_HARD_SPI)
 777         init_func_spi,
 778 #endif
 779         announce_dram_init,
 780         dram_init,              /* configure available RAM banks */
 781 #ifdef CONFIG_POST
 782         post_init_f,
 783 #endif
 784         INIT_FUNC_WATCHDOG_RESET
 785 #if defined(CONFIG_SYS_DRAM_TEST)
 786         testdram,
 787 #endif /* CONFIG_SYS_DRAM_TEST */
 788         INIT_FUNC_WATCHDOG_RESET
 789
 790 #ifdef CONFIG_POST
 791         init_post,
 792 #endif
 793         INIT_FUNC_WATCHDOG_RESET
 794         /*
 795          * Now that we have DRAM mapped and working, we can
 796          * relocate the code and continue running from DRAM.
 797          *
 798          * Reserve memory at end of RAM for (top down in that order):
 799          *  - area that won't get touched by U-Boot and Linux (optional)
 800          *  - kernel log buffer
 801          *  - protected RAM
 802          *  - LCD framebuffer
 803          *  - monitor code
 804          *  - board info struct
 805          */
 806         setup_dest_addr,
 807 #if defined(CONFIG_LOGBUFFER)
 808         reserve_logbuffer,
 809 #endif
 810 #ifdef CONFIG_PRAM
 811         reserve_pram,
 812 #endif
 813         reserve_round_4k,
 814 #ifdef CONFIG_ARM
 815         reserve_mmu,
 816 #endif
 817         reserve_video,
 818         reserve_trace,
 819         reserve_uboot,
 820         reserve_malloc,
 821         reserve_board,
 822         setup_machine,
 823         reserve_global_data,
 824         reserve_fdt,
 825         reserve_arch,
 826         reserve_stacks,
 827         dram_init_banksize,
 828         show_dram_config,
 829 #if defined(CONFIG_M68K) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || \
 830         defined(CONFIG_SH)
 831         setup_board_part1,
 832 #endif
 833 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
 834         INIT_FUNC_WATCHDOG_RESET
 835         setup_board_part2,
 836 #endif
 837         display_new_sp,
 838 #ifdef CONFIG_SYS_EXTBDINFO
 839         setup_board_extra,
 840 #endif
 841 #ifdef CONFIG_OF_BOARD_FIXUP
 842         fix_fdt,
 843 #endif
 844         INIT_FUNC_WATCHDOG_RESET
 845         reloc_fdt,
 846         setup_reloc,
 847 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
 848         copy_uboot_to_ram,
 849         do_elf_reloc_fixups,
 850         clear_bss,
 851 #endif
 852 #if defined(CONFIG_XTENSA)
 853         clear_bss,
 854 #endif
 855 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
 856                 !CONFIG_IS_ENABLED(X86_64)
 857         jump_to_copy,
 858 #endif
 859         NULL,
 860 };
 861
 862 void board_init_f(ulong boot_flags)
 863 {
 864 #ifdef CONFIG_SYS_GENERIC_GLOBAL_DATA
 865         /*
 866          * For some architectures, global data is initialized and used before
 867          * calling this function. The data should be preserved. For others,
 868          * CONFIG_SYS_GENERIC_GLOBAL_DATA should be defined and use the stack
 869          * here to host global data until relocation.
 870          */
 871         gd_t data;
 872
 873         gd = &data;
 874
 875         /*
 876          * Clear global data before it is accessed at debug print
 877          * in initcall_run_list. Otherwise the debug print probably
 878          * get the wrong value of gd->have_console.
 879          */
 880         zero_global_data();
 881 #endif
 882
 883         gd->flags = boot_flags;
 884         gd->have_console = 0;
 885
 886         if (initcall_run_list(init_sequence_f))
 887                 hang();
 888
 889 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
 890                 !defined(CONFIG_EFI_APP) && !CONFIG_IS_ENABLED(X86_64)
 891         /* NOTREACHED - jump_to_copy() does not return */
 892         hang();
 893 #endif
 894 }
 895
 896 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
 897 /*
 898  * For now this code is only used on x86.
 899  *
 900  * init_sequence_f_r is the list of init functions which are run when
 901  * U-Boot is executing from Flash with a semi-limited 'C' environment.
 902  * The following limitations must be considered when implementing an
 903  * '_f_r' function:
 904  *  - 'static' variables are read-only
 905  *  - Global Data (gd->xxx) is read/write
 906  *
 907  * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if
 908  * supported).  It _should_, if possible, copy global data to RAM and
 909  * initialise the CPU caches (to speed up the relocation process)
 910  *
 911  * NOTE: At present only x86 uses this route, but it is intended that
 912  * all archs will move to this when generic relocation is implemented.
 913  */
 914 static const init_fnc_t init_sequence_f_r[] = {
 915 #if !CONFIG_IS_ENABLED(X86_64)
 916         init_cache_f_r,
 917 #endif
 918
 919         NULL,
 920 };
 921
 922 void board_init_f_r(void)
 923 {
 924         if (initcall_run_list(init_sequence_f_r))
 925                 hang();
 926
 927         /*
 928          * The pre-relocation drivers may be using memory that has now gone
 929          * away. Mark serial as unavailable - this will fall back to the debug
 930          * UART if available.
 931          */
 932         gd->flags &= ~GD_FLG_SERIAL_READY;
 933
 934         /*
 935          * U-Boot has been copied into SDRAM, the BSS has been cleared etc.
 936          * Transfer execution from Flash to RAM by calculating the address
 937          * of the in-RAM copy of board_init_r() and calling it
 938          */
 939         (board_init_r + gd->reloc_off)((gd_t *)gd, gd->relocaddr);
 940
 941         /* NOTREACHED - board_init_r() does not return */
 942         hang();
 943 }
 944 #endif /* CONFIG_X86 */