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 #if defined(CONFIG_MP) && defined(CONFIG_PPC)
  35 #include <asm/mp.h>
  36 #endif
  37 #include <asm/io.h>
  38 #include <asm/sections.h>
  39 #include <dm/root.h>
  40 #include <linux/errno.h>
  41
  42 /*
  43  * Pointer to initial global data area
  44  *
  45  * Here we initialize it if needed.
  46  */
  47 #ifdef XTRN_DECLARE_GLOBAL_DATA_PTR
  48 #undef  XTRN_DECLARE_GLOBAL_DATA_PTR
  49 #define XTRN_DECLARE_GLOBAL_DATA_PTR    /* empty = allocate here */
  50 DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CONFIG_SYS_INIT_GD_ADDR);
  51 #else
  52 DECLARE_GLOBAL_DATA_PTR;
  53 #endif
  54
  55 /*
  56  * TODO(sjg@chromium.org): IMO this code should be
  57  * refactored to a single function, something like:
  58  *
  59  * void led_set_state(enum led_colour_t colour, int on);
  60  */
  61 /************************************************************************
  62  * Coloured LED functionality
  63  ************************************************************************
  64  * May be supplied by boards if desired
  65  */
  66 __weak void coloured_LED_init(void) {}
  67 __weak void red_led_on(void) {}
  68 __weak void red_led_off(void) {}
  69 __weak void green_led_on(void) {}
  70 __weak void green_led_off(void) {}
  71 __weak void yellow_led_on(void) {}
  72 __weak void yellow_led_off(void) {}
  73 __weak void blue_led_on(void) {}
  74 __weak void blue_led_off(void) {}
  75
  76 /*
  77  * Why is gd allocated a register? Prior to reloc it might be better to
  78  * just pass it around to each function in this file?
  79  *
  80  * After reloc one could argue that it is hardly used and doesn't need
  81  * to be in a register. Or if it is it should perhaps hold pointers to all
  82  * global data for all modules, so that post-reloc we can avoid the massive
  83  * literal pool we get on ARM. Or perhaps just encourage each module to use
  84  * a structure...
  85  */
  86
  87 #if defined(CONFIG_WATCHDOG) || defined(CONFIG_HW_WATCHDOG)
  88 static int init_func_watchdog_init(void)
  89 {
  90 # if defined(CONFIG_HW_WATCHDOG) && \
  91         (defined(CONFIG_M68K) || defined(CONFIG_MICROBLAZE) || \
  92         defined(CONFIG_SH) || defined(CONFIG_AT91SAM9_WATCHDOG) || \
  93         defined(CONFIG_DESIGNWARE_WATCHDOG) || \
  94         defined(CONFIG_IMX_WATCHDOG))
  95         hw_watchdog_init();
  96         puts("       Watchdog enabled\n");
  97 # endif
  98         WATCHDOG_RESET();
  99
 100         return 0;
 101 }
 102
 103 int init_func_watchdog_reset(void)
 104 {
 105         WATCHDOG_RESET();
 106
 107         return 0;
 108 }
 109 #endif /* CONFIG_WATCHDOG */
 110
 111 __weak void board_add_ram_info(int use_default)
 112 {
 113         /* please define platform specific board_add_ram_info() */
 114 }
 115
 116 static int init_baud_rate(void)
 117 {
 118         gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
 119         return 0;
 120 }
 121
 122 static int display_text_info(void)
 123 {
 124 #if !defined(CONFIG_SANDBOX) && !defined(CONFIG_EFI_APP)
 125         ulong bss_start, bss_end, text_base;
 126
 127         bss_start = (ulong)&__bss_start;
 128         bss_end = (ulong)&__bss_end;
 129
 130 #ifdef CONFIG_SYS_TEXT_BASE
 131         text_base = CONFIG_SYS_TEXT_BASE;
 132 #else
 133         text_base = CONFIG_SYS_MONITOR_BASE;
 134 #endif
 135
 136         debug("U-Boot code: %08lX -> %08lX  BSS: -> %08lX\n",
 137                 text_base, bss_start, bss_end);
 138 #endif
 139
 140         return 0;
 141 }
 142
 143 static int announce_dram_init(void)
 144 {
 145         puts("DRAM:  ");
 146         return 0;
 147 }
 148
 149 static int show_dram_config(void)
 150 {
 151         unsigned long long size;
 152
 153 #ifdef CONFIG_NR_DRAM_BANKS
 154         int i;
 155
 156         debug("\nRAM Configuration:\n");
 157         for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
 158                 size += gd->bd->bi_dram[i].size;
 159                 debug("Bank #%d: %llx ", i,
 160                       (unsigned long long)(gd->bd->bi_dram[i].start));
 161 #ifdef DEBUG
 162                 print_size(gd->bd->bi_dram[i].size, "\n");
 163 #endif
 164         }
 165         debug("\nDRAM:  ");
 166 #else
 167         size = gd->ram_size;
 168 #endif
 169
 170         print_size(size, "");
 171         board_add_ram_info(0);
 172         putc('\n');
 173
 174         return 0;
 175 }
 176
 177 __weak int dram_init_banksize(void)
 178 {
 179 #if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE)
 180         gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
 181         gd->bd->bi_dram[0].size = get_effective_memsize();
 182 #endif
 183
 184         return 0;
 185 }
 186
 187 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
 188 static int init_func_i2c(void)
 189 {
 190         puts("I2C:   ");
 191 #ifdef CONFIG_SYS_I2C
 192         i2c_init_all();
 193 #else
 194         i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
 195 #endif
 196         puts("ready\n");
 197         return 0;
 198 }
 199 #endif
 200
 201 #if defined(CONFIG_HARD_SPI)
 202 static int init_func_spi(void)
 203 {
 204         puts("SPI:   ");
 205         spi_init();
 206         puts("ready\n");
 207         return 0;
 208 }
 209 #endif
 210
 211 __maybe_unused
 212 static int zero_global_data(void)
 213 {
 214         memset((void *)gd, '\0', sizeof(gd_t));
 215
 216         return 0;
 217 }
 218
 219 static int setup_mon_len(void)
 220 {
 221 #if defined(__ARM__) || defined(__MICROBLAZE__)
 222         gd->mon_len = (ulong)&__bss_end - (ulong)_start;
 223 #elif defined(CONFIG_SANDBOX) || defined(CONFIG_EFI_APP)
 224         gd->mon_len = (ulong)&_end - (ulong)_init;
 225 #elif defined(CONFIG_NIOS2) || defined(CONFIG_XTENSA)
 226         gd->mon_len = CONFIG_SYS_MONITOR_LEN;
 227 #elif defined(CONFIG_NDS32) || defined(CONFIG_SH)
 228         gd->mon_len = (ulong)(&__bss_end) - (ulong)(&_start);
 229 #elif defined(CONFIG_SYS_MONITOR_BASE)
 230         /* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */
 231         gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE;
 232 #endif
 233         return 0;
 234 }
 235
 236 __weak int arch_cpu_init(void)
 237 {
 238         return 0;
 239 }
 240
 241 __weak int mach_cpu_init(void)
 242 {
 243         return 0;
 244 }
 245
 246 /* Get the top of usable RAM */
 247 __weak ulong board_get_usable_ram_top(ulong total_size)
 248 {
 249 #ifdef CONFIG_SYS_SDRAM_BASE
 250         /*
 251          * Detect whether we have so much RAM that it goes past the end of our
 252          * 32-bit address space. If so, clip the usable RAM so it doesn't.
 253          */
 254         if (gd->ram_top < CONFIG_SYS_SDRAM_BASE)
 255                 /*
 256                  * Will wrap back to top of 32-bit space when reservations
 257                  * are made.
 258                  */
 259                 return 0;
 260 #endif
 261         return gd->ram_top;
 262 }
 263
 264 static int setup_dest_addr(void)
 265 {
 266         debug("Monitor len: %08lX\n", gd->mon_len);
 267         /*
 268          * Ram is setup, size stored in gd !!
 269          */
 270         debug("Ram size: %08lX\n", (ulong)gd->ram_size);
 271 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
 272         /*
 273          * Subtract specified amount of memory to hide so that it won't
 274          * get "touched" at all by U-Boot. By fixing up gd->ram_size
 275          * the Linux kernel should now get passed the now "corrected"
 276          * memory size and won't touch it either. This should work
 277          * for arch/ppc and arch/powerpc. Only Linux board ports in
 278          * arch/powerpc with bootwrapper support, that recalculate the
 279          * memory size from the SDRAM controller setup will have to
 280          * get fixed.
 281          */
 282         gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
 283 #endif
 284 #ifdef CONFIG_SYS_SDRAM_BASE
 285         gd->ram_top = CONFIG_SYS_SDRAM_BASE;
 286 #endif
 287         gd->ram_top += get_effective_memsize();
 288         gd->ram_top = board_get_usable_ram_top(gd->mon_len);
 289         gd->relocaddr = gd->ram_top;
 290         debug("Ram top: %08lX\n", (ulong)gd->ram_top);
 291 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
 292         /*
 293          * We need to make sure the location we intend to put secondary core
 294          * boot code is reserved and not used by any part of u-boot
 295          */
 296         if (gd->relocaddr > determine_mp_bootpg(NULL)) {
 297                 gd->relocaddr = determine_mp_bootpg(NULL);
 298                 debug("Reserving MP boot page to %08lx\n", gd->relocaddr);
 299         }
 300 #endif
 301         return 0;
 302 }
 303
 304 #if defined(CONFIG_LOGBUFFER)
 305 static int reserve_logbuffer(void)
 306 {
 307 #ifndef CONFIG_ALT_LB_ADDR
 308         /* reserve kernel log buffer */
 309         gd->relocaddr -= LOGBUFF_RESERVE;
 310         debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
 311                 gd->relocaddr);
 312 #endif
 313
 314         return 0;
 315 }
 316 #endif
 317
 318 #ifdef CONFIG_PRAM
 319 /* reserve protected RAM */
 320 static int reserve_pram(void)
 321 {
 322         ulong reg;
 323
 324         reg = getenv_ulong("pram", 10, CONFIG_PRAM);
 325         gd->relocaddr -= (reg << 10);           /* size is in kB */
 326         debug("Reserving %ldk for protected RAM at %08lx\n", reg,
 327               gd->relocaddr);
 328         return 0;
 329 }
 330 #endif /* CONFIG_PRAM */
 331
 332 /* Round memory pointer down to next 4 kB limit */
 333 static int reserve_round_4k(void)
 334 {
 335         gd->relocaddr &= ~(4096 - 1);
 336         return 0;
 337 }
 338
 339 #ifdef CONFIG_ARM
 340 static int reserve_mmu(void)
 341 {
 342 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
 343         /* reserve TLB table */
 344         gd->arch.tlb_size = PGTABLE_SIZE;
 345         gd->relocaddr -= gd->arch.tlb_size;
 346
 347         /* round down to next 64 kB limit */
 348         gd->relocaddr &= ~(0x10000 - 1);
 349
 350         gd->arch.tlb_addr = gd->relocaddr;
 351         debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr,
 352               gd->arch.tlb_addr + gd->arch.tlb_size);
 353
 354 #ifdef CONFIG_SYS_MEM_RESERVE_SECURE
 355         /*
 356          * Record allocated tlb_addr in case gd->tlb_addr to be overwritten
 357          * with location within secure ram.
 358          */
 359         gd->arch.tlb_allocated = gd->arch.tlb_addr;
 360 #endif
 361 #endif
 362
 363         return 0;
 364 }
 365 #endif
 366
 367 static int reserve_video(void)
 368 {
 369 #ifdef CONFIG_DM_VIDEO
 370         ulong addr;
 371         int ret;
 372
 373         addr = gd->relocaddr;
 374         ret = video_reserve(&addr);
 375         if (ret)
 376                 return ret;
 377         gd->relocaddr = addr;
 378 #elif defined(CONFIG_LCD)
 379 #  ifdef CONFIG_FB_ADDR
 380         gd->fb_base = CONFIG_FB_ADDR;
 381 #  else
 382         /* reserve memory for LCD display (always full pages) */
 383         gd->relocaddr = lcd_setmem(gd->relocaddr);
 384         gd->fb_base = gd->relocaddr;
 385 #  endif /* CONFIG_FB_ADDR */
 386 #elif defined(CONFIG_VIDEO) && \
 387                 (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) && \
 388                 !defined(CONFIG_ARM) && !defined(CONFIG_X86) && \
 389                 !defined(CONFIG_M68K)
 390         /* reserve memory for video display (always full pages) */
 391         gd->relocaddr = video_setmem(gd->relocaddr);
 392         gd->fb_base = gd->relocaddr;
 393 #endif
 394
 395         return 0;
 396 }
 397
 398 static int reserve_trace(void)
 399 {
 400 #ifdef CONFIG_TRACE
 401         gd->relocaddr -= CONFIG_TRACE_BUFFER_SIZE;
 402         gd->trace_buff = map_sysmem(gd->relocaddr, CONFIG_TRACE_BUFFER_SIZE);
 403         debug("Reserving %dk for trace data at: %08lx\n",
 404               CONFIG_TRACE_BUFFER_SIZE >> 10, gd->relocaddr);
 405 #endif
 406
 407         return 0;
 408 }
 409
 410 static int reserve_uboot(void)
 411 {
 412         /*
 413          * reserve memory for U-Boot code, data & bss
 414          * round down to next 4 kB limit
 415          */
 416         gd->relocaddr -= gd->mon_len;
 417         gd->relocaddr &= ~(4096 - 1);
 418 #ifdef CONFIG_E500
 419         /* round down to next 64 kB limit so that IVPR stays aligned */
 420         gd->relocaddr &= ~(65536 - 1);
 421 #endif
 422
 423         debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10,
 424               gd->relocaddr);
 425
 426         gd->start_addr_sp = gd->relocaddr;
 427
 428         return 0;
 429 }
 430
 431 /* reserve memory for malloc() area */
 432 static int reserve_malloc(void)
 433 {
 434         gd->start_addr_sp = gd->start_addr_sp - TOTAL_MALLOC_LEN;
 435         debug("Reserving %dk for malloc() at: %08lx\n",
 436                         TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp);
 437         return 0;
 438 }
 439
 440 /* (permanently) allocate a Board Info struct */
 441 static int reserve_board(void)
 442 {
 443         if (!gd->bd) {
 444                 gd->start_addr_sp -= sizeof(bd_t);
 445                 gd->bd = (bd_t *)map_sysmem(gd->start_addr_sp, sizeof(bd_t));
 446                 memset(gd->bd, '\0', sizeof(bd_t));
 447                 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
 448                       sizeof(bd_t), gd->start_addr_sp);
 449         }
 450         return 0;
 451 }
 452
 453 static int setup_machine(void)
 454 {
 455 #ifdef CONFIG_MACH_TYPE
 456         gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
 457 #endif
 458         return 0;
 459 }
 460
 461 static int reserve_global_data(void)
 462 {
 463         gd->start_addr_sp -= sizeof(gd_t);
 464         gd->new_gd = (gd_t *)map_sysmem(gd->start_addr_sp, sizeof(gd_t));
 465         debug("Reserving %zu Bytes for Global Data at: %08lx\n",
 466                         sizeof(gd_t), gd->start_addr_sp);
 467         return 0;
 468 }
 469
 470 static int reserve_fdt(void)
 471 {
 472 #ifndef CONFIG_OF_EMBED
 473         /*
 474          * If the device tree is sitting immediately above our image then we
 475          * must relocate it. If it is embedded in the data section, then it
 476          * will be relocated with other data.
 477          */
 478         if (gd->fdt_blob) {
 479                 gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
 480
 481                 gd->start_addr_sp -= gd->fdt_size;
 482                 gd->new_fdt = map_sysmem(gd->start_addr_sp, gd->fdt_size);
 483                 debug("Reserving %lu Bytes for FDT at: %08lx\n",
 484                       gd->fdt_size, gd->start_addr_sp);
 485         }
 486 #endif
 487
 488         return 0;
 489 }
 490
 491 int arch_reserve_stacks(void)
 492 {
 493         return 0;
 494 }
 495
 496 static int reserve_stacks(void)
 497 {
 498         /* make stack pointer 16-byte aligned */
 499         gd->start_addr_sp -= 16;
 500         gd->start_addr_sp &= ~0xf;
 501
 502         /*
 503          * let the architecture-specific code tailor gd->start_addr_sp and
 504          * gd->irq_sp
 505          */
 506         return arch_reserve_stacks();
 507 }
 508
 509 static int display_new_sp(void)
 510 {
 511         debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp);
 512
 513         return 0;
 514 }
 515
 516 #if defined(CONFIG_M68K) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || \
 517         defined(CONFIG_SH)
 518 static int setup_board_part1(void)
 519 {
 520         bd_t *bd = gd->bd;
 521
 522         /*
 523          * Save local variables to board info struct
 524          */
 525         bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;        /* start of memory */
 526         bd->bi_memsize = gd->ram_size;                  /* size in bytes */
 527
 528 #ifdef CONFIG_SYS_SRAM_BASE
 529         bd->bi_sramstart = CONFIG_SYS_SRAM_BASE;        /* start of SRAM */
 530         bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE;         /* size  of SRAM */
 531 #endif
 532
 533 #if defined(CONFIG_8xx) || defined(CONFIG_MPC8260) || defined(CONFIG_5xx) || \
 534                 defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
 535         bd->bi_immr_base = CONFIG_SYS_IMMR;     /* base  of IMMR register     */
 536 #endif
 537 #if defined(CONFIG_MPC5xxx) || defined(CONFIG_M68K)
 538         bd->bi_mbar_base = CONFIG_SYS_MBAR;     /* base of internal registers */
 539 #endif
 540 #if defined(CONFIG_MPC83xx)
 541         bd->bi_immrbar = CONFIG_SYS_IMMR;
 542 #endif
 543
 544         return 0;
 545 }
 546 #endif
 547
 548 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
 549 static int setup_board_part2(void)
 550 {
 551         bd_t *bd = gd->bd;
 552
 553         bd->bi_intfreq = gd->cpu_clk;   /* Internal Freq, in Hz */
 554         bd->bi_busfreq = gd->bus_clk;   /* Bus Freq,      in Hz */
 555 #if defined(CONFIG_CPM2)
 556         bd->bi_cpmfreq = gd->arch.cpm_clk;
 557         bd->bi_brgfreq = gd->arch.brg_clk;
 558         bd->bi_sccfreq = gd->arch.scc_clk;
 559         bd->bi_vco = gd->arch.vco_out;
 560 #endif /* CONFIG_CPM2 */
 561 #if defined(CONFIG_MPC512X)
 562         bd->bi_ipsfreq = gd->arch.ips_clk;
 563 #endif /* CONFIG_MPC512X */
 564 #if defined(CONFIG_MPC5xxx)
 565         bd->bi_ipbfreq = gd->arch.ipb_clk;
 566         bd->bi_pcifreq = gd->pci_clk;
 567 #endif /* CONFIG_MPC5xxx */
 568 #if defined(CONFIG_M68K) && defined(CONFIG_PCI)
 569         bd->bi_pcifreq = gd->pci_clk;
 570 #endif
 571 #if defined(CONFIG_EXTRA_CLOCK)
 572         bd->bi_inpfreq = gd->arch.inp_clk;      /* input Freq in Hz */
 573         bd->bi_vcofreq = gd->arch.vco_clk;      /* vco Freq in Hz */
 574         bd->bi_flbfreq = gd->arch.flb_clk;      /* flexbus Freq in Hz */
 575 #endif
 576
 577         return 0;
 578 }
 579 #endif
 580
 581 #ifdef CONFIG_POST
 582 static int init_post(void)
 583 {
 584         post_bootmode_init();
 585         post_run(NULL, POST_ROM | post_bootmode_get(0));
 586
 587         return 0;
 588 }
 589 #endif
 590
 591 static int reloc_fdt(void)
 592 {
 593 #ifndef CONFIG_OF_EMBED
 594         if (gd->flags & GD_FLG_SKIP_RELOC)
 595                 return 0;
 596         if (gd->new_fdt) {
 597                 memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size);
 598                 gd->fdt_blob = gd->new_fdt;
 599         }
 600 #endif
 601
 602         return 0;
 603 }
 604
 605 static int setup_reloc(void)
 606 {
 607         if (gd->flags & GD_FLG_SKIP_RELOC) {
 608                 debug("Skipping relocation due to flag\n");
 609                 return 0;
 610         }
 611
 612 #ifdef CONFIG_SYS_TEXT_BASE
 613         gd->reloc_off = gd->relocaddr - CONFIG_SYS_TEXT_BASE;
 614 #ifdef CONFIG_M68K
 615         /*
 616          * On all ColdFire arch cpu, monitor code starts always
 617          * just after the default vector table location, so at 0x400
 618          */
 619         gd->reloc_off = gd->relocaddr - (CONFIG_SYS_TEXT_BASE + 0x400);
 620 #endif
 621 #endif
 622         memcpy(gd->new_gd, (char *)gd, sizeof(gd_t));
 623
 624         debug("Relocation Offset is: %08lx\n", gd->reloc_off);
 625         debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n",
 626               gd->relocaddr, (ulong)map_to_sysmem(gd->new_gd),
 627               gd->start_addr_sp);
 628
 629         return 0;
 630 }
 631
 632 #ifdef CONFIG_OF_BOARD_FIXUP
 633 static int fix_fdt(void)
 634 {
 635         return board_fix_fdt((void *)gd->fdt_blob);
 636 }
 637 #endif
 638
 639 /* ARM calls relocate_code from its crt0.S */
 640 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
 641                 !CONFIG_IS_ENABLED(X86_64)
 642
 643 static int jump_to_copy(void)
 644 {
 645         if (gd->flags & GD_FLG_SKIP_RELOC)
 646                 return 0;
 647         /*
 648          * x86 is special, but in a nice way. It uses a trampoline which
 649          * enables the dcache if possible.
 650          *
 651          * For now, other archs use relocate_code(), which is implemented
 652          * similarly for all archs. When we do generic relocation, hopefully
 653          * we can make all archs enable the dcache prior to relocation.
 654          */
 655 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
 656         /*
 657          * SDRAM and console are now initialised. The final stack can now
 658          * be setup in SDRAM. Code execution will continue in Flash, but
 659          * with the stack in SDRAM and Global Data in temporary memory
 660          * (CPU cache)
 661          */
 662         arch_setup_gd(gd->new_gd);
 663         board_init_f_r_trampoline(gd->start_addr_sp);
 664 #else
 665         relocate_code(gd->start_addr_sp, gd->new_gd, gd->relocaddr);
 666 #endif
 667
 668         return 0;
 669 }
 670 #endif
 671
 672 /* Record the board_init_f() bootstage (after arch_cpu_init()) */
 673 static int mark_bootstage(void)
 674 {
 675         bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
 676
 677         return 0;
 678 }
 679
 680 static int initf_console_record(void)
 681 {
 682 #if defined(CONFIG_CONSOLE_RECORD) && defined(CONFIG_SYS_MALLOC_F_LEN)
 683         return console_record_init();
 684 #else
 685         return 0;
 686 #endif
 687 }
 688
 689 static int initf_dm(void)
 690 {
 691 #if defined(CONFIG_DM) && defined(CONFIG_SYS_MALLOC_F_LEN)
 692         int ret;
 693
 694         ret = dm_init_and_scan(true);
 695         if (ret)
 696                 return ret;
 697 #endif
 698 #ifdef CONFIG_TIMER_EARLY
 699         ret = dm_timer_init();
 700         if (ret)
 701                 return ret;
 702 #endif
 703
 704         return 0;
 705 }
 706
 707 /* Architecture-specific memory reservation */
 708 __weak int reserve_arch(void)
 709 {
 710         return 0;
 711 }
 712
 713 __weak int arch_cpu_init_dm(void)
 714 {
 715         return 0;
 716 }
 717
 718 static const init_fnc_t init_sequence_f[] = {
 719         setup_mon_len,
 720 #ifdef CONFIG_OF_CONTROL
 721         fdtdec_setup,
 722 #endif
 723 #ifdef CONFIG_TRACE
 724         trace_early_init,
 725 #endif
 726         initf_malloc,
 727         initf_console_record,
 728 #if defined(CONFIG_HAVE_FSP)
 729         arch_fsp_init,
 730 #endif
 731         arch_cpu_init,          /* basic arch cpu dependent setup */
 732         mach_cpu_init,          /* SoC/machine dependent CPU setup */
 733         initf_dm,
 734         arch_cpu_init_dm,
 735         mark_bootstage,         /* need timer, go after init dm */
 736 #if defined(CONFIG_BOARD_EARLY_INIT_F)
 737         board_early_init_f,
 738 #endif
 739 #if defined(CONFIG_PPC) || defined(CONFIG_SYS_FSL_CLK) || defined(CONFIG_M68K)
 740         /* get CPU and bus clocks according to the environment variable */
 741         get_clocks,             /* get CPU and bus clocks (etc.) */
 742 #endif
 743         timer_init,             /* initialize timer */
 744 #if defined(CONFIG_BOARD_POSTCLK_INIT)
 745         board_postclk_init,
 746 #endif
 747         env_init,               /* initialize environment */
 748         init_baud_rate,         /* initialze baudrate settings */
 749         serial_init,            /* serial communications setup */
 750         console_init_f,         /* stage 1 init of console */
 751         display_options,        /* say that we are here */
 752         display_text_info,      /* show debugging info if required */
 753 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_SH) || \
 754                 defined(CONFIG_X86)
 755         checkcpu,
 756 #endif
 757 #if defined(CONFIG_DISPLAY_CPUINFO)
 758         print_cpuinfo,          /* display cpu info (and speed) */
 759 #endif
 760 #if defined(CONFIG_DISPLAY_BOARDINFO)
 761         show_board_info,
 762 #endif
 763         INIT_FUNC_WATCHDOG_INIT
 764 #if defined(CONFIG_MISC_INIT_F)
 765         misc_init_f,
 766 #endif
 767         INIT_FUNC_WATCHDOG_RESET
 768 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
 769         init_func_i2c,
 770 #endif
 771 #if defined(CONFIG_HARD_SPI)
 772         init_func_spi,
 773 #endif
 774         announce_dram_init,
 775         dram_init,              /* configure available RAM banks */
 776 #ifdef CONFIG_POST
 777         post_init_f,
 778 #endif
 779         INIT_FUNC_WATCHDOG_RESET
 780 #if defined(CONFIG_SYS_DRAM_TEST)
 781         testdram,
 782 #endif /* CONFIG_SYS_DRAM_TEST */
 783         INIT_FUNC_WATCHDOG_RESET
 784
 785 #ifdef CONFIG_POST
 786         init_post,
 787 #endif
 788         INIT_FUNC_WATCHDOG_RESET
 789         /*
 790          * Now that we have DRAM mapped and working, we can
 791          * relocate the code and continue running from DRAM.
 792          *
 793          * Reserve memory at end of RAM for (top down in that order):
 794          *  - area that won't get touched by U-Boot and Linux (optional)
 795          *  - kernel log buffer
 796          *  - protected RAM
 797          *  - LCD framebuffer
 798          *  - monitor code
 799          *  - board info struct
 800          */
 801         setup_dest_addr,
 802 #if defined(CONFIG_LOGBUFFER)
 803         reserve_logbuffer,
 804 #endif
 805 #ifdef CONFIG_PRAM
 806         reserve_pram,
 807 #endif
 808         reserve_round_4k,
 809 #ifdef CONFIG_ARM
 810         reserve_mmu,
 811 #endif
 812         reserve_video,
 813         reserve_trace,
 814         reserve_uboot,
 815         reserve_malloc,
 816         reserve_board,
 817         setup_machine,
 818         reserve_global_data,
 819         reserve_fdt,
 820         reserve_arch,
 821         reserve_stacks,
 822         dram_init_banksize,
 823         show_dram_config,
 824 #if defined(CONFIG_M68K) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || \
 825         defined(CONFIG_SH)
 826         setup_board_part1,
 827 #endif
 828 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
 829         INIT_FUNC_WATCHDOG_RESET
 830         setup_board_part2,
 831 #endif
 832         display_new_sp,
 833 #ifdef CONFIG_SYS_EXTBDINFO
 834         setup_board_extra,
 835 #endif
 836 #ifdef CONFIG_OF_BOARD_FIXUP
 837         fix_fdt,
 838 #endif
 839         INIT_FUNC_WATCHDOG_RESET
 840         reloc_fdt,
 841         setup_reloc,
 842 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
 843         copy_uboot_to_ram,
 844         do_elf_reloc_fixups,
 845         clear_bss,
 846 #endif
 847 #if defined(CONFIG_XTENSA)
 848         clear_bss,
 849 #endif
 850 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
 851                 !CONFIG_IS_ENABLED(X86_64)
 852         jump_to_copy,
 853 #endif
 854         NULL,
 855 };
 856
 857 void board_init_f(ulong boot_flags)
 858 {
 859 #ifdef CONFIG_SYS_GENERIC_GLOBAL_DATA
 860         /*
 861          * For some architectures, global data is initialized and used before
 862          * calling this function. The data should be preserved. For others,
 863          * CONFIG_SYS_GENERIC_GLOBAL_DATA should be defined and use the stack
 864          * here to host global data until relocation.
 865          */
 866         gd_t data;
 867
 868         gd = &data;
 869
 870         /*
 871          * Clear global data before it is accessed at debug print
 872          * in initcall_run_list. Otherwise the debug print probably
 873          * get the wrong value of gd->have_console.
 874          */
 875         zero_global_data();
 876 #endif
 877
 878         gd->flags = boot_flags;
 879         gd->have_console = 0;
 880
 881         if (initcall_run_list(init_sequence_f))
 882                 hang();
 883
 884 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
 885                 !defined(CONFIG_EFI_APP) && !CONFIG_IS_ENABLED(X86_64)
 886         /* NOTREACHED - jump_to_copy() does not return */
 887         hang();
 888 #endif
 889 }
 890
 891 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
 892 /*
 893  * For now this code is only used on x86.
 894  *
 895  * init_sequence_f_r is the list of init functions which are run when
 896  * U-Boot is executing from Flash with a semi-limited 'C' environment.
 897  * The following limitations must be considered when implementing an
 898  * '_f_r' function:
 899  *  - 'static' variables are read-only
 900  *  - Global Data (gd->xxx) is read/write
 901  *
 902  * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if
 903  * supported).  It _should_, if possible, copy global data to RAM and
 904  * initialise the CPU caches (to speed up the relocation process)
 905  *
 906  * NOTE: At present only x86 uses this route, but it is intended that
 907  * all archs will move to this when generic relocation is implemented.
 908  */
 909 static const init_fnc_t init_sequence_f_r[] = {
 910 #if !CONFIG_IS_ENABLED(X86_64)
 911         init_cache_f_r,
 912 #endif
 913
 914         NULL,
 915 };
 916
 917 void board_init_f_r(void)
 918 {
 919         if (initcall_run_list(init_sequence_f_r))
 920                 hang();
 921
 922         /*
 923          * The pre-relocation drivers may be using memory that has now gone
 924          * away. Mark serial as unavailable - this will fall back to the debug
 925          * UART if available.
 926          */
 927         gd->flags &= ~GD_FLG_SERIAL_READY;
 928
 929         /*
 930          * U-Boot has been copied into SDRAM, the BSS has been cleared etc.
 931          * Transfer execution from Flash to RAM by calculating the address
 932          * of the in-RAM copy of board_init_r() and calling it
 933          */
 934         (board_init_r + gd->reloc_off)((gd_t *)gd, gd->relocaddr);
 935
 936         /* NOTREACHED - board_init_r() does not return */
 937         hang();
 938 }
 939 #endif /* CONFIG_X86 */