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 27 /* TODO: Can we move these into arch/ headers? */ 28 #ifdef CONFIG_8xx 29 #include <mpc8xx.h> 30 #endif 31 #ifdef CONFIG_5xx 32 #include <mpc5xx.h> 33 #endif 34 #ifdef CONFIG_MPC5xxx 35 #include <mpc5xxx.h> 36 #endif 37 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500)) 38 #include <asm/mp.h> 39 #endif 40 41 #include <os.h> 42 #include <post.h> 43 #include <spi.h> 44 #include <status_led.h> 45 #include <trace.h> 46 #include <watchdog.h> 47 #include <asm/errno.h> 48 #include <asm/io.h> 49 #include <asm/sections.h> 50 #ifdef CONFIG_X86 51 #include <asm/init_helpers.h> 52 #include <asm/relocate.h> 53 #endif 54 #ifdef CONFIG_SANDBOX 55 #include <asm/state.h> 56 #endif 57 #include <dm/root.h> 58 #include <linux/compiler.h> 59 60 /* 61 * Pointer to initial global data area 62 * 63 * Here we initialize it if needed. 64 */ 65 #ifdef XTRN_DECLARE_GLOBAL_DATA_PTR 66 #undef XTRN_DECLARE_GLOBAL_DATA_PTR 67 #define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */ 68 DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CONFIG_SYS_INIT_GD_ADDR); 69 #else 70 DECLARE_GLOBAL_DATA_PTR; 71 #endif 72 73 /* 74 * sjg: IMO this code should be 75 * refactored to a single function, something like: 76 * 77 * void led_set_state(enum led_colour_t colour, int on); 78 */ 79 /************************************************************************ 80 * Coloured LED functionality 81 ************************************************************************ 82 * May be supplied by boards if desired 83 */ 84 __weak void coloured_LED_init(void) {} 85 __weak void red_led_on(void) {} 86 __weak void red_led_off(void) {} 87 __weak void green_led_on(void) {} 88 __weak void green_led_off(void) {} 89 __weak void yellow_led_on(void) {} 90 __weak void yellow_led_off(void) {} 91 __weak void blue_led_on(void) {} 92 __weak void blue_led_off(void) {} 93 94 /* 95 * Why is gd allocated a register? Prior to reloc it might be better to 96 * just pass it around to each function in this file? 97 * 98 * After reloc one could argue that it is hardly used and doesn't need 99 * to be in a register. Or if it is it should perhaps hold pointers to all 100 * global data for all modules, so that post-reloc we can avoid the massive 101 * literal pool we get on ARM. Or perhaps just encourage each module to use 102 * a structure... 103 */ 104 105 /* 106 * Could the CONFIG_SPL_BUILD infection become a flag in gd? 107 */ 108 109 #if defined(CONFIG_WATCHDOG) || defined(CONFIG_HW_WATCHDOG) 110 static int init_func_watchdog_init(void) 111 { 112 # if defined(CONFIG_HW_WATCHDOG) && (defined(CONFIG_BLACKFIN) || \ 113 defined(CONFIG_M68K) || defined(CONFIG_MICROBLAZE) || \ 114 defined(CONFIG_SH) || defined(CONFIG_AT91SAM9_WATCHDOG)) 115 hw_watchdog_init(); 116 # endif 117 puts(" Watchdog enabled\n"); 118 WATCHDOG_RESET(); 119 120 return 0; 121 } 122 123 int init_func_watchdog_reset(void) 124 { 125 WATCHDOG_RESET(); 126 127 return 0; 128 } 129 #endif /* CONFIG_WATCHDOG */ 130 131 __weak void board_add_ram_info(int use_default) 132 { 133 /* please define platform specific board_add_ram_info() */ 134 } 135 136 static int init_baud_rate(void) 137 { 138 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE); 139 return 0; 140 } 141 142 static int display_text_info(void) 143 { 144 #ifndef CONFIG_SANDBOX 145 ulong bss_start, bss_end, text_base; 146 147 bss_start = (ulong)&__bss_start; 148 bss_end = (ulong)&__bss_end; 149 150 #ifdef CONFIG_SYS_TEXT_BASE 151 text_base = CONFIG_SYS_TEXT_BASE; 152 #else 153 text_base = CONFIG_SYS_MONITOR_BASE; 154 #endif 155 156 debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n", 157 text_base, bss_start, bss_end); 158 #endif 159 160 #ifdef CONFIG_MODEM_SUPPORT 161 debug("Modem Support enabled\n"); 162 #endif 163 #ifdef CONFIG_USE_IRQ 164 debug("IRQ Stack: %08lx\n", IRQ_STACK_START); 165 debug("FIQ Stack: %08lx\n", FIQ_STACK_START); 166 #endif 167 168 return 0; 169 } 170 171 static int announce_dram_init(void) 172 { 173 puts("DRAM: "); 174 return 0; 175 } 176 177 #if defined(CONFIG_MIPS) || defined(CONFIG_PPC) 178 static int init_func_ram(void) 179 { 180 #ifdef CONFIG_BOARD_TYPES 181 int board_type = gd->board_type; 182 #else 183 int board_type = 0; /* use dummy arg */ 184 #endif 185 186 gd->ram_size = initdram(board_type); 187 188 if (gd->ram_size > 0) 189 return 0; 190 191 puts("*** failed ***\n"); 192 return 1; 193 } 194 #endif 195 196 static int show_dram_config(void) 197 { 198 unsigned long long size; 199 200 #ifdef CONFIG_NR_DRAM_BANKS 201 int i; 202 203 debug("\nRAM Configuration:\n"); 204 for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) { 205 size += gd->bd->bi_dram[i].size; 206 debug("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start); 207 #ifdef DEBUG 208 print_size(gd->bd->bi_dram[i].size, "\n"); 209 #endif 210 } 211 debug("\nDRAM: "); 212 #else 213 size = gd->ram_size; 214 #endif 215 216 print_size(size, ""); 217 board_add_ram_info(0); 218 putc('\n'); 219 220 return 0; 221 } 222 223 __weak void dram_init_banksize(void) 224 { 225 #if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE) 226 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE; 227 gd->bd->bi_dram[0].size = get_effective_memsize(); 228 #endif 229 } 230 231 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C) 232 static int init_func_i2c(void) 233 { 234 puts("I2C: "); 235 #ifdef CONFIG_SYS_I2C 236 i2c_init_all(); 237 #else 238 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); 239 #endif 240 puts("ready\n"); 241 return 0; 242 } 243 #endif 244 245 #if defined(CONFIG_HARD_SPI) 246 static int init_func_spi(void) 247 { 248 puts("SPI: "); 249 spi_init(); 250 puts("ready\n"); 251 return 0; 252 } 253 #endif 254 255 __maybe_unused 256 static int zero_global_data(void) 257 { 258 memset((void *)gd, '\0', sizeof(gd_t)); 259 260 return 0; 261 } 262 263 static int setup_mon_len(void) 264 { 265 #if defined(__ARM__) || defined(__MICROBLAZE__) 266 gd->mon_len = (ulong)&__bss_end - (ulong)_start; 267 #elif defined(CONFIG_SANDBOX) 268 gd->mon_len = (ulong)&_end - (ulong)_init; 269 #elif defined(CONFIG_BLACKFIN) || defined(CONFIG_NIOS2) 270 gd->mon_len = CONFIG_SYS_MONITOR_LEN; 271 #else 272 /* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */ 273 gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE; 274 #endif 275 return 0; 276 } 277 278 __weak int arch_cpu_init(void) 279 { 280 return 0; 281 } 282 283 #ifdef CONFIG_OF_HOSTFILE 284 285 static int read_fdt_from_file(void) 286 { 287 struct sandbox_state *state = state_get_current(); 288 const char *fname = state->fdt_fname; 289 void *blob; 290 loff_t size; 291 int err; 292 int fd; 293 294 blob = map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR, 0); 295 if (!state->fdt_fname) { 296 err = fdt_create_empty_tree(blob, 256); 297 if (!err) 298 goto done; 299 printf("Unable to create empty FDT: %s\n", fdt_strerror(err)); 300 return -EINVAL; 301 } 302 303 err = os_get_filesize(fname, &size); 304 if (err < 0) { 305 printf("Failed to file FDT file '%s'\n", fname); 306 return err; 307 } 308 fd = os_open(fname, OS_O_RDONLY); 309 if (fd < 0) { 310 printf("Failed to open FDT file '%s'\n", fname); 311 return -EACCES; 312 } 313 if (os_read(fd, blob, size) != size) { 314 os_close(fd); 315 return -EIO; 316 } 317 os_close(fd); 318 319 done: 320 gd->fdt_blob = blob; 321 322 return 0; 323 } 324 #endif 325 326 #ifdef CONFIG_SANDBOX 327 static int setup_ram_buf(void) 328 { 329 struct sandbox_state *state = state_get_current(); 330 331 gd->arch.ram_buf = state->ram_buf; 332 gd->ram_size = state->ram_size; 333 334 return 0; 335 } 336 #endif 337 338 static int setup_fdt(void) 339 { 340 #ifdef CONFIG_OF_CONTROL 341 # ifdef CONFIG_OF_EMBED 342 /* Get a pointer to the FDT */ 343 gd->fdt_blob = __dtb_dt_begin; 344 # elif defined CONFIG_OF_SEPARATE 345 /* FDT is at end of image */ 346 gd->fdt_blob = (ulong *)&_end; 347 # elif defined(CONFIG_OF_HOSTFILE) 348 if (read_fdt_from_file()) { 349 puts("Failed to read control FDT\n"); 350 return -1; 351 } 352 # endif 353 /* Allow the early environment to override the fdt address */ 354 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16, 355 (uintptr_t)gd->fdt_blob); 356 #endif 357 return 0; 358 } 359 360 /* Get the top of usable RAM */ 361 __weak ulong board_get_usable_ram_top(ulong total_size) 362 { 363 #ifdef CONFIG_SYS_SDRAM_BASE 364 /* 365 * Detect whether we have so much RAM it goes past the end of our 366 * 32-bit address space. If so, clip the usable RAM so it doesn't. 367 */ 368 if (gd->ram_top < CONFIG_SYS_SDRAM_BASE) 369 /* 370 * Will wrap back to top of 32-bit space when reservations 371 * are made. 372 */ 373 return 0; 374 #endif 375 return gd->ram_top; 376 } 377 378 static int setup_dest_addr(void) 379 { 380 debug("Monitor len: %08lX\n", gd->mon_len); 381 /* 382 * Ram is setup, size stored in gd !! 383 */ 384 debug("Ram size: %08lX\n", (ulong)gd->ram_size); 385 #if defined(CONFIG_SYS_MEM_TOP_HIDE) 386 /* 387 * Subtract specified amount of memory to hide so that it won't 388 * get "touched" at all by U-Boot. By fixing up gd->ram_size 389 * the Linux kernel should now get passed the now "corrected" 390 * memory size and won't touch it either. This should work 391 * for arch/ppc and arch/powerpc. Only Linux board ports in 392 * arch/powerpc with bootwrapper support, that recalculate the 393 * memory size from the SDRAM controller setup will have to 394 * get fixed. 395 */ 396 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE; 397 #endif 398 #ifdef CONFIG_SYS_SDRAM_BASE 399 gd->ram_top = CONFIG_SYS_SDRAM_BASE; 400 #endif 401 gd->ram_top += get_effective_memsize(); 402 gd->ram_top = board_get_usable_ram_top(gd->mon_len); 403 gd->relocaddr = gd->ram_top; 404 debug("Ram top: %08lX\n", (ulong)gd->ram_top); 405 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500)) 406 /* 407 * We need to make sure the location we intend to put secondary core 408 * boot code is reserved and not used by any part of u-boot 409 */ 410 if (gd->relocaddr > determine_mp_bootpg(NULL)) { 411 gd->relocaddr = determine_mp_bootpg(NULL); 412 debug("Reserving MP boot page to %08lx\n", gd->relocaddr); 413 } 414 #endif 415 return 0; 416 } 417 418 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR) 419 static int reserve_logbuffer(void) 420 { 421 /* reserve kernel log buffer */ 422 gd->relocaddr -= LOGBUFF_RESERVE; 423 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, 424 gd->relocaddr); 425 return 0; 426 } 427 #endif 428 429 #ifdef CONFIG_PRAM 430 /* reserve protected RAM */ 431 static int reserve_pram(void) 432 { 433 ulong reg; 434 435 reg = getenv_ulong("pram", 10, CONFIG_PRAM); 436 gd->relocaddr -= (reg << 10); /* size is in kB */ 437 debug("Reserving %ldk for protected RAM at %08lx\n", reg, 438 gd->relocaddr); 439 return 0; 440 } 441 #endif /* CONFIG_PRAM */ 442 443 /* Round memory pointer down to next 4 kB limit */ 444 static int reserve_round_4k(void) 445 { 446 gd->relocaddr &= ~(4096 - 1); 447 return 0; 448 } 449 450 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \ 451 defined(CONFIG_ARM) 452 static int reserve_mmu(void) 453 { 454 /* reserve TLB table */ 455 gd->arch.tlb_size = PGTABLE_SIZE; 456 gd->relocaddr -= gd->arch.tlb_size; 457 458 /* round down to next 64 kB limit */ 459 gd->relocaddr &= ~(0x10000 - 1); 460 461 gd->arch.tlb_addr = gd->relocaddr; 462 debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr, 463 gd->arch.tlb_addr + gd->arch.tlb_size); 464 return 0; 465 } 466 #endif 467 468 #ifdef CONFIG_LCD 469 static int reserve_lcd(void) 470 { 471 #ifdef CONFIG_FB_ADDR 472 gd->fb_base = CONFIG_FB_ADDR; 473 #else 474 /* reserve memory for LCD display (always full pages) */ 475 gd->relocaddr = lcd_setmem(gd->relocaddr); 476 gd->fb_base = gd->relocaddr; 477 #endif /* CONFIG_FB_ADDR */ 478 return 0; 479 } 480 #endif /* CONFIG_LCD */ 481 482 static int reserve_trace(void) 483 { 484 #ifdef CONFIG_TRACE 485 gd->relocaddr -= CONFIG_TRACE_BUFFER_SIZE; 486 gd->trace_buff = map_sysmem(gd->relocaddr, CONFIG_TRACE_BUFFER_SIZE); 487 debug("Reserving %dk for trace data at: %08lx\n", 488 CONFIG_TRACE_BUFFER_SIZE >> 10, gd->relocaddr); 489 #endif 490 491 return 0; 492 } 493 494 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) && \ 495 !defined(CONFIG_ARM) && !defined(CONFIG_X86) && \ 496 !defined(CONFIG_BLACKFIN) 497 static int reserve_video(void) 498 { 499 /* reserve memory for video display (always full pages) */ 500 gd->relocaddr = video_setmem(gd->relocaddr); 501 gd->fb_base = gd->relocaddr; 502 503 return 0; 504 } 505 #endif 506 507 static int reserve_uboot(void) 508 { 509 /* 510 * reserve memory for U-Boot code, data & bss 511 * round down to next 4 kB limit 512 */ 513 gd->relocaddr -= gd->mon_len; 514 gd->relocaddr &= ~(4096 - 1); 515 #ifdef CONFIG_E500 516 /* round down to next 64 kB limit so that IVPR stays aligned */ 517 gd->relocaddr &= ~(65536 - 1); 518 #endif 519 520 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, 521 gd->relocaddr); 522 523 gd->start_addr_sp = gd->relocaddr; 524 525 return 0; 526 } 527 528 #ifndef CONFIG_SPL_BUILD 529 /* reserve memory for malloc() area */ 530 static int reserve_malloc(void) 531 { 532 gd->start_addr_sp = gd->start_addr_sp - TOTAL_MALLOC_LEN; 533 debug("Reserving %dk for malloc() at: %08lx\n", 534 TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp); 535 return 0; 536 } 537 538 /* (permanently) allocate a Board Info struct */ 539 static int reserve_board(void) 540 { 541 if (!gd->bd) { 542 gd->start_addr_sp -= sizeof(bd_t); 543 gd->bd = (bd_t *)map_sysmem(gd->start_addr_sp, sizeof(bd_t)); 544 memset(gd->bd, '\0', sizeof(bd_t)); 545 debug("Reserving %zu Bytes for Board Info at: %08lx\n", 546 sizeof(bd_t), gd->start_addr_sp); 547 } 548 return 0; 549 } 550 #endif 551 552 static int setup_machine(void) 553 { 554 #ifdef CONFIG_MACH_TYPE 555 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */ 556 #endif 557 return 0; 558 } 559 560 static int reserve_global_data(void) 561 { 562 gd->start_addr_sp -= sizeof(gd_t); 563 gd->new_gd = (gd_t *)map_sysmem(gd->start_addr_sp, sizeof(gd_t)); 564 debug("Reserving %zu Bytes for Global Data at: %08lx\n", 565 sizeof(gd_t), gd->start_addr_sp); 566 return 0; 567 } 568 569 static int reserve_fdt(void) 570 { 571 /* 572 * If the device tree is sitting immediate above our image then we 573 * must relocate it. If it is embedded in the data section, then it 574 * will be relocated with other data. 575 */ 576 if (gd->fdt_blob) { 577 gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32); 578 579 gd->start_addr_sp -= gd->fdt_size; 580 gd->new_fdt = map_sysmem(gd->start_addr_sp, gd->fdt_size); 581 debug("Reserving %lu Bytes for FDT at: %08lx\n", 582 gd->fdt_size, gd->start_addr_sp); 583 } 584 585 return 0; 586 } 587 588 int arch_reserve_stacks(void) 589 { 590 return 0; 591 } 592 593 static int reserve_stacks(void) 594 { 595 /* make stack pointer 16-byte aligned */ 596 gd->start_addr_sp -= 16; 597 gd->start_addr_sp &= ~0xf; 598 599 /* 600 * let the architecture specific code tailor gd->start_addr_sp and 601 * gd->irq_sp 602 */ 603 return arch_reserve_stacks(); 604 } 605 606 static int display_new_sp(void) 607 { 608 debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp); 609 610 return 0; 611 } 612 613 #ifdef CONFIG_PPC 614 static int setup_board_part1(void) 615 { 616 bd_t *bd = gd->bd; 617 618 /* 619 * Save local variables to board info struct 620 */ 621 622 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of memory */ 623 bd->bi_memsize = gd->ram_size; /* size in bytes */ 624 625 #ifdef CONFIG_SYS_SRAM_BASE 626 bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; /* start of SRAM */ 627 bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; /* size of SRAM */ 628 #endif 629 630 #if defined(CONFIG_8xx) || defined(CONFIG_MPC8260) || defined(CONFIG_5xx) || \ 631 defined(CONFIG_E500) || defined(CONFIG_MPC86xx) 632 bd->bi_immr_base = CONFIG_SYS_IMMR; /* base of IMMR register */ 633 #endif 634 #if defined(CONFIG_MPC5xxx) 635 bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */ 636 #endif 637 #if defined(CONFIG_MPC83xx) 638 bd->bi_immrbar = CONFIG_SYS_IMMR; 639 #endif 640 641 return 0; 642 } 643 644 static int setup_board_part2(void) 645 { 646 bd_t *bd = gd->bd; 647 648 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */ 649 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */ 650 #if defined(CONFIG_CPM2) 651 bd->bi_cpmfreq = gd->arch.cpm_clk; 652 bd->bi_brgfreq = gd->arch.brg_clk; 653 bd->bi_sccfreq = gd->arch.scc_clk; 654 bd->bi_vco = gd->arch.vco_out; 655 #endif /* CONFIG_CPM2 */ 656 #if defined(CONFIG_MPC512X) 657 bd->bi_ipsfreq = gd->arch.ips_clk; 658 #endif /* CONFIG_MPC512X */ 659 #if defined(CONFIG_MPC5xxx) 660 bd->bi_ipbfreq = gd->arch.ipb_clk; 661 bd->bi_pcifreq = gd->pci_clk; 662 #endif /* CONFIG_MPC5xxx */ 663 664 return 0; 665 } 666 #endif 667 668 #ifdef CONFIG_SYS_EXTBDINFO 669 static int setup_board_extra(void) 670 { 671 bd_t *bd = gd->bd; 672 673 strncpy((char *) bd->bi_s_version, "1.2", sizeof(bd->bi_s_version)); 674 strncpy((char *) bd->bi_r_version, U_BOOT_VERSION, 675 sizeof(bd->bi_r_version)); 676 677 bd->bi_procfreq = gd->cpu_clk; /* Processor Speed, In Hz */ 678 bd->bi_plb_busfreq = gd->bus_clk; 679 #if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \ 680 defined(CONFIG_440EP) || defined(CONFIG_440GR) || \ 681 defined(CONFIG_440EPX) || defined(CONFIG_440GRX) 682 bd->bi_pci_busfreq = get_PCI_freq(); 683 bd->bi_opbfreq = get_OPB_freq(); 684 #elif defined(CONFIG_XILINX_405) 685 bd->bi_pci_busfreq = get_PCI_freq(); 686 #endif 687 688 return 0; 689 } 690 #endif 691 692 #ifdef CONFIG_POST 693 static int init_post(void) 694 { 695 post_bootmode_init(); 696 post_run(NULL, POST_ROM | post_bootmode_get(0)); 697 698 return 0; 699 } 700 #endif 701 702 static int setup_dram_config(void) 703 { 704 /* Ram is board specific, so move it to board code ... */ 705 dram_init_banksize(); 706 707 return 0; 708 } 709 710 static int reloc_fdt(void) 711 { 712 if (gd->new_fdt) { 713 memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size); 714 gd->fdt_blob = gd->new_fdt; 715 } 716 717 return 0; 718 } 719 720 static int setup_reloc(void) 721 { 722 #ifdef CONFIG_SYS_TEXT_BASE 723 gd->reloc_off = gd->relocaddr - CONFIG_SYS_TEXT_BASE; 724 #endif 725 memcpy(gd->new_gd, (char *)gd, sizeof(gd_t)); 726 727 debug("Relocation Offset is: %08lx\n", gd->reloc_off); 728 debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n", 729 gd->relocaddr, (ulong)map_to_sysmem(gd->new_gd), 730 gd->start_addr_sp); 731 732 return 0; 733 } 734 735 /* ARM calls relocate_code from its crt0.S */ 736 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) 737 738 static int jump_to_copy(void) 739 { 740 /* 741 * x86 is special, but in a nice way. It uses a trampoline which 742 * enables the dcache if possible. 743 * 744 * For now, other archs use relocate_code(), which is implemented 745 * similarly for all archs. When we do generic relocation, hopefully 746 * we can make all archs enable the dcache prior to relocation. 747 */ 748 #ifdef CONFIG_X86 749 /* 750 * SDRAM and console are now initialised. The final stack can now 751 * be setup in SDRAM. Code execution will continue in Flash, but 752 * with the stack in SDRAM and Global Data in temporary memory 753 * (CPU cache) 754 */ 755 board_init_f_r_trampoline(gd->start_addr_sp); 756 #else 757 relocate_code(gd->start_addr_sp, gd->new_gd, gd->relocaddr); 758 #endif 759 760 return 0; 761 } 762 #endif 763 764 /* Record the board_init_f() bootstage (after arch_cpu_init()) */ 765 static int mark_bootstage(void) 766 { 767 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f"); 768 769 return 0; 770 } 771 772 static int initf_malloc(void) 773 { 774 #ifdef CONFIG_SYS_MALLOC_F_LEN 775 assert(gd->malloc_base); /* Set up by crt0.S */ 776 gd->malloc_limit = gd->malloc_base + CONFIG_SYS_MALLOC_F_LEN; 777 gd->malloc_ptr = 0; 778 #endif 779 780 return 0; 781 } 782 783 static int initf_dm(void) 784 { 785 #if defined(CONFIG_DM) && defined(CONFIG_SYS_MALLOC_F_LEN) 786 int ret; 787 788 ret = dm_init_and_scan(true); 789 if (ret) 790 return ret; 791 #endif 792 793 return 0; 794 } 795 796 /* Architecture-specific memory reservation */ 797 __weak int reserve_arch(void) 798 { 799 return 0; 800 } 801 802 static init_fnc_t init_sequence_f[] = { 803 #ifdef CONFIG_SANDBOX 804 setup_ram_buf, 805 #endif 806 setup_mon_len, 807 setup_fdt, 808 #ifdef CONFIG_TRACE 809 trace_early_init, 810 #endif 811 initf_malloc, 812 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx) 813 /* TODO: can this go into arch_cpu_init()? */ 814 probecpu, 815 #endif 816 arch_cpu_init, /* basic arch cpu dependent setup */ 817 mark_bootstage, 818 #ifdef CONFIG_OF_CONTROL 819 fdtdec_check_fdt, 820 #endif 821 initf_dm, 822 #if defined(CONFIG_BOARD_EARLY_INIT_F) 823 board_early_init_f, 824 #endif 825 /* TODO: can any of this go into arch_cpu_init()? */ 826 #if defined(CONFIG_PPC) && !defined(CONFIG_8xx_CPUCLK_DEFAULT) 827 get_clocks, /* get CPU and bus clocks (etc.) */ 828 #if defined(CONFIG_TQM8xxL) && !defined(CONFIG_TQM866M) \ 829 && !defined(CONFIG_TQM885D) 830 adjust_sdram_tbs_8xx, 831 #endif 832 /* TODO: can we rename this to timer_init()? */ 833 init_timebase, 834 #endif 835 #if defined(CONFIG_ARM) || defined(CONFIG_MIPS) || defined(CONFIG_BLACKFIN) 836 timer_init, /* initialize timer */ 837 #endif 838 #ifdef CONFIG_SYS_ALLOC_DPRAM 839 #if !defined(CONFIG_CPM2) 840 dpram_init, 841 #endif 842 #endif 843 #if defined(CONFIG_BOARD_POSTCLK_INIT) 844 board_postclk_init, 845 #endif 846 #ifdef CONFIG_FSL_ESDHC 847 get_clocks, 848 #endif 849 env_init, /* initialize environment */ 850 #if defined(CONFIG_8xx_CPUCLK_DEFAULT) 851 /* get CPU and bus clocks according to the environment variable */ 852 get_clocks_866, 853 /* adjust sdram refresh rate according to the new clock */ 854 sdram_adjust_866, 855 init_timebase, 856 #endif 857 init_baud_rate, /* initialze baudrate settings */ 858 serial_init, /* serial communications setup */ 859 console_init_f, /* stage 1 init of console */ 860 #ifdef CONFIG_SANDBOX 861 sandbox_early_getopt_check, 862 #endif 863 #ifdef CONFIG_OF_CONTROL 864 fdtdec_prepare_fdt, 865 #endif 866 display_options, /* say that we are here */ 867 display_text_info, /* show debugging info if required */ 868 #if defined(CONFIG_MPC8260) 869 prt_8260_rsr, 870 prt_8260_clks, 871 #endif /* CONFIG_MPC8260 */ 872 #if defined(CONFIG_MPC83xx) 873 prt_83xx_rsr, 874 #endif 875 #ifdef CONFIG_PPC 876 checkcpu, 877 #endif 878 print_cpuinfo, /* display cpu info (and speed) */ 879 #if defined(CONFIG_MPC5xxx) 880 prt_mpc5xxx_clks, 881 #endif /* CONFIG_MPC5xxx */ 882 #if defined(CONFIG_DISPLAY_BOARDINFO) 883 show_board_info, 884 #endif 885 INIT_FUNC_WATCHDOG_INIT 886 #if defined(CONFIG_MISC_INIT_F) 887 misc_init_f, 888 #endif 889 INIT_FUNC_WATCHDOG_RESET 890 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C) 891 init_func_i2c, 892 #endif 893 #if defined(CONFIG_HARD_SPI) 894 init_func_spi, 895 #endif 896 announce_dram_init, 897 /* TODO: unify all these dram functions? */ 898 #if defined(CONFIG_ARM) || defined(CONFIG_X86) || defined(CONFIG_MICROBLAZE) || defined(CONFIG_AVR32) 899 dram_init, /* configure available RAM banks */ 900 #endif 901 #if defined(CONFIG_MIPS) || defined(CONFIG_PPC) 902 init_func_ram, 903 #endif 904 #ifdef CONFIG_POST 905 post_init_f, 906 #endif 907 INIT_FUNC_WATCHDOG_RESET 908 #if defined(CONFIG_SYS_DRAM_TEST) 909 testdram, 910 #endif /* CONFIG_SYS_DRAM_TEST */ 911 INIT_FUNC_WATCHDOG_RESET 912 913 #ifdef CONFIG_POST 914 init_post, 915 #endif 916 INIT_FUNC_WATCHDOG_RESET 917 /* 918 * Now that we have DRAM mapped and working, we can 919 * relocate the code and continue running from DRAM. 920 * 921 * Reserve memory at end of RAM for (top down in that order): 922 * - area that won't get touched by U-Boot and Linux (optional) 923 * - kernel log buffer 924 * - protected RAM 925 * - LCD framebuffer 926 * - monitor code 927 * - board info struct 928 */ 929 setup_dest_addr, 930 #if defined(CONFIG_BLACKFIN) || defined(CONFIG_NIOS2) 931 /* Blackfin u-boot monitor should be on top of the ram */ 932 reserve_uboot, 933 #endif 934 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR) 935 reserve_logbuffer, 936 #endif 937 #ifdef CONFIG_PRAM 938 reserve_pram, 939 #endif 940 reserve_round_4k, 941 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \ 942 defined(CONFIG_ARM) 943 reserve_mmu, 944 #endif 945 #ifdef CONFIG_LCD 946 reserve_lcd, 947 #endif 948 reserve_trace, 949 /* TODO: Why the dependency on CONFIG_8xx? */ 950 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) && \ 951 !defined(CONFIG_ARM) && !defined(CONFIG_X86) && \ 952 !defined(CONFIG_BLACKFIN) 953 reserve_video, 954 #endif 955 #if !defined(CONFIG_BLACKFIN) && !defined(CONFIG_NIOS2) 956 reserve_uboot, 957 #endif 958 #ifndef CONFIG_SPL_BUILD 959 reserve_malloc, 960 reserve_board, 961 #endif 962 setup_machine, 963 reserve_global_data, 964 reserve_fdt, 965 reserve_arch, 966 reserve_stacks, 967 setup_dram_config, 968 show_dram_config, 969 #ifdef CONFIG_PPC 970 setup_board_part1, 971 INIT_FUNC_WATCHDOG_RESET 972 setup_board_part2, 973 #endif 974 display_new_sp, 975 #ifdef CONFIG_SYS_EXTBDINFO 976 setup_board_extra, 977 #endif 978 INIT_FUNC_WATCHDOG_RESET 979 reloc_fdt, 980 setup_reloc, 981 #ifdef CONFIG_X86 982 copy_uboot_to_ram, 983 clear_bss, 984 do_elf_reloc_fixups, 985 #endif 986 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) 987 jump_to_copy, 988 #endif 989 NULL, 990 }; 991 992 void board_init_f(ulong boot_flags) 993 { 994 #ifdef CONFIG_SYS_GENERIC_GLOBAL_DATA 995 /* 996 * For some archtectures, global data is initialized and used before 997 * calling this function. The data should be preserved. For others, 998 * CONFIG_SYS_GENERIC_GLOBAL_DATA should be defined and use the stack 999 * here to host global data until relocation. 1000 */ 1001 gd_t data; 1002 1003 gd = &data; 1004 1005 /* 1006 * Clear global data before it is accessed at debug print 1007 * in initcall_run_list. Otherwise the debug print probably 1008 * get the wrong vaule of gd->have_console. 1009 */ 1010 zero_global_data(); 1011 #endif 1012 1013 gd->flags = boot_flags; 1014 gd->have_console = 0; 1015 1016 if (initcall_run_list(init_sequence_f)) 1017 hang(); 1018 1019 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) 1020 /* NOTREACHED - jump_to_copy() does not return */ 1021 hang(); 1022 #endif 1023 } 1024 1025 #ifdef CONFIG_X86 1026 /* 1027 * For now this code is only used on x86. 1028 * 1029 * init_sequence_f_r is the list of init functions which are run when 1030 * U-Boot is executing from Flash with a semi-limited 'C' environment. 1031 * The following limitations must be considered when implementing an 1032 * '_f_r' function: 1033 * - 'static' variables are read-only 1034 * - Global Data (gd->xxx) is read/write 1035 * 1036 * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if 1037 * supported). It _should_, if possible, copy global data to RAM and 1038 * initialise the CPU caches (to speed up the relocation process) 1039 * 1040 * NOTE: At present only x86 uses this route, but it is intended that 1041 * all archs will move to this when generic relocation is implemented. 1042 */ 1043 static init_fnc_t init_sequence_f_r[] = { 1044 init_cache_f_r, 1045 1046 NULL, 1047 }; 1048 1049 void board_init_f_r(void) 1050 { 1051 if (initcall_run_list(init_sequence_f_r)) 1052 hang(); 1053 1054 /* 1055 * U-Boot has been copied into SDRAM, the BSS has been cleared etc. 1056 * Transfer execution from Flash to RAM by calculating the address 1057 * of the in-RAM copy of board_init_r() and calling it 1058 */ 1059 (board_init_r + gd->reloc_off)(gd, gd->relocaddr); 1060 1061 /* NOTREACHED - board_init_r() does not return */ 1062 hang(); 1063 } 1064 #else 1065 ulong board_init_f_mem(ulong top) 1066 { 1067 /* Leave space for the stack we are running with now */ 1068 top -= 0x40; 1069 1070 top -= sizeof(struct global_data); 1071 top = ALIGN(top, 16); 1072 gd = (struct global_data *)top; 1073 memset((void *)gd, '\0', sizeof(*gd)); 1074 1075 #ifdef CONFIG_SYS_MALLOC_F_LEN 1076 top -= CONFIG_SYS_MALLOC_F_LEN; 1077 gd->malloc_base = top; 1078 #endif 1079 1080 return top; 1081 } 1082 #endif /* CONFIG_X86 */ 1083