1 /* 2 * Copyright (c) 2011 The Chromium OS Authors. 3 * (C) Copyright 2002-2006 4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 5 * 6 * (C) Copyright 2002 7 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> 8 * Marius Groeger <mgroeger@sysgo.de> 9 * 10 * SPDX-License-Identifier: GPL-2.0+ 11 */ 12 13 #include <common.h> 14 #include <linux/compiler.h> 15 #include <version.h> 16 #include <environment.h> 17 #include <fdtdec.h> 18 #include <fs.h> 19 #if defined(CONFIG_CMD_IDE) 20 #include <ide.h> 21 #endif 22 #include <i2c.h> 23 #include <initcall.h> 24 #include <logbuff.h> 25 26 /* TODO: Can we move these into arch/ headers? */ 27 #ifdef CONFIG_8xx 28 #include <mpc8xx.h> 29 #endif 30 #ifdef CONFIG_5xx 31 #include <mpc5xx.h> 32 #endif 33 #ifdef CONFIG_MPC5xxx 34 #include <mpc5xxx.h> 35 #endif 36 37 #include <os.h> 38 #include <post.h> 39 #include <spi.h> 40 #include <trace.h> 41 #include <watchdog.h> 42 #include <asm/errno.h> 43 #include <asm/io.h> 44 #ifdef CONFIG_MP 45 #include <asm/mp.h> 46 #endif 47 #include <asm/sections.h> 48 #ifdef CONFIG_X86 49 #include <asm/init_helpers.h> 50 #include <asm/relocate.h> 51 #endif 52 #ifdef CONFIG_SANDBOX 53 #include <asm/state.h> 54 #endif 55 #include <linux/compiler.h> 56 57 /* 58 * Pointer to initial global data area 59 * 60 * Here we initialize it if needed. 61 */ 62 #ifdef XTRN_DECLARE_GLOBAL_DATA_PTR 63 #undef XTRN_DECLARE_GLOBAL_DATA_PTR 64 #define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */ 65 DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CONFIG_SYS_INIT_GD_ADDR); 66 #else 67 DECLARE_GLOBAL_DATA_PTR; 68 #endif 69 70 /* 71 * sjg: IMO this code should be 72 * refactored to a single function, something like: 73 * 74 * void led_set_state(enum led_colour_t colour, int on); 75 */ 76 /************************************************************************ 77 * Coloured LED functionality 78 ************************************************************************ 79 * May be supplied by boards if desired 80 */ 81 inline void __coloured_LED_init(void) {} 82 void coloured_LED_init(void) 83 __attribute__((weak, alias("__coloured_LED_init"))); 84 inline void __red_led_on(void) {} 85 void red_led_on(void) __attribute__((weak, alias("__red_led_on"))); 86 inline void __red_led_off(void) {} 87 void red_led_off(void) __attribute__((weak, alias("__red_led_off"))); 88 inline void __green_led_on(void) {} 89 void green_led_on(void) __attribute__((weak, alias("__green_led_on"))); 90 inline void __green_led_off(void) {} 91 void green_led_off(void) __attribute__((weak, alias("__green_led_off"))); 92 inline void __yellow_led_on(void) {} 93 void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on"))); 94 inline void __yellow_led_off(void) {} 95 void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off"))); 96 inline void __blue_led_on(void) {} 97 void blue_led_on(void) __attribute__((weak, alias("__blue_led_on"))); 98 inline void __blue_led_off(void) {} 99 void blue_led_off(void) __attribute__((weak, alias("__blue_led_off"))); 100 101 /* 102 * Why is gd allocated a register? Prior to reloc it might be better to 103 * just pass it around to each function in this file? 104 * 105 * After reloc one could argue that it is hardly used and doesn't need 106 * to be in a register. Or if it is it should perhaps hold pointers to all 107 * global data for all modules, so that post-reloc we can avoid the massive 108 * literal pool we get on ARM. Or perhaps just encourage each module to use 109 * a structure... 110 */ 111 112 /* 113 * Could the CONFIG_SPL_BUILD infection become a flag in gd? 114 */ 115 116 #if defined(CONFIG_WATCHDOG) 117 static int init_func_watchdog_init(void) 118 { 119 puts(" Watchdog enabled\n"); 120 WATCHDOG_RESET(); 121 122 return 0; 123 } 124 125 int init_func_watchdog_reset(void) 126 { 127 WATCHDOG_RESET(); 128 129 return 0; 130 } 131 #endif /* CONFIG_WATCHDOG */ 132 133 void __board_add_ram_info(int use_default) 134 { 135 /* please define platform specific board_add_ram_info() */ 136 } 137 138 void board_add_ram_info(int) 139 __attribute__ ((weak, alias("__board_add_ram_info"))); 140 141 static int init_baud_rate(void) 142 { 143 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE); 144 return 0; 145 } 146 147 static int display_text_info(void) 148 { 149 #ifndef CONFIG_SANDBOX 150 ulong bss_start, bss_end; 151 152 #ifdef CONFIG_SYS_SYM_OFFSETS 153 bss_start = _bss_start_ofs + _TEXT_BASE; 154 bss_end = _bss_end_ofs + _TEXT_BASE; 155 #else 156 bss_start = (ulong)&__bss_start; 157 bss_end = (ulong)&__bss_end; 158 #endif 159 debug("U-Boot code: %08X -> %08lX BSS: -> %08lX\n", 160 CONFIG_SYS_TEXT_BASE, bss_start, bss_end); 161 #endif 162 163 #ifdef CONFIG_MODEM_SUPPORT 164 debug("Modem Support enabled\n"); 165 #endif 166 #ifdef CONFIG_USE_IRQ 167 debug("IRQ Stack: %08lx\n", IRQ_STACK_START); 168 debug("FIQ Stack: %08lx\n", FIQ_STACK_START); 169 #endif 170 171 return 0; 172 } 173 174 static int announce_dram_init(void) 175 { 176 puts("DRAM: "); 177 return 0; 178 } 179 180 #ifdef CONFIG_PPC 181 static int init_func_ram(void) 182 { 183 #ifdef CONFIG_BOARD_TYPES 184 int board_type = gd->board_type; 185 #else 186 int board_type = 0; /* use dummy arg */ 187 #endif 188 189 gd->ram_size = initdram(board_type); 190 191 if (gd->ram_size > 0) 192 return 0; 193 194 puts("*** failed ***\n"); 195 return 1; 196 } 197 #endif 198 199 static int show_dram_config(void) 200 { 201 ulong size; 202 203 #ifdef CONFIG_NR_DRAM_BANKS 204 int i; 205 206 debug("\nRAM Configuration:\n"); 207 for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) { 208 size += gd->bd->bi_dram[i].size; 209 debug("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start); 210 #ifdef DEBUG 211 print_size(gd->bd->bi_dram[i].size, "\n"); 212 #endif 213 } 214 debug("\nDRAM: "); 215 #else 216 size = gd->ram_size; 217 #endif 218 219 print_size(size, ""); 220 board_add_ram_info(0); 221 putc('\n'); 222 223 return 0; 224 } 225 226 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 void dram_init_banksize(void) 235 __attribute__((weak, alias("__dram_init_banksize"))); 236 237 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C) 238 static int init_func_i2c(void) 239 { 240 puts("I2C: "); 241 #ifdef CONFIG_SYS_I2C 242 i2c_init_all(); 243 #else 244 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); 245 #endif 246 puts("ready\n"); 247 return 0; 248 } 249 #endif 250 251 #if defined(CONFIG_HARD_SPI) 252 static int init_func_spi(void) 253 { 254 puts("SPI: "); 255 spi_init(); 256 puts("ready\n"); 257 return 0; 258 } 259 #endif 260 261 __maybe_unused 262 static int zero_global_data(void) 263 { 264 memset((void *)gd, '\0', sizeof(gd_t)); 265 266 return 0; 267 } 268 269 static int setup_mon_len(void) 270 { 271 #ifdef CONFIG_SYS_SYM_OFFSETS 272 gd->mon_len = _bss_end_ofs; 273 #elif defined(CONFIG_SANDBOX) 274 gd->mon_len = (ulong)&_end - (ulong)_init; 275 #else 276 /* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */ 277 gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE; 278 #endif 279 return 0; 280 } 281 282 __weak int arch_cpu_init(void) 283 { 284 return 0; 285 } 286 287 #ifdef CONFIG_OF_HOSTFILE 288 289 #define CHECK(x) err = (x); if (err) goto failed; 290 291 /* Create an empty device tree blob */ 292 static int make_empty_fdt(void *fdt) 293 { 294 int err; 295 296 CHECK(fdt_create(fdt, 256)); 297 CHECK(fdt_finish_reservemap(fdt)); 298 CHECK(fdt_begin_node(fdt, "")); 299 CHECK(fdt_end_node(fdt)); 300 CHECK(fdt_finish(fdt)); 301 302 return 0; 303 failed: 304 printf("Unable to create empty FDT: %s\n", fdt_strerror(err)); 305 return -EACCES; 306 } 307 308 static int read_fdt_from_file(void) 309 { 310 struct sandbox_state *state = state_get_current(); 311 void *blob; 312 int size; 313 int err; 314 315 blob = map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR, 0); 316 if (!state->fdt_fname) { 317 err = make_empty_fdt(blob); 318 if (!err) 319 goto done; 320 return err; 321 } 322 err = fs_set_blk_dev("host", NULL, FS_TYPE_SANDBOX); 323 if (err) 324 return err; 325 size = fs_read(state->fdt_fname, CONFIG_SYS_FDT_LOAD_ADDR, 0, 0); 326 if (size < 0) 327 return -EIO; 328 329 done: 330 gd->fdt_blob = blob; 331 332 return 0; 333 } 334 #endif 335 336 #ifdef CONFIG_SANDBOX 337 static int setup_ram_buf(void) 338 { 339 struct sandbox_state *state = state_get_current(); 340 341 gd->arch.ram_buf = state->ram_buf; 342 gd->ram_size = state->ram_size; 343 344 return 0; 345 } 346 #endif 347 348 static int setup_fdt(void) 349 { 350 #ifdef CONFIG_OF_EMBED 351 /* Get a pointer to the FDT */ 352 gd->fdt_blob = __dtb_dt_begin; 353 #elif defined CONFIG_OF_SEPARATE 354 /* FDT is at end of image */ 355 # ifdef CONFIG_SYS_SYM_OFFSETS 356 gd->fdt_blob = (void *)(_end_ofs + CONFIG_SYS_TEXT_BASE); 357 # else 358 gd->fdt_blob = (ulong *)&_end; 359 # endif 360 #elif defined(CONFIG_OF_HOSTFILE) 361 if (read_fdt_from_file()) { 362 puts("Failed to read control FDT\n"); 363 return -1; 364 } 365 #endif 366 /* Allow the early environment to override the fdt address */ 367 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16, 368 (uintptr_t)gd->fdt_blob); 369 return 0; 370 } 371 372 /* Get the top of usable RAM */ 373 __weak ulong board_get_usable_ram_top(ulong total_size) 374 { 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 static int reserve_video(void) 497 { 498 /* reserve memory for video display (always full pages) */ 499 gd->relocaddr = video_setmem(gd->relocaddr); 500 gd->fb_base = gd->relocaddr; 501 502 return 0; 503 } 504 #endif 505 506 static int reserve_uboot(void) 507 { 508 /* 509 * reserve memory for U-Boot code, data & bss 510 * round down to next 4 kB limit 511 */ 512 gd->relocaddr -= gd->mon_len; 513 gd->relocaddr &= ~(4096 - 1); 514 #ifdef CONFIG_E500 515 /* round down to next 64 kB limit so that IVPR stays aligned */ 516 gd->relocaddr &= ~(65536 - 1); 517 #endif 518 519 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, 520 gd->relocaddr); 521 522 gd->start_addr_sp = gd->relocaddr; 523 524 return 0; 525 } 526 527 #ifndef CONFIG_SPL_BUILD 528 /* reserve memory for malloc() area */ 529 static int reserve_malloc(void) 530 { 531 gd->start_addr_sp = gd->start_addr_sp - TOTAL_MALLOC_LEN; 532 debug("Reserving %dk for malloc() at: %08lx\n", 533 TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp); 534 return 0; 535 } 536 537 /* (permanently) allocate a Board Info struct */ 538 static int reserve_board(void) 539 { 540 gd->start_addr_sp -= sizeof(bd_t); 541 gd->bd = (bd_t *)map_sysmem(gd->start_addr_sp, sizeof(bd_t)); 542 memset(gd->bd, '\0', sizeof(bd_t)); 543 debug("Reserving %zu Bytes for Board Info at: %08lx\n", 544 sizeof(bd_t), gd->start_addr_sp); 545 return 0; 546 } 547 #endif 548 549 static int setup_machine(void) 550 { 551 #ifdef CONFIG_MACH_TYPE 552 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */ 553 #endif 554 return 0; 555 } 556 557 static int reserve_global_data(void) 558 { 559 gd->start_addr_sp -= sizeof(gd_t); 560 gd->new_gd = (gd_t *)map_sysmem(gd->start_addr_sp, sizeof(gd_t)); 561 debug("Reserving %zu Bytes for Global Data at: %08lx\n", 562 sizeof(gd_t), gd->start_addr_sp); 563 return 0; 564 } 565 566 static int reserve_fdt(void) 567 { 568 /* 569 * If the device tree is sitting immediate above our image then we 570 * must relocate it. If it is embedded in the data section, then it 571 * will be relocated with other data. 572 */ 573 if (gd->fdt_blob) { 574 gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32); 575 576 gd->start_addr_sp -= gd->fdt_size; 577 gd->new_fdt = map_sysmem(gd->start_addr_sp, gd->fdt_size); 578 debug("Reserving %lu Bytes for FDT at: %08lx\n", 579 gd->fdt_size, gd->start_addr_sp); 580 } 581 582 return 0; 583 } 584 585 static int reserve_stacks(void) 586 { 587 #ifdef CONFIG_SPL_BUILD 588 # ifdef CONFIG_ARM 589 gd->start_addr_sp -= 128; /* leave 32 words for abort-stack */ 590 gd->irq_sp = gd->start_addr_sp; 591 # endif 592 #else 593 # ifdef CONFIG_PPC 594 ulong *s; 595 # endif 596 597 /* setup stack pointer for exceptions */ 598 gd->start_addr_sp -= 16; 599 gd->start_addr_sp &= ~0xf; 600 gd->irq_sp = gd->start_addr_sp; 601 602 /* 603 * Handle architecture-specific things here 604 * TODO(sjg@chromium.org): Perhaps create arch_reserve_stack() 605 * to handle this and put in arch/xxx/lib/stack.c 606 */ 607 # if defined(CONFIG_ARM) && !defined(CONFIG_ARM64) 608 # ifdef CONFIG_USE_IRQ 609 gd->start_addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ); 610 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n", 611 CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ, gd->start_addr_sp); 612 613 /* 8-byte alignment for ARM ABI compliance */ 614 gd->start_addr_sp &= ~0x07; 615 # endif 616 /* leave 3 words for abort-stack, plus 1 for alignment */ 617 gd->start_addr_sp -= 16; 618 # elif defined(CONFIG_PPC) 619 /* Clear initial stack frame */ 620 s = (ulong *) gd->start_addr_sp; 621 *s = 0; /* Terminate back chain */ 622 *++s = 0; /* NULL return address */ 623 # endif /* Architecture specific code */ 624 625 return 0; 626 #endif 627 } 628 629 static int display_new_sp(void) 630 { 631 debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp); 632 633 return 0; 634 } 635 636 #ifdef CONFIG_PPC 637 static int setup_board_part1(void) 638 { 639 bd_t *bd = gd->bd; 640 641 /* 642 * Save local variables to board info struct 643 */ 644 645 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of memory */ 646 bd->bi_memsize = gd->ram_size; /* size in bytes */ 647 648 #ifdef CONFIG_SYS_SRAM_BASE 649 bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; /* start of SRAM */ 650 bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; /* size of SRAM */ 651 #endif 652 653 #if defined(CONFIG_8xx) || defined(CONFIG_8260) || defined(CONFIG_5xx) || \ 654 defined(CONFIG_E500) || defined(CONFIG_MPC86xx) 655 bd->bi_immr_base = CONFIG_SYS_IMMR; /* base of IMMR register */ 656 #endif 657 #if defined(CONFIG_MPC5xxx) 658 bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */ 659 #endif 660 #if defined(CONFIG_MPC83xx) 661 bd->bi_immrbar = CONFIG_SYS_IMMR; 662 #endif 663 664 return 0; 665 } 666 667 static int setup_board_part2(void) 668 { 669 bd_t *bd = gd->bd; 670 671 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */ 672 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */ 673 #if defined(CONFIG_CPM2) 674 bd->bi_cpmfreq = gd->arch.cpm_clk; 675 bd->bi_brgfreq = gd->arch.brg_clk; 676 bd->bi_sccfreq = gd->arch.scc_clk; 677 bd->bi_vco = gd->arch.vco_out; 678 #endif /* CONFIG_CPM2 */ 679 #if defined(CONFIG_MPC512X) 680 bd->bi_ipsfreq = gd->arch.ips_clk; 681 #endif /* CONFIG_MPC512X */ 682 #if defined(CONFIG_MPC5xxx) 683 bd->bi_ipbfreq = gd->arch.ipb_clk; 684 bd->bi_pcifreq = gd->pci_clk; 685 #endif /* CONFIG_MPC5xxx */ 686 687 return 0; 688 } 689 #endif 690 691 #ifdef CONFIG_SYS_EXTBDINFO 692 static int setup_board_extra(void) 693 { 694 bd_t *bd = gd->bd; 695 696 strncpy((char *) bd->bi_s_version, "1.2", sizeof(bd->bi_s_version)); 697 strncpy((char *) bd->bi_r_version, U_BOOT_VERSION, 698 sizeof(bd->bi_r_version)); 699 700 bd->bi_procfreq = gd->cpu_clk; /* Processor Speed, In Hz */ 701 bd->bi_plb_busfreq = gd->bus_clk; 702 #if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \ 703 defined(CONFIG_440EP) || defined(CONFIG_440GR) || \ 704 defined(CONFIG_440EPX) || defined(CONFIG_440GRX) 705 bd->bi_pci_busfreq = get_PCI_freq(); 706 bd->bi_opbfreq = get_OPB_freq(); 707 #elif defined(CONFIG_XILINX_405) 708 bd->bi_pci_busfreq = get_PCI_freq(); 709 #endif 710 711 return 0; 712 } 713 #endif 714 715 #ifdef CONFIG_POST 716 static int init_post(void) 717 { 718 post_bootmode_init(); 719 post_run(NULL, POST_ROM | post_bootmode_get(0)); 720 721 return 0; 722 } 723 #endif 724 725 static int setup_baud_rate(void) 726 { 727 /* Ick, can we get rid of this line? */ 728 gd->bd->bi_baudrate = gd->baudrate; 729 730 return 0; 731 } 732 733 static int setup_dram_config(void) 734 { 735 /* Ram is board specific, so move it to board code ... */ 736 dram_init_banksize(); 737 738 return 0; 739 } 740 741 static int reloc_fdt(void) 742 { 743 if (gd->new_fdt) { 744 memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size); 745 gd->fdt_blob = gd->new_fdt; 746 } 747 748 return 0; 749 } 750 751 static int setup_reloc(void) 752 { 753 gd->reloc_off = gd->relocaddr - CONFIG_SYS_TEXT_BASE; 754 memcpy(gd->new_gd, (char *)gd, sizeof(gd_t)); 755 756 debug("Relocation Offset is: %08lx\n", gd->reloc_off); 757 debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n", 758 gd->relocaddr, (ulong)map_to_sysmem(gd->new_gd), 759 gd->start_addr_sp); 760 761 return 0; 762 } 763 764 /* ARM calls relocate_code from its crt0.S */ 765 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) 766 767 static int jump_to_copy(void) 768 { 769 /* 770 * x86 is special, but in a nice way. It uses a trampoline which 771 * enables the dcache if possible. 772 * 773 * For now, other archs use relocate_code(), which is implemented 774 * similarly for all archs. When we do generic relocation, hopefully 775 * we can make all archs enable the dcache prior to relocation. 776 */ 777 #ifdef CONFIG_X86 778 /* 779 * SDRAM and console are now initialised. The final stack can now 780 * be setup in SDRAM. Code execution will continue in Flash, but 781 * with the stack in SDRAM and Global Data in temporary memory 782 * (CPU cache) 783 */ 784 board_init_f_r_trampoline(gd->start_addr_sp); 785 #else 786 relocate_code(gd->start_addr_sp, gd->new_gd, gd->relocaddr); 787 #endif 788 789 return 0; 790 } 791 #endif 792 793 /* Record the board_init_f() bootstage (after arch_cpu_init()) */ 794 static int mark_bootstage(void) 795 { 796 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f"); 797 798 return 0; 799 } 800 801 static init_fnc_t init_sequence_f[] = { 802 #ifdef CONFIG_SANDBOX 803 setup_ram_buf, 804 #endif 805 setup_mon_len, 806 setup_fdt, 807 trace_early_init, 808 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx) 809 /* TODO: can this go into arch_cpu_init()? */ 810 probecpu, 811 #endif 812 arch_cpu_init, /* basic arch cpu dependent setup */ 813 #ifdef CONFIG_X86 814 cpu_init_f, /* TODO(sjg@chromium.org): remove */ 815 # ifdef CONFIG_OF_CONTROL 816 find_fdt, /* TODO(sjg@chromium.org): remove */ 817 # endif 818 #endif 819 mark_bootstage, 820 #ifdef CONFIG_OF_CONTROL 821 fdtdec_check_fdt, 822 #endif 823 #if defined(CONFIG_BOARD_EARLY_INIT_F) 824 board_early_init_f, 825 #endif 826 /* TODO: can any of this go into arch_cpu_init()? */ 827 #if defined(CONFIG_PPC) && !defined(CONFIG_8xx_CPUCLK_DEFAULT) 828 get_clocks, /* get CPU and bus clocks (etc.) */ 829 #if defined(CONFIG_TQM8xxL) && !defined(CONFIG_TQM866M) \ 830 && !defined(CONFIG_TQM885D) 831 adjust_sdram_tbs_8xx, 832 #endif 833 /* TODO: can we rename this to timer_init()? */ 834 init_timebase, 835 #endif 836 #ifdef CONFIG_ARM 837 timer_init, /* initialize timer */ 838 #endif 839 #ifdef CONFIG_SYS_ALLOC_DPRAM 840 #if !defined(CONFIG_CPM2) 841 dpram_init, 842 #endif 843 #endif 844 #if defined(CONFIG_BOARD_POSTCLK_INIT) 845 board_postclk_init, 846 #endif 847 #ifdef CONFIG_FSL_ESDHC 848 get_clocks, 849 #endif 850 env_init, /* initialize environment */ 851 #if defined(CONFIG_8xx_CPUCLK_DEFAULT) 852 /* get CPU and bus clocks according to the environment variable */ 853 get_clocks_866, 854 /* adjust sdram refresh rate according to the new clock */ 855 sdram_adjust_866, 856 init_timebase, 857 #endif 858 init_baud_rate, /* initialze baudrate settings */ 859 serial_init, /* serial communications setup */ 860 console_init_f, /* stage 1 init of console */ 861 #ifdef CONFIG_SANDBOX 862 sandbox_early_getopt_check, 863 #endif 864 #ifdef CONFIG_OF_CONTROL 865 fdtdec_prepare_fdt, 866 #endif 867 display_options, /* say that we are here */ 868 display_text_info, /* show debugging info if required */ 869 #if defined(CONFIG_8260) 870 prt_8260_rsr, 871 prt_8260_clks, 872 #endif /* CONFIG_8260 */ 873 #if defined(CONFIG_MPC83xx) 874 prt_83xx_rsr, 875 #endif 876 #ifdef CONFIG_PPC 877 checkcpu, 878 #endif 879 print_cpuinfo, /* display cpu info (and speed) */ 880 #if defined(CONFIG_MPC5xxx) 881 prt_mpc5xxx_clks, 882 #endif /* CONFIG_MPC5xxx */ 883 #if defined(CONFIG_DISPLAY_BOARDINFO) 884 checkboard, /* display board info */ 885 #endif 886 INIT_FUNC_WATCHDOG_INIT 887 #if defined(CONFIG_MISC_INIT_F) 888 misc_init_f, 889 #endif 890 INIT_FUNC_WATCHDOG_RESET 891 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C) 892 init_func_i2c, 893 #endif 894 #if defined(CONFIG_HARD_SPI) 895 init_func_spi, 896 #endif 897 #ifdef CONFIG_X86 898 dram_init_f, /* configure available RAM banks */ 899 calculate_relocation_address, 900 #endif 901 announce_dram_init, 902 /* TODO: unify all these dram functions? */ 903 #ifdef CONFIG_ARM 904 dram_init, /* configure available RAM banks */ 905 #endif 906 #ifdef CONFIG_PPC 907 init_func_ram, 908 #endif 909 #ifdef CONFIG_POST 910 post_init_f, 911 #endif 912 INIT_FUNC_WATCHDOG_RESET 913 #if defined(CONFIG_SYS_DRAM_TEST) 914 testdram, 915 #endif /* CONFIG_SYS_DRAM_TEST */ 916 INIT_FUNC_WATCHDOG_RESET 917 918 #ifdef CONFIG_POST 919 init_post, 920 #endif 921 INIT_FUNC_WATCHDOG_RESET 922 /* 923 * Now that we have DRAM mapped and working, we can 924 * relocate the code and continue running from DRAM. 925 * 926 * Reserve memory at end of RAM for (top down in that order): 927 * - area that won't get touched by U-Boot and Linux (optional) 928 * - kernel log buffer 929 * - protected RAM 930 * - LCD framebuffer 931 * - monitor code 932 * - board info struct 933 */ 934 setup_dest_addr, 935 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR) 936 reserve_logbuffer, 937 #endif 938 #ifdef CONFIG_PRAM 939 reserve_pram, 940 #endif 941 reserve_round_4k, 942 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \ 943 defined(CONFIG_ARM) 944 reserve_mmu, 945 #endif 946 #ifdef CONFIG_LCD 947 reserve_lcd, 948 #endif 949 reserve_trace, 950 /* TODO: Why the dependency on CONFIG_8xx? */ 951 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \ 952 && !defined(CONFIG_ARM) && !defined(CONFIG_X86) 953 reserve_video, 954 #endif 955 reserve_uboot, 956 #ifndef CONFIG_SPL_BUILD 957 reserve_malloc, 958 reserve_board, 959 #endif 960 setup_machine, 961 reserve_global_data, 962 reserve_fdt, 963 reserve_stacks, 964 setup_dram_config, 965 show_dram_config, 966 #ifdef CONFIG_PPC 967 setup_board_part1, 968 INIT_FUNC_WATCHDOG_RESET 969 setup_board_part2, 970 #endif 971 setup_baud_rate, 972 display_new_sp, 973 #ifdef CONFIG_SYS_EXTBDINFO 974 setup_board_extra, 975 #endif 976 INIT_FUNC_WATCHDOG_RESET 977 reloc_fdt, 978 setup_reloc, 979 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) 980 jump_to_copy, 981 #endif 982 NULL, 983 }; 984 985 void board_init_f(ulong boot_flags) 986 { 987 #ifndef CONFIG_X86 988 gd_t data; 989 990 gd = &data; 991 #endif 992 993 /* 994 * Clear global data before it is accessed at debug print 995 * in initcall_run_list. Otherwise the debug print probably 996 * get the wrong vaule of gd->have_console. 997 */ 998 #if !defined(CONFIG_CPM2) && !defined(CONFIG_MPC512X) && \ 999 !defined(CONFIG_MPC83xx) && !defined(CONFIG_MPC85xx) && \ 1000 !defined(CONFIG_MPC86xx) && !defined(CONFIG_X86) 1001 zero_global_data(); 1002 #endif 1003 1004 gd->flags = boot_flags; 1005 gd->have_console = 0; 1006 1007 if (initcall_run_list(init_sequence_f)) 1008 hang(); 1009 1010 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) 1011 /* NOTREACHED - jump_to_copy() does not return */ 1012 hang(); 1013 #endif 1014 } 1015 1016 #ifdef CONFIG_X86 1017 /* 1018 * For now this code is only used on x86. 1019 * 1020 * init_sequence_f_r is the list of init functions which are run when 1021 * U-Boot is executing from Flash with a semi-limited 'C' environment. 1022 * The following limitations must be considered when implementing an 1023 * '_f_r' function: 1024 * - 'static' variables are read-only 1025 * - Global Data (gd->xxx) is read/write 1026 * 1027 * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if 1028 * supported). It _should_, if possible, copy global data to RAM and 1029 * initialise the CPU caches (to speed up the relocation process) 1030 * 1031 * NOTE: At present only x86 uses this route, but it is intended that 1032 * all archs will move to this when generic relocation is implemented. 1033 */ 1034 static init_fnc_t init_sequence_f_r[] = { 1035 init_cache_f_r, 1036 copy_uboot_to_ram, 1037 clear_bss, 1038 do_elf_reloc_fixups, 1039 1040 NULL, 1041 }; 1042 1043 void board_init_f_r(void) 1044 { 1045 if (initcall_run_list(init_sequence_f_r)) 1046 hang(); 1047 1048 /* 1049 * U-Boot has been copied into SDRAM, the BSS has been cleared etc. 1050 * Transfer execution from Flash to RAM by calculating the address 1051 * of the in-RAM copy of board_init_r() and calling it 1052 */ 1053 (board_init_r + gd->reloc_off)(gd, gd->relocaddr); 1054 1055 /* NOTREACHED - board_init_r() does not return */ 1056 hang(); 1057 } 1058 #endif /* CONFIG_X86 */ 1059