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 bss_start = (ulong)&__bss_start; 153 bss_end = (ulong)&__bss_end; 154 155 debug("U-Boot code: %08X -> %08lX BSS: -> %08lX\n", 156 CONFIG_SYS_TEXT_BASE, bss_start, bss_end); 157 #endif 158 159 #ifdef CONFIG_MODEM_SUPPORT 160 debug("Modem Support enabled\n"); 161 #endif 162 #ifdef CONFIG_USE_IRQ 163 debug("IRQ Stack: %08lx\n", IRQ_STACK_START); 164 debug("FIQ Stack: %08lx\n", FIQ_STACK_START); 165 #endif 166 167 return 0; 168 } 169 170 static int announce_dram_init(void) 171 { 172 puts("DRAM: "); 173 return 0; 174 } 175 176 #ifdef CONFIG_PPC 177 static int init_func_ram(void) 178 { 179 #ifdef CONFIG_BOARD_TYPES 180 int board_type = gd->board_type; 181 #else 182 int board_type = 0; /* use dummy arg */ 183 #endif 184 185 gd->ram_size = initdram(board_type); 186 187 if (gd->ram_size > 0) 188 return 0; 189 190 puts("*** failed ***\n"); 191 return 1; 192 } 193 #endif 194 195 static int show_dram_config(void) 196 { 197 ulong size; 198 199 #ifdef CONFIG_NR_DRAM_BANKS 200 int i; 201 202 debug("\nRAM Configuration:\n"); 203 for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) { 204 size += gd->bd->bi_dram[i].size; 205 debug("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start); 206 #ifdef DEBUG 207 print_size(gd->bd->bi_dram[i].size, "\n"); 208 #endif 209 } 210 debug("\nDRAM: "); 211 #else 212 size = gd->ram_size; 213 #endif 214 215 print_size(size, ""); 216 board_add_ram_info(0); 217 putc('\n'); 218 219 return 0; 220 } 221 222 ulong get_effective_memsize(void) 223 { 224 #ifndef CONFIG_VERY_BIG_RAM 225 return gd->ram_size; 226 #else 227 /* limit stack to what we can reasonable map */ 228 return ((gd->ram_size > CONFIG_MAX_MEM_MAPPED) ? 229 CONFIG_MAX_MEM_MAPPED : gd->ram_size); 230 #endif 231 } 232 233 void __dram_init_banksize(void) 234 { 235 #if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE) 236 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE; 237 gd->bd->bi_dram[0].size = get_effective_memsize(); 238 #endif 239 } 240 241 void dram_init_banksize(void) 242 __attribute__((weak, alias("__dram_init_banksize"))); 243 244 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C) 245 static int init_func_i2c(void) 246 { 247 puts("I2C: "); 248 #ifdef CONFIG_SYS_I2C 249 i2c_init_all(); 250 #else 251 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); 252 #endif 253 puts("ready\n"); 254 return 0; 255 } 256 #endif 257 258 #if defined(CONFIG_HARD_SPI) 259 static int init_func_spi(void) 260 { 261 puts("SPI: "); 262 spi_init(); 263 puts("ready\n"); 264 return 0; 265 } 266 #endif 267 268 __maybe_unused 269 static int zero_global_data(void) 270 { 271 memset((void *)gd, '\0', sizeof(gd_t)); 272 273 return 0; 274 } 275 276 static int setup_mon_len(void) 277 { 278 #ifdef __ARM__ 279 gd->mon_len = (ulong)&__bss_end - (ulong)_start; 280 #elif defined(CONFIG_SANDBOX) 281 gd->mon_len = (ulong)&_end - (ulong)_init; 282 #else 283 /* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */ 284 gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE; 285 #endif 286 return 0; 287 } 288 289 __weak int arch_cpu_init(void) 290 { 291 return 0; 292 } 293 294 #ifdef CONFIG_OF_HOSTFILE 295 296 #define CHECK(x) err = (x); if (err) goto failed; 297 298 /* Create an empty device tree blob */ 299 static int make_empty_fdt(void *fdt) 300 { 301 int err; 302 303 CHECK(fdt_create(fdt, 256)); 304 CHECK(fdt_finish_reservemap(fdt)); 305 CHECK(fdt_begin_node(fdt, "")); 306 CHECK(fdt_end_node(fdt)); 307 CHECK(fdt_finish(fdt)); 308 309 return 0; 310 failed: 311 printf("Unable to create empty FDT: %s\n", fdt_strerror(err)); 312 return -EACCES; 313 } 314 315 static int read_fdt_from_file(void) 316 { 317 struct sandbox_state *state = state_get_current(); 318 void *blob; 319 int size; 320 int err; 321 322 blob = map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR, 0); 323 if (!state->fdt_fname) { 324 err = make_empty_fdt(blob); 325 if (!err) 326 goto done; 327 return err; 328 } 329 err = fs_set_blk_dev("host", NULL, FS_TYPE_SANDBOX); 330 if (err) 331 return err; 332 size = fs_read(state->fdt_fname, CONFIG_SYS_FDT_LOAD_ADDR, 0, 0); 333 if (size < 0) 334 return -EIO; 335 336 done: 337 gd->fdt_blob = blob; 338 339 return 0; 340 } 341 #endif 342 343 #ifdef CONFIG_SANDBOX 344 static int setup_ram_buf(void) 345 { 346 struct sandbox_state *state = state_get_current(); 347 348 gd->arch.ram_buf = state->ram_buf; 349 gd->ram_size = state->ram_size; 350 351 return 0; 352 } 353 #endif 354 355 static int setup_fdt(void) 356 { 357 #ifdef CONFIG_OF_EMBED 358 /* Get a pointer to the FDT */ 359 gd->fdt_blob = __dtb_dt_begin; 360 #elif defined CONFIG_OF_SEPARATE 361 /* FDT is at end of image */ 362 gd->fdt_blob = (ulong *)&_end; 363 #elif defined(CONFIG_OF_HOSTFILE) 364 if (read_fdt_from_file()) { 365 puts("Failed to read control FDT\n"); 366 return -1; 367 } 368 #endif 369 /* Allow the early environment to override the fdt address */ 370 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16, 371 (uintptr_t)gd->fdt_blob); 372 return 0; 373 } 374 375 /* Get the top of usable RAM */ 376 __weak ulong board_get_usable_ram_top(ulong total_size) 377 { 378 return gd->ram_top; 379 } 380 381 static int setup_dest_addr(void) 382 { 383 debug("Monitor len: %08lX\n", gd->mon_len); 384 /* 385 * Ram is setup, size stored in gd !! 386 */ 387 debug("Ram size: %08lX\n", (ulong)gd->ram_size); 388 #if defined(CONFIG_SYS_MEM_TOP_HIDE) 389 /* 390 * Subtract specified amount of memory to hide so that it won't 391 * get "touched" at all by U-Boot. By fixing up gd->ram_size 392 * the Linux kernel should now get passed the now "corrected" 393 * memory size and won't touch it either. This should work 394 * for arch/ppc and arch/powerpc. Only Linux board ports in 395 * arch/powerpc with bootwrapper support, that recalculate the 396 * memory size from the SDRAM controller setup will have to 397 * get fixed. 398 */ 399 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE; 400 #endif 401 #ifdef CONFIG_SYS_SDRAM_BASE 402 gd->ram_top = CONFIG_SYS_SDRAM_BASE; 403 #endif 404 gd->ram_top += get_effective_memsize(); 405 gd->ram_top = board_get_usable_ram_top(gd->mon_len); 406 gd->relocaddr = gd->ram_top; 407 debug("Ram top: %08lX\n", (ulong)gd->ram_top); 408 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500)) 409 /* 410 * We need to make sure the location we intend to put secondary core 411 * boot code is reserved and not used by any part of u-boot 412 */ 413 if (gd->relocaddr > determine_mp_bootpg(NULL)) { 414 gd->relocaddr = determine_mp_bootpg(NULL); 415 debug("Reserving MP boot page to %08lx\n", gd->relocaddr); 416 } 417 #endif 418 return 0; 419 } 420 421 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR) 422 static int reserve_logbuffer(void) 423 { 424 /* reserve kernel log buffer */ 425 gd->relocaddr -= LOGBUFF_RESERVE; 426 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, 427 gd->relocaddr); 428 return 0; 429 } 430 #endif 431 432 #ifdef CONFIG_PRAM 433 /* reserve protected RAM */ 434 static int reserve_pram(void) 435 { 436 ulong reg; 437 438 reg = getenv_ulong("pram", 10, CONFIG_PRAM); 439 gd->relocaddr -= (reg << 10); /* size is in kB */ 440 debug("Reserving %ldk for protected RAM at %08lx\n", reg, 441 gd->relocaddr); 442 return 0; 443 } 444 #endif /* CONFIG_PRAM */ 445 446 /* Round memory pointer down to next 4 kB limit */ 447 static int reserve_round_4k(void) 448 { 449 gd->relocaddr &= ~(4096 - 1); 450 return 0; 451 } 452 453 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \ 454 defined(CONFIG_ARM) 455 static int reserve_mmu(void) 456 { 457 /* reserve TLB table */ 458 gd->arch.tlb_size = PGTABLE_SIZE; 459 gd->relocaddr -= gd->arch.tlb_size; 460 461 /* round down to next 64 kB limit */ 462 gd->relocaddr &= ~(0x10000 - 1); 463 464 gd->arch.tlb_addr = gd->relocaddr; 465 debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr, 466 gd->arch.tlb_addr + gd->arch.tlb_size); 467 return 0; 468 } 469 #endif 470 471 #ifdef CONFIG_LCD 472 static int reserve_lcd(void) 473 { 474 #ifdef CONFIG_FB_ADDR 475 gd->fb_base = CONFIG_FB_ADDR; 476 #else 477 /* reserve memory for LCD display (always full pages) */ 478 gd->relocaddr = lcd_setmem(gd->relocaddr); 479 gd->fb_base = gd->relocaddr; 480 #endif /* CONFIG_FB_ADDR */ 481 return 0; 482 } 483 #endif /* CONFIG_LCD */ 484 485 static int reserve_trace(void) 486 { 487 #ifdef CONFIG_TRACE 488 gd->relocaddr -= CONFIG_TRACE_BUFFER_SIZE; 489 gd->trace_buff = map_sysmem(gd->relocaddr, CONFIG_TRACE_BUFFER_SIZE); 490 debug("Reserving %dk for trace data at: %08lx\n", 491 CONFIG_TRACE_BUFFER_SIZE >> 10, gd->relocaddr); 492 #endif 493 494 return 0; 495 } 496 497 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \ 498 && !defined(CONFIG_ARM) && !defined(CONFIG_X86) 499 static int reserve_video(void) 500 { 501 /* reserve memory for video display (always full pages) */ 502 gd->relocaddr = video_setmem(gd->relocaddr); 503 gd->fb_base = gd->relocaddr; 504 505 return 0; 506 } 507 #endif 508 509 static int reserve_uboot(void) 510 { 511 /* 512 * reserve memory for U-Boot code, data & bss 513 * round down to next 4 kB limit 514 */ 515 gd->relocaddr -= gd->mon_len; 516 gd->relocaddr &= ~(4096 - 1); 517 #ifdef CONFIG_E500 518 /* round down to next 64 kB limit so that IVPR stays aligned */ 519 gd->relocaddr &= ~(65536 - 1); 520 #endif 521 522 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, 523 gd->relocaddr); 524 525 gd->start_addr_sp = gd->relocaddr; 526 527 return 0; 528 } 529 530 #ifndef CONFIG_SPL_BUILD 531 /* reserve memory for malloc() area */ 532 static int reserve_malloc(void) 533 { 534 gd->start_addr_sp = gd->start_addr_sp - TOTAL_MALLOC_LEN; 535 debug("Reserving %dk for malloc() at: %08lx\n", 536 TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp); 537 return 0; 538 } 539 540 /* (permanently) allocate a Board Info struct */ 541 static int reserve_board(void) 542 { 543 gd->start_addr_sp -= sizeof(bd_t); 544 gd->bd = (bd_t *)map_sysmem(gd->start_addr_sp, sizeof(bd_t)); 545 memset(gd->bd, '\0', sizeof(bd_t)); 546 debug("Reserving %zu Bytes for Board Info at: %08lx\n", 547 sizeof(bd_t), gd->start_addr_sp); 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 static int reserve_stacks(void) 589 { 590 #ifdef CONFIG_SPL_BUILD 591 # ifdef CONFIG_ARM 592 gd->start_addr_sp -= 128; /* leave 32 words for abort-stack */ 593 gd->irq_sp = gd->start_addr_sp; 594 # endif 595 #else 596 # ifdef CONFIG_PPC 597 ulong *s; 598 # endif 599 600 /* setup stack pointer for exceptions */ 601 gd->start_addr_sp -= 16; 602 gd->start_addr_sp &= ~0xf; 603 gd->irq_sp = gd->start_addr_sp; 604 605 /* 606 * Handle architecture-specific things here 607 * TODO(sjg@chromium.org): Perhaps create arch_reserve_stack() 608 * to handle this and put in arch/xxx/lib/stack.c 609 */ 610 # if defined(CONFIG_ARM) && !defined(CONFIG_ARM64) 611 # ifdef CONFIG_USE_IRQ 612 gd->start_addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ); 613 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n", 614 CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ, gd->start_addr_sp); 615 616 /* 8-byte alignment for ARM ABI compliance */ 617 gd->start_addr_sp &= ~0x07; 618 # endif 619 /* leave 3 words for abort-stack, plus 1 for alignment */ 620 gd->start_addr_sp -= 16; 621 # elif defined(CONFIG_PPC) 622 /* Clear initial stack frame */ 623 s = (ulong *) gd->start_addr_sp; 624 *s = 0; /* Terminate back chain */ 625 *++s = 0; /* NULL return address */ 626 # endif /* Architecture specific code */ 627 628 return 0; 629 #endif 630 } 631 632 static int display_new_sp(void) 633 { 634 debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp); 635 636 return 0; 637 } 638 639 #ifdef CONFIG_PPC 640 static int setup_board_part1(void) 641 { 642 bd_t *bd = gd->bd; 643 644 /* 645 * Save local variables to board info struct 646 */ 647 648 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of memory */ 649 bd->bi_memsize = gd->ram_size; /* size in bytes */ 650 651 #ifdef CONFIG_SYS_SRAM_BASE 652 bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; /* start of SRAM */ 653 bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; /* size of SRAM */ 654 #endif 655 656 #if defined(CONFIG_8xx) || defined(CONFIG_8260) || defined(CONFIG_5xx) || \ 657 defined(CONFIG_E500) || defined(CONFIG_MPC86xx) 658 bd->bi_immr_base = CONFIG_SYS_IMMR; /* base of IMMR register */ 659 #endif 660 #if defined(CONFIG_MPC5xxx) 661 bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */ 662 #endif 663 #if defined(CONFIG_MPC83xx) 664 bd->bi_immrbar = CONFIG_SYS_IMMR; 665 #endif 666 667 return 0; 668 } 669 670 static int setup_board_part2(void) 671 { 672 bd_t *bd = gd->bd; 673 674 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */ 675 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */ 676 #if defined(CONFIG_CPM2) 677 bd->bi_cpmfreq = gd->arch.cpm_clk; 678 bd->bi_brgfreq = gd->arch.brg_clk; 679 bd->bi_sccfreq = gd->arch.scc_clk; 680 bd->bi_vco = gd->arch.vco_out; 681 #endif /* CONFIG_CPM2 */ 682 #if defined(CONFIG_MPC512X) 683 bd->bi_ipsfreq = gd->arch.ips_clk; 684 #endif /* CONFIG_MPC512X */ 685 #if defined(CONFIG_MPC5xxx) 686 bd->bi_ipbfreq = gd->arch.ipb_clk; 687 bd->bi_pcifreq = gd->pci_clk; 688 #endif /* CONFIG_MPC5xxx */ 689 690 return 0; 691 } 692 #endif 693 694 #ifdef CONFIG_SYS_EXTBDINFO 695 static int setup_board_extra(void) 696 { 697 bd_t *bd = gd->bd; 698 699 strncpy((char *) bd->bi_s_version, "1.2", sizeof(bd->bi_s_version)); 700 strncpy((char *) bd->bi_r_version, U_BOOT_VERSION, 701 sizeof(bd->bi_r_version)); 702 703 bd->bi_procfreq = gd->cpu_clk; /* Processor Speed, In Hz */ 704 bd->bi_plb_busfreq = gd->bus_clk; 705 #if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \ 706 defined(CONFIG_440EP) || defined(CONFIG_440GR) || \ 707 defined(CONFIG_440EPX) || defined(CONFIG_440GRX) 708 bd->bi_pci_busfreq = get_PCI_freq(); 709 bd->bi_opbfreq = get_OPB_freq(); 710 #elif defined(CONFIG_XILINX_405) 711 bd->bi_pci_busfreq = get_PCI_freq(); 712 #endif 713 714 return 0; 715 } 716 #endif 717 718 #ifdef CONFIG_POST 719 static int init_post(void) 720 { 721 post_bootmode_init(); 722 post_run(NULL, POST_ROM | post_bootmode_get(0)); 723 724 return 0; 725 } 726 #endif 727 728 static int setup_baud_rate(void) 729 { 730 /* Ick, can we get rid of this line? */ 731 gd->bd->bi_baudrate = gd->baudrate; 732 733 return 0; 734 } 735 736 static int setup_dram_config(void) 737 { 738 /* Ram is board specific, so move it to board code ... */ 739 dram_init_banksize(); 740 741 return 0; 742 } 743 744 static int reloc_fdt(void) 745 { 746 if (gd->new_fdt) { 747 memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size); 748 gd->fdt_blob = gd->new_fdt; 749 } 750 751 return 0; 752 } 753 754 static int setup_reloc(void) 755 { 756 gd->reloc_off = gd->relocaddr - CONFIG_SYS_TEXT_BASE; 757 memcpy(gd->new_gd, (char *)gd, sizeof(gd_t)); 758 759 debug("Relocation Offset is: %08lx\n", gd->reloc_off); 760 debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n", 761 gd->relocaddr, (ulong)map_to_sysmem(gd->new_gd), 762 gd->start_addr_sp); 763 764 return 0; 765 } 766 767 /* ARM calls relocate_code from its crt0.S */ 768 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) 769 770 static int jump_to_copy(void) 771 { 772 /* 773 * x86 is special, but in a nice way. It uses a trampoline which 774 * enables the dcache if possible. 775 * 776 * For now, other archs use relocate_code(), which is implemented 777 * similarly for all archs. When we do generic relocation, hopefully 778 * we can make all archs enable the dcache prior to relocation. 779 */ 780 #ifdef CONFIG_X86 781 /* 782 * SDRAM and console are now initialised. The final stack can now 783 * be setup in SDRAM. Code execution will continue in Flash, but 784 * with the stack in SDRAM and Global Data in temporary memory 785 * (CPU cache) 786 */ 787 board_init_f_r_trampoline(gd->start_addr_sp); 788 #else 789 relocate_code(gd->start_addr_sp, gd->new_gd, gd->relocaddr); 790 #endif 791 792 return 0; 793 } 794 #endif 795 796 /* Record the board_init_f() bootstage (after arch_cpu_init()) */ 797 static int mark_bootstage(void) 798 { 799 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f"); 800 801 return 0; 802 } 803 804 static init_fnc_t init_sequence_f[] = { 805 #ifdef CONFIG_SANDBOX 806 setup_ram_buf, 807 #endif 808 setup_mon_len, 809 setup_fdt, 810 trace_early_init, 811 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx) 812 /* TODO: can this go into arch_cpu_init()? */ 813 probecpu, 814 #endif 815 arch_cpu_init, /* basic arch cpu dependent setup */ 816 #ifdef CONFIG_X86 817 cpu_init_f, /* TODO(sjg@chromium.org): remove */ 818 # ifdef CONFIG_OF_CONTROL 819 find_fdt, /* TODO(sjg@chromium.org): remove */ 820 # endif 821 #endif 822 mark_bootstage, 823 #ifdef CONFIG_OF_CONTROL 824 fdtdec_check_fdt, 825 #endif 826 #if defined(CONFIG_BOARD_EARLY_INIT_F) 827 board_early_init_f, 828 #endif 829 /* TODO: can any of this go into arch_cpu_init()? */ 830 #if defined(CONFIG_PPC) && !defined(CONFIG_8xx_CPUCLK_DEFAULT) 831 get_clocks, /* get CPU and bus clocks (etc.) */ 832 #if defined(CONFIG_TQM8xxL) && !defined(CONFIG_TQM866M) \ 833 && !defined(CONFIG_TQM885D) 834 adjust_sdram_tbs_8xx, 835 #endif 836 /* TODO: can we rename this to timer_init()? */ 837 init_timebase, 838 #endif 839 #ifdef CONFIG_ARM 840 timer_init, /* initialize timer */ 841 #endif 842 #ifdef CONFIG_SYS_ALLOC_DPRAM 843 #if !defined(CONFIG_CPM2) 844 dpram_init, 845 #endif 846 #endif 847 #if defined(CONFIG_BOARD_POSTCLK_INIT) 848 board_postclk_init, 849 #endif 850 #ifdef CONFIG_FSL_ESDHC 851 get_clocks, 852 #endif 853 env_init, /* initialize environment */ 854 #if defined(CONFIG_8xx_CPUCLK_DEFAULT) 855 /* get CPU and bus clocks according to the environment variable */ 856 get_clocks_866, 857 /* adjust sdram refresh rate according to the new clock */ 858 sdram_adjust_866, 859 init_timebase, 860 #endif 861 init_baud_rate, /* initialze baudrate settings */ 862 serial_init, /* serial communications setup */ 863 console_init_f, /* stage 1 init of console */ 864 #ifdef CONFIG_SANDBOX 865 sandbox_early_getopt_check, 866 #endif 867 #ifdef CONFIG_OF_CONTROL 868 fdtdec_prepare_fdt, 869 #endif 870 display_options, /* say that we are here */ 871 display_text_info, /* show debugging info if required */ 872 #if defined(CONFIG_8260) 873 prt_8260_rsr, 874 prt_8260_clks, 875 #endif /* CONFIG_8260 */ 876 #if defined(CONFIG_MPC83xx) 877 prt_83xx_rsr, 878 #endif 879 #ifdef CONFIG_PPC 880 checkcpu, 881 #endif 882 print_cpuinfo, /* display cpu info (and speed) */ 883 #if defined(CONFIG_MPC5xxx) 884 prt_mpc5xxx_clks, 885 #endif /* CONFIG_MPC5xxx */ 886 #if defined(CONFIG_DISPLAY_BOARDINFO) 887 checkboard, /* display board info */ 888 #endif 889 INIT_FUNC_WATCHDOG_INIT 890 #if defined(CONFIG_MISC_INIT_F) 891 misc_init_f, 892 #endif 893 INIT_FUNC_WATCHDOG_RESET 894 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C) 895 init_func_i2c, 896 #endif 897 #if defined(CONFIG_HARD_SPI) 898 init_func_spi, 899 #endif 900 #ifdef CONFIG_X86 901 dram_init_f, /* configure available RAM banks */ 902 calculate_relocation_address, 903 #endif 904 announce_dram_init, 905 /* TODO: unify all these dram functions? */ 906 #ifdef CONFIG_ARM 907 dram_init, /* configure available RAM banks */ 908 #endif 909 #ifdef CONFIG_PPC 910 init_func_ram, 911 #endif 912 #ifdef CONFIG_POST 913 post_init_f, 914 #endif 915 INIT_FUNC_WATCHDOG_RESET 916 #if defined(CONFIG_SYS_DRAM_TEST) 917 testdram, 918 #endif /* CONFIG_SYS_DRAM_TEST */ 919 INIT_FUNC_WATCHDOG_RESET 920 921 #ifdef CONFIG_POST 922 init_post, 923 #endif 924 INIT_FUNC_WATCHDOG_RESET 925 /* 926 * Now that we have DRAM mapped and working, we can 927 * relocate the code and continue running from DRAM. 928 * 929 * Reserve memory at end of RAM for (top down in that order): 930 * - area that won't get touched by U-Boot and Linux (optional) 931 * - kernel log buffer 932 * - protected RAM 933 * - LCD framebuffer 934 * - monitor code 935 * - board info struct 936 */ 937 setup_dest_addr, 938 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR) 939 reserve_logbuffer, 940 #endif 941 #ifdef CONFIG_PRAM 942 reserve_pram, 943 #endif 944 reserve_round_4k, 945 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \ 946 defined(CONFIG_ARM) 947 reserve_mmu, 948 #endif 949 #ifdef CONFIG_LCD 950 reserve_lcd, 951 #endif 952 reserve_trace, 953 /* TODO: Why the dependency on CONFIG_8xx? */ 954 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \ 955 && !defined(CONFIG_ARM) && !defined(CONFIG_X86) 956 reserve_video, 957 #endif 958 reserve_uboot, 959 #ifndef CONFIG_SPL_BUILD 960 reserve_malloc, 961 reserve_board, 962 #endif 963 setup_machine, 964 reserve_global_data, 965 reserve_fdt, 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 setup_baud_rate, 975 display_new_sp, 976 #ifdef CONFIG_SYS_EXTBDINFO 977 setup_board_extra, 978 #endif 979 INIT_FUNC_WATCHDOG_RESET 980 reloc_fdt, 981 setup_reloc, 982 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) 983 jump_to_copy, 984 #endif 985 NULL, 986 }; 987 988 void board_init_f(ulong boot_flags) 989 { 990 #ifndef CONFIG_X86 991 gd_t data; 992 993 gd = &data; 994 #endif 995 996 /* 997 * Clear global data before it is accessed at debug print 998 * in initcall_run_list. Otherwise the debug print probably 999 * get the wrong vaule of gd->have_console. 1000 */ 1001 #if !defined(CONFIG_CPM2) && !defined(CONFIG_MPC512X) && \ 1002 !defined(CONFIG_MPC83xx) && !defined(CONFIG_MPC85xx) && \ 1003 !defined(CONFIG_MPC86xx) && !defined(CONFIG_X86) 1004 zero_global_data(); 1005 #endif 1006 1007 gd->flags = boot_flags; 1008 gd->have_console = 0; 1009 1010 if (initcall_run_list(init_sequence_f)) 1011 hang(); 1012 1013 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) 1014 /* NOTREACHED - jump_to_copy() does not return */ 1015 hang(); 1016 #endif 1017 } 1018 1019 #ifdef CONFIG_X86 1020 /* 1021 * For now this code is only used on x86. 1022 * 1023 * init_sequence_f_r is the list of init functions which are run when 1024 * U-Boot is executing from Flash with a semi-limited 'C' environment. 1025 * The following limitations must be considered when implementing an 1026 * '_f_r' function: 1027 * - 'static' variables are read-only 1028 * - Global Data (gd->xxx) is read/write 1029 * 1030 * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if 1031 * supported). It _should_, if possible, copy global data to RAM and 1032 * initialise the CPU caches (to speed up the relocation process) 1033 * 1034 * NOTE: At present only x86 uses this route, but it is intended that 1035 * all archs will move to this when generic relocation is implemented. 1036 */ 1037 static init_fnc_t init_sequence_f_r[] = { 1038 init_cache_f_r, 1039 copy_uboot_to_ram, 1040 clear_bss, 1041 do_elf_reloc_fixups, 1042 1043 NULL, 1044 }; 1045 1046 void board_init_f_r(void) 1047 { 1048 if (initcall_run_list(init_sequence_f_r)) 1049 hang(); 1050 1051 /* 1052 * U-Boot has been copied into SDRAM, the BSS has been cleared etc. 1053 * Transfer execution from Flash to RAM by calculating the address 1054 * of the in-RAM copy of board_init_r() and calling it 1055 */ 1056 (board_init_r + gd->reloc_off)(gd, gd->relocaddr); 1057 1058 /* NOTREACHED - board_init_r() does not return */ 1059 hang(); 1060 } 1061 #endif /* CONFIG_X86 */ 1062