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 * See file CREDITS for list of people who contributed to this 11 * project. 12 * 13 * This program is free software; you can redistribute it and/or 14 * modify it under the terms of the GNU General Public License as 15 * published by the Free Software Foundation; either version 2 of 16 * the License, or (at your option) any later version. 17 * 18 * This program is distributed in the hope that it will be useful, 19 * but WITHOUT ANY WARRANTY; without even the implied warranty of 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21 * GNU General Public License for more details. 22 * 23 * You should have received a copy of the GNU General Public License 24 * along with this program; if not, write to the Free Software 25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 26 * MA 02111-1307 USA 27 */ 28 29 #include <common.h> 30 #include <linux/compiler.h> 31 #include <version.h> 32 #include <environment.h> 33 #include <fdtdec.h> 34 #include <fs.h> 35 #if defined(CONFIG_CMD_IDE) 36 #include <ide.h> 37 #endif 38 #include <i2c.h> 39 #include <initcall.h> 40 #include <logbuff.h> 41 42 /* TODO: Can we move these into arch/ headers? */ 43 #ifdef CONFIG_8xx 44 #include <mpc8xx.h> 45 #endif 46 #ifdef CONFIG_5xx 47 #include <mpc5xx.h> 48 #endif 49 #ifdef CONFIG_MPC5xxx 50 #include <mpc5xxx.h> 51 #endif 52 53 #include <os.h> 54 #include <post.h> 55 #include <spi.h> 56 #include <watchdog.h> 57 #include <asm/errno.h> 58 #include <asm/io.h> 59 #ifdef CONFIG_MP 60 #include <asm/mp.h> 61 #endif 62 #include <asm/sections.h> 63 #ifdef CONFIG_X86 64 #include <asm/init_helpers.h> 65 #include <asm/relocate.h> 66 #endif 67 #ifdef CONFIG_SANDBOX 68 #include <asm/state.h> 69 #endif 70 #include <linux/compiler.h> 71 72 /* 73 * Pointer to initial global data area 74 * 75 * Here we initialize it if needed. 76 */ 77 #ifdef XTRN_DECLARE_GLOBAL_DATA_PTR 78 #undef XTRN_DECLARE_GLOBAL_DATA_PTR 79 #define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */ 80 DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CONFIG_SYS_INIT_GD_ADDR); 81 #else 82 DECLARE_GLOBAL_DATA_PTR; 83 #endif 84 85 /* 86 * sjg: IMO this code should be 87 * refactored to a single function, something like: 88 * 89 * void led_set_state(enum led_colour_t colour, int on); 90 */ 91 /************************************************************************ 92 * Coloured LED functionality 93 ************************************************************************ 94 * May be supplied by boards if desired 95 */ 96 inline void __coloured_LED_init(void) {} 97 void coloured_LED_init(void) 98 __attribute__((weak, alias("__coloured_LED_init"))); 99 inline void __red_led_on(void) {} 100 void red_led_on(void) __attribute__((weak, alias("__red_led_on"))); 101 inline void __red_led_off(void) {} 102 void red_led_off(void) __attribute__((weak, alias("__red_led_off"))); 103 inline void __green_led_on(void) {} 104 void green_led_on(void) __attribute__((weak, alias("__green_led_on"))); 105 inline void __green_led_off(void) {} 106 void green_led_off(void) __attribute__((weak, alias("__green_led_off"))); 107 inline void __yellow_led_on(void) {} 108 void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on"))); 109 inline void __yellow_led_off(void) {} 110 void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off"))); 111 inline void __blue_led_on(void) {} 112 void blue_led_on(void) __attribute__((weak, alias("__blue_led_on"))); 113 inline void __blue_led_off(void) {} 114 void blue_led_off(void) __attribute__((weak, alias("__blue_led_off"))); 115 116 /* 117 * Why is gd allocated a register? Prior to reloc it might be better to 118 * just pass it around to each function in this file? 119 * 120 * After reloc one could argue that it is hardly used and doesn't need 121 * to be in a register. Or if it is it should perhaps hold pointers to all 122 * global data for all modules, so that post-reloc we can avoid the massive 123 * literal pool we get on ARM. Or perhaps just encourage each module to use 124 * a structure... 125 */ 126 127 /* 128 * Could the CONFIG_SPL_BUILD infection become a flag in gd? 129 */ 130 131 #if defined(CONFIG_WATCHDOG) 132 static int init_func_watchdog_init(void) 133 { 134 puts(" Watchdog enabled\n"); 135 WATCHDOG_RESET(); 136 137 return 0; 138 } 139 140 int init_func_watchdog_reset(void) 141 { 142 WATCHDOG_RESET(); 143 144 return 0; 145 } 146 #endif /* CONFIG_WATCHDOG */ 147 148 void __board_add_ram_info(int use_default) 149 { 150 /* please define platform specific board_add_ram_info() */ 151 } 152 153 void board_add_ram_info(int) 154 __attribute__ ((weak, alias("__board_add_ram_info"))); 155 156 static int init_baud_rate(void) 157 { 158 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE); 159 return 0; 160 } 161 162 static int display_text_info(void) 163 { 164 #ifndef CONFIG_SANDBOX 165 ulong bss_start, bss_end; 166 167 #ifdef CONFIG_SYS_SYM_OFFSETS 168 bss_start = _bss_start_ofs + _TEXT_BASE; 169 bss_end = _bss_end_ofs + _TEXT_BASE; 170 #else 171 bss_start = (ulong)&__bss_start; 172 bss_end = (ulong)&__bss_end; 173 #endif 174 debug("U-Boot code: %08X -> %08lX BSS: -> %08lX\n", 175 CONFIG_SYS_TEXT_BASE, bss_start, bss_end); 176 #endif 177 178 #ifdef CONFIG_MODEM_SUPPORT 179 debug("Modem Support enabled\n"); 180 #endif 181 #ifdef CONFIG_USE_IRQ 182 debug("IRQ Stack: %08lx\n", IRQ_STACK_START); 183 debug("FIQ Stack: %08lx\n", FIQ_STACK_START); 184 #endif 185 186 return 0; 187 } 188 189 static int announce_dram_init(void) 190 { 191 puts("DRAM: "); 192 return 0; 193 } 194 195 #ifdef CONFIG_PPC 196 static int init_func_ram(void) 197 { 198 #ifdef CONFIG_BOARD_TYPES 199 int board_type = gd->board_type; 200 #else 201 int board_type = 0; /* use dummy arg */ 202 #endif 203 204 gd->ram_size = initdram(board_type); 205 206 if (gd->ram_size > 0) 207 return 0; 208 209 puts("*** failed ***\n"); 210 return 1; 211 } 212 #endif 213 214 static int show_dram_config(void) 215 { 216 ulong size; 217 218 #ifdef CONFIG_NR_DRAM_BANKS 219 int i; 220 221 debug("\nRAM Configuration:\n"); 222 for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) { 223 size += gd->bd->bi_dram[i].size; 224 debug("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start); 225 #ifdef DEBUG 226 print_size(gd->bd->bi_dram[i].size, "\n"); 227 #endif 228 } 229 debug("\nDRAM: "); 230 #else 231 size = gd->ram_size; 232 #endif 233 234 print_size(size, ""); 235 board_add_ram_info(0); 236 putc('\n'); 237 238 return 0; 239 } 240 241 ulong get_effective_memsize(void) 242 { 243 #ifndef CONFIG_VERY_BIG_RAM 244 return gd->ram_size; 245 #else 246 /* limit stack to what we can reasonable map */ 247 return ((gd->ram_size > CONFIG_MAX_MEM_MAPPED) ? 248 CONFIG_MAX_MEM_MAPPED : gd->ram_size); 249 #endif 250 } 251 252 void __dram_init_banksize(void) 253 { 254 #if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE) 255 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE; 256 gd->bd->bi_dram[0].size = get_effective_memsize(); 257 #endif 258 } 259 260 void dram_init_banksize(void) 261 __attribute__((weak, alias("__dram_init_banksize"))); 262 263 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) 264 static int init_func_i2c(void) 265 { 266 puts("I2C: "); 267 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); 268 puts("ready\n"); 269 return 0; 270 } 271 #endif 272 273 #if defined(CONFIG_HARD_SPI) 274 static int init_func_spi(void) 275 { 276 puts("SPI: "); 277 spi_init(); 278 puts("ready\n"); 279 return 0; 280 } 281 #endif 282 283 __maybe_unused 284 static int zero_global_data(void) 285 { 286 memset((void *)gd, '\0', sizeof(gd_t)); 287 288 return 0; 289 } 290 291 static int setup_mon_len(void) 292 { 293 #ifdef CONFIG_SYS_SYM_OFFSETS 294 gd->mon_len = _bss_end_ofs; 295 #elif defined(CONFIG_SANDBOX) 296 gd->mon_len = (ulong)&_end - (ulong)_init; 297 #else 298 /* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */ 299 gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE; 300 #endif 301 return 0; 302 } 303 304 __weak int arch_cpu_init(void) 305 { 306 return 0; 307 } 308 309 #ifdef CONFIG_OF_HOSTFILE 310 311 #define CHECK(x) err = (x); if (err) goto failed; 312 313 /* Create an empty device tree blob */ 314 static int make_empty_fdt(void *fdt) 315 { 316 int err; 317 318 CHECK(fdt_create(fdt, 256)); 319 CHECK(fdt_finish_reservemap(fdt)); 320 CHECK(fdt_begin_node(fdt, "")); 321 CHECK(fdt_end_node(fdt)); 322 CHECK(fdt_finish(fdt)); 323 324 return 0; 325 failed: 326 printf("Unable to create empty FDT: %s\n", fdt_strerror(err)); 327 return -EACCES; 328 } 329 330 static int read_fdt_from_file(void) 331 { 332 struct sandbox_state *state = state_get_current(); 333 void *blob; 334 int size; 335 int err; 336 337 blob = map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR, 0); 338 if (!state->fdt_fname) { 339 err = make_empty_fdt(blob); 340 if (!err) 341 goto done; 342 return err; 343 } 344 err = fs_set_blk_dev("host", NULL, FS_TYPE_SANDBOX); 345 if (err) 346 return err; 347 size = fs_read(state->fdt_fname, CONFIG_SYS_FDT_LOAD_ADDR, 0, 0); 348 if (size < 0) 349 return -EIO; 350 351 done: 352 gd->fdt_blob = blob; 353 354 return 0; 355 } 356 #endif 357 358 #ifdef CONFIG_SANDBOX 359 static int setup_ram_buf(void) 360 { 361 gd->arch.ram_buf = os_malloc(CONFIG_SYS_SDRAM_SIZE); 362 assert(gd->arch.ram_buf); 363 gd->ram_size = CONFIG_SYS_SDRAM_SIZE; 364 365 return 0; 366 } 367 #endif 368 369 static int setup_fdt(void) 370 { 371 #ifdef CONFIG_OF_EMBED 372 /* Get a pointer to the FDT */ 373 gd->fdt_blob = _binary_dt_dtb_start; 374 #elif defined CONFIG_OF_SEPARATE 375 /* FDT is at end of image */ 376 # ifdef CONFIG_SYS_SYM_OFFSETS 377 gd->fdt_blob = (void *)(_end_ofs + CONFIG_SYS_TEXT_BASE); 378 # else 379 gd->fdt_blob = (ulong *)&_end; 380 # endif 381 #elif defined(CONFIG_OF_HOSTFILE) 382 if (read_fdt_from_file()) { 383 puts("Failed to read control FDT\n"); 384 return -1; 385 } 386 #endif 387 /* Allow the early environment to override the fdt address */ 388 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16, 389 (uintptr_t)gd->fdt_blob); 390 return 0; 391 } 392 393 /* Get the top of usable RAM */ 394 __weak ulong board_get_usable_ram_top(ulong total_size) 395 { 396 return gd->ram_top; 397 } 398 399 static int setup_dest_addr(void) 400 { 401 debug("Monitor len: %08lX\n", gd->mon_len); 402 /* 403 * Ram is setup, size stored in gd !! 404 */ 405 debug("Ram size: %08lX\n", (ulong)gd->ram_size); 406 #if defined(CONFIG_SYS_MEM_TOP_HIDE) 407 /* 408 * Subtract specified amount of memory to hide so that it won't 409 * get "touched" at all by U-Boot. By fixing up gd->ram_size 410 * the Linux kernel should now get passed the now "corrected" 411 * memory size and won't touch it either. This should work 412 * for arch/ppc and arch/powerpc. Only Linux board ports in 413 * arch/powerpc with bootwrapper support, that recalculate the 414 * memory size from the SDRAM controller setup will have to 415 * get fixed. 416 */ 417 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE; 418 #endif 419 #ifdef CONFIG_SYS_SDRAM_BASE 420 gd->ram_top = CONFIG_SYS_SDRAM_BASE; 421 #endif 422 gd->ram_top += get_effective_memsize(); 423 gd->ram_top = board_get_usable_ram_top(gd->mon_len); 424 gd->dest_addr = gd->ram_top; 425 debug("Ram top: %08lX\n", (ulong)gd->ram_top); 426 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500)) 427 /* 428 * We need to make sure the location we intend to put secondary core 429 * boot code is reserved and not used by any part of u-boot 430 */ 431 if (gd->dest_addr > determine_mp_bootpg(NULL)) { 432 gd->dest_addr = determine_mp_bootpg(NULL); 433 debug("Reserving MP boot page to %08lx\n", gd->dest_addr); 434 } 435 #endif 436 gd->dest_addr_sp = gd->dest_addr; 437 return 0; 438 } 439 440 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR) 441 static int reserve_logbuffer(void) 442 { 443 /* reserve kernel log buffer */ 444 gd->dest_addr -= LOGBUFF_RESERVE; 445 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, 446 gd->dest_addr); 447 return 0; 448 } 449 #endif 450 451 #ifdef CONFIG_PRAM 452 /* reserve protected RAM */ 453 static int reserve_pram(void) 454 { 455 ulong reg; 456 457 reg = getenv_ulong("pram", 10, CONFIG_PRAM); 458 gd->dest_addr -= (reg << 10); /* size is in kB */ 459 debug("Reserving %ldk for protected RAM at %08lx\n", reg, 460 gd->dest_addr); 461 return 0; 462 } 463 #endif /* CONFIG_PRAM */ 464 465 /* Round memory pointer down to next 4 kB limit */ 466 static int reserve_round_4k(void) 467 { 468 gd->dest_addr &= ~(4096 - 1); 469 return 0; 470 } 471 472 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \ 473 defined(CONFIG_ARM) 474 static int reserve_mmu(void) 475 { 476 /* reserve TLB table */ 477 gd->arch.tlb_size = 4096 * 4; 478 gd->dest_addr -= gd->arch.tlb_size; 479 480 /* round down to next 64 kB limit */ 481 gd->dest_addr &= ~(0x10000 - 1); 482 483 gd->arch.tlb_addr = gd->dest_addr; 484 debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr, 485 gd->arch.tlb_addr + gd->arch.tlb_size); 486 return 0; 487 } 488 #endif 489 490 #ifdef CONFIG_LCD 491 static int reserve_lcd(void) 492 { 493 #ifdef CONFIG_FB_ADDR 494 gd->fb_base = CONFIG_FB_ADDR; 495 #else 496 /* reserve memory for LCD display (always full pages) */ 497 gd->dest_addr = lcd_setmem(gd->dest_addr); 498 gd->fb_base = gd->dest_addr; 499 #endif /* CONFIG_FB_ADDR */ 500 return 0; 501 } 502 #endif /* CONFIG_LCD */ 503 504 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \ 505 && !defined(CONFIG_ARM) && !defined(CONFIG_X86) 506 static int reserve_video(void) 507 { 508 /* reserve memory for video display (always full pages) */ 509 gd->dest_addr = video_setmem(gd->dest_addr); 510 gd->fb_base = gd->dest_addr; 511 512 return 0; 513 } 514 #endif 515 516 static int reserve_uboot(void) 517 { 518 /* 519 * reserve memory for U-Boot code, data & bss 520 * round down to next 4 kB limit 521 */ 522 gd->dest_addr -= gd->mon_len; 523 gd->dest_addr &= ~(4096 - 1); 524 #ifdef CONFIG_E500 525 /* round down to next 64 kB limit so that IVPR stays aligned */ 526 gd->dest_addr &= ~(65536 - 1); 527 #endif 528 529 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, 530 gd->dest_addr); 531 return 0; 532 } 533 534 #ifndef CONFIG_SPL_BUILD 535 /* reserve memory for malloc() area */ 536 static int reserve_malloc(void) 537 { 538 gd->dest_addr_sp = gd->dest_addr - TOTAL_MALLOC_LEN; 539 debug("Reserving %dk for malloc() at: %08lx\n", 540 TOTAL_MALLOC_LEN >> 10, gd->dest_addr_sp); 541 return 0; 542 } 543 544 /* (permanently) allocate a Board Info struct */ 545 static int reserve_board(void) 546 { 547 gd->dest_addr_sp -= sizeof(bd_t); 548 gd->bd = (bd_t *)map_sysmem(gd->dest_addr_sp, sizeof(bd_t)); 549 memset(gd->bd, '\0', sizeof(bd_t)); 550 debug("Reserving %zu Bytes for Board Info at: %08lx\n", 551 sizeof(bd_t), gd->dest_addr_sp); 552 return 0; 553 } 554 #endif 555 556 static int setup_machine(void) 557 { 558 #ifdef CONFIG_MACH_TYPE 559 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */ 560 #endif 561 return 0; 562 } 563 564 static int reserve_global_data(void) 565 { 566 gd->dest_addr_sp -= sizeof(gd_t); 567 gd->new_gd = (gd_t *)map_sysmem(gd->dest_addr_sp, sizeof(gd_t)); 568 debug("Reserving %zu Bytes for Global Data at: %08lx\n", 569 sizeof(gd_t), gd->dest_addr_sp); 570 return 0; 571 } 572 573 static int reserve_fdt(void) 574 { 575 /* 576 * If the device tree is sitting immediate above our image then we 577 * must relocate it. If it is embedded in the data section, then it 578 * will be relocated with other data. 579 */ 580 if (gd->fdt_blob) { 581 gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32); 582 583 gd->dest_addr_sp -= gd->fdt_size; 584 gd->new_fdt = map_sysmem(gd->dest_addr_sp, gd->fdt_size); 585 debug("Reserving %lu Bytes for FDT at: %08lx\n", 586 gd->fdt_size, gd->dest_addr_sp); 587 } 588 589 return 0; 590 } 591 592 static int reserve_stacks(void) 593 { 594 #ifdef CONFIG_SPL_BUILD 595 # ifdef CONFIG_ARM 596 gd->dest_addr_sp -= 128; /* leave 32 words for abort-stack */ 597 gd->irq_sp = gd->dest_addr_sp; 598 # endif 599 #else 600 # ifdef CONFIG_PPC 601 ulong *s; 602 # endif 603 604 /* setup stack pointer for exceptions */ 605 gd->dest_addr_sp -= 16; 606 gd->dest_addr_sp &= ~0xf; 607 gd->irq_sp = gd->dest_addr_sp; 608 609 /* 610 * Handle architecture-specific things here 611 * TODO(sjg@chromium.org): Perhaps create arch_reserve_stack() 612 * to handle this and put in arch/xxx/lib/stack.c 613 */ 614 # ifdef CONFIG_ARM 615 # ifdef CONFIG_USE_IRQ 616 gd->dest_addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ); 617 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n", 618 CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ, gd->dest_addr_sp); 619 620 /* 8-byte alignment for ARM ABI compliance */ 621 gd->dest_addr_sp &= ~0x07; 622 # endif 623 /* leave 3 words for abort-stack, plus 1 for alignment */ 624 gd->dest_addr_sp -= 16; 625 # elif defined(CONFIG_PPC) 626 /* Clear initial stack frame */ 627 s = (ulong *) gd->dest_addr_sp; 628 *s = 0; /* Terminate back chain */ 629 *++s = 0; /* NULL return address */ 630 # endif /* Architecture specific code */ 631 632 return 0; 633 #endif 634 } 635 636 static int display_new_sp(void) 637 { 638 debug("New Stack Pointer is: %08lx\n", gd->dest_addr_sp); 639 640 return 0; 641 } 642 643 #ifdef CONFIG_PPC 644 static int setup_board_part1(void) 645 { 646 bd_t *bd = gd->bd; 647 648 /* 649 * Save local variables to board info struct 650 */ 651 652 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of memory */ 653 bd->bi_memsize = gd->ram_size; /* size in bytes */ 654 655 #ifdef CONFIG_SYS_SRAM_BASE 656 bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; /* start of SRAM */ 657 bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; /* size of SRAM */ 658 #endif 659 660 #if defined(CONFIG_8xx) || defined(CONFIG_8260) || defined(CONFIG_5xx) || \ 661 defined(CONFIG_E500) || defined(CONFIG_MPC86xx) 662 bd->bi_immr_base = CONFIG_SYS_IMMR; /* base of IMMR register */ 663 #endif 664 #if defined(CONFIG_MPC5xxx) 665 bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */ 666 #endif 667 #if defined(CONFIG_MPC83xx) 668 bd->bi_immrbar = CONFIG_SYS_IMMR; 669 #endif 670 671 return 0; 672 } 673 674 static int setup_board_part2(void) 675 { 676 bd_t *bd = gd->bd; 677 678 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */ 679 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */ 680 #if defined(CONFIG_CPM2) 681 bd->bi_cpmfreq = gd->arch.cpm_clk; 682 bd->bi_brgfreq = gd->arch.brg_clk; 683 bd->bi_sccfreq = gd->arch.scc_clk; 684 bd->bi_vco = gd->arch.vco_out; 685 #endif /* CONFIG_CPM2 */ 686 #if defined(CONFIG_MPC512X) 687 bd->bi_ipsfreq = gd->arch.ips_clk; 688 #endif /* CONFIG_MPC512X */ 689 #if defined(CONFIG_MPC5xxx) 690 bd->bi_ipbfreq = gd->arch.ipb_clk; 691 bd->bi_pcifreq = gd->pci_clk; 692 #endif /* CONFIG_MPC5xxx */ 693 694 return 0; 695 } 696 #endif 697 698 #ifdef CONFIG_SYS_EXTBDINFO 699 static int setup_board_extra(void) 700 { 701 bd_t *bd = gd->bd; 702 703 strncpy((char *) bd->bi_s_version, "1.2", sizeof(bd->bi_s_version)); 704 strncpy((char *) bd->bi_r_version, U_BOOT_VERSION, 705 sizeof(bd->bi_r_version)); 706 707 bd->bi_procfreq = gd->cpu_clk; /* Processor Speed, In Hz */ 708 bd->bi_plb_busfreq = gd->bus_clk; 709 #if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \ 710 defined(CONFIG_440EP) || defined(CONFIG_440GR) || \ 711 defined(CONFIG_440EPX) || defined(CONFIG_440GRX) 712 bd->bi_pci_busfreq = get_PCI_freq(); 713 bd->bi_opbfreq = get_OPB_freq(); 714 #elif defined(CONFIG_XILINX_405) 715 bd->bi_pci_busfreq = get_PCI_freq(); 716 #endif 717 718 return 0; 719 } 720 #endif 721 722 #ifdef CONFIG_POST 723 static int init_post(void) 724 { 725 post_bootmode_init(); 726 post_run(NULL, POST_ROM | post_bootmode_get(0)); 727 728 return 0; 729 } 730 #endif 731 732 static int setup_baud_rate(void) 733 { 734 /* Ick, can we get rid of this line? */ 735 gd->bd->bi_baudrate = gd->baudrate; 736 737 return 0; 738 } 739 740 static int setup_dram_config(void) 741 { 742 /* Ram is board specific, so move it to board code ... */ 743 dram_init_banksize(); 744 745 return 0; 746 } 747 748 static int reloc_fdt(void) 749 { 750 if (gd->new_fdt) { 751 memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size); 752 gd->fdt_blob = gd->new_fdt; 753 } 754 755 return 0; 756 } 757 758 static int setup_reloc(void) 759 { 760 gd->relocaddr = gd->dest_addr; 761 gd->start_addr_sp = gd->dest_addr_sp; 762 gd->reloc_off = gd->dest_addr - CONFIG_SYS_TEXT_BASE; 763 memcpy(gd->new_gd, (char *)gd, sizeof(gd_t)); 764 765 debug("Relocation Offset is: %08lx\n", gd->reloc_off); 766 debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n", 767 gd->dest_addr, (ulong)map_to_sysmem(gd->new_gd), 768 gd->dest_addr_sp); 769 770 return 0; 771 } 772 773 /* ARM calls relocate_code from its crt0.S */ 774 #if !defined(CONFIG_ARM) 775 776 static int jump_to_copy(void) 777 { 778 /* 779 * x86 is special, but in a nice way. It uses a trampoline which 780 * enables the dcache if possible. 781 * 782 * For now, other archs use relocate_code(), which is implemented 783 * similarly for all archs. When we do generic relocation, hopefully 784 * we can make all archs enable the dcache prior to relocation. 785 */ 786 #ifdef CONFIG_X86 787 /* 788 * SDRAM and console are now initialised. The final stack can now 789 * be setup in SDRAM. Code execution will continue in Flash, but 790 * with the stack in SDRAM and Global Data in temporary memory 791 * (CPU cache) 792 */ 793 board_init_f_r_trampoline(gd->start_addr_sp); 794 #elif defined(CONFIG_SANDBOX) 795 board_init_r(gd->new_gd, 0); 796 #else 797 relocate_code(gd->dest_addr_sp, gd->new_gd, gd->dest_addr); 798 #endif 799 800 return 0; 801 } 802 #endif 803 804 /* Record the board_init_f() bootstage (after arch_cpu_init()) */ 805 static int mark_bootstage(void) 806 { 807 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f"); 808 809 return 0; 810 } 811 812 static init_fnc_t init_sequence_f[] = { 813 #if !defined(CONFIG_CPM2) && !defined(CONFIG_MPC512X) && \ 814 !defined(CONFIG_MPC83xx) && !defined(CONFIG_MPC85xx) && \ 815 !defined(CONFIG_MPC86xx) && !defined(CONFIG_X86) 816 zero_global_data, 817 #endif 818 #ifdef CONFIG_SANDBOX 819 setup_ram_buf, 820 #endif 821 setup_fdt, 822 setup_mon_len, 823 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx) 824 /* TODO: can this go into arch_cpu_init()? */ 825 probecpu, 826 #endif 827 arch_cpu_init, /* basic arch cpu dependent setup */ 828 #ifdef CONFIG_X86 829 cpu_init_f, /* TODO(sjg@chromium.org): remove */ 830 # ifdef CONFIG_OF_CONTROL 831 find_fdt, /* TODO(sjg@chromium.org): remove */ 832 # endif 833 #endif 834 mark_bootstage, 835 #ifdef CONFIG_OF_CONTROL 836 fdtdec_check_fdt, 837 #endif 838 #if defined(CONFIG_BOARD_EARLY_INIT_F) 839 board_early_init_f, 840 #endif 841 /* TODO: can any of this go into arch_cpu_init()? */ 842 #if defined(CONFIG_PPC) && !defined(CONFIG_8xx_CPUCLK_DEFAULT) 843 get_clocks, /* get CPU and bus clocks (etc.) */ 844 #if defined(CONFIG_TQM8xxL) && !defined(CONFIG_TQM866M) \ 845 && !defined(CONFIG_TQM885D) 846 adjust_sdram_tbs_8xx, 847 #endif 848 /* TODO: can we rename this to timer_init()? */ 849 init_timebase, 850 #endif 851 #ifdef CONFIG_ARM 852 timer_init, /* initialize timer */ 853 #endif 854 #ifdef CONFIG_BOARD_POSTCLK_INIT 855 board_postclk_init, 856 #endif 857 #ifdef CONFIG_FSL_ESDHC 858 get_clocks, 859 #endif 860 #ifdef CONFIG_SYS_ALLOC_DPRAM 861 #if !defined(CONFIG_CPM2) 862 dpram_init, 863 #endif 864 #endif 865 #if defined(CONFIG_BOARD_POSTCLK_INIT) 866 board_postclk_init, 867 #endif 868 env_init, /* initialize environment */ 869 #if defined(CONFIG_8xx_CPUCLK_DEFAULT) 870 /* get CPU and bus clocks according to the environment variable */ 871 get_clocks_866, 872 /* adjust sdram refresh rate according to the new clock */ 873 sdram_adjust_866, 874 init_timebase, 875 #endif 876 init_baud_rate, /* initialze baudrate settings */ 877 serial_init, /* serial communications setup */ 878 console_init_f, /* stage 1 init of console */ 879 #ifdef CONFIG_SANDBOX 880 sandbox_early_getopt_check, 881 #endif 882 #ifdef CONFIG_OF_CONTROL 883 fdtdec_prepare_fdt, 884 #endif 885 display_options, /* say that we are here */ 886 display_text_info, /* show debugging info if required */ 887 #if defined(CONFIG_8260) 888 prt_8260_rsr, 889 prt_8260_clks, 890 #endif /* CONFIG_8260 */ 891 #if defined(CONFIG_MPC83xx) 892 prt_83xx_rsr, 893 #endif 894 #ifdef CONFIG_PPC 895 checkcpu, 896 #endif 897 #if defined(CONFIG_DISPLAY_CPUINFO) 898 print_cpuinfo, /* display cpu info (and speed) */ 899 #endif 900 #if defined(CONFIG_MPC5xxx) 901 prt_mpc5xxx_clks, 902 #endif /* CONFIG_MPC5xxx */ 903 #if defined(CONFIG_DISPLAY_BOARDINFO) 904 checkboard, /* display board info */ 905 #endif 906 INIT_FUNC_WATCHDOG_INIT 907 #if defined(CONFIG_MISC_INIT_F) 908 misc_init_f, 909 #endif 910 INIT_FUNC_WATCHDOG_RESET 911 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) 912 init_func_i2c, 913 #endif 914 #if defined(CONFIG_HARD_SPI) 915 init_func_spi, 916 #endif 917 #ifdef CONFIG_X86 918 dram_init_f, /* configure available RAM banks */ 919 calculate_relocation_address, 920 #endif 921 announce_dram_init, 922 /* TODO: unify all these dram functions? */ 923 #ifdef CONFIG_ARM 924 dram_init, /* configure available RAM banks */ 925 #endif 926 #ifdef CONFIG_PPC 927 init_func_ram, 928 #endif 929 #ifdef CONFIG_POST 930 post_init_f, 931 #endif 932 INIT_FUNC_WATCHDOG_RESET 933 #if defined(CONFIG_SYS_DRAM_TEST) 934 testdram, 935 #endif /* CONFIG_SYS_DRAM_TEST */ 936 INIT_FUNC_WATCHDOG_RESET 937 938 #ifdef CONFIG_POST 939 init_post, 940 #endif 941 INIT_FUNC_WATCHDOG_RESET 942 /* 943 * Now that we have DRAM mapped and working, we can 944 * relocate the code and continue running from DRAM. 945 * 946 * Reserve memory at end of RAM for (top down in that order): 947 * - area that won't get touched by U-Boot and Linux (optional) 948 * - kernel log buffer 949 * - protected RAM 950 * - LCD framebuffer 951 * - monitor code 952 * - board info struct 953 */ 954 setup_dest_addr, 955 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR) 956 reserve_logbuffer, 957 #endif 958 #ifdef CONFIG_PRAM 959 reserve_pram, 960 #endif 961 reserve_round_4k, 962 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \ 963 defined(CONFIG_ARM) 964 reserve_mmu, 965 #endif 966 #ifdef CONFIG_LCD 967 reserve_lcd, 968 #endif 969 /* TODO: Why the dependency on CONFIG_8xx? */ 970 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \ 971 && !defined(CONFIG_ARM) && !defined(CONFIG_X86) 972 reserve_video, 973 #endif 974 reserve_uboot, 975 #ifndef CONFIG_SPL_BUILD 976 reserve_malloc, 977 reserve_board, 978 #endif 979 setup_machine, 980 reserve_global_data, 981 reserve_fdt, 982 reserve_stacks, 983 setup_dram_config, 984 show_dram_config, 985 #ifdef CONFIG_PPC 986 setup_board_part1, 987 INIT_FUNC_WATCHDOG_RESET 988 setup_board_part2, 989 #endif 990 setup_baud_rate, 991 display_new_sp, 992 #ifdef CONFIG_SYS_EXTBDINFO 993 setup_board_extra, 994 #endif 995 INIT_FUNC_WATCHDOG_RESET 996 reloc_fdt, 997 setup_reloc, 998 #ifndef CONFIG_ARM 999 jump_to_copy, 1000 #endif 1001 NULL, 1002 }; 1003 1004 void board_init_f(ulong boot_flags) 1005 { 1006 #ifndef CONFIG_X86 1007 gd_t data; 1008 1009 gd = &data; 1010 #endif 1011 1012 gd->flags = boot_flags; 1013 1014 if (initcall_run_list(init_sequence_f)) 1015 hang(); 1016 1017 #ifndef CONFIG_ARM 1018 /* NOTREACHED - jump_to_copy() does not return */ 1019 hang(); 1020 #endif 1021 } 1022 1023 #ifdef CONFIG_X86 1024 /* 1025 * For now this code is only used on x86. 1026 * 1027 * init_sequence_f_r is the list of init functions which are run when 1028 * U-Boot is executing from Flash with a semi-limited 'C' environment. 1029 * The following limitations must be considered when implementing an 1030 * '_f_r' function: 1031 * - 'static' variables are read-only 1032 * - Global Data (gd->xxx) is read/write 1033 * 1034 * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if 1035 * supported). It _should_, if possible, copy global data to RAM and 1036 * initialise the CPU caches (to speed up the relocation process) 1037 * 1038 * NOTE: At present only x86 uses this route, but it is intended that 1039 * all archs will move to this when generic relocation is implemented. 1040 */ 1041 static init_fnc_t init_sequence_f_r[] = { 1042 init_cache_f_r, 1043 copy_uboot_to_ram, 1044 clear_bss, 1045 do_elf_reloc_fixups, 1046 1047 NULL, 1048 }; 1049 1050 void board_init_f_r(void) 1051 { 1052 if (initcall_run_list(init_sequence_f_r)) 1053 hang(); 1054 1055 /* 1056 * U-Boot has been copied into SDRAM, the BSS has been cleared etc. 1057 * Transfer execution from Flash to RAM by calculating the address 1058 * of the in-RAM copy of board_init_r() and calling it 1059 */ 1060 (board_init_r + gd->reloc_off)(gd, gd->relocaddr); 1061 1062 /* NOTREACHED - board_init_r() does not return */ 1063 hang(); 1064 } 1065 #endif /* CONFIG_X86 */ 1066