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 <trace.h> 57 #include <watchdog.h> 58 #include <asm/errno.h> 59 #include <asm/io.h> 60 #ifdef CONFIG_MP 61 #include <asm/mp.h> 62 #endif 63 #include <asm/sections.h> 64 #ifdef CONFIG_X86 65 #include <asm/init_helpers.h> 66 #include <asm/relocate.h> 67 #endif 68 #ifdef CONFIG_SANDBOX 69 #include <asm/state.h> 70 #endif 71 #include <linux/compiler.h> 72 73 /* 74 * Pointer to initial global data area 75 * 76 * Here we initialize it if needed. 77 */ 78 #ifdef XTRN_DECLARE_GLOBAL_DATA_PTR 79 #undef XTRN_DECLARE_GLOBAL_DATA_PTR 80 #define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */ 81 DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CONFIG_SYS_INIT_GD_ADDR); 82 #else 83 DECLARE_GLOBAL_DATA_PTR; 84 #endif 85 86 /* 87 * sjg: IMO this code should be 88 * refactored to a single function, something like: 89 * 90 * void led_set_state(enum led_colour_t colour, int on); 91 */ 92 /************************************************************************ 93 * Coloured LED functionality 94 ************************************************************************ 95 * May be supplied by boards if desired 96 */ 97 inline void __coloured_LED_init(void) {} 98 void coloured_LED_init(void) 99 __attribute__((weak, alias("__coloured_LED_init"))); 100 inline void __red_led_on(void) {} 101 void red_led_on(void) __attribute__((weak, alias("__red_led_on"))); 102 inline void __red_led_off(void) {} 103 void red_led_off(void) __attribute__((weak, alias("__red_led_off"))); 104 inline void __green_led_on(void) {} 105 void green_led_on(void) __attribute__((weak, alias("__green_led_on"))); 106 inline void __green_led_off(void) {} 107 void green_led_off(void) __attribute__((weak, alias("__green_led_off"))); 108 inline void __yellow_led_on(void) {} 109 void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on"))); 110 inline void __yellow_led_off(void) {} 111 void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off"))); 112 inline void __blue_led_on(void) {} 113 void blue_led_on(void) __attribute__((weak, alias("__blue_led_on"))); 114 inline void __blue_led_off(void) {} 115 void blue_led_off(void) __attribute__((weak, alias("__blue_led_off"))); 116 117 /* 118 * Why is gd allocated a register? Prior to reloc it might be better to 119 * just pass it around to each function in this file? 120 * 121 * After reloc one could argue that it is hardly used and doesn't need 122 * to be in a register. Or if it is it should perhaps hold pointers to all 123 * global data for all modules, so that post-reloc we can avoid the massive 124 * literal pool we get on ARM. Or perhaps just encourage each module to use 125 * a structure... 126 */ 127 128 /* 129 * Could the CONFIG_SPL_BUILD infection become a flag in gd? 130 */ 131 132 #if defined(CONFIG_WATCHDOG) 133 static int init_func_watchdog_init(void) 134 { 135 puts(" Watchdog enabled\n"); 136 WATCHDOG_RESET(); 137 138 return 0; 139 } 140 141 int init_func_watchdog_reset(void) 142 { 143 WATCHDOG_RESET(); 144 145 return 0; 146 } 147 #endif /* CONFIG_WATCHDOG */ 148 149 void __board_add_ram_info(int use_default) 150 { 151 /* please define platform specific board_add_ram_info() */ 152 } 153 154 void board_add_ram_info(int) 155 __attribute__ ((weak, alias("__board_add_ram_info"))); 156 157 static int init_baud_rate(void) 158 { 159 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE); 160 return 0; 161 } 162 163 static int display_text_info(void) 164 { 165 #ifndef CONFIG_SANDBOX 166 ulong bss_start, bss_end; 167 168 #ifdef CONFIG_SYS_SYM_OFFSETS 169 bss_start = _bss_start_ofs + _TEXT_BASE; 170 bss_end = _bss_end_ofs + _TEXT_BASE; 171 #else 172 bss_start = (ulong)&__bss_start; 173 bss_end = (ulong)&__bss_end; 174 #endif 175 debug("U-Boot code: %08X -> %08lX BSS: -> %08lX\n", 176 CONFIG_SYS_TEXT_BASE, bss_start, bss_end); 177 #endif 178 179 #ifdef CONFIG_MODEM_SUPPORT 180 debug("Modem Support enabled\n"); 181 #endif 182 #ifdef CONFIG_USE_IRQ 183 debug("IRQ Stack: %08lx\n", IRQ_STACK_START); 184 debug("FIQ Stack: %08lx\n", FIQ_STACK_START); 185 #endif 186 187 return 0; 188 } 189 190 static int announce_dram_init(void) 191 { 192 puts("DRAM: "); 193 return 0; 194 } 195 196 #ifdef CONFIG_PPC 197 static int init_func_ram(void) 198 { 199 #ifdef CONFIG_BOARD_TYPES 200 int board_type = gd->board_type; 201 #else 202 int board_type = 0; /* use dummy arg */ 203 #endif 204 205 gd->ram_size = initdram(board_type); 206 207 if (gd->ram_size > 0) 208 return 0; 209 210 puts("*** failed ***\n"); 211 return 1; 212 } 213 #endif 214 215 static int show_dram_config(void) 216 { 217 ulong size; 218 219 #ifdef CONFIG_NR_DRAM_BANKS 220 int i; 221 222 debug("\nRAM Configuration:\n"); 223 for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) { 224 size += gd->bd->bi_dram[i].size; 225 debug("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start); 226 #ifdef DEBUG 227 print_size(gd->bd->bi_dram[i].size, "\n"); 228 #endif 229 } 230 debug("\nDRAM: "); 231 #else 232 size = gd->ram_size; 233 #endif 234 235 print_size(size, ""); 236 board_add_ram_info(0); 237 putc('\n'); 238 239 return 0; 240 } 241 242 ulong get_effective_memsize(void) 243 { 244 #ifndef CONFIG_VERY_BIG_RAM 245 return gd->ram_size; 246 #else 247 /* limit stack to what we can reasonable map */ 248 return ((gd->ram_size > CONFIG_MAX_MEM_MAPPED) ? 249 CONFIG_MAX_MEM_MAPPED : gd->ram_size); 250 #endif 251 } 252 253 void __dram_init_banksize(void) 254 { 255 #if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE) 256 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE; 257 gd->bd->bi_dram[0].size = get_effective_memsize(); 258 #endif 259 } 260 261 void dram_init_banksize(void) 262 __attribute__((weak, alias("__dram_init_banksize"))); 263 264 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) || \ 265 defined(CONFIG_SYS_I2C) 266 static int init_func_i2c(void) 267 { 268 puts("I2C: "); 269 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); 270 puts("ready\n"); 271 return 0; 272 } 273 #endif 274 275 #if defined(CONFIG_HARD_SPI) 276 static int init_func_spi(void) 277 { 278 puts("SPI: "); 279 spi_init(); 280 puts("ready\n"); 281 return 0; 282 } 283 #endif 284 285 __maybe_unused 286 static int zero_global_data(void) 287 { 288 memset((void *)gd, '\0', sizeof(gd_t)); 289 290 return 0; 291 } 292 293 static int setup_mon_len(void) 294 { 295 #ifdef CONFIG_SYS_SYM_OFFSETS 296 gd->mon_len = _bss_end_ofs; 297 #elif defined(CONFIG_SANDBOX) 298 gd->mon_len = (ulong)&_end - (ulong)_init; 299 #else 300 /* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */ 301 gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE; 302 #endif 303 return 0; 304 } 305 306 __weak int arch_cpu_init(void) 307 { 308 return 0; 309 } 310 311 #ifdef CONFIG_OF_HOSTFILE 312 313 #define CHECK(x) err = (x); if (err) goto failed; 314 315 /* Create an empty device tree blob */ 316 static int make_empty_fdt(void *fdt) 317 { 318 int err; 319 320 CHECK(fdt_create(fdt, 256)); 321 CHECK(fdt_finish_reservemap(fdt)); 322 CHECK(fdt_begin_node(fdt, "")); 323 CHECK(fdt_end_node(fdt)); 324 CHECK(fdt_finish(fdt)); 325 326 return 0; 327 failed: 328 printf("Unable to create empty FDT: %s\n", fdt_strerror(err)); 329 return -EACCES; 330 } 331 332 static int read_fdt_from_file(void) 333 { 334 struct sandbox_state *state = state_get_current(); 335 void *blob; 336 int size; 337 int err; 338 339 blob = map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR, 0); 340 if (!state->fdt_fname) { 341 err = make_empty_fdt(blob); 342 if (!err) 343 goto done; 344 return err; 345 } 346 err = fs_set_blk_dev("host", NULL, FS_TYPE_SANDBOX); 347 if (err) 348 return err; 349 size = fs_read(state->fdt_fname, CONFIG_SYS_FDT_LOAD_ADDR, 0, 0); 350 if (size < 0) 351 return -EIO; 352 353 done: 354 gd->fdt_blob = blob; 355 356 return 0; 357 } 358 #endif 359 360 #ifdef CONFIG_SANDBOX 361 static int setup_ram_buf(void) 362 { 363 gd->arch.ram_buf = os_malloc(CONFIG_SYS_SDRAM_SIZE); 364 assert(gd->arch.ram_buf); 365 gd->ram_size = CONFIG_SYS_SDRAM_SIZE; 366 367 return 0; 368 } 369 #endif 370 371 static int setup_fdt(void) 372 { 373 #ifdef CONFIG_OF_EMBED 374 /* Get a pointer to the FDT */ 375 gd->fdt_blob = _binary_dt_dtb_start; 376 #elif defined CONFIG_OF_SEPARATE 377 /* FDT is at end of image */ 378 # ifdef CONFIG_SYS_SYM_OFFSETS 379 gd->fdt_blob = (void *)(_end_ofs + CONFIG_SYS_TEXT_BASE); 380 # else 381 gd->fdt_blob = (ulong *)&_end; 382 # endif 383 #elif defined(CONFIG_OF_HOSTFILE) 384 if (read_fdt_from_file()) { 385 puts("Failed to read control FDT\n"); 386 return -1; 387 } 388 #endif 389 /* Allow the early environment to override the fdt address */ 390 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16, 391 (uintptr_t)gd->fdt_blob); 392 return 0; 393 } 394 395 /* Get the top of usable RAM */ 396 __weak ulong board_get_usable_ram_top(ulong total_size) 397 { 398 return gd->ram_top; 399 } 400 401 static int setup_dest_addr(void) 402 { 403 debug("Monitor len: %08lX\n", gd->mon_len); 404 /* 405 * Ram is setup, size stored in gd !! 406 */ 407 debug("Ram size: %08lX\n", (ulong)gd->ram_size); 408 #if defined(CONFIG_SYS_MEM_TOP_HIDE) 409 /* 410 * Subtract specified amount of memory to hide so that it won't 411 * get "touched" at all by U-Boot. By fixing up gd->ram_size 412 * the Linux kernel should now get passed the now "corrected" 413 * memory size and won't touch it either. This should work 414 * for arch/ppc and arch/powerpc. Only Linux board ports in 415 * arch/powerpc with bootwrapper support, that recalculate the 416 * memory size from the SDRAM controller setup will have to 417 * get fixed. 418 */ 419 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE; 420 #endif 421 #ifdef CONFIG_SYS_SDRAM_BASE 422 gd->ram_top = CONFIG_SYS_SDRAM_BASE; 423 #endif 424 gd->ram_top += get_effective_memsize(); 425 gd->ram_top = board_get_usable_ram_top(gd->mon_len); 426 gd->relocaddr = gd->ram_top; 427 debug("Ram top: %08lX\n", (ulong)gd->ram_top); 428 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500)) 429 /* 430 * We need to make sure the location we intend to put secondary core 431 * boot code is reserved and not used by any part of u-boot 432 */ 433 if (gd->relocaddr > determine_mp_bootpg(NULL)) { 434 gd->relocaddr = determine_mp_bootpg(NULL); 435 debug("Reserving MP boot page to %08lx\n", gd->relocaddr); 436 } 437 #endif 438 return 0; 439 } 440 441 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR) 442 static int reserve_logbuffer(void) 443 { 444 /* reserve kernel log buffer */ 445 gd->relocaddr -= LOGBUFF_RESERVE; 446 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, 447 gd->relocaddr); 448 return 0; 449 } 450 #endif 451 452 #ifdef CONFIG_PRAM 453 /* reserve protected RAM */ 454 static int reserve_pram(void) 455 { 456 ulong reg; 457 458 reg = getenv_ulong("pram", 10, CONFIG_PRAM); 459 gd->relocaddr -= (reg << 10); /* size is in kB */ 460 debug("Reserving %ldk for protected RAM at %08lx\n", reg, 461 gd->relocaddr); 462 return 0; 463 } 464 #endif /* CONFIG_PRAM */ 465 466 /* Round memory pointer down to next 4 kB limit */ 467 static int reserve_round_4k(void) 468 { 469 gd->relocaddr &= ~(4096 - 1); 470 return 0; 471 } 472 473 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \ 474 defined(CONFIG_ARM) 475 static int reserve_mmu(void) 476 { 477 /* reserve TLB table */ 478 gd->arch.tlb_size = 4096 * 4; 479 gd->relocaddr -= gd->arch.tlb_size; 480 481 /* round down to next 64 kB limit */ 482 gd->relocaddr &= ~(0x10000 - 1); 483 484 gd->arch.tlb_addr = gd->relocaddr; 485 debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr, 486 gd->arch.tlb_addr + gd->arch.tlb_size); 487 return 0; 488 } 489 #endif 490 491 #ifdef CONFIG_LCD 492 static int reserve_lcd(void) 493 { 494 #ifdef CONFIG_FB_ADDR 495 gd->fb_base = CONFIG_FB_ADDR; 496 #else 497 /* reserve memory for LCD display (always full pages) */ 498 gd->relocaddr = lcd_setmem(gd->relocaddr); 499 gd->fb_base = gd->relocaddr; 500 #endif /* CONFIG_FB_ADDR */ 501 return 0; 502 } 503 #endif /* CONFIG_LCD */ 504 505 static int reserve_trace(void) 506 { 507 #ifdef CONFIG_TRACE 508 gd->relocaddr -= CONFIG_TRACE_BUFFER_SIZE; 509 gd->trace_buff = map_sysmem(gd->relocaddr, CONFIG_TRACE_BUFFER_SIZE); 510 debug("Reserving %dk for trace data at: %08lx\n", 511 CONFIG_TRACE_BUFFER_SIZE >> 10, gd->relocaddr); 512 #endif 513 514 return 0; 515 } 516 517 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \ 518 && !defined(CONFIG_ARM) && !defined(CONFIG_X86) 519 static int reserve_video(void) 520 { 521 /* reserve memory for video display (always full pages) */ 522 gd->relocaddr = video_setmem(gd->relocaddr); 523 gd->fb_base = gd->relocaddr; 524 525 return 0; 526 } 527 #endif 528 529 static int reserve_uboot(void) 530 { 531 /* 532 * reserve memory for U-Boot code, data & bss 533 * round down to next 4 kB limit 534 */ 535 gd->relocaddr -= gd->mon_len; 536 gd->relocaddr &= ~(4096 - 1); 537 #ifdef CONFIG_E500 538 /* round down to next 64 kB limit so that IVPR stays aligned */ 539 gd->relocaddr &= ~(65536 - 1); 540 #endif 541 542 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, 543 gd->relocaddr); 544 545 gd->start_addr_sp = gd->relocaddr; 546 547 return 0; 548 } 549 550 #ifndef CONFIG_SPL_BUILD 551 /* reserve memory for malloc() area */ 552 static int reserve_malloc(void) 553 { 554 gd->start_addr_sp = gd->start_addr_sp - TOTAL_MALLOC_LEN; 555 debug("Reserving %dk for malloc() at: %08lx\n", 556 TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp); 557 return 0; 558 } 559 560 /* (permanently) allocate a Board Info struct */ 561 static int reserve_board(void) 562 { 563 gd->start_addr_sp -= sizeof(bd_t); 564 gd->bd = (bd_t *)map_sysmem(gd->start_addr_sp, sizeof(bd_t)); 565 memset(gd->bd, '\0', sizeof(bd_t)); 566 debug("Reserving %zu Bytes for Board Info at: %08lx\n", 567 sizeof(bd_t), gd->start_addr_sp); 568 return 0; 569 } 570 #endif 571 572 static int setup_machine(void) 573 { 574 #ifdef CONFIG_MACH_TYPE 575 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */ 576 #endif 577 return 0; 578 } 579 580 static int reserve_global_data(void) 581 { 582 gd->start_addr_sp -= sizeof(gd_t); 583 gd->new_gd = (gd_t *)map_sysmem(gd->start_addr_sp, sizeof(gd_t)); 584 debug("Reserving %zu Bytes for Global Data at: %08lx\n", 585 sizeof(gd_t), gd->start_addr_sp); 586 return 0; 587 } 588 589 static int reserve_fdt(void) 590 { 591 /* 592 * If the device tree is sitting immediate above our image then we 593 * must relocate it. If it is embedded in the data section, then it 594 * will be relocated with other data. 595 */ 596 if (gd->fdt_blob) { 597 gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32); 598 599 gd->start_addr_sp -= gd->fdt_size; 600 gd->new_fdt = map_sysmem(gd->start_addr_sp, gd->fdt_size); 601 debug("Reserving %lu Bytes for FDT at: %08lx\n", 602 gd->fdt_size, gd->start_addr_sp); 603 } 604 605 return 0; 606 } 607 608 static int reserve_stacks(void) 609 { 610 #ifdef CONFIG_SPL_BUILD 611 # ifdef CONFIG_ARM 612 gd->start_addr_sp -= 128; /* leave 32 words for abort-stack */ 613 gd->irq_sp = gd->start_addr_sp; 614 # endif 615 #else 616 # ifdef CONFIG_PPC 617 ulong *s; 618 # endif 619 620 /* setup stack pointer for exceptions */ 621 gd->start_addr_sp -= 16; 622 gd->start_addr_sp &= ~0xf; 623 gd->irq_sp = gd->start_addr_sp; 624 625 /* 626 * Handle architecture-specific things here 627 * TODO(sjg@chromium.org): Perhaps create arch_reserve_stack() 628 * to handle this and put in arch/xxx/lib/stack.c 629 */ 630 # ifdef CONFIG_ARM 631 # ifdef CONFIG_USE_IRQ 632 gd->start_addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ); 633 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n", 634 CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ, gd->start_addr_sp); 635 636 /* 8-byte alignment for ARM ABI compliance */ 637 gd->start_addr_sp &= ~0x07; 638 # endif 639 /* leave 3 words for abort-stack, plus 1 for alignment */ 640 gd->start_addr_sp -= 16; 641 # elif defined(CONFIG_PPC) 642 /* Clear initial stack frame */ 643 s = (ulong *) gd->start_addr_sp; 644 *s = 0; /* Terminate back chain */ 645 *++s = 0; /* NULL return address */ 646 # endif /* Architecture specific code */ 647 648 return 0; 649 #endif 650 } 651 652 static int display_new_sp(void) 653 { 654 debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp); 655 656 return 0; 657 } 658 659 #ifdef CONFIG_PPC 660 static int setup_board_part1(void) 661 { 662 bd_t *bd = gd->bd; 663 664 /* 665 * Save local variables to board info struct 666 */ 667 668 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of memory */ 669 bd->bi_memsize = gd->ram_size; /* size in bytes */ 670 671 #ifdef CONFIG_SYS_SRAM_BASE 672 bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; /* start of SRAM */ 673 bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; /* size of SRAM */ 674 #endif 675 676 #if defined(CONFIG_8xx) || defined(CONFIG_8260) || defined(CONFIG_5xx) || \ 677 defined(CONFIG_E500) || defined(CONFIG_MPC86xx) 678 bd->bi_immr_base = CONFIG_SYS_IMMR; /* base of IMMR register */ 679 #endif 680 #if defined(CONFIG_MPC5xxx) 681 bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */ 682 #endif 683 #if defined(CONFIG_MPC83xx) 684 bd->bi_immrbar = CONFIG_SYS_IMMR; 685 #endif 686 687 return 0; 688 } 689 690 static int setup_board_part2(void) 691 { 692 bd_t *bd = gd->bd; 693 694 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */ 695 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */ 696 #if defined(CONFIG_CPM2) 697 bd->bi_cpmfreq = gd->arch.cpm_clk; 698 bd->bi_brgfreq = gd->arch.brg_clk; 699 bd->bi_sccfreq = gd->arch.scc_clk; 700 bd->bi_vco = gd->arch.vco_out; 701 #endif /* CONFIG_CPM2 */ 702 #if defined(CONFIG_MPC512X) 703 bd->bi_ipsfreq = gd->arch.ips_clk; 704 #endif /* CONFIG_MPC512X */ 705 #if defined(CONFIG_MPC5xxx) 706 bd->bi_ipbfreq = gd->arch.ipb_clk; 707 bd->bi_pcifreq = gd->pci_clk; 708 #endif /* CONFIG_MPC5xxx */ 709 710 return 0; 711 } 712 #endif 713 714 #ifdef CONFIG_SYS_EXTBDINFO 715 static int setup_board_extra(void) 716 { 717 bd_t *bd = gd->bd; 718 719 strncpy((char *) bd->bi_s_version, "1.2", sizeof(bd->bi_s_version)); 720 strncpy((char *) bd->bi_r_version, U_BOOT_VERSION, 721 sizeof(bd->bi_r_version)); 722 723 bd->bi_procfreq = gd->cpu_clk; /* Processor Speed, In Hz */ 724 bd->bi_plb_busfreq = gd->bus_clk; 725 #if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \ 726 defined(CONFIG_440EP) || defined(CONFIG_440GR) || \ 727 defined(CONFIG_440EPX) || defined(CONFIG_440GRX) 728 bd->bi_pci_busfreq = get_PCI_freq(); 729 bd->bi_opbfreq = get_OPB_freq(); 730 #elif defined(CONFIG_XILINX_405) 731 bd->bi_pci_busfreq = get_PCI_freq(); 732 #endif 733 734 return 0; 735 } 736 #endif 737 738 #ifdef CONFIG_POST 739 static int init_post(void) 740 { 741 post_bootmode_init(); 742 post_run(NULL, POST_ROM | post_bootmode_get(0)); 743 744 return 0; 745 } 746 #endif 747 748 static int setup_baud_rate(void) 749 { 750 /* Ick, can we get rid of this line? */ 751 gd->bd->bi_baudrate = gd->baudrate; 752 753 return 0; 754 } 755 756 static int setup_dram_config(void) 757 { 758 /* Ram is board specific, so move it to board code ... */ 759 dram_init_banksize(); 760 761 return 0; 762 } 763 764 static int reloc_fdt(void) 765 { 766 if (gd->new_fdt) { 767 memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size); 768 gd->fdt_blob = gd->new_fdt; 769 } 770 771 return 0; 772 } 773 774 static int setup_reloc(void) 775 { 776 gd->reloc_off = gd->relocaddr - CONFIG_SYS_TEXT_BASE; 777 memcpy(gd->new_gd, (char *)gd, sizeof(gd_t)); 778 779 debug("Relocation Offset is: %08lx\n", gd->reloc_off); 780 debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n", 781 gd->relocaddr, (ulong)map_to_sysmem(gd->new_gd), 782 gd->start_addr_sp); 783 784 return 0; 785 } 786 787 /* ARM calls relocate_code from its crt0.S */ 788 #if !defined(CONFIG_ARM) 789 790 static int jump_to_copy(void) 791 { 792 /* 793 * x86 is special, but in a nice way. It uses a trampoline which 794 * enables the dcache if possible. 795 * 796 * For now, other archs use relocate_code(), which is implemented 797 * similarly for all archs. When we do generic relocation, hopefully 798 * we can make all archs enable the dcache prior to relocation. 799 */ 800 #ifdef CONFIG_X86 801 /* 802 * SDRAM and console are now initialised. The final stack can now 803 * be setup in SDRAM. Code execution will continue in Flash, but 804 * with the stack in SDRAM and Global Data in temporary memory 805 * (CPU cache) 806 */ 807 board_init_f_r_trampoline(gd->start_addr_sp); 808 #elif defined(CONFIG_SANDBOX) 809 board_init_r(gd->new_gd, 0); 810 #else 811 relocate_code(gd->start_addr_sp, gd->new_gd, gd->relocaddr); 812 #endif 813 814 return 0; 815 } 816 #endif 817 818 /* Record the board_init_f() bootstage (after arch_cpu_init()) */ 819 static int mark_bootstage(void) 820 { 821 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f"); 822 823 return 0; 824 } 825 826 static init_fnc_t init_sequence_f[] = { 827 #if !defined(CONFIG_CPM2) && !defined(CONFIG_MPC512X) && \ 828 !defined(CONFIG_MPC83xx) && !defined(CONFIG_MPC85xx) && \ 829 !defined(CONFIG_MPC86xx) && !defined(CONFIG_X86) 830 zero_global_data, 831 #endif 832 #ifdef CONFIG_SANDBOX 833 setup_ram_buf, 834 #endif 835 setup_mon_len, 836 setup_fdt, 837 trace_early_init, 838 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx) 839 /* TODO: can this go into arch_cpu_init()? */ 840 probecpu, 841 #endif 842 arch_cpu_init, /* basic arch cpu dependent setup */ 843 #ifdef CONFIG_X86 844 cpu_init_f, /* TODO(sjg@chromium.org): remove */ 845 # ifdef CONFIG_OF_CONTROL 846 find_fdt, /* TODO(sjg@chromium.org): remove */ 847 # endif 848 #endif 849 mark_bootstage, 850 #ifdef CONFIG_OF_CONTROL 851 fdtdec_check_fdt, 852 #endif 853 #if defined(CONFIG_BOARD_EARLY_INIT_F) 854 board_early_init_f, 855 #endif 856 /* TODO: can any of this go into arch_cpu_init()? */ 857 #if defined(CONFIG_PPC) && !defined(CONFIG_8xx_CPUCLK_DEFAULT) 858 get_clocks, /* get CPU and bus clocks (etc.) */ 859 #if defined(CONFIG_TQM8xxL) && !defined(CONFIG_TQM866M) \ 860 && !defined(CONFIG_TQM885D) 861 adjust_sdram_tbs_8xx, 862 #endif 863 /* TODO: can we rename this to timer_init()? */ 864 init_timebase, 865 #endif 866 #ifdef CONFIG_ARM 867 timer_init, /* initialize timer */ 868 #endif 869 #ifdef CONFIG_SYS_ALLOC_DPRAM 870 #if !defined(CONFIG_CPM2) 871 dpram_init, 872 #endif 873 #endif 874 #if defined(CONFIG_BOARD_POSTCLK_INIT) 875 board_postclk_init, 876 #endif 877 #ifdef CONFIG_FSL_ESDHC 878 get_clocks, 879 #endif 880 env_init, /* initialize environment */ 881 #if defined(CONFIG_8xx_CPUCLK_DEFAULT) 882 /* get CPU and bus clocks according to the environment variable */ 883 get_clocks_866, 884 /* adjust sdram refresh rate according to the new clock */ 885 sdram_adjust_866, 886 init_timebase, 887 #endif 888 init_baud_rate, /* initialze baudrate settings */ 889 serial_init, /* serial communications setup */ 890 console_init_f, /* stage 1 init of console */ 891 #ifdef CONFIG_SANDBOX 892 sandbox_early_getopt_check, 893 #endif 894 #ifdef CONFIG_OF_CONTROL 895 fdtdec_prepare_fdt, 896 #endif 897 display_options, /* say that we are here */ 898 display_text_info, /* show debugging info if required */ 899 #if defined(CONFIG_8260) 900 prt_8260_rsr, 901 prt_8260_clks, 902 #endif /* CONFIG_8260 */ 903 #if defined(CONFIG_MPC83xx) 904 prt_83xx_rsr, 905 #endif 906 #ifdef CONFIG_PPC 907 checkcpu, 908 #endif 909 #if defined(CONFIG_DISPLAY_CPUINFO) 910 print_cpuinfo, /* display cpu info (and speed) */ 911 #endif 912 #if defined(CONFIG_MPC5xxx) 913 prt_mpc5xxx_clks, 914 #endif /* CONFIG_MPC5xxx */ 915 #if defined(CONFIG_DISPLAY_BOARDINFO) 916 checkboard, /* display board info */ 917 #endif 918 INIT_FUNC_WATCHDOG_INIT 919 #if defined(CONFIG_MISC_INIT_F) 920 misc_init_f, 921 #endif 922 INIT_FUNC_WATCHDOG_RESET 923 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) || \ 924 defined(CONFIG_SYS_I2C) 925 init_func_i2c, 926 #endif 927 #if defined(CONFIG_HARD_SPI) 928 init_func_spi, 929 #endif 930 #ifdef CONFIG_X86 931 dram_init_f, /* configure available RAM banks */ 932 calculate_relocation_address, 933 #endif 934 announce_dram_init, 935 /* TODO: unify all these dram functions? */ 936 #ifdef CONFIG_ARM 937 dram_init, /* configure available RAM banks */ 938 #endif 939 #ifdef CONFIG_PPC 940 init_func_ram, 941 #endif 942 #ifdef CONFIG_POST 943 post_init_f, 944 #endif 945 INIT_FUNC_WATCHDOG_RESET 946 #if defined(CONFIG_SYS_DRAM_TEST) 947 testdram, 948 #endif /* CONFIG_SYS_DRAM_TEST */ 949 INIT_FUNC_WATCHDOG_RESET 950 951 #ifdef CONFIG_POST 952 init_post, 953 #endif 954 INIT_FUNC_WATCHDOG_RESET 955 /* 956 * Now that we have DRAM mapped and working, we can 957 * relocate the code and continue running from DRAM. 958 * 959 * Reserve memory at end of RAM for (top down in that order): 960 * - area that won't get touched by U-Boot and Linux (optional) 961 * - kernel log buffer 962 * - protected RAM 963 * - LCD framebuffer 964 * - monitor code 965 * - board info struct 966 */ 967 setup_dest_addr, 968 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR) 969 reserve_logbuffer, 970 #endif 971 #ifdef CONFIG_PRAM 972 reserve_pram, 973 #endif 974 reserve_round_4k, 975 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \ 976 defined(CONFIG_ARM) 977 reserve_mmu, 978 #endif 979 #ifdef CONFIG_LCD 980 reserve_lcd, 981 #endif 982 reserve_trace, 983 /* TODO: Why the dependency on CONFIG_8xx? */ 984 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \ 985 && !defined(CONFIG_ARM) && !defined(CONFIG_X86) 986 reserve_video, 987 #endif 988 reserve_uboot, 989 #ifndef CONFIG_SPL_BUILD 990 reserve_malloc, 991 reserve_board, 992 #endif 993 setup_machine, 994 reserve_global_data, 995 reserve_fdt, 996 reserve_stacks, 997 setup_dram_config, 998 show_dram_config, 999 #ifdef CONFIG_PPC 1000 setup_board_part1, 1001 INIT_FUNC_WATCHDOG_RESET 1002 setup_board_part2, 1003 #endif 1004 setup_baud_rate, 1005 display_new_sp, 1006 #ifdef CONFIG_SYS_EXTBDINFO 1007 setup_board_extra, 1008 #endif 1009 INIT_FUNC_WATCHDOG_RESET 1010 reloc_fdt, 1011 setup_reloc, 1012 #ifndef CONFIG_ARM 1013 jump_to_copy, 1014 #endif 1015 NULL, 1016 }; 1017 1018 void board_init_f(ulong boot_flags) 1019 { 1020 #ifndef CONFIG_X86 1021 gd_t data; 1022 1023 gd = &data; 1024 #endif 1025 1026 gd->flags = boot_flags; 1027 1028 if (initcall_run_list(init_sequence_f)) 1029 hang(); 1030 1031 #ifndef CONFIG_ARM 1032 /* NOTREACHED - jump_to_copy() does not return */ 1033 hang(); 1034 #endif 1035 } 1036 1037 #ifdef CONFIG_X86 1038 /* 1039 * For now this code is only used on x86. 1040 * 1041 * init_sequence_f_r is the list of init functions which are run when 1042 * U-Boot is executing from Flash with a semi-limited 'C' environment. 1043 * The following limitations must be considered when implementing an 1044 * '_f_r' function: 1045 * - 'static' variables are read-only 1046 * - Global Data (gd->xxx) is read/write 1047 * 1048 * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if 1049 * supported). It _should_, if possible, copy global data to RAM and 1050 * initialise the CPU caches (to speed up the relocation process) 1051 * 1052 * NOTE: At present only x86 uses this route, but it is intended that 1053 * all archs will move to this when generic relocation is implemented. 1054 */ 1055 static init_fnc_t init_sequence_f_r[] = { 1056 init_cache_f_r, 1057 copy_uboot_to_ram, 1058 clear_bss, 1059 do_elf_reloc_fixups, 1060 1061 NULL, 1062 }; 1063 1064 void board_init_f_r(void) 1065 { 1066 if (initcall_run_list(init_sequence_f_r)) 1067 hang(); 1068 1069 /* 1070 * U-Boot has been copied into SDRAM, the BSS has been cleared etc. 1071 * Transfer execution from Flash to RAM by calculating the address 1072 * of the in-RAM copy of board_init_r() and calling it 1073 */ 1074 (board_init_r + gd->reloc_off)(gd, gd->relocaddr); 1075 1076 /* NOTREACHED - board_init_r() does not return */ 1077 hang(); 1078 } 1079 #endif /* CONFIG_X86 */ 1080