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 #if defined(CONFIG_CMD_IDE) 35 #include <ide.h> 36 #endif 37 #include <i2c.h> 38 #include <initcall.h> 39 #include <logbuff.h> 40 41 /* TODO: Can we move these into arch/ headers? */ 42 #ifdef CONFIG_8xx 43 #include <mpc8xx.h> 44 #endif 45 #ifdef CONFIG_5xx 46 #include <mpc5xx.h> 47 #endif 48 #ifdef CONFIG_MPC5xxx 49 #include <mpc5xxx.h> 50 #endif 51 52 #include <os.h> 53 #include <post.h> 54 #include <spi.h> 55 #include <watchdog.h> 56 #include <asm/errno.h> 57 #include <asm/io.h> 58 #ifdef CONFIG_MP 59 #include <asm/mp.h> 60 #endif 61 #include <asm/sections.h> 62 #ifdef CONFIG_X86 63 #include <asm/init_helpers.h> 64 #include <asm/relocate.h> 65 #endif 66 #ifdef CONFIG_SANDBOX 67 #include <asm/state.h> 68 #endif 69 #include <linux/compiler.h> 70 71 /* 72 * Pointer to initial global data area 73 * 74 * Here we initialize it if needed. 75 */ 76 #ifdef XTRN_DECLARE_GLOBAL_DATA_PTR 77 #undef XTRN_DECLARE_GLOBAL_DATA_PTR 78 #define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */ 79 DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CONFIG_SYS_INIT_GD_ADDR); 80 #else 81 DECLARE_GLOBAL_DATA_PTR; 82 #endif 83 84 /* 85 * sjg: IMO this code should be 86 * refactored to a single function, something like: 87 * 88 * void led_set_state(enum led_colour_t colour, int on); 89 */ 90 /************************************************************************ 91 * Coloured LED functionality 92 ************************************************************************ 93 * May be supplied by boards if desired 94 */ 95 inline void __coloured_LED_init(void) {} 96 void coloured_LED_init(void) 97 __attribute__((weak, alias("__coloured_LED_init"))); 98 inline void __red_led_on(void) {} 99 void red_led_on(void) __attribute__((weak, alias("__red_led_on"))); 100 inline void __red_led_off(void) {} 101 void red_led_off(void) __attribute__((weak, alias("__red_led_off"))); 102 inline void __green_led_on(void) {} 103 void green_led_on(void) __attribute__((weak, alias("__green_led_on"))); 104 inline void __green_led_off(void) {} 105 void green_led_off(void) __attribute__((weak, alias("__green_led_off"))); 106 inline void __yellow_led_on(void) {} 107 void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on"))); 108 inline void __yellow_led_off(void) {} 109 void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off"))); 110 inline void __blue_led_on(void) {} 111 void blue_led_on(void) __attribute__((weak, alias("__blue_led_on"))); 112 inline void __blue_led_off(void) {} 113 void blue_led_off(void) __attribute__((weak, alias("__blue_led_off"))); 114 115 /* 116 * Why is gd allocated a register? Prior to reloc it might be better to 117 * just pass it around to each function in this file? 118 * 119 * After reloc one could argue that it is hardly used and doesn't need 120 * to be in a register. Or if it is it should perhaps hold pointers to all 121 * global data for all modules, so that post-reloc we can avoid the massive 122 * literal pool we get on ARM. Or perhaps just encourage each module to use 123 * a structure... 124 */ 125 126 /* 127 * Could the CONFIG_SPL_BUILD infection become a flag in gd? 128 */ 129 130 #if defined(CONFIG_WATCHDOG) 131 static int init_func_watchdog_init(void) 132 { 133 puts(" Watchdog enabled\n"); 134 WATCHDOG_RESET(); 135 136 return 0; 137 } 138 139 int init_func_watchdog_reset(void) 140 { 141 WATCHDOG_RESET(); 142 143 return 0; 144 } 145 #endif /* CONFIG_WATCHDOG */ 146 147 void __board_add_ram_info(int use_default) 148 { 149 /* please define platform specific board_add_ram_info() */ 150 } 151 152 void board_add_ram_info(int) 153 __attribute__ ((weak, alias("__board_add_ram_info"))); 154 155 static int init_baud_rate(void) 156 { 157 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE); 158 return 0; 159 } 160 161 static int display_text_info(void) 162 { 163 #ifndef CONFIG_SANDBOX 164 ulong bss_start, bss_end; 165 166 #ifdef CONFIG_SYS_SYM_OFFSETS 167 bss_start = _bss_start_ofs + _TEXT_BASE; 168 bss_end = _bss_end_ofs + _TEXT_BASE; 169 #else 170 bss_start = (ulong)&__bss_start; 171 bss_end = (ulong)&__bss_end; 172 #endif 173 debug("U-Boot code: %08X -> %08lX BSS: -> %08lX\n", 174 CONFIG_SYS_TEXT_BASE, bss_start, bss_end); 175 #endif 176 177 #ifdef CONFIG_MODEM_SUPPORT 178 debug("Modem Support enabled\n"); 179 #endif 180 #ifdef CONFIG_USE_IRQ 181 debug("IRQ Stack: %08lx\n", IRQ_STACK_START); 182 debug("FIQ Stack: %08lx\n", FIQ_STACK_START); 183 #endif 184 185 return 0; 186 } 187 188 static int announce_dram_init(void) 189 { 190 puts("DRAM: "); 191 return 0; 192 } 193 194 #ifdef CONFIG_PPC 195 static int init_func_ram(void) 196 { 197 #ifdef CONFIG_BOARD_TYPES 198 int board_type = gd->board_type; 199 #else 200 int board_type = 0; /* use dummy arg */ 201 #endif 202 203 gd->ram_size = initdram(board_type); 204 205 if (gd->ram_size > 0) 206 return 0; 207 208 puts("*** failed ***\n"); 209 return 1; 210 } 211 #endif 212 213 static int show_dram_config(void) 214 { 215 ulong size; 216 217 #ifdef CONFIG_NR_DRAM_BANKS 218 int i; 219 220 debug("\nRAM Configuration:\n"); 221 for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) { 222 size += gd->bd->bi_dram[i].size; 223 debug("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start); 224 #ifdef DEBUG 225 print_size(gd->bd->bi_dram[i].size, "\n"); 226 #endif 227 } 228 debug("\nDRAM: "); 229 #else 230 size = gd->ram_size; 231 #endif 232 233 print_size(size, ""); 234 board_add_ram_info(0); 235 putc('\n'); 236 237 return 0; 238 } 239 240 ulong get_effective_memsize(void) 241 { 242 #ifndef CONFIG_VERY_BIG_RAM 243 return gd->ram_size; 244 #else 245 /* limit stack to what we can reasonable map */ 246 return ((gd->ram_size > CONFIG_MAX_MEM_MAPPED) ? 247 CONFIG_MAX_MEM_MAPPED : gd->ram_size); 248 #endif 249 } 250 251 void __dram_init_banksize(void) 252 { 253 #if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE) 254 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE; 255 gd->bd->bi_dram[0].size = get_effective_memsize(); 256 #endif 257 } 258 259 void dram_init_banksize(void) 260 __attribute__((weak, alias("__dram_init_banksize"))); 261 262 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) 263 static int init_func_i2c(void) 264 { 265 puts("I2C: "); 266 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); 267 puts("ready\n"); 268 return 0; 269 } 270 #endif 271 272 #if defined(CONFIG_HARD_SPI) 273 static int init_func_spi(void) 274 { 275 puts("SPI: "); 276 spi_init(); 277 puts("ready\n"); 278 return 0; 279 } 280 #endif 281 282 __maybe_unused 283 static int zero_global_data(void) 284 { 285 memset((void *)gd, '\0', sizeof(gd_t)); 286 287 return 0; 288 } 289 290 static int setup_mon_len(void) 291 { 292 #ifdef CONFIG_SYS_SYM_OFFSETS 293 gd->mon_len = _bss_end_ofs; 294 #elif defined(CONFIG_SANDBOX) 295 gd->mon_len = (ulong)&_end - (ulong)_init; 296 #else 297 /* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */ 298 gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE; 299 #endif 300 return 0; 301 } 302 303 __weak int arch_cpu_init(void) 304 { 305 return 0; 306 } 307 308 #ifdef CONFIG_SANDBOX 309 static int setup_ram_buf(void) 310 { 311 gd->arch.ram_buf = os_malloc(CONFIG_SYS_SDRAM_SIZE); 312 assert(gd->arch.ram_buf); 313 gd->ram_size = CONFIG_SYS_SDRAM_SIZE; 314 315 return 0; 316 } 317 #endif 318 319 static int setup_fdt(void) 320 { 321 #ifdef CONFIG_OF_EMBED 322 /* Get a pointer to the FDT */ 323 gd->fdt_blob = _binary_dt_dtb_start; 324 #elif defined CONFIG_OF_SEPARATE 325 /* FDT is at end of image */ 326 # ifdef CONFIG_SYS_SYM_OFFSETS 327 gd->fdt_blob = (void *)(_end_ofs + CONFIG_SYS_TEXT_BASE); 328 # else 329 gd->fdt_blob = (ulong *)&_end; 330 # endif 331 #endif 332 /* Allow the early environment to override the fdt address */ 333 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16, 334 (uintptr_t)gd->fdt_blob); 335 return 0; 336 } 337 338 /* Get the top of usable RAM */ 339 __weak ulong board_get_usable_ram_top(ulong total_size) 340 { 341 return gd->ram_top; 342 } 343 344 static int setup_dest_addr(void) 345 { 346 debug("Monitor len: %08lX\n", gd->mon_len); 347 /* 348 * Ram is setup, size stored in gd !! 349 */ 350 debug("Ram size: %08lX\n", (ulong)gd->ram_size); 351 #if defined(CONFIG_SYS_MEM_TOP_HIDE) 352 /* 353 * Subtract specified amount of memory to hide so that it won't 354 * get "touched" at all by U-Boot. By fixing up gd->ram_size 355 * the Linux kernel should now get passed the now "corrected" 356 * memory size and won't touch it either. This should work 357 * for arch/ppc and arch/powerpc. Only Linux board ports in 358 * arch/powerpc with bootwrapper support, that recalculate the 359 * memory size from the SDRAM controller setup will have to 360 * get fixed. 361 */ 362 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE; 363 #endif 364 #ifdef CONFIG_SYS_SDRAM_BASE 365 gd->ram_top = CONFIG_SYS_SDRAM_BASE; 366 #endif 367 gd->ram_top += get_effective_memsize(); 368 gd->ram_top = board_get_usable_ram_top(gd->mon_len); 369 gd->dest_addr = gd->ram_top; 370 debug("Ram top: %08lX\n", (ulong)gd->ram_top); 371 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500)) 372 /* 373 * We need to make sure the location we intend to put secondary core 374 * boot code is reserved and not used by any part of u-boot 375 */ 376 if (gd->dest_addr > determine_mp_bootpg(NULL)) { 377 gd->dest_addr = determine_mp_bootpg(NULL); 378 debug("Reserving MP boot page to %08lx\n", gd->dest_addr); 379 } 380 #endif 381 gd->dest_addr_sp = gd->dest_addr; 382 return 0; 383 } 384 385 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR) 386 static int reserve_logbuffer(void) 387 { 388 /* reserve kernel log buffer */ 389 gd->dest_addr -= LOGBUFF_RESERVE; 390 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, 391 gd->dest_addr); 392 return 0; 393 } 394 #endif 395 396 #ifdef CONFIG_PRAM 397 /* reserve protected RAM */ 398 static int reserve_pram(void) 399 { 400 ulong reg; 401 402 reg = getenv_ulong("pram", 10, CONFIG_PRAM); 403 gd->dest_addr -= (reg << 10); /* size is in kB */ 404 debug("Reserving %ldk for protected RAM at %08lx\n", reg, 405 gd->dest_addr); 406 return 0; 407 } 408 #endif /* CONFIG_PRAM */ 409 410 /* Round memory pointer down to next 4 kB limit */ 411 static int reserve_round_4k(void) 412 { 413 gd->dest_addr &= ~(4096 - 1); 414 return 0; 415 } 416 417 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \ 418 defined(CONFIG_ARM) 419 static int reserve_mmu(void) 420 { 421 /* reserve TLB table */ 422 gd->arch.tlb_size = 4096 * 4; 423 gd->dest_addr -= gd->arch.tlb_size; 424 425 /* round down to next 64 kB limit */ 426 gd->dest_addr &= ~(0x10000 - 1); 427 428 gd->arch.tlb_addr = gd->dest_addr; 429 debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr, 430 gd->arch.tlb_addr + gd->arch.tlb_size); 431 return 0; 432 } 433 #endif 434 435 #ifdef CONFIG_LCD 436 static int reserve_lcd(void) 437 { 438 #ifdef CONFIG_FB_ADDR 439 gd->fb_base = CONFIG_FB_ADDR; 440 #else 441 /* reserve memory for LCD display (always full pages) */ 442 gd->dest_addr = lcd_setmem(gd->dest_addr); 443 gd->fb_base = gd->dest_addr; 444 #endif /* CONFIG_FB_ADDR */ 445 return 0; 446 } 447 #endif /* CONFIG_LCD */ 448 449 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \ 450 && !defined(CONFIG_ARM) && !defined(CONFIG_X86) 451 static int reserve_video(void) 452 { 453 /* reserve memory for video display (always full pages) */ 454 gd->dest_addr = video_setmem(gd->dest_addr); 455 gd->fb_base = gd->dest_addr; 456 457 return 0; 458 } 459 #endif 460 461 static int reserve_uboot(void) 462 { 463 /* 464 * reserve memory for U-Boot code, data & bss 465 * round down to next 4 kB limit 466 */ 467 gd->dest_addr -= gd->mon_len; 468 gd->dest_addr &= ~(4096 - 1); 469 #ifdef CONFIG_E500 470 /* round down to next 64 kB limit so that IVPR stays aligned */ 471 gd->dest_addr &= ~(65536 - 1); 472 #endif 473 474 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, 475 gd->dest_addr); 476 return 0; 477 } 478 479 #ifndef CONFIG_SPL_BUILD 480 /* reserve memory for malloc() area */ 481 static int reserve_malloc(void) 482 { 483 gd->dest_addr_sp = gd->dest_addr - TOTAL_MALLOC_LEN; 484 debug("Reserving %dk for malloc() at: %08lx\n", 485 TOTAL_MALLOC_LEN >> 10, gd->dest_addr_sp); 486 return 0; 487 } 488 489 /* (permanently) allocate a Board Info struct */ 490 static int reserve_board(void) 491 { 492 gd->dest_addr_sp -= sizeof(bd_t); 493 gd->bd = (bd_t *)map_sysmem(gd->dest_addr_sp, sizeof(bd_t)); 494 memset(gd->bd, '\0', sizeof(bd_t)); 495 debug("Reserving %zu Bytes for Board Info at: %08lx\n", 496 sizeof(bd_t), gd->dest_addr_sp); 497 return 0; 498 } 499 #endif 500 501 static int setup_machine(void) 502 { 503 #ifdef CONFIG_MACH_TYPE 504 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */ 505 #endif 506 return 0; 507 } 508 509 static int reserve_global_data(void) 510 { 511 gd->dest_addr_sp -= sizeof(gd_t); 512 gd->new_gd = (gd_t *)map_sysmem(gd->dest_addr_sp, sizeof(gd_t)); 513 debug("Reserving %zu Bytes for Global Data at: %08lx\n", 514 sizeof(gd_t), gd->dest_addr_sp); 515 return 0; 516 } 517 518 static int reserve_fdt(void) 519 { 520 /* 521 * If the device tree is sitting immediate above our image then we 522 * must relocate it. If it is embedded in the data section, then it 523 * will be relocated with other data. 524 */ 525 if (gd->fdt_blob) { 526 gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32); 527 528 gd->dest_addr_sp -= gd->fdt_size; 529 gd->new_fdt = map_sysmem(gd->dest_addr_sp, gd->fdt_size); 530 debug("Reserving %lu Bytes for FDT at: %08lx\n", 531 gd->fdt_size, gd->dest_addr_sp); 532 } 533 534 return 0; 535 } 536 537 static int reserve_stacks(void) 538 { 539 #ifdef CONFIG_SPL_BUILD 540 # ifdef CONFIG_ARM 541 gd->dest_addr_sp -= 128; /* leave 32 words for abort-stack */ 542 gd->irq_sp = gd->dest_addr_sp; 543 # endif 544 #else 545 # ifdef CONFIG_PPC 546 ulong *s; 547 # endif 548 549 /* setup stack pointer for exceptions */ 550 gd->dest_addr_sp -= 16; 551 gd->dest_addr_sp &= ~0xf; 552 gd->irq_sp = gd->dest_addr_sp; 553 554 /* 555 * Handle architecture-specific things here 556 * TODO(sjg@chromium.org): Perhaps create arch_reserve_stack() 557 * to handle this and put in arch/xxx/lib/stack.c 558 */ 559 # ifdef CONFIG_ARM 560 # ifdef CONFIG_USE_IRQ 561 gd->dest_addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ); 562 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n", 563 CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ, gd->dest_addr_sp); 564 565 /* 8-byte alignment for ARM ABI compliance */ 566 gd->dest_addr_sp &= ~0x07; 567 # endif 568 /* leave 3 words for abort-stack, plus 1 for alignment */ 569 gd->dest_addr_sp -= 16; 570 # elif defined(CONFIG_PPC) 571 /* Clear initial stack frame */ 572 s = (ulong *) gd->dest_addr_sp; 573 *s = 0; /* Terminate back chain */ 574 *++s = 0; /* NULL return address */ 575 # endif /* Architecture specific code */ 576 577 return 0; 578 #endif 579 } 580 581 static int display_new_sp(void) 582 { 583 debug("New Stack Pointer is: %08lx\n", gd->dest_addr_sp); 584 585 return 0; 586 } 587 588 #ifdef CONFIG_PPC 589 static int setup_board_part1(void) 590 { 591 bd_t *bd = gd->bd; 592 593 /* 594 * Save local variables to board info struct 595 */ 596 597 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of memory */ 598 bd->bi_memsize = gd->ram_size; /* size in bytes */ 599 600 #ifdef CONFIG_SYS_SRAM_BASE 601 bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; /* start of SRAM */ 602 bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; /* size of SRAM */ 603 #endif 604 605 #if defined(CONFIG_8xx) || defined(CONFIG_8260) || defined(CONFIG_5xx) || \ 606 defined(CONFIG_E500) || defined(CONFIG_MPC86xx) 607 bd->bi_immr_base = CONFIG_SYS_IMMR; /* base of IMMR register */ 608 #endif 609 #if defined(CONFIG_MPC5xxx) 610 bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */ 611 #endif 612 #if defined(CONFIG_MPC83xx) 613 bd->bi_immrbar = CONFIG_SYS_IMMR; 614 #endif 615 #if defined(CONFIG_MPC8220) 616 bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */ 617 bd->bi_inpfreq = gd->arch.inp_clk; 618 bd->bi_pcifreq = gd->pci_clk; 619 bd->bi_vcofreq = gd->arch.vco_clk; 620 bd->bi_pevfreq = gd->arch.pev_clk; 621 bd->bi_flbfreq = gd->arch.flb_clk; 622 623 /* store bootparam to sram (backward compatible), here? */ 624 { 625 u32 *sram = (u32 *) CONFIG_SYS_SRAM_BASE; 626 627 *sram++ = gd->ram_size; 628 *sram++ = gd->bus_clk; 629 *sram++ = gd->arch.inp_clk; 630 *sram++ = gd->cpu_clk; 631 *sram++ = gd->arch.vco_clk; 632 *sram++ = gd->arch.flb_clk; 633 *sram++ = 0xb8c3ba11; /* boot signature */ 634 } 635 #endif 636 637 return 0; 638 } 639 640 static int setup_board_part2(void) 641 { 642 bd_t *bd = gd->bd; 643 644 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */ 645 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */ 646 #if defined(CONFIG_CPM2) 647 bd->bi_cpmfreq = gd->arch.cpm_clk; 648 bd->bi_brgfreq = gd->arch.brg_clk; 649 bd->bi_sccfreq = gd->arch.scc_clk; 650 bd->bi_vco = gd->arch.vco_out; 651 #endif /* CONFIG_CPM2 */ 652 #if defined(CONFIG_MPC512X) 653 bd->bi_ipsfreq = gd->arch.ips_clk; 654 #endif /* CONFIG_MPC512X */ 655 #if defined(CONFIG_MPC5xxx) 656 bd->bi_ipbfreq = gd->arch.ipb_clk; 657 bd->bi_pcifreq = gd->pci_clk; 658 #endif /* CONFIG_MPC5xxx */ 659 660 return 0; 661 } 662 #endif 663 664 #ifdef CONFIG_SYS_EXTBDINFO 665 static int setup_board_extra(void) 666 { 667 bd_t *bd = gd->bd; 668 669 strncpy((char *) bd->bi_s_version, "1.2", sizeof(bd->bi_s_version)); 670 strncpy((char *) bd->bi_r_version, U_BOOT_VERSION, 671 sizeof(bd->bi_r_version)); 672 673 bd->bi_procfreq = gd->cpu_clk; /* Processor Speed, In Hz */ 674 bd->bi_plb_busfreq = gd->bus_clk; 675 #if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \ 676 defined(CONFIG_440EP) || defined(CONFIG_440GR) || \ 677 defined(CONFIG_440EPX) || defined(CONFIG_440GRX) 678 bd->bi_pci_busfreq = get_PCI_freq(); 679 bd->bi_opbfreq = get_OPB_freq(); 680 #elif defined(CONFIG_XILINX_405) 681 bd->bi_pci_busfreq = get_PCI_freq(); 682 #endif 683 684 return 0; 685 } 686 #endif 687 688 #ifdef CONFIG_POST 689 static int init_post(void) 690 { 691 post_bootmode_init(); 692 post_run(NULL, POST_ROM | post_bootmode_get(0)); 693 694 return 0; 695 } 696 #endif 697 698 static int setup_baud_rate(void) 699 { 700 /* Ick, can we get rid of this line? */ 701 gd->bd->bi_baudrate = gd->baudrate; 702 703 return 0; 704 } 705 706 static int setup_dram_config(void) 707 { 708 /* Ram is board specific, so move it to board code ... */ 709 dram_init_banksize(); 710 711 return 0; 712 } 713 714 static int reloc_fdt(void) 715 { 716 if (gd->new_fdt) { 717 memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size); 718 gd->fdt_blob = gd->new_fdt; 719 } 720 721 return 0; 722 } 723 724 static int setup_reloc(void) 725 { 726 gd->relocaddr = gd->dest_addr; 727 gd->start_addr_sp = gd->dest_addr_sp; 728 gd->reloc_off = gd->dest_addr - CONFIG_SYS_TEXT_BASE; 729 memcpy(gd->new_gd, (char *)gd, sizeof(gd_t)); 730 731 debug("Relocation Offset is: %08lx\n", gd->reloc_off); 732 debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n", 733 gd->dest_addr, (ulong)map_to_sysmem(gd->new_gd), 734 gd->dest_addr_sp); 735 736 return 0; 737 } 738 739 /* ARM calls relocate_code from its crt0.S */ 740 #if !defined(CONFIG_ARM) 741 742 static int jump_to_copy(void) 743 { 744 /* 745 * x86 is special, but in a nice way. It uses a trampoline which 746 * enables the dcache if possible. 747 * 748 * For now, other archs use relocate_code(), which is implemented 749 * similarly for all archs. When we do generic relocation, hopefully 750 * we can make all archs enable the dcache prior to relocation. 751 */ 752 #ifdef CONFIG_X86 753 /* 754 * SDRAM and console are now initialised. The final stack can now 755 * be setup in SDRAM. Code execution will continue in Flash, but 756 * with the stack in SDRAM and Global Data in temporary memory 757 * (CPU cache) 758 */ 759 board_init_f_r_trampoline(gd->start_addr_sp); 760 #elif defined(CONFIG_SANDBOX) 761 board_init_r(gd->new_gd, 0); 762 #else 763 relocate_code(gd->dest_addr_sp, gd->new_gd, gd->dest_addr); 764 #endif 765 766 return 0; 767 } 768 #endif 769 770 /* Record the board_init_f() bootstage (after arch_cpu_init()) */ 771 static int mark_bootstage(void) 772 { 773 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f"); 774 775 return 0; 776 } 777 778 static init_fnc_t init_sequence_f[] = { 779 #if !defined(CONFIG_CPM2) && !defined(CONFIG_MPC512X) && \ 780 !defined(CONFIG_MPC83xx) && !defined(CONFIG_MPC85xx) && \ 781 !defined(CONFIG_MPC86xx) && !defined(CONFIG_X86) 782 zero_global_data, 783 #endif 784 #ifdef CONFIG_SANDBOX 785 setup_ram_buf, 786 #endif 787 setup_fdt, 788 setup_mon_len, 789 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx) 790 /* TODO: can this go into arch_cpu_init()? */ 791 probecpu, 792 #endif 793 arch_cpu_init, /* basic arch cpu dependent setup */ 794 #ifdef CONFIG_X86 795 cpu_init_f, /* TODO(sjg@chromium.org): remove */ 796 # ifdef CONFIG_OF_CONTROL 797 find_fdt, /* TODO(sjg@chromium.org): remove */ 798 # endif 799 #endif 800 mark_bootstage, 801 #ifdef CONFIG_OF_CONTROL 802 fdtdec_check_fdt, 803 #endif 804 #if defined(CONFIG_BOARD_EARLY_INIT_F) 805 board_early_init_f, 806 #endif 807 /* TODO: can any of this go into arch_cpu_init()? */ 808 #if defined(CONFIG_PPC) && !defined(CONFIG_8xx_CPUCLK_DEFAULT) 809 get_clocks, /* get CPU and bus clocks (etc.) */ 810 #if defined(CONFIG_TQM8xxL) && !defined(CONFIG_TQM866M) \ 811 && !defined(CONFIG_TQM885D) 812 adjust_sdram_tbs_8xx, 813 #endif 814 /* TODO: can we rename this to timer_init()? */ 815 init_timebase, 816 #endif 817 #ifdef CONFIG_ARM 818 timer_init, /* initialize timer */ 819 #endif 820 #ifdef CONFIG_BOARD_POSTCLK_INIT 821 board_postclk_init, 822 #endif 823 #ifdef CONFIG_FSL_ESDHC 824 get_clocks, 825 #endif 826 #ifdef CONFIG_SYS_ALLOC_DPRAM 827 #if !defined(CONFIG_CPM2) 828 dpram_init, 829 #endif 830 #endif 831 #if defined(CONFIG_BOARD_POSTCLK_INIT) 832 board_postclk_init, 833 #endif 834 env_init, /* initialize environment */ 835 #if defined(CONFIG_8xx_CPUCLK_DEFAULT) 836 /* get CPU and bus clocks according to the environment variable */ 837 get_clocks_866, 838 /* adjust sdram refresh rate according to the new clock */ 839 sdram_adjust_866, 840 init_timebase, 841 #endif 842 init_baud_rate, /* initialze baudrate settings */ 843 serial_init, /* serial communications setup */ 844 console_init_f, /* stage 1 init of console */ 845 #ifdef CONFIG_SANDBOX 846 sandbox_early_getopt_check, 847 #endif 848 #ifdef CONFIG_OF_CONTROL 849 fdtdec_prepare_fdt, 850 #endif 851 display_options, /* say that we are here */ 852 display_text_info, /* show debugging info if required */ 853 #if defined(CONFIG_8260) 854 prt_8260_rsr, 855 prt_8260_clks, 856 #endif /* CONFIG_8260 */ 857 #if defined(CONFIG_MPC83xx) 858 prt_83xx_rsr, 859 #endif 860 #ifdef CONFIG_PPC 861 checkcpu, 862 #endif 863 #if defined(CONFIG_DISPLAY_CPUINFO) 864 print_cpuinfo, /* display cpu info (and speed) */ 865 #endif 866 #if defined(CONFIG_MPC5xxx) 867 prt_mpc5xxx_clks, 868 #endif /* CONFIG_MPC5xxx */ 869 #if defined(CONFIG_MPC8220) 870 prt_mpc8220_clks, 871 #endif 872 #if defined(CONFIG_DISPLAY_BOARDINFO) 873 checkboard, /* display board info */ 874 #endif 875 INIT_FUNC_WATCHDOG_INIT 876 #if defined(CONFIG_MISC_INIT_F) 877 misc_init_f, 878 #endif 879 INIT_FUNC_WATCHDOG_RESET 880 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) 881 init_func_i2c, 882 #endif 883 #if defined(CONFIG_HARD_SPI) 884 init_func_spi, 885 #endif 886 #ifdef CONFIG_X86 887 dram_init_f, /* configure available RAM banks */ 888 calculate_relocation_address, 889 #endif 890 announce_dram_init, 891 /* TODO: unify all these dram functions? */ 892 #ifdef CONFIG_ARM 893 dram_init, /* configure available RAM banks */ 894 #endif 895 #ifdef CONFIG_PPC 896 init_func_ram, 897 #endif 898 #ifdef CONFIG_POST 899 post_init_f, 900 #endif 901 INIT_FUNC_WATCHDOG_RESET 902 #if defined(CONFIG_SYS_DRAM_TEST) 903 testdram, 904 #endif /* CONFIG_SYS_DRAM_TEST */ 905 INIT_FUNC_WATCHDOG_RESET 906 907 #ifdef CONFIG_POST 908 init_post, 909 #endif 910 INIT_FUNC_WATCHDOG_RESET 911 /* 912 * Now that we have DRAM mapped and working, we can 913 * relocate the code and continue running from DRAM. 914 * 915 * Reserve memory at end of RAM for (top down in that order): 916 * - area that won't get touched by U-Boot and Linux (optional) 917 * - kernel log buffer 918 * - protected RAM 919 * - LCD framebuffer 920 * - monitor code 921 * - board info struct 922 */ 923 setup_dest_addr, 924 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR) 925 reserve_logbuffer, 926 #endif 927 #ifdef CONFIG_PRAM 928 reserve_pram, 929 #endif 930 reserve_round_4k, 931 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \ 932 defined(CONFIG_ARM) 933 reserve_mmu, 934 #endif 935 #ifdef CONFIG_LCD 936 reserve_lcd, 937 #endif 938 /* TODO: Why the dependency on CONFIG_8xx? */ 939 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \ 940 && !defined(CONFIG_ARM) && !defined(CONFIG_X86) 941 reserve_video, 942 #endif 943 reserve_uboot, 944 #ifndef CONFIG_SPL_BUILD 945 reserve_malloc, 946 reserve_board, 947 #endif 948 setup_machine, 949 reserve_global_data, 950 reserve_fdt, 951 reserve_stacks, 952 setup_dram_config, 953 show_dram_config, 954 #ifdef CONFIG_PPC 955 setup_board_part1, 956 INIT_FUNC_WATCHDOG_RESET 957 setup_board_part2, 958 #endif 959 setup_baud_rate, 960 display_new_sp, 961 #ifdef CONFIG_SYS_EXTBDINFO 962 setup_board_extra, 963 #endif 964 INIT_FUNC_WATCHDOG_RESET 965 reloc_fdt, 966 setup_reloc, 967 #ifndef CONFIG_ARM 968 jump_to_copy, 969 #endif 970 NULL, 971 }; 972 973 void board_init_f(ulong boot_flags) 974 { 975 #ifndef CONFIG_X86 976 gd_t data; 977 978 gd = &data; 979 #endif 980 981 gd->flags = boot_flags; 982 983 if (initcall_run_list(init_sequence_f)) 984 hang(); 985 986 #ifndef CONFIG_ARM 987 /* NOTREACHED - jump_to_copy() does not return */ 988 hang(); 989 #endif 990 } 991 992 #ifdef CONFIG_X86 993 /* 994 * For now this code is only used on x86. 995 * 996 * init_sequence_f_r is the list of init functions which are run when 997 * U-Boot is executing from Flash with a semi-limited 'C' environment. 998 * The following limitations must be considered when implementing an 999 * '_f_r' function: 1000 * - 'static' variables are read-only 1001 * - Global Data (gd->xxx) is read/write 1002 * 1003 * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if 1004 * supported). It _should_, if possible, copy global data to RAM and 1005 * initialise the CPU caches (to speed up the relocation process) 1006 * 1007 * NOTE: At present only x86 uses this route, but it is intended that 1008 * all archs will move to this when generic relocation is implemented. 1009 */ 1010 static init_fnc_t init_sequence_f_r[] = { 1011 init_cache_f_r, 1012 copy_uboot_to_ram, 1013 clear_bss, 1014 do_elf_reloc_fixups, 1015 1016 NULL, 1017 }; 1018 1019 void board_init_f_r(void) 1020 { 1021 if (initcall_run_list(init_sequence_f_r)) 1022 hang(); 1023 1024 /* 1025 * U-Boot has been copied into SDRAM, the BSS has been cleared etc. 1026 * Transfer execution from Flash to RAM by calculating the address 1027 * of the in-RAM copy of board_init_r() and calling it 1028 */ 1029 (board_init_r + gd->reloc_off)(gd, gd->relocaddr); 1030 1031 /* NOTREACHED - board_init_r() does not return */ 1032 hang(); 1033 } 1034 #endif /* CONFIG_X86 */ 1035 1036 void hang(void) 1037 { 1038 puts("### ERROR ### Please RESET the board ###\n"); 1039 #ifdef CONFIG_SANDBOX 1040 os_exit(0); 1041 #else 1042 for (;;); 1043 #endif 1044 } 1045