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 #ifdef CONFIG_HAS_DATAFLASH 31 #include <dataflash.h> 32 #endif 33 #include <environment.h> 34 #include <fdtdec.h> 35 #include <initcall.h> 36 #include <logbuff.h> 37 #include <malloc.h> 38 #include <mmc.h> 39 #include <nand.h> 40 #include <onenand_uboot.h> 41 #include <serial.h> 42 #include <stdio_dev.h> 43 #include <asm/sections.h> 44 45 DECLARE_GLOBAL_DATA_PTR; 46 47 ulong monitor_flash_len; 48 49 50 static int initr_reloc(void) 51 { 52 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */ 53 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r"); 54 55 return 0; 56 } 57 58 #ifdef CONFIG_ARM 59 /* 60 * Some of these functions are needed purely because the functions they 61 * call return void. If we change them to return 0, these stubs can go away. 62 */ 63 static int initr_caches(void) 64 { 65 /* Enable caches */ 66 enable_caches(); 67 return 0; 68 } 69 #endif 70 71 static int initr_reloc_global_data(void) 72 { 73 #ifdef CONFIG_SYS_SYM_OFFSETS 74 monitor_flash_len = _end_ofs; 75 #else 76 monitor_flash_len = (ulong)&__init_end - gd->dest_addr; 77 #endif 78 } 79 80 static int initr_serial(void) 81 { 82 serial_initialize(); 83 return 0; 84 } 85 86 #ifdef CONFIG_LOGBUFFER 87 unsigned long logbuffer_base(void) 88 { 89 return gd->ram_top - LOGBUFF_LEN; 90 } 91 92 static int initr_logbuffer(void) 93 { 94 logbuff_init_ptrs(); 95 return 0; 96 } 97 #endif 98 99 #ifdef CONFIG_POST 100 static int initr_post_backlog(void) 101 { 102 post_output_backlog(); 103 return 0; 104 } 105 #endif 106 107 static int initr_malloc(void) 108 { 109 ulong malloc_start; 110 111 /* The malloc area is immediately below the monitor copy in DRAM */ 112 malloc_start = gd->dest_addr - TOTAL_MALLOC_LEN; 113 mem_malloc_init(malloc_start, TOTAL_MALLOC_LEN); 114 return 0; 115 } 116 117 __weak int power_init_board(void) 118 { 119 return 0; 120 } 121 122 static int initr_announce(void) 123 { 124 debug("Now running in RAM - U-Boot at: %08lx\n", gd->dest_addr); 125 return 0; 126 } 127 128 #if !defined(CONFIG_SYS_NO_FLASH) 129 static int initr_flash(void) 130 { 131 ulong flash_size; 132 133 puts("Flash: "); 134 135 flash_size = flash_init(); 136 if (flash_size <= 0) { 137 puts("*** failed ***\n"); 138 return -1; 139 } 140 print_size(flash_size, ""); 141 #ifdef CONFIG_SYS_FLASH_CHECKSUM 142 /* 143 * Compute and print flash CRC if flashchecksum is set to 'y' 144 * 145 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX 146 */ 147 if (getenv_yesno("flashchecksum") == 1) { 148 printf(" CRC: %08X", crc32(0, 149 (const unsigned char *) CONFIG_SYS_FLASH_BASE, 150 flash_size)); 151 } 152 #endif /* CONFIG_SYS_FLASH_CHECKSUM */ 153 putc('\n'); 154 155 return 0; 156 } 157 #endif 158 159 #ifdef CONFIG_CMD_NAND 160 /* go init the NAND */ 161 int initr_nand(void) 162 { 163 puts("NAND: "); 164 nand_init(); 165 return 0; 166 } 167 #endif 168 169 #if defined(CONFIG_CMD_ONENAND) 170 /* go init the NAND */ 171 int initr_onenand(void) 172 { 173 puts("NAND: "); 174 onenand_init(); 175 return 0; 176 } 177 #endif 178 179 #ifdef CONFIG_GENERIC_MMC 180 int initr_mmc(void) 181 { 182 puts("MMC: "); 183 mmc_initialize(gd->bd); 184 return 0; 185 } 186 #endif 187 188 #ifdef CONFIG_HAS_DATAFLASH 189 int initr_dataflash(void) 190 { 191 AT91F_DataflashInit(); 192 dataflash_print_info(); 193 return 0; 194 } 195 #endif 196 197 /* 198 * Tell if it's OK to load the environment early in boot. 199 * 200 * If CONFIG_OF_CONFIG is defined, we'll check with the FDT to see 201 * if this is OK (defaulting to saying it's OK). 202 * 203 * NOTE: Loading the environment early can be a bad idea if security is 204 * important, since no verification is done on the environment. 205 * 206 * @return 0 if environment should not be loaded, !=0 if it is ok to load 207 */ 208 static int should_load_env(void) 209 { 210 #ifdef CONFIG_OF_CONTROL 211 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1); 212 #elif defined CONFIG_DELAY_ENVIRONMENT 213 return 0; 214 #else 215 return 1; 216 #endif 217 } 218 219 static int initr_env(void) 220 { 221 /* initialize environment */ 222 if (should_load_env()) 223 env_relocate(); 224 else 225 set_default_env(NULL); 226 227 /* Initialize from environment */ 228 load_addr = getenv_ulong("loadaddr", 16, load_addr); 229 return 0; 230 } 231 232 static int initr_jumptable(void) 233 { 234 jumptable_init(); 235 return 0; 236 } 237 238 #if defined(CONFIG_API) 239 static int initr_api(void) 240 { 241 /* Initialize API */ 242 api_init(); 243 return 0; 244 } 245 #endif 246 247 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE 248 static int show_model_r(void) 249 { 250 /* Put this here so it appears on the LCD, now it is ready */ 251 # ifdef CONFIG_OF_CONTROL 252 const char *model; 253 254 model = (char *)fdt_getprop(gd->fdt_blob, 0, "model", NULL); 255 printf("Model: %s\n", model ? model : "<unknown>"); 256 # else 257 checkboard(); 258 # endif 259 } 260 #endif 261 262 /* enable exceptions */ 263 static int initr_enable_interrupts(void) 264 { 265 enable_interrupts(); 266 return 0; 267 } 268 269 #ifdef CONFIG_CMD_NET 270 static int initr_ethaddr(void) 271 { 272 273 return 0; 274 } 275 #endif /* CONFIG_CMD_NET */ 276 277 #ifdef CONFIG_BITBANGMII 278 static int initr_bbmii(void) 279 { 280 bb_miiphy_init(); 281 return 0; 282 } 283 #endif 284 285 #ifdef CONFIG_CMD_NET 286 static int initr_net(void) 287 { 288 puts("Net: "); 289 eth_initialize(gd->bd); 290 #if defined(CONFIG_RESET_PHY_R) 291 debug("Reset Ethernet PHY\n"); 292 reset_phy(); 293 #endif 294 return 0; 295 } 296 #endif 297 298 #ifdef CONFIG_POST 299 static int initr_post(void) 300 { 301 post_run(NULL, POST_RAM | post_bootmode_get(0)); 302 return 0; 303 } 304 #endif 305 306 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER) 307 /* 308 * Export available size of memory for Linux, taking into account the 309 * protected RAM at top of memory 310 */ 311 int initr_mem(void) 312 { 313 ulong pram = 0; 314 char memsz[32]; 315 316 # ifdef CONFIG_PRAM 317 pram = getenv_ulong("pram", 10, CONFIG_PRAM); 318 # endif 319 # if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR) 320 /* Also take the logbuffer into account (pram is in kB) */ 321 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024; 322 # endif 323 sprintf(memsz, "%ldk", (gd->ram_size / 1024) - pram); 324 setenv("mem", memsz); 325 } 326 #endif 327 328 static int run_main_loop(void) 329 { 330 /* main_loop() can return to retry autoboot, if so just run it again */ 331 for (;;) 332 main_loop(); 333 return 0; 334 } 335 336 /* 337 * Over time we hope to remove these functions with code fragments and 338 * stub funtcions, and instead call the relevant function directly. 339 * 340 * We also hope to remove most of the driver-related init and do it if/when 341 * the driver is later used. 342 */ 343 init_fnc_t init_sequence_r[] = { 344 initr_reloc, 345 #ifdef CONFIG_ARM 346 initr_caches, 347 board_init, /* Setup chipselects */ 348 #endif 349 initr_reloc_global_data, 350 initr_serial, 351 initr_announce, 352 #ifdef CONFIG_LOGBUFFER 353 initr_logbuffer, 354 #endif 355 #ifdef CONFIG_POST 356 initr_post_backlog, 357 #endif 358 initr_malloc, 359 #ifdef CONFIG_ARCH_EARLY_INIT_R 360 arch_early_init_r, 361 #endif 362 power_init_board, 363 #ifndef CONFIG_SYS_NO_FLASH 364 initr_flash, 365 #endif 366 #ifdef CONFIG_CMD_NAND 367 initr_nand, 368 #endif 369 #ifdef CONFIG_CMD_ONENAND 370 initr_onenand, 371 #endif 372 #ifdef CONFIG_GENERIC_MMC 373 initr_mmc, 374 #endif 375 #ifdef CONFIG_HAS_DATAFLASH 376 initr_dataflash, 377 #endif 378 initr_env, 379 stdio_init, 380 initr_jumptable, 381 #ifdef CONFIG_API 382 initr_api, 383 #endif 384 console_init_r, /* fully init console as a device */ 385 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE 386 show_model_r, 387 #endif 388 #ifdef CONFIG_ARCH_MISC_INIT 389 arch_misc_init, /* miscellaneous arch-dependent init */ 390 #endif 391 #ifdef CONFIG_MISC_INIT_R 392 misc_init_r, /* miscellaneous platform-dependent init */ 393 #endif 394 interrupt_init, 395 initr_enable_interrupts, 396 #ifdef CONFIG_CMD_NET 397 initr_ethaddr, 398 #endif 399 #ifdef CONFIG_BOARD_LATE_INIT 400 board_late_init, 401 #endif 402 #ifdef CONFIG_BITBANGMII 403 initr_bbmii, 404 #endif 405 #ifdef CONFIG_CMD_NET 406 initr_net, 407 #endif 408 #ifdef CONFIG_POST 409 initr_post, 410 #endif 411 run_main_loop, 412 }; 413 414 void board_init_r(gd_t *new_gd, ulong dest_addr) 415 { 416 gd = new_gd; 417 if (initcall_run_list(init_sequence_r)) 418 hang(); 419 420 /* NOTREACHED - run_main_loop() does not return */ 421 hang(); 422 } 423