arch/blackfin/lib/board.c

   1 /*
   2  * U-boot - board.c First C file to be called contains init routines
   3  *
   4  * Copyright (c) 2005-2008 Analog Devices Inc.
   5  *
   6  * (C) Copyright 2000-2004
   7  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   8  *
   9  * Licensed under the GPL-2 or later.
  10  */
  11
  12 #include <common.h>
  13 #include <command.h>
  14 #include <stdio_dev.h>
  15 #include <serial.h>
  16 #include <environment.h>
  17 #include <malloc.h>
  18 #include <mmc.h>
  19 #include <net.h>
  20 #include <status_led.h>
  21 #include <version.h>
  22
  23 #include <asm/cplb.h>
  24 #include <asm/mach-common/bits/mpu.h>
  25 #include <kgdb.h>
  26
  27 #ifdef CONFIG_CMD_NAND
  28 #include <nand.h>       /* cannot even include nand.h if it isnt configured */
  29 #endif
  30
  31 #ifdef CONFIG_BITBANGMII
  32 #include <miiphy.h>
  33 #endif
  34
  35 #if defined(CONFIG_POST)
  36 #include <post.h>
  37 int post_flag;
  38 #endif
  39
  40 #if defined(CONFIG_SYS_I2C)
  41 #include <i2c.h>
  42 #endif
  43
  44 DECLARE_GLOBAL_DATA_PTR;
  45
  46 __attribute__((always_inline))
  47 static inline void serial_early_puts(const char *s)
  48 {
  49 #ifdef CONFIG_DEBUG_EARLY_SERIAL
  50         serial_puts("Early: ");
  51         serial_puts(s);
  52 #endif
  53 }
  54
  55 static int display_banner(void)
  56 {
  57         display_options();
  58         printf("CPU:   ADSP %s "
  59                 "(Detected Rev: 0.%d) "
  60                 "(%s boot)\n",
  61                 gd->bd->bi_cpu,
  62                 bfin_revid(),
  63                 get_bfin_boot_mode(CONFIG_BFIN_BOOT_MODE));
  64         return 0;
  65 }
  66
  67 static int init_baudrate(void)
  68 {
  69         gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
  70         return 0;
  71 }
  72
  73 static void display_global_data(void)
  74 {
  75         bd_t *bd;
  76
  77 #ifndef CONFIG_DEBUG_EARLY_SERIAL
  78         return;
  79 #endif
  80
  81         bd = gd->bd;
  82         printf(" gd: %p\n", gd);
  83         printf(" |-flags: %lx\n", gd->flags);
  84         printf(" |-board_type: %lx\n", gd->arch.board_type);
  85         printf(" |-baudrate: %u\n", gd->baudrate);
  86         printf(" |-have_console: %lx\n", gd->have_console);
  87         printf(" |-ram_size: %lx\n", gd->ram_size);
  88         printf(" |-env_addr: %lx\n", gd->env_addr);
  89         printf(" |-env_valid: %lx\n", gd->env_valid);
  90         printf(" |-jt(%p): %p\n", gd->jt, *(gd->jt));
  91         printf(" \\-bd: %p\n", gd->bd);
  92         printf("   |-bi_baudrate: %x\n", bd->bi_baudrate);
  93         printf("   |-bi_boot_params: %lx\n", bd->bi_boot_params);
  94         printf("   |-bi_memstart: %lx\n", bd->bi_memstart);
  95         printf("   |-bi_memsize: %lx\n", bd->bi_memsize);
  96         printf("   |-bi_flashstart: %lx\n", bd->bi_flashstart);
  97         printf("   |-bi_flashsize: %lx\n", bd->bi_flashsize);
  98         printf("   \\-bi_flashoffset: %lx\n", bd->bi_flashoffset);
  99 }
 100
 101 #define CPLB_PAGE_SIZE (4 * 1024 * 1024)
 102 #define CPLB_PAGE_MASK (~(CPLB_PAGE_SIZE - 1))
 103 #if defined(__ADSPBF60x__)
 104 #define CPLB_EX_PAGE_SIZE (16 * 1024 * 1024)
 105 #define CPLB_EX_PAGE_MASK (~(CPLB_EX_PAGE_SIZE - 1))
 106 #else
 107 #define CPLB_EX_PAGE_SIZE CPLB_PAGE_SIZE
 108 #define CPLB_EX_PAGE_MASK CPLB_PAGE_MASK
 109 #endif
 110 void init_cplbtables(void)
 111 {
 112         volatile uint32_t *ICPLB_ADDR, *ICPLB_DATA;
 113         volatile uint32_t *DCPLB_ADDR, *DCPLB_DATA;
 114         uint32_t extern_memory;
 115         size_t i;
 116
 117         void icplb_add(uint32_t addr, uint32_t data)
 118         {
 119                 *(ICPLB_ADDR + i) = addr;
 120                 *(ICPLB_DATA + i) = data;
 121         }
 122         void dcplb_add(uint32_t addr, uint32_t data)
 123         {
 124                 *(DCPLB_ADDR + i) = addr;
 125                 *(DCPLB_DATA + i) = data;
 126         }
 127
 128         /* populate a few common entries ... we'll let
 129          * the memory map and cplb exception handler do
 130          * the rest of the work.
 131          */
 132         i = 0;
 133         ICPLB_ADDR = (uint32_t *)ICPLB_ADDR0;
 134         ICPLB_DATA = (uint32_t *)ICPLB_DATA0;
 135         DCPLB_ADDR = (uint32_t *)DCPLB_ADDR0;
 136         DCPLB_DATA = (uint32_t *)DCPLB_DATA0;
 137
 138         icplb_add(0xFFA00000, L1_IMEMORY);
 139         dcplb_add(0xFF800000, L1_DMEMORY);
 140         ++i;
 141 #if defined(__ADSPBF60x__)
 142         icplb_add(0x0, 0x0);
 143         dcplb_add(CONFIG_SYS_FLASH_BASE, SDRAM_EBIU);
 144         ++i;
 145 #endif
 146
 147         if (CONFIG_MEM_SIZE) {
 148                 uint32_t mbase = CONFIG_SYS_MONITOR_BASE;
 149                 uint32_t mend  = mbase + CONFIG_SYS_MONITOR_LEN;
 150                 mbase &= CPLB_PAGE_MASK;
 151                 mend &= CPLB_PAGE_MASK;
 152
 153                 icplb_add(mbase, SDRAM_IKERNEL);
 154                 dcplb_add(mbase, SDRAM_DKERNEL);
 155                 ++i;
 156
 157                 /*
 158                  * If the monitor crosses a 4 meg boundary, we'll need
 159                  * to lock two entries for it.  We assume it doesn't
 160                  * cross two 4 meg boundaries ...
 161                  */
 162                 if (mbase != mend) {
 163                         icplb_add(mend, SDRAM_IKERNEL);
 164                         dcplb_add(mend, SDRAM_DKERNEL);
 165                         ++i;
 166                 }
 167         }
 168
 169 #ifndef __ADSPBF60x__
 170         icplb_add(0x20000000, SDRAM_INON_CHBL);
 171         dcplb_add(0x20000000, SDRAM_EBIU);
 172         ++i;
 173 #endif
 174
 175         /* Add entries for the rest of external RAM up to the bootrom */
 176         extern_memory = 0;
 177
 178 #ifdef CONFIG_DEBUG_NULL_PTR
 179         icplb_add(extern_memory, (SDRAM_IKERNEL & ~PAGE_SIZE_MASK) | PAGE_SIZE_1KB);
 180         dcplb_add(extern_memory, (SDRAM_DKERNEL & ~PAGE_SIZE_MASK) | PAGE_SIZE_1KB);
 181         ++i;
 182         icplb_add(extern_memory, SDRAM_IKERNEL);
 183         dcplb_add(extern_memory, SDRAM_DKERNEL);
 184         extern_memory += CPLB_PAGE_SIZE;
 185         ++i;
 186 #endif
 187
 188         while (i < 16 && extern_memory <
 189                 (CONFIG_SYS_MONITOR_BASE & CPLB_EX_PAGE_MASK)) {
 190                 icplb_add(extern_memory, SDRAM_IGENERIC);
 191                 dcplb_add(extern_memory, SDRAM_DGENERIC);
 192                 extern_memory += CPLB_EX_PAGE_SIZE;
 193                 ++i;
 194         }
 195         while (i < 16) {
 196                 icplb_add(0, 0);
 197                 dcplb_add(0, 0);
 198                 ++i;
 199         }
 200 }
 201
 202 static int global_board_data_init(void)
 203 {
 204 #ifndef CONFIG_SYS_GBL_DATA_ADDR
 205 # define CONFIG_SYS_GBL_DATA_ADDR 0
 206 #endif
 207 #ifndef CONFIG_SYS_BD_INFO_ADDR
 208 # define CONFIG_SYS_BD_INFO_ADDR 0
 209 #endif
 210
 211         bd_t *bd;
 212
 213         if (CONFIG_SYS_GBL_DATA_ADDR) {
 214                 gd = (gd_t *) (CONFIG_SYS_GBL_DATA_ADDR);
 215                 memset((void *)gd, 0, GENERATED_GBL_DATA_SIZE);
 216         } else {
 217                 static gd_t _bfin_gd;
 218                 gd = &_bfin_gd;
 219         }
 220
 221         if (CONFIG_SYS_BD_INFO_ADDR) {
 222                 bd = (bd_t *) (CONFIG_SYS_BD_INFO_ADDR);
 223                 memset(bd, 0, GENERATED_BD_INFO_SIZE);
 224         } else {
 225                 static bd_t _bfin_bd;
 226                 bd = &_bfin_bd;
 227         }
 228         gd->bd = bd;
 229
 230         bd->bi_r_version = version_string;
 231         bd->bi_cpu = __stringify(CONFIG_BFIN_CPU);
 232         bd->bi_board_name = BFIN_BOARD_NAME;
 233         bd->bi_vco = get_vco();
 234         bd->bi_cclk = get_cclk();
 235         bd->bi_sclk = get_sclk();
 236         bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
 237         bd->bi_memsize = CONFIG_SYS_MAX_RAM_SIZE;
 238         bd->bi_baudrate = (gd->baudrate > 0)
 239                 ? simple_strtoul(gd->baudrate, NULL, 10) : CONFIG_BAUDRATE;
 240
 241         return 0;
 242 }
 243
 244 /*
 245  * All attempts to come up with a "common" initialization sequence
 246  * that works for all boards and architectures failed: some of the
 247  * requirements are just _too_ different. To get rid of the resulting
 248  * mess of board dependend #ifdef'ed code we now make the whole
 249  * initialization sequence configurable to the user.
 250  *
 251  * The requirements for any new initalization function is simple: it
 252  * receives a pointer to the "global data" structure as it's only
 253  * argument, and returns an integer return code, where 0 means
 254  * "continue" and != 0 means "fatal error, hang the system".
 255  */
 256
 257 extern int watchdog_init(void);
 258 extern int exception_init(void);
 259 extern int irq_init(void);
 260 extern int timer_init(void);
 261
 262 void board_init_f(ulong bootflag)
 263 {
 264         char buf[32];
 265
 266 #ifdef CONFIG_BOARD_EARLY_INIT_F
 267         serial_early_puts("Board early init flash\n");
 268         board_early_init_f();
 269 #endif
 270
 271         serial_early_puts("Init CPLB tables\n");
 272         init_cplbtables();
 273
 274         serial_early_puts("Exceptions setup\n");
 275         exception_init();
 276
 277 #ifndef CONFIG_ICACHE_OFF
 278         serial_early_puts("Turn on ICACHE\n");
 279         icache_enable();
 280 #endif
 281 #ifndef CONFIG_DCACHE_OFF
 282         serial_early_puts("Turn on DCACHE\n");
 283         dcache_enable();
 284 #endif
 285
 286 #ifdef CONFIG_HW_WATCHDOG
 287         serial_early_puts("Setting up external watchdog\n");
 288         hw_watchdog_init();
 289 #endif
 290
 291 #ifdef DEBUG
 292         if (GENERATED_GBL_DATA_SIZE < sizeof(*gd))
 293                 hang();
 294 #endif
 295         serial_early_puts("Init global data\n");
 296
 297         global_board_data_init();
 298
 299         /* Initialize */
 300         serial_early_puts("IRQ init\n");
 301         irq_init();
 302         serial_early_puts("Environment init\n");
 303         env_init();
 304         serial_early_puts("Baudrate init\n");
 305         init_baudrate();
 306         serial_early_puts("Serial init\n");
 307         serial_init();
 308         serial_initialize();
 309         serial_early_puts("Console init flash\n");
 310         console_init_f();
 311         serial_early_puts("End of early debugging\n");
 312         display_banner();
 313
 314         checkboard();
 315         timer_init();
 316
 317         printf("Clock: VCO: %s MHz, ", strmhz(buf, get_vco()));
 318         printf("Core: %s MHz, ", strmhz(buf, get_cclk()));
 319 #if defined(__ADSPBF60x__)
 320         printf("System0: %s MHz, ", strmhz(buf, get_sclk0()));
 321         printf("System1: %s MHz, ", strmhz(buf, get_sclk1()));
 322         printf("Dclk: %s MHz\n", strmhz(buf, get_dclk()));
 323 #else
 324         printf("System: %s MHz\n", strmhz(buf, get_sclk()));
 325 #endif
 326
 327         if (CONFIG_MEM_SIZE) {
 328                 printf("RAM:   ");
 329                 print_size(gd->bd->bi_memsize, "\n");
 330         }
 331
 332 #if defined(CONFIG_POST)
 333         post_init_f();
 334         post_bootmode_init();
 335         post_run(NULL, POST_ROM | post_bootmode_get(0));
 336 #endif
 337
 338         board_init_r((gd_t *) gd, 0x20000010);
 339 }
 340
 341 static void board_net_init_r(bd_t *bd)
 342 {
 343 #ifdef CONFIG_BITBANGMII
 344         bb_miiphy_init();
 345 #endif
 346 #ifdef CONFIG_CMD_NET
 347         printf("Net:   ");
 348         eth_initialize(bd);
 349 #endif
 350 }
 351
 352 void board_init_r(gd_t * id, ulong dest_addr)
 353 {
 354         bd_t *bd;
 355         gd = id;
 356         gd->flags |= GD_FLG_RELOC;      /* tell others: relocation done */
 357         bd = gd->bd;
 358
 359 #if defined(CONFIG_POST)
 360         post_output_backlog();
 361 #endif
 362
 363         /* initialize malloc() area */
 364         mem_malloc_init(CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN);
 365
 366 #if     !defined(CONFIG_SYS_NO_FLASH)
 367         /* Initialize the flash and protect u-boot by default */
 368         extern flash_info_t flash_info[];
 369         puts("Flash: ");
 370         ulong size = flash_init();
 371         print_size(size, "\n");
 372         flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_FLASH_BASE,
 373                 CONFIG_SYS_FLASH_BASE + CONFIG_SYS_MONITOR_LEN - 1,
 374                 &flash_info[0]);
 375         bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
 376         bd->bi_flashsize = size;
 377         bd->bi_flashoffset = 0;
 378 #else
 379         bd->bi_flashstart = 0;
 380         bd->bi_flashsize = 0;
 381         bd->bi_flashoffset = 0;
 382 #endif
 383
 384 #ifdef CONFIG_CMD_NAND
 385         puts("NAND:  ");
 386         nand_init();            /* go init the NAND */
 387 #endif
 388
 389 #ifdef CONFIG_GENERIC_MMC
 390         puts("MMC:   ");
 391         mmc_initialize(bd);
 392 #endif
 393
 394 #if defined(CONFIG_SYS_I2C)
 395         i2c_reloc_fixup();
 396 #endif
 397         /* relocate environment function pointers etc. */
 398         env_relocate();
 399
 400         /* Initialize stdio devices */
 401         stdio_init();
 402         jumptable_init();
 403
 404         /* Initialize the console (after the relocation and devices init) */
 405         console_init_r();
 406
 407 #ifdef CONFIG_CMD_KGDB
 408         puts("KGDB:  ");
 409         kgdb_init();
 410 #endif
 411
 412 #ifdef CONFIG_STATUS_LED
 413         status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
 414         status_led_set(STATUS_LED_CRASH, STATUS_LED_OFF);
 415 #endif
 416
 417         /* Initialize from environment */
 418         load_addr = getenv_ulong("loadaddr", 16, load_addr);
 419
 420 #if defined(CONFIG_MISC_INIT_R)
 421         /* miscellaneous platform dependent initialisations */
 422         misc_init_r();
 423 #endif
 424
 425         board_net_init_r(bd);
 426
 427         display_global_data();
 428
 429 #if defined(CONFIG_POST)
 430         if (post_flag)
 431                 post_run(NULL, POST_RAM | post_bootmode_get(0));
 432 #endif
 433
 434         if (CONFIG_MEM_SIZE && bfin_os_log_check()) {
 435                 puts("\nLog buffer from operating system:\n");
 436                 bfin_os_log_dump();
 437                 puts("\n");
 438         }
 439
 440         /* main_loop() can return to retry autoboot, if so just run it again. */
 441         for (;;)
 442                 main_loop();
 443 }