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