lib_blackfin/board.c

   1 /*
   2  * U-boot - board.c First C file to be called contains init routines
   3  *
   4  * Copyright (c) 2005-2007 Analog Devices Inc.
   5  *
   6  * (C) Copyright 2000-2004
   7  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   8  *
   9  * See file CREDITS for list of people who contributed to this
  10  * project.
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License as
  14  * published by the Free Software Foundation; either version 2 of
  15  * the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
  25  * MA 02110-1301 USA
  26  */
  27
  28 #include <common.h>
  29 #include <command.h>
  30 #include <malloc.h>
  31 #include <devices.h>
  32 #include <version.h>
  33 #include <net.h>
  34 #include <environment.h>
  35 #include <i2c.h>
  36 #include "blackfin_board.h"
  37 #include <asm/cplb.h>
  38 #include "../drivers/net/smc91111.h"
  39
  40 #if defined(CONFIG_BF537)&&defined(CONFIG_POST)
  41 #include <post.h>
  42 int post_flag;
  43 #endif
  44
  45 DECLARE_GLOBAL_DATA_PTR;
  46
  47 #ifndef CFG_NO_FLASH
  48 extern flash_info_t flash_info[];
  49 #endif
  50
  51 static inline u_long get_vco(void)
  52 {
  53         u_long msel;
  54         u_long vco;
  55
  56         msel = (*pPLL_CTL >> 9) & 0x3F;
  57         if (0 == msel)
  58                 msel = 64;
  59
  60         vco = CONFIG_CLKIN_HZ;
  61         vco >>= (1 & *pPLL_CTL);        /* DF bit */
  62         vco = msel * vco;
  63         return vco;
  64 }
  65
  66 /*Get the Core clock*/
  67 u_long get_cclk(void)
  68 {
  69         u_long csel, ssel;
  70         if (*pPLL_STAT & 0x1)
  71                 return CONFIG_CLKIN_HZ;
  72
  73         ssel = *pPLL_DIV;
  74         csel = ((ssel >> 4) & 0x03);
  75         ssel &= 0xf;
  76         if (ssel && ssel < (1 << csel)) /* SCLK > CCLK */
  77                 return get_vco() / ssel;
  78         return get_vco() >> csel;
  79 }
  80
  81 /* Get the System clock */
  82 u_long get_sclk(void)
  83 {
  84         u_long ssel;
  85
  86         if (*pPLL_STAT & 0x1)
  87                 return CONFIG_CLKIN_HZ;
  88
  89         ssel = (*pPLL_DIV & 0xf);
  90
  91         return get_vco() / ssel;
  92 }
  93
  94 static void mem_malloc_init(void)
  95 {
  96         mem_malloc_start = CFG_MALLOC_BASE;
  97         mem_malloc_end = (CFG_MALLOC_BASE + CFG_MALLOC_LEN);
  98         mem_malloc_brk = mem_malloc_start;
  99         memset((void *)mem_malloc_start, 0, mem_malloc_end - mem_malloc_start);
 100 }
 101
 102 void *sbrk(ptrdiff_t increment)
 103 {
 104         ulong old = mem_malloc_brk;
 105         ulong new = old + increment;
 106
 107         if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
 108                 return (NULL);
 109         }
 110         mem_malloc_brk = new;
 111
 112         return ((void *)old);
 113 }
 114
 115 static int display_banner(void)
 116 {
 117         sprintf(version_string, VERSION_STRING_FORMAT, VERSION_STRING);
 118         printf("%s\n", version_string);
 119         printf("CPU:   ADSP " MK_STR(CONFIG_BFIN_CPU) " (Detected Rev: 0.%d)\n", bfin_revid());
 120         return (0);
 121 }
 122
 123 static void display_flash_config(ulong size)
 124 {
 125         puts("FLASH:  ");
 126         print_size(size, "\n");
 127         return;
 128 }
 129
 130 static int init_baudrate(void)
 131 {
 132         char tmp[64];
 133         int i = getenv_r("baudrate", tmp, sizeof(tmp));
 134         gd->bd->bi_baudrate = gd->baudrate = (i > 0)
 135             ? (int)simple_strtoul(tmp, NULL, 10)
 136             : CONFIG_BAUDRATE;
 137         return (0);
 138 }
 139
 140 #ifdef DEBUG
 141 static void display_global_data(void)
 142 {
 143         bd_t *bd;
 144         bd = gd->bd;
 145         printf("--flags:%x\n", gd->flags);
 146         printf("--board_type:%x\n", gd->board_type);
 147         printf("--baudrate:%x\n", gd->baudrate);
 148         printf("--have_console:%x\n", gd->have_console);
 149         printf("--ram_size:%x\n", gd->ram_size);
 150         printf("--reloc_off:%x\n", gd->reloc_off);
 151         printf("--env_addr:%x\n", gd->env_addr);
 152         printf("--env_valid:%x\n", gd->env_valid);
 153         printf("--bd:%x %x\n", gd->bd, bd);
 154         printf("---bi_baudrate:%x\n", bd->bi_baudrate);
 155         printf("---bi_ip_addr:%x\n", bd->bi_ip_addr);
 156         printf("---bi_enetaddr:%x %x %x %x %x %x\n",
 157                bd->bi_enetaddr[0],
 158                bd->bi_enetaddr[1],
 159                bd->bi_enetaddr[2],
 160                bd->bi_enetaddr[3], bd->bi_enetaddr[4], bd->bi_enetaddr[5]);
 161         printf("---bi_arch_number:%x\n", bd->bi_arch_number);
 162         printf("---bi_boot_params:%x\n", bd->bi_boot_params);
 163         printf("---bi_memstart:%x\n", bd->bi_memstart);
 164         printf("---bi_memsize:%x\n", bd->bi_memsize);
 165         printf("---bi_flashstart:%x\n", bd->bi_flashstart);
 166         printf("---bi_flashsize:%x\n", bd->bi_flashsize);
 167         printf("---bi_flashoffset:%x\n", bd->bi_flashoffset);
 168         printf("--jt:%x *:%x\n", gd->jt, *(gd->jt));
 169 }
 170 #endif
 171
 172 /* we cover everything with 4 meg pages, and need an extra for L1 */
 173 unsigned int icplb_table[page_descriptor_table_size][2];
 174 unsigned int dcplb_table[page_descriptor_table_size][2];
 175
 176 void init_cplbtables(void)
 177 {
 178         int i, j;
 179
 180         j = 0;
 181         icplb_table[j][0] = 0xFFA00000;
 182         icplb_table[j][1] = L1_IMEMORY;
 183         j++;
 184
 185         for (i = 0; i < CONFIG_MEM_SIZE / 4; i++) {
 186                 icplb_table[j][0] = (i * 4 * 1024 * 1024);
 187                 if (i * 4 * 1024 * 1024 <= CFG_MONITOR_BASE
 188                     && (i + 1) * 4 * 1024 * 1024 >= CFG_MONITOR_BASE) {
 189                         icplb_table[j][1] = SDRAM_IKERNEL;
 190                 } else {
 191                         icplb_table[j][1] = SDRAM_IGENERIC;
 192                 }
 193                 j++;
 194         }
 195 #if defined(CONFIG_BF561)
 196         /* MAC space */
 197         icplb_table[j][0] = 0x2C000000;
 198         icplb_table[j][1] = SDRAM_INON_CHBL;
 199         j++;
 200         /* Async Memory space */
 201         for (i = 0; i < 3; i++) {
 202                 icplb_table[j][0] = 0x20000000 + i * 4 * 1024 * 1024;
 203                 icplb_table[j][1] = SDRAM_INON_CHBL;
 204                 j++;
 205         }
 206 #else
 207         icplb_table[j][0] = 0x20000000;
 208         icplb_table[j][1] = SDRAM_INON_CHBL;
 209 #endif
 210         j = 0;
 211         dcplb_table[j][0] = 0xFF800000;
 212         dcplb_table[j][1] = L1_DMEMORY;
 213         j++;
 214
 215         for (i = 0; i < CONFIG_MEM_SIZE / 4; i++) {
 216                 dcplb_table[j][0] = (i * 4 * 1024 * 1024);
 217                 if (i * 4 * 1024 * 1024 <= CFG_MONITOR_BASE
 218                     && (i + 1) * 4 * 1024 * 1024 >= CFG_MONITOR_BASE) {
 219                         dcplb_table[j][1] = SDRAM_DKERNEL;
 220                 } else {
 221                         dcplb_table[j][1] = SDRAM_DGENERIC;
 222                 }
 223                 j++;
 224         }
 225
 226 #if defined(CONFIG_BF561)
 227         /* MAC space */
 228         dcplb_table[j][0] = 0x2C000000;
 229         dcplb_table[j][1] = SDRAM_EBIU;
 230         j++;
 231
 232         /* Flash space */
 233         for (i = 0; i < 3; i++) {
 234                 dcplb_table[j][0] = 0x20000000 + i * 4 * 1024 * 1024;
 235                 dcplb_table[j][1] = SDRAM_EBIU;
 236                 j++;
 237         }
 238 #else
 239         dcplb_table[j][0] = 0x20000000;
 240         dcplb_table[j][1] = SDRAM_EBIU;
 241 #endif
 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 void board_init_f(ulong bootflag)
 258 {
 259         ulong addr;
 260         bd_t *bd;
 261         int i;
 262
 263         init_cplbtables();
 264
 265         gd = (gd_t *) (CFG_GBL_DATA_ADDR);
 266         memset((void *)gd, 0, sizeof(gd_t));
 267
 268         /* Board data initialization */
 269         addr = (CFG_GBL_DATA_ADDR + sizeof(gd_t));
 270
 271         /* Align to 4 byte boundary */
 272         addr &= ~(4 - 1);
 273         bd = (bd_t *) addr;
 274         gd->bd = bd;
 275         memset((void *)bd, 0, sizeof(bd_t));
 276
 277         /* Initialize */
 278         init_IRQ();
 279         env_init();             /* initialize environment */
 280         init_baudrate();        /* initialze baudrate settings */
 281         serial_init();          /* serial communications setup */
 282         console_init_f();
 283 #ifdef CONFIG_ICACHE_ON
 284         icache_enable();
 285 #endif
 286 #ifdef CONFIG_DCACHE_ON
 287         dcache_enable();
 288 #endif
 289         display_banner();       /* say that we are here */
 290
 291         for (i = 0; i < page_descriptor_table_size; i++) {
 292                 debug
 293                     ("data (%02i)= 0x%08x : 0x%08x    intr = 0x%08x : 0x%08x\n",
 294                      i, dcplb_table[i][0], dcplb_table[i][1], icplb_table[i][0],
 295                      icplb_table[i][1]);
 296         }
 297
 298         checkboard();
 299 #if defined(CONFIG_RTC_BF533) && defined(CONFIG_CMD_DATE)
 300         rtc_init();
 301 #endif
 302         timer_init();
 303         printf("Clock: VCO: %lu MHz, Core: %lu MHz, System: %lu MHz\n",
 304                get_vco() / 1000000, get_cclk() / 1000000, get_sclk() / 1000000);
 305         printf("SDRAM: ");
 306         print_size(initdram(0), "\n");
 307 #if defined(CONFIG_BF537)&&defined(CONFIG_POST)
 308         post_init_f();
 309         post_bootmode_init();
 310         post_run(NULL, POST_ROM | post_bootmode_get(0));
 311 #endif
 312         board_init_r((gd_t *) gd, 0x20000010);
 313 }
 314
 315 #if defined(CONFIG_SOFT_I2C) || defined(CONFIG_HARD_I2C)
 316 static int init_func_i2c(void)
 317 {
 318         puts("I2C:   ");
 319         i2c_init(CFG_I2C_SPEED, CFG_I2C_SLAVE);
 320         puts("ready\n");
 321         return (0);
 322 }
 323 #endif
 324
 325 void board_init_r(gd_t * id, ulong dest_addr)
 326 {
 327         ulong size;
 328         extern void malloc_bin_reloc(void);
 329         char *s, *e;
 330         bd_t *bd;
 331         int i;
 332         gd = id;
 333         gd->flags |= GD_FLG_RELOC;      /* tell others: relocation done */
 334         bd = gd->bd;
 335
 336 #if    defined(CONFIG_BF537) && defined(CONFIG_POST)
 337         post_output_backlog();
 338         post_reloc();
 339 #endif
 340
 341 #if     (CONFIG_STAMP || CONFIG_BF537 || CONFIG_EZKIT561) && !defined(CFG_NO_FLASH)
 342         /* There are some other pointer constants we must deal with */
 343         /* configure available FLASH banks */
 344         size = flash_init();
 345         display_flash_config(size);
 346         flash_protect(FLAG_PROTECT_SET, CFG_FLASH_BASE,
 347                       CFG_FLASH_BASE + 0x1ffff, &flash_info[0]);
 348         bd->bi_flashstart = CFG_FLASH_BASE;
 349         bd->bi_flashsize = size;
 350         bd->bi_flashoffset = 0;
 351 #else
 352         bd->bi_flashstart = 0;
 353         bd->bi_flashsize = 0;
 354         bd->bi_flashoffset = 0;
 355 #endif
 356         /* initialize malloc() area */
 357         mem_malloc_init();
 358         malloc_bin_reloc();
 359
 360 #ifdef CONFIG_SPI
 361 # if ! defined(CFG_ENV_IS_IN_EEPROM)
 362         spi_init_f();
 363 # endif
 364         spi_init_r();
 365 #endif
 366
 367         /* relocate environment function pointers etc. */
 368         env_relocate();
 369
 370         /* board MAC address */
 371         s = getenv("ethaddr");
 372         for (i = 0; i < 6; ++i) {
 373                 bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0;
 374                 if (s)
 375                         s = (*e) ? e + 1 : e;
 376         }
 377
 378         /* IP Address */
 379         bd->bi_ip_addr = getenv_IPaddr("ipaddr");
 380
 381         /* Initialize devices */
 382         devices_init();
 383         jumptable_init();
 384
 385         /* Initialize the console (after the relocation and devices init) */
 386         console_init_r();
 387
 388         /* Initialize from environment */
 389         if ((s = getenv("loadaddr")) != NULL) {
 390                 load_addr = simple_strtoul(s, NULL, 16);
 391         }
 392 #if defined(CONFIG_CMD_NET)
 393         if ((s = getenv("bootfile")) != NULL) {
 394                 copy_filename(BootFile, s, sizeof(BootFile));
 395         }
 396 #endif
 397
 398 #if defined(CONFIG_CMD_NAND)
 399         puts("NAND:  ");
 400         nand_init();            /* go init the NAND */
 401 #endif
 402
 403 #if defined(CONFIG_MISC_INIT_R)
 404         /* miscellaneous platform dependent initialisations */
 405         misc_init_r();
 406 #endif
 407
 408 #ifdef CONFIG_CMD_NET
 409         printf("Net:    ");
 410         eth_initialize(bd);
 411 #endif
 412
 413 #ifdef CONFIG_DRIVER_SMC91111
 414 #ifdef SHARED_RESOURCES
 415         /* Switch to Ethernet */
 416         swap_to(ETHERNET);
 417 #endif
 418         if ((SMC_inw(BANK_SELECT) & UPPER_BYTE_MASK) != SMC_IDENT) {
 419                 printf("ERROR: Can't find SMC91111 at address %x\n",
 420                        SMC_BASE_ADDRESS);
 421         } else {
 422                 printf("Net:   SMC91111 at 0x%08X\n", SMC_BASE_ADDRESS);
 423         }
 424
 425 #ifdef SHARED_RESOURCES
 426         swap_to(FLASH);
 427 #endif
 428 #endif
 429 #if defined(CONFIG_SOFT_I2C) || defined(CONFIG_HARD_I2C)
 430         init_func_i2c();
 431 #endif
 432
 433 #ifdef DEBUG
 434         display_global_data();
 435 #endif
 436
 437 #if defined(CONFIG_BF537) && defined(CONFIG_POST)
 438         if (post_flag)
 439                 post_run(NULL, POST_RAM | post_bootmode_get(0));
 440 #endif
 441
 442         /* main_loop() can return to retry autoboot, if so just run it again. */
 443         for (;;) {
 444                 main_loop();
 445         }
 446 }
 447
 448 void hang(void)
 449 {
 450         puts("### ERROR ### Please RESET the board ###\n");
 451         for (;;) ;
 452 }