LXR uboot/lib_arm/board.c

   1/*
   2 * (C) Copyright 2002-2006
   3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 *
   5 * (C) Copyright 2002
   6 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
   7 * Marius Groeger <mgroeger@sysgo.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., 59 Temple Place, Suite 330, Boston,
  25 * MA 02111-1307 USA
  26 */
  27
  28/*
  29 * To match the U-Boot user interface on ARM platforms to the U-Boot
  30 * standard (as on PPC platforms), some messages with debug character
  31 * are removed from the default U-Boot build.
  32 *
  33 * Define DEBUG here if you want additional info as shown below
  34 * printed upon startup:
  35 *
  36 * U-Boot code: 00F00000 -> 00F3C774  BSS: -> 00FC3274
  37 * IRQ Stack: 00ebff7c
  38 * FIQ Stack: 00ebef7c
  39 */
  40
  41#include <common.h>
  42#include <command.h>
  43#include <malloc.h>
  44#include <stdio_dev.h>
  45#include <timestamp.h>
  46#include <version.h>
  47#include <net.h>
  48#include <serial.h>
  49#include <nand.h>
  50#include <onenand_uboot.h>
  51#include <mmc.h>
  52
  53#ifdef CONFIG_DRIVER_SMC91111
  54#include "../drivers/net/smc91111.h"
  55#endif
  56#ifdef CONFIG_DRIVER_LAN91C96
  57#include "../drivers/net/lan91c96.h"
  58#endif
  59
  60DECLARE_GLOBAL_DATA_PTR;
  61
  62ulong monitor_flash_len;
  63
  64#ifdef CONFIG_HAS_DATAFLASH
  65extern int  AT91F_DataflashInit(void);
  66extern void dataflash_print_info(void);
  67#endif
  68
  69#ifndef CONFIG_IDENT_STRING
  70#define CONFIG_IDENT_STRING ""
  71#endif
  72
  73const char version_string[] =
  74        U_BOOT_VERSION" (" U_BOOT_DATE " - " U_BOOT_TIME ")"CONFIG_IDENT_STRING;
  75
  76#ifdef CONFIG_DRIVER_CS8900
  77extern void cs8900_get_enetaddr (void);
  78#endif
  79
  80#ifdef CONFIG_DRIVER_RTL8019
  81extern void rtl8019_get_enetaddr (uchar * addr);
  82#endif
  83
  84#if defined(CONFIG_HARD_I2C) || \
  85    defined(CONFIG_SOFT_I2C)
  86#include <i2c.h>
  87#endif
  88
  89/*
  90 * Begin and End of memory area for malloc(), and current "brk"
  91 */
  92static ulong mem_malloc_start = 0;
  93static ulong mem_malloc_end = 0;
  94static ulong mem_malloc_brk = 0;
  95
  96static
  97void mem_malloc_init (ulong dest_addr)
  98{
  99        mem_malloc_start = dest_addr;
 100        mem_malloc_end = dest_addr + CONFIG_SYS_MALLOC_LEN;
 101        mem_malloc_brk = mem_malloc_start;
 102
 103        memset ((void *) mem_malloc_start, 0,
 104                        mem_malloc_end - mem_malloc_start);
 105}
 106
 107void *sbrk (ptrdiff_t increment)
 108{
 109        ulong old = mem_malloc_brk;
 110        ulong new = old + increment;
 111
 112        if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
 113                return (NULL);
 114        }
 115        mem_malloc_brk = new;
 116
 117        return ((void *) old);
 118}
 119
 120
 121/************************************************************************
 122 * Coloured LED functionality
 123 ************************************************************************
 124 * May be supplied by boards if desired
 125 */
 126void inline __coloured_LED_init (void) {}
 127void inline coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init")));
 128void inline __red_LED_on (void) {}
 129void inline red_LED_on (void) __attribute__((weak, alias("__red_LED_on")));
 130void inline __red_LED_off(void) {}
 131void inline red_LED_off(void)        __attribute__((weak, alias("__red_LED_off")));
 132void inline __green_LED_on(void) {}
 133void inline green_LED_on(void) __attribute__((weak, alias("__green_LED_on")));
 134void inline __green_LED_off(void) {}
 135void inline green_LED_off(void)__attribute__((weak, alias("__green_LED_off")));
 136void inline __yellow_LED_on(void) {}
 137void inline yellow_LED_on(void)__attribute__((weak, alias("__yellow_LED_on")));
 138void inline __yellow_LED_off(void) {}
 139void inline yellow_LED_off(void)__attribute__((weak, alias("__yellow_LED_off")));
 140void inline __blue_LED_on(void) {}
 141void inline blue_LED_on(void)__attribute__((weak, alias("__blue_LED_on")));
 142void inline __blue_LED_off(void) {}
 143void inline blue_LED_off(void)__attribute__((weak, alias("__blue_LED_off")));
 144
 145/************************************************************************
 146 * Init Utilities                                                       *
 147 ************************************************************************
 148 * Some of this code should be moved into the core functions,
 149 * or dropped completely,
 150 * but let's get it working (again) first...
 151 */
 152
 153#if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
 154#define CONFIG_BAUDRATE 115200
 155#endif
 156static int init_baudrate (void)
 157{
 158        char tmp[64];   /* long enough for environment variables */
 159        int i = getenv_r ("baudrate", tmp, sizeof (tmp));
 160        gd->bd->bi_baudrate = gd->baudrate = (i > 0)
 161                        ? (int) simple_strtoul (tmp, NULL, 10)
 162                        : CONFIG_BAUDRATE;
 163
 164        return (0);
 165}
 166
 167static int display_banner (void)
 168{
 169        printf ("\n\n%s\n\n", version_string);
 170        debug ("U-Boot code: %08lX -> %08lX  BSS: -> %08lX\n",
 171               _armboot_start, _bss_start, _bss_end);
 172#ifdef CONFIG_MODEM_SUPPORT
 173        debug ("Modem Support enabled\n");
 174#endif
 175#ifdef CONFIG_USE_IRQ
 176        debug ("IRQ Stack: %08lx\n", IRQ_STACK_START);
 177        debug ("FIQ Stack: %08lx\n", FIQ_STACK_START);
 178#endif
 179
 180        return (0);
 181}
 182
 183/*
 184 * WARNING: this code looks "cleaner" than the PowerPC version, but
 185 * has the disadvantage that you either get nothing, or everything.
 186 * On PowerPC, you might see "DRAM: " before the system hangs - which
 187 * gives a simple yet clear indication which part of the
 188 * initialization if failing.
 189 */
 190static int display_dram_config (void)
 191{
 192        int i;
 193
 194#ifdef DEBUG
 195        puts ("RAM Configuration:\n");
 196
 197        for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
 198                printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
 199                print_size (gd->bd->bi_dram[i].size, "\n");
 200        }
 201#else
 202        ulong size = 0;
 203
 204        for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
 205                size += gd->bd->bi_dram[i].size;
 206        }
 207        puts("DRAM:  ");
 208        print_size(size, "\n");
 209#endif
 210
 211        return (0);
 212}
 213
 214#ifndef CONFIG_SYS_NO_FLASH
 215static void display_flash_config (ulong size)
 216{
 217        puts ("Flash: ");
 218        print_size (size, "\n");
 219}
 220#endif /* CONFIG_SYS_NO_FLASH */
 221
 222#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 223static int init_func_i2c (void)
 224{
 225        puts ("I2C:   ");
 226        i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
 227        puts ("ready\n");
 228        return (0);
 229}
 230#endif
 231
 232#if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
 233#include <pci.h>
 234static int arm_pci_init(void)
 235{
 236        pci_init();
 237        return 0;
 238}
 239#endif /* CONFIG_CMD_PCI || CONFIG_PCI */
 240
 241/*
 242 * Breathe some life into the board...
 243 *
 244 * Initialize a serial port as console, and carry out some hardware
 245 * tests.
 246 *
 247 * The first part of initialization is running from Flash memory;
 248 * its main purpose is to initialize the RAM so that we
 249 * can relocate the monitor code to RAM.
 250 */
 251
 252/*
 253 * All attempts to come up with a "common" initialization sequence
 254 * that works for all boards and architectures failed: some of the
 255 * requirements are just _too_ different. To get rid of the resulting
 256 * mess of board dependent #ifdef'ed code we now make the whole
 257 * initialization sequence configurable to the user.
 258 *
 259 * The requirements for any new initalization function is simple: it
 260 * receives a pointer to the "global data" structure as it's only
 261 * argument, and returns an integer return code, where 0 means
 262 * "continue" and != 0 means "fatal error, hang the system".
 263 */
 264typedef int (init_fnc_t) (void);
 265
 266int print_cpuinfo (void);
 267
 268init_fnc_t *init_sequence[] = {
 269#if defined(CONFIG_ARCH_CPU_INIT)
 270        arch_cpu_init,          /* basic arch cpu dependent setup */
 271#endif
 272        board_init,             /* basic board dependent setup */
 273#if defined(CONFIG_USE_IRQ)
 274        interrupt_init,         /* set up exceptions */
 275#endif
 276        timer_init,             /* initialize timer */
 277        env_init,               /* initialize environment */
 278        init_baudrate,          /* initialze baudrate settings */
 279        serial_init,            /* serial communications setup */
 280        console_init_f,         /* stage 1 init of console */
 281        display_banner,         /* say that we are here */
 282#if defined(CONFIG_DISPLAY_CPUINFO)
 283        print_cpuinfo,          /* display cpu info (and speed) */
 284#endif
 285#if defined(CONFIG_DISPLAY_BOARDINFO)
 286        checkboard,             /* display board info */
 287#endif
 288#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 289        init_func_i2c,
 290#endif
 291        dram_init,              /* configure available RAM banks */
 292#if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
 293        arm_pci_init,
 294#endif
 295        display_dram_config,
 296        NULL,
 297};
 298
 299void start_armboot (void)
 300{
 301        init_fnc_t **init_fnc_ptr;
 302        char *s;
 303#if defined(CONFIG_VFD) || defined(CONFIG_LCD)
 304        unsigned long addr;
 305#endif
 306
 307        /* Pointer is writable since we allocated a register for it */
 308        gd = (gd_t*)(_armboot_start - CONFIG_SYS_MALLOC_LEN - sizeof(gd_t));
 309        /* compiler optimization barrier needed for GCC >= 3.4 */
 310        __asm__ __volatile__("": : :"memory");
 311
 312        memset ((void*)gd, 0, sizeof (gd_t));
 313        gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
 314        memset (gd->bd, 0, sizeof (bd_t));
 315
 316        gd->flags |= GD_FLG_RELOC;
 317
 318        monitor_flash_len = _bss_start - _armboot_start;
 319
 320        for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
 321                if ((*init_fnc_ptr)() != 0) {
 322                        hang ();
 323                }
 324        }
 325
 326        /* armboot_start is defined in the board-specific linker script */
 327        mem_malloc_init (_armboot_start - CONFIG_SYS_MALLOC_LEN);
 328
 329#ifndef CONFIG_SYS_NO_FLASH
 330        /* configure available FLASH banks */
 331        display_flash_config (flash_init ());
 332#endif /* CONFIG_SYS_NO_FLASH */
 333
 334#ifdef CONFIG_VFD
 335#       ifndef PAGE_SIZE
 336#         define PAGE_SIZE 4096
 337#       endif
 338        /*
 339         * reserve memory for VFD display (always full pages)
 340         */
 341        /* bss_end is defined in the board-specific linker script */
 342        addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
 343        vfd_setmem (addr);
 344        gd->fb_base = addr;
 345#endif /* CONFIG_VFD */
 346
 347#ifdef CONFIG_LCD
 348        /* board init may have inited fb_base */
 349        if (!gd->fb_base) {
 350#               ifndef PAGE_SIZE
 351#                 define PAGE_SIZE 4096
 352#               endif
 353                /*
 354                 * reserve memory for LCD display (always full pages)
 355                 */
 356                /* bss_end is defined in the board-specific linker script */
 357                addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
 358                lcd_setmem (addr);
 359                gd->fb_base = addr;
 360        }
 361#endif /* CONFIG_LCD */
 362
 363#if defined(CONFIG_CMD_NAND)
 364        puts ("NAND:  ");
 365        nand_init();            /* go init the NAND */
 366#endif
 367
 368#if defined(CONFIG_CMD_ONENAND)
 369        onenand_init();
 370#endif
 371
 372#ifdef CONFIG_HAS_DATAFLASH
 373        AT91F_DataflashInit();
 374        dataflash_print_info();
 375#endif
 376
 377        /* initialize environment */
 378        env_relocate ();
 379
 380#ifdef CONFIG_VFD
 381        /* must do this after the framebuffer is allocated */
 382        drv_vfd_init();
 383#endif /* CONFIG_VFD */
 384
 385#ifdef CONFIG_SERIAL_MULTI
 386        serial_initialize();
 387#endif
 388
 389        /* IP Address */
 390        gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
 391
 392        stdio_init ();  /* get the devices list going. */
 393
 394        jumptable_init ();
 395
 396#if defined(CONFIG_API)
 397        /* Initialize API */
 398        api_init ();
 399#endif
 400
 401        console_init_r ();      /* fully init console as a device */
 402
 403#if defined(CONFIG_ARCH_MISC_INIT)
 404        /* miscellaneous arch dependent initialisations */
 405        arch_misc_init ();
 406#endif
 407#if defined(CONFIG_MISC_INIT_R)
 408        /* miscellaneous platform dependent initialisations */
 409        misc_init_r ();
 410#endif
 411
 412        /* enable exceptions */
 413        enable_interrupts ();
 414
 415        /* Perform network card initialisation if necessary */
 416#ifdef CONFIG_DRIVER_TI_EMAC
 417        /* XXX: this needs to be moved to board init */
 418extern void davinci_eth_set_mac_addr (const u_int8_t *addr);
 419        if (getenv ("ethaddr")) {
 420                uchar enetaddr[6];
 421                eth_getenv_enetaddr("ethaddr", enetaddr);
 422                davinci_eth_set_mac_addr(enetaddr);
 423        }
 424#endif
 425
 426#ifdef CONFIG_DRIVER_CS8900
 427        /* XXX: this needs to be moved to board init */
 428        cs8900_get_enetaddr ();
 429#endif
 430
 431#if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
 432        /* XXX: this needs to be moved to board init */
 433        if (getenv ("ethaddr")) {
 434                uchar enetaddr[6];
 435                eth_getenv_enetaddr("ethaddr", enetaddr);
 436                smc_set_mac_addr(enetaddr);
 437        }
 438#endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
 439
 440        /* Initialize from environment */
 441        if ((s = getenv ("loadaddr")) != NULL) {
 442                load_addr = simple_strtoul (s, NULL, 16);
 443        }
 444#if defined(CONFIG_CMD_NET)
 445        if ((s = getenv ("bootfile")) != NULL) {
 446                copy_filename (BootFile, s, sizeof (BootFile));
 447        }
 448#endif
 449
 450#ifdef BOARD_LATE_INIT
 451        board_late_init ();
 452#endif
 453
 454#ifdef CONFIG_GENERIC_MMC
 455        puts ("MMC:   ");
 456        mmc_initialize (gd->bd);
 457#endif
 458
 459#if defined(CONFIG_CMD_NET)
 460#if defined(CONFIG_NET_MULTI)
 461        puts ("Net:   ");
 462#endif
 463        eth_initialize(gd->bd);
 464#if defined(CONFIG_RESET_PHY_R)
 465        debug ("Reset Ethernet PHY\n");
 466        reset_phy();
 467#endif
 468#endif
 469        /* main_loop() can return to retry autoboot, if so just run it again. */
 470        for (;;) {
 471                main_loop ();
 472        }
 473
 474        /* NOTREACHED - no way out of command loop except booting */
 475}
 476
 477void hang (void)
 478{
 479        puts ("### ERROR ### Please RESET the board ###\n");
 480        for (;;);
 481}
 482