arch/microblaze/lib/board.c

   1 /*
   2  * (C) Copyright 2007 Michal Simek
   3  * (C) Copyright 2004 Atmark Techno, Inc.
   4  *
   5  * Michal  SIMEK <monstr@monstr.eu>
   6  * Yasushi SHOJI <yashi@atmark-techno.com>
   7  *
   8  * See file CREDITS for list of people who contributed to this
   9  * project.
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License as
  13  * published by the Free Software Foundation; either version 2 of
  14  * the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  24  * MA 02111-1307 USA
  25  */
  26
  27 #include <common.h>
  28 #include <command.h>
  29 #include <malloc.h>
  30 #include <timestamp.h>
  31 #include <version.h>
  32 #include <watchdog.h>
  33
  34 DECLARE_GLOBAL_DATA_PTR;
  35
  36 const char version_string[] = U_BOOT_VERSION " ("U_BOOT_DATE" - "U_BOOT_TIME")";
  37
  38 #ifdef CONFIG_SYS_GPIO_0
  39 extern int gpio_init (void);
  40 #endif
  41 #ifdef CONFIG_SYS_INTC_0
  42 extern int interrupts_init (void);
  43 #endif
  44 #if defined(CONFIG_CMD_NET)
  45 extern int eth_init (bd_t * bis);
  46 #endif
  47 #ifdef CONFIG_SYS_TIMER_0
  48 extern int timer_init (void);
  49 #endif
  50 #ifdef CONFIG_SYS_FSL_2
  51 extern void fsl_init2 (void);
  52 #endif
  53
  54 /*
  55  * All attempts to come up with a "common" initialization sequence
  56  * that works for all boards and architectures failed: some of the
  57  * requirements are just _too_ different. To get rid of the resulting
  58  * mess of board dependend #ifdef'ed code we now make the whole
  59  * initialization sequence configurable to the user.
  60  *
  61  * The requirements for any new initalization function is simple: it
  62  * receives a pointer to the "global data" structure as it's only
  63  * argument, and returns an integer return code, where 0 means
  64  * "continue" and != 0 means "fatal error, hang the system".
  65  */
  66 typedef int (init_fnc_t) (void);
  67
  68 init_fnc_t *init_sequence[] = {
  69         env_init,
  70         serial_init,
  71 #ifdef CONFIG_SYS_GPIO_0
  72         gpio_init,
  73 #endif
  74 #ifdef CONFIG_SYS_INTC_0
  75         interrupts_init,
  76 #endif
  77 #ifdef CONFIG_SYS_TIMER_0
  78         timer_init,
  79 #endif
  80 #ifdef CONFIG_SYS_FSL_2
  81         fsl_init2,
  82 #endif
  83         NULL,
  84 };
  85
  86 void board_init (void)
  87 {
  88         bd_t *bd;
  89         init_fnc_t **init_fnc_ptr;
  90         gd = (gd_t *) CONFIG_SYS_GBL_DATA_OFFSET;
  91 #if defined(CONFIG_CMD_FLASH)
  92         ulong flash_size = 0;
  93 #endif
  94         asm ("nop");    /* FIXME gd is not initialize - wait */
  95         memset ((void *)gd, 0, CONFIG_SYS_GBL_DATA_SIZE);
  96         gd->bd = (bd_t *) (gd + 1);     /* At end of global data */
  97         gd->baudrate = CONFIG_BAUDRATE;
  98         bd = gd->bd;
  99         bd->bi_baudrate = CONFIG_BAUDRATE;
 100         bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
 101         bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
 102         gd->flags |= GD_FLG_RELOC;      /* tell others: relocation done */
 103
 104         /*
 105          * The Malloc area is immediately below the monitor copy in DRAM
 106          * aka CONFIG_SYS_MONITOR_BASE - Note there is no need for reloc_off
 107          * as our monitory code is run from SDRAM
 108          */
 109         mem_malloc_init (CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN);
 110
 111         for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
 112                 WATCHDOG_RESET ();
 113                 if ((*init_fnc_ptr) () != 0) {
 114                         hang ();
 115                 }
 116         }
 117
 118         puts ("SDRAM :\n");
 119         printf ("\t\tIcache:%s\n", icache_status() ? "ON" : "OFF");
 120         printf ("\t\tDcache:%s\n", dcache_status() ? "ON" : "OFF");
 121         printf ("\tU-Boot Start:0x%08x\n", TEXT_BASE);
 122
 123 #if defined(CONFIG_CMD_FLASH)
 124         puts ("FLASH: ");
 125         bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
 126         if (0 < (flash_size = flash_init ())) {
 127                 bd->bi_flashsize = flash_size;
 128                 bd->bi_flashoffset = CONFIG_SYS_FLASH_BASE + flash_size;
 129 # ifdef CONFIG_SYS_FLASH_CHECKSUM
 130                 print_size (flash_size, "");
 131                 /*
 132                  * Compute and print flash CRC if flashchecksum is set to 'y'
 133                  *
 134                  * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
 135                  */
 136                 s = getenv ("flashchecksum");
 137                 if (s && (*s == 'y')) {
 138                         printf ("  CRC: %08X",
 139                                 crc32 (0, (const unsigned char *) CONFIG_SYS_FLASH_BASE, flash_size)
 140                         );
 141                 }
 142                 putc ('\n');
 143 # else  /* !CONFIG_SYS_FLASH_CHECKSUM */
 144                 print_size (flash_size, "\n");
 145 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
 146         } else {
 147                 puts ("Flash init FAILED");
 148                 bd->bi_flashstart = 0;
 149                 bd->bi_flashsize = 0;
 150                 bd->bi_flashoffset = 0;
 151         }
 152 #endif
 153
 154 #if defined(CONFIG_CMD_NET)
 155         /* IP Address */
 156         bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
 157         eth_init (bd);
 158 #endif
 159
 160         /* relocate environment function pointers etc. */
 161         env_relocate ();
 162
 163         /* main_loop */
 164         for (;;) {
 165                 WATCHDOG_RESET ();
 166                 main_loop ();
 167         }
 168 }
 169
 170 void hang (void)
 171 {
 172         puts ("### ERROR ### Please RESET the board ###\n");
 173         for (;;) ;
 174 }