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 <version.h>
  31 #include <watchdog.h>
  32 #include <stdio_dev.h>
  33 #include <net.h>
  34 #include <asm/processor.h>
  35
  36 DECLARE_GLOBAL_DATA_PTR;
  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
  45 #if defined(CONFIG_CMD_NET)
  46 extern int eth_init (bd_t * bis);
  47 #endif
  48 #ifdef CONFIG_SYS_TIMER_0
  49 extern int timer_init (void);
  50 #endif
  51 #ifdef CONFIG_SYS_FSL_2
  52 extern void fsl_init2 (void);
  53 #endif
  54
  55 /*
  56  * All attempts to come up with a "common" initialization sequence
  57  * that works for all boards and architectures failed: some of the
  58  * requirements are just _too_ different. To get rid of the resulting
  59  * mess of board dependend #ifdef'ed code we now make the whole
  60  * initialization sequence configurable to the user.
  61  *
  62  * The requirements for any new initalization function is simple: it
  63  * receives a pointer to the "global data" structure as it's only
  64  * argument, and returns an integer return code, where 0 means
  65  * "continue" and != 0 means "fatal error, hang the system".
  66  */
  67 typedef int (init_fnc_t) (void);
  68
  69 init_fnc_t *init_sequence[] = {
  70         env_init,
  71         serial_init,
  72         console_init_f,
  73 #ifdef CONFIG_SYS_GPIO_0
  74         gpio_init,
  75 #endif
  76 #ifdef CONFIG_SYS_INTC_0
  77         interrupts_init,
  78 #endif
  79 #ifdef CONFIG_SYS_TIMER_0
  80         timer_init,
  81 #endif
  82 #ifdef CONFIG_SYS_FSL_2
  83         fsl_init2,
  84 #endif
  85         NULL,
  86 };
  87
  88 unsigned long monitor_flash_len;
  89
  90 void board_init (void)
  91 {
  92         bd_t *bd;
  93         init_fnc_t **init_fnc_ptr;
  94         gd = (gd_t *) (CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_GBL_DATA_OFFSET);
  95         bd = (bd_t *) (CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_GBL_DATA_OFFSET \
  96                                                 - GENERATED_BD_INFO_SIZE);
  97         char *s;
  98 #if defined(CONFIG_CMD_FLASH)
  99         ulong flash_size = 0;
 100 #endif
 101         asm ("nop");    /* FIXME gd is not initialize - wait */
 102         memset ((void *)gd, 0, GENERATED_GBL_DATA_SIZE);
 103         memset ((void *)bd, 0, GENERATED_BD_INFO_SIZE);
 104         gd->bd = bd;
 105         gd->baudrate = CONFIG_BAUDRATE;
 106         bd->bi_baudrate = CONFIG_BAUDRATE;
 107         bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
 108         bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
 109         gd->flags |= GD_FLG_RELOC;      /* tell others: relocation done */
 110
 111         monitor_flash_len = __end - __text_start;
 112
 113         /*
 114          * The Malloc area is immediately below the monitor copy in DRAM
 115          * aka CONFIG_SYS_MONITOR_BASE - Note there is no need for reloc_off
 116          * as our monitory code is run from SDRAM
 117          */
 118         mem_malloc_init (CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN);
 119
 120         for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
 121                 WATCHDOG_RESET ();
 122                 if ((*init_fnc_ptr) () != 0) {
 123                         hang ();
 124                 }
 125         }
 126
 127         puts ("SDRAM :\n");
 128         printf ("\t\tIcache:%s\n", icache_status() ? "ON" : "OFF");
 129         printf ("\t\tDcache:%s\n", dcache_status() ? "ON" : "OFF");
 130         printf ("\tU-Boot Start:0x%08x\n", CONFIG_SYS_TEXT_BASE);
 131
 132 #if defined(CONFIG_CMD_FLASH)
 133         puts ("Flash: ");
 134         bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
 135         if (0 < (flash_size = flash_init ())) {
 136                 bd->bi_flashsize = flash_size;
 137                 bd->bi_flashoffset = CONFIG_SYS_FLASH_BASE + flash_size;
 138 # ifdef CONFIG_SYS_FLASH_CHECKSUM
 139                 print_size (flash_size, "");
 140                 /*
 141                  * Compute and print flash CRC if flashchecksum is set to 'y'
 142                  *
 143                  * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
 144                  */
 145                 s = getenv ("flashchecksum");
 146                 if (s && (*s == 'y')) {
 147                         printf ("  CRC: %08X",
 148                                 crc32 (0, (const unsigned char *) CONFIG_SYS_FLASH_BASE, flash_size)
 149                         );
 150                 }
 151                 putc ('\n');
 152 # else  /* !CONFIG_SYS_FLASH_CHECKSUM */
 153                 print_size (flash_size, "\n");
 154 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
 155         } else {
 156                 puts ("Flash init FAILED");
 157                 bd->bi_flashstart = 0;
 158                 bd->bi_flashsize = 0;
 159                 bd->bi_flashoffset = 0;
 160         }
 161 #endif
 162
 163         /* relocate environment function pointers etc. */
 164         env_relocate ();
 165
 166         /* Initialize stdio devices */
 167         stdio_init ();
 168
 169         if ((s = getenv ("loadaddr")) != NULL) {
 170                 load_addr = simple_strtoul (s, NULL, 16);
 171         }
 172
 173 #if defined(CONFIG_CMD_NET)
 174         /* IP Address */
 175         bd->bi_ip_addr = getenv_IPaddr("ipaddr");
 176
 177         printf("Net:   ");
 178         eth_initialize(gd->bd);
 179
 180         uchar enetaddr[6];
 181         eth_getenv_enetaddr("ethaddr", enetaddr);
 182         printf("MAC:   %pM\n", enetaddr);
 183 #endif
 184
 185         /* main_loop */
 186         for (;;) {
 187                 WATCHDOG_RESET ();
 188                 main_loop ();
 189         }
 190 }
 191
 192 void hang (void)
 193 {
 194         puts ("### ERROR ### Please RESET the board ###\n");
 195         for (;;) ;
 196 }