lib_sh/board.c

   1 /*
   2  * Copyright (C) 2007
   3  * Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation; either version 2 of
   8  * the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  18  * MA 02111-1307 USA
  19  */
  20
  21 #include <common.h>
  22 #include <command.h>
  23 #include <malloc.h>
  24 #include <devices.h>
  25 #include <version.h>
  26 #include <net.h>
  27 #include <environment.h>
  28
  29 extern void malloc_bin_reloc (void);
  30 extern int cpu_init(void);
  31 extern int board_init(void);
  32 extern int dram_init(void);
  33 extern int watchdog_init(void);
  34 extern int timer_init(void);
  35
  36 const char version_string[] = U_BOOT_VERSION" (" __DATE__ " - " __TIME__ ")";
  37
  38 unsigned long monitor_flash_len = CFG_MONITOR_LEN;
  39
  40 static unsigned long mem_malloc_start;
  41 static unsigned long mem_malloc_end;
  42 static unsigned long mem_malloc_brk;
  43
  44 static void mem_malloc_init (void)
  45 {
  46
  47         mem_malloc_start = (TEXT_BASE - CFG_GBL_DATA_SIZE - CFG_MALLOC_LEN);
  48         mem_malloc_end = (mem_malloc_start + CFG_MALLOC_LEN - 16);
  49         mem_malloc_brk = mem_malloc_start;
  50         memset ((void *) mem_malloc_start, 0,
  51                 (mem_malloc_end - mem_malloc_start));
  52 }
  53
  54 void *sbrk (ptrdiff_t increment)
  55 {
  56         unsigned long old = mem_malloc_brk;
  57         unsigned long new = old + increment;
  58
  59         if ((new < mem_malloc_start) ||
  60             (new > mem_malloc_end)) {
  61                 return NULL;
  62         }
  63
  64         mem_malloc_brk = new;
  65         return (void *) old;
  66 }
  67
  68 static int sh_flash_init(void)
  69 {
  70         DECLARE_GLOBAL_DATA_PTR;
  71
  72         gd->bd->bi_flashsize = flash_init();
  73         printf("FLASH: %dMB\n", gd->bd->bi_flashsize / (1024*1024));
  74
  75         return 0;
  76 }
  77
  78 #if defined(CONFIG_CMD_NAND)
  79 void nand_init (void);
  80 static int sh_nand_init(void)
  81 {
  82         printf("NAND: ");
  83         nand_init();    /* go init the NAND */
  84         return 0;
  85 }
  86 #endif /* CONFIG_CMD_NAND */
  87
  88 #if defined(CONFIG_CMD_IDE)
  89 #include <ide.h>
  90 static int sh_marubun_init(void)
  91 {
  92         puts ("IDE:   ");
  93         ide_init();
  94         return 0;
  95 }
  96 #endif /* (CONFIG_CMD_IDE) */
  97
  98 static int sh_mem_env_init(void)
  99 {
 100         mem_malloc_init();
 101         malloc_bin_reloc();
 102         env_relocate();
 103         jumptable_init();
 104         return 0;
 105 }
 106
 107 static int sh_net_init(void)
 108 {
 109         DECLARE_GLOBAL_DATA_PTR;
 110         char *s, *e;
 111         int i;
 112
 113         gd->bd->bi_ip_addr = getenv_IPaddr("ipaddr");
 114         s = getenv("ethaddr");
 115         for (i = 0; i < 6; ++i) {
 116                 gd->bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0;
 117                 if (s) s = (*e) ? e + 1 : e;
 118         }
 119
 120         return 0;
 121 }
 122
 123 typedef int (init_fnc_t) (void);
 124
 125 init_fnc_t *init_sequence[] =
 126 {
 127         cpu_init,               /* basic cpu dependent setup */
 128         board_init,             /* basic board dependent setup */
 129         interrupt_init,         /* set up exceptions */
 130         env_init,               /* event init */
 131         serial_init,            /* SCIF init */
 132         watchdog_init,          /* watchdog init */
 133         console_init_f,
 134         display_options,
 135         checkcpu,
 136         checkboard,             /* Check support board */
 137         dram_init,              /* SDRAM init */
 138         timer_init,             /* SuperH Timer (TCNT0 only) init */
 139         sh_flash_init,          /* Flash memory(NOR) init*/
 140         sh_mem_env_init,
 141 #if defined(CONFIG_CMD_NAND)
 142         sh_nand_init,           /* Flash memory (NAND) init */
 143 #endif
 144         devices_init,
 145         console_init_r,
 146         interrupt_init,
 147 #ifdef BOARD_LATE_INIT
 148         board_late_init,
 149 #endif
 150 #if defined(CONFIG_CMD_NET)
 151         sh_net_init,            /* SH specific eth init */
 152 #endif
 153         NULL                    /* Terminate this list */
 154 };
 155
 156 void sh_generic_init (void)
 157 {
 158         DECLARE_GLOBAL_DATA_PTR;
 159
 160         bd_t *bd;
 161         init_fnc_t **init_fnc_ptr;
 162         char *s;
 163         int i;
 164
 165         memset (gd, 0, CFG_GBL_DATA_SIZE);
 166
 167         gd->flags |= GD_FLG_RELOC;      /* tell others: relocation done */
 168
 169         gd->bd = (bd_t *) (gd + 1);     /* At end of global data */
 170         gd->baudrate = CONFIG_BAUDRATE;
 171
 172         gd->cpu_clk = CONFIG_SYS_CLK_FREQ;
 173
 174         bd = gd->bd;
 175         bd->bi_memstart = CFG_SDRAM_BASE;
 176         bd->bi_memsize = CFG_SDRAM_SIZE;
 177         bd->bi_flashstart = CFG_FLASH_BASE;
 178 #if defined(CFG_SRAM_BASE) && defined(CFG_SRAM_SIZE)
 179         bd->bi_sramstart= CFG_SRAM_BASE;
 180         bd->bi_sramsize = CFG_SRAM_SIZE;
 181 #endif
 182         bd->bi_baudrate = CONFIG_BAUDRATE;
 183
 184         for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr , i++) {
 185                 if ((*init_fnc_ptr) () != 0) {
 186                         hang();
 187                 }
 188         }
 189
 190 #if defined(CONFIG_CMD_NET)
 191         puts ("Net:   ");
 192         eth_initialize(gd->bd);
 193
 194         if ((s = getenv ("bootfile")) != NULL) {
 195                 copy_filename (BootFile, s, sizeof (BootFile));
 196         }
 197 #endif /* CONFIG_CMD_NET */
 198
 199         while (1) {
 200                 main_loop();
 201         }
 202 }
 203
 204 /***********************************************************************/
 205
 206 void hang (void)
 207 {
 208         puts ("Board ERROR\n");
 209         for (;;);
 210 }