lib_sh/board.c

   1 /*
   2  * Copyright (C) 2007,2008
   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 <watchdog.h>
  27 #include <net.h>
  28 #include <environment.h>
  29
  30 extern void malloc_bin_reloc (void);
  31 extern int cpu_init(void);
  32 extern int board_init(void);
  33 extern int dram_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 = CONFIG_SYS_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 - CONFIG_SYS_GBL_DATA_SIZE - CONFIG_SYS_MALLOC_LEN);
  48         mem_malloc_end = (mem_malloc_start + CONFIG_SYS_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: %ldMB\n", gd->bd->bi_flashsize / (1024*1024));
  74
  75         return 0;
  76 }
  77
  78 #if defined(CONFIG_CMD_NAND)
  79 # include <nand.h>
  80 # define INIT_FUNC_NAND_INIT nand_init,
  81 #else
  82 # define INIT_FUNC_NAND_INIT
  83 #endif /* CONFIG_CMD_NAND */
  84
  85 #if defined(CONFIG_WATCHDOG)
  86 extern int watchdog_init(void);
  87 extern int watchdog_disable(void);
  88 # define INIT_FUNC_WATCHDOG_INIT        watchdog_init,
  89 # define WATCHDOG_DISABLE               watchdog_disable
  90 #else
  91 # define INIT_FUNC_WATCHDOG_INIT
  92 # define WATCHDOG_DISABLE
  93 #endif /* CONFIG_WATCHDOG */
  94
  95 #if defined(CONFIG_CMD_IDE)
  96 # include <ide.h>
  97 # define INIT_FUNC_IDE_INIT     ide_init,
  98 #else
  99 # define INIT_FUNC_IDE_INIT
 100 #endif /* CONFIG_CMD_IDE */
 101
 102 #if defined(CONFIG_PCI)
 103 #include <pci.h>
 104 static int sh_pci_init(void)
 105 {
 106         pci_init();
 107         return 0;
 108 }
 109 # define INIT_FUNC_PCI_INIT sh_pci_init,
 110 #else
 111 # define INIT_FUNC_PCI_INIT
 112 #endif /* CONFIG_PCI */
 113
 114 static int sh_mem_env_init(void)
 115 {
 116         mem_malloc_init();
 117         malloc_bin_reloc();
 118         env_relocate();
 119         jumptable_init();
 120         return 0;
 121 }
 122
 123 #if defined(CONFIG_CMD_NET)
 124 static int sh_net_init(void)
 125 {
 126         DECLARE_GLOBAL_DATA_PTR;
 127         char *s, *e;
 128         int i;
 129
 130         gd->bd->bi_ip_addr = getenv_IPaddr("ipaddr");
 131         s = getenv("ethaddr");
 132         for (i = 0; i < 6; ++i) {
 133                 gd->bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0;
 134                 if (s)
 135                         s = (*e) ? e + 1 : e;
 136         }
 137
 138         return 0;
 139 }
 140 #endif
 141
 142 typedef int (init_fnc_t) (void);
 143
 144 init_fnc_t *init_sequence[] =
 145 {
 146         cpu_init,               /* basic cpu dependent setup */
 147         board_init,             /* basic board dependent setup */
 148         interrupt_init, /* set up exceptions */
 149         env_init,               /* event init */
 150         serial_init,    /* SCIF init */
 151         INIT_FUNC_WATCHDOG_INIT /* watchdog init */
 152         console_init_f,
 153         display_options,
 154         checkcpu,
 155         checkboard,             /* Check support board */
 156         dram_init,              /* SDRAM init */
 157         timer_init,             /* SuperH Timer (TCNT0 only) init */
 158         sh_flash_init,  /* Flash memory(NOR) init*/
 159         sh_mem_env_init,
 160         INIT_FUNC_NAND_INIT/* Flash memory (NAND) init */
 161         INIT_FUNC_PCI_INIT      /* PCI init */
 162         devices_init,
 163         console_init_r,
 164         interrupt_init,
 165 #ifdef BOARD_LATE_INIT
 166         board_late_init,
 167 #endif
 168 #if defined(CONFIG_CMD_NET)
 169         sh_net_init,            /* SH specific eth init */
 170 #endif
 171         NULL                    /* Terminate this list */
 172 };
 173
 174 void sh_generic_init(void)
 175 {
 176         DECLARE_GLOBAL_DATA_PTR;
 177
 178         bd_t *bd;
 179         init_fnc_t **init_fnc_ptr;
 180
 181         memset(gd, 0, CONFIG_SYS_GBL_DATA_SIZE);
 182
 183         gd->flags |= GD_FLG_RELOC;      /* tell others: relocation done */
 184
 185         gd->bd = (bd_t *)(gd + 1);      /* At end of global data */
 186         gd->baudrate = CONFIG_BAUDRATE;
 187
 188         gd->cpu_clk = CONFIG_SYS_CLK_FREQ;
 189
 190         bd = gd->bd;
 191         bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
 192         bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
 193         bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
 194 #if defined(CONFIG_SYS_SRAM_BASE) && defined(CONFIG_SYS_SRAM_SIZE)
 195         bd->bi_sramstart = CONFIG_SYS_SRAM_BASE;
 196         bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE;
 197 #endif
 198         bd->bi_baudrate = CONFIG_BAUDRATE;
 199
 200         for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
 201                 WATCHDOG_RESET();
 202                 if ((*init_fnc_ptr) () != 0)
 203                         hang();
 204         }
 205
 206 #ifdef CONFIG_WATCHDOG
 207         /* disable watchdog if environment is set */
 208         {
 209                 char *s = getenv("watchdog");
 210                 if (s != NULL)
 211                         if (strncmp(s, "off", 3) == 0)
 212                                 WATCHDOG_DISABLE();
 213         }
 214 #endif /* CONFIG_WATCHDOG*/
 215
 216
 217 #if defined(CONFIG_CMD_NET)
 218         {
 219                 char *s;
 220                 puts("Net:   ");
 221                 eth_initialize(gd->bd);
 222
 223                 s = getenv("bootfile");
 224                 if (s != NULL)
 225                         copy_filename(BootFile, s, sizeof(BootFile));
 226         }
 227 #endif /* CONFIG_CMD_NET */
 228
 229         while (1) {
 230                 WATCHDOG_RESET();
 231                 main_loop();
 232         }
 233 }
 234
 235 /***********************************************************************/
 236
 237 void hang(void)
 238 {
 239         puts("Board ERROR\n");
 240         for (;;)
 241                 ;
 242 }