diff options
Diffstat (limited to 'lib_sh/board.c')
| -rw-r--r-- | lib_sh/board.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/lib_sh/board.c b/lib_sh/board.c new file mode 100644 index 0000000..c3f8462 --- /dev/null +++ b/lib_sh/board.c @@ -0,0 +1,163 @@ +/* + * Copyright (C) 2007 + * Nobuhiro Iwamatsu <iwamatsu@nigauri.org> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <command.h> +#include <malloc.h> +#include <devices.h> +#include <version.h> +#include <net.h> +#include <environment.h> + +extern void malloc_bin_reloc (void); +extern int cpu_init(void); +extern int board_init(void); +extern int dram_init(void); +extern int watchdog_init(void); +extern int timer_init(void); + +const char version_string[] = U_BOOT_VERSION" (" __DATE__ " - " __TIME__ ")"; + +unsigned long monitor_flash_len = CFG_MONITOR_LEN; + +static unsigned long mem_malloc_start; +static unsigned long mem_malloc_end; +static unsigned long mem_malloc_brk; + +static void mem_malloc_init (void) +{ + + mem_malloc_start = (TEXT_BASE - CFG_GBL_DATA_SIZE - CFG_MALLOC_LEN); + mem_malloc_end = (mem_malloc_start + CFG_MALLOC_LEN - 16); + mem_malloc_brk = mem_malloc_start; + memset ((void *) mem_malloc_start, 0, + (mem_malloc_end - mem_malloc_start)); +} + +void *sbrk (ptrdiff_t increment) +{ + unsigned long old = mem_malloc_brk; + unsigned long new = old + increment; + + if ((new < mem_malloc_start) || + (new > mem_malloc_end)) { + return NULL; + } + + mem_malloc_brk = new; + return (void *) old; +} + +typedef int (init_fnc_t) (void); + +init_fnc_t *init_sequence[] = +{ + cpu_init, /* basic cpu dependent setup */ + board_init, /* basic board dependent setup */ + interrupt_init, /* set up exceptions */ + env_init, /* event init */ + serial_init, /* SCIF init */ + watchdog_init, + console_init_f, + display_options, + checkcpu, + checkboard, + dram_init, /* SDRAM init */ + NULL /* Terminate this list */ +}; + +void sh_generic_init (void) +{ + DECLARE_GLOBAL_DATA_PTR; + + bd_t *bd; + init_fnc_t **init_fnc_ptr; + char *s, *e; + int i; + + memset (gd, 0, CFG_GBL_DATA_SIZE); + + gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */ + + gd->bd = (bd_t *) (gd + 1); /* At end of global data */ + gd->baudrate = CONFIG_BAUDRATE; + + gd->cpu_clk = CONFIG_SYS_CLK_FREQ; + + bd = gd->bd; + bd->bi_memstart = CFG_SDRAM_BASE; + bd->bi_memsize = CFG_SDRAM_SIZE; + bd->bi_flashstart = CFG_FLASH_BASE; +#if defined(CFG_SRAM_BASE) && defined(CFG_SRAM_SIZE) + bd->bi_sramstart= CFG_SRAM_BASE; + bd->bi_sramsize = CFG_SRAM_SIZE; +#endif + bd->bi_baudrate = CONFIG_BAUDRATE; + + for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) { + if ((*init_fnc_ptr) () != 0) { + hang(); + } + } + + timer_init(); + + /* flash_init need timer_init().(TMU) */ + bd->bi_flashsize = flash_init(); + printf("FLASH: %dMB\n", bd->bi_flashsize / (1024*1024)); + + mem_malloc_init(); + malloc_bin_reloc(); + env_relocate(); + +#if (CONFIG_COMMANDS & CFG_CMD_NET) + bd->bi_ip_addr = getenv_IPaddr ("ipaddr"); + s = getenv ("ethaddr"); + for (i = 0; i < 6; ++i) { + bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0; + if (s) s = (*e) ? e + 1 : e; + } +#endif + devices_init(); + jumptable_init(); + console_init_r(); + interrupt_init(); +#ifdef BOARD_LATE_INIT + board_late_init (); +#endif +#if (CONFIG_COMMANDS & CFG_CMD_NET) +#if defined(CONFIG_NET_MULTI) + puts ("Net: "); +#endif + eth_initialize(gd->bd); +#endif + while (1) { + main_loop(); + } +} + + +/***********************************************************************/ + +void hang (void) +{ + puts ("Board ERROR \n"); + for (;;); +} |