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Diffstat (limited to 'arch/microblaze/lib/board.c')
| -rw-r--r-- | arch/microblaze/lib/board.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/arch/microblaze/lib/board.c b/arch/microblaze/lib/board.c new file mode 100644 index 0000000..d4baea9 --- /dev/null +++ b/arch/microblaze/lib/board.c @@ -0,0 +1,162 @@ +/* + * (C) Copyright 2007 Michal Simek + * (C) Copyright 2004 Atmark Techno, Inc. + * + * Michal SIMEK <monstr@monstr.eu> + * Yasushi SHOJI <yashi@atmark-techno.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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 <timestamp.h> +#include <version.h> +#include <watchdog.h> + +DECLARE_GLOBAL_DATA_PTR; + +const char version_string[] = U_BOOT_VERSION " ("U_BOOT_DATE" - "U_BOOT_TIME")"; + +#ifdef CONFIG_SYS_GPIO_0 +extern int gpio_init (void); +#endif +#ifdef CONFIG_SYS_INTC_0 +extern int interrupts_init (void); +#endif +#if defined(CONFIG_CMD_NET) +extern int eth_init (bd_t * bis); +#endif + +/* + * All attempts to come up with a "common" initialization sequence + * that works for all boards and architectures failed: some of the + * requirements are just _too_ different. To get rid of the resulting + * mess of board dependend #ifdef'ed code we now make the whole + * initialization sequence configurable to the user. + * + * The requirements for any new initalization function is simple: it + * receives a pointer to the "global data" structure as it's only + * argument, and returns an integer return code, where 0 means + * "continue" and != 0 means "fatal error, hang the system". + */ +typedef int (init_fnc_t) (void); + +init_fnc_t *init_sequence[] = { + env_init, + serial_init, +#ifdef CONFIG_SYS_GPIO_0 + gpio_init, +#endif +#ifdef CONFIG_SYS_INTC_0 + interrupts_init, +#endif + NULL, +}; + +void board_init (void) +{ + bd_t *bd; + init_fnc_t **init_fnc_ptr; + gd = (gd_t *) CONFIG_SYS_GBL_DATA_OFFSET; +#if defined(CONFIG_CMD_FLASH) + ulong flash_size = 0; +#endif + asm ("nop"); /* FIXME gd is not initialize - wait */ + memset ((void *)gd, 0, CONFIG_SYS_GBL_DATA_SIZE); + gd->bd = (bd_t *) (gd + 1); /* At end of global data */ + gd->baudrate = CONFIG_BAUDRATE; + bd = gd->bd; + bd->bi_baudrate = CONFIG_BAUDRATE; + bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; + bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE; + gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */ + + /* + * The Malloc area is immediately below the monitor copy in DRAM + * aka CONFIG_SYS_MONITOR_BASE - Note there is no need for reloc_off + * as our monitory code is run from SDRAM + */ + mem_malloc_init (CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN); + + for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) { + WATCHDOG_RESET (); + if ((*init_fnc_ptr) () != 0) { + hang (); + } + } + + puts ("SDRAM :\n"); + printf ("\t\tIcache:%s\n", icache_status() ? "OK" : "FAIL"); + printf ("\t\tDcache:%s\n", dcache_status() ? "OK" : "FAIL"); + printf ("\tU-Boot Start:0x%08x\n", TEXT_BASE); + +#if defined(CONFIG_CMD_FLASH) + puts ("FLASH: "); + bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; + if (0 < (flash_size = flash_init ())) { + bd->bi_flashsize = flash_size; + bd->bi_flashoffset = CONFIG_SYS_FLASH_BASE + flash_size; +# ifdef CONFIG_SYS_FLASH_CHECKSUM + print_size (flash_size, ""); + /* + * Compute and print flash CRC if flashchecksum is set to 'y' + * + * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX + */ + s = getenv ("flashchecksum"); + if (s && (*s == 'y')) { + printf (" CRC: %08X", + crc32 (0, (const unsigned char *) CONFIG_SYS_FLASH_BASE, flash_size) + ); + } + putc ('\n'); +# else /* !CONFIG_SYS_FLASH_CHECKSUM */ + print_size (flash_size, "\n"); +# endif /* CONFIG_SYS_FLASH_CHECKSUM */ + } else { + puts ("Flash init FAILED"); + bd->bi_flashstart = 0; + bd->bi_flashsize = 0; + bd->bi_flashoffset = 0; + } +#endif + +#if defined(CONFIG_CMD_NET) + /* IP Address */ + bd->bi_ip_addr = getenv_IPaddr ("ipaddr"); + eth_init (bd); +#endif + + /* relocate environment function pointers etc. */ + env_relocate (); + + /* main_loop */ + for (;;) { + WATCHDOG_RESET (); + main_loop (); + } +} + +void hang (void) +{ + puts ("### ERROR ### Please RESET the board ###\n"); + for (;;) ; +} |