| /* |
| * (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); |
| extern int getenv_IPaddr (char *); |
| #endif |
| |
| /* |
| * Begin and End of memory area for malloc(), and current "brk" |
| */ |
| static ulong mem_malloc_start; |
| static ulong mem_malloc_end; |
| static ulong mem_malloc_brk; |
| |
| /* |
| * 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 |
| */ |
| static void mem_malloc_init (void) |
| { |
| mem_malloc_end = (CONFIG_SYS_MALLOC_BASE + CONFIG_SYS_MALLOC_LEN); |
| mem_malloc_start = CONFIG_SYS_MALLOC_BASE; |
| mem_malloc_brk = mem_malloc_start; |
| memset ((void *)mem_malloc_start, 0, mem_malloc_end - mem_malloc_start); |
| } |
| |
| void *sbrk (ptrdiff_t increment) |
| { |
| ulong old = mem_malloc_brk; |
| ulong new = old + increment; |
| |
| if ((new < mem_malloc_start) || (new > mem_malloc_end)) { |
| return (NULL); |
| } |
| mem_malloc_brk = new; |
| return ((void *)old); |
| } |
| |
| /* |
| * 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 |
| #if defined(CONFIG_CMD_NET) |
| char *s, *e; |
| int i; |
| #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 */ |
| |
| /* Initialise malloc() area */ |
| mem_malloc_init (); |
| |
| for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) { |
| WATCHDOG_RESET (); |
| if ((*init_fnc_ptr) () != 0) { |
| hang (); |
| } |
| } |
| |
| puts ("SDRAM :\n"); |
| #if defined(CONFIG_CMD_CACHE) |
| puts ("\tEnabling caches :\n"); |
| printf ("\t\tIcache:%s\n", icache_status() ? "OK" : "FAIL"); |
| printf ("\t\tDcache:%s\n", dcache_status() ? "OK" : "FAIL"); |
| #endif |
| 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) |
| /* board MAC address */ |
| s = getenv ("ethaddr"); |
| printf ("MAC:%s\n",s); |
| for (i = 0; i < 6; ++i) { |
| bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0; |
| if (s) |
| s = (*e) ? e + 1 : e; |
| } |
| /* 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 (;;) ; |
| } |