2007-07-05 16:01:14 +00:00
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/*
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* (C) Copyright 2002-2006
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Marius Groeger <mgroeger@sysgo.de>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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2007-07-05 16:01:24 +00:00
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#include <init.h>
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2007-07-05 16:01:14 +00:00
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#include <command.h>
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#include <malloc.h>
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2007-07-05 16:02:14 +00:00
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#include <linux/utsrelease.h>
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2007-07-05 16:01:29 +00:00
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#include <mem_malloc.h>
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#include <debug_ll.h>
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2007-07-05 16:01:52 +00:00
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#include <fs.h>
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#include <linux/stat.h>
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2007-09-13 13:22:23 +00:00
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#include <environment.h>
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2007-07-12 07:54:34 +00:00
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#include <reloc.h>
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2007-07-05 16:01:23 +00:00
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2007-07-05 16:01:14 +00:00
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#ifndef CONFIG_IDENT_STRING
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#define CONFIG_IDENT_STRING ""
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#endif
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2007-07-12 09:21:13 +00:00
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extern initcall_t __u_boot_initcalls_start[], __u_boot_early_initcalls_end[], __u_boot_initcalls_end[];
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2007-07-25 10:25:01 +00:00
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const char version_string[] =
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2007-07-16 08:30:40 +00:00
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"U-Boot " UTS_RELEASE " (" __DATE__ " - " __TIME__ ")"CONFIG_IDENT_STRING;
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2007-07-12 09:21:13 +00:00
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static int display_banner (void)
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{
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2007-07-25 10:25:01 +00:00
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printf (RELOC("\n\n%s\n\n"), RELOC_VAR(version_string));
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2007-07-12 10:09:48 +00:00
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debug (RELOC("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n"),
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2007-07-25 10:25:01 +00:00
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RELOC_VAR(_u_boot_start), RELOC_VAR(_bss_start), RELOC_VAR(_bss_end));
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2007-07-12 09:21:13 +00:00
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printf(RELOC("Board: " CONFIG_BOARDINFO "\n"));
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return 0;
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}
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2007-07-12 07:54:34 +00:00
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2007-07-12 09:21:13 +00:00
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#ifdef CONFIG_HAS_EARLY_INIT
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2007-07-12 07:54:34 +00:00
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#define EARLY_INITDATA (CFG_INIT_RAM_ADDR + CFG_INIT_RAM_SIZE \
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- CONFIG_EARLY_INITDATA_SIZE)
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void *init_data_ptr = (void *)EARLY_INITDATA;
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void early_init (void)
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{
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/* copy the early initdata segment to early init RAM */
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memcpy((void *)EARLY_INITDATA, RELOC(&__early_init_data_begin),
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2007-07-25 10:25:01 +00:00
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(ulong)&__early_init_data_end - (ulong)&__early_init_data_begin);
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2007-07-12 07:54:34 +00:00
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early_console_start(RELOC("psc3"), 115200);
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2007-07-05 16:01:14 +00:00
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2007-07-12 09:21:13 +00:00
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display_banner();
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2007-07-05 16:01:14 +00:00
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}
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2007-07-12 09:21:13 +00:00
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#endif /* CONFIG_HAS_EARLY_INIT */
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2007-07-05 16:01:24 +00:00
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2007-09-13 13:22:23 +00:00
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#ifdef CONFIG_DEFAULT_ENVIRONMENT
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#include <uboot_default_env.h>
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static struct device_d default_env_dev = {
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.name = "rom",
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.id = "defaultenv",
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};
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static void register_default_env(void)
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{
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default_env_dev.map_base = (unsigned long)default_environment;
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default_env_dev.size = sizeof(default_environment);
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register_device(&default_env_dev);
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}
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#else
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static void register_default_env(void)
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{
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}
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#endif
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2007-07-05 16:01:29 +00:00
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void start_uboot (void)
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2007-07-05 16:01:14 +00:00
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{
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2007-07-05 16:01:24 +00:00
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initcall_t *initcall;
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int result;
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2007-07-05 16:01:52 +00:00
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struct stat s;
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2007-07-05 16:01:39 +00:00
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2007-07-12 09:21:13 +00:00
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#ifdef CONFIG_HAS_EARLY_INIT
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2007-07-12 07:54:34 +00:00
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/* We are running from RAM now, copy early initdata from
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* early RAM to RAM
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*/
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memcpy(&__early_init_data_begin, init_data_ptr,
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2007-07-25 10:25:01 +00:00
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(ulong)&__early_init_data_end - (ulong)&__early_init_data_begin);
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2007-07-12 07:54:34 +00:00
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init_data_ptr = &__early_init_data_begin;
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2007-07-12 09:21:13 +00:00
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#endif /* CONFIG_HAS_EARLY_INIT */
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2007-07-12 07:54:34 +00:00
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for (initcall = __u_boot_initcalls_start;
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initcall < __u_boot_initcalls_end; initcall++) {
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PUTHEX_LL(*initcall);
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PUTC_LL('\n');
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2007-07-05 16:01:24 +00:00
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result = (*initcall)();
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if (result)
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hang();
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}
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2007-07-12 09:21:13 +00:00
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#ifndef CONFIG_HAS_EARLY_INIT
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display_banner();
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#endif
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2007-07-05 16:01:14 +00:00
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2007-09-13 13:22:23 +00:00
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register_default_env();
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2007-07-05 16:02:14 +00:00
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mount("none", "ramfs", "/");
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mkdir("/dev");
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mkdir("/env");
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mount("none", "devfs", "/dev");
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2007-09-13 13:22:23 +00:00
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if (envfs_load("/dev/env0", "/env")) {
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#ifdef CONFIG_DEFAULT_ENVIRONMENT
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printf("using default environment\n");
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envfs_load("/dev/defaultenv", "/env");
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#endif
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}
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2007-07-05 16:01:45 +00:00
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2007-07-05 16:01:52 +00:00
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if (!stat("/env/init", &s)) {
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printf("running /env/init\n");
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run_command("exec /env/init", 0);
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}
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2007-07-05 16:01:24 +00:00
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/* main_loop() can return to retry autoboot, if so just run it again. */
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2007-09-13 13:22:23 +00:00
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for (;;)
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2007-07-05 16:01:14 +00:00
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main_loop ();
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/* NOTREACHED - no way out of command loop except booting */
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}
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void hang (void)
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{
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puts ("### ERROR ### Please RESET the board ###\n");
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for (;;);
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}
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