250 lines
6.0 KiB
C
250 lines
6.0 KiB
C
/*
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* (C) Copyright 2000-2006
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* Wolfgang Denk, DENX Software Engineering, wd@denx.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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*/
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/*
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* Boot support
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*/
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#include <common.h>
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#include <driver.h>
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#include <command.h>
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#include <image.h>
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#include <malloc.h>
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#include <environment.h>
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#include <asm/byteorder.h>
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#include <xfuncs.h>
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#include <getopt.h>
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#include <fcntl.h>
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#include <fs.h>
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#include <errno.h>
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#include <boot.h>
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#include <of.h>
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#include <rtc.h>
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#include <init.h>
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#include <of.h>
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#include <magicvar.h>
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#include <uncompress.h>
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#include <memory.h>
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#include <filetype.h>
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#include <binfmt.h>
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#include <globalvar.h>
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#include <magicvar.h>
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#include <asm-generic/memory_layout.h>
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/*
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* Additional oftree size for the fixed tree
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*/
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#define OFTREE_SIZE_INCREASE 0x8000
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static char *bootm_image_name_and_no(const char *name, int *no)
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{
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char *at, *ret;
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if (!name || !*name)
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return NULL;
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*no = 0;
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ret = xstrdup(name);
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at = strchr(ret, '@');
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if (!at)
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return ret;
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*at++ = 0;
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*no = simple_strtoul(at, NULL, 10);
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return ret;
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}
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#define BOOTM_OPTS_COMMON "ca:e:vo:f"
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#ifdef CONFIG_CMD_BOOTM_INITRD
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#define BOOTM_OPTS BOOTM_OPTS_COMMON "L:r:"
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#else
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#define BOOTM_OPTS BOOTM_OPTS_COMMON
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#endif
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unsigned long long getenv_loadaddr(const char *name)
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{
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const char *valstr = getenv(name);
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if (!valstr)
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return UIMAGE_SOME_ADDRESS;
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if (valstr[0] == '\0')
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return UIMAGE_SOME_ADDRESS;
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return simple_strtoull(valstr, NULL, 0);
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}
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static int do_bootm(int argc, char *argv[])
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{
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int opt;
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struct image_data data;
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int ret = 1;
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const char *oftree = NULL, *initrd_file = NULL, *os_file = NULL;
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memset(&data, 0, sizeof(struct image_data));
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data.initrd_address = UIMAGE_INVALID_ADDRESS;
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data.os_address = UIMAGE_SOME_ADDRESS;
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data.verify = 0;
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data.verbose = 0;
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oftree = getenv("global.bootm.oftree");
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os_file = getenv("global.bootm.image");
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data.os_address = getenv_loadaddr("global.bootm.image.loadaddr");
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data.initrd_address = getenv_loadaddr("global.bootm.initrd.loadaddr");
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if (IS_ENABLED(CONFIG_CMD_BOOTM_INITRD))
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initrd_file = getenv("global.bootm.initrd");
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while ((opt = getopt(argc, argv, BOOTM_OPTS)) > 0) {
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switch(opt) {
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case 'c':
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data.verify = 1;
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break;
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#ifdef CONFIG_CMD_BOOTM_INITRD
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case 'L':
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data.initrd_address = simple_strtoul(optarg, NULL, 0);
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break;
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case 'r':
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initrd_file = optarg;
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break;
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#endif
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case 'a':
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data.os_address = simple_strtoul(optarg, NULL, 0);
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break;
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case 'e':
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data.os_entry = simple_strtoul(optarg, NULL, 0);
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break;
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case 'v':
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data.verbose++;
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break;
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case 'o':
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oftree = optarg;
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break;
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case 'f':
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data.force = 1;
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break;
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default:
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break;
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}
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}
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if (optind != argc)
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os_file = argv[optind];
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if (!os_file || !*os_file) {
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printf("no boot image given\n");
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goto err_out;
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}
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if (initrd_file && !*initrd_file)
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initrd_file = NULL;
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if (oftree && !*oftree)
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oftree = NULL;
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data.os_file = bootm_image_name_and_no(os_file, &data.os_num);
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data.oftree_file = bootm_image_name_and_no(oftree, &data.oftree_num);
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data.initrd_file = bootm_image_name_and_no(initrd_file, &data.initrd_num);
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ret = bootm_boot(&data);
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printf("handler failed with %s\n", strerror(-ret));
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err_out:
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free(data.initrd_file);
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free(data.os_file);
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return 1;
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}
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static int bootm_init(void)
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{
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globalvar_add_simple("bootm.image", NULL);
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globalvar_add_simple("bootm.image.loadaddr", NULL);
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globalvar_add_simple("bootm.oftree", NULL);
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if (IS_ENABLED(CONFIG_CMD_BOOTM_INITRD)) {
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globalvar_add_simple("bootm.initrd", NULL);
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globalvar_add_simple("bootm.initrd.loadaddr", NULL);
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}
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return 0;
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}
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late_initcall(bootm_init);
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BAREBOX_CMD_HELP_START(bootm)
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BAREBOX_CMD_HELP_USAGE("bootm [OPTIONS] image\n")
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BAREBOX_CMD_HELP_SHORT("Boot an application image.\n")
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BAREBOX_CMD_HELP_OPT ("-c", "crc check uImage data\n")
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#ifdef CONFIG_CMD_BOOTM_INITRD
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BAREBOX_CMD_HELP_OPT ("-r <initrd>","specify an initrd image\n")
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BAREBOX_CMD_HELP_OPT ("-L <load addr>","specify initrd load address\n")
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#endif
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BAREBOX_CMD_HELP_OPT ("-a <load addr>","specify os load address\n")
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BAREBOX_CMD_HELP_OPT ("-e <ofs>","entry point to the image relative to start (0)\n")
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#ifdef CONFIG_OFTREE
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BAREBOX_CMD_HELP_OPT ("-o <oftree>","specify oftree\n")
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#endif
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#ifdef CONFIG_CMD_BOOTM_VERBOSE
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BAREBOX_CMD_HELP_OPT ("-v","verbose\n")
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#endif
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BAREBOX_CMD_HELP_END
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BAREBOX_CMD_START(bootm)
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.cmd = do_bootm,
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.usage = "boot an application image",
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BAREBOX_CMD_HELP(cmd_bootm_help)
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BAREBOX_CMD_END
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BAREBOX_MAGICVAR(bootargs, "Linux Kernel parameters");
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BAREBOX_MAGICVAR_NAMED(global_bootm_image, global.bootm.image, "bootm default boot image");
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BAREBOX_MAGICVAR_NAMED(global_bootm_image_loadaddr, global.bootm.image.loadaddr, "bootm default boot image loadaddr");
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BAREBOX_MAGICVAR_NAMED(global_bootm_initrd, global.bootm.initrd, "bootm default initrd");
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BAREBOX_MAGICVAR_NAMED(global_bootm_initrd_loadaddr, global.bootm.initrd.loadaddr, "bootm default initrd loadaddr");
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static struct binfmt_hook binfmt_uimage_hook = {
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.type = filetype_uimage,
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.exec = "bootm",
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};
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static int binfmt_uimage_init(void)
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{
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return binfmt_register(&binfmt_uimage_hook);
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}
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fs_initcall(binfmt_uimage_init);
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/**
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* @file
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* @brief Boot support for Linux
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*/
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/**
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* @page boot_preparation Preparing for Boot
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*
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* This chapter describes what's to be done to forward the control from
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* barebox to Linux. This part describes the generic part, below you can find
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* the architecture specific part.
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*
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* - @subpage arm_boot_preparation
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* - @subpage ppc_boot_preparation
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* - @subpage x86_boot_preparation
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*/
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