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https://github.com/brain-hackers/u-boot-brain
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![wdenk](/assets/img/avatar_default.png)
- remove trailing white space, trailing empty lines, C++ comments, etc. - split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c) * Patches by Kenneth Johansson, 25 Jun 2003: - major rework of command structure (work done mostly by Michal Cendrowski and Joakim Kristiansen)
174 lines
4.1 KiB
C
174 lines
4.1 KiB
C
/*
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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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* Copyright (C) 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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, MA 02111-1307 USA
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*
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*/
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#include <common.h>
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#include <command.h>
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#include <image.h>
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#include <zlib.h>
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#include <asm/byteorder.h>
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#include <asm/zimage.h>
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/*cmd_boot.c*/
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extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
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extern image_header_t header; /* from cmd_bootm.c */
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image_header_t *fake_header(image_header_t *hdr, void *ptr, int size)
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{
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/* try each supported image type in order */
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if (NULL != fake_zimage_header(hdr, ptr, size)) {
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return hdr;
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}
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return NULL;
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}
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void do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
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ulong addr, ulong *len_ptr, int verify)
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{
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void *base_ptr;
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ulong len = 0, checksum;
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ulong initrd_start, initrd_end;
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ulong data;
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image_header_t *hdr = &header;
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/*
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* Check if there is an initrd image
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*/
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if (argc >= 3) {
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addr = simple_strtoul(argv[2], NULL, 16);
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printf ("## Loading Ramdisk Image at %08lx ...\n", addr);
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/* Copy header so we can blank CRC field for re-calculation */
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memcpy (&header, (char *)addr, sizeof(image_header_t));
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if (ntohl(hdr->ih_magic) != IH_MAGIC) {
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printf ("Bad Magic Number\n");
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do_reset (cmdtp, flag, argc, argv);
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}
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data = (ulong)&header;
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len = sizeof(image_header_t);
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checksum = ntohl(hdr->ih_hcrc);
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hdr->ih_hcrc = 0;
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if (crc32 (0, (char *)data, len) != checksum) {
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printf ("Bad Header Checksum\n");
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do_reset (cmdtp, flag, argc, argv);
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}
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print_image_hdr (hdr);
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data = addr + sizeof(image_header_t);
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len = ntohl(hdr->ih_size);
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if (verify) {
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ulong csum = 0;
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printf (" Verifying Checksum ... ");
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csum = crc32 (0, (char *)data, len);
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if (csum != ntohl(hdr->ih_dcrc)) {
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printf ("Bad Data CRC\n");
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do_reset (cmdtp, flag, argc, argv);
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}
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printf ("OK\n");
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}
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if ((hdr->ih_os != IH_OS_LINUX) ||
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(hdr->ih_arch != IH_CPU_I386) ||
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(hdr->ih_type != IH_TYPE_RAMDISK) ) {
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printf ("No Linux i386 Ramdisk Image\n");
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do_reset (cmdtp, flag, argc, argv);
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}
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/*
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* Now check if we have a multifile image
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*/
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} else if ((hdr->ih_type==IH_TYPE_MULTI) && (len_ptr[1])) {
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ulong tail = ntohl(len_ptr[0]) % 4;
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int i;
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/* skip kernel length and terminator */
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data = (ulong)(&len_ptr[2]);
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/* skip any additional image length fields */
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for (i=1; len_ptr[i]; ++i)
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data += 4;
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/* add kernel length, and align */
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data += ntohl(len_ptr[0]);
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if (tail) {
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data += 4 - tail;
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}
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len = ntohl(len_ptr[1]);
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} else {
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/*
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* no initrd image
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*/
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data = 0;
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}
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#ifdef DEBUG
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if (!data) {
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printf ("No initrd\n");
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}
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#endif
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if (data) {
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initrd_start = data;
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initrd_end = initrd_start + len;
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printf (" Loading Ramdisk to %08lx, end %08lx ... ",
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initrd_start, initrd_end);
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memmove ((void *)initrd_start, (void *)data, len);
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printf ("OK\n");
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} else {
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initrd_start = 0;
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initrd_end = 0;
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}
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base_ptr = load_zimage((void*)addr + sizeof(image_header_t), ntohl(hdr->ih_size),
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initrd_start, initrd_end-initrd_start, 0);
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if (NULL == base_ptr) {
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printf ("## Kernel loading failed ...\n");
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do_reset(cmdtp, flag, argc, argv);
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}
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#ifdef DEBUG
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printf ("## Transferring control to Linux (at address %08x) ...\n",
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(u32)base_ptr);
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#endif
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/* we assume that the kernel is in place */
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printf("\nStarting kernel ...\n\n");
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boot_zimage(base_ptr);
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}
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