165 lines
3.9 KiB
C
165 lines
3.9 KiB
C
/*
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* (C) Copyright 2007 Michal Simek
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* (C) Copyright 2004 Atmark Techno, Inc.
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*
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* Michal SIMEK <monstr@monstr.eu>
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* Yasushi SHOJI <yashi@atmark-techno.com>
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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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#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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DECLARE_GLOBAL_DATA_PTR;
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extern image_header_t header; /* from cmd_bootm.c */
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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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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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ulong len = 0, checksum;
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ulong initrd_start, initrd_end;
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ulong data;
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/* First parameter is mapped to $r5 for kernel boot args */
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void (*theKernel) (char *);
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image_header_t *hdr = &header;
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char *commandline = getenv ("bootargs");
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int i;
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theKernel = (void (*)(char *))ntohl (hdr->ih_ep);
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/* Check if there is an initrd image */
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if (argc >= 3) {
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show_boot_progress (9);
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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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show_boot_progress (-10);
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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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show_boot_progress (-11);
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do_reset (cmdtp, flag, argc, argv);
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}
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show_boot_progress (10);
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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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show_boot_progress (-12);
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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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show_boot_progress (11);
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if ((hdr->ih_os != IH_OS_LINUX) ||
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(hdr->ih_arch != IH_CPU_MICROBLAZE) ||
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(hdr->ih_type != IH_TYPE_RAMDISK)) {
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printf ("No Linux Microblaze Ramdisk Image\n");
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show_boot_progress (-13);
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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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show_boot_progress (13);
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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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show_boot_progress (14);
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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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} else {
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initrd_start = 0;
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initrd_end = 0;
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}
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show_boot_progress (15);
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#ifdef DEBUG
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printf ("## Transferring control to Linux (at address %08lx) ...\n",
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(ulong) theKernel);
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#endif
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theKernel (commandline);
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}
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