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-rw-r--r--lib_i386/bootm.c142
1 files changed, 142 insertions, 0 deletions
diff --git a/lib_i386/bootm.c b/lib_i386/bootm.c
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+/*
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * Copyright (C) 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
+ *
+ * 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 <image.h>
+#include <zlib.h>
+#include <asm/byteorder.h>
+#include <asm/zimage.h>
+
+/*cmd_boot.c*/
+extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
+
+void do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
+ image_header_t *hdr, int verify)
+{
+ void *base_ptr;
+
+ ulong os_data, os_len;
+ ulong rd_data, rd_len;
+ ulong initrd_start, initrd_end;
+ image_header_t *rd_hdr;
+
+ /*
+ * Check if there is an initrd image
+ */
+ if (argc >= 3) {
+ rd_hdr = (image_header_t *)simple_strtoul (argv[2], NULL, 16);
+ printf ("## Loading Ramdisk Image at %08lx ...\n", rd_hdr);
+
+ if (!image_check_magic (rd_hdr)) {
+ printf ("Bad Magic Number\n");
+ do_reset (cmdtp, flag, argc, argv);
+ }
+
+ if (!image_check_hcrc (rd_hdr)) {
+ printf ("Bad Header Checksum\n");
+ do_reset (cmdtp, flag, argc, argv);
+ }
+
+ print_image_hdr (rd_hdr);
+
+ rd_data = image_get_data (rd_hdr);
+ rd_len = image_get_data_size (rd_hdr);
+
+ if (verify) {
+ printf (" Verifying Checksum ... ");
+ if (!image_check_dcrc (rd_hdr)) {
+ printf ("Bad Data CRC\n");
+ do_reset (cmdtp, flag, argc, argv);
+ }
+ printf ("OK\n");
+ }
+
+ if (!image_check_os (rd_hdr, IH_OS_LINUX) ||
+ !image_check_arch (rd_hdr, IH_ARCH_I386) ||
+ !image_check_type (rd_hdr, IH_TYPE_RAMDISK)) {
+ printf ("No Linux i386 Ramdisk Image\n");
+ do_reset (cmdtp, flag, argc, argv);
+ }
+
+ /*
+ * Now check if we have a multifile image
+ */
+ } else if (image_check_type (hdr, IH_TYPE_MULTI)) {
+ /*
+ * Get second entry data start address and len
+ */
+ image_multi_getimg (hdr, 1, &rd_data, &rd_len);
+ } else {
+ /*
+ * no initrd image
+ */
+ rd_data = rd_len = 0;
+ }
+
+#ifdef DEBUG
+ if (!rd_data) {
+ printf ("No initrd\n");
+ }
+#endif
+
+ if (rd_data) {
+ initrd_start = rd_data;
+ initrd_end = initrd_start + rd_len;
+ printf (" Loading Ramdisk to %08lx, end %08lx ... ",
+ initrd_start, initrd_end);
+ memmove ((void *)initrd_start, (void *)rd_data, rd_len);
+ printf ("OK\n");
+ } else {
+ initrd_start = 0;
+ initrd_end = 0;
+ }
+
+ /* if multi-part image, we need to advance base ptr */
+ if (image_check_type (hdr, IH_TYPE_MULTI)) {
+ image_multi_getimg (hdr, 0, &os_data, &os_len);
+ } else {
+ os_data = image_get_data (hdr);
+ os_len = image_get_data_size (hdr);
+ }
+
+ base_ptr = load_zimage ((void*)os_data, os_len,
+ initrd_start, rd_len, 0);
+
+ if (NULL == base_ptr) {
+ printf ("## Kernel loading failed ...\n");
+ do_reset(cmdtp, flag, argc, argv);
+
+ }
+
+#ifdef DEBUG
+ printf ("## Transferring control to Linux (at address %08x) ...\n",
+ (u32)base_ptr);
+#endif
+
+ /* we assume that the kernel is in place */
+ printf("\nStarting kernel ...\n\n");
+
+ boot_zimage(base_ptr);
+
+}