1 files changed, 142 insertions, 0 deletions
diff --git a/lib_i386/bootm.c b/lib_i386/bootm.c
new file mode 100644
index 000000000..27a2b0d9a
--- /dev/null
+++ b/lib_i386/bootm.c
@@ -0,0 +1,142 @@
+/*
+ * (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);
+
+}