patch-2.4.5 linux/arch/ppc/boot/utils/mksimage.c

• Lines: 128
• Date: Thu May 24 15:02:07 2001
• Orig file: v2.4.4/linux/arch/ppc/boot/utils/mksimage.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.4/linux/arch/ppc/boot/utils/mksimage.c linux/arch/ppc/boot/utils/mksimage.c
@@ -0,0 +1,127 @@
+/*
+ * BK Id: SCCS/s.mksimage.c 1.6 05/18/01 15:16:42 cort
+ */
+/*
+ *
+ *
+ *
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+
+
+#define SIZE 1024
+#define BLOCK_ALIGN(x)  (((x)+SIZE-1)&(~(SIZE-1)))
+
+static void
+die(const char *fmt, ...)
+{
+	va_list args;
+	va_start(args, fmt);
+	vfprintf(stderr, fmt, args);
+	fputc('\n', stderr);
+	exit(1);
+}
+
+static void
+usage(void)
+{
+	printf("Usage: mkbinimg <bootstrap> <kernel> <ramdisk> -o <binary>\n");
+	exit(1);
+}
+
+static int
+copy_blocks(int ifd, int ofd, unsigned long *offset, unsigned long *size)
+{
+	off_t cur;
+	int amt;
+	unsigned long len = 0;
+	char buffer[SIZE];
+
+	cur = lseek(ofd, 0, SEEK_CUR);
+
+	if (cur % SIZE) {
+		cur = BLOCK_ALIGN(cur);
+		cur = lseek(ofd, cur, SEEK_SET);
+	}
+
+	*offset = (unsigned long) cur;
+	while((amt = read(ifd, buffer, SIZE)) > 0) {
+		write(ofd, buffer, amt);
+		len += amt;
+	}
+	*size = len;
+	return 0;
+}
+
+
+int
+main(int argc, char *argv[])
+{
+	char *kernel, *loader, *rdimage = NULL;
+	unsigned long ld_off, kern_off, rd_off;
+	unsigned long ld_size, kern_size, rd_size;
+	int fd, ofd, len;
+	char buffer[500];
+
+	if (argc < 5 && !strcmp(argv[argc-2], "-o"))
+		usage();
+
+	if (argc > 5)
+		rdimage = argv[3];
+
+	kernel = argv[2];
+	loader = argv[1];
+
+	ofd = open(argv[argc-1], (O_RDWR|O_CREAT), 0755);
+	if (ofd < 0) {
+		die("can't open %s: %s", argv[5], strerror(errno));
+	}
+
+	ld_off = kern_off = rd_off = 0;
+	ld_size = kern_size = rd_size = 0;
+	memset(buffer, 0, 500);
+	len = 0;
+
+	fd = open(loader, O_RDONLY);
+	if (fd < 0) 
+		die("can't open loader: %s", strerror(errno));
+
+	copy_blocks(fd, ofd, &ld_off, &ld_size);
+	len = sprintf(buffer, "bootloader: %x %x\n", ld_off, ld_size);
+	close(fd);
+
+	fd = open(kernel, O_RDONLY);
+	if (fd < 0)
+		die("can't open kernel: %s", strerror(errno));
+
+	copy_blocks(fd, ofd, &kern_off, &kern_size);
+	len += sprintf(buffer+len, "zimage: %x %x\n", kern_off, kern_size);
+	close(fd);
+	
+	if (rdimage) {
+		fd = open(rdimage, O_RDONLY);
+		if (fd < 0)
+			die("can't get ramdisk: %s", strerror(errno));
+		
+		copy_blocks(fd, ofd, &rd_off, &rd_size);
+		close(fd);
+	}
+
+	len += sprintf(buffer+len, "initrd: %x %x", rd_off, rd_size);
+
+	close(ofd);
+
+	printf("%s\n", buffer);
+
+	return 0;
+}
+