xref: /openbmc/u-boot/tools/mkimage.c (revision 3b57fe0a) 
1 /*
2  * (C) Copyright 2000-2002
3  * DENX Software Engineering
4  * Wolfgang Denk, wd@denx.de
5  * All rights reserved.
6  */
7 
8 #include <errno.h>
9 #include <fcntl.h>
10 #include <stdio.h>
11 #include <stdlib.h>
12 #include <string.h>
13 #ifndef __WIN32__
14 #include <netinet/in.h>		/* for host / network byte order conversions	*/
15 #endif
16 #include <sys/mman.h>
17 #include <sys/stat.h>
18 #include <time.h>
19 #include <unistd.h>
20 
21 #if defined(__BEOS__) || defined(__NetBSD__) || defined(__APPLE__)
22 #include <inttypes.h>
23 #endif
24 
25 #ifdef __WIN32__
26 typedef unsigned int __u32;
27 
28 #define SWAP_LONG(x) \
29 	((__u32)( \
30 		(((__u32)(x) & (__u32)0x000000ffUL) << 24) | \
31 		(((__u32)(x) & (__u32)0x0000ff00UL) <<  8) | \
32 		(((__u32)(x) & (__u32)0x00ff0000UL) >>  8) | \
33 		(((__u32)(x) & (__u32)0xff000000UL) >> 24) ))
34 typedef		unsigned char	uint8_t;
35 typedef		unsigned short	uint16_t;
36 typedef		unsigned int	uint32_t;
37 
38 #define     ntohl(a)	SWAP_LONG(a)
39 #define     htonl(a)	SWAP_LONG(a)
40 #endif	/* __WIN32__ */
41 
42 #include <image.h>
43 
44 extern int errno;
45 
46 #ifndef MAP_FAILED
47 #define MAP_FAILED (-1)
48 #endif
49 
50 char *cmdname;
51 
52 extern unsigned long crc32 (unsigned long crc, const char *buf, unsigned int len);
53 
54 typedef struct table_entry {
55 	int	val;		/* as defined in image.h	*/
56 	char	*sname;		/* short (input) name		*/
57 	char	*lname;		/* long (output) name		*/
58 } table_entry_t;
59 
60 table_entry_t arch_name[] = {
61     {	IH_CPU_INVALID,	NULL,		"Invalid CPU",		},
62     {	IH_CPU_ALPHA,	"alpha",	"Alpha",		},
63     {	IH_CPU_ARM,	"arm",		"ARM",			},
64     {	IH_CPU_I386,	"x86",		"Intel x86",		},
65     {	IH_CPU_IA64,	"ia64",		"IA64",			},
66     {	IH_CPU_MIPS,	"mips",		"MIPS",			},
67     {	IH_CPU_MIPS64,	"mips64",	"MIPS 64 Bit",		},
68     {	IH_CPU_PPC,	"ppc",		"PowerPC",		},
69     {	IH_CPU_S390,	"s390",		"IBM S390",		},
70     {	IH_CPU_SH,	"sh",		"SuperH",		},
71     {	IH_CPU_SPARC,	"sparc",	"SPARC",		},
72     {	IH_CPU_SPARC64,	"sparc64",	"SPARC 64 Bit",		},
73     {	-1,		"",		"",			},
74 };
75 
76 table_entry_t os_name[] = {
77     {	IH_OS_INVALID,	NULL,		"Invalid OS",		},
78     {	IH_OS_OPENBSD,	"openbsd",	"OpenBSD",		},
79     {	IH_OS_NETBSD,	"netbsd",	"NetBSD",		},
80     {	IH_OS_FREEBSD,	"freebsd",	"FreeBSD",		},
81     {	IH_OS_4_4BSD,	"4_4bsd",	"4_4BSD",		},
82     {	IH_OS_LINUX,	"linux",	"Linux",		},
83     {	IH_OS_SVR4,	"svr4",		"SVR4",			},
84     {	IH_OS_ESIX,	"esix",		"Esix",			},
85     {	IH_OS_SOLARIS,	"solaris",	"Solaris",		},
86     {	IH_OS_IRIX,	"irix",		"Irix",			},
87     {	IH_OS_SCO,	"sco",		"SCO",			},
88     {	IH_OS_DELL,	"dell",		"Dell",			},
89     {	IH_OS_NCR,	"ncr",		"NCR",			},
90     {	IH_OS_LYNXOS,	"lynxos",	"LynxOS",		},
91     {	IH_OS_VXWORKS,	"vxworks",	"VxWorks",		},
92     {	IH_OS_PSOS,	"psos",		"pSOS",			},
93     {	IH_OS_QNX,	"qnx",		"QNX",			},
94     {	IH_OS_U_BOOT,	"u-boot",	"U-Boot",		},
95     {	IH_OS_RTEMS,	"rtems",	"RTEMS",		},
96     {	IH_OS_ARTOS,	"artos",	"ARTOS",		},
97     {	-1,		"",		"",			},
98 };
99 
100 table_entry_t type_name[] = {
101     {	IH_TYPE_INVALID,    NULL,	  "Invalid Image",	},
102     {	IH_TYPE_STANDALONE, "standalone", "Standalone Program", },
103     {	IH_TYPE_KERNEL,	    "kernel",	  "Kernel Image",	},
104     {	IH_TYPE_RAMDISK,    "ramdisk",	  "RAMDisk Image",	},
105     {	IH_TYPE_MULTI,	    "multi",	  "Multi-File Image",	},
106     {	IH_TYPE_FIRMWARE,   "firmware",	  "Firmware",		},
107     {	IH_TYPE_SCRIPT,     "script",	  "Script",		},
108     {	-1,		    "",		  "",			},
109 };
110 
111 table_entry_t comp_name[] = {
112     {	IH_COMP_NONE,	"none",		"uncompressed",		},
113     {	IH_COMP_GZIP,	"gzip",		"gzip compressed",	},
114     {	IH_COMP_BZIP2,	"bzip2",	"bzip2 compressed",	},
115     {	-1,		"",		"",			},
116 };
117 
118 static	void	copy_file (int, const char *, int);
119 static	void	usage	(void);
120 static	void	print_header (image_header_t *);
121 static	void	print_type (image_header_t *);
122 static	char	*put_table_entry (table_entry_t *, char *, int);
123 static	char	*put_arch (int);
124 static	char	*put_type (int);
125 static	char	*put_os   (int);
126 static	char	*put_comp (int);
127 static	int	get_table_entry (table_entry_t *, char *, char *);
128 static	int	get_arch(char *);
129 static	int	get_comp(char *);
130 static	int	get_os  (char *);
131 static	int	get_type(char *);
132 
133 
134 char	*datafile;
135 char	*imagefile;
136 
137 int dflag    = 0;
138 int eflag    = 0;
139 int lflag    = 0;
140 int vflag    = 0;
141 int xflag    = 0;
142 int opt_os   = IH_OS_LINUX;
143 int opt_arch = IH_CPU_PPC;
144 int opt_type = IH_TYPE_KERNEL;
145 int opt_comp = IH_COMP_GZIP;
146 
147 image_header_t header;
148 image_header_t *hdr = &header;
149 
150 int
151 main (int argc, char **argv)
152 {
153 	int ifd;
154 	uint32_t checksum;
155 	uint32_t addr;
156 	uint32_t ep;
157 	struct stat sbuf;
158 	unsigned char *ptr;
159 	char *name = "";
160 
161 	cmdname = *argv;
162 
163 	addr = ep = 0;
164 
165 	while (--argc > 0 && **++argv == '-') {
166 		while (*++*argv) {
167 			switch (**argv) {
168 			case 'l':
169 				lflag = 1;
170 				break;
171 			case 'A':
172 				if ((--argc <= 0) ||
173 				    (opt_arch = get_arch(*++argv)) < 0)
174 					usage ();
175 				goto NXTARG;
176 			case 'C':
177 				if ((--argc <= 0) ||
178 				    (opt_comp = get_comp(*++argv)) < 0)
179 					usage ();
180 				goto NXTARG;
181 			case 'O':
182 				if ((--argc <= 0) ||
183 				    (opt_os = get_os(*++argv)) < 0)
184 					usage ();
185 				goto NXTARG;
186 			case 'T':
187 				if ((--argc <= 0) ||
188 				    (opt_type = get_type(*++argv)) < 0)
189 					usage ();
190 				goto NXTARG;
191 
192 			case 'a':
193 				if (--argc <= 0)
194 					usage ();
195 				addr = strtoul (*++argv, (char **)&ptr, 16);
196 				if (*ptr) {
197 					fprintf (stderr,
198 						"%s: invalid load address %s\n",
199 						cmdname, *argv);
200 					exit (EXIT_FAILURE);
201 				}
202 				goto NXTARG;
203 			case 'd':
204 				if (--argc <= 0)
205 					usage ();
206 				datafile = *++argv;
207 				dflag = 1;
208 				goto NXTARG;
209 			case 'e':
210 				if (--argc <= 0)
211 					usage ();
212 				ep = strtoul (*++argv, (char **)&ptr, 16);
213 				if (*ptr) {
214 					fprintf (stderr,
215 						"%s: invalid entry point %s\n",
216 						cmdname, *argv);
217 					exit (EXIT_FAILURE);
218 				}
219 				eflag = 1;
220 				goto NXTARG;
221 			case 'n':
222 				if (--argc <= 0)
223 					usage ();
224 				name = *++argv;
225 				goto NXTARG;
226 			case 'v':
227 				vflag++;
228 				break;
229 			case 'x':
230 				xflag++;
231 				break;
232 			default:
233 				usage ();
234 			}
235 		}
236 NXTARG:		;
237 	}
238 
239 	if ((argc != 1) || ((lflag ^ dflag) == 0))
240 		usage();
241 
242 	if (!eflag) {
243 		ep = addr;
244 		/* If XIP, entry point must be after the U-Boot header */
245 		if (xflag)
246 			ep += sizeof(image_header_t);
247 	}
248 
249 	/*
250 	 * If XIP, ensure the entry point is equal to the load address plus
251 	 * the size of the U-Boot header.
252 	 */
253 	if (xflag) {
254 		if (ep != addr + sizeof(image_header_t)) {
255 			fprintf (stderr, "%s: For XIP, the entry point must be the load addr + %lu\n",
256 				cmdname,
257 				(unsigned long)sizeof(image_header_t));
258 			exit (EXIT_FAILURE);
259 		}
260 	}
261 
262 	imagefile = *argv;
263 
264 	if (lflag) {
265 		ifd = open(imagefile, O_RDONLY);
266 	} else {
267 #ifdef __WIN32__
268 		ifd = open(imagefile, O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
269 #else
270 		ifd = open(imagefile, O_RDWR|O_CREAT|O_TRUNC, 0666);
271 #endif
272 	}
273 
274 	if (ifd < 0) {
275 		fprintf (stderr, "%s: Can't open %s: %s\n",
276 			cmdname, imagefile, strerror(errno));
277 		exit (EXIT_FAILURE);
278 	}
279 
280 	if (lflag) {
281 		int len;
282 		char *data;
283 		/*
284 		 * list header information of existing image
285 		 */
286 		if (fstat(ifd, &sbuf) < 0) {
287 			fprintf (stderr, "%s: Can't stat %s: %s\n",
288 				cmdname, imagefile, strerror(errno));
289 			exit (EXIT_FAILURE);
290 		}
291 
292 		if (sbuf.st_size < sizeof(image_header_t)) {
293 			fprintf (stderr,
294 				"%s: Bad size: \"%s\" is no valid image\n",
295 				cmdname, imagefile);
296 			exit (EXIT_FAILURE);
297 		}
298 
299 		ptr = (unsigned char *)mmap(0, sbuf.st_size,
300 					    PROT_READ, MAP_SHARED, ifd, 0);
301 		if ((caddr_t)ptr == (caddr_t)-1) {
302 			fprintf (stderr, "%s: Can't read %s: %s\n",
303 				cmdname, imagefile, strerror(errno));
304 			exit (EXIT_FAILURE);
305 		}
306 
307 		/*
308 		 * create copy of header so that we can blank out the
309 		 * checksum field for checking - this can't be done
310 		 * on the PROT_READ mapped data.
311 		 */
312 		memcpy (hdr, ptr, sizeof(image_header_t));
313 
314 		if (ntohl(hdr->ih_magic) != IH_MAGIC) {
315 			fprintf (stderr,
316 				"%s: Bad Magic Number: \"%s\" is no valid image\n",
317 				cmdname, imagefile);
318 			exit (EXIT_FAILURE);
319 		}
320 
321 		data = (char *)hdr;
322 		len  = sizeof(image_header_t);
323 
324 		checksum = ntohl(hdr->ih_hcrc);
325 		hdr->ih_hcrc = htonl(0);	/* clear for re-calculation */
326 
327 		if (crc32 (0, data, len) != checksum) {
328 			fprintf (stderr,
329 				"*** Warning: \"%s\" has bad header checksum!\n",
330 				imagefile);
331 		}
332 
333 		data = (char *)(ptr + sizeof(image_header_t));
334 		len  = sbuf.st_size - sizeof(image_header_t) ;
335 
336 		if (crc32 (0, data, len) != ntohl(hdr->ih_dcrc)) {
337 			fprintf (stderr,
338 				"*** Warning: \"%s\" has corrupted data!\n",
339 				imagefile);
340 		}
341 
342 		/* for multi-file images we need the data part, too */
343 		print_header ((image_header_t *)ptr);
344 
345 		(void) munmap((void *)ptr, sbuf.st_size);
346 		(void) close (ifd);
347 
348 		exit (EXIT_SUCCESS);
349 	}
350 
351 	/*
352 	 * Must be -w then:
353 	 *
354 	 * write dummy header, to be fixed later
355 	 */
356 	memset (hdr, 0, sizeof(image_header_t));
357 
358 	if (write(ifd, hdr, sizeof(image_header_t)) != sizeof(image_header_t)) {
359 		fprintf (stderr, "%s: Write error on %s: %s\n",
360 			cmdname, imagefile, strerror(errno));
361 		exit (EXIT_FAILURE);
362 	}
363 
364 	if (opt_type == IH_TYPE_MULTI || opt_type == IH_TYPE_SCRIPT) {
365 		char *file = datafile;
366 		unsigned long size;
367 
368 		for (;;) {
369 			char *sep = NULL;
370 
371 			if (file) {
372 				if ((sep = strchr(file, ':')) != NULL) {
373 					*sep = '\0';
374 				}
375 
376 				if (stat (file, &sbuf) < 0) {
377 					fprintf (stderr, "%s: Can't stat %s: %s\n",
378 						cmdname, file, strerror(errno));
379 					exit (EXIT_FAILURE);
380 				}
381 				size = htonl(sbuf.st_size);
382 			} else {
383 				size = 0;
384 			}
385 
386 			if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
387 				fprintf (stderr, "%s: Write error on %s: %s\n",
388 					cmdname, imagefile, strerror(errno));
389 				exit (EXIT_FAILURE);
390 			}
391 
392 			if (!file) {
393 				break;
394 			}
395 
396 			if (sep) {
397 				*sep = ':';
398 				file = sep + 1;
399 			} else {
400 				file = NULL;
401 			}
402 		}
403 
404 		file = datafile;
405 
406 		for (;;) {
407 			char *sep = strchr(file, ':');
408 			if (sep) {
409 				*sep = '\0';
410 				copy_file (ifd, file, 1);
411 				*sep++ = ':';
412 				file = sep;
413 			} else {
414 				copy_file (ifd, file, 0);
415 				break;
416 			}
417 		}
418 	} else {
419 		copy_file (ifd, datafile, 0);
420 	}
421 
422 	/* We're a bit of paranoid */
423 #if defined(_POSIX_SYNCHRONIZED_IO) && !defined(__sun__)
424 	(void) fdatasync (ifd);
425 #else
426 	(void) fsync (ifd);
427 #endif
428 
429 	if (fstat(ifd, &sbuf) < 0) {
430 		fprintf (stderr, "%s: Can't stat %s: %s\n",
431 			cmdname, imagefile, strerror(errno));
432 		exit (EXIT_FAILURE);
433 	}
434 
435 	ptr = (unsigned char *)mmap(0, sbuf.st_size,
436 				    PROT_READ|PROT_WRITE, MAP_SHARED, ifd, 0);
437 	if (ptr == (unsigned char *)MAP_FAILED) {
438 		fprintf (stderr, "%s: Can't map %s: %s\n",
439 			cmdname, imagefile, strerror(errno));
440 		exit (EXIT_FAILURE);
441 	}
442 
443 	hdr = (image_header_t *)ptr;
444 
445 	checksum = crc32 (0,
446 			  (const char *)(ptr + sizeof(image_header_t)),
447 			  sbuf.st_size - sizeof(image_header_t)
448 			 );
449 
450 	/* Build new header */
451 	hdr->ih_magic = htonl(IH_MAGIC);
452 	hdr->ih_time  = htonl(sbuf.st_mtime);
453 	hdr->ih_size  = htonl(sbuf.st_size - sizeof(image_header_t));
454 	hdr->ih_load  = htonl(addr);
455 	hdr->ih_ep    = htonl(ep);
456 	hdr->ih_dcrc  = htonl(checksum);
457 	hdr->ih_os    = opt_os;
458 	hdr->ih_arch  = opt_arch;
459 	hdr->ih_type  = opt_type;
460 	hdr->ih_comp  = opt_comp;
461 
462 	strncpy((char *)hdr->ih_name, name, IH_NMLEN);
463 
464 	checksum = crc32(0,(const char *)hdr,sizeof(image_header_t));
465 
466 	hdr->ih_hcrc = htonl(checksum);
467 
468 	print_header (hdr);
469 
470 	(void) munmap((void *)ptr, sbuf.st_size);
471 
472 	/* We're a bit of paranoid */
473 #if defined(_POSIX_SYNCHRONIZED_IO) && !defined(__sun__)
474 	(void) fdatasync (ifd);
475 #else
476 	(void) fsync (ifd);
477 #endif
478 
479 	if (close(ifd)) {
480 		fprintf (stderr, "%s: Write error on %s: %s\n",
481 			cmdname, imagefile, strerror(errno));
482 		exit (EXIT_FAILURE);
483 	}
484 
485 	exit (EXIT_SUCCESS);
486 }
487 
488 static void
489 copy_file (int ifd, const char *datafile, int pad)
490 {
491 	int dfd;
492 	struct stat sbuf;
493 	unsigned char *ptr;
494 	int tail;
495 	int zero = 0;
496 	int offset = 0;
497 	int size;
498 
499 	if (vflag) {
500 		fprintf (stderr, "Adding Image %s\n", datafile);
501 	}
502 
503 	if ((dfd = open(datafile, O_RDONLY)) < 0) {
504 		fprintf (stderr, "%s: Can't open %s: %s\n",
505 			cmdname, datafile, strerror(errno));
506 		exit (EXIT_FAILURE);
507 	}
508 
509 	if (fstat(dfd, &sbuf) < 0) {
510 		fprintf (stderr, "%s: Can't stat %s: %s\n",
511 			cmdname, datafile, strerror(errno));
512 		exit (EXIT_FAILURE);
513 	}
514 
515 	ptr = (unsigned char *)mmap(0, sbuf.st_size,
516 				    PROT_READ, MAP_SHARED, dfd, 0);
517 	if (ptr == (unsigned char *)MAP_FAILED) {
518 		fprintf (stderr, "%s: Can't read %s: %s\n",
519 			cmdname, datafile, strerror(errno));
520 		exit (EXIT_FAILURE);
521 	}
522 
523 	if (xflag) {
524 		unsigned char *p = NULL;
525 		/*
526 		 * XIP: do not append the image_header_t at the
527 		 * beginning of the file, but consume the space
528 		 * reserved for it.
529 		 */
530 
531 		if (sbuf.st_size < sizeof(image_header_t)) {
532 			fprintf (stderr,
533 				"%s: Bad size: \"%s\" is too small for XIP\n",
534 				cmdname, datafile);
535 			exit (EXIT_FAILURE);
536 		}
537 
538 		for (p=ptr; p < ptr+sizeof(image_header_t); p++) {
539 			if ( *p != 0xff ) {
540 				fprintf (stderr,
541 					"%s: Bad file: \"%s\" has invalid buffer for XIP\n",
542 					cmdname, datafile);
543 				exit (EXIT_FAILURE);
544 			}
545 		}
546 
547 		offset = sizeof(image_header_t);
548 	}
549 
550 	size = sbuf.st_size - offset;
551 	if (write(ifd, ptr + offset, size) != size) {
552 		fprintf (stderr, "%s: Write error on %s: %s\n",
553 			cmdname, imagefile, strerror(errno));
554 		exit (EXIT_FAILURE);
555 	}
556 
557 	if (pad && ((tail = size % 4) != 0)) {
558 
559 		if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
560 			fprintf (stderr, "%s: Write error on %s: %s\n",
561 				cmdname, imagefile, strerror(errno));
562 			exit (EXIT_FAILURE);
563 		}
564 	}
565 
566 	(void) munmap((void *)ptr, sbuf.st_size);
567 	(void) close (dfd);
568 }
569 
570 void
571 usage ()
572 {
573 	fprintf (stderr, "Usage: %s -l image\n"
574 			 "          -l ==> list image header information\n"
575 			 "       %s -A arch -O os -T type -C comp "
576 			 "-a addr -e ep -n name -d data_file[:data_file...] image\n",
577 		cmdname, cmdname);
578 	fprintf (stderr, "          -A ==> set architecture to 'arch'\n"
579 			 "          -O ==> set operating system to 'os'\n"
580 			 "          -T ==> set image type to 'type'\n"
581 			 "          -C ==> set compression type 'comp'\n"
582 			 "          -a ==> set load address to 'addr' (hex)\n"
583 			 "          -e ==> set entry point to 'ep' (hex)\n"
584 			 "          -n ==> set image name to 'name'\n"
585 			 "          -d ==> use image data from 'datafile'\n"
586 			 "          -x ==> set XIP (execute in place)\n"
587 		);
588 	exit (EXIT_FAILURE);
589 }
590 
591 static void
592 print_header (image_header_t *hdr)
593 {
594 	time_t timestamp;
595 	uint32_t size;
596 
597 	timestamp = (time_t)ntohl(hdr->ih_time);
598 	size = ntohl(hdr->ih_size);
599 
600 	printf ("Image Name:   %.*s\n", IH_NMLEN, hdr->ih_name);
601 	printf ("Created:      %s", ctime(&timestamp));
602 	printf ("Image Type:   "); print_type(hdr);
603 	printf ("Data Size:    %d Bytes = %.2f kB = %.2f MB\n",
604 		size, (double)size / 1.024e3, (double)size / 1.048576e6 );
605 	printf ("Load Address: 0x%08x\n", ntohl(hdr->ih_load));
606 	printf ("Entry Point:  0x%08x\n", ntohl(hdr->ih_ep));
607 
608 	if (hdr->ih_type == IH_TYPE_MULTI || hdr->ih_type == IH_TYPE_SCRIPT) {
609 		int i, ptrs;
610 		uint32_t pos;
611 		unsigned long *len_ptr = (unsigned long *) (
612 					(unsigned long)hdr + sizeof(image_header_t)
613 				);
614 
615 		/* determine number of images first (to calculate image offsets) */
616 		for (i=0; len_ptr[i]; ++i)	/* null pointer terminates list */
617 			;
618 		ptrs = i;		/* null pointer terminates list */
619 
620 		pos = sizeof(image_header_t) + ptrs * sizeof(long);
621 		printf ("Contents:\n");
622 		for (i=0; len_ptr[i]; ++i) {
623 			size = ntohl(len_ptr[i]);
624 
625 			printf ("   Image %d: %8d Bytes = %4d kB = %d MB\n",
626 				i, size, size>>10, size>>20);
627 			if (hdr->ih_type == IH_TYPE_SCRIPT && i > 0) {
628 				/*
629 				 * the user may need to know offsets
630 				 * if planning to do something with
631 				 * multiple files
632 				 */
633 				printf ("    Offset = %08x\n", pos);
634 			}
635 			/* copy_file() will pad the first files to even word align */
636 			size += 3;
637 			size &= ~3;
638 			pos += size;
639 		}
640 	}
641 }
642 
643 
644 static void
645 print_type (image_header_t *hdr)
646 {
647 	printf ("%s %s %s (%s)\n",
648 		put_arch (hdr->ih_arch),
649 		put_os   (hdr->ih_os  ),
650 		put_type (hdr->ih_type),
651 		put_comp (hdr->ih_comp)
652 	);
653 }
654 
655 static char *put_arch (int arch)
656 {
657 	return (put_table_entry(arch_name, "Unknown Architecture", arch));
658 }
659 
660 static char *put_os (int os)
661 {
662 	return (put_table_entry(os_name, "Unknown OS", os));
663 }
664 
665 static char *put_type (int type)
666 {
667 	return (put_table_entry(type_name, "Unknown Image", type));
668 }
669 
670 static char *put_comp (int comp)
671 {
672 	return (put_table_entry(comp_name, "Unknown Compression", comp));
673 }
674 
675 static char *put_table_entry (table_entry_t *table, char *msg, int type)
676 {
677 	for (; table->val>=0; ++table) {
678 		if (table->val == type)
679 			return (table->lname);
680 	}
681 	return (msg);
682 }
683 
684 static int get_arch(char *name)
685 {
686 	return (get_table_entry(arch_name, "CPU", name));
687 }
688 
689 
690 static int get_comp(char *name)
691 {
692 	return (get_table_entry(comp_name, "Compression", name));
693 }
694 
695 
696 static int get_os (char *name)
697 {
698 	return (get_table_entry(os_name, "OS", name));
699 }
700 
701 
702 static int get_type(char *name)
703 {
704 	return (get_table_entry(type_name, "Image", name));
705 }
706 
707 static int get_table_entry (table_entry_t *table, char *msg, char *name)
708 {
709 	table_entry_t *t;
710 	int first = 1;
711 
712 	for (t=table; t->val>=0; ++t) {
713 		if (t->sname && strcasecmp(t->sname, name)==0)
714 			return (t->val);
715 	}
716 	fprintf (stderr, "\nInvalid %s Type - valid names are", msg);
717 	for (t=table; t->val>=0; ++t) {
718 		if (t->sname == NULL)
719 			continue;
720 		fprintf (stderr, "%c %s", (first) ? ':' : ',', t->sname);
721 		first = 0;
722 	}
723 	fprintf (stderr, "\n");
724 	return (-1);
725 }
726