1 // SPDX-License-Identifier: GPL-2.0
9  * This file builds a disk-image from three different files:
11  * - setup: 8086 machine code, sets up system parm
12  * - system: 80386 code for actual system
13  * - zoffset.h: header with ZO_* defines
52 /*----------------------------------------------------------------------*/
116 	while (len--)  in partial_crc32()
121 static void die(const char * str, ...)  in die()  function
133 	die("Usage: build setup system zoffset.h image");  in usage()
154 		die("Unable to open `%s': %m", fname);  in parse_zoffset()
155 	c = fread(buf, 1, sizeof(buf) - 1, file);  in parse_zoffset()
157 		die("read-error on `zoffset.h'");  in parse_zoffset()
188 		die("Unable to write `%s': %m", argv[4]);  in main()
193 		die("Unable to open `%s': %m", argv[1]);  in main()
196 		die("read-error on `setup'");  in main()
198 		die("The setup must be at least 1024 bytes");  in main()
200 		die("Boot block hasn't got boot flag (0xAA55)");  in main()
209 	memset(buf+c, 0, i-c);  in main()
214 		die("Unable to open `%s': %m", argv[2]);  in main()
216 		die("Unable to stat `%s': %m", argv[2]);  in main()
218 		die("Unexpected file size `%s': %u != %u", argv[2], _edata,  in main()
220 	sz = _edata - 4;  in main()
223 		die("Unable to mmap '%s': %m", argv[2]);  in main()
227 		die("Writing setup failed");  in main()
232 		die("Writing kernel failed");  in main()
237 		die("Writing CRC failed");  in main()
241 		die("Writing image failed");  in main()