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Annotation of qemu/roms/SLOF/romfs/tools/create_flash.c, revision 1.1

1.1     ! root        1: /******************************************************************************
        !             2:  * Copyright (c) 2004, 2008 IBM Corporation
        !             3:  * All rights reserved.
        !             4:  * This program and the accompanying materials
        !             5:  * are made available under the terms of the BSD License
        !             6:  * which accompanies this distribution, and is available at
        !             7:  * http://www.opensource.org/licenses/bsd-license.php
        !             8:  *
        !             9:  * Contributors:
        !            10:  *     IBM Corporation - initial implementation
        !            11:  *****************************************************************************/
        !            12: #include <stdio.h>
        !            13: #include <stdlib.h>
        !            14: #include <sys/types.h>
        !            15: #include <sys/stat.h>
        !            16: #include <fcntl.h>
        !            17: #include <string.h>
        !            18: #include <unistd.h>
        !            19: #include <getopt.h>
        !            20: 
        !            21: #include <cfgparse.h>
        !            22: 
        !            23: int verbose = 0;
        !            24: 
        !            25: #define dprintf(fmt, args...) if (verbose) printf(fmt, ##args)
        !            26: 
        !            27: static void
        !            28: print_usage(void)
        !            29: {
        !            30:        printf
        !            31:            ("Usage: build_romfs [-?] [--help] [-s|--romfs-size <romfs_size>]\n"
        !            32:             "\t[-p|--smart-pad] [-n|--notime] <config-file> <output-file>\n");
        !            33: }
        !            34: 
        !            35: unsigned long
        !            36: str_to_num(const char *str)
        !            37: {
        !            38:        char *s = (char *) str;
        !            39:        unsigned long num = strtoul(s, &s, 0);
        !            40:        if (s) {
        !            41:                if (s[0] == 'K')
        !            42:                        num <<= 10;
        !            43:                if (s[0] == 'M')
        !            44:                        num <<= 20;
        !            45:        }
        !            46:        return num;
        !            47: }
        !            48: 
        !            49: /*
        !            50:  * NOTE: We should consider to install an exit handler which does the
        !            51:  * unlink() of the output file. In case of error we just do exit() and
        !            52:  * forget about all the clumsy error handling free/close code, which
        !            53:  * blows up the code significantly and makes it hard to read.
        !            54:  */
        !            55: int
        !            56: main(int argc, char *argv[])
        !            57: {
        !            58:        int conf_file, rc;
        !            59:        struct ffs_chain_t ffs_chain;
        !            60:        int c;
        !            61:        int smart_pad = 0;      /* default */
        !            62:        int notime = 0;
        !            63:        const char *config_file = "boot_rom.ffs";
        !            64:        const char *output_file = "boot_rom.bin";
        !            65: 
        !            66:        memset((void *) &ffs_chain, 0, sizeof(struct ffs_chain_t));
        !            67: 
        !            68:        while (1) {
        !            69:                int option_index = 0;
        !            70:                static struct option long_options[] = {
        !            71:                        {"romfs-size", 1, 0, 's'},
        !            72:                        {"smart-pad", 0, 0, 'p'},
        !            73:                        {"notime", 0, 0, 'n'},
        !            74:                        {"verbose", 0, 0, 'v'},
        !            75:                        {"help", 1, 0, 'h'},
        !            76:                        {0, 0, 0, 0}
        !            77:                };
        !            78:                c = getopt_long(argc, argv, "s:ph?nv", long_options,
        !            79:                                &option_index);
        !            80:                if (c == -1)
        !            81:                        break;
        !            82: 
        !            83:                switch (c) {
        !            84:                case 's':
        !            85:                        ffs_chain.romfs_size = str_to_num(optarg);
        !            86:                        break;
        !            87:                case 'p':
        !            88:                        smart_pad = 1;
        !            89:                        break;
        !            90:                case 'n':
        !            91:                        notime = 1;
        !            92:                        break;
        !            93:                case 'v':
        !            94:                        verbose = 1;
        !            95:                        break;
        !            96:                case '?':
        !            97:                case 'h':
        !            98:                        print_usage();
        !            99:                        return EXIT_SUCCESS;
        !           100:                default:
        !           101:                        printf("?? getopt returned character code 0%o ??\n", c);
        !           102:                }
        !           103:        }
        !           104: 
        !           105:        /* two files must always be specified: config-file and output-file */
        !           106:        if (optind + 2 != argc) {
        !           107:                print_usage();
        !           108:                return EXIT_FAILURE;
        !           109:        }
        !           110: 
        !           111:        config_file = argv[optind++];
        !           112:        output_file = argv[optind++];
        !           113: 
        !           114:        dprintf("ROMFS FILESYSTEM CREATION V0.3 (bad parser)\n"
        !           115:                "Build directory structure...\n"
        !           116:                "  smart padding %s, maximum romfs size %d bytes\n",
        !           117:                smart_pad ? "enabled" : "disabled", ffs_chain.romfs_size);
        !           118: 
        !           119:        conf_file = open(config_file, O_RDONLY);
        !           120:        if (0 >= conf_file) {
        !           121:                perror("load config file:");
        !           122:                return EXIT_FAILURE;
        !           123:        }
        !           124: 
        !           125:        rc = read_config(conf_file, &ffs_chain);
        !           126:        close(conf_file);
        !           127:        if (rc < 1) {
        !           128:                fprintf(stderr, "flash cannot be built due to config errors\n");
        !           129:                return EXIT_FAILURE;
        !           130:        }
        !           131: 
        !           132:        rc = EXIT_SUCCESS;
        !           133: 
        !           134:        if (verbose)
        !           135:                dump_fs_contents(&ffs_chain);
        !           136:        if (smart_pad)
        !           137:                /* FIXME: size is only verified during reorder */
        !           138:                rc = reorder_ffs_chain(&ffs_chain);
        !           139: 
        !           140:        if (rc == EXIT_FAILURE)
        !           141:                goto out;
        !           142: 
        !           143:        dprintf("Build ffs and write to image file...\n");
        !           144:        if (build_ffs(&ffs_chain, output_file, notime) != 0) {
        !           145:                fprintf(stderr, "build ffs failed\n");
        !           146:                rc = EXIT_FAILURE;
        !           147:        } else {
        !           148:                rc = EXIT_SUCCESS;
        !           149:        }
        !           150: 
        !           151:        /* Check if there are any duplicate entries in the image,
        !           152:           print warning if this is the case. */
        !           153:        find_duplicates(&ffs_chain);
        !           154:        free_chain_memory(&ffs_chain);
        !           155:        dprintf("\n");
        !           156: 
        !           157:       out:
        !           158:        /* If the build failed, remove the target image file */
        !           159:        if (rc == EXIT_FAILURE)
        !           160:                unlink(output_file);
        !           161: 
        !           162:        return rc;
        !           163: }

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