Hung-Te Lin (hun...@chromium.org) just uploaded a new patch set to gerrit, 
which you can find at http://review.coreboot.org/2195

-gerrit

commit c8067acc043532f7f374ebb74ea934146f29a5de
Author: Hung-Te Lin <hun...@chromium.org>
Date:   Mon Jan 28 14:23:49 2013 +0800

    cbfstool: Store global variables into struct.
    
    cbfstool.c uses lots of global variables for command line options and all 
named
    as "rom*". This may be confusing when other global variables also start with
    rom, ex:    int size = rom_size + romsize;
    (rom_size is from command line and romsize is the size of last loaded ROM 
image).
    
    If we pack all rom_* into a struct it may be more clear, ex:
        do_something(param.cbfs_name, param.size, &romsize);
    
    Change-Id: I5a298f4d67e712f90e998bcb70f2a68b8c0db6ac
    Signed-off-by: Hung-Te Lin <hun...@chromium.org>
---
 util/cbfstool/cbfstool.c | 219 ++++++++++++++++++++++++-----------------------
 1 file changed, 112 insertions(+), 107 deletions(-)

diff --git a/util/cbfstool/cbfstool.c b/util/cbfstool/cbfstool.c
index 4202801..824b40e 100644
--- a/util/cbfstool/cbfstool.c
+++ b/util/cbfstool/cbfstool.c
@@ -35,65 +35,70 @@ struct command {
 };
 
 int verbose = 0;
-static char *cbfs_name = NULL;
-static char *rom_name = NULL;
-static char *rom_filename = NULL;
-static char *rom_bootblock = NULL;
-static uint32_t rom_type = 0;
-static uint32_t rom_baseaddress = 0;
-static uint32_t rom_loadaddress = 0;
-static uint32_t rom_entrypoint = 0;
-static uint32_t rom_size = 0;
-static uint32_t rom_alignment = 0;
-static uint32_t rom_offset = 0;
-static comp_algo rom_algo = CBFS_COMPRESS_NONE;
+static struct param {
+       char *cbfs_name;
+       char *name;
+       char *filename;
+       char *bootblock;
+       uint32_t type;
+       uint32_t baseaddress;
+       uint32_t loadaddress;
+       uint32_t entrypoint;
+       uint32_t size;
+       uint32_t alignment;
+       uint32_t offset;
+       comp_algo algo;
+} param = {
+       /* All variables not listed are initialized as zero. */
+       .algo = CBFS_COMPRESS_NONE,
+};
 
 static int cbfs_add(void)
 {
        uint32_t filesize = 0;
        void *rom, *filedata, *cbfsfile;
 
-       if (!rom_filename) {
+       if (!param.filename) {
                fprintf(stderr, "E: You need to specify -f/--filename.\n");
                return 1;
        }
 
-       if (!rom_name) {
+       if (!param.name) {
                fprintf(stderr, "E: You need to specify -n/--name.\n");
                return 1;
        }
 
-       if (rom_type == 0) {
+       if (param.type == 0) {
                fprintf(stderr, "E: You need to specify a valid -t/--type.\n");
                return 1;
        }
 
-       rom = loadrom(cbfs_name);
+       rom = loadrom(param.cbfs_name);
        if (rom == NULL) {
                fprintf(stderr, "E: Could not load ROM image '%s'.\n",
-                       cbfs_name);
+                       param.cbfs_name);
                return 1;
        }
 
-       filedata = loadfile(rom_filename, &filesize, 0, SEEK_SET);
+       filedata = loadfile(param.filename, &filesize, 0, SEEK_SET);
        if (filedata == NULL) {
                fprintf(stderr, "E: Could not load file '%s'.\n",
-                       rom_filename);
+                       param.filename);
                free(rom);
                return 1;
        }
 
-       cbfsfile = create_cbfs_file(rom_name, filedata, &filesize,
-                                       rom_type, &rom_baseaddress);
+       cbfsfile = create_cbfs_file(param.name, filedata, &filesize,
+                                       param.type, &param.baseaddress);
        free(filedata);
 
-       if (add_file_to_cbfs(cbfsfile, filesize, rom_baseaddress)) {
-               fprintf(stderr, "E: Adding file '%s' failed.\n", rom_filename);
+       if (add_file_to_cbfs(cbfsfile, filesize, param.baseaddress)) {
+               fprintf(stderr, "E: Adding file '%s' failed.\n", 
param.filename);
                free(cbfsfile);
                free(rom);
                return 1;
        }
-       if (writerom(cbfs_name, rom, romsize)) {
+       if (writerom(param.cbfs_name, rom, romsize)) {
                free(cbfsfile);
                free(rom);
                return 1;
@@ -106,58 +111,58 @@ static int cbfs_add(void)
 
 static int cbfs_add_payload(void)
 {
-       int32_t filesize = 0;
+       uint32_t filesize = 0;
        void *rom, *filedata, *cbfsfile;
        unsigned char *payload;
 
-       if (!rom_filename) {
+       if (!param.filename) {
                fprintf(stderr, "E: You need to specify -f/--filename.\n");
                return 1;
        }
 
-       if (!rom_name) {
+       if (!param.name) {
                fprintf(stderr, "E: You need to specify -n/--name.\n");
                return 1;
        }
 
-       rom = loadrom(cbfs_name);
+       rom = loadrom(param.cbfs_name);
        if (rom == NULL) {
                fprintf(stderr, "E: Could not load ROM image '%s'.\n",
-                       cbfs_name);
+                       param.cbfs_name);
                return 1;
        }
 
-       filedata = loadfile(rom_filename, &filesize, 0, SEEK_SET);
+       filedata = loadfile(param.filename, &filesize, 0, SEEK_SET);
        if (filedata == NULL) {
                fprintf(stderr, "E: Could not load file '%s'.\n",
-                       rom_filename);
+                       param.filename);
                free(rom);
                return 1;
        }
 
-       filesize = parse_elf_to_payload(filedata, &payload, rom_algo);
+       filesize = parse_elf_to_payload(filedata, &payload, param.algo);
        if (filesize <= 0) {
                fprintf(stderr, "E: Adding payload '%s' failed.\n",
-                       rom_filename);
+                       param.filename);
                free(rom);
                return 1;
        }
 
-       cbfsfile = create_cbfs_file(rom_name, payload, &filesize,
-                               CBFS_COMPONENT_PAYLOAD, &rom_baseaddress);
+       cbfsfile = create_cbfs_file(param.name, payload, &filesize,
+                               CBFS_COMPONENT_PAYLOAD, &param.baseaddress);
 
        free(filedata);
        free(payload);
 
-       if (add_file_to_cbfs(cbfsfile, filesize, rom_baseaddress)) {
+       if (add_file_to_cbfs(cbfsfile, filesize, param.baseaddress)) {
                fprintf(stderr, "E: Adding payload '%s' failed.\n",
-                       rom_filename);
+                       param.filename);
                free(cbfsfile);
                free(rom);
                return 1;
        }
 
-       if (writerom(cbfs_name, rom, romsize)) {
+       if (writerom(param.cbfs_name, rom, romsize)) {
                free(cbfsfile);
                free(rom);
                return 1;
@@ -174,48 +179,48 @@ static int cbfs_add_stage(void)
        void *rom, *filedata, *cbfsfile;
        unsigned char *stage;
 
-       if (!rom_filename) {
+       if (!param.filename) {
                fprintf(stderr, "E: You need to specify -f/--filename.\n");
                return 1;
        }
 
-       if (!rom_name) {
+       if (!param.name) {
                fprintf(stderr, "E: You need to specify -n/--name.\n");
                return 1;
        }
 
-       rom = loadrom(cbfs_name);
+       rom = loadrom(param.cbfs_name);
        if (rom == NULL) {
                fprintf(stderr, "E: Could not load ROM image '%s'.\n",
-                       cbfs_name);
+                       param.cbfs_name);
                return 1;
        }
 
-       filedata = loadfile(rom_filename, &filesize, 0, SEEK_SET);
+       filedata = loadfile(param.filename, &filesize, 0, SEEK_SET);
        if (filedata == NULL) {
                fprintf(stderr, "E: Could not load file '%s'.\n",
-                       rom_filename);
+                       param.filename);
                free(rom);
                return 1;
        }
 
-       filesize = parse_elf_to_stage(filedata, &stage, rom_algo, 
&rom_baseaddress);
+       filesize = parse_elf_to_stage(filedata, &stage, param.algo, 
&param.baseaddress);
 
-       cbfsfile = create_cbfs_file(rom_name, stage, &filesize,
-                               CBFS_COMPONENT_STAGE, &rom_baseaddress);
+       cbfsfile = create_cbfs_file(param.name, stage, &filesize,
+                               CBFS_COMPONENT_STAGE, &param.baseaddress);
 
        free(filedata);
        free(stage);
 
-       if (add_file_to_cbfs(cbfsfile, filesize, rom_baseaddress)) {
+       if (add_file_to_cbfs(cbfsfile, filesize, param.baseaddress)) {
                fprintf(stderr, "E: Adding stage '%s' failed.\n",
-                       rom_filename);
+                       param.filename);
                free(cbfsfile);
                free(rom);
                return 1;
        }
 
-       if (writerom(cbfs_name, rom, romsize)) {
+       if (writerom(param.cbfs_name, rom, romsize)) {
                free(cbfsfile);
                free(rom);
                return 1;
@@ -236,43 +241,43 @@ static int cbfs_add_flat_binary(void)
        struct cbfs_payload_segment *segs;
        int doffset, len = 0;
 
-       if (!rom_filename) {
+       if (!param.filename) {
                fprintf(stderr, "E: You need to specify -f/--filename.\n");
                return 1;
        }
 
-       if (!rom_name) {
+       if (!param.name) {
                fprintf(stderr, "E: You need to specify -n/--name.\n");
                return 1;
        }
 
-       if (rom_loadaddress == 0) {
+       if (param.loadaddress == 0) {
                fprintf(stderr, "E: You need to specify a valid "
                        "-l/--load-address.\n");
                return 1;
        }
 
-       if (rom_entrypoint == 0) {
+       if (param.entrypoint == 0) {
                fprintf(stderr, "E: You need to specify a valid "
                        "-e/--entry-point.\n");
                return 1;
        }
 
-       compress = compression_function(rom_algo);
+       compress = compression_function(param.algo);
        if (!compress)
                return 1;
 
-       rom = loadrom(cbfs_name);
+       rom = loadrom(param.cbfs_name);
        if (rom == NULL) {
                fprintf(stderr, "E: Could not load ROM image '%s'.\n",
-                       cbfs_name);
+                       param.cbfs_name);
                return 1;
        }
 
-       filedata = loadfile(rom_filename, &filesize, 0, SEEK_SET);
+       filedata = loadfile(param.filename, &filesize, 0, SEEK_SET);
        if (filedata == NULL) {
                fprintf(stderr, "E: Could not load file '%s'.\n",
-                       rom_filename);
+                       param.filename);
                free(rom);
                return 1;
        }
@@ -291,12 +296,12 @@ static int cbfs_add_flat_binary(void)
 
        /* Prepare code segment */
        segs[0].type = PAYLOAD_SEGMENT_CODE;
-       segs[0].load_addr = (uint64_t)htonll(rom_loadaddress);
+       segs[0].load_addr = (uint64_t)htonll(param.loadaddress);
        segs[0].mem_len = (uint32_t)htonl(filesize);
        segs[0].offset = (uint32_t)htonl(doffset);
 
        compress(filedata, filesize, (char *)(payload + doffset), &len);
-       segs[0].compression = htonl(rom_algo);
+       segs[0].compression = htonl(param.algo);
        segs[0].len = htonl(len);
 
        if ((unsigned int)len >= filesize) {
@@ -307,24 +312,24 @@ static int cbfs_add_flat_binary(void)
 
        /* prepare entry point segment */
        segs[1].type = PAYLOAD_SEGMENT_ENTRY;
-       segs[1].load_addr = (uint64_t)htonll(rom_entrypoint);
+       segs[1].load_addr = (uint64_t)htonll(param.entrypoint);
 
        final_size = doffset + ntohl(segs[0].len);
        cbfsfile =
-           create_cbfs_file(rom_name, payload, &final_size,
-                            CBFS_COMPONENT_PAYLOAD, &rom_baseaddress);
+           create_cbfs_file(param.name, payload, &final_size,
+                            CBFS_COMPONENT_PAYLOAD, &param.baseaddress);
 
        free(filedata);
        free(payload);
 
-       if (add_file_to_cbfs(cbfsfile, final_size, rom_baseaddress)) {
+       if (add_file_to_cbfs(cbfsfile, final_size, param.baseaddress)) {
                fprintf(stderr, "E: Adding payload '%s' failed.\n",
-                       rom_filename);
+                       param.filename);
                free(cbfsfile);
                free(rom);
                return 1;
        }
-       if (writerom(cbfs_name, rom, romsize)) {
+       if (writerom(param.cbfs_name, rom, romsize)) {
                free(cbfsfile);
                free(rom);
                return 1;
@@ -339,26 +344,26 @@ static int cbfs_remove(void)
 {
        void *rom;
 
-       if (!rom_name) {
+       if (!param.name) {
                fprintf(stderr, "E: You need to specify -n/--name.\n");
                return 1;
        }
 
-       rom = loadrom(cbfs_name);
+       rom = loadrom(param.cbfs_name);
        if (rom == NULL) {
                fprintf(stderr, "E: Could not load ROM image '%s'.\n",
-                       cbfs_name);
+                       param.cbfs_name);
                return 1;
        }
 
-       if (remove_file_from_cbfs(rom_name)) {
+       if (remove_file_from_cbfs(param.name)) {
                fprintf(stderr, "E: Removing file '%s' failed.\n",
-                       rom_name);
+                       param.name);
                free(rom);
                return 1;
        }
 
-       if (writerom(cbfs_name, rom, romsize)) {
+       if (writerom(param.cbfs_name, rom, romsize)) {
                free(rom);
                return 1;
        }
@@ -369,12 +374,12 @@ static int cbfs_remove(void)
 
 static int cbfs_create(void)
 {
-       if (rom_size == 0) {
+       if (param.size == 0) {
                fprintf(stderr, "E: You need to specify a valid -s/--size.\n");
                return 1;
        }
 
-       if (!rom_bootblock) {
+       if (!param.bootblock) {
                fprintf(stderr, "E: You need to specify -b/--bootblock.\n");
                return 1;
        }
@@ -384,28 +389,28 @@ static int cbfs_create(void)
                return 1;
        }
 
-       return create_cbfs_image(cbfs_name, rom_size, rom_bootblock,
-                                               rom_alignment, rom_offset);
+       return create_cbfs_image(param.cbfs_name, param.size, param.bootblock,
+                                               param.alignment, param.offset);
 }
 
 static int cbfs_locate(void)
 {
        uint32_t filesize, location;
 
-       if (!rom_filename) {
+       if (!param.filename) {
                fprintf(stderr, "E: You need to specify -f/--filename.\n");
                return 1;
        }
 
-       if (!rom_name) {
+       if (!param.name) {
                fprintf(stderr, "E: You need to specify -n/--name.\n");
                return 1;
        }
 
-       filesize = getfilesize(rom_filename);
+       filesize = getfilesize(param.filename);
 
-       location = cbfs_find_location(cbfs_name, filesize,
-                                       rom_name, rom_alignment);
+       location = cbfs_find_location(param.cbfs_name, filesize,
+                                       param.name, param.alignment);
 
        printf("%x\n", location);
        return location == 0 ? 1 : 0;
@@ -415,14 +420,14 @@ static int cbfs_print(void)
 {
        void *rom;
 
-       rom = loadrom(cbfs_name);
+       rom = loadrom(param.cbfs_name);
        if (rom == NULL) {
                fprintf(stderr, "E: Could not load ROM image '%s'.\n",
-                       cbfs_name);
+                       param.cbfs_name);
                return 1;
        }
 
-       print_cbfs_directory(cbfs_name);
+       print_cbfs_directory(param.cbfs_name);
 
        free(rom);
        return 0;
@@ -433,24 +438,24 @@ static int cbfs_extract(void)
        void *rom;
        int ret;
 
-       if (!rom_filename) {
+       if (!param.filename) {
                fprintf(stderr, "E: You need to specify -f/--filename.\n");
                return 1;
        }
 
-       if (!rom_name) {
+       if (!param.name) {
                fprintf(stderr, "E: You need to specify -n/--name.\n");
                return 1;
        }
 
-       rom = loadrom(cbfs_name);
+       rom = loadrom(param.cbfs_name);
        if (rom == NULL) {
                fprintf(stderr, "E: Could not load ROM image '%s'.\n",
-                       cbfs_name);
+                       param.cbfs_name);
                return 1;
        }
 
-       ret = extract_file_from_cbfs(cbfs_name, rom_name, rom_filename);
+       ret = extract_file_from_cbfs(param.cbfs_name, param.name, 
param.filename);
 
        free(rom);
        return ret;
@@ -545,7 +550,7 @@ int main(int argc, char **argv)
 
        which_endian();
 
-       cbfs_name = argv[1];
+       param.cbfs_name = argv[1];
        char *cmd = argv[2];
        optind += 2;
 
@@ -572,55 +577,55 @@ int main(int argc, char **argv)
 
                        switch(c) {
                        case 'n':
-                               rom_name = optarg;
+                               param.name = optarg;
                                break;
                        case 't':
                                if (intfiletype(optarg) != ((uint64_t) - 1))
-                                       rom_type = intfiletype(optarg);
+                                       param.type = intfiletype(optarg);
                                else
-                                       rom_type = strtoul(optarg, NULL, 0);
-                               if (rom_type == 0)
+                                       param.type = strtoul(optarg, NULL, 0);
+                               if (param.type == 0)
                                        printf("W: Unknown type '%s' ignored\n",
                                                        optarg);
                                break;
                        case 'c':
                                if (!strncasecmp(optarg, "lzma", 5))
-                                       rom_algo = CBFS_COMPRESS_LZMA;
+                                       param.algo = CBFS_COMPRESS_LZMA;
                                else if (!strncasecmp(optarg, "none", 5))
-                                       rom_algo = CBFS_COMPRESS_NONE;
+                                       param.algo = CBFS_COMPRESS_NONE;
                                else
                                        printf("W: Unknown compression '%s'"
                                                        " ignored.\n", optarg);
                                break;
                        case 'b':
-                               rom_baseaddress = strtoul(optarg, NULL, 0);
+                               param.baseaddress = strtoul(optarg, NULL, 0);
                                break;
                        case 'l':
-                               rom_loadaddress = strtoul(optarg, NULL, 0);
+                               param.loadaddress = strtoul(optarg, NULL, 0);
 
                                break;
                        case 'e':
-                               rom_entrypoint = strtoul(optarg, NULL, 0);
+                               param.entrypoint = strtoul(optarg, NULL, 0);
                                break;
                        case 's':
-                               rom_size = strtoul(optarg, &suffix, 0);
+                               param.size = strtoul(optarg, &suffix, 0);
                                if (tolower(suffix[0])=='k') {
-                                       rom_size *= 1024;
+                                       param.size *= 1024;
                                }
                                if (tolower(suffix[0])=='m') {
-                                       rom_size *= 1024 * 1024;
+                                       param.size *= 1024 * 1024;
                                }
                        case 'B':
-                               rom_bootblock = optarg;
+                               param.bootblock = optarg;
                                break;
                        case 'a':
-                               rom_alignment = strtoul(optarg, NULL, 0);
+                               param.alignment = strtoul(optarg, NULL, 0);
                                break;
                        case 'o':
-                               rom_offset = strtoul(optarg, NULL, 0);
+                               param.offset = strtoul(optarg, NULL, 0);
                                break;
                        case 'f':
-                               rom_filename = optarg;
+                               param.filename = optarg;
                                break;
                        case 'v':
                                verbose++;

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