diff options
| -rw-r--r-- | util/cbfstool/cbfstool.c | 30 | ||||
| -rw-r--r-- | util/cbfstool/common.c | 56 |
2 files changed, 86 insertions, 0 deletions
diff --git a/util/cbfstool/cbfstool.c b/util/cbfstool/cbfstool.c index 939221e66d..9dbdc1c11a 100644 --- a/util/cbfstool/cbfstool.c +++ b/util/cbfstool/cbfstool.c @@ -29,6 +29,7 @@ typedef enum { CMD_ADD, CMD_ADD_PAYLOAD, CMD_ADD_STAGE, + CMD_REMOVE, CMD_CREATE, CMD_LOCATE, CMD_PRINT, @@ -195,6 +196,33 @@ static int cbfs_add_stage(int argc, char **argv) return 0; } +static int cbfs_remove(int argc, char **argv) +{ + char *romname = argv[1]; + char *cmd = argv[2]; + void *rom = loadrom(romname); + + if (rom == NULL) { + printf("Could not load ROM image '%s'.\n", romname); + return 1; + } + + if (argc < 4) { + printf("not enough arguments to '%s'.\n", cmd); + return 1; + } + + char *cbfsname = argv[3]; + + if (remove_file_from_cbfs(cbfsname)) { + printf("Removing file '%s' failed.\n", cbfsname); + return 1; + } + if (writerom(romname, rom, romsize)) + return 1; + return 0; +} + static int cbfs_create(int argc, char **argv) { char *romname = argv[1]; @@ -275,6 +303,7 @@ static const struct command commands[] = { {CMD_ADD, "add", cbfs_add}, {CMD_ADD_PAYLOAD, "add-payload", cbfs_add_payload}, {CMD_ADD_STAGE, "add-stage", cbfs_add_stage}, + {CMD_REMOVE, "remove", cbfs_remove}, {CMD_CREATE, "create", cbfs_create}, {CMD_LOCATE, "locate", cbfs_locate}, {CMD_PRINT, "print", cbfs_print}, @@ -292,6 +321,7 @@ static void usage(void) " add FILE NAME TYPE [base address] Add a component\n" " add-payload FILE NAME [COMP] [base] Add a payload to the ROM\n" " add-stage FILE NAME [COMP] [base] Add a stage to the ROM\n" + " remove FILE NAME Remove a component\n" " create SIZE BOOTBLOCK [ALIGN] Create a ROM file\n" " locate FILE NAME ALIGN Find a place for a file of that size\n" " print Show the contents of the ROM\n" diff --git a/util/cbfstool/common.c b/util/cbfstool/common.c index df744217d4..49da7aea6c 100644 --- a/util/cbfstool/common.c +++ b/util/cbfstool/common.c @@ -350,6 +350,62 @@ int add_file_to_cbfs(void *content, uint32_t contentsize, uint32_t location) return 1; } + +static struct cbfs_file *merge_adjacent_files(struct cbfs_file *first, + struct cbfs_file *second) +{ + uint32_t new_length = + ntohl(first->len) + ntohl(second->len) + ntohl(second->offset); + first->len = htonl(new_length); + first->checksum = 0; // FIXME? + return first; +} + +static struct cbfs_file *next_file(struct cbfs_file *prev) +{ + uint32_t pos = (prev == NULL) ? phys_start : + ALIGN(virt_to_phys(prev) + ntohl(prev->len) + ntohl(prev->offset), + align); + + for (; pos < phys_end; pos += align) { + if (cbfs_file_header(pos)) + return (struct cbfs_file *)phys_to_virt(pos); + } + return NULL; +} + + +int remove_file_from_cbfs(const char *filename) +{ + struct cbfs_file *prev = NULL; + struct cbfs_file *cur = next_file(prev); + struct cbfs_file *next = next_file(cur); + for (; cur; prev = cur, cur = next, next = next_file(next)) { + + /* Check if this is the file to remove. */ + char *name = (char *)cur + sizeof(*cur); + if (strcmp(name, filename)) + continue; + + /* Mark the file as free space and erase its name. */ + cur->type = CBFS_COMPONENT_NULL; + name[0] = '\0'; + + /* Merge it with the previous file if possible. */ + if (prev && prev->type == CBFS_COMPONENT_NULL) + cur = merge_adjacent_files(prev, cur); + + /* Merge it with the next file if possible. */ + if (next && next->type == CBFS_COMPONENT_NULL) + merge_adjacent_files(cur, next); + + return 0; + } + printf("CBFS file %s not found.\n", filename); + return 1; +} + + /* returns new data block with cbfs_file header, suitable to dump into the ROM. location returns the new location that points to the cbfs_file header */ void *create_cbfs_file(const char *filename, void *data, uint32_t * datasize, |