diff options
Diffstat (limited to 'util/cbfstool')
| -rw-r--r-- | util/cbfstool/cbfs.h | 7 | ||||
| -rw-r--r-- | util/cbfstool/common.c | 578 | ||||
| -rw-r--r-- | util/cbfstool/common.h | 20 |
3 files changed, 1 insertions, 604 deletions
diff --git a/util/cbfstool/cbfs.h b/util/cbfstool/cbfs.h index 585a26d96c..92dd84ae84 100644 --- a/util/cbfstool/cbfs.h +++ b/util/cbfstool/cbfs.h @@ -119,7 +119,6 @@ struct cbfs_payload { */ #define CBFS_COMPONENT_NULL 0xFFFFFFFF -int cbfs_file_header(unsigned long physaddr); #define CBFS_NAME(_c) (((char *) (_c)) + sizeof(struct cbfs_file)) #define CBFS_SUBHEADER(_p) ( (void *) ((((uint8_t *) (_p)) + ntohl((_p)->offset))) ) /* cbfs_image.c */ @@ -127,12 +126,6 @@ uint32_t get_cbfs_entry_type(const char *name, uint32_t default_value); const char *get_cbfs_entry_type_name(uint32_t type); uint32_t get_cbfs_compression(const char *name, uint32_t unknown); -/* common.c */ -int find_master_header(void *romarea, size_t size); -void recalculate_rom_geometry(void *romarea); -struct cbfs_file *cbfs_create_empty_file(uint32_t physaddr, uint32_t size); -const char *strfiletype(uint32_t number); - /* elfheaders.c */ int elf_headers(const struct buffer *pinput, diff --git a/util/cbfstool/common.c b/util/cbfstool/common.c index 0aaeb13178..715c5df58e 100644 --- a/util/cbfstool/common.c +++ b/util/cbfstool/common.c @@ -103,66 +103,9 @@ void buffer_delete(struct buffer *buffer) { buffer->size = 0; } -size_t getfilesize(const char *filename) -{ - size_t size; - FILE *file = fopen(filename, "rb"); - if (file == NULL) - return -1; - - fseek(file, 0, SEEK_END); - size = ftell(file); - fclose(file); - return size; -} - -void *loadfile(const char *filename, uint32_t * romsize_p, void *content, - int place) -{ - FILE *file = fopen(filename, "rb"); - if (file == NULL) - return NULL; - - fseek(file, 0, SEEK_END); - *romsize_p = ftell(file); - fseek(file, 0, SEEK_SET); - if (!content) { - content = malloc(*romsize_p); - if (!content) { - ERROR("Could not get %d bytes for file %s\n", - *romsize_p, filename); - exit(1); - } - } else if (place == SEEK_END) - content -= *romsize_p; - - if (!fread(content, *romsize_p, 1, file)) { - ERROR("Failed to read %s\n", filename); - return NULL; - } - fclose(file); - return content; -} - -/* N.B.: there are declarations here that were shadowed in functions. - * Hence the rather clumsy cbfstool_ prefixes. - */ -static struct cbfs_header *cbfstool_master_header; -static uint32_t phys_start, phys_end, align; -uint32_t romsize; -static void *cbfstool_offset; +/* FIXME: This global is more difficult to just remove */ uint32_t arch = CBFS_ARCHITECTURE_UNKNOWN; -static inline void *phys_to_virt(uint32_t addr) -{ - return cbfstool_offset + addr; -} - -static inline uint32_t virt_to_phys(void *addr) -{ - return (unsigned long)(addr - cbfstool_offset) & 0xffffffff; -} - static struct { uint32_t arch; const char *name; @@ -187,124 +130,6 @@ uint32_t string_to_arch(const char *arch_string) return ret; } -const char *arch_to_string(uint32_t a) -{ - int i; - const char *ret = NULL; - - for (i = 0; i < ARRAY_SIZE(arch_names); i++) { - if (a == arch_names[i].arch) { - ret = arch_names[i].name; - break; - } - } - - return ret; - -} - -int find_master_header(void *romarea, size_t size) -{ - size_t offset; - - if (cbfstool_master_header) - return 0; - - for (offset = 0; offset < size - sizeof(struct cbfs_header); offset++) { - struct cbfs_header *tmp = romarea + offset; - - if (tmp->magic == ntohl(CBFS_HEADER_MAGIC)) { - cbfstool_master_header = tmp; - break; - } - } - - return cbfstool_master_header ? 0 : 1; -} - -void recalculate_rom_geometry(void *romarea) -{ - if (find_master_header(romarea, romsize)) { - ERROR("Cannot find master header\n"); - exit(1); - } - - /* Update old headers */ - if (cbfstool_master_header->version == CBFS_HEADER_VERSION1 && - ntohl(cbfstool_master_header->architecture) == CBFS_ARCHITECTURE_UNKNOWN) { - DEBUG("Updating CBFS master header to version 2\n"); - cbfstool_master_header->architecture = htonl(CBFS_ARCHITECTURE_X86); - } - - arch = ntohl(cbfstool_master_header->architecture); - - switch (arch) { - case CBFS_ARCHITECTURE_ARMV7: - cbfstool_offset = romarea; - phys_start = (0 + ntohl(cbfstool_master_header->offset)) & 0xffffffff; - phys_end = romsize & 0xffffffff; - break; - case CBFS_ARCHITECTURE_X86: - cbfstool_offset = romarea + romsize - 0x100000000ULL; - phys_start = (0 - romsize + ntohl(cbfstool_master_header->offset)) & - 0xffffffff; - phys_end = (0 - ntohl(cbfstool_master_header->bootblocksize) - - sizeof(struct cbfs_header)) & 0xffffffff; - break; - default: - ERROR("Unknown architecture\n"); - exit(1); - } - - align = ntohl(cbfstool_master_header->align); -} - -void *loadrom(const char *filename) -{ - void *romarea = loadfile(filename, &romsize, 0, SEEK_SET); - if (romarea == NULL) - return NULL; - recalculate_rom_geometry(romarea); - return romarea; -} - -int writerom(const char *filename, void *start, uint32_t size) -{ - FILE *file = fopen(filename, "wb"); - if (!file) { - ERROR("Could not open '%s' for writing: ", filename); - perror(""); - return 1; - } - - if (fwrite(start, size, 1, file) != 1) { - ERROR("Could not write to '%s': ", filename); - perror(""); - return 1; - } - - fclose(file); - return 0; -} - -int cbfs_file_header(unsigned long physaddr) -{ - /* maybe improve this test */ - return (strncmp(phys_to_virt(physaddr), "LARCHIVE", 8) == 0); -} - -struct cbfs_file *cbfs_create_empty_file(uint32_t physaddr, uint32_t size) -{ - struct cbfs_file *nextfile = (struct cbfs_file *)phys_to_virt(physaddr); - memcpy((char *)(nextfile->magic), "LARCHIVE", 8); - nextfile->len = htonl(size); - nextfile->type = htonl(0xffffffff); - nextfile->checksum = 0; // FIXME? - nextfile->offset = htonl(sizeof(struct cbfs_file) + 16); - memset(((void *)nextfile) + sizeof(struct cbfs_file), 0, 16); - return nextfile; -} - int iself(unsigned char *input) { Elf32_Ehdr *ehdr = (Elf32_Ehdr *) input; @@ -340,15 +165,6 @@ void print_supported_filetypes(void) } } -const char *strfiletype(uint32_t number) -{ - size_t i; - for (i = 0; i < (sizeof(filetypes) / sizeof(struct filetypes_t)); i++) - if (filetypes[i].type == number) - return filetypes[i].name; - return "unknown"; -} - uint64_t intfiletype(const char *name) { size_t i; @@ -357,395 +173,3 @@ uint64_t intfiletype(const char *name) return filetypes[i].type; return -1; } - -void print_cbfs_directory(const char *filename) -{ - char *name = strdup(filename); - printf - ("%s: %d kB, bootblocksize %d, romsize %d, offset 0x%x\n" - "alignment: %d bytes, architecture: %s\n\n", - basename(name), romsize / 1024, ntohl(cbfstool_master_header->bootblocksize), - romsize, ntohl(cbfstool_master_header->offset), align, arch_to_string(arch)); - free(name); - printf("%-30s %-10s %-12s Size\n", "Name", "Offset", "Type"); - uint32_t current = phys_start; - while (current < phys_end) { - if (!cbfs_file_header(current)) { - current += align; - continue; - } - struct cbfs_file *thisfile = - (struct cbfs_file *)phys_to_virt(current); - uint32_t length = ntohl(thisfile->len); - const char *fname = (char *)(phys_to_virt(current) + sizeof(struct cbfs_file)); - if (strlen(fname) == 0) - fname = "(empty)"; - - printf("%-30s 0x%-8x %-12s %d\n", fname, - current - phys_start + ntohl(cbfstool_master_header->offset), - strfiletype(ntohl(thisfile->type)), length); - - /* note the components of the subheader are in host order ... */ - switch (ntohl(thisfile->type)) { - case CBFS_COMPONENT_STAGE: - { - struct cbfs_stage *stage = CBFS_SUBHEADER(thisfile); - INFO(" %s compression, entry: 0x%llx, load: 0x%llx, length: %d/%d\n", - stage->compression == CBFS_COMPRESS_LZMA ? "LZMA" : "no", - (unsigned long long)stage->entry, - (unsigned long long)stage->load, - stage->len, - stage->memlen); - break; - } - case CBFS_COMPONENT_PAYLOAD: - { - struct cbfs_payload_segment *payload = CBFS_SUBHEADER(thisfile); - while(payload) { - switch(payload->type) { - case PAYLOAD_SEGMENT_CODE: - case PAYLOAD_SEGMENT_DATA: - INFO(" %s (%s compression, offset: 0x%x, load: 0x%llx, length: %d/%d)\n", - payload->type == PAYLOAD_SEGMENT_CODE ? "code " : "data" , - payload->compression == CBFS_COMPRESS_LZMA ? "LZMA" : "no", - ntohl(payload->offset), - (unsigned long long)ntohll(payload->load_addr), - ntohl(payload->len), ntohl(payload->mem_len)); - break; - case PAYLOAD_SEGMENT_ENTRY: - INFO(" entry (0x%llx)\n", (unsigned long long)ntohll(payload->load_addr)); - break; - case PAYLOAD_SEGMENT_BSS: - INFO(" BSS (address 0x%016llx, length 0x%x)\n", (unsigned long long)ntohll(payload->load_addr), ntohl(payload->len)); - break; - case PAYLOAD_SEGMENT_PARAMS: - INFO(" parameters\n"); - break; - default: - INFO(" %x (%s compression, offset: 0x%x, load: 0x%llx, length: %d/%d\n", - payload->type, - payload->compression == CBFS_COMPRESS_LZMA ? "LZMA" : "no", - ntohl(payload->offset), - (unsigned long long)ntohll(payload->load_addr), - ntohl(payload->len), - ntohl(payload->mem_len)); - break; - } - - if(payload->type == PAYLOAD_SEGMENT_ENTRY) - payload=NULL; - else - payload++; - } - break; - } - default: - break; - } - current = - ALIGN(current + ntohl(thisfile->len) + - ntohl(thisfile->offset), align); - } -} - -int extract_file_from_cbfs(const char *filename, const char *payloadname, const char *outpath) -{ - FILE *outfile = NULL; - uint32_t current = phys_start; - while (current < phys_end) { - if (!cbfs_file_header(current)) { - current += align; - continue; - } - - // Locate the file start struct - struct cbfs_file *thisfile = - (struct cbfs_file *)phys_to_virt(current); - // And its length - uint32_t length = ntohl(thisfile->len); - // Locate the file name - char *fname = (char *)(phys_to_virt(current) + sizeof(struct cbfs_file)); - - // It's not the file we are looking for.. - if (strcmp(fname, payloadname) != 0) - { - current = - ALIGN(current + ntohl(thisfile->len) + - ntohl(thisfile->offset), align); - continue; - } - - // Else, it's our file. - LOG("Found file %.30s at 0x%x, type %.12s, size %d\n", fname, - current - phys_start, strfiletype(ntohl(thisfile->type)), - length); - - // If we are not dumping to stdout, open the out file. - outfile = fopen(outpath, "wb"); - if (!outfile) - { - ERROR("Could not open the file %s for writing.\n", outpath); - return 1; - } - - if (ntohl(thisfile->type) != CBFS_COMPONENT_RAW) - { - WARN("Only 'raw' files are safe to extract.\n"); - } - - fwrite(((char *)thisfile) - + ntohl(thisfile->offset), length, 1, outfile); - - fclose(outfile); - LOG("Successfully dumped the file.\n"); - - // We'll only dump one file. - return 0; - } - ERROR("File %s not found.\n", payloadname); - return 1; -} - - -int add_file_to_cbfs(void *content, uint32_t contentsize, uint32_t location) -{ - uint32_t current = phys_start; - while (current < phys_end) { - if (!cbfs_file_header(current)) { - current += align; - continue; - } - struct cbfs_file *thisfile = - (struct cbfs_file *)phys_to_virt(current); - uint32_t length = ntohl(thisfile->len); - - DEBUG("at %x, %x bytes\n", current, length); - /* Is this a free chunk? */ - if ((thisfile->type == CBFS_COMPONENT_DELETED) - || (thisfile->type == CBFS_COMPONENT_NULL)) { - DEBUG("null||deleted at %x, %x bytes\n", current, - length); - /* if this is the right size, and if specified, the right location, use it */ - if ((contentsize <= length) - && ((location == 0) || (current == location))) { - if (contentsize < length) { - DEBUG("this chunk is %x bytes, we need %x. create a new chunk at %x with %x bytes\n", - length, contentsize, - ALIGN(current + contentsize, - align), - length - contentsize); - uint32_t start = - ALIGN(current + contentsize, align); - uint32_t size = - current + ntohl(thisfile->offset) - + length - start - 16 - - sizeof(struct cbfs_file); - cbfs_create_empty_file(start, size); - } - DEBUG("copying data\n"); - memcpy(phys_to_virt(current), content, - contentsize); - return 0; - } - if (location != 0) { - /* CBFS has the constraint that the chain always moves up in memory. so once - we're past the place we seek, we don't need to look any further */ - if (current > location) { - ERROR("The requested space is not available\n"); - return 1; - } - - /* Is the requested location inside the current chunk? */ - if ((current < location) - && ((location + contentsize) <= - (current + length))) { - /* Split it up. In the next iteration the code will be at the right place. */ - DEBUG("split up. new length: %x\n", - location - current - - ntohl(thisfile->offset)); - thisfile->len = - htonl(location - current - - ntohl(thisfile->offset)); - cbfs_create_empty_file(location, - length - - (location - - current)); - } - } - } - current = - ALIGN(current + ntohl(thisfile->len) + - ntohl(thisfile->offset), align); - } - ERROR("Could not add the file to CBFS, it's probably too big.\n"); - ERROR("File size: %d bytes (%d KB).\n", contentsize, contentsize/1024); - 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; - } - ERROR("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, - uint32_t type, uint32_t * location) -{ - uint32_t filename_len = ALIGN(strlen(filename) + 1, 16); - uint32_t headersize = sizeof(struct cbfs_file) + filename_len; - if ((location != 0) && (*location != 0)) { - uint32_t offset = *location % align; - /* If offset >= (headersize % align), we can stuff the header into the offset. - Otherwise the header has to be aligned itself, and put before the offset data */ - if (offset >= (headersize % align)) { - offset -= (headersize % align); - } else { - offset += align - (headersize % align); - } - headersize += offset; - *location -= headersize; - } - void *newdata = malloc(*datasize + headersize); - if (!newdata) { - ERROR("Could not get %d bytes for CBFS file.\n", *datasize + - headersize); - exit(1); - } - memset(newdata, 0xff, *datasize + headersize); - struct cbfs_file *nextfile = (struct cbfs_file *)newdata; - memcpy((char *)(nextfile->magic), "LARCHIVE", 8); - nextfile->len = htonl(*datasize); - nextfile->type = htonl(type); - nextfile->checksum = 0; // FIXME? - nextfile->offset = htonl(headersize); - strcpy(newdata + sizeof(struct cbfs_file), filename); - memcpy(newdata + headersize, data, *datasize); - *datasize += headersize; - return newdata; -} - -static int in_segment(int addr, int size, int gran) -{ - return ((addr & ~(gran - 1)) == ((addr + size) & ~(gran - 1))); -} - -uint32_t cbfs_find_location(const char *romfile, uint32_t filesize, - const char *filename, uint32_t alignment) -{ - void *rom; - size_t filename_size, headersize, totalsize; - int ret = 0; - uint32_t current; - - rom = loadrom(romfile); - if (rom == NULL) { - ERROR("Could not load ROM image '%s'.\n", romfile); - return 0; - } - - filename_size = strlen(filename); - headersize = sizeof(struct cbfs_file) + ALIGN(filename_size + 1, 16) + - sizeof(struct cbfs_stage); - totalsize = headersize + filesize; - - current = phys_start; - while (current < phys_end) { - uint32_t top; - struct cbfs_file *thisfile; - - if (!cbfs_file_header(current)) { - current += align; - continue; - } - - thisfile = (struct cbfs_file *)phys_to_virt(current); - - top = current + ntohl(thisfile->len) + ntohl(thisfile->offset); - - if (((ntohl(thisfile->type) == 0x0) - || (ntohl(thisfile->type) == 0xffffffff)) - && (ntohl(thisfile->len) + ntohl(thisfile->offset) >= - totalsize)) { - if (in_segment - (current + headersize, filesize, alignment)) { - ret = current + headersize; - break; - } - if ((ALIGN(current, alignment) + filesize < top) - && (ALIGN(current, alignment) - headersize > - current) - && in_segment(ALIGN(current, alignment), filesize, - alignment)) { - ret = ALIGN(current, alignment); - break; - } - if ((ALIGN(current, alignment) + alignment + filesize < - top) - && (ALIGN(current, alignment) + alignment - - headersize > current) - && in_segment(ALIGN(current, alignment) + alignment, - filesize, alignment)) { - ret = ALIGN(current, alignment) + alignment; - break; - } - } - current = - ALIGN(current + ntohl(thisfile->len) + - ntohl(thisfile->offset), align); - } - - free(rom); - return ret; -} diff --git a/util/cbfstool/common.h b/util/cbfstool/common.h index a50419b27b..b8ff4a3c7c 100644 --- a/util/cbfstool/common.h +++ b/util/cbfstool/common.h @@ -62,21 +62,12 @@ int buffer_write_file(struct buffer *buffer, const char *filename); /* Destroys a memory buffer. */ void buffer_delete(struct buffer *buffer); -extern uint32_t romsize; -extern int host_bigendian; extern uint32_t arch; -const char *arch_to_string(uint32_t a); uint32_t string_to_arch(const char *arch_string); #define ALIGN(val, by) (((val) + (by)-1)&~((by)-1)) -size_t getfilesize(const char *filename); -void *loadfile(const char *filename, uint32_t * romsize_p, void *content, - int place); -void *loadrom(const char *filename); -int writerom(const char *filename, void *start, uint32_t size); - int iself(unsigned char *input); typedef void (*comp_func_ptr) (char *, int, char *, int *); @@ -103,17 +94,6 @@ int parse_flat_binary_to_payload(const struct buffer *input, int parse_elf_to_stage(const struct buffer *input, struct buffer *output, comp_algo algo, uint32_t *location); -void *create_cbfs_file(const char *filename, void *data, uint32_t * datasize, - uint32_t type, uint32_t * location); - -int add_file_to_cbfs(void *content, uint32_t contentsize, uint32_t location); -int remove_file_from_cbfs(const char *filename); -void print_cbfs_directory(const char *filename); -int extract_file_from_cbfs(const char *filename, const char *payloadname, const char *outpath); - -uint32_t cbfs_find_location(const char *romfile, uint32_t filesize, - const char *filename, uint32_t align); - void print_supported_filetypes(void); #define ARRAY_SIZE(a) (int)(sizeof(a) / sizeof((a)[0])) |