diff options
| -rw-r--r-- | util/cbfstool/cbfstool.c | 23 | ||||
| -rw-r--r-- | util/cbfstool/common.c | 65 | ||||
| -rw-r--r-- | util/cbfstool/common.h | 4 |
3 files changed, 90 insertions, 2 deletions
diff --git a/util/cbfstool/cbfstool.c b/util/cbfstool/cbfstool.c index bf8b3812b8..d8f2ac1bb3 100644 --- a/util/cbfstool/cbfstool.c +++ b/util/cbfstool/cbfstool.c @@ -28,6 +28,7 @@ typedef enum { CMD_ADD_PAYLOAD, CMD_ADD_STAGE, CMD_CREATE, + CMD_LOCATE, CMD_PRINT } cmd_t; @@ -78,8 +79,7 @@ static int cbfs_add(int argc, char **argv) if (argc > 6) { base = strtoul(argv[6], NULL, 0); } - cbfsfile = - create_cbfs_file(cbfsname, filedata, &filesize, type, &base); + cbfsfile = create_cbfs_file(cbfsname, filedata, &filesize, type, &base); if (add_file_to_cbfs(cbfsfile, filesize, base)) return 1; writerom(romname, rom, romsize); @@ -203,6 +203,23 @@ static int cbfs_create(int argc, char **argv) return create_cbfs_image(romname, size, bootblock, align); } +static int cbfs_locate(int argc, char **argv) +{ + char *romname = argv[1]; + if (argc < 6) { + printf("not enough arguments to 'locate'.\n"); + return 1; + } + + const char *file = argv[3]; + uint32_t filesize = getfilesize(file); + const char *filename = argv[4]; + int align = strtoul(argv[5], NULL, 0); + + printf("%x\n", cbfs_find_location(romname, filesize, filename, align)); + return 0; +} + static int cbfs_print(int argc, char **argv) { char *romname = argv[1]; @@ -223,6 +240,7 @@ struct command commands[] = { {CMD_ADD_PAYLOAD, "add-payload", cbfs_add_payload}, {CMD_ADD_STAGE, "add-stage", cbfs_add_stage}, {CMD_CREATE, "create", cbfs_create}, + {CMD_LOCATE, "locate", cbfs_locate}, {CMD_PRINT, "print", cbfs_print} }; @@ -238,6 +256,7 @@ void usage(void) "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" "create SIZE BSIZE 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 4c453995ed..1f69fa37f5 100644 --- a/util/cbfstool/common.c +++ b/util/cbfstool/common.c @@ -27,6 +27,16 @@ #define dprintf +uint32_t getfilesize(const char *filename) +{ + uint32_t size; + FILE *file = fopen(filename, "rb"); + 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) { @@ -323,3 +333,58 @@ int create_cbfs_image(const char *romfile, uint32_t _romsize, writerom(romfile, romarea, romsize); return 0; } + +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 = loadrom(romfile); + int filename_size = strlen(filename); + + int headersize = + sizeof(struct cbfs_file) + ALIGN(filename_size + 1, + 16) + sizeof(struct cbfs_stage); + int totalsize = headersize + filesize; + + 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 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)) + return current + headersize; + if ((ALIGN(current, alignment) + filesize < top) + && (ALIGN(current, alignment) - headersize > + current) + && in_segment(ALIGN(current, alignment), filesize, + alignment)) + return ALIGN(current, alignment); + if ((ALIGN(current, alignment) + alignment + filesize < + top) + && (ALIGN(current, alignment) + alignment - + headersize > current) + && in_segment(ALIGN(current, alignment) + alignment, + filesize, alignment)) + return ALIGN(current, alignment) + alignment; + } + current = + ALIGN(current + ntohl(thisfile->len) + + ntohl(thisfile->offset), align); + } + return 0; +} diff --git a/util/cbfstool/common.h b/util/cbfstool/common.h index a41eb8a439..ede06e5340 100644 --- a/util/cbfstool/common.h +++ b/util/cbfstool/common.h @@ -34,6 +34,7 @@ static uint32_t virt_to_phys(void *addr) #define ALIGN(val, by) (((val) + (by)-1)&~((by)-1)) +uint32_t getfilesize(const char *filename); void *loadfile(const char *filename, uint32_t * romsize_p, void *content, int place); void *loadrom(const char *filename); @@ -62,4 +63,7 @@ int create_cbfs_image(const char *romfile, uint32_t romsize, int add_file_to_cbfs(void *content, uint32_t contentsize, uint32_t location); void print_cbfs_directory(const char *filename); +uint32_t cbfs_find_location(const char *romfile, uint32_t filesize, + const char *filename, uint32_t align); + #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) |