diff options
Diffstat (limited to 'tools/firmware-utils/src/bixutil.c')
| -rw-r--r-- | tools/firmware-utils/src/bixutil.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/tools/firmware-utils/src/bixutil.c b/tools/firmware-utils/src/bixutil.c new file mode 100644 index 000000000..6e7dcd479 --- /dev/null +++ b/tools/firmware-utils/src/bixutil.c @@ -0,0 +1,188 @@ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/mman.h> +#include <time.h> +#include <fcntl.h> +#include <errno.h> + +#define RTL_PRODUCT_MAGIC1 0x59a0e842 +#define SQUASH_MAGIC 0x73717368 +#define RTL_IMAGE_VERSION 1 +#define RTL_IMAGE_TYPE_RDIR 0xb162 +#define RTL_IMAGE_TYPE_BOOT 0xea43 +#define RTL_IMAGE_TYPE_RUN 0x8dc9 +#define RTL_IMAGE_TYPE_KFS 0xd92f +#define RTL_IMAGE_TYPE_CCFG 0x2a05 +#define RTL_IMAGE_TYPE_DCFG 0x6ce8 +#define RTL_IMAGE_TYPE_LOG 0xc371 + +#define ENDIAN_SWITCH32(x) (((x) >> 24) | \ + (((x) >> 8) & 0xFF00) | \ + (((x) << 8) & 0xFF0000) | \ + (((x) << 24) &0xFF000000)) +#define ENDIAN_SWITCH16(x) ((((x) >> 8) & 0xFF) | \ + (((x) << 8) & 0xFF00)) + + +struct image_header { + u_int32_t magic1; + u_int16_t type; + u_int8_t ver; + u_int8_t align1; + u_int16_t year; + u_int8_t mon; + u_int8_t day; + u_int8_t hour; + u_int8_t min; + u_int8_t sec; + u_int8_t align2; + u_int32_t len; + u_int16_t align3; + u_int8_t icsum; + u_int8_t hcsum; +}; + +void print_header(struct image_header *h) +{ + printf("Magic1: 0x%08x\n", ENDIAN_SWITCH32(h->magic1)); + printf("Type: 0x%04x\n", ENDIAN_SWITCH16(h->type)); + printf("Version: %d\n", h->ver); + printf("Built: %04d-%02d-%02d %02d:%02d:%02d\n", + ENDIAN_SWITCH16(h->year), h->mon, h->day, h->hour, + h->min, h->sec); + printf("Length: %ld\n", ENDIAN_SWITCH32(h->len)); + printf("Checksums: 0x%02x (header), 0x%02x (image)\n", + h->hcsum, h->icsum); +} + +void *do_mmap(char *filename, int size, int readonly) +{ + int fd; + int openflags = O_RDWR | O_CREAT | O_TRUNC; + int protflags = PROT_READ | PROT_WRITE; + void *ptr; + struct stat st; + + if (readonly) { + openflags = O_RDONLY; + protflags = PROT_READ; + } + + if (!size) { + if (!readonly) + goto failed; + if (stat(filename, &st) != 0) { + perror("stat failed"); + goto failed; + } + size = st.st_size; + } + + if (!size) + goto failed; + + if ((fd = open(filename, openflags, 0644)) == -1) { + perror("open failed"); + goto failed; + } + + if (!readonly) + ftruncate(fd, size); + + ptr = mmap(0, size, protflags, MAP_SHARED, fd, 0); + if (ptr == MAP_FAILED) { + perror("mmap failed"); + goto mmap_failed; + } + + return ptr; + +mmap_failed: + close(fd); +failed: + return NULL; +} + +int write_image(char *kernel, char *outfile) +{ + unsigned char type; + unsigned long ksize, padded; + unsigned long i; + unsigned char ch, *src, *dst; + struct stat st; + struct image_header *h; + time_t tt; + struct tm *ut; + + tt = time(NULL); + ut = localtime(&tt); + + if (stat(kernel, &st) != 0) + error(-1, "stat %s failed", kernel); + ksize = st.st_size; + + padded = sizeof(struct image_header) + + ksize + ksize % 4; /* fs starts 32-bit aligned (?check) */ + + h = (struct image_header *)do_mmap(outfile, padded, 0); + if (!h) + return -1; + + memset(h, 0, sizeof(struct image_header)); + + dst = (unsigned char *)((unsigned)h + sizeof(struct image_header)); + src = (unsigned char *)do_mmap(kernel, ksize, 1); + if (!src) + return -1; + + for (i = 0; i < ksize; i++) { + dst[i] = src[i]; + h->icsum ^= src[i]; + } + + for (i = 0; i < ksize % 4; i++) + dst[ksize + i] = 0; + + munmap(src, ksize); + + h->magic1 = ENDIAN_SWITCH32(RTL_PRODUCT_MAGIC1); + h->type = ENDIAN_SWITCH16(RTL_IMAGE_TYPE_RUN); + h->ver = RTL_IMAGE_VERSION; + h->year = ENDIAN_SWITCH16(ut->tm_year + 1900); + h->mon = ut->tm_mon + 1; + h->day = ut->tm_mday; + h->hour = ut->tm_hour; + h->min = ut->tm_min; + h->sec = ut->tm_sec; + h->len = ENDIAN_SWITCH32(padded - sizeof(struct image_header)); + + for (i = 0; i < (sizeof(struct image_header) - 1); i++) + h->hcsum ^= ((unsigned char *)&h)[i]; + munmap(h, padded); + return 0; +} + +void usage(void) +{ + exit(1); +} + +int main(int argc, char *argv[]) +{ + if (argc < 3) usage(); + + printf("%d\n", sizeof(struct image_header)); + if (!strncmp(argv[1], "info", 4)) { + print_header((struct image_header *)do_mmap(argv[2], + 0, 1)); + } else if (!strncmp(argv[1], "pack", 4)) { + write_image(argv[2], argv[3]); + } else { + usage(); + } + + return 0; +} |