diff options
Diffstat (limited to 'tools/firmware-utils/src')
| -rw-r--r-- | tools/firmware-utils/src/lzma2eva.c | 114 |
1 files changed, 88 insertions, 26 deletions
diff --git a/tools/firmware-utils/src/lzma2eva.c b/tools/firmware-utils/src/lzma2eva.c index 0bc13fa4f..6424dde1d 100644 --- a/tools/firmware-utils/src/lzma2eva.c +++ b/tools/firmware-utils/src/lzma2eva.c @@ -22,11 +22,16 @@ #include <stdlib.h> #include <zlib.h> /* crc32 */ + +#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) + #define checksum_add32(csum, data) \ - csum += ((uint8_t *)&data)[0]; \ - csum += ((uint8_t *)&data)[1]; \ - csum += ((uint8_t *)&data)[2]; \ - csum += ((uint8_t *)&data)[3]; + do { \ + csum += (((data) >> 0) & 0x000000FF); \ + csum += (((data) >> 8) & 0x000000FF); \ + csum += (((data) >> 16) & 0x000000FF); \ + csum += (((data) >> 24) & 0x000000FF); \ + } while (0) void usage(void) @@ -42,10 +47,68 @@ pexit(const char *msg) exit(1); } +/* Read an 8bit value */ +static int fread_8(uint8_t *buf, FILE *fd) +{ + return (fread(buf, sizeof(*buf), 1, fd) == 1) ? 0 : -1; +} + +/* Read a 32bit little endian value and convert to host endianness. */ +static int fread_le32(uint32_t *buf, FILE *fd) +{ + size_t count; + uint8_t tmp[4]; + unsigned int i; + + if (fread(tmp, sizeof(tmp), 1, fd) != 1) + return -1; + *buf = 0; + for (i = 0; i < ARRAY_SIZE(tmp); i++) + *buf |= (uint32_t)(tmp[i]) << (i * 8); + + return 0; +} + +/* Read a 64bit little endian value and convert to host endianness. */ +static int fread_le64(uint64_t *buf, FILE *fd) +{ + size_t count; + uint8_t tmp[8]; + unsigned int i; + + if (fread(tmp, sizeof(tmp), 1, fd) != 1) + return -1; + *buf = 0; + for (i = 0; i < ARRAY_SIZE(tmp); i++) + *buf |= (uint64_t)(tmp[i]) << (i * 8); + + return 0; +} + +/* Write an 8bit value */ +static int fwrite_8(uint8_t buf, FILE *fd) +{ + return (fwrite(&buf, sizeof(buf), 1, fd) == 1) ? 0 : -1; +} + +/* Convert to little endian and write a 32bit value */ +static int fwrite_le32(uint32_t buf, FILE *fd) +{ + size_t count; + uint8_t tmp[4]; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(tmp); i++) + tmp[i] = buf >> (i * 8); + if (fwrite(tmp, sizeof(tmp), 1, fd) != 1) + return -1; + + return 0; +} + int main(int argc, char *argv[]) { - const char *infile, *outfile; FILE *in, *out; static const uint8_t buf[4096]; @@ -67,7 +130,6 @@ main(int argc, char *argv[]) uint32_t datasize32 = 0; uint32_t datacrc32 = crc32(0, 0, 0); - uint32_t zero = 0; uint32_t entry = 0; if (argc != 5) @@ -87,43 +149,43 @@ main(int argc, char *argv[]) pexit("fopen"); /* read LZMA header */ - if (1 != fread(&properties, sizeof properties, 1, in)) + if (fread_8(&properties, in)) pexit("fread"); - if (1 != fread(&dictsize, sizeof dictsize, 1, in)) + if (fread_le32(&dictsize, in)) pexit("fread"); - if (1 != fread(&datasize, sizeof datasize, 1, in)) + if (fread_le64(&datasize, in)) pexit("fread"); /* write EVA header */ - if (1 != fwrite(&magic, sizeof magic, 1, out)) + if (fwrite_le32(magic, out)) pexit("fwrite"); if (fgetpos(out, &reclengthpos)) pexit("fgetpos"); - if (1 != fwrite(&reclength, sizeof reclength, 1, out)) + if (fwrite_le32(reclength, out)) pexit("fwrite"); - if (1 != fwrite(&loadaddress, sizeof loadaddress, 1, out)) + if (fwrite_le32(loadaddress, out)) pexit("fwrite"); - if (1 != fwrite(&type, sizeof type, 1, out)) + if (fwrite_le32(type, out)) pexit("fwrite"); /* write EVA LZMA header */ if (fgetpos(out, &compsizepos)) pexit("fgetpos"); - if (1 != fwrite(&compsize, sizeof compsize, 1, out)) + if (fwrite_le32(compsize, out)) pexit("fwrite"); /* XXX check length */ datasize32 = (uint32_t)datasize; - if (1 != fwrite(&datasize32, sizeof datasize32, 1, out)) + if (fwrite_le32(datasize32, out)) pexit("fwrite"); - if (1 != fwrite(&datacrc32, sizeof datacrc32, 1, out)) + if (fwrite_le32(datacrc32, out)) pexit("fwrite"); /* write modified LZMA header */ - if (1 != fwrite(&properties, sizeof properties, 1, out)) + if (fwrite_8(properties, out)) pexit("fwrite"); - if (1 != fwrite(&dictsize, sizeof dictsize, 1, out)) + if (fwrite_le32(dictsize, out)) pexit("fwrite"); - if (1 != fwrite(&zero, 3, 1, out)) + if (fwrite_le32(0, out)) pexit("fwrite"); /* copy compressed data, calculate crc32 */ @@ -141,17 +203,17 @@ main(int argc, char *argv[]) reclength = compsize + 24; if (fsetpos(out, &reclengthpos)) pexit("fsetpos"); - if (1 != fwrite(&reclength, sizeof reclength, 1, out)) + if (fwrite_le32(reclength, out)) pexit("fwrite"); /* re-write EVA LZMA header including size and data crc */ if (fsetpos(out, &compsizepos)) pexit("fsetpos"); - if (1 != fwrite(&compsize, sizeof compsize, 1, out)) + if (fwrite_le32(compsize, out)) pexit("fwrite"); - if (1 != fwrite(&datasize32, sizeof datasize32, 1, out)) + if (fwrite_le32(datasize32, out)) pexit("fwrite"); - if (1 != fwrite(&datacrc32, sizeof datacrc32, 1, out)) + if (fwrite_le32(datacrc32, out)) pexit("fwrite"); /* calculate record checksum */ @@ -174,13 +236,13 @@ main(int argc, char *argv[]) pexit("fseek"); checksum = ~checksum + 1; - if (1 != fwrite(&checksum, sizeof checksum, 1, out)) + if (fwrite_le32(checksum, out)) pexit("fwrite"); /* write entry record */ - if (1 != fwrite(&zero, sizeof zero, 1, out)) + if (fwrite_le32(0, out)) pexit("fwrite"); - if (1 != fwrite(&entry, sizeof entry, 1, out)) + if (fwrite_le32(entry, out)) pexit("fwrite"); if (fclose(out)) |