diff options
| -rw-r--r-- | util/cbfstool/cbfstool.h | 1 | ||||
| -rw-r--r-- | util/cbfstool/util.c | 10 |
2 files changed, 11 insertions, 0 deletions
diff --git a/util/cbfstool/cbfstool.h b/util/cbfstool/cbfstool.h index dc52bfb16b..5804fdef50 100644 --- a/util/cbfstool/cbfstool.h +++ b/util/cbfstool/cbfstool.h @@ -56,6 +56,7 @@ struct rom { /* Function prototypes */ /* util.c */ +void flashinit(void *ptr, size_t len); int open_rom(struct rom *rom, const char *filename); int create_rom(struct rom *rom, const unsigned char *filename, int size, const char *bootblockname, int bootblocksize, diff --git a/util/cbfstool/util.c b/util/cbfstool/util.c index b36e9187a0..f0c0b293cf 100644 --- a/util/cbfstool/util.c +++ b/util/cbfstool/util.c @@ -25,6 +25,13 @@ #include <sys/mman.h> #include "cbfstool.h" +int uninitialized_flash_value = 0xff; + +void flashinit(void *ptr, size_t len) +{ + memset(ptr, uninitialized_flash_value, len); +} + int get_size(const char *size) { char *next; @@ -203,6 +210,9 @@ int create_rom(struct rom *rom, const unsigned char *filename, return -1; } + /* mmap'ed pages are by default zero-filled. Fix that. */ + flashinit(rom->ptr, romsize); + /* This is a pointer to the header for easy access */ rom->header = (struct cbfs_header *) ROM_PTR(rom, rom->size - 16 - bootblocksize - sizeof(struct cbfs_header)); |