diff options
| author | Lubomir Rintel <lkundrak@v3.sk> | 2013-02-10 01:02:36 +0000 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2013-03-11 17:05:04 -0400 |
| commit | f1932b78505aa52fc29e5862ed8588a6f1bbe3ec (patch) | |
| tree | a75378bbb248e35b49f15f2d0d8a46d3b2ffb304 /tools/env | |
| parent | c8b5f556c069fcb82e0c5289189dc31f4d5d62f1 (diff) | |
env: Allow accessing non-mtd devices
In certain cases, memory device is present as flat file or block device (via
mmc or mtdblock layer). Do not attempt MTD operations against it.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Diffstat (limited to 'tools/env')
| -rw-r--r-- | tools/env/fw_env.c | 34 | ||||
| -rw-r--r-- | tools/env/fw_env.config | 3 |
2 files changed, 27 insertions, 10 deletions
diff --git a/tools/env/fw_env.c b/tools/env/fw_env.c index 37b60b80a7..bf30234190 100644 --- a/tools/env/fw_env.c +++ b/tools/env/fw_env.c @@ -836,9 +836,9 @@ static int flash_write_buf (int dev, int fd, void *buf, size_t count, erase.start = blockstart; ioctl (fd, MEMUNLOCK, &erase); - - /* Dataflash does not need an explicit erase cycle */ - if (mtd_type != MTD_DATAFLASH) + /* These do not need an explicit erase cycle */ + if (mtd_type != MTD_ABSENT && + mtd_type != MTD_DATAFLASH) if (ioctl (fd, MEMERASE, &erase) != 0) { fprintf (stderr, "MTD erase error on %s: %s\n", DEVNAME (dev), @@ -949,19 +949,33 @@ static int flash_write (int fd_current, int fd_target, int dev_target) static int flash_read (int fd) { struct mtd_info_user mtdinfo; + struct stat st; int rc; - rc = ioctl (fd, MEMGETINFO, &mtdinfo); + rc = fstat(fd, &st); if (rc < 0) { - perror ("Cannot get MTD information"); + fprintf(stderr, "Cannot stat the file %s\n", + DEVNAME(dev_current)); return -1; } - if (mtdinfo.type != MTD_NORFLASH && - mtdinfo.type != MTD_NANDFLASH && - mtdinfo.type != MTD_DATAFLASH) { - fprintf (stderr, "Unsupported flash type %u\n", mtdinfo.type); - return -1; + if (S_ISCHR(st.st_mode)) { + rc = ioctl(fd, MEMGETINFO, &mtdinfo); + if (rc < 0) { + fprintf(stderr, "Cannot get MTD information for %s\n", + DEVNAME(dev_current)); + return -1; + } + if (mtdinfo.type != MTD_NORFLASH && + mtdinfo.type != MTD_NANDFLASH && + mtdinfo.type != MTD_DATAFLASH) { + fprintf (stderr, "Unsupported flash type %u on %s\n", + mtdinfo.type, DEVNAME(dev_current)); + return -1; + } + } else { + memset(&mtdinfo, 0, sizeof(mtdinfo)); + mtdinfo.type = MTD_ABSENT; } DEVTYPE(dev_current) = mtdinfo.type; diff --git a/tools/env/fw_env.config b/tools/env/fw_env.config index 9d3b1a4692..90e499da1e 100644 --- a/tools/env/fw_env.config +++ b/tools/env/fw_env.config @@ -17,3 +17,6 @@ # NAND example #/dev/mtd0 0x4000 0x4000 0x20000 2 + +# Block device example +#/dev/mmcblk0 0xc0000 0x20000 |