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| author | Justin Treon <justin_treon@yahoo.com> | 2008-01-30 10:25:49 -0800 |
|---|---|---|
| committer | David Woodhouse <dwmw2@infradead.org> | 2008-02-03 18:25:16 +1100 |
| commit | e619a75ff6201b567a539e787aa9af9bc63a3187 (patch) | |
| tree | f13113ce617958181d5cd6b2c56ae9f7b87d0014 /drivers/mtd/cmdlinepart.c | |
| parent | 842b1a105c95d22c3e4257879539413d3152629e (diff) | |
| download | talos-obmc-linux-e619a75ff6201b567a539e787aa9af9bc63a3187.tar.gz talos-obmc-linux-e619a75ff6201b567a539e787aa9af9bc63a3187.zip | |
[MTD] Unlocking all Intel flash that is locked on power up.
Patch for unlocking all Intel flash that has instant locking on power up.
The patch has been tested on Intel M18, P30 and J3D Strata Flash.
1. The automatic unlocking can be disabled for a particular partition
in the map or the command line.
a. For the bit mask in the map it should look like:
.mask_flags = MTD_POWERUP_LOCK,
b. For the command line parsing it should look like:
mtdparts=0x80000(bootloader)lk
2. This will only unlock parts with instant individual block locking.
Intel parts with legacy unlocking will not be unlocked.
Signed-off-by: Justin Treon <justin_treon@yahoo.com>
Signed-off-by: Jared Hulbert <jaredeh@gmail.com>
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Diffstat (limited to 'drivers/mtd/cmdlinepart.c')
| -rw-r--r-- | drivers/mtd/cmdlinepart.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/mtd/cmdlinepart.c b/drivers/mtd/cmdlinepart.c index 23fab14f1637..b44292abd9f7 100644 --- a/drivers/mtd/cmdlinepart.c +++ b/drivers/mtd/cmdlinepart.c @@ -9,7 +9,7 @@ * * mtdparts=<mtddef>[;<mtddef] * <mtddef> := <mtd-id>:<partdef>[,<partdef>] - * <partdef> := <size>[@offset][<name>][ro] + * <partdef> := <size>[@offset][<name>][ro][lk] * <mtd-id> := unique name used in mapping driver/device (mtd->name) * <size> := standard linux memsize OR "-" to denote all remaining space * <name> := '(' NAME ')' @@ -143,6 +143,13 @@ static struct mtd_partition * newpart(char *s, s += 2; } + /* if lk is found do NOT unlock the MTD partition*/ + if (strncmp(s, "lk", 2) == 0) + { + mask_flags |= MTD_POWERUP_LOCK; + s += 2; + } + /* test if more partitions are following */ if (*s == ',') { |
