From: Anthony Loiseau anthony.loiseau@allcircuits.com

As already done for NOR chips, if device ESIZE and ENVSECTORS static configurations are both zero, then autodetect them at runtime.

Cc: Joe Hershberger joe.hershberger@ni.com Cc: Stefan Agner stefan.agner@toradex.com Signed-off-by: Anthony Loiseau anthony.loiseau@allcircuits.com --- tools/env/README | 3 +++ tools/env/fw_env.c | 11 +++++++++-- 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/tools/env/README b/tools/env/README index 480a893202..b8c6a7e197 100644 --- a/tools/env/README +++ b/tools/env/README @@ -58,6 +58,9 @@ DEVICEx_ENVSECTORS defines the number of sectors that may be used for this environment instance. On NAND this is used to limit the range within which bad blocks are skipped, on NOR it is not used.

+If DEVICEx_ESIZE and DEVICEx_ENVSECTORS are both zero, then a runtime +detection is attempted for NOR and NAND mtd types. + To prevent losing changes to the environment and to prevent confusing the MTD drivers, a lock file at /run/fw_printenv.lock is used to serialize access to the environment. diff --git a/tools/env/fw_env.c b/tools/env/fw_env.c index c9a8774ace..9f57f19d80 100644 --- a/tools/env/fw_env.c +++ b/tools/env/fw_env.c @@ -1659,8 +1659,15 @@ static int check_device_config(int dev) } DEVTYPE(dev) = mtdinfo.type; if (DEVESIZE(dev) == 0 && ENVSECTORS(dev) == 0 && - mtdinfo.type == MTD_NORFLASH) - DEVESIZE(dev) = mtdinfo.erasesize; + mtdinfo.erasesize > 0) { + if (mtdinfo.type == MTD_NORFLASH) + DEVESIZE(dev) = mtdinfo.erasesize; + else if (mtdinfo.type == MTD_NANDFLASH) { + DEVESIZE(dev) = mtdinfo.erasesize; + ENVSECTORS(dev) = + mtdinfo.size / mtdinfo.erasesize; + } + } if (DEVESIZE(dev) == 0) /* Assume the erase size is the same as the env-size */ DEVESIZE(dev) = ENVSIZE(dev);