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2025-08-01env: mtd: initialize saved_buf pointerShiji Yang
When sect_size is greater than the CONFIG_ENV_SIZE, this wild pointer will cause CPU halt or system crash. Fixes: 03fb08d4aef8 ("env: Introduce support for MTD") Signed-off-by: Shiji Yang <[email protected]>
2025-08-01env: mtd: add the missing put_mtd_device()Shiji Yang
The mtd device is got in setup_mtd_device(), we must put the mtd device before exiting the function to update the mtd use count. This patch fixes the following env error: > Removing MTD device #2 (u-boot-env) with use count 1 > Error when deleting partition "u-boot-env" (-16) Fixes: 03fb08d4aef8 ("env: Introduce support for MTD") Signed-off-by: Shiji Yang <[email protected]>
2025-05-23env: mtd: fix usability with NAND flashesWeijie Gao
1. As this is for MTD-based devices, the Kconfig dependency should be MTD instead of only spi-nor flashes 2. Initialize saved_buf to avoid crash on free() 3. Remaining size should be set correctly to write_size Fixes: 03fb08d4aef (env: Introduce support for MTD) Signed-off-by: Weijie Gao <[email protected]> Reviewed-by: Christian Marangi <[email protected]>
2025-05-05env: Introduce support for MTDChristian Marangi
Introduce support for env in generic MTD. Currently we only support SPI flash based on the lagacy sf cmd that assume SPI flash are always NOR. This is not the case as to SPI controller also NAND can be attached. To support also these flash scenario, add support for storing and reading ENV from generic MTD device by adding an env driver that base entirely on the MTD api. Introduce a new kconfig CONFIG_ENV_IS_IN_MTD and CONFIG_ENV_MTD_DEV to define the name of the MTD device as exposed by mtd list. Signed-off-by: Christian Marangi <[email protected]>