On Wed, Mar 13, 2019 at 12:15:45PM +0100, Heiko Schocher wrote:
This reverts commit 9a9d66f5eff0f443de4c2c6ca3e27771ed14b1b4.
because it breaks fw_setenv and U-Boot interworking, if U-Boot environment is stored in a SPI-NOR.
Reproduce it with: boot linux with empty Environment and store a variable with fw_setenv into it, the Environment is now filled with 0xff:
root@ckey5e:10:8e:~# hexdump -C /dev/mtd4 00000000 e9 e8 07 fa 01 62 6f 6f 74 63 6d 64 3d 72 75 6e |.....bootcmd=run| [...] 00000f30 7d 00 75 62 69 62 6f 6f 74 76 6f 6c 3d 32 00 00 |}.ubibootvol=2..| 00000f40 00 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
Boot now U-Boot prints:
Loading Environment from SPI Flash... SF: Detected s25fl128l with page size 256 Bytes, erase size 4 KiB, total 16 MiB *** Warning - bad CRC, using default environment
Reason is the above commit, as it only reads until \0\0 is found, and assumes the rest of the Environment space is filled with 0x00, which is not the case when saving an Environment under linux with fw_setenv.
Signed-off-by: Heiko Schocher hs@denx.de Acked-by: Stefano Babic sbabic@denx.de
Applied to u-boot/master, thanks!