please stay on list...i'm no expert in fat-environment, only have some experience on out-of-partition environment-storage (env on mmc). This seems not your case...
i don't know if env_offset is used on fat (makes no sense in my eyes) and env_is_on_mmc is disabled where did your fat-partition start? if it starts after 1M offset uboot should not overwrite itself with saveenv. following your dd starts at 8k-offset and have which size (typically <1M)? your erase before cleans first 1M (except first 1k where partitiontable is located). why do you think the target-file should be hidden? imho it is a normal file on mmc 0 and maybe first fat-partition (auto-flag) named "uboot.env". you found the file on /?? this should not be a fat-partition. linux imho needs a partiton with permission-options (extx,reiser,...). i guess you mean additional fat-partition, maybe mounted to /boot. maybe you can add some debug-messages in saveenv for fat (env/fat.c env_fat_save, fs/fat/fat_write.c file_fat_write) regards Frank > Gesendet: Dienstag, 09. April 2019 um 23:21 Uhr > Von: "U.Mutlu" <[email protected]> > $ ls -l u-boot-sunxi-with-spl.bin > -rw-r--r-- 1 xy xy 479836 Apr 9 17:55 u-boot-sunxi-with-spl.bin > > I used the following to write u-boot to the SD card (/dev/sdb): > > # dd if=/dev/zero of=/dev/sdb bs=1k count=1023 seek=1 > # dd if=u-boot-sunxi-with-spl.bin of=/dev/sdb bs=1024 seek=8 > > $ grep -i ENV_ .config > > CONFIG_ENV_SIZE=0x20000 > > CONFIG_ENV_OFFSET=0x88000 > > CONFIG_ENV_VARS_UBOOT_CONFIG=y > > # CONFIG_SYS_CONSOLE_ENV_OVERWRITE is not set > > # CONFIG_SPL_ENV_SUPPORT is not set > > CONFIG_CMD_ENV_EXISTS=y > > # CONFIG_CMD_ENV_CALLBACK is not set > > # CONFIG_CMD_ENV_FLAGS is not set > > # CONFIG_ENV_IS_IN_EEPROM is not set > > CONFIG_ENV_IS_IN_FAT=y > > # CONFIG_ENV_IS_IN_EXT4 is not set > > # CONFIG_ENV_IS_IN_FLASH is not set > > # CONFIG_ENV_IS_IN_MMC is not set > > # CONFIG_ENV_IS_IN_NAND is not set > > # CONFIG_ENV_IS_IN_NVRAM is not set > > # CONFIG_ENV_IS_IN_ONENAND is not set > > # CONFIG_ENV_IS_IN_REMOTE is not set > > # CONFIG_ENV_IS_IN_SPI_FLASH is not set > > # CONFIG_ENV_IS_IN_UBI is not set > > CONFIG_ENV_FAT_INTERFACE="mmc" > > CONFIG_ENV_FAT_DEVICE_AND_PART="0:auto" > > CONFIG_ENV_FAT_FILE="uboot.env" > > # CONFIG_USE_DEFAULT_ENV_FILE is not set > > # CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG is not set > > > >> $ grep ENV_FAT .config > >> CONFIG_ENV_FAT_INTERFACE="mmc" > >> CONFIG_ENV_FAT_DEVICE_AND_PART="0:auto" > >> CONFIG_ENV_FAT_FILE="uboot.env" > >> > >> I guess the uboot.env is a hidden file, but occassionally (esp. after > >> saveenv & reboot) I see this file as a normal file in /, not hidden. > >> > >> I used "Lamobo_R1_defconfig" as basis and made just a few > >> irrelevant minor changes in make menuconfig. > >> It's actually a Banana Pi R1 board. > >> CONFIG_DEFAULT_DEVICE_TREE="sun7i-a20-lamobo-r1" _______________________________________________ U-Boot mailing list [email protected] https://lists.denx.de/listinfo/u-boot
