1*4882a593SmuzhiyunThe /config node (Configuration Options) 2*4882a593Smuzhiyun---------------------------------------- 3*4882a593Smuzhiyun 4*4882a593SmuzhiyunA number of run-time configuration options are provided in the /config node 5*4882a593Smuzhiyunof the control device tree. You can access these using fdtdec_get_config_int(), 6*4882a593Smuzhiyunfdtdec_get_config_bool() and fdtdec_get_config_string(). 7*4882a593Smuzhiyun 8*4882a593SmuzhiyunAvailable options are: 9*4882a593Smuzhiyun 10*4882a593Smuzhiyunsilent-console 11*4882a593Smuzhiyun If present and non-zero, the console is silenced by default on boot. 12*4882a593Smuzhiyun 13*4882a593Smuzhiyunno-keyboard 14*4882a593Smuzhiyun Tells U-Boot not to expect an attached keyboard with a VGA console 15*4882a593Smuzhiyun 16*4882a593Smuzhiyunu-boot,efi-partition-entries-offset 17*4882a593Smuzhiyun If present, this provides an offset (in bytes, from the start of a 18*4882a593Smuzhiyun device) that should be skipped over before the partition entries. 19*4882a593Smuzhiyun This is used by the EFI/GPT partition implementation when a device 20*4882a593Smuzhiyun is formatted. 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun This setting will override any values configured via Kconfig. 23*4882a593Smuzhiyun 24*4882a593Smuzhiyunu-boot,mmc-env-partition 25*4882a593Smuzhiyun if present, the environment shall be placed at the last 26*4882a593Smuzhiyun CONFIG_ENV_SIZE blocks of the partition on the 27*4882a593Smuzhiyun CONFIG_SYS_MMC_ENV_DEV. 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun if u-boot,mmc-env-offset* is present, this setting will take 30*4882a593Smuzhiyun precedence. In that case, only if the partition is not found, 31*4882a593Smuzhiyun mmc-env-offset* will be tried. 32*4882a593Smuzhiyun 33*4882a593Smuzhiyunu-boot,mmc-env-offset 34*4882a593Smuzhiyunu-boot,mmc-env-offset-redundant 35*4882a593Smuzhiyun If present, the values of the 'u-boot,mmc-env-offset' and/or 36*4882a593Smuzhiyun of the u-boot,mmc-env-offset-redundant' properties overrides 37*4882a593Smuzhiyun CONFIG_ENV_OFFSET and CONFIG_ENV_OFFSET_REDUND, respectively, 38*4882a593Smuzhiyun for SD/MMC devices. 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun Values are interpreted as the offset from the start of the 41*4882a593Smuzhiyun device, specified in bytes. It is assumed that the setting 42*4882a593Smuzhiyun will point at the beginning of a LBA and values that are not 43*4882a593Smuzhiyun LBA-aligned will be rounded up to the next LBA address. 44*4882a593Smuzhiyun 45*4882a593Smuzhiyunu-boot,spl-payload-offset 46*4882a593Smuzhiyun If present (and SPL is controlled by the device-tree), this allows 47*4882a593Smuzhiyun to override the CONFIG_SYS_SPI_U_BOOT_OFFS setting using a value 48*4882a593Smuzhiyun from the device-tree. 49*4882a593Smuzhiyun 50*4882a593Smuzhiyunsysreset-gpio 51*4882a593Smuzhiyun If present (and supported by the specific board), indicates a 52*4882a593Smuzhiyun GPIO that can be set to trigger a system reset. It is assumed 53*4882a593Smuzhiyun that such a system reset will effect a complete platform reset, 54*4882a593Smuzhiyun being roughly equivalent to a power-on reset. 55