X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=doc%2FREADME.update;h=a7f4d9ebe5ddddb317f8ac50c85ee3839e65201b;hb=4ed6095f70e81a2cd4dfdb87192e3ac292b62fed;hp=a4760025bff0d84f7971f8b6c4edb36ae1d0482b;hpb=f61f1e150c84f5b9347fca79a4bc5f2286c545d2;p=karo-tx-uboot.git diff --git a/doc/README.update b/doc/README.update index a4760025bf..a7f4d9ebe5 100644 --- a/doc/README.update +++ b/doc/README.update @@ -39,11 +39,11 @@ The auto-update feature uses the following configuration knobs: These knobs control the timeouts during initial connection to the TFTP server. Since a transfer is attempted during each boot, it is undesirable to have a long delay when a TFTP server is not present. - CONFIG_UPDATE_TFTP_MSEC_MAX specifies the number of seconds to wait for the - server to respond to initial connection, and CONFIG_UPDATE_TFTP_CNT_MAX + CONFIG_UPDATE_TFTP_MSEC_MAX specifies the number of milliseconds to wait for + the server to respond to initial connection, and CONFIG_UPDATE_TFTP_CNT_MAX gives the number of such connection retries. CONFIG_UPDATE_TFTP_CNT_MAX must be non-negative and is 0 by default, CONFIG_UPDATE_TFTP_MSEC_MAX must be - positive and is 1 by default. + positive and is 100 by default. Since the update file is in FIT format, it is created from an *.its file using the mkimage tool. dtc tool with support for binary includes, e.g. in version @@ -51,6 +51,11 @@ the mkimage tool. dtc tool with support for binary includes, e.g. in version to be prepared. Refer to the doc/uImage.FIT/ directory for more details on FIT images. +This mechanism can be also triggered by the commmand "fitupd". +If an optional, non-zero address is provided as argument, the TFTP transfer +is skipped and the image at this address is used. +The fitupd command is enabled by CONFIG_CMD_FITUPD. + Example .its files ------------------