giftstock.blogg.se

1. #Adding i2c u boot commands how to
2. #Adding i2c u boot commands serial
3. #Adding i2c u boot commands driver
4. #Adding i2c u boot commands manual

For executing a Linux kernel bootup, using this snippet, simply type run goīootcmd when set, this variable content is executed automatically after the boot delay. Setenv linux 'tftp $ linux-2.6.x.img' line is equivalent of typing tftp 0x21400000 linux-2.6.x.img but combined with others and stored in flash, it allows you to save time, and automate. Here is a summary of several variables built to make a network loading of linux easier : You can create script or complex variables, which prevents you to type commands.

#Adding i2c u boot commands manual

Refer to the U-Boot manual page for the command line interface. Version - print monitor, compiler and linker version Tftpboot- boot image via network using TFTP protocol Showvar - print local hushshell variables Saveenv - save environment variables to persistent storage Run - run commands in an environment variable Protect - enable or disable FLASH write protection Ping - send ICMP ECHO_REQUEST to network host Nfs - boot image via network using NFS protocol Mm - memory modify (auto-incrementing address)

#Adding i2c u boot commands serial

Loady - load binary file over serial line (ymodem mode) Loadx - load binary file over serial line (xmodem mode) Loadb - load binary file over serial line (kermit mode) Itest - return true/false on integer compare Imxtract- extract a part of a multi-image Iminfo - print header information for application image Here is a selection of useful commands :īootd - boot default, i.e., run 'bootcmd'īootm - boot application image from memoryīootp - boot image via network using BOOTP/TFTP protocolīootz - boot Linux zImage image from memoryĬoninfo - print console devices and informationĭhcp - boot image via network using DHCP/TFTP protocolįatinfo - print information about filesystemįatload - load binary file from a dos filesystemįatls - list files in a directory (default /)įatwrite- write file into a dos filesystemįdt - flattened device tree utility commands The help command show a brief summary of the built-in commands of U-Boot.

Printenv this command print the current variables Saveenv this command saves variables previously set in the environment permanent storage space Setenv this command is used to set variables

#Adding i2c u boot commands driver

Please check the FAQ page about Driver Model in U-Boot for more information. Now U-Boot moves to the Driver model and use of the Device Tree. Note however that it is possible to avoid this step and to directly boot Linux from AT91Bootstrap, in a production phase for instance.

It is responsible of configuring main interfaces and launching a Linux system. U-Boot takes place in the Linux demo as a third stage bootloader. Thematic documentation is also available in the doc/ directory. Note that a detailed documentation is simply available in the source code package as the README file. U-Boot documentation is very rich in addition to the official U-Boot website, several others are dealing with U-Boot getting started or configuration. It is of course available for AT91 ARM processors.

#Adding i2c u boot commands how to

How to patch Device Tree Blob in U-boot using Overlays.Boot pre-defined variables and command:.