Phytec Linux-Kit phyCARD-M, Быстрый старт

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phyCARD-M Installing Linux on the phyCARD-M
© 2010 PHYTEC Messtechnik GmbH L-746e_1
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6.4 Writing the Kernel / Root File System into Flash
Before the kernel and/or root file system can be written into the target’s
flash, the target will have to download the image from a TFTP server. This
will be done from the command line of the boot loader. First the image will
be downloaded via TFTP and copied into target’s RAM. Then the part of
the flash where the kernel or root file system should be written to must be
erased. Finally the kernel or root file system image can be transferred from
RAM into flash.
In the directory PHYTEC/PCA101 phyCARD-M/Linux-Kit/BSP/Images on
your setup CD-ROM you can find a file called uImage-pca101 – this file is
the Linux kernel image. There is another file, root-pca101.jffs2; this file
contains the Linux root file system.
•
Copy the files uImage-pca101 and root-pca101.jffs2 to your host’s
/tftpboot directory.
You can download the kernel or root file system from the TFTP server into
the target’s RAM, erase the corresponding flash partition, and write the
kernel from RAM into flash with one simple command,
update_kernel or
update_rootfs, respectively.
Before executing these commands, you should check that your Barebox
environment is properly configured.
•
Open Microcom and press the RESET button on the target.
You will see the message “Hit any key to stop autoboot.”
•
Press any key to stop autoboot.
•
Type the following command to check your Barebox settings:
edit /env/config