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Arcom Embedded Linux Technical Manual RedBoot

Download via Ethernet

If you do not have either a web (HTTP) or a TFTP server on your network, refer to your

host system documentation for information about setting one up. If the image you want

to download is small, it may be quicker and easier to perform the download over a serial

connection.

The following instructions assume that you have placed the image you want to

download into the root folder of the TFTP or HTTP server, in a file named

image.img.

To load the image, follow these steps:

1 Configure the network interface if you have not already configured the board with

an IP address. To do this, enter:

RedBoot> ip –l IP_ADDRESS -h SERVER_IP_ADDRESS

2 Load the image over TFTP or HTTP as follows:

If using TFTP, enter: •

•

RedBoot> load –r –b %{FREEMEMLO} –m tftp image.img

If using HTTP, most webservers require that the leading forward slash (/) be

present in the file name, so enter:

RedBoot> load –r –b %{FREEMEMLO} –m http /image.img

Loading from a JFFS2 file system

RedBoot provides a mount command that performs a similar function to the Linux

mount command. Only JFFS2 file systems are supported by RedBoot. However, JFFS2

must still be specified using the –t parameter.

RedBoot> mount –t jffs2 –f <partition>

The –f parameter specifies the FIS partition that contains the JFFS2 file system to

access. You can obtain a list of the currently defined partitions using the fis list

command described below. Only one file system may be mounted at a time. The

umount command unmounts the currently mounted file system:

RedBoot> umount

The load command is used to load files from the file system:

RedBoot> load –r –b %{FREEMEMLO} –m file /dir/image.img

The ls command can be used to list the files in a mounted file system:

RedBoot> ls –d /boot

1 2 ... 54 55 56 57 58 59 60 61 62 63 64 ... 71 72

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Eurotech ZEUS Manual do Utilizador Página 59