Eurotech ZEUS Bedienungsanleitung PDF herunterladen (Seite 62)

Arcom Embedded Linux Technical Manual RedBoot

For example, the following command creates an image table entry named ‘application’:

RedBoot> fis create -f 0x00002000 -l 0xfe000 -b 0x200000 -e 0x200000 -n application

This does not update the image itself. The image resides from offset 0x00002000 to

0x00100000 in Flash and has a memory address and entry point of 0x200000.

More commonly, only the –f and –l options are required. For example to create an

image named ‘kernel’ at offset 0x200000 in Flash with length 0x100000.

RedBoot> fis create -f 0x200000 -l 0x0x100000 kernel

The image data and other parameters are taken from the preceding load command.

Updating a single FIS image

Once the image has been loaded into RAM you can use the fis create command to

update it. The location of the image in RAM and the size is remembered from the last

load command. For example, to update a partition named ‘filesystem’, enter the

following (assuming you have already loaded the image into RAM as described

previously):

RedBoot> fis create filesystem

Loading a Flash image into RAM

An image that is stored in the Flash can be loaded into RAM using the fis load

command. By default the image is loaded to the RAM address stored in the partition

table entry (supplied by the –r or –b parameters to fis create). The RAM address can

be overridden using the –b parameter. For example, to load the image named ‘kernel’

into RAM at the address given by the Memory Base property in the partition table entry:

RedBoot> fis load kernel

To load the image named ‘kernel’ to the base of available memory instead of the

address stored in the partition table:

RedBoot> fis load –b %{FREEMEMLO} kernel

Unlocking the Flash

Some Flash devices require the Flash to be unlocked before writing. The fis unlock

command is therefore provided on boards with these devices. This command takes

either a Flash offset to start unlocking from (using the –f parameter) and a length in

bytes to unlock (using the –l parameter), or the name of an existing Flash image to

unlock.

To unlock the entire Flash enter the following (where FLASH_SIZE is the size in bytes

of the Flash device):

RedBoot> fis unlock –f 0x0 –l <FLASH_SIZE>

To unlock a FIS partition named ‘filesystem’:

RedBoot> fis unlock filesystem

1 2 ... 57 58 59 60 61 62 63 64 65 66 67 ... 71 72

Keine Kommentare

Eurotech ZEUS Bedienungsanleitung Seite 62