How To Change The Default Boot Option; The Production Fitimage; How To Define The Variants; How To Manually Configure The System To Boot From A Different Dtb Within The Current Fitimage - Eurotech ReliaGATE 10-12-6 Series User Manual

Appendix 1: Advanced boot options
1.1.3

How to change the default boot option

The default boot option is fitboot which boots the production kernel fitimage.
To change the default option, complete the following steps:
1. Access to the bootloader CLI
2. Enter the following commands:
where:
1.2

The production fitImage

The production fitImage contains all of the Device Tree Blobs (DTB's) required to configure the currently
supported variants.
A fitImage is essentially a partitioned binary filesystem, where each partition is signed and carries a
reference.
The current layout of the fitImage is as follows:
Image Reference
0 kernel@1
1 fdt@reliagate-10-12-xx.dtb
2 fdt@reliagate-10-12-spi.dtb
3 fdt@reliagate-10-12-gpio.dtb
* Image size and hash values shown are provided for example purposes only.
1.2.1

How to define the variants

At installation, to define the variant use the eurotech_install.sh script with the -c option:
./eurotech_install.sh -cgpio --no-java
This will select the 'gpio' DTB variant in the production fitImage.
NOTE: If no -c option is present, the -cxx option will be selected.
1.2.2 How to manually configure the system to boot from a different DTB within the
current fitImage
To manually configure the system to boot from a different DTB within the current fitImage, you have the
following options:
Option1: Configure the system in Linux (the fw_utils must be installed)
l
Option2: Configure the system in the bootloader
l
112 / 118
setenv bootcmd 'run <target>'
saveenv
boot
<target> is one of the available boot options
l
saveenvis the command that writes the changes to flash, making them permanent.
l
Do not enter the saveenv command if you wish the change to only apply to the
current boot
Description Size (bytes)* Hash*
Linux kernel 4527064
xx variant 37215
Flattened DTB
spi variant 36763
Flattened DTB
gpio variant 36557
Flattened DTB
ReliaGATE 10-12 User manual Rev. 2-1
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