The Software; The Linux Os Distribution; The Bootloader Procedure; How To Select The Linux Kernel Sources - Eurotech ReliaGATE 10-05-34 Original User Manual

ReliaGATE 10-05-34 User Manual Rev 1-0
11 T S
HE
11.1

The Linux OS distribution

Eurotech can provide a Linux operating systems based on Yocto framework (www.yoctoproject.org) as
well as an SDK for application development.
All the documentation for the developer is available from: www.yoctoproject.org/documentation.
11.2

The bootloader procedure

The bootloader procedure is the following:
1. The MLO file is loaded from the on-board eMMC memory, and saved in the on-chip memory to
configure the RAM memory for use
2. The u-boot.img file is loaded, saved in the RAM memory, and executed
3. U-Boot executes the Linux kernel from either one of the following sources:
4. U-Boot fetches the Linux kernel (/boot/zImage) and the device tree (/boot/reliagate-10-11.dtb), and
boots the operating system up
11.2.1

How to select the Linux kernel sources

U-boot can execute the Linux kernel from either one of the following sources:
From the Ethernet from a server with a defined IP address
l
From the on-board eMMC
l
To select the Linux kernel source use the DIP switch selector located on the front panel, sliding lever 4.
The sliding lever has the following meaning:
Lever # Description
4
11.2.2

How to set up a correct eMMC card partition

To allow the correct bootloader procedure, configure the eMMC memory with at least these 2 partitions:
1st partition:
l
2nd partition:
l
OFTWARE
From the Ethernet from a server with a defined IP address
l
From the on-board eMMC
l
ON: U-boot executes the Linux kernel from the Ethernet
OFF: U-boot executes the Linux kernel from the on-board eMMC (default configuration)
Type: FAT16
o
Flags: lba, boot
o
Contains the files: MLO and u-boot.img
o
Type: ext4
o
Contains the operating system, including the Linux kernel (/boot/zImage) and the device tree
o
(/boot/reliagate-10-11.dtb)

11 The Software

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