Once it done, you can find all required images under ~/oe-layersetup-sdk7/build/arago-tmp-external-linaro-toolchain/deploy/images/

You may want to build programs that aren’t installed into a root file system so you can make them available via a feed site (described below.) To do this you can build the package directly and then build the package named package-index to add the new package to the feed site.

The following example builds the minicom program and makes it available on the feed site:

deploy/images/* 

This folder contains the binary images for the root file system and the Embedian SMARCT335X specific version of the am335x SDK. Specifically the images are:

deploy/images/u-boot.img 

This u-boot bootloader binary for SMARC T335X

deploy/images/MLO

The "Stage 1 Boot Loader" for SMARC T335X.  Its purpose is load the Stage 2 Boot Loader (u-boot.img).

deploy/images/zImage

The kernel zImage for SMARC T335X.  

deploy/images/zImage-am335x-smarct335x.dtb

The device tree binary file for SMARC T335X. 

deploy/images/smarct335x-rootfs-image-smarct335x*

Embedian root file system images for software development on Embedian’s SMARC T335X platforms.

deploy/images/smarct335x-amsdk-image*

 These files contain the entire TI AMSDK augmented with Boost and other options to simplify Embedian SMARC T335X software development.

 deploy/images/arago-base-tisdk-image-smarct335x*

 These images are used to create the SMARC T335X AMSDK (see smarct335x-amsdk-image-smarct335x*).

 deploy/images/tisdk-rootfs-image-am335x-evm*

TI Arago root file system images for software development on TI’s am335x-evm and BeagleBone platforms.

 deploy/ipk/*

 This folder contains all the packages used to construct the root file system images. They are in opkg format (similar format to Debian packages) and can be dynamically installed on the target plaform via a properly  constructed feed file. Here is an example of the feed file (named arago-smarct335x-feed.conf) that is used internally at Embedian to install upgrades onto a smarct335x platform without reflashing the file system:

Setup SD Card

 
For these instruction, we are assuming: DISK=/dev/mmcblk0, "lsblk" is very useful for determining the device id.

Erase SD card:

Create Partition Layout:

Format Partitions:

Mount Partitions:

On some systems, these partitions may be auto-mounted...

Install Bootloader

Copy MLO/u-boot.img to the boot partition

uEnv.txt based bootscript

Create "uEnv.txt" boot script: (vim uEnv.txt)

For 3.12.y or after :

Copy uEnv.txt to the boot partition:

Install Kernel zImage

Copy zImage to the boot partition:

Install Kernel Device Tree Binary

Copy device tree binary to /media/boot/dtbs (Note: the file name in /media/boot/dtbs/ has to be am335x-smarct335x.dtb) 

Install Root File System and Kernel Modules

Install Root File System

Copy Root File System:

Arago:

Note:

Kernel modules are included in root file systems. 

The following procedure can be used on a Embedian SMARC T335X device to download and utilize the feed file show above to install the minicom terminal emulation program:

DESCRIPTION = "Hello World Recipe using autotools"
HOMEPAGE = "http://www.embedian.com/"
SECTION = "console/utils"
PRIORITY = "optional"
LICENSE = "GPL"
PR = "r0"
 
SRC_URI = "git://git@git.embedian.com/developer/helloworld-autotools.git;protocol=ssh;tag=v1.0"
S = "${WORKDIR}/git"
 
inherit autotools

DESCRIPTION = "HelloWorld"
SECTION = "examples"
LICENSE = "GPL"
 
SRC_URI = "file://helloworld.c"
 
S = "${WORKDIR}"
 
do_compile() {
    ${CC} ${CFLAGS} ${LDFLAGS} helloworld.c -o helloworld
}
 
do_install() {
    install -d ${D}${bindir}
    install -m 0755 helloworld ${D}${bindir}
}