1 files changed, 72 insertions, 2 deletions

diff --git a/raspberrypi3-64/README b/raspberrypi3-64/README
index 47e7502..efe0126 100644
--- a/raspberrypi3-64/README
+++ b/raspberrypi3-64/README
@@ -1,8 +1,78 @@
-This file contains build and boot instructions for Enea Linux on RaspberryPi3,
+This file contains build and boot instructions for Enea Linux on
+raspberrypi3-64, standard profile.
 
-standard profile.
+Build instructions
+------------------
+$ mkdir enea-linux
+$ cd enea-linux
+$ repo init -u git@git.enea.com:linux/manifests/el_manifests-standard.git \
+    -b refs/tags/Enea_Linux_8.1 -m raspberrypi3-64/default.xml
+$ repo sync
+$ cd poky
+$ TEMPLATECONF=meta-el-standard/conf/template.raspberrypi3-64 . \
+    ./oe-init-build-env <build_dir>
+$ bitbake enea-image-standard / enea-image-standard-sdk
 
 
+Boot from RAM
+-------------
+Below you find an example that requires a TFTP server set up at IP address
+<tftp_server_ip>, and that the server stores the Enea Linux image files,
+kernel image, device tree blob and root filesystem, in
+/tftpboot/<download_directory>. 
 
+Once you have that in place, run the following commands on the target:
 
+## set tftp server IP
+U-Boot> setenv serverip <tftp_server_ip>
 
+## tftp the image files on the target machine
+U-Boot> tftpboot 0x01000000 Image  
+U-Boot> tftpboot 0x02000000 Image-bcm2837-rpi-3-b.dtb 
+U-Boot> tftpboot 0x03000000 enea-image-standard-raspberrypi3-64.ext2.gz.u-boot
+
+## add any other bootargs values if necessary 
+U-Boot> setenv bootargs "8250.nr_uarts=1 root=/dev/ram rw ramdisk_size=500000
+ip=dhcp \
+console=ttyS0,115200"
+
+## Start boot sequence
+U-Boot> booti 0x01000000 0x03000000 0x02000000
+
+
+
+Boot from SD card
+-----------------
+Copy the enea-image-standard-raspberrypi3-64.rpi-sdimg image to the SD card
+using the Linux dd tool or Win32DiskImager in Windows, and insert it into the
+RPi. The Raspberry Pi will not start without a properly formatted SD Card,
+containing the bootloader, kernel image and rootfs.
+
+Below you can find two methods of how to format an SD Card:
+
+1. Format and copy images to the SD card using the Linux dd command line
+
+    The dd command copies a file, converting the format of the data in the
+process, according to the operands specified:
+
+    $ sudo dd bs=4M if=enea-image-standard-sdk-raspberrypi3-64.rpi-sdimg of=/dev/sdg
+
+Note:
+    Use dd cautiously - improper usage or entering the wrong values could
+inadvertently wipe, destroy, or overwrite the data on your hard drive.
+
+2. Format the SD card using the Win32DiskImager program
+
+    1) Download and unzip Win32DiskImager
+    2) Run Win32DiskImager.exe
+    3) Select the drive of your SD card
+    4) Select the image enea-image-standard-raspberrypi3-64.rpi-sdimg
+    5) Click "Write" and wait for the write to complete
+    6) Exit the imager and eject the SD Card
+    7) Plug the card into your Raspberry Pi
+
+Note:
+    Be careful to select the correct drive. If you choose the wrong one you may
+destroy your HDD data. If you are using an SD Card slot and can't see the
+drive in the Win32DiskImager window, try using an affordable external adapter
+in a USB slot.