[FE training-materials-updates] Revert "Android: README explaining how to install U-Boot"

Fri Apr 11 10:35:06 CEST 2014

Repository : git://git.free-electrons.com/training-materials.git

On branch  : master
Link       : http://git.free-electrons.com/training-materials/commit/?id=81c422f36a9dd3787d6495b25ad00955f31a2907

>---------------------------------------------------------------

commit 81c422f36a9dd3787d6495b25ad00955f31a2907
Author: Alexandre Belloni <alexandre.belloni at free-electrons.com>
Date:   Fri Apr 11 10:32:46 2014 +0200

    Revert "Android: README explaining how to install U-Boot"
    
    This reverts commit 487f500bdde237dcccef119c403a2c20922c7098.
    
    Remove content written by Chris Simmonds as he chose not to transfer his
    copyright to Free Electrons.
    
    Signed-off-by: Alexandre Belloni <alexandre.belloni at free-electrons.com>


>---------------------------------------------------------------

81c422f36a9dd3787d6495b25ad00955f31a2907
 lab-data/android/bootloader/README.txt |  134 --------------------------------
 1 file changed, 134 deletions(-)

diff --git a/lab-data/android/bootloader/README.txt b/lab-data/android/bootloader/README.txt
deleted file mode 100644
index ab375b8..0000000
--- a/lab-data/android/bootloader/README.txt
+++ /dev/null
@@ -1,134 +0,0 @@
-======================================================================
-Install U-Boot on the BeagleBone Black's internal flash storage (eMMC)
-======================================================================
-
-We use a version of U-Boot that supports the Android fastboot protocol
-and can read Android boot image files
-
-Tested on the following board revisions:
-- Rev A5C
-
-Make a bootable micro-SD card
------------------------------
-
-We are going to prepare a bootable micro-SD card that will allow us to
-use fastboot comands to write to the internal eMMC memory.
-
-Take a micro-SD card and connect it to your PC:
-- Either using a direct SD slot if available.
-  In this case, the card should be seen as '/dev/mmcblk0' by
-  your computer (check the 'dmesg' command output).
-- Either using a memory card reader.
-  In this case, the card should be seen as '/dev/sdb', or '/dev/sdc',
-  etc.
-
-Now, run the mount command to check for mounted SD card
-partitions. Umount them with a command such as
-'sudo umount /dev/mmcblk0p1' or 'sudo umount /dev/sdb1',
-depending on how the system sees the media card device.
-
-Now type the below command to partition the micro-SD card
-(we assume that the card is seen as '/dev/mmcblk0'):
-
-sudo sfdisk --in-order --Linux --unit M /dev/mmcblk0 << EOF
-1,48,0xE,*
-,,,-
-EOF
-
-Now, format the first partition in FAT format:
-
-sudo mkfs.vfat -F 16 /dev/mmcblk0p1 -n boot
-
-Remove the card and insert it again. It should automatically be
-mounted '/media/boot' (or '/media/<user>/boot' if you are using Ubuntu
-12.10 or later).
-
-Now, copy the files to this partition:
-
-cp MLO u-boot.img /media/boot/
-
-Now, unmount '/media/boot' and you are done!
-
-Using your bootable micro-SD card
----------------------------------
-
-WARNING: this will erase everything in the eMMC storage. If you want
-to restore the factory default installation later, follow the
-instructions here: http://elinux.org/Beagleboard:Updating_The_Software
-
-As well as the BeagleBone and micro SD card, you will need a serial to
-USB cable and it is recommended that you use an external power supply
-because the current used whe writing to the eMMC chip may exceed that
-supplied by a typical USB port.
-
-With no power on the BeagleBone board, insert the micro-SD card in the
-corresponding slot.
-
-Plug in the serial cable. A serial port should appear on your PC as
-/dev/ttyUSB0. Start a suitable terminal program such as picocom and
-attach to the port:
-
-picocom -b 115200 /dev/ttyUSB0
-
-Now, press and hold the 'Boot Switch' button on the Beaglebone (it is
-the only one near the USB host slot), power up the board using the
-external 5V power connector and release the button after about 5
-seconds.
-
-You should see a U-Boot prompt on the serial console
-
-U-Boot#
-
-Type "fastboot" to enable the fastboot protocol on U-Boot. Make sure
-that you have plugged in the USB cable between the micro USB port on
-the BeagleBone and the PC. On the PC, check that the BeagleBone is
-detected:
-
-fastboot devices
-90:59:af:5e:94:81	fastboot
-
-Change into the directory containing MLO and u-boot.bin. Use fastboot
-to flash them into the eMMC chip on the BeagleBone:
-
-$ fastboot oem format
-$ fastboot flash spl MLO
-$ fastboot flash bootloader u-boot.img
-
-Power off the board, remove the SD card and check that it boots from
-eMMC with the new U-Boot installed.
-
-Now you can flash Android images into the eMMC partitions using
-commands such as
-
-fastboot flash userdata
-fastboot flash cache
-fastboot flashall
-
-===============================
-How the binaries where compiled
-===============================
-
-Compiling U-Boot
-----------------
-
-Get a copy of the source code:
-
-git clone git://git.free-electrons.com/android/beagleboneblack/u-boot
-cd u-boot
-git checkout am335x-v2013.01.01-bbb-fb
-
-Since you are likely to be building this along with AOSP, we are using
-the Android cross compiler from prebuilts, but probably any recent arm
-eabi toolchain will do. If you have sourced build/envsetup.sh and
-selected the lunch combo the path will be set up already. If not set
-it now, where ${AOSP} is the place where you installed your AOSP. It
-was tested with Android 4.3, which has gcc version 4.7:
-
-PATH=${AOSP}/prebuilts/gcc/linux-x86/arm/arm-eabi-4.7/bin:$PATH
-
-Then configure and build:
-$ make CROSS_COMPILE=arm-eabi- distclean
-$ make CROSS_COMPILE=arm-eabi- am335x_evm_config
-$ make CROSS_COMPILE=arm-eabi- 
-
-This produces the two files: MLO and u-boot.img.

