alanyih

Emulating ARM on Debian/Ubuntu

https://gist.github.com/bdsatish/7476239


You might want to read this to get an introduction to armel vs armhf.

If the below is too much, you can try Ubuntu-ARMv7-Qemu but note it contains non-free blobs.
Install QEMU

alanyih

Device Tree port
https://github.com/raspberrypi/linux/wiki/Device-Tree-port

Table of Contents

        Overview
            Warning
        Blocking
        Implemented
            Branches

alanyih

How to boot using device tree
https://github.com/raspberrypi/linux/wiki/How-to-boot-using-device-tree

Table of Contents

        Bootloader Configuration
        Kernel
            Configuration
        Device Tree

alanyih

Obtaining RK3066 boot ROM.

Here are my steps.

At first, I took a look to RK30xxLoader(L)_V1.18.bin. This file appears in update.img for my device. So, I unpacked update.img using rk29Kitchen.

strings on that file returns nothing interesting, so I assumed the file is crypted

alanyih

https://github.com/felipec/git

alanyih

   echo "*---* VonDroid.com RK device Root Tool based on work by sunnydavid *---*"
   echo "--- Plug in your device, make sure debugging is enabled in Developer Options"
   echo "--- This script will now copy files over to your RK device"
   
   adb shell mv /data/local/tmp /data/local/tmp.bak
   adb shell ln -s /data /data/local/tmp
   adb reboot
   
   echo "--- Reboot 1/3 - Press Space Bar once the device has rebooted"
   read -p "or CTRL-C to exit"

alanyih

#!/usr/bin/perl
######################################################################
#
#   File          : split_bootimg.pl
#   Author(s)     : William Enck <[email protected]>
#   Description   : Split appart an Android boot image created 
#                   with mkbootimg. The format can be found in
#                   android-src/system/core/mkbootimg/bootimg.h
#
#                   Thanks to alansj on xda-developers.com for 

alanyih

get Android source code: http://source.android.com/source/downloading.html

$ cd /path/to/android-src
$ cd system/core/libmincrypt/
$ gcc -c *.c -I../include
$ ar rcs libmincrypt.a  *.o
$ cd ../mkbootimg
$ gcc mkbootimg.c -o mkbootimg -I../include ../libmincrypt/libmincrypt.a
$ cd ../cpio
$ gcc mkbootfs.c  -o mkbootfs -I../include