hellomoto_kmod

Example of Linux (hardhat) kernel module for MotoMAGX phones.

Requirements

• MotoMAGX Toolchain & SDK.
• Linux (hardhat) kernel source code.
• Mini-Platform build system framework.

Build

1. Create directory for experiments.

   mkdir -p ~/Projects/MagxKernel
   cd ~/Projects/MagxKernel

2. Download and install MotoMAGX Toolchain & SDK, setup it.

   TODO

3. Download MotoMAGX mini-platform build system framework, unpack it and setup.

   curl -LOJ "https://master.dl.sourceforge.net/project/motozinezn5.motorola/MOTOZINE%20ZN5/R6637_G_81.11.2CR_128/platform-R6637_G_81.11.2CR_128.tgz"
   tar -xvzf platform-R6637_G_81.11.2CR_128.tgz
   
   # Fix wrong file rights and set executable flag on necessary script.
   find platform -type f ! -path "*/.git/*" -exec chmod 0644 {} \;
   chmod 0755 platform/tools/bin/api_manager
   
   mv platform/Makefile.top Makefile
   
   # Just set "COMPILERTOOLPATH" variable to our MotoMAGX Toolchain & SDK.
   sed -i 's/COMPILERTOOLPATH = \/vobs\/jem\/cee4_lsp\/mobilinux\/devkit\/arm\/v6_vfp_le\/bin/COMPILERTOOLPATH = \/arm-eabi\/bin/g' Makefile

4. Download Linux (hardhat) sources, unpack it, setup and compile.

   curl -LOJ "https://master.dl.sourceforge.net/project/motozinezn5.motorola/MOTOZINE%20ZN5/R6637_G_81.11.2CR_128/hardhat-R6637_G_81.11.2CR_128.tgz"
   tar -xvzf hardhat-R6637_G_81.11.2CR_128.tgz
   
   # Fix some compilation error via patching vanilla file.
   # Additional information: https://github.com/GodFox/magx_kernel_xpixl/pull/1
   sed -i 's/+ =/+=/g' hardhat/linux-2.6.x/drivers/media/dvb/b2c2/Makefile
   
   make hardhat.dir V=1

   Alternatively, you can use the already patched and modern kernel sources from magx_kernel_xpixl by GodFox and motomagx-kernel_linux_hardhat by fill.sa projects.

   # 1. https://github.com/fillsa/motomagx-kernel_linux_hardhat by fill.sa.
   git clone https://github.com/fillsa/motomagx-kernel_linux_hardhat hardhat
   cd hardhat
   ln -s properties.xpixl.11.2cr properties
   cd ..
   
   # 2. https://github.com/GodFox/magx_kernel_xpixl by GodFox.
   git clone https://github.com/GodFox/magx_kernel_xpixl hardhat

5. Download this Linux (hardhat) kernel module sources and compile it.

   git clone https://github.com/EXL/hellomoto_kmod
   make hellomoto_kmod.dir V=1

6. Get compiled and ready to use Linux (hardhat) kernel module hellomoto.ko from build/hellomoto_kmod/lib/modules/2.6.10_dev/extra/ directory.

Use

insmod hellomoto.ko
dmesg

# Simulate pressing the "1" button on keypad.
# See all keycodes here: https://github.com/fillsa/motomagx-kernel_linux_hardhat/blob/master/linux-2.6.x/include/linux/keypad.h
echo "1" > /proc/hellomoto
dmesg

# Get status of camera lens cover by GPIO pin.
# See GPIO signals here: https://github.com/fillsa/motomagx-kernel_linux_hardhat/blob/master/linux-2.6.x/include/asm-arm/mot-gpio.h
cat /proc/hellomoto

Information

See additional information in the The Linux Kernel Module Programming Guide | 5.2. Read and Write a /proc File article, TODO article, and Сборка ядра для ZN5. Compiling your own kernel | TODO (in Russian) thread post.

// TODO: Fix link, add exlmoto.ru article