Rock/Linux Mainline

2015-07-17T09:22:53Z

Kevin: /* Linux Kernel 3.18-rc5 */

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{{Languages | rock/Linux_Mainline}}

= Linux Kernel 3.18-rc5 =

== Status ==

What currently works in Linux mainline:
* UART
* SPI
* I2C
* GPIOs / LEDs / IR
* PWM
* USB
* SD/MMC
* Ethernet
* Wifi
* Bluetooth

What remains to be done:
* DRM Display driver / LCD controller
* HDMI drivers (ITE66121 / RK616)
* TV OUT drivers (RK1000)
* NAND flash support

== Requirements ==

Ubuntu 14.10 / GCC 4.9+ (GCC 4.8 is not supported)

sudo apt-get install git build-essential gcc-arm-linux-gnueabihf lzop libncurses5-dev libssl-dev bc

== Get the source code ==

Get '''linux-next''' kernel tree (stable branch), default config and updated device-tree.

git clone -b stable --depth 1 git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
cd linux-next

wget http://rockchip.fr/radxa/linux/rockchip_defconfig -O arch/arm/configs/rockchip_defconfig
wget http://rockchip.fr/radxa/linux/rk3188-radxarock.dts -O arch/arm/boot/dts/rk3188-radxarock.dts

== Build kernel ==

We have to build two files:
* '''zImage''' (the kernel)
* '''rk3188-radxarock.dtb''' (the device tree blob)

export ARCH=arm
export CROSS_COMPILE=arm-linux-gnueabihf-

make rockchip_defconfig
make -j8 zImage dtbs

== Create boot image ==

Install mkbootimg if you don't have it on your system.

git clone https://github.com/neo-technologies/rockchip-mkbootimg.git
cd rockchip-mkbootimg
make
sudo make install
cd ..

We need to append the device tree blob to zImage (CONFIG_ARM_APPENDED_DTB option) until we can use U-Boot device tree support.

cat arch/arm/boot/zImage arch/arm/boot/dts/rk3188-radxarock.dtb > zImage-dtb

==get ramdisk==

git clone https://github.com/radxa/initrd.git
find . ! -path "./.git*" | cpio -H newc -ov > initrd.img

Create the '''boot.img''' using mkbootimg (Rockchip version).

mkbootimg --kernel zImage-dtb --ramdisk initrd.img -o boot.img

== Flash parameter and boot image ==

Get a parameter file from http://dl.radxa.com/rock/images/parameter

wget http://dl.radxa.com/rock/images/parameter/parameter_linux_sd

Flash parameter and boot.img using [https://github.com/linux-rockchip/rkflashtool '''rkflashtool''']

rkflashtool P < parameter_linux_sd
rkflashtool w boot < boot.img
rkflashtool b

= Notes =

== Install Rootfs in first partition of SD card ==

Your rootfs should be in ext4 format. It will be loaded from '''/dev/mmcblk0p1''' by default.

== Wireless ==

The Realtek wifi chipsets require firmwares to be installed in '''/lib/firmware/rtlwifi'''

You can get them by installing the '''linux-firmware''' package from your Linux distribution
sudo apt-get install linux-firmware

or download them from here: http://git.kernel.org/cgit/linux/kernel/git/firmware/linux-firmware.git/tree/rtlwifi

== Bluetooth ==

The '''rtl8723au_bt''' driver is not in the mainline kernel yet, but you can build it this way:

git clone -b new https://github.com/lwfinger/rtl8723au_bt.git
cd rtl8723au_bt/Linux_BT_USB_2.11.20140423_8723BE/
wget http://rockchip.fr/radxa/linux/patches/rtl8723au_bt/0001-Add-hci_recv_fragment-function.patch
git am 0001-Add-hci_recv_fragment-function.patch
make KDIR=../..

Copy the firmware files and '''rtk_btusb.ko''' into your rootfs:
8723A/rtl8723a_fw -> /lib/firmware/rtl8723a_fw
8723B/rtl8723b_fw -> /lib/firmware/rtl8723b_fw

Rock/Booting Linux/zh cn

2015-07-17T09:19:44Z

Kevin: /* 生成 ramdisk */

=== 开发要求 ===
* radxa rock (全版或者简版)
* 64bit Linux (e.g. Ubuntu) 开发环境
* micro USB 数据线
* 5V/2A的电源

=== Install the toolchain ===

下载交叉编译工具链

64bit 主机

git clone -b kitkat-release --depth 1 https://android.googlesource.com/platform/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6

或者从这里下载

[http://dl.radxa.com/rock/source/x86_64_arm-eabi-4.6.zip http://dl.radxa.com/rock/source/x86_64_arm-eabi-4.6.zip ]

32bit主机

git clone -b jb-release --depth 1 https://android.googlesource.com/platform/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6

或者在这里下载

[http://dl.radxa.com/rock/source/x86_32_arm-eabi-4.6.zip http://dl.radxa.com/rock/source/x86_32_arm-eabi-4.6.zip]

设置环境变量

export ARCH=arm
export CROSS_COMPILE=`pwd`/arm-eabi-4.6/bin/arm-eabi-

请确保这些交叉工具链能够正常工作,如有问题请参考错误提示信息清除问题

=== Get the source code ===

git clone -b radxa-stable-3.0 https://github.com/radxa/linux-rockchip.git

or download here
http://pan.baidu.com/s/1jfOTo (china)

=== 编译内核 ===

cd linux-rockchip

if your Rock is pro(Mid 2014) or the new lite(Mid 2014), use radxa_rock_pro_linux_defconfig, check out [[Rock/hardware_revision| hardware revision]]
make radxa_rock_pro_linux_defconfig

if your rock is full version(2013) or the old lite(2013), use radxa_rock_linux_defconfig, check out [[Rock/hardware_revision| hardware revision]]
make radxa_rock_linux_defconfig

make -j8

生成的内核文件位置是在 '''arch/arm/boot/Image'''。

=== 编译内核模块 ===
mkdir modules
export INSTALL_MOD_PATH=./modules
make modules && make modules_install
cd ..
现在所以的内核模块都在 '''modules/lib/modules/3.0.36+/'''文件夹中。

=== 生成 ramdisk ===

git clone https://github.com/radxa/initrd.git
find . ! -path "./.git*" | cpio -H newc -ov > initrd.img

=== 生成 boot.img ===
wget http://dl.radxa.com/rock/tools/linux/mkbootimg
sudo apt-get install lib32stdc++6
chmod +x mkbootimg
./mkbootimg --kernel linux-rockchip/arch/arm/boot/Image --ramdisk initrd.img -o boot.img

完成。现在已经生成了RR的“boot.img”文件了。

=== 修改 parameter 文件===
linux的根文件系统（rootfs）可能处于不同的分区或者媒介中（比如nand、SD卡或者U盘），所以你需要告诉内核应该加载哪一个根文件系统。修改你的parameter文件的“root= ”这一行，指向你想加载的那个根文件系统所存放的分区。比如：
root=/dev/block/mtd/by-name/linuxroot # rootfs 在名叫“linuxroot”的nand分区中
root=/dev/mmcblk0p1 # rootfs 在SD卡第一分区中
root=/dev/sda1 # rootfs 在U盘或者移动硬盘第一分区
root=LABEL=linuxroot # rootfs在标签为“linuxroot”分区，这个分区可能是SD卡、U盘或者移动硬盘。

Radxa Wiki - User contributions [en]

Rock/Linux Mainline

Rock/Booting Linux/zh cn