KernelDriverProgrammingCourse2015/PreparationDay2: Difference between revisions
Jump to navigation
Jump to search
mNo edit summary |
|||
| (4 intermediate revisions by 2 users not shown) | |||
| Line 4: | Line 4: | ||
and work on writing our first own driver. This builds on top of the | and work on writing our first own driver. This builds on top of the | ||
[[KernelDriverProgrammingCourse2015/Preparations | preparations]] and | [[KernelDriverProgrammingCourse2015/Preparations | preparations]] and | ||
[[KernelDriverProgrammingCourse2015/OutlineDay1 | | [[KernelDriverProgrammingCourse2015/OutlineDay1 | activities]] from the | ||
first course day. | first course day. | ||
=== Preparation === | === Preparation === | ||
If you've not done so already first walk through the [[KernelDriverProgrammingCourse2015/Preparations | preparations from day 1]. | If you've not done so already first walk through the [[KernelDriverProgrammingCourse2015/Preparations | preparations from day 1]]. | ||
Since building a kernel from scratch can take a long time, it is a good idea to build the kernel beforehand: | Since building a kernel from scratch can take a long time, it is a good idea to build the kernel beforehand: | ||
| Line 19: | Line 19: | ||
2) Update your kernel tree to my latest sunxi-wip branch | 2) Update your kernel tree to my latest sunxi-wip branch | ||
git remote update | git remote update | ||
git checkout -B sunxi-wip | git checkout -B sunxi-wip origin/sunxi-wip | ||
3) Make sure that you've the latest kernel configuration: | 3) Make sure that you've the latest kernel configuration: | ||
Latest revision as of 18:14, 5 August 2015
Introduction
For the second day of this course we will actually be building our own kernel and work on writing our first own driver. This builds on top of the preparations and activities from the first course day.
Preparation
If you've not done so already first walk through the preparations from day 1.
Since building a kernel from scratch can take a long time, it is a good idea to build the kernel beforehand:
1) cd into the linux directory:
cd linux
2) Update your kernel tree to my latest sunxi-wip branch
git remote update git checkout -B sunxi-wip origin/sunxi-wip
3) Make sure that you've the latest kernel configuration:
wget https://fedorapeople.org/~jwrdegoede/kernel-driver-programming/kernel-config mv kernel-config .config
4) And build the kernel
make -j4 ARCH=arm CROSS_COMPILE=arm-linux-gnu- oldconfig make -j4 ARCH=arm CROSS_COMPILE=arm-linux-gnu- zImage dtbs
This will take a while, once this is done (assuming there are no errors), you are all set for the second day of the course.