drm移植

libdrm下载

解压后进入libdrm-2.4.104目录 ，参考官网如下图操作即可。

mkdir build
mkdir install
创建cross_file.txt
meson --prefix=/root/work/code/software/drm/libdrm-2.4.104/install  --cross-file=../cross_file.txt -D radeon=true -Dudev=true && ninja
njnja install

在cross_file.txt中指定编译器 

[binaries]
c = 'aarch64-linux-gnu-gcc'
cpp = 'aarch64-linux-gnu-gcc'
ar = 'aarch64-linux-gnu-ar'
strip = 'aarch64-linux-gnu-strip'

[host_machine]
system = 'linux'
cpu_family = 'arm'
cpu = 'armv7'
endian = 'little'

[build_machine]
system = 'linux'
cpu_family = 'x86_64'
cpu = 'x86_64'
endian = 'little'

 

使用modetest命令前，先停止使用/dev/dri/card0节点的应用程序。

可以使用systemctl命令，停止桌面显示服务，然后使用modete