Exibir código-fonte para Cubieboard A20 - Personalize e compile o kernel

= Boot =
Obtenha o bootloader:
 wget http://area31.net.br/downloads/boot-cubieboard2.tar.bz2

 mv /boot /boot-old && tar xjvpf boot-cubieboard2.tar.bz2 -C /

= Compilação =
== Obtenha o MKIMAGE do u-boot ==
=== Obtenha o código fonte ===
 cd /opt && git clone git://gitorious.org/u-boot-mkimage/u-boot-mkimage.git

=== Compile e instale ===
 cd u-boot-mkimage && make

 cd /usr/bin && ln -s /opt/u-boot-mkimage/mkimage mkimage


== Obtenha o source do kernel 3.4 via GIT ==
 git clone -b sunxi-3.4 https://github.com/linux-sunxi/linux-sunxi.git

== Configure o kernel ==
=== Escolha o modelo ===
==== Modelo A20 (Cubieboard2 e CubieTruck) ====
 make sun7i_defconfig

=== obtenha o .config do area31 ===
 wget http://area31.net.br/downloads/config-cubieboard2.gz

 zcat config-cubieboard2.gz > /usr/src/linux/.config

 make oldconfig

=== Personlize o kernel ===
 make menuconfig

== Compile o kernel ==
 make uImage modules

=== ATENÇÃO ===
Algumas versões do kernel Linux retornam erro ao tentar gerar a uImage. Ex:

<pre>
kankin-cubie-a20 linux # make uImage modules                                                                                                                                                                                                 
  CHK     include/config/kernel.release
  CHK     include/generated/uapi/linux/version.h
  CHK     include/generated/utsrelease.h
make[1]: 'include/generated/mach-types.h' is up to date.
  CALL    scripts/checksyscalls.sh
  CHK     include/generated/compile.h
  CHK     kernel/config_data.h
  Kernel: arch/arm/boot/Image is ready
  Kernel: arch/arm/boot/zImage is ready
multiple (or no) load addresses: 
This is incompatible with uImages
Specify LOADADDR on the commandline to build an uImage
/storage01/usr/src/linux-sunxi/arch/arm/boot/Makefile:79: recipe for target 'arch/arm/boot/uImage' failed
make[1]: *** [arch/arm/boot/uImage] Error 1
/storage01/usr/src/linux-sunxi/arch/arm/Makefile:305: recipe for target 'uImage' failed
make: *** [uImage] Error 2
</pre>

Para sanar tal problema, tente gerar a imagem especificando a variável ${LOADADDR}:

 make uImage LOADADDR=0x70008000


== Instale o kernel ==
 cp arch/arm/boot/uImage /boot/

 make modules_install


[[Categoria:Embarcados]]
[[Categoria:HardwareOpensource]]
[[Categoria:SoftwareOpensource]]
[[Categoria:Linux]]
[[Categoria:KnowledgeBase]]


fonte:
 http://linux-sunxi.org/Linux_Kernel#Compilation