meta-wilc

Yocto Setup for AT91SAM Serise

linux4sam Link : https://github.com/linux4sam/meta-atmel

linux4sam change log  
*4.09 Kernel Folder changed : linux-yocto-cutom -> linux-at91  
*4.13 display is black when build set DISTRO = "poky"

Folder Tree

meta-(name)

recipes-(recipes name)

module-name.bb
module-name.bbappend
files-(additional folder)

additional_file

File

1. bb file

   Add new Module or Change upgrade Module.
   do not create duplicate file name.
   package name is mandatory value. yocto need package name when add new module.
   module is downloaded from web / ftp / git / etc... or use existing additional folder.

2. bbappend file

   Edit or Override module.
   It must have same folder tree about modules for edit or override.
   do patch or modify module. (can change bb value.)

3. additional file

   add file(script / config / etc...) or patch file.

Build

1. bb / bbappend parsing
2. download or fetch source from web(use bb)
3. checksum
4. patch(use bbappend)
5. configuration(use conf)
6. compile (make module)
7. generate rpm / deb / ipk
8. make image

Make new Module (example meta-wilc)

1. Create Meta directory (meta-wilc)
2. Create Recipe directory (recipes-wilc)
3. Create Module folder (demo)
4. Create *.bb file
   wilc1000-demo-init_1.0.bb
5. Create Additional patch directory (script)
6. add patch file wilc1000-demo-init

Override or Edit Module (example linux kernel)

1. Create Meta directory (meta-wilc)
2. Create Recipe driectory (recipes-kernel)
3. Create Module folder (linux)

• make same directory tree about edit or override module tree

4. Create *.bbappend file (linux-at91_3.10.bbappend)

• example is change source revision(git commit number).

Edit for Parsing

• (build_dir)/conf/bblayer.conf

BBLAYERS ?= " \
  ...
+  ${BSPDIR}/meta-wilc \

Edit for Configuration

• (build_dir)/conf/local.conf

input correct package name

IMAGE_INSTALL_append += " \
  hostapd \
  linux-firmware-atmel-wilc1000 \ 
  wilc1000 \
  wilc1000-demo-init"

• (meta dir)/conf/distro/poky.conf

CONNECTIVITY_CHECK_URIS = ""

Need Library

build-essential  
device-tree-compiler  
lzma  
lzop  
u-boot-tools  
libncurses5-dev:amd64  
diffstat  
gawk  
chrpath  
libsdl1.2-dev  
pandoc  
texinfo  

Reference

https://www.yoctoproject.org/
http://hyuns-study.blogspot.kr/2013/09/yocto.html