28. S5PV21 망고210 커널 로고 변경하기

아래 글에서 잘못 된 부분이 있으면,
http://cafe.naver.com/embeddedcrazyboys
문의 해 주세요.

1. 커널 로고 추가하기
1. 변경프로그램 설치

root@ubuntu:/home/jooyoung# apt-get install netpbm Reading package lists... Done Building dependency tree        Reading state information... Done The following packages were automatically installed and are no longer required:  linux-headers-2.6.32-33-generic linux-headers-2.6.32-33 Use 'apt-get autoremove' to remove them. The following extra packages will be installed:  libnetpbm10 The following NEW packages will be installed:  libnetpbm10 netpbm 0 upgraded, 2 newly installed, 0 to remove and 5 not upgraded. Need to get 1,285kB of archives. After this operation, 4,940kB of additional disk space will be used. Do you want to continue [Y/n]? y Get:1 http://us.archive.ubuntu.com/ubuntu/ lucid/main libnetpbm10 2:10.0-12.1ubuntu1 [67.4kB] Get:2 http://us.archive.ubuntu.com/ubuntu/ lucid/main netpbm 2:10.0-12.1ubuntu1 [1,218kB] Fetched 1,285kB in 8s (154kB/s)                                                 Selecting previously deselected package libnetpbm10. (Reading database ... 179732 files and directories currently installed.) Unpacking libnetpbm10 (from .../libnetpbm10_2%3a10.0-12.1ubuntu1_i386.deb) ... Selecting previously deselected package netpbm. Unpacking netpbm (from .../netpbm_2%3a10.0-12.1ubuntu1_i386.deb) ... Processing triggers for man-db ... Setting up libnetpbm10 (2:10.0-12.1ubuntu1) ... Setting up netpbm (2:10.0-12.1ubuntu1) ... Processing triggers for libc-bin ... ldconfig deferred processing now taking place root@ubuntu:/home/jooyoung#

1. 확장자별 PPM 변환 프로그램 명령어

GIF : giftopnm PNG : pngtopnm BMP : bmptopnm JPG : jpegtopnm

2. 커널에 추가할 이미지 정보

이름 : CRG_logo 해상도 : 800X480 확장자 : JPG

2. 변환하기

1. JPG파일 PPM으로 변경

root@ubuntu:/home/jooyoung/Desktop# jpegtopnm CRZ_loog.jpg | pnmtoplainpnm > imgout1.ppm jpegtopnm: WRITING PPM FILE

JPG 파일을 PPM으로 변경

root@ubuntu:/home/jooyoung/Desktop# pnmquant -fs 223 imgout1.ppm > imgout2.ppm pnmcolormap: making histogram... pnmcolormap: 2952 colors found pnmcolormap: choosing 223 colors... pnmremap: 221 colors found in colormap

PPM을 16bit로 변경

root@ubuntu:/home/jooyoung/Desktop# pnmnoraw imgout2.ppm > logo_XXX_clut224.ppm

PPM을 PAW파일로 변경(XXX에 아무 이름을 해주세요 설명하기 쉽게 저는 joo로 하겠습니다.

root@ubuntu:/home/jooyoung/Desktop# cp logo_joo_clut224.ppm <path to kernel> /drvers/vido/logo/

생성한 “logo_joo_clut224.ppm”을 “<path to kernel>/drvers/vido/logo/ “에 복사해줍니다.

2. kernel수정하기
1. 확인

root@ubuntu: <path to kernel>/drivers/video/logo# ls

clut_vga16.ppm             logo_linux_clut224.ppm   logo_spe_clut224.ppm Kconfig                    logo_linux_mono.pbm      logo_sun_clut224.ppm logo_blackfin_clut224.ppm  logo_linux_vga16.ppm     logo_superh_clut224.ppm logo_blackfin_vga16.ppm    logo_m32r_clut224.ppm    logo_superh_mono.pbm logo.c                     logo_mac_clut224.ppm     logo_superh_vga16.ppm logo_dec_clut224.ppm       logo_parisc_clut224.ppm  Makefile logo_joo_clut224.ppm       logo_sgi_clut224.ppm

2. Kconfig 변경

root@ubuntu: <path to kernel>/drivers/video/logo# vi Kconfig

config LOGO_JOO_CLUT224 bool "224-color joo Linux logo" depends on LOGO default y

Kconfig에 위의 내용을 추가해줍니다.

3. Makefile 변경

root@ubuntu: <path to kernel>/drivers/video/logo# vi Makefile

obj-$(CONFIG_LOGO_JOO_CLUT224)                  += logo_joo_clut224.o

Makefile에 위의 내용을 추가해 줍니다.

4. linux_logo.h 변경

root@ubuntu:<path to kernel>/include/linux# vi linux_logo.h

extern const struct linux_logo logo_joo_clut224;

Linux_logo.h에 위의 내용 추가 *참고 2.6커널부터 extern이 logo.c에서 linux_logo.h로 변경됨*

5. logo.c 변경

root@ubuntu: <path to kernel>/drivers/video/logo# vi logo.c

#ifdef CONFIG_LOGO_XXX_CLUT224 logo = &logo_joo_clut224; #endif

Logo.c에 위의 내용을 추가

6. make menuconfig

root@ubuntu: <path to kernel>/ # make menuconfig

Device Driversphic supportsole display driver supportFramebuffer Console support 체크.

사진 설명

Device Drivers  Graphic support  Bootup logo 체크  224-color joo Linux logo 체크

사진 설명

Save 후 EXIT

3. 최종 확인 boot logo

Kernel build를 한 후에 zImag를 망고에 boot시켜줍니다.

확인결과 아래와 같이 logo가 변경되서 나옵니다.