Difference between revisions of "Linux Boot Logo"

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m (→‎Create an image to suitable format (C include file))
(→‎Create an image to suitable format (C include file))
 
(8 intermediate revisions by the same user not shown)
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===Create an image to suitable format (C include file)===
 
===Create an image to suitable format (C include file)===
−
# create a new image fitting the size of your LCD (320x240 or 480x272), with [http://www.gimp.org/ The Gimp] (for example).
+
# create a new image fitting the size of your LCD (320x240, 480x272 or 800x480), with [http://www.gimp.org/ The Gimp] (for example).
 
# save it in '''PPM RAW''' file format, let's say ''my_boot_logo.ppm''
 
# save it in '''PPM RAW''' file format, let's say ''my_boot_logo.ppm''
 
# install Netpbm package: <pre>$ sudo apt-get install netpbm </pre>
 
# install Netpbm package: <pre>$ sudo apt-get install netpbm </pre>
 
# reduce the number of colors in your image to 224: <pre class="host">$ ppmquant 224 my_boot_logo.ppm > my_boot_logo_224.ppm</pre>
 
# reduce the number of colors in your image to 224: <pre class="host">$ ppmquant 224 my_boot_logo.ppm > my_boot_logo_224.ppm</pre>
−
# convert it to PPM ASCII format: <pre class="host">$ pnmnoraw my_boot_logo_224.ppm > my_boot_logo_ascii_224.ppm</pre>
+
# convert it to PPM ASCII format (if ''pnmnoraw'' is not available on your distribution (ex: LUbuntu 17.10), try with ''pnmtoplainpnm''): <pre class="host">$ pnmnoraw my_boot_logo_224.ppm > my_boot_logo_ascii_224.ppm</pre>
 
# get the armadeus envt variables: <pre class="host">$ make shell_env && source armadeus_env.sh</pre>
 
# get the armadeus envt variables: <pre class="host">$ make shell_env && source armadeus_env.sh</pre>
 
# copy the PPM to ''$ARMADEUS_LINUX_DIR/drivers/video/logo/'' directory '''with a name ending with _clut224.ppm''': <pre>$ cp my_boot_logo_ascii_224.ppm $ARMADEUS_LINUX_DIR/drivers/video/logo/logo_custom_clut224.ppm</pre>
 
# copy the PPM to ''$ARMADEUS_LINUX_DIR/drivers/video/logo/'' directory '''with a name ending with _clut224.ppm''': <pre>$ cp my_boot_logo_ascii_224.ppm $ARMADEUS_LINUX_DIR/drivers/video/logo/logo_custom_clut224.ppm</pre>
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===Add your file to Linux build system===
 
===Add your file to Linux build system===
−
# If you have overwritten ''$ARMADEUS_LINUX_DIR/drivers/video/logo/logo_armadeus_clut224.ppm'' with your own logo at the previous stage, then you can jump to [[#Recompile_.26_install_kernel|the following stage]]; otherwise:
+
# If you have overwritten ''$ARMADEUS_LINUX_DIR/drivers/video/logo/logo_armadeus_clut224.ppm'' with your own logo at the previous stage, then you can jump to [[#Recompile_.26_install_kernel|the next step]]; otherwise:
 
# Edit ''$ARMADEUS_LINUX_DIR/drivers/video/logo/Makefile''
 
# Edit ''$ARMADEUS_LINUX_DIR/drivers/video/logo/Makefile''
−
# Add it your logo file name at line 16: <pre> obj-$(CONFIG_LOGO_ARMADEUS_CLUT224)    += logo_custom_clut224.o</pre>
+
# Put it your logo file name at line 18 (replace current one): <pre> obj-$(CONFIG_LOGO_ARMADEUS_CLUT224)    += logo_custom_clut224.o</pre>
 
# Edit ''$ARMADEUS_LINUX_DIR/drivers/video/logo/logo.c''
 
# Edit ''$ARMADEUS_LINUX_DIR/drivers/video/logo/logo.c''
−
# Add it your logo C struct name at line 36: <source lang="C">extern const struct linux_logo logo_custom_clut224;</source>
+
# Add it your logo C struct name at line 39: <source lang="C">extern const struct linux_logo logo_custom_clut224;</source>
−
# Add it your logo C struct name at line 110:  
+
# Put it your logo C struct name at line 122 (replace current one):  
−
<source lang="C">#ifdef CONFIG_LOGO_ARMADEUS_CLUT224 <br><br>       
+
<source lang="C">
 +
#ifdef CONFIG_LOGO_ARMADEUS_CLUT224
 
     /* Armadeus Linux logo */
 
     /* Armadeus Linux logo */
 
     logo = &logo_custom_clut224;
 
     logo = &logo_custom_clut224;
 
#endif
 
#endif
−
</source>
+
</source>
  
 
===Recompile & install kernel===
 
===Recompile & install kernel===
 
*Make sure that the "Armadeus Logo" option is selected in:
 
*Make sure that the "Armadeus Logo" option is selected in:
 
<pre class="host">
 
<pre class="host">
−
$ make linux26-menuconfig
+
$ make linux-menuconfig
 
</pre>
 
</pre>
 
<pre class="config">
 
<pre class="config">
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*Then recompile your kernel:
 
*Then recompile your kernel:
 
<pre class="host">
 
<pre class="host">
−
  $ make linux26
+
  $ make linux
 
</pre>
 
</pre>
 
and install it on your board.
 
and install it on your board.
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===Deactivate remaining cursor===
 
===Deactivate remaining cursor===
−
It may be a remaining cursor at the left upper corner of the screen. Indeed virtual console cursor is activated by default in Linux. To deactivate it at boot stage, you will have to do:
+
It may be a remaining cursor at the left upper corner of the screen. Indeed virtual console cursor is activated by default in Linux. To deactivate it at boot stage, you will have to:
 +
* on recent kernels (3.8+), follow tips [[FrameBuffer#Tips|here]]
 +
* otherwise:
 
# Edit source file $ARMADEUS_LINUX_KERNEL/drivers/char/vt.c
 
# Edit source file $ARMADEUS_LINUX_KERNEL/drivers/char/vt.c
−
# Near line 1600, in function ''reset_terminal()'', change <source lang="c">vc->vc_deccm = 1;</source> with <source lang="c">vc->vc_deccm = 0;</source>
+
# Near line 1620, in function ''reset_terminal()'', change <source lang="c">vc->vc_deccm = 1;</source> with <source lang="c">vc->vc_deccm = 0;</source>
 
# recompile and reflash your kernel
 
# recompile and reflash your kernel
 
After this modification, at any moment, you can get your blinking cursor back with:
 
After this modification, at any moment, you can get your blinking cursor back with:
Line 67: Line 70:
 
* http://netpbm.sourceforge.net/doc/pnmquant.html
 
* http://netpbm.sourceforge.net/doc/pnmquant.html
 
* [http://www-curri.u-strasbg.fr/documentation/calcul/doc/ProPack/3SP1/docs/man_html/man4/console_codes.4.html Linux console ESC sequences]
 
* [http://www-curri.u-strasbg.fr/documentation/calcul/doc/ProPack/3SP1/docs/man_html/man4/console_codes.4.html Linux console ESC sequences]
 +
* [[U-Boot_Splash_Screen| U-Boot Splashscreen]]
 +
 +
[[Category: Boot Logo]]

Latest revision as of 10:28, 21 June 2018

On this page we will explain you how to change the Boot Logo/Screen of Linux.

By default the following screen is displayed on your LCD:

Default Boot.png

Create an image to suitable format (C include file)

  1. create a new image fitting the size of your LCD (320x240, 480x272 or 800x480), with The Gimp (for example).
  2. save it in PPM RAW file format, let's say my_boot_logo.ppm
  3. install Netpbm package: 
    $ sudo apt-get install netpbm
  4. reduce the number of colors in your image to 224: 
    $ ppmquant 224 my_boot_logo.ppm > my_boot_logo_224.ppm
  5. convert it to PPM ASCII format (if pnmnoraw is not available on your distribution (ex: LUbuntu 17.10), try with pnmtoplainpnm): 
    $ pnmnoraw my_boot_logo_224.ppm > my_boot_logo_ascii_224.ppm
  6. get the armadeus envt variables: 
    $ make shell_env && source armadeus_env.sh
  7. copy the PPM to $ARMADEUS_LINUX_DIR/drivers/video/logo/ directory with a name ending with _clut224.ppm: 
    $ cp my_boot_logo_ascii_224.ppm $ARMADEUS_LINUX_DIR/drivers/video/logo/logo_custom_clut224.ppm
  8. Linux will automatically convert your .ppm to a .c file, after you have added it to the build system, using the $ARMADEUS_LINUX_DIR/scripts/pnmtologo script. This is the purpose of the next step.

Add your file to Linux build system

  1. If you have overwritten $ARMADEUS_LINUX_DIR/drivers/video/logo/logo_armadeus_clut224.ppm with your own logo at the previous stage, then you can jump to the next step; otherwise:
  2. Edit $ARMADEUS_LINUX_DIR/drivers/video/logo/Makefile
  3. Put it your logo file name at line 18 (replace current one): 
     obj-$(CONFIG_LOGO_ARMADEUS_CLUT224)     += logo_custom_clut224.o
  4. Edit $ARMADEUS_LINUX_DIR/drivers/video/logo/logo.c
  5. Add it your logo C struct name at line 39: 
    extern const struct linux_logo logo_custom_clut224;
  6. Put it your logo C struct name at line 122 (replace current one): 
#ifdef CONFIG_LOGO_ARMADEUS_CLUT224
    /* Armadeus Linux logo */
    logo = &logo_custom_clut224;
#endif

Recompile & install kernel

  • Make sure that the "Armadeus Logo" option is selected in:
$ make linux-menuconfig

Device Drivers  --->
    Graphics support  --->
        [*] Bootup logo  --->
            [*]   224-color Armadeus Linux logo
  • Then recompile your kernel:
 $ make linux

and install it on your board.

  • Restart your board and you should see your image:

Custom Boot Logo with login.png

Remove Login from framebuffer terminal

  1. On your target, edit /etc/inittab
  2. Comment line 28: 
    #tty1::respawn:/sbin/getty 38400 tty1
  3. save it and restart your system

Deactivate remaining cursor

It may be a remaining cursor at the left upper corner of the screen. Indeed virtual console cursor is activated by default in Linux. To deactivate it at boot stage, you will have to:

  • on recent kernels (3.8+), follow tips here
  • otherwise:
  1. Edit source file $ARMADEUS_LINUX_KERNEL/drivers/char/vt.c
  2. Near line 1620, in function reset_terminal(), change 
    vc->vc_deccm		= 1;
    with 
    vc->vc_deccm		= 0;
  3. recompile and reflash your kernel

After this modification, at any moment, you can get your blinking cursor back with: 

# echo -e '\033[?25h' > /dev/tty1
# echo 1 > /sys/class/graphics/fbcon/cursor_blink

Links

Retrieved from "http://armadeus.org/wiki/index.php?title=Linux_Boot_Logo&oldid=14589"