<section begin="History" />
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|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|1{{oldid|14113|2021/07/16}}| style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |First DESK release|-| style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |{{oldid|16992|2022/03/04}}| style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |DESK-MX6-L 3.0.0release|-! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fbededed; padding:5px; color:#000000"|Oct 20202023/04/11|! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fbededed; padding:5px; color:#000000"|New documentation layoutDESK-MX6-L 4.0.0 release
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<section end="History" /><section begin="Body" />
==Customizing the splash screen==
* [http://www.denx.de/wiki/DULG/UBootBitmapSupport U-Boot Bitmap Support]
=== Instructions Environment variables=== The following environment variables are used by U-Boot for loading a BMP image from the selected storage and displayed in the screen (read from framebuffer memory):
The following U* <code>splashimage</code>: RAM address where the BMP image is loaded. Please note that it must be a 32-Boot environment variables are requiredbit aligned address with a 0x2 offset (eg: 0x20000002)* <code>splashpos</code>: image position (eg: splashpos=m,m, for centering the image)* <code>splashsize</code>:image size in bytes (default value 0x400000)
* splashimage: RAM address where The following environment variables are used for reading the BMP splash image is loaded. Please note that it must be a 32-bit aligned address with a 0x2 offset (egfrom the network: 0x20000002)* loadsplash<code>splashfile</code>: comand for loading the BMP splash image from the storage device filename (edefault value is <code>splash_image.g flash memorybmp</code>) to RAM. This command is automatically run by U-Boot at startupbe read from the network* splashpos: <code>loadsplashfile</code> loads the splash file from ''tftp'' in order to store the image position (eg: splashpos=m,m, for centering in the image)internal storage device
==== Splash Then, the following command is used for reading the image in NOR SPI from the used storage device:* <code>loadsplash</code>: command for loading the BMP image from the storage device (e.g flash ====memory) to RAM. This command is automatically run by U-Boot when it executes <code>bootcmd</code>
===== U-Boot variables ==Splash image in NOR SPI flash === The following command is used to store in NOR SPI flash a BMP image loaded via tftp:
<pre>
loadsplash=run spi_loadsplash
spi_loadsplash=sf probe; sf read ${splashimage} 0xA00000 ${splashsize}
splashfile=splash_image.bmp
splashimage=0x20000002
splashpos=m,m
splashsize=0x400000
loadsplashfile=tftpboot ${loadaddr} axel/${splashfile}
spi_updatesplash=sf probe; sf erase 0xA00000 +${filesize}; sf write ${loadaddr} 0xA00000 ${filesize}
</pre>
===== Commands ===== The following commands are used so, it is possibile to read a splash image from ''tftp'' and store it in NOR SPI flash a BMP image loaded via tftp:
<pre>
</pre>
==== Splash image in NAND flash ====
===== UThe following command is used to store in NAND flash a BMP image loaded via tftp (please note that the NAND mtd partition for the splash image ('''nand-Boot variables =====splash''') is defined using the <code>mtdparts</code> parameter, and then referenced by the nand {erase,read,write} commands):
<pre>
mtdparts=mtdparts=gpmi-nand:2M(nand-SPL),6M(nand-uboot),1M(nand-env1),1M(nand-env2),1M(nand-fdt),1M(nand-spare),8M(nand-kernel),4M(nand-splash),-(nand-ubi)
loadsplash=run nand_loadsplash
nand_loadsplash=nand read ${splashimage} nand-splash
splashfile=splash_image.bmp
splashimage=0x20000002
splashpos=m,m
splashsize=0x400000
loadsplashfile=tftpboot ${loadaddr} axel/${splashfile}
nand_updatesplash=nand erase.part nand-splash; nand write ${loadaddr} nand-splash ${filesize}
</pre>
Please note that the NAND mtd partition for the so, it is possibile to read a splash image (from ''tftp'nand-splash''') is defined using the <code>mtdparts</code> parameter, and then referenced by the nand {erase,read,write} commands. ===== Commands ===== The following commands are used to store it in NAND flash a BMP image loaded via tftp:
<pre>
</pre>
==== Splash image in SD/eMMC ====
If an SD card or a eMMC device is used as boot device, the splashscreen image is directly loaded from the storage device.
===== UIn this example, the first partition -Boot variables =====FAT format - is used directly reading the ''${splashimage}'' BMP file.
In this example<pre>mmc_loadsplash=fatload mmc ${mmcdev}:1 ${loadaddr} ${splashfile}; cp.b ${loadaddr} ${splashimage} ${filesize}</pre> so, the first partition - FAT format - it is used possibile to read directly reading a splash image from the ''${splashimage}'' BMP file.eMMC partition:
<pre>
loadsplash=run mmc_loadsplash
splashfile=splash_image.bmp
splashimage=0x20000002
mmc_loadsplash=fatload mmc ${mmcdev}:1 ${loadaddr} ${splashfile}; cp.b ${loadaddr} ${splashimage} ${filesize}
</pre>