Differences

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--- en:c2_bootlogo [2016/06/30 15:38]
joy.cho [Additional instruction for VU7+/VU7 power]
+++ en:c2_bootlogo [2017/05/15 08:40] (current)
odroid [How to replace boot logo with your custom image]
@@ Line 7: / Line 7: @@
 <code>
-Image Format : 24-bit Windows BMP image or 24-bit Windows Gzipped BMP image
+Image Format : 24-bit Windows BMP image or 24-bit Windows Gzipped BMP image (Without meta-data)
 Image Size : 1280 by 720
-Bit Depth : 24bpp
+Color Depth : 24bpp
 The file name should be 'boot-logo.bmp' or 'boot-logo.bmp.gz'
+</code>
+Here is the sample bmp file.
+{{:en:boot-logo.bmp.gz|}}
+We recommend using GIMP or KolourPaint.
+If you're using "GIMP", keep the options as following.
+<code>
+- Export as Windows BMP
+- Compatibility Options : Do not write Color Space Information
+- Advanced Options : 24 bits
+- Name : "boot-logo.bmp"
+</code>
+If you're using KolourPaint, refer to the following.
+<code>
+- Save Image as
+- Filter : Windows BMP image
+- Convert to : 24-bit Color
+</code>
+And please keep the size of your bmp file must be under 2MB because the logo partition is limited to 2MB.
+Gzip BMP format is supported, so if the size is over 2MB, you can use bmp.gz file.
+<code>
+$ gzip boot-logo.bmp
+$ ls
+boot-logo.bmp.gz
 </code>
@@ Line 19: / Line 48: @@
 <WRAP left round tip 80%>
-  * Image scaling on u-boot has NOT been released yet. The version will be specified here after release.
+  * Logo scaling with 1280x720 bmp image is available with Android release, v1.9 or higher version.
+  * On Ubuntu, it will be released.
+  * You can show boot logo of 1280x720 bmp file with the current or old uboot but, to support another resolution of logo, you need to adjust bmp file size if you want to display native size of logo.
 </WRAP>
 ===== How to replace boot logo with your custom image =====
@@ Line 45: / Line 76: @@
 $ fastboot flash logo boot-logo.bmp
 </code>
+<WRAP center round important>
+If you will use bmp data on logo partition, make sure there is NO boot-logo.bmp.gz file on your VFAT area, because U-Boot checks very first if there is boot-logo.bmp.gz on VFAT area and then check logo partition.\\
+You need this special cable to access the U-boot command.\\
+[[http://www.hardkernel.com/main/products/prdt_info.php?g_code=G134111883934]]
+You also need a normal micro-USB cable for the fastboot/adb interface between C2 and your host PC too.\\
+[[http://www.hardkernel.com/main/products/prdt_info.php?g_code=G134114594259]]
+</WRAP>
 === Ubuntu ===
@@ Line 71: / Line 113: @@
 </code>
-===== Additional instruction for VU7+/VU7 power and signal type =====
+===== [Optional] Additional instruction for VU7+/VU7 power and signal type =====
 To turn on USB Host power on uboot stage for power of VU7+/VU7, you should add one command, **usb pwren** after showlogo command in boot.ini.
@@ Line 86: / Line 128: @@
-===== How to use the custom image with Native resolution like 1024x600 or 800x480 except 1280x720 =====
+===== [Optional] How to use the custom image with Native resolution like 1024x600 or 800x480 except 1280x720 =====
 If you want to use a native resolution of bmp image like 1920x1080, 1024x600 (for VU7+) or 800x480 (for VU7) except 1280x720, please set the arg[2]/arg[3] of **showlogo** command as following.