(Created page with "Android tablets come with proved themselves as a severe contender in order to Apple iPad. iPad coming from the Apple stable, was never going in order to come cheap. One may ar...")
 
 
(3 intermediate revisions by one user not shown)
Line 1: Line 1:
−
Android tablets come with proved themselves as a severe contender in order to Apple iPad. iPad coming from the Apple stable, was never going in order to come cheap. One may argue that your needs attain just what you pay for. Nevertheless I disagree whenever it comes to Apple treatments. No doubt they are perfect for the simplicity they provide and needless to say the particular half bitten apple logo adds to be able to the status of the actual owner. Yet not just about everyone typically is seeking simplicity and / or brands as well as certainly not everyone has deep pockets. A couple of consumers may well be more tech savvy and would need a couple extra qualities that a layman won’t be capable to be able to digest. Sylvania Android tablet looks the particular ideal match for them!
+
 
−
Android tablets such as the actual Sylvania Android tablet comes with the Google Android operating body. Because it is actually with all open source code treatments, Android was a instant hit! Also the actual free of charge tag on the operating body was actually an added advantage. The actual android OS has underwent several changes since its initial release, codenamed “Cupcake” version 1.5. The latest version typically is nicknamed “Ice-cream Sandwich” and in addition its version is actually 4.0.
+
== Compiling U-Boot with Device Tree Support for the Raspberry Pi ==
−
Main manufacturers such as Samsung not to mention Motorola started cranking about tablets based found on the Android Operating body. You had android tablets with all form of varying configurations. The actual differentiating factors being processing force, screen size, amount of RAM, storage capacity (inbuilt along with expandable), the actual number of ports and even last but yet certainly not the actual least the actual android version powering the actual tablet. The actual 10 inch android tablet emerged as the actual ideal size tablet for usability reasons.
+
 
−
One manufacturer of electronic gadgets that has caught the fancy of many a gadget enthusiasts typically is Sylvania. Sylvania moreover has its own range of android tablets with different android flavors and in addition various screen sizes. Among the highly rated treatments by them is the Sylvania Android tablet SYTAB10MT.
+
=== Prerequisites ===
−
The amount of RAM not to mention the in-built storage capacity of the Sylvania Android tablet would be a turn off for a bit of. But yet in the event you search at the price point at which it is selling you can be surprised. The actual Sylvania Android tablet sells for simply $189 such as shipping costs. Honestly, a 10 inch android tablet at which price point is a steal!
+
 
−
Sylvania Android tablet conclusion
+
To compile the U-Boot bootloader for the Raspberry Pi, you must first have an ARM cross compiler installed. I use gcc-4.7.3-arm-linux-gnueabi that comes with Ubuntu 14.04. To install the compiler run:
−
The particular most surprising feature of the actual Sylvania Android tablet typically is the inclusion of 2 fully fledged USB 2.0 ports. You won’t discover this feature throughout many of the actual main brands out generally there. Furthermore 2 micro SD card slots in 1 tablet is unheard for and in addition Sylvania Android tablet is actually the actual first specific in order to introduce such a novel feature. And even in the event you are generally thinking that the actual performance of the particular Sylvania Android tablet will be sluggish afterward your needs are really mistaken. The particular ARM 11 processor is blazing fast to handle most of the particular mundane jobs with multitasking capability. All the in just about all, the particular Sylvania Android tablet is a deal maker at the actual price point it is selling.
+
 
−
A different perfect Sylvania Android tablet product can certainly be viewed out here moreover [http://sylvaniatablet.org Sylvania Tablet]
+
<PRE>
 +
apt-get install gcc-arm-linux-gnueabi
 +
</PRE>
 +
 
 +
=== U-Boot ===
 +
 
 +
Raspberry Pi support in the current mainline U-Boot is functional, but excludes support for USB. As the ethernet port on the Raspberry Pi is connected to the Broadcom SoC via USB, no support for USB not only effects your use of USB input devices such as a keyboard, USB storage devices (booting from USB thumb drive) but also Network (TFTP loads).  
 +
 
 +
It is understood Stephen Warren is working on getting USB support into the mainline U-Boot repository.  
 +
 
 +
=== Mainline ===
 +
 
 +
To download and extract the latest mainline version of U-Boot:
 +
 
 +
<PRE>
 +
wget ftp://ftp.denx.de/pub/u-boot/u-boot-latest.tar.bz2
 +
tar -xjf u-boot-latest.tar.bz2
 +
cd u-boot-2014.04
 +
</PRE>
 +
 
 +
=== Stephen Warren's work ===
 +
 
 +
Alternatively, if you require USB support, use Stephen Warren GIT repository:
 +
 
 +
<PRE>
 +
git clone git://github.com/swarren/u-boot.git
 +
git checkout -b rpi_dev origin/rpi_dev
 +
</PRE>
 +
 
 +
=== Compiling ===
 +
 
 +
Now cross compile U-Boot using the Raspberry Pi Model B configuration:
 +
 
 +
<PRE>
 +
make CROSS_COMPILE=arm-linux-gnueabi- distclean
 +
make CROSS_COMPILE=arm-linux-gnueabi- rpi_b_config
 +
make CROSS_COMPILE=arm-linux-gnueabi- u-boot.bin
 +
</PRE>
 +
 
 +
Once compiled, u-boot.bin can be copied to your SD Card. Edit the config.txt file to include the following line:
 +
 
 +
<PRE>
 +
kernel=u-boot.bin
 +
</PRE>
 +
 
 +
=== Prepared Image ===
 +
 
 +
Below is a prepared FAT16 image. It can be restored using the [http://sourceforge.net/projects/win32diskimager/files/latest/download Win32 Disk Imager]
 +
 
 +
* [http://wiki.beyondlogic.org/prebuilt/raspberrypi_u-boot.zip Raspberry Pi U-Boot] 4.5Mbytes <I>(Using U-Boot 2014.07-rc3-gd4614d4 (Jun 14 2014 - 01:23:23))</I>
 +
 
 +
<BR>

Latest revision as of 12:54, 21 June 2014

Compiling U-Boot with Device Tree Support for the Raspberry Pi

Prerequisites

To compile the U-Boot bootloader for the Raspberry Pi, you must first have an ARM cross compiler installed. I use gcc-4.7.3-arm-linux-gnueabi that comes with Ubuntu 14.04. To install the compiler run: 

apt-get install gcc-arm-linux-gnueabi

U-Boot

Raspberry Pi support in the current mainline U-Boot is functional, but excludes support for USB. As the ethernet port on the Raspberry Pi is connected to the Broadcom SoC via USB, no support for USB not only effects your use of USB input devices such as a keyboard, USB storage devices (booting from USB thumb drive) but also Network (TFTP loads).

It is understood Stephen Warren is working on getting USB support into the mainline U-Boot repository.

Mainline

To download and extract the latest mainline version of U-Boot: 

wget ftp://ftp.denx.de/pub/u-boot/u-boot-latest.tar.bz2
tar -xjf u-boot-latest.tar.bz2
cd u-boot-2014.04

Stephen Warren's work

Alternatively, if you require USB support, use Stephen Warren GIT repository: 

git clone git://github.com/swarren/u-boot.git
git checkout -b rpi_dev origin/rpi_dev

Compiling

Now cross compile U-Boot using the Raspberry Pi Model B configuration: 

make CROSS_COMPILE=arm-linux-gnueabi- distclean
make CROSS_COMPILE=arm-linux-gnueabi- rpi_b_config
make CROSS_COMPILE=arm-linux-gnueabi- u-boot.bin

Once compiled, u-boot.bin can be copied to your SD Card. Edit the config.txt file to include the following line: 

kernel=u-boot.bin

Prepared Image

Below is a prepared FAT16 image. It can be restored using the Win32 Disk Imager


Retrieved from "http://wiki.beyondlogic.org/index.php?title=Compiling_uBoot_RaspberryPi&oldid=512"