This post intends to gather all the information you need to start a project based on Buildroot. It relies on the but applies to other versions. This post is largely inspired from, with a focus towards our platforms and Freescale-specific packages. Introduction When choosing a build system for an embedded Linux project, many options are available such as: Yocto/OpenEmbedded, PTXdist, Buildroot, LTIB, OpenBricks, OpenWRT, etc However nowadays the two most popular ones are: • Yocto/OpenEmbedded • Builds a complete Linux distribution with binary packages. • Most powerful option but also the most complex.

• Officially supported by Freescale. • Buildroot • Builds a root filesystem image, no binary packages. • Much simpler to use, understand and modify. Although Freescale is only supporting Yocto, Buildroot offers the same level of support in most instances in regards to the Freescale-specific packages. For instance, the Buildroot 2015.11 release is using the exact same Freescale packages as the Fido release of Yocto. Gary we have a unique situation regarding using the newer kernels.

In this case 3.14.52. We write drivers for the GPU and IPU blocks. For example on the i.MX6Q kernel version 3.0.35 our drivers run fine.

Please note our drivers are run user space completely and Linux is only a development platform for us. We run on many other operating systems. I’m trying to run the same drivers we made for i.MX6Q using Linux kernel version 3.14.52. We can control the IPU but cannot talk to the GPU.

If you have GStreamer already installed from packages, it is strongly recommended that you find newer packages instead of installing from source, or upgrade to a distro version that ships newer packages. Installing from source into one prefix with distro packages in another prefix can cause problems if it's not done right,.

The GPU registers are zero’s and we suspect GPU power is off. Please note our Linux config has all IPU, HDMI, GPU, VPU etc drivers removed from it. We suspect the issue is versions 3.14.0 and newer changed the way power is managed. It now calls a function called imx_gpc_power_up_pu() instead of regulator calls. I can’t seem to find the code for that function strangly, but I suspect it sets PGC/GPC registers. When we try our code to take over PGC/GPC registers ourselves we get get bus error. We believe this is due to the ‘supervisor’ features of the i.MX6Q and we don’t want to fuddle with that in Linux.

Our PGC/GPC code does work on other operating systems. So my question, is there a easy way to power up the GPU/VPU rail similar to what imx_gpc_power_up_pu() must be doing in the absence of all of those GPU/VPU/IPU drivers? Our goal being we can run our drivers on 3.14. Install Modem Bolt Di Windows Xp. 52 for i.MX6Q and i.MX6QP. * I do CLEAN before each such change, so that shall be fine. * BR2_ARM_ENABLE_VFP was not accessible via menuconfig.

I had to specify it manually in the config file. * What about ABI?

Shall I choose AEABIhf? * I tried to compile the system with the parameters you have pointed out (but with regular aeabi, not aeabihf). Compilation succeeded, but I am not sure if the image has real HF turned on.

Hi Algirdas, The config I gave is to add to your defconfig, you can’t just select them afterwards. Having it in defconfig takes care of all the default dependencies.

However the flags I gave are for the latest version of Buildroot, which version are you running on? You should use EABIhf for sure. You can check the executable with file: $ file target/bin/busybox target/bin/busybox: setuid ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux- armhf.so.3, for GNU/Linux 2.6.32, BuildID[sha1]=72ce721857ac32db70762f4c73956aeb8ae82d78, stripped Regards, Gary •.

Advertisement Windows-based fonts don’t appear by default on Linux-based systems like Ubuntu. In most cases, this isn’t a huge problem, but if you want to improve compatibility between word processors, then it might be useful to have Microsoft fonts on your Ubuntu PC. For instance, you might be a student, using a Windows PC at college, and your own Ubuntu device at home — or vice versa. You might have other versions for importing Microsoft fonts into Ubuntu, though. Perhaps you want the Verdana or Times New Roman fonts on your Ubuntu desktop. Or you might be working on some DTP or, and need some Microsoft-originated fonts.

Either way, this is a straightforward change to make to your Ubuntu Linux computer. Microsoft TrueType Fonts Back in 1996, Microsoft released a package of fonts, called “TrueType core fonts for the web” with a licence giving any user permission to install them. Naturally, in true Microsoft style, the aim was for their fonts to become dominant. Although cancelled six years later, the font pack is still available, and includes: • Andale Mono • Arial Black • Arial (Bold, Italic, Bold Italic) • Comic Sans MS (Bold) • Courier New (Bold, Italic, Bold Italic) • Georgia (Bold, Italic, Bold Italic) • Impact • Times New Roman (Bold, Italic, Bold Italic) • Trebuchet (Bold, Italic, Bold Italic) • Verdana (Bold, Italic, Bold Italic) • Webdings You’ll probably recognize most of these; Times New Roman used to be the default text for Word (replaced by Calibri in 2007), while Impact is the sort of font that appears on posters around the word.

And as for webdings. Of course, you might not require any of these fonts.

After all, Ubuntu and other distributions already feature a wide selection of adequate substitute fonts thanks to the inclusion of the Red Hat “Liberation Fonts” package. They’re not completely identical, but these fonts do use the same widths as the Microsoft fonts they replace. Which is why you might want the real thing. In short, if Microsoft fonts were installed in Linux, your Linux apps — anything ranging from LibreOffice Writer () to GIMP — would present them as options. LibreOffice could benefit from it, especially if you’re struggling to transition from Microsoft Word. Install Microsoft TrueType Fonts in Ubuntu In older versions of Ubuntu, it was possible to install these fonts using the Software Center, but this is no longer an option.

Fortunately, you can just use the command line instead. Launch the terminal, then use this command to install the ttf-mscorefonts-installer package. Renewable Energy Boyle Rarity. Sudo apt-get install ttf-mscorefonts-installer Unusually, you’ll be prompted to agree to a Microsoft EULA (here’s ).

Now, this is the bristly bit: you might have reservations about this. Although these TrueType fonts have been made available for free, you’ll notice that they’re not open source. Also, the EULA has “Microsoft” pasted all over it. But, if you aren’t a pure open source user, carry on, scrolling through the EULA with the Page Up/Down keys.

Use Tab or the arrow keys to select Yes and agree to the EULA with Enter. Once downloaded into your system, the fonts will be configured so that they can be used in the usual apps. If you’re using a different Linux distribution, you may find that the ttf-mscorefonts-installer package isn’t available. However, an alternative should be open to you, under a slightly different name. A few minutes of research should turn this up. Running a Dual Boot Windows and Linux System? If you have both Windows and Ubuntu operating systems installed on the same PC, you don’t even need to download the fonts, as you already have them installed in Windows.

This means that you can copy the fonts into Ubuntu. More importantly, this is a great way to pull all manner of modern, cool fonts from Windows into Linux. ClearType fonts like Calibri can be added to your system this way. In Ubuntu, you should be able to easily browse the partition where Windows is installed, using your. Next, you’ll need to copy fonts from the directory in the Windows partition to your Linux fonts directory. Mkdir /usr/share/fonts/WindowsFonts Then copy the contents of the mounted Windows drive fonts directory into the WindowsFonts location: cp /Windowsdrive/Windows/Fonts/* /usr/share/fonts/WindowsFonts Change permissions for the directory and its contents: chmod 755 /usr/share/fonts/WindowsFonts/* Then regenerate the Linux fontconfig cache with fc-cache That’s all there is to it. Test Your Fonts As with anything, it’s worth checking that the fonts have been installed. The easiest way to check is to open LibreOffice Writer, or find an art package and create a text box.

If they don’t look right, you may need to enable smoothing. In Ubuntu, this is handled by default.

(On other Linux operating systems, you can fix it by checking the font settings (typically in the Preferences screen) and find the option to enable smoothing.) Once you’re happy with the fonts, you can even set your favorite as a default option in LibreOffice writer. With the word processor running, open Tools >Options >LibreOffice Writer >Basic Fonts (Western) and select your preferred font. Click OK to confirm; all future documents you create will use these defaults.

For wider use of the new fonts, use Unity Tweak Tool (or, or whatever suits your ) to apply the new fonts. And if neither of the above methods worked for you, perhaps the slightly easier option of installing might solve your missing Microsoft fonts problem? Have you installed Microsoft fonts on your Linux PC? How easy was it, and did the results meet your expectations? Tell us in the comments. Image Credit: Sinart Creative via Shutterstock.com.