embedded-linux Questions
2
I enconter a problem I hope to be solved quickly.
I have grace to BUILDROOT compile a Linux zImage Kernel, build a rootfs, have a bootloader, so everething is right.
But at the boot, the system i...
Frontality asked 2/10, 2015 at 12:22
1
Solved
I am trying to understand Yocto recipes.
Following is one of the line from a Yocto Recipe:
DEPENDS_append_class-target = " grub-efi-native"
What I understood is this recipe depends on pa...
Klondike asked 5/4, 2018 at 6:38
3
Solved
I'm making an embedded Linux system and I wanted to add the 'bluez' package (and bluetooth utilities) to the packages of the Buildroot environment.
Unfortunately the tar ball seems to be unavailab...
Cutty asked 4/11, 2011 at 19:53
2
As per my understanding chosen node is used to send boot arguments to the kernel.
The following is the chosen node of the existing device code (am335x-bone-common.dtsi).
chosen {
stdout-path = &a...
Stereochromy asked 15/2, 2018 at 7:32
2
Solved
Is there any recipe for adding a new, empty directory to the rootfs? I tried adding this into one of my bbappend file:
do_install() {
install -d ${D}/tmp/myNewDir
}
FILES_${PN} += "/tmp/myNewDir"...
Bysshe asked 6/2, 2018 at 22:53
0
My organization is having a firmware for embedded device, written in C# using Mono on a custom linux on an armv7 32 bit processor. Now I want to upgrade it to use .NET Core 2.0 for this and removin...
Arriviste asked 29/12, 2017 at 5:29
1
Solved
I just started understanding Yocto. I didn't find much information about classes (.bbclass) files . I know a .bb file is a recipe, which contains the instruction to build a package.
When do we have...
Eructate asked 23/12, 2017 at 14:35
2
I am writing Linux user space application. where I want to invoke registered callback function in user space area from the kernel space.
i.e. interrupt arriving on GPIO pin(switch press event) an...
Altaf asked 6/7, 2017 at 13:14
2
I am studying about Linux Interrupt handling mechanism, just got doubt whether registering an interrupt handler from user-space is allowed or not?
Armoured asked 14/3, 2013 at 11:16
1
Solved
Goal: emulate the "sabrelite : Freescale i.MX6 Quad SABRE Lite Board (Cortex A9)" that Qemu specifically supports (doing 'qemu-system-arm -M ?' it shows up).
Qemu ver: 2.10.1 (host: fedora-27).
...
Zelazny asked 28/11, 2017 at 18:55
1
Solved
There are many questions similar to mine on google, I have tried them all but none of them works so I have to post this question.
I'm trying to use Valgrind to detect memory leak on some binary fi...
Cheshire asked 22/11, 2017 at 4:44
2
Solved
I spend a few days trying to understand but I'm stuck.
I get no more than a "Starting kernel..." message after entering 'bootm 8100000' on my STM32F429I-DISC1 board.
Before I update uboot from 201...
Vories asked 25/12, 2016 at 14:31
1
Solved
I'd like to run 'make localmodconfig' in an non-interactive way. While trying
yes " " | make localmodconfig
gave below error:
Console input/output is redirected. Run 'make oldconfig' to updat...
Dreeda asked 1/11, 2017 at 6:15
1
Solved
Refined Question
How do read and write text information from a MTD SRAM device with erase block size zero?
Notes:
I am using the 23K256 Driver
Attempts to use MTD-Util tools have failed because...
Hirudin asked 18/10, 2017 at 17:19
2
I'm working on setting up an OPKG repository to be used by embedded linux devices. We'd like to secure the server so that only our devices have access to the packages. I couldn't find any informati...
Creech asked 9/1, 2015 at 19:27
2
Solved
On my x86_64 board, there is i2c-bus coming out of a MFD device. There are devices on to this i2c-bus. I am able to detect these devices using i2cdetect program.
# i2cdetect -y 0
0 1 2 3 4 5 6 7 8...
Bengt asked 7/9, 2017 at 12:2
3
Solved
In my project I am using char driver to communicate between user space and kernel space. I use the function copy_to_user(void user *to, const void *from, unsigned long n) to copy data from kernel s...
Intimate asked 19/9, 2017 at 14:1
3
Solved
My goal is to send HDMI input video to the Raspberry Pi, then alter the input HDMI (image processing via C/C++ or Java) and send it back out a HDMI output port.
The issue is Raspberry Pi has only ...
Swett asked 29/8, 2015 at 20:16
2
We end up with 2 different repo with different history as two people started their own repo and now time to merge.
Start code is same and just two different git init and remote.
so condition is D...
Joplin asked 30/8, 2017 at 2:24
1
Solved
I'm trying to cross-compile gst-ti-plugin for arm device but when I do make install libtool returns me error:
../libtool: line 1085: arm-none-linux-gnueabi-ranlib: command not found
The problem ...
Nike asked 15/4, 2014 at 8:26
1
Solved
Question
My question is, What does linuxrc do? Do i need it in my rootfs? Does it have anything to do with using systemd vs initd?
Background
I am currently attempting to build a rootfs for an A...
Dowitcher asked 23/7, 2017 at 18:45
3
Solved
Bootloaders like U-Boot that do not implement the Open Firmware API, are expected to pass to the kernel a binary form of the flattened device tree - LinuxFDTBlob
Why are the DTS files present i...
Ecbolic asked 8/6, 2015 at 14:6
6
Solved
I'm trying to cross compile a helloworld kernel (2.6.x) module for ARM architecture on my intel x86 host.
The codesourcery tool chain for ARM is located at: /home/ravi/workspace/hawk/arm-2009q3
T...
Luxe asked 12/8, 2010 at 12:56
6
Solved
Are there any good emulators for learning embedded Linux ?
Majesty asked 29/1, 2010 at 7:30
1
Solved
Without adequate examples I keep going around in circles to get the 'seconds' version of iso8601 printed out by 'date'. Please look at the help that is provided with date with busybox 1.22.1. I can...
Talos asked 8/7, 2017 at 22:59
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