Questions tagged [arm]

A family of processor architectures used in many embedded applications, network and other appliances, and almost all smartphones.

179 questions with no upvoted or accepted answers
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1answer
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Debian: How to resolve relocation error?

I am running Debian 7.1. I tried to apt-get install -f, and messed up. All command line returns ln: relocation error: /lib/arm-linux-gnueabihf/libc.so.6: symbol _dl_find_dso_for_object, version ...
4
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0answers
936 views

How to run docker inside android chroot

I have debian stretch installed in arm64 android phone in chrooted environment. I have installed docker-ce following these steps from here. On starting docker :: systemctl start docker returns this ...
4
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1answer
279 views

kernel: nf_conntrack: table full, dropping packet; Underlying Reason

I have a modified linux on an ARM9 processor. It was working OK, but yesterday I got this error repeatedly: kernel: nf_conntrack: table full, dropping packet I have 2 questions: How can I find out ...
4
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1answer
668 views

Why does U-Boot on Cubox continually reboot with error “** File not found /boot.scr **”?

Having used dd to write the standard stock Cubox Ignition image to Micro SD card, I'm finding the Cubox i4pro is continually rebooting, briefly showing these errors. ** File not found /boot.scr ** ** ...
3
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0answers
185 views

Listening on the data between a process and a serial port

I have a process that is using /dev/ttyAMA2 port to communicate with an external device on a PCB. What options do I have of listening to the communication between a process and a serial port, on an ...
3
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0answers
844 views

Printer on Raspberry (ARMv7 architecture)

I'm trying to do something that might be impossible, but I'm curious. I have a printer (this one) that I need to be able to print images from a RaspberryPi 3b. The main problem here is that there ...
3
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1answer
643 views

gcc cross compilation fails

I am trying to build a cross compiling gcc for ARM. This will be to update an existing gcc ARM cross compiler. The build runs fine until it gets to building libstdc++, after libgcc1 builds ...
3
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0answers
623 views

how to boot a fedora arm raw image on Windows

I want to run a fedora arm distributionon a windows 64bit machine. Got stuck with qemu showing a dark screen, and whatever I have read and tweaked it seems not boot. I did take the following ...
3
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1answer
659 views

How do I extract vmlinux from an ARM image?

I am trying to extract vmlinux from Ubuntu's netboot kernel used in the armhf architecture. The script extract-vmlinux returns extract-vmlinux: Cannot find vmlinux. It even fails when I try to use ...
3
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1answer
108 views

Is possible to focus single core on very realtime calculations while using others as regular cores?

I am finishing part of project I started while ago and I need decent kernel for it. There is code that is critical to be ran all the time, as latency bigger than 1us may have impact on quality of ...
3
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0answers
488 views

How to compile custom kernel for Raspberry Pi

I'm trying to run the Ubuntu 14 Raspberry Pi ARM image in QEMU, and for that I need the kernel that matches the version used in the image. If I mount the image and run file vmlinuz I see: vmlinuz: ...
3
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0answers
2k views

Installing Mali Drivers? (ArchLinuxARM)

I've recently gotten hold of an ARM-based Chromebook C100P. After successfully installing ArchLinuxARM, I've struggled to enable the Mali-T764 GPU. The recommended drivers for the device, (xf86-video-...
3
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0answers
1k views

802.11ac USB dongle support in Linux

(cross-post from Network Engineering community) Is it reasonable to expect to be able to get a 802.11ac dual-band USB wireless dongle to work correctly on Debian (wheezy) on an ARM platform (using ...
3
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0answers
2k views

Installing Brother DCP-195C on cups

I try to install my printer (Brother DCP-195C) on my Raspberry Pi. Due to the ARM architecture, I can't use the binary provided by Brother. Therefore I use the source files. I have installed ...
3
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0answers
578 views

redirecting output of /dev/fb0 to /dev/fb2

I am using IMX6 Saberauto board on Linux OS. I have 2 displays primary is HDMI and secondary is LVDS. I want to run 2 applications. One QT on primary display, which I am able to do. Second ...
3
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0answers
573 views

Getty not starting in qemu

I'm trying to get running an ARM based Debian inside qemu. As a rootfs I'm using structure from embeddedarm 2gb sdcard image with versatile 2.6.24 kernel downloaded from fedora qemu tutorial site. At ...
3
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0answers
427 views

Exynos 5 DVFS or turning off cores in Ubuntu - Scaling frequency for one of the cores only (dual core) (cpufreq)

I was wondering if there is possible to scale only one of the cpu cores in the A15 in Exynos 5 ? I have tried using e.g cpufreq-set -c 1 -f 500MHz, but both cores are set to the same frequency. When ...
3
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0answers
417 views

My SMDK2416 (for s3c2416) kernel works on 64MRAM but crashed on 128M

I'm currently working on embedded arm linux with smdk2416(s3c2416) The kernel is working on the 64MRAM. Recently, I need to increase the RAM from 64M to 128MB with 64MB on bank0 and 64MB on bank1. ...
3
votes
1answer
434 views

Implement Java/JavaFX on ARM

I am working on ARM Linux. I have found this link that says that JavaFX could work on ARM. I am confused about Embedded Java SE and JavaFx ARM. Do I need to setup a JVM for those or not? I have ...
3
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0answers
2k views

Qemu doesn't boot kernel after “Uncompressing Linux… done, booting the kernel. ”

I've compiled qemu for s5pc110 (it's from http://gitorious.org/samsung-linux-platform/qemu, somebody had added support for s5pc110), version 0.12. But when I load the kernel: qemu-system-arm -M ...
3
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0answers
711 views

Toshiba Drive Sleeping - SDPARM

My toshiba 1tb external keeps going to sleep and I can't seem to locate anything that resembles a standby parameter. Does anyone know a way to get this drive to quit sleeping? Here is the output of ...
2
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0answers
53 views

Is it possible to Build and Run Linux on ARM Cortex-R and ARM Cortex-M devices and How?

Both these Profiles belong to ARMv7.As per Technical Reference Manual of both, they are not having Memory Management Unit (MMU) & they dont have ARM Instruction Set.They run on Thumb-1 & Thumb-...
2
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0answers
47 views

Is it possible to build Single GCC Executable for armv5, armv6, armv7-{cortex-xx-{A,R,M}},armv8 etc.?

Digging into the sources of GCC I noticed in files gcc/config/arm/t-*, There are multiple arm target options. Reading [GCC internal Manual], These are called Target Makefile Fragments, which will be ...
2
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1answer
241 views

Why does /proc/stat count more than 100 tick/s

I have a developer complaining that the CPU usage reported by /proc/stat is not consistent. It is my understanding that /proc/stat is counting ticks, which since kernel 2.6 has been fixed to 100/s ...
2
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0answers
105 views

USB keyboard not working after building the mainline Linux kernel on a generic Allwinner A23 Chinese tablet

For quite a while I've been trying to install a Debian distribution on my useless cheap tablet PC. After reading the details of building Linux kernel on ARM architecture Manual Build Howto I've found ...
2
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1answer
64 views

How to get one core of a quad-ARM running without an OS

I'm using a quad-core ARM CPU and I'm wondering if it is possible to get 3 cores running in Linux, and one core running without Linux?
2
votes
1answer
104 views

Determine which device was assigned to a USB modem?

I'm testing a Tinker board, which is an ARM gadget running Debian 9.8. I inserted a USB modem. It appears the modem was detected but I can't find a device for it: [ 8178.815663] usb 1-1.1.5: new full-...
2
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0answers
27 views

How can I stop webpages directing me to the mobile site (Firefox)?

I've recently started using Arch Linux on a Chromebook C201 (arm). However, when using Firefox, many websites seem to direct me to their mobile site, which is getting quite irritating. Perhaps they ...
2
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0answers
323 views

QEMU crashed while trying to boot up i.MX6q device kernel

When tried to boot up Kernel uImage of an i.MX6q based embedded device, it seems that QEMU crashes with "Unable to handle kernel NULL pointer dereference at virtual address 00000044". Before crashing ...
2
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0answers
432 views

Should Linux kernel build with -Werror?

I've always built the Linux kernel with -Wall -Werror to make sure I don't miss any warnings I introduce during developement. However it seems that as of 4.18 the default ARM build won't complete ...
2
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0answers
233 views

What is the preferred way to unhog a hogged GPIO pin?

So I'm doing development on an ARM embedded system which is using the device trees. We're going to integrate a small PCB with a processor and support components onto a bigger PCB, which will be the ...
2
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1answer
1k views

Getting big endian linux build to boot on ARM with u-boot

I’m trying to make a big endian build of a linux distribution for ARM. Since I’m on Gentoo, cross-compiling couldn’t be easier. I’ve already built it all, but then got stuck with getting it/the kernel ...
2
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0answers
216 views

Is there a linux interface for arm cp15 register access?

For performance optizimization I should be able to switch bits in ACTLR register of the cp15 unit. I've done stuff like this before in bare metal projects, but from linux user space I can't execute ...
2
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0answers
310 views

problem with qemu emulation, “black window!!”

I am running Ubuntu 16.04 x86, a kernel linux-4.9 and I followed this tutorial and everything works perfectly, but when I run qemu with: qemu-system-arm -m vexpress -a9 \ -kernel linux-4.9/arch/arm/...
2
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0answers
295 views

What happens if I install a GNU/Linux distro for ARMv7h in an ARMv7l machine?

I would like to install Parabola in a Banana Pi, which is a SBC based in Raspberry pi. It has an ARMv7l processor, and Parabola is for ARMv7h. I read this stackoverflow question and as far as I ...
2
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0answers
353 views

How to fix node in armv5

I am trying to fix nodejs on mlinux. So when i do a uname -m the output is armv5tejl. It came with pre-installed node and npm. I tried to upgrade but somehow i think I have broken something. Now when ...
2
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0answers
304 views

Make error for cross-compiling fontconfig-2.12.1

I'm trying to cross-compile fontconfig for my embedded Linux arm processor. I was able to perform ./configure but when I try to 'make', after compiling for a while, I've the following errors: ...
2
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0answers
886 views

Debian VM in qemu stuck in infinite boot loop?

So recently I tried to set up a Debian vm with qemu on an arm-arch pi...the problem is when I run the x86_64 arch vm with debian, it gets stuck in an infinite loop at boot. Even when I select recovery ...
2
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0answers
194 views

Porting kernel 4.6 to ARMv6 board (Samsung S3C6410) which runs 2.6.38

I'm trying to get kernel 4.6 running on an S3C6410 board. In order to complete the port and to boot fully, I need to configure the kernel to work with the NAND flash and the SD controller on the ...
2
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0answers
335 views

Opening a TUN device from QEmu x86 for ARMv7 fails

On Banana PI-R1 (ARMv7), with qemu-i386-static, I'm trying to execute Barracuda VPN client statically linked for x86. Following this topic works : Running X86 binaries on armv7 But, when the VPN tries ...
2
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1answer
812 views

error: conflicting types when cross compiling openssh for armv5tel

When cross compiling openssh-7.2p2 on wheezy for armv5tel, I get the following errors. Before this, I have successfully cross compiled and installed zlib-1.2.8 and openssl-1.0.2h. For openssl, I used ...
2
votes
1answer
822 views

Native Linux installation on Allwinner tablet

Is it possible to do a clean install (I mean a native install, just like on a computer) of a Linux distro on an Allwinner a33-based tablet (or more generally speaking on an Android tablet). And if yes,...
2
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0answers
70 views

Why is there no kernel for the armhf architecture available in the Debian repositories?

I tried searching packages.debian.org for "linux-image" in the stable distribution for the armhf architecture. See here for my exact query. There are no results. Is Linux not included in Debian for ...
2
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1answer
2k views

how to use grub-uboot

On an ARM-based device, I'd like to chain-load uboot->GRUB->Linux I see there is a Debian package that seems to be made for that, however I can't find no documentation whatsoever how to use it (ie. ...
2
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2answers
138 views

porting kernel config to different architecture

I have a good Kernel .config setup for x86 that I'm happy with. Now I have a few different ARM-based devices (some without video output) that all come with their default pre-configured settings. I'd ...
2
votes
1answer
109 views

Pacman add-repo error, is not a package file

I'm using archlinuxarm, armv7h architecture I'm trying to use add-repo but it gives me the following error: $ repo-add test.db.tar.gz dep/python2-numpy-1.9.2-2-armv7h.pkg.tar.xz ==> ERROR: 'dep/...
2
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0answers
261 views

Move/Change boot file system

I have a webcam Sunluxy 720p and I need to adapt the configuration to my needs. The / filesystem is read-only. I have access to u-boot via UART/USB cable. I can also connect via telnet as root. ...
2
votes
1answer
269 views

Embedded Linux USB Audio Issue

I have a Corewind WiFiG25 board based on the AT91SAMG25 400 MHz following Arm processor running Linux 3.6.9 built using Buildroot. I am attempting to play mp3 files using mpg123 connected to an ALSA ...
2
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0answers
169 views

multithread handling in AM1808 using embedded Linux

I am using AM1808 ARM9 based board using GCC compiler (UBUNTU 10.04) . I am using Sqlite3 database management. I have some requirement regarding handling threads in background having access on ...
2
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0answers
58 views

GNU toolchains against GCC SVN?

Is there anything like CodeSourcery which provides prebuilt binaries for arm toolchains built against gcc-svn. http://elinux.org/Toolchains#Prebuilt_toolchains Otherwise, a working instruction for ...