A family of processor architectures used in many embedded applications, network and other appliances, and almost all smartphones.
20
votes
2answers
6k views
What do the flags in /proc/cpuinfo mean?
How can I tell whether my processor has a particular feature? (64-bit instruction set, hardware-assisted virtualization, cryptographic accelerators, etc.) I know that the file /proc/cpuinfo contains ...
10
votes
1answer
2k views
How can I test the RAM for data corruption on an ARM-based system?
I have an embedded device. It is ARM based, with Linux 2.6.31 and has 256 MB RAM.
I wanted to get some ideas/tips on what is the most effective way to test the device RAM for data corruptions. Is ...
6
votes
1answer
5k views
How can I chroot into a filesystem with a different architechture?
I'm trying to chroot into a Arch Linux ARM filesystem from x86_64.
I've seen that it's possible to do using static qemu by copying the binary into the chroot system:
cp /usr/bin/qemu-arm ...
6
votes
1answer
341 views
Linux kernel 2.6 on ARM
I have compiled and installed the 2.6 kernel on an ARM board. I am using the ARM mini2440 board.
I would like to know if there is already a way to access the General Purpose I/O port pins?
Or will ...
6
votes
1answer
1k views
Running Debian i386 binary on Debian armel via qemu
I am trying to follow this guide:
http://www.nslu2-linux.org/wiki/HowTo/SetUpAVentriloServer
to set up a Ventrilo server on my SheevaPlug, running Debian armel. This page states that you can use ...
6
votes
3answers
191 views
Can I install PHP on a Chumby One?
I'm enjoying hacking my Chumby One. However, I'd prefer if I could run PHP on it. I have perl and python installed.
Does anyone know if I can compile PHP for it or if there is a ready made distro for ...
5
votes
3answers
744 views
Looking for ARM- or MIPS-based computer (netbook or similar size) to play with
I am bored and want to play with a netbook or other small computer. Can anyone recommend something?
Requirements:
ARM or MIPS CPU
Can run Windows CE 6 and/or Linux (preferably dual-boot)
Linux ...
5
votes
2answers
694 views
ZONE_NORMAL and it's association with Kernel/User-pages?
Above is presented a case where I have only 512 MB of physical memory. What I have read up so far, is that ZONE_NORMAL is mapped to the kernel virtual address space as shown. Essentially I have a ...
5
votes
1answer
244 views
Embedded linux LCD not calibrated
I have attached a new LCD to my embedded Linux device and when I run the system I found that it is shifted to the right. (the display starts from the middle of the LCD)
I found 2 frame buffer drivers ...
4
votes
4answers
2k views
Linux on a tegra tablet for programming
I would like to use a tablet for some mobile programming. It would be nice to read a pdf and immediately try the code on the same device. I've found various videos and tutorials how to get Ubuntu ...
4
votes
0answers
395 views
CLFS: Building GCC cross compiler
Currently I try to build a embedded Linux from scratch with the instructions from Cross Linux from Scratch.
Everything worked fine until I tried to compile the GCC Cross-Compiler. I want to build the ...
3
votes
2answers
157 views
Is there a different linux kernel for different architectures?
If I want to build a custom kernel for an ARM architecture, do I need to :
a) Download the kernel from kernel.org, make changes to the kernel, build it using some cross compiler (like code sourcery ...
3
votes
2answers
320 views
What difference is between ARM Debian for Raspberry PI and Ordinary debian x32/X64 for desktop?
I would like to know, how big is difference between ARM debian for Raspbery PI and x32/x64 debian for desktop.
I would like to buy in future some ARM mini pc like raspbery PI and use it as for ...
3
votes
2answers
4k views
How to use /dev/fb0 as a console from userspace, or output text to it
So I have a Palm Pre (original P100EWW) model that I enabled developer mode on, and installed a Debian Squeeze chroot. Works great. I have plans to use this for ANYTHING (bittorrent peer, web ...
3
votes
1answer
297 views
GNU Radio prerequisite libraries on armhf
After several attempts, I have managed to compile GNURadio on the Raspberry Pi. However, I am just not able to meet the prerequisites for the gnuradio build script on the Pandaboard (Linaro 12.04) or ...
3
votes
2answers
429 views
How do I install a device driver provided as a .bin file?
I am a new Linux user and am struggling installing a driver for a usb WiFi device I want to use on an embedded system (BeagleBone).
When I download the driver for the chipset (Ralink 2070), it is ...
3
votes
1answer
365 views
Is it possible to install a custom Linux on an Android phone?
I have an Xperia X8 phone, and I'd like to know if I can install a non-Android Linux OS on it?
I would like to have a light Linux Distro, like Kolibri or something like that.
3
votes
1answer
934 views
How to debug Linux kernel panic?
I am trying to debug a kernel panic. Panic message says unable to handle kernel paging request for address 40025694.
At the time of panic it was executing ldreq r10, [lr, #-4] @ get SWI instruction. ...
3
votes
0answers
48 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
votes
0answers
92 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
0answers
82 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
votes
0answers
294 views
Set GPIO permissions cleanly
Can the default permissions and ownership of /sys/class/gpio/ files be set, e.g. by configuring udev? The point would be to have a real gid for processes that can access GPIO pins on a board.
Most ...
3
votes
0answers
322 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
votes
2answers
694 views
Linux and Android apps on ARM vs x86
There are a plethora of low-cost ARM-based mini-devices coming out (Cotton Candy, etc). Some of these are Android-only, some Linux-only, and some allow both operating systems to run.
The only issue ...
2
votes
2answers
423 views
Joli OS on ARM devices
I didn't really know where to ask this question, so since Joli OS uses the linux kernel and they don't seem to have a forum here I go.
All the official information I could gather says it doesn't work ...
2
votes
1answer
174 views
truecrypt 1: Syntax error: “(” unexpected
I want to use truecrypt on a Linux machine. It is CLI mode only. So I downloaded the x64 and x86 and tried or run the extracted executable file for each version (x64 & x86), but it doesn't work. ...
2
votes
1answer
897 views
Adding ssh on embedded linux
I want to run SSH on Qtopia (on my FriendlyARM). My own distribution is Ubuntu, so I cannot copy and paste the ssh binary file into the device.
If I can copy and paste a binary file, where can I find ...
2
votes
2answers
82 views
Correct use of TZ, date, and hwclock?
I'm working on an Buildroot developed ARM/ulibc Linux distribution for a custom board. I'm trying to understand the relationship between
If I do this, as I've seen on a few examples online:
# date ...
2
votes
1answer
2k views
How can I install Skype in Ubuntu on ARM?
I wonder how to install and use Skype in Ubuntu (12.04) on ARM architecture (my Toshiba AC100, which originally ran Android).
I suppose there must be Skype builds for Linux on ARM: for Android, and ...
2
votes
0answers
79 views
Why does my Pandaboard boot partition need to be vfat, and the rootfs need to be ext3 or ext4?
While booting Android on a Pandaboard, I am partitioning the SD card into two partitions, boot and root. They contain different filesystems. Why does the boot partition need to be vfat, while the ...
2
votes
1answer
104 views
Cross-compile FreeBSD package as unprivileged user
My goal is to cross-compile binaries from an amd64 FreeBSD host to an armv6 RaspberryPi FreeBSD target.
The problem I am running into is I am required to be root in order to make install, where my ...
2
votes
2answers
428 views
Cross compiling expect for ARM
I have downloaded expect5.4 . I'm trying to cross compile it for ARM(PandaBoard) running stripped down version of linux.
In the initial setup of configuring , I try
Shell$ ./configure --host=ARM
...
2
votes
0answers
365 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 ...
1
vote
1answer
630 views
Is there an ARM repository for Arch Linux?
I'm trying to create a chroot for my rooted android phone. I want to do this with the arch_bootstrap.sh script found on the wiki but I can't find an ARM repository.
My PC is x86_64 Arch Linux and my ...
1
vote
1answer
311 views
FreeBSD on ARM architecture?
Can FreeBSD be used for ARM architecture devices? Also, is there a camera driver for FreeBSD?
1
vote
4answers
2k views
Linux distributions for ARM processors
Are there any Linux distributions (Other than Backtrack and Android) available for ARM processors?
specifically ARM 11 (SE Xperia X8)
1
vote
1answer
1k views
“No such file or directory” lies on Optware installed binaries
I've been using Optware to install packages on my ARM-based NAS for a while - the usual stuff like Transmission, Samba and others. However, I'd been having problems with Transmission hanging not long ...
1
vote
1answer
638 views
Can one install an armel Ubuntu package on armhf Ubuntu system?
My particular concern is about installing "coq" in Ubuntu 12.04 for Toshiba AC100 (armhf distro), which hasn't been built successfully for armhf, but is available for armel -- ...
1
vote
1answer
24 views
UART0 Access in AM1808 using Embedded Linux
I am trying to interface GSM module with my AM1808 processor.
I am using gcc compiler as well as UBUNTU 10.04 Lucid.
I have configured the TXD and RXD pins of UART0 but i can not access the RTS and ...
1
vote
1answer
344 views
Using NetBeans on ARM Linux?
Is it possible to run NetBeans on a ARM CPU with Linux as OS (maybe Debian) ?
I want to be clear I don't need to compile for ARM (I will use NetBeans only for PHP coding).
So the question is about ...
1
vote
1answer
712 views
Can't open the initial console on ARM S3C2440 running utuLinux
I try to mount an NFS filesystem to the target board ARM s3C2440. I've started the NFS service and the portmap service. The server operating system is Ubuntu 10.04. I use minicom to communicate with ...
1
vote
1answer
86 views
What are all the mandatory content of the boot partition?
While studying about booting an Android on a board, I have learnt that MLO (X-loader), U-Boot and uImage are necessary to boot the Android on the board.
But I wondered that when I have come to know ...
1
vote
1answer
166 views
linux-sunxi - make failed, undefined references clk_*
I try to build uImage for linux-sunxi on a Debian box, which is prepared like this (How To Build Debian From Source Code for Mele):
apt-get install emdebian-archive-keyring
apt-get install ...
1
vote
1answer
252 views
Chromium browser displays blank screen
Xubuntu 11.10 oneiric armel
Asus eee pad slider sl101 nvidia-tegra 2 arm tablet
chromium browser 18.0.1025.151
Browsers which work fine are:
Midori
Epiphany
Firefox
Opening a link in ...
1
vote
1answer
245 views
How do I use pacman on a loop-mounted Arch image for a different architecture?
I would like to install some packages on an ARM image before flashing it to an SD card. So far, I have loop mounted the image
sudo mount -o loop,offset=99614720 archlinuxarm-13-06-2012.img /mnt
and ...
1
vote
1answer
255 views
Issues compiling Tanuki Java Service wrapper version 3.1.2 under armv5tel architecture
Basically I need this specific version of the Tanuki Java Service Wrapper to run a specific Java application. I downloaded the source from the Tanuki website and I'm trying to compile it from source.
...
1
vote
0answers
63 views
Build Linux and run it (uImage) on the Beagle board - xM
I'm working on some project where I'm using the Beagle board - xM Rev C. Power supply is 5V/2A adapter. My task is porting Linux Angstrom on the board but I have some problems. I have choosen Linux ...
1
vote
0answers
65 views
Is there any ARM platform for which high resolution timers are available in mainline (unpatched) kernels?
I currently have some projects using a TS-7400 board, which has a Cirrus Logic EP9302 ARM9 processor. Some of my applications require a 1ms periodic timer, so after lots of struggling I found these ...
1
vote
0answers
58 views
Further clarification as to whether interuppts are disabled in top-half handler or not [closed]
Recently I came across a note in an online post that states the following:
In modern kernels, most of the differences between fast and slow interrupts have disappeared. There remains only one: ...
0
votes
1answer
65 views
Bluetooth doesn't show up, Linaro
rfkill list all
Shows:
0: fxi_c210-bt: Bluetooth
Soft blocked: no
Hard blocked: no
And hcitool dev shows nothing except:
Devices:
Bluetooth didn't work, but at some start it didn't ...
