Nabble - Linux On Smart Device (ARM embedded)

Bluetooth Module (Marvel chip 8688) not working with omap3530

2009-11-17T02:09:53Z

Hi
We are working with the WiFi/BT combo module WM-BG-MR-03 of USI Technologies.

We have interfaced this module through UART to the OMAP3530 Processor. Currently we are facing an issue with the bluetooth interface.

The device is not responding for BCSP/CSR protocol of bluz utility(hciconfig). When
we probe the Serial line between the processor and the BT module, we observed
signal toggling in the line. Hence we feel that the initialisation sequence is issued by the processor, but the BT module is not responding to that.
We are updating the firmware using sd8688_helper.bin and sd8688.bin.

running the below commands.

#hciattach ttyS1 bcsp 115200
#hciattach ttyS1 csr 115200

Both the results for above commands is
"Initialisation timed out".

Please let me know have any used this chip ?

Please also help us to debug.

With regards
Gokul

udevd beginner .......

2009-03-14T01:50:46Z

Hi ,

I am using linux 2.6.22 for my embedded box . I am using udev-140 . I have only one 50-rules file , in which 2 rules are written . These 2 rules are for usb-drives . These are working fine for me .

I have some applications like dhclient , udhcpc are started in rcS script . The udevd is started before mounting all hard drives .

********************** rcS*************************

mount /mnt/drive1 /dev/sda
udevstart
udevd &
...........

ManageMyDevices & // it is doing , ifconfig eth1 192.168.1.1 up , dhclient eth0 etc .....
....................
....................

*******************************************************

ManageMyDevices is a elf program written to for all High level api . So udev rules will call theseAPI thru some interface to mount usb drives . But if you connect usb drives and boot the embedded box , those API will fails . Becose , by the time ManageMyDevices is not started .

To work this correctly , i moved the position of udevd down like the below

********************** rcS*************************

mount /mnt/drive1 /dev/sda

ManageMyDevices & // it is doing , ifconfig eth1 192.168.1.1 up , dhclient eth0 etc .....
....................
....................

udevstart
udevd &
...........

*******************************************************

Now everything seems to work ....But if the box boots up and i do ifconfig .........eth0 is down .......Is udevd should be started before doing ifconfig ..

My understanding ...

1) udevd rules does not containg rules for eth0
2) udevd is entirely on userspace
3) udevd is exclusively used for character , block

Thanks,
Karana .

Training & jobs

2008-11-07T03:14:02Z

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flash.img mount

2008-10-07T09:06:34Z

i have a flash.img that contains half ext2 and half squashfs . Can i use mount command to see any one of the filesystem ?
I am able to mount individual parts if spliited and mount .

linux kenel compiling

2008-10-07T09:04:32Z

i tried to build linux for my embedded box (linux 2.6.22.18 ) . I have the lsp for the borad .I copied it .But i get following error ..Can you please show some clue on what may went wrong ? i have marked some in red ink for your convinience .Tool chain are already installed and is able to build some pakages like samba .

make -f scripts/Makefile.build obj=scripts/basic
make -f scripts/Makefile.build obj=.
mkdir -p arch/arm/kernel/
make -f scripts/Makefile.build obj=. missing-syscalls
/bin/sh scripts/checksyscalls.sh arm-none-linux-gnueabi-gcc -Wp,-MD,./.missing-syscalls.d -nostdinc -isystem /vob/magma/trunk/toolchain/kirkwood/arm-none-linux-gnueabi/bin/../lib/gcc/arm-none-linux-gnueabi/4.2.1/include -D__KERNEL__ -Iinclude -include include/linux/autoconf.h -mlittle-endian -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -DMOT_HMG21x0=2 -Os -marm -ffunction-sections -fno-omit-frame-pointer -mapcs -mno-sched-prolog -mabi=aapcs-linux -mno-thumb-interwork -D__LINUX_ARM_ARCH__=5 -march=armv5t -mtune=marvell-f -msoft-float -Uarm -fno-omit-frame-pointer -fno-optimize-sibling-calls -fno-stack-protector -Wdeclaration-after-statement -Wno-pointer-sign -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(missing_syscalls)" -D"KBUILD_MODNAME=KBUILD_STR(missing_syscalls)"
cc1: error: stdout: Value too large for defined data type
make[4]: *** [missing-syscalls] Error 1
make[3]: *** [prepare0] Error 2
make[3]: Leaving directory `/vob/magma/trunk/build/arm/kirkwood/linux-2.6.22.18'
make[2]: *** [.linux-build-make] Error 2
make[2]: Leaving directory `/vob/magma/trunk/make.inc/linux'
make[1]: *** [build] Error 2
make[1]: Leaving directory `/vob/magma/trunk/make.inc/linux'
make: *** [build] Error 2

Is there any env varible it can affect ?

Training & jobs

2008-09-12T08:09:38Z

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About Us:
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We not only help you get a job but we build your long lasting careers!!!
What are we Looking for:
Excellent communication skills.
Valid F1/ OPT/ CPT/ H1/ H4/ L1 or valid work status (EAD, GC).
Bachelors’ degree in CS/ IT or previous IT experience.
Preferably (not mandatory) Master's Degree in Computers/ Electronics or previous IT experience.
Willing to relocate anywhere in USA.
What’s The Deal:
H1-B sponsorship to F1/ OPT/ H4/ L1/ L2/ E3/ EAD
Transfer of H1 & L1 visas.
Green Card sponsorship through PERM
Job focused professional training in
Java/ J2EE
.NET
Documentum
Share point
Oracle
Data Modeling
Relocation assistance- airfare, hotel accommodation, car rental etc
Guarantee lowest bench period.
Employee referral program.
Effective Resume writing help, Marketing and Placement.
Technical mock interviews. Preparation of In Person Interviews
100% Guaranteed placement
Get in Touch:
Contact immediately to know more about the opportunities with us at:609-843-0312
or
write mail at jobs@v2techinc.com
Contact person : John

FATAL: modpost: GPL-incompatible module g_drm.ko uses GPL-only symbol 'dev_driver_string'

2008-08-21T22:32:01Z

Dear all,

I have a SoC(arm926ejs) running linux kernel 2.6.18. This chip have usb device contrroler. For this controller i developed a low level driver and gadget driver. When i make this gadget driver as built in, no issue in compiling kernel. But when i make this gadget driver as mdoule and compile the kernel, uImage is build suceesfully but gadget .ko is not made. One error come "FATAL: modpost: GPL-incompatible module g_drm.ko uses GPL-only symbol 'dev_driver_string'"

g_drm.c is the gadget driver file.

Complete log is as following:

LD arch/arm/boot/compressed/vmlinux
OBJCOPY arch/arm/boot/zImage
Kernel: arch/arm/boot/zImage is ready
Building modules, stage 2.
MODPOST
FATAL: modpost: GPL-incompatible module g_drm.ko uses GPL-only symbol 'dev_driver_string'
make[1]: *** [__modpost] Error 1
make: *** [modules] Error 2

can anybody help me, how to resolve this issue.

Thank you in Advance,

Manoj Khandelwal
Software engineer

FATAL: modpost: GPL-incompatible module g_drm.ko uses GPL-only symbol 'dev_driver_string'

2008-08-21T22:31:39Z

Dear all, I have a SoC(arm926ejs) running linux kernel 2.6.18. This chip have usb device contrroler. For this controller i developed a low level driver and gadget driver. When i make this gadget driver as built in, no issue in compiling kernel. But when i make this gadget driver as mdoule and compile the kernel, uImage is build suceesfully but gadget .ko is not made. One error come "FATAL: modpost: GPL-incompatible module g_drm.ko uses GPL-only symbol 'dev_driver_string'" g_drm.c is the gadget driver file. Complete log is as following: LD arch/arm/boot/compressed/vmlinux OBJCOPY arch/arm/boot/zImage Kernel: arch/arm/boot/zImage is ready Building modules, stage 2. MODPOST FATAL: modpost: GPL-incompatible module g_drm.ko uses GPL-only symbol 'dev_driver_string' make[1]: *** [__modpost] Error 1 make: *** [modules] Error 2 can anybody help me, how to resolve this issue. Thank you in Advance, Manoj Khandelwal Software engineer

Linux Bootup hangs after adding RealTime Premption and HR-Timer

2008-07-24T04:08:29Z

Hi All,

My Hardware is ARM based and the I am using ELDK (linux-2.6.19.2). I added a patch for Real-Time Preemption and it did work. I added High Resolution Timer as well (added architecture specific code). But after this change the system hangs during the boot-up itself.

Following is the boot log:

------------POWER OFF PHY-------------------PHY POWERED OFF SUCCESSFULLY-------#
# Booting image at 01600000 ...
Image Name: Linux-2.6.19.2
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 1400696 Bytes = 1.3 MB
Load Address: 00008000
Entry Point: 00008000
OK

Starting kernel ...

Uncompressing Linux.............................................................
.............................. done, booting the kernel.
Linux version 2.6.19.2 (pashish@dlhl0011) (gcc version 4.0.0 (DENX ELDK 4.1 4.0.
0)) #71 PREEMPT Thu Jul 24 14:52:27 IST 2008
CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
Machine: STM-spearplus
Memory policy: ECC disabled, Data cache writeback
CPU0: D VIVT write-back cache
CPU0: I cache: 16384 bytes, associativity 4, 32 byte lines, 128 sets
CPU0: D cache: 16384 bytes, associativity 4, 32 byte lines, 128 sets
Real-Time Preemption Support (C) 2004-2006 Ingo Molnar
Built 1 zonelists. Total pages: 16256
Kernel command line: console=ttyS0 root=/dev/ram0 initrd=0x00800040,7M
WARNING: experimental RCU implementation.
PID hash table entries: 256 (order: 8, 1024 bytes)

tmr allocated for ticks Tmr id = 1
<6> Timer0: time_init(): TICK_RATE: 48000000, HZ: , period: 100
Inactive clock event device hrt Clock Event registered
HRT Clk Event mult=0xc49ba5
start_kernel(): bug: interrupts were enabled early
Console: colour dumDentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 64MB = 64MB total
Memory: 54752KB available (2344K code, 495K data, 104K init)
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
BUG: time warp detected!
prev > now, 0000000000000000 > a50923cf1312d000:
= 6554668410375843840 delta, on CPU#0
checking if image is initramfs...it isn't (no cpio magic); looks like an initrd
Freeing initrd memory: 7168K
NET: Registered protocol family 16
AMBA peripheral sh:00 registered = 0
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
NET: Registered protocol family 2
IP route cache hash table entries: 512 (order: -1, 2048 bytes)
TCP established hash table entries: 2048 (order: 4, 65536 bytes)
TCP bind hash table entries: 1024 (order: 2, 28672 bytes)
TCP: Hash tables configured (established 2048 bind 1024)
TCP reno registered
HRT Clk Source mult=0x4d555555
NetWinder Floating Point Emulator V0.97 (double precision)
JFFS2 version 2.2. (NAND) (C) 2001-2006 Red Hat, Inc.
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
CLCD: spearplus hardware, Samsung LMS700 display
SPEAR :: Initializing in drivers ST Microelectronics SPEAR UART -- CPG inside U
ART
ttyS0 at I/O 0x0 (irq = 24) is a ST Microelectronics SPEAR UART -- CPG
ttyS1 at I/O 0x0 (irq = 25) is a ST Microelectronics SPEAR UART -- CPRAMDISK dri
ver initialized: 16 RAM disks of 8192K size 1024 blocksize
ST SPEARPLUS Ethernet Driver version 0.1

Size of struct eth_priv is 2016
struct eth_priv start(Virtual) address is ffd90000
struct eth_priv start(Physical) address is 3a31000
Physical address of Tx Descriptor chain is 3a31000
Physical address of Rx Descriptor chain is 3a31300<6>st: Version 20050830, fixed
bufsize 32768, s/g segs 256
osst :I: Tape driver with OnStream support version 0.99.4
osst :I: $Id: osst.c,v 1.73 2005/01/01 21:13:34 wriede Exp $
STW Serial Flash initializing...

Memory slot 1 is empty

Memory slot 2 is empty

Memory slot 3 is empty

The partitioning is done as mentioned (static)
Creating 5 MTD partitions on "ST M25P64":
0x00000000-0x00010000 : "Xloader"
0x00010000-0x00050000 : "UBoot"
0x00050000-0x00300000 : "kernel"
0x00300000-0x007f0000 : "Root File system"
0x007f0000-0x00800000 : "Temp"
ATI STW Serial Flash Device initialization done.

Inside nand probe function
NAND device: Manufacturer ID: 0x20, Chip ID: 0x76 (ST Micro NAND 64MiB 3,3V 8-bi
t)
Scanning device for bad blocks
Bad eraseblock 52 at 0x000d0000
Bad eraseblock 2073 at 0x02064000
Bad eraseblock 3636 at 0x038d0000
Creating 6 MTD partitions on "NAND 64MiB 3,3V 8-bit":
0x00000000-0x00010000 : "X-Loader"
0x00010000-0x00014000 : "Mem Init Func"
0x00014000-0x00054000 : "U-Boot"
0x00054000-0x00354000 : "Kernel+Initrd images"
0x00354000-0x00d54000 : "Root filesystem"
0x00d54000-0x04000000 : "user filesystem"
Registering EHCI SPEAR driver
Enter ehci_hcd_spear_drv_probe
ehci_hcd ehci_hcd.2: SPEAr EHCI
ehci_hcd ehci_hcd.2: new USB bus registered, assigned bus number 1
ehci_hcd ehci_hcd.2: irq 59, io mem 0xe1800000
ehci_hcd ehci_hcd.2: USB 0.0 started, EHCI 1.00, driver 10 Dec 2004
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
Enter ehci_hcd_spear_drv_probe
ehci_hcd ehci_hcd.3: SPEAr EHCI
ehci_hcd ehci_hcd.3: new USB bus registered, assigned bus number 2
ehci_hcd ehci_hcd.3: irq 61, io mem 0xe2000000
ehci_hcd ehci_hcd.3: USB 0.0 started, EHCI 1.00, driver 10 Dec 2004
usb usb2: configuration #1 chosen from 1 choice
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 1 port detected
Loading OHCI SPEAR driver
Enter ohci_hcd_syn_drv_probe
ENTERING OHCI SPEAR PROBE
ohci_hcd ohci_hcd.0: SPEAr OHCI
ohci_hcd ohci_hcd.0: new USB bus registered, assigned bus number 3
ohci_hcd ohci_hcd.0: irq 58, io mem 0xe1900000
usb usb3: configuration #1 chosen from 1 choice
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 1 port detected
Enter ohci_hcd_syn_drv_probe
ENTERING OHCI SPEAR PROBE
ohci_hcd ohci_hcd.1: SPEAr OHCI
ohci_hcd ohci_hcd.1: new USB bus registered, assigned bus number 4
ohci_hcd ohci_hcd.1: irq 60, io mem 0xe2100000
usb usb4: configuration #1 chosen from 1 choice
hub 4-0:1.0: USB hub found
hub 4-0:1.0: 1 port detected
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
usbcore: registered new interface driver usbtest
mice: PS/2 mouse device common for all mice

Real Time Clock Driver Initialized
TCP cubic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
802.1Q VLAN Support v1.8 Ben Greear <greearb@candelatech.com>
All bugs added by David S. Miller <davem@redhat.com>
Time: hrt Clock Source clocksource has been installed.
Clock event device hrt Clock Event configured with caps set: 08
Switched to high resolution mode on CPU 0
RAMDISK: Compressed image found at block 0
EXT2-fs warning: checktime reached, running e2fsck is recommended
VFS: Mounted root (ext2 filesystem).
INIT: version 2.85 booting
0
mknod: invalid option -- -
BusyBox v1.00-rc3 (2005.07.23-08:39+0000) multi-call binary

Usage: mknod [OPTIONS] NAME TYPE MAJOR MINOR

Create a special file (block, character, or pipe).

Options:
-m create the special file using the specified mode (default a=rw)

TYPEs include:
b: Make a block (buffered) device.
c or u: Make a character (un-buffered) device.
p: Make a named pipe. MAJOR and MINOR are ignored for named pipes.

Mounting a tmpfs over /dev...done.
Creating initial device nodes...done.
mknod: invalid option -- -
BusyBox v1.00-rc3 (2005.07.23-08:39+0000) multi-call binary

Usage: mknod [OPTIONS] NAME TYPE MAJOR MINOR

Create a special file (block, character, or pipe).

Options:
-m create the special file using the specified mode (default a=rw)

TYPEs include:
b: Make a block (buffered) device.
c or u: Make a character (un-buffered) device.
p: Make a named pipe. MAJOR and MINOR are ignored for named pipes.

0
Starting mounting local flesystems: mount none on /var/run type tmpfs (rw)
none on /tmp type tmpfs (rw)
Setting up IP spoofing protection: rp_filter.
Disable TCP/IP Explicit Congestion Notification: done.
Starting network interfaces: udhcpc (v0.9.9-pre) started
udhcpc[871]: udhcpc (v0.9.9-pre) started
Sending discover...
udhcpc[871]: Sending discover...

Can someone help me for this (whoever did RealTime Preemption and HR Timer for Kernel)?
Any help/hint will be highly appreciated :)

regards
Ashish

bitbake Build failure (Maybe because of LOCALE?)

2008-04-14T00:31:47Z

Hello,

I use Ubuntu and I've been trying to install gumstix-oe according to the following instructions:
http://www.gumstix.net/Software/view/Getting-started/Quick-start/111.html

The build stops with the following error:

NOTE: Running task 202 of 1391 (ID: 238, /media/host/gumstix/gumstix-oe/org.openembedded.snapshot/packages/git/git-native_1.5.2.3.bb, do_unpack)
NOTE: package git-native-1.5.2.3: started
NOTE: package git-native-1.5.2.3-r4: task do_unpack: started
NOTE: Unpacking /usr/share/sources/git-1.5.2.3.tar.bz2 to /media/host/gumstix/gumstix-oe/tmp/work/i686-linux/git-native-1.5.2.3-r4/
tar: git-1.5.2.3/gitweb/test/Märchen: Cannot open: Invalid or incomplete multibyte or wide character
tar: Skipping to next header
tar: Error exit delayed from previous errors
NOTE: Task failed:
NOTE: package git-native-1.5.2.3-r4: task do_unpack: failed
ERROR: TaskFailed event exception, aborting
NOTE: package git-native-1.5.2.3: failed
ERROR: Build of /media/host/gumstix/gumstix-oe/org.openembedded.snapshot/packages/git/git-native_1.5.2.3.bb do_unpack failed
ERROR: Task 238 (/media/host/gumstix/gumstix-oe/org.openembedded.snapshot/packages/git/git-native_1.5.2.3.bb, do_unpack) failed
NOTE: Tasks Summary: Attempted 201 tasks of which 0 didn't need to be rerun and 1 failed.
ERROR: '/media/host/gumstix/gumstix-oe/org.openembedded.snapshot/packages/git/git-native_1.5.2.3.bb' failed

I guess the problem has to do with the "git-1.5.2.3/gitweb/test/Märchen" filename, which probably cannot be handled by bash?

Is my assumption seem reasonable? How can I solve this?

Thanks,
Lior.

EP9315 Universal Platform, System-on-Chip Processor(china)

2007-11-07T18:56:25Z

GuangZhou DeviceGate Technology Co.,Ltd.(china)
Web address:http://www.devicegate.com
Contact Person::wangfeng
Tel: +86-20-82317785,+86-20-82317786 -602
Fax: +86-20-82317786-603
E-mail: feng@devicegate.com
MSN: yuereye @Hotmail.com

Description

The EP9315 is a highly integrated system-on-chip processor that paves the way

for next-generation consumer and industrial electronic products. The EP9315

features an advanced 200 MHz ARM920T processor design with a memory

management unit (MMU) that supports Linux? Windows CE?and many other embedded

operating systems. The ARM920T's 32-bit microcontroller architecture, with a

five-stage pipeline, delivers impressive performance at very low power.
Designers of digital media servers, jukeboxes, telematic control systems,

thin clients, set-top boxes, point-of-sale terminals, industrial controls,

biometric security systems and GPS devices will benefit from the EP9315's

integrated architecture and advanced features. In fact, with its broad range

of peripheral interfaces, the EP9315 is suited to even more applications. By

enabling or disabling the EP9315's peripheral interfaces, designers can also

reduce development costs and accelerate time to market by creating a single

platform that can be modified to deliver differentiated end products.

Cirrus Logic's embedded processor products are complemented by a range of

complete operating systems. Both Microsoft?Windows CE.NETand Linux?solutions

are available with total driver support.

Features

200 MHz ARM920T processor
16 KB data cache and 16 KB instruction cache
MMU enabling Linux?and Windows CE?
100 MHz system bus
MaverickCrunch?math engine
Floating point, integer and signal-processing instructions
Hardware interlocks allow in-line coding
MaverickKeyIDs for digital rights management or design IP security (special

order feature)
32-bit unique ID and 128-bit random ID
Integrated peripheral interfaces
PCMCIA interface
Graphics accelerator
EIDE, up to two devices
1/10/100 Mbps Ethernet MAC
Three-port USB 2.0 full-speed host (OHCI)
Three UARTs (16550 type)
IrDA interface, slow and fast mode
LCD interface with dedicated SDRAM channel
Touchscreen interface
SPI port
AC '97 interface
IIS interface, up to six channels
8x8 keypad scanner
External memory options
32-bit SDRAM interface, up to four banks
32/16/8-bit SRAM/Flash/ROM I/F
Serial EEPROM interface
Internal peripherals
Real-time clock with software trim
12 DMA channels for data transfer that maximizes system performance
Boot ROM
Dual PLLs control all clock domains
Watchdog timer
Two general-purpose 32-bit timers
40-bit debug timer
General-purpose I/Os (GPIOs)
16 enhanced GPIOs including interrupt capability
49 additional optional GPIOs on peripherals
Package: 352-pin PBGA; option for lead-free assembly and industrial

temperature ratings Diagram

DG9315-1.2 Single Board Computer Hardware Info.

MPU
>> 200 MHz Digital Cirrus EP9315 ARM9 RISC processor
Memory
>> 64MB SDRAM
>> 32MB NorFlash
>> 256MB NandFlash
External memory Interfaces
>> IDE (44-pin)
>> CF Card
Other Interfaces
>> RTC+Battery
>> 8x8 KeyPad
>> Two USB 2.0 Full-Speed Host Ports(12Mbps)
>> One TFT-LCD Connector(DF9-41S-1V,Hirose) Support 640×480、800×600
Expanslon Connector(64-Pin)
>> One JTAG
>> One CAN-bus
>> DC +12V Power
>> Two RS485 Ports
>> One 9-wire RS232C
>> Two 3-wire RS232C
>> One Four-Wire Touchscreen
>> One 10/100Mbps Ethernet port(RJ45)
Mechanical dimensions
>> Size：145x102mm
Operating Environments
• Windows CE
• Linux
• Others (contact factory for all options)

GuangZhou DeviceGate Technology Co.,Ltd.(china)
Web address:http://www.devicegate.com
Contact Person::wangfeng
Tel: +86-20-82317785,+86-20-82317786 -602
Fax: +86-20-82317786-603
E-mail: feng@devicegate.com
MSN: yuereye @Hotmail.com

EMBEDDED SYSTEM SOFTWARE LEAD

2007-09-16T23:50:43Z

Please send your resume to rkhanna@NVIDIA.com

EMBEDDED SYSTEM SOFTWARE LEAD #745552

DESCRIPTION/RESPONSIBILITIES:

Design and implement low level drivers and software for various embedded operating systems including Linux, VxWorks, QNX, and Windows CE on a variety of CPU platforms including x86, PowerPC, ARM and SH4. Use your experience in processor architecture, embedded operating systems and hardware fundamentals to support development of next generation multimedia solutions for DVD players, consumer electronics and other embedded platforms.

MINIMUM REQUIREMENTS:
- MSEE or equivalent
- 5+ years of experience in developing low-level drivers on multiple operating systems including Linux, VxWorks or QNX.
- Detailed knowledge of at least 2 of the following processor architectures: x86, PowerPC, ARM, SH4.
- 1+ year of experience in optimizing algorithms in one or more processor architectures. Knowledge must includeprocessor pipeline, memory/cache and parallel processing.
- Must be able to work closely with both hardware designers and other driver engineers to develop and debug functional and performance aspects of multimedia subsystems.
- Requires low-level Operating System knowledge, specifically memory/resource management, Scheduling and Process Control, and hardware virtualization.
- Other very useful experience: 2D/3D Graphic Acceleration (GPUs), DirectX VA, Video Codecs…

EOE

NVIDIA® is proud to be an Equal Opportunity Employer
For

SR. EMBEDDED SYSTEM SOFTWARE ENGINEER

2007-09-16T23:48:45Z

Please send resume to rkhanna@nvidia.com

SR. EMBEDDED SYSTEM SOFTWARE ENGINEER #918435

RESPONSIBILITIES:

Design and implement low level drivers and software for Windows Embedded CE on a variety of CPU platforms includingx86, SH4, PowerPC, and ARM. Use your experience in processor architecture, embedded operating systems and hardware fundamentals to support development of next generation multimedia solutions for automotive infotainment and arcade/pachinko, consumer electronics and other embedded platforms.

MINIMUM REQUIREMENTS:
- MSEE or equivalent
- 5+ years of experience in developing low-level drivers on multiple operating systems including WinCE, and preferably Linux, VxWorks or QNX.
- Detailed knowledge of at least 2 of the following processor architectures: x86, PowerPC, ARM, SH4.
- 1+ year of experience in optimizing algorithms in one or more processor architectures. Knowledge must include processor pipeline, memory/cache and parallel processing.
- Must be able to work closely with both hardware designers and other driver engineers to develop and debug functional and performance aspects of multimedia subsystems.
- Requires low-level Operating System knowledge, specifically memory/resource management, Scheduling and Process Control, and hardware virtualization.
- Other very useful experience: 2D/3D Graphic Acceleration (GPUs), DirectX VA, Video & Audio Codecs
EOE
**
NVIDIA® is proud to be an Equal Opportunity Employer

kernel 2.6 for Xscale IXP42x platform

2007-06-27T06:18:05Z

Hi Everybody,

I would like to load kernel 2.6 on my customised Target board having IXP422. I have u-boot 1.1.6 bootloader.

For this, I would like to know which kernel version can i decide on? How can i determine which version of 2.6 to go in for? Also do i need any patch? which ones ? and how to add a patch? can someone guide me through?

I have an Image which was done earlier with a different kernel used for the same board with redboot bootloader? Can i try using the same or will it be checking somewhere for the redboot bootloader?

Which toolchain should i use for building this kernel for X-scale IXP422 big endian architecture ? Is there nay opensource toolchain readymade avaliable or do i have to built one myself? I have never done this before though..

For the time being, I have downloaded the kernel 2.6.20 from kernel.org. how do i proceed next? how to get the IXP422 option in the kernel arch?

Can you guide me through this process
Pl help!

Queenie

Gnash

2007-06-15T03:35:03Z

Thanks for your motive to share your technical knowledge.
It will surely help we guys working on embedded linux systems.

Do any one has cross compiled gnash for arm?
I am not able to do this. I need help.

创建这个论坛的目的(The purpose of creating this forum)

2007-01-11T20:37:23Z

我希望能够在这里和embedded linux的开发人员共享一些idea,experience以及我自己在项目开发中写的一些文档.

I found it necessary to share some of my idea as well as some technical document created during my developping work. Hope this can help you guys.