problem with watchdog/reboot MPC5200
Arno, I think your problem is related to Intel Strataflash specifics. After a write to strataflash, it remains in status mode until another read (or reset) command is issued. This means you don't get the flash contents when reading it, but a status bit (e.g. 0x8080 at every spot). So when the processor start executing after a reset, it's not reading proper instructions. You first need to e.g. write a reset cmd (0x5050) to it or connect the processor's hardreset line to the flash device. Jaap-Jan On Thu, 2006-04-20 at 11:46 +0200, Arno Geissel wrote: Hello all, I have a custom board based on MPC5200 processor running the latest linuxppc_2_4_devel. Everything is working fine until a flash write access is performed using MTD. After this a (soft) reboot stucks in mpc5xxx_restart() where the watchdog timer is charged and linux waits with closed interrupts until the MPC performs the reset. Only power off helps in this situation. It seems to me like a hardware problem, because the freescale MPC5200lite reference board does not run into this. The main difference of the custom board to the reference board is, that it is using 16MB Intel Strada Flash instead of AMD flash, which has an erase block size of 128kB. Has anybody else experienced such behaviour? Arno Geissel ___ Linuxppc-embedded mailing list Linuxppc-embedded at ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded -- next part -- A non-text attachment was scrubbed... Name: smime.p7s Type: application/x-pkcs7-signature Size: 1513 bytes Desc: not available Url : http://ozlabs.org/pipermail/linuxppc-embedded/attachments/20060420/91c83c98/attachment.bin
NAND and JFFS2 supports in Linux 2.4
Laurent, Take a look at the 2.4 http://www.denx.de kernel, it has NAND and jffs2 support. Jaap-Jan On 11-apr-2006, at 18:31, Laurent Lagrange wrote: Hello, I work on a custom 82xx board with a NAND flash : NAND device: Manufacturer ID: 0xec, Chip ID: 0xf1 (Samsung NAND 128MiB 3,3V 8-bit) I have to KEEP a Linux 2.4 and can't migrate to a Linux 2.6 for this board. This type of NAND flash and JFFS2 work fine with a Linux 2.6 but with a Linux 2.4, this is a little tricky : Linux 2.4.18 or 2.4.25 do not support this device, Linux 2.4.31 seems supporting this device but JFFS2 is not adapted, Linux 2.4.32 does not support this device anymore. On www.linux-mtd.infradead.org, it seems that Linux 2.4 is no more supported. Any help would be welcome Thanks Laurent ___ Linuxppc-embedded mailing list Linuxppc-embedded at ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded -- This message has been scanned for viruses and is believed to be clean J.G.J. Boor Anton Philipsweg 1 Software Engineer 1223 KZ Hilversum AimSys bv tel. +31 35 689 1941 Postbus 2194, 1200 CD Hilversum jjboor at aimsys dot nl
How to quickly write cleanmarkers to jffs2 partitions?
On Fri, 2006-03-03 at 10:08 +0100, Mathieu Deschamps wrote: Hi, When preparing a flash partition for JFFS2, it is recommended to put cleanmarkers to the erased blocks. This might be done my means of -j option of the flash_eraseall MTD utility. Otherwise, JFFS2 will re-erase the blocks which contain all 0xFF and have no cleanmarker. This is an unneeded wasting of time. Source : http://www.linux-mtd.infradead.org/faq/jffs2.html does this may be relevant ? This is correct, however flash_eraseall does also (as it's name suggests, erase all flash blocks, which takes some time on NOR flash. If you 'know' the flash is erased, it's not needed. I used flash_eraseall to write the cleanmarkers, but without erasing blocks (and called that utility cleanmark) Jaap-Jan Best Regards, Mathieu Deschamps. ___ Linuxppc-embedded mailing list Linuxppc-embedded at ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded -- next part -- A non-text attachment was scrubbed... Name: smime.p7s Type: application/x-pkcs7-signature Size: 1513 bytes Desc: not available Url : http://ozlabs.org/pipermail/linuxppc-embedded/attachments/20060306/29f60e2c/attachment.bin
How to quickly write cleanmarkers to jffs2 partitions?
Hi David, I indeed did write a small program that only writes the cleanmarkers in all flash blocks used for jffs2. We assume (and check) all flash sectors are erased already. Jaap-Jan On 2-mrt-2006, at 17:06, David Jander wrote: Hi, I was wondering if there is a trick or common technique I am ignoring to make this more efficient: This is for a 2.4 kernel based system. In production we use either u-boot or a NFS mounted linux system to erase flash and write jffs2 partitions to it. The jffs2 images are small (not padded to full partition size to save programming time), but the partitions are rather big (12 Mbyte in one case). Problem is that when booting for the first time, one has to wait several minutes (during which the system is more or less useless and busy) to get all cleanmarkers written to flash by the jffs2 gc thread. This huge delay is rather unacceptable for production, so we are looking for a work-around. One option would be to make jffs2 images that are padded to full partition size, but that also isn't very efficient, considering the image is only about 100k in beginning and the partition is 12 Mbyte in size. That would take a lot of time programming flash (less time than having the jffs2 driver fix this nevertheless). Another option is making a little program that writes cleanmarkers in every eraseblock starting from the first completely empty one in a partition before mounting that partition for the very first time after flashing. Since this seems to me like a common situation, I'd like to know if anybody knows about a better solution, or if anybody has already dealt with this before. Greetings, -- David Jander Protonic Holland. tel.: +31 (0) 229 212928 fax.: +31 (0) 229 210930 Factorij 36 / 1689 AL Zwaag ___ Linuxppc-embedded mailing list Linuxppc-embedded at ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded -- This message has been scanned for viruses and is believed to be clean J.G.J. Boor Anton Philipsweg 1 Software Engineer 1223 KZ Hilversum AimSys bv tel. +31 35 689 1941 Postbus 2194, 1200 CD Hilversum jjboor at aimsys dot nl
PCI on MPC827x
We use it with 2.4.25. I think you should take a look at Wolfang Denx' 2.4 kernel Jaap-Jan Alex Zeffertt wrote: On Tue, 06 Sep 2005 16:45:15 +0400 Vitaly Bordug vbordug at ru.mvista.com wrote: Alex Zeffertt wrote: Hi list, Does the linuxppc kernel support PCI on PowerQUICC II chips? If so, in which patch/release was it added? The PCI bridge for 8272ADS has been added in 2.6.12-rc6. This stuff should work on PQ2FADS as well. Thanks Vitaly. Unfortunately we're using linux-2.4.25. Has anybody backported the PCI bridge to 2.4? If not, do you think it's a lot of work? Alex ___ Linuxppc-embedded mailing list Linuxppc-embedded at ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded -- J.G.J. Boor Anton Philipsweg 1 Software Engineer 1223 KZ Hilversum AimSys bv tel. +31 35 689 1941 Postbus 2194, 1200 CD Hilversum mailto:jjboor at aimsys.nl
2.4.26 and MPC885 context switching time
I did once ran lmbench on a proprietry 850 based board running at 62/31 Mhz using 1 16-bit dram: Context switching - times in microseconds - smaller is better - Host OS 2p/0K 2p/16K 2p/64K 8p/16K 8p/64K 16p/16K 16p/ 64K ctxsw ctxsw ctxsw ctxsw ctxsw ctxsw ctxsw - - - -- -- -- -- --- --- testLinux 2.4.25- 259.2 234.2 302.6 304.7 This is ~ 3x faster then your 100Mhz 885... Jaap-Jan On 15-jun-2005, at 16:55, Schaefer-Hutter, Peter wrote: Hi all, i'm evaluating IPC on the MPC885ADS and discovered that the context switching times seem to be quite disappointing (up to 1ms). As we need to do a lot of IPC later on, i'm interested bringing the time down. Therefore i wonder, if there are any known problems with the MMU on 8xx and 2.4.2x which might explain that? Or is this the expected context switching time for CPU @ 100 MHz (RAM @ 50 MHz)? Suggestions for a benchmark program? Thanks! Peter ___ Linuxppc-embedded mailing list Linuxppc-embedded at ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded J.G.J. Boor Anton Philipsweg 1 Software Engineer 1223 KZ Hilversum AimSys bv tel. +31 35 689 1941 Postbus 2194, 1200 CD Hilversum jjboor at aimsys dot nl
Dynamic libraries do not work
Theo, What type of processor are you using? 8xx? Did you build a tool-chain yourself and are you perhaps using floating point? Jaap-Jan On 26-mei-2005, at 23:04, Theo Gjaltema wrote: Hello, I have a linux 2.4.20 kernel running, but the files in the ramdisk fail to execute if they are dynamically build. The whole system stops (debuggers shows that it crashed while in an erea where no flash/ram is present. Anyone an idea? There is nog difference between the use of a ramdisk or an nfs mounted root filesystem. Greetings, Theo. ___ Linuxppc-embedded mailing list Linuxppc-embedded at ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded J.G.J. Boor Anton Philipsweg 1 Software Engineer 1223 KZ Hilversum AimSys bv tel. +31 35 689 1941 Postbus 2194, 1200 CD Hilversum jjboor at aimsys dot nl
ELDK/DENX: doesn't find iostream-lib when linking
Peter,
you should use g++ as compiler front end when compiling C++ programs
compiler = ${CROSS_COMPILE}g++
best regards,
Jaap-Jan
On 12-mei-05, at 11:13, Peter Gehirnforce wrote:
I use a makefile with dependencies:
--
# Makefile for simple test program
# The CROSS_COMPILE is set globally, as well as ELDK gcc-paths
compiler = ${CROSS_COMPILE}gcc
simple_server_objects = ServerSocket.o Socket.o simple_server_main.o
simple_client_objects = ClientSocket.o Socket.o simple_client_main.o
all : Socket ServerSocket simple_server_main simple_server ClientSocket
simple_c
lient_main simple_client
simple_server: $(simple_server_objects)
$(compiler) -o simple_server $(simple_server_objects)
simple_client: $(simple_client_objects)
$(compiler) -o simple_client $(simple_client_objects)
#ppc_gcc dependencies, added for compiling with ppc only!!
Socket:
$(compiler) -o Socket.o -c Socket.cpp
ServerSocket: Socket.o
$(compiler) -o ServerSocket.o -c ServerSocket.cpp
ClientSocket: Socket.o
$(compiler) -o ClientSocket.o -c ClientSocket.cpp
simple_server_main: ServerSocket.o
$(compiler) -o simple_server_main.o -c simple_server_main.cpp
simple_client_main: ClientSocket.o
$(compiler) -o simple_client_main.o -c simple_client_main.cpp
clean:
rm -f *.o simple_server simple_client
The program itself is using string iostream and other STL libs with
namespaces in use.
It compiles for i686 on my host machine.
BUT I had to change the Makefile!!! (that is why I posted it)
The dependencies starting from gcc-ppc dependencies are added.
Are they defined wrong?
Peter
--- Urspr?ngliche Nachricht ---
Von: Wolfgang Denk wd at denx.de
An: Peter Gehirnforce Gehirnmann at gmx.de
Kopie: etux at embeddedtux.org
Betreff: Re: ELDK/DENX: doesn't find iostream-lib when linking
Datum: Thu, 12 May 2005 09:46:10 +0200
In message 28918.1115882747 at www45.gmx.net you wrote:
when compiling for ppc_6xx architecture, the linker doesn't find the
lib's
for iostream headers.
Do I have to use other headers than the standard iostream ones, or
do
they
simply not exist?
I guess this is a usage error. Can you please provide a simple
example which shows the problem?
Best regards,
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
What is research but a blind date with knowledge? -- Will Harvey
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[PATCH] Freescale Ethernet combined driver
Hi, May be a little late (I'm trying to catch up on all mailing list mail) but I was wondering if the io port handling functions I see now in these patches should not be 'atomic'. So toggling MII pins does not interfere with toggling e.g. I2C bit-bang interface pins when those pins happen to be on the same port (A/B/C/D/E). best regards, Jaap-Jan
[PATCH] Freescale Ethernet combined driver
Ah, very good, thanks Jaap-Jan On 12-mei-05, at 12:43, Pantelis Antoniou wrote: Jaap-Jan All mii operations are done under a spinlock with interrupts disabled. Regards Pantelis
USB on 8250 PCI
What kernel version do you use? In a 2.4 series kernel, you might check m8260_pcibios_fixup() and probably set dev-irq ? I don't know yet if this is the same in 2.6. I recently saw a lot of pci setup related changes in this mailing list. Jaap-Jan On 7-apr-05, at 8:23, Wojciech Kromer wrote: i still can't figure out is it a hardware or configuration problem, i can see all registers, drivers seems to work, it can detect device insert but there is no data transmision there are also no interrupts, i'm not sure what to write in interrupt_line in PCI config space any hints? = here is my dmesg part: ehci_hcd 00:1e.2: PCI device 1033:00e0 ehci_hcd 00:1e.2: irq -20, pci mem c924b000 usb.c: new USB bus registered, assigned bus number 1 ehci_hcd 00:1e.2: ehci_start hcs_params 0x2385 dbg=0 cc=2 pcc=3 !ppc ports=5 ehci_hcd 00:1e.2: ehci_start portroute 1 0 1 0 0 ehci_hcd 00:1e.2: ehci_start hcc_params e806 thresh 0 uframes 256/512/1024 park ehci_hcd 00:1e.2: capability 0001 at e8 ehci_hcd 00:1e.2: reset command 080b02 park=3 ithresh=8 period=1024 Reset HALT PCI: 00:1e.2 PCI cache line size set incorrectly (0 bytes) by BIOS/FW, correcting to 32 ehci_hcd 00:1e.2: init command 010b09 park=3 ithresh=1 period=256 RUN ehci_hcd 00:1e.2: USB 2.0 enabled, EHCI 1.00, driver 2003-Dec-29/2.4 hcd.c: 00:1e.2 root hub device address 1 usb.c: kmalloc IF c727f340, numif 1 usb.c: new device strings: Mfr=3, Product=2, SerialNumber=1 usb.c: USB device number 1 default language ID 0x0 Manufacturer: Linux 2.4.19-dgt ehci_hcd Product: PCI device 1033:00e0 SerialNumber: 00:1e.2 hub.c: USB hub found hub.c: 5 ports detected hub.c: standalone hub hub.c: ganged power switching hub.c: individual port over-current protection hub.c: Single TT hub.c: TT requires at most 8 FS bit times hub.c: Port indicators are not supported hub.c: power on to power good time: 0ms hub.c: hub controller current requirement: 0mA hub.c: port removable status: R hub.c: local power source is good hub.c: no over-current condition exists hub.c: enabling power on all ports usb.c: hub driver claimed interface c727f340 ehci_hcd 00:1e.2: GetStatus port 1 status 001803 POWER sig=j CSC CONNECT hub.c: port 1, portstatus 501, change 1, 480 Mb/s hub.c: port 1 connection change hub.c: port 1, portstatus 501, change 1, 480 Mb/s hub.c: port 1, portstatus 501, change 0, 480 Mb/s hub.c: port 1, portstatus 501, change 0, 480 Mb/s hub.c: port 1, portstatus 501, change 0, 480 Mb/s hub.c: port 1, portstatus 501, change 0, 480 Mb/s hub.c: port 1, portstatus 511, change 0, 480 Mb/s hub.c: port 1 of hub 1 not reset yet, waiting 10ms hub.c: port 1, portstatus 511, change 0, 480 Mb/s hub.c: port 1 of hub 1 not reset yet, waiting 10ms ehci_hcd 00:1e.2: port 1 full speed -- companion ehci_hcd 00:1e.2: GetStatus port 1 status 003801 POWER OWNER sig=j CONNECT hub.c: port 1, portstatus 0, change 10, 12 Mb/s ehci_hcd 00:1e.2: free_config devnum 0 hub.c: port 2, portstatus 100, change 0, 12 Mb/s hub.c: port 3, portstatus 100, change 0, 12 Mb/s hub.c: port 4, portstatus 100, change 0, 12 Mb/s hub.c: port 5, portstatus 100, change 0, 12 Mb/s ___ Linuxppc-embedded mailing list Linuxppc-embedded at ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
RTC with TQM823L
Can't you use a cpmtimer to fire every 10ms and wakeup a
high priority thread?
Jaap-Jan
On 17-mrt-05, at 8:47, Jean Nicollerat MD wrote:
Hello,
I need to have an interrup every 10ms in my application running in
linux.
I have a PowerPC 823 on the board TQM823L LCD from denx.
I use the ocan driver.
I try to use the RTC modules but with the code :
fd = open (/dev/rtc, O_RDONLY);
if (fd == -1) {
perror(/dev/rtc);
}
/* Turn on update interrupts (one per second) */
retval = ioctl(fd, RTC_UIE_ON, 0);
if (retval == -1) {
perror(ioctl);
//exit(errno);
}
I get an error message :
ioctl : invalide argument # for then line :retval = ioctl(fd,
RTC_UIE_ON,
0);
Can somebody help ? why it is not working or a better way to get
function
called each 10ms
Thanks
Jean
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Problems with MontaVista Linux on a Memec Virtex-II pro ff672 board
is there something printed before 'Now booting the kernel'? If so, do the memory ranges not overlap or something? Jaap-Jan On 17-mrt-05, at 13:49, S. van Beek wrote: Hello there, ? This is our first post on this list, hi all! We're two Dutch students working with a Virtex-II pro ff672 board from Memec with the Communications 2 module. We've compiled a simple kernel wich comes with MontaVista Linux?3.1 (2.4.20) with ethernet and a serial port. It mounts its root filesystem over NFS and everything seems to work nicely. The next step we wanted to make was adding?support for the Flash?on the com board. We added the IP to the hardware and loaded the new bitstream in the FPGA. Next thing, we enabled support for MTD devices in the kernel. After that, the kernel did not seem to boot anymore. It stopped at the message 'Now booting the kernel'. So we read some documentation about debugging. We recompiled this kernel with the -g -ggdb options and removed the -O (optimalization) flag. Then we did not even see the ppc boot loader messages anymore when trying to boot. So we tried to compile the first kernel (with only serial and ethernet support) -wich worked fine before-?with debugging and it gave us the same result.. no output at all. Can anyone give us some hints on what we can try more to find out what is going wrong? ? Regards, Sander van Beek Daniel van Os ___ Linuxppc-embedded mailing list Linuxppc-embedded at ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded J.G.J. Boor Anton Philipsweg 1 Software Engineer 1223 KZ Hilversum AimSys bv tel. +31 35 689 1941 Postbus 2194, 1200 CD Hilversum mailto:jjboor at aimsys.nl
Exception handling on mpc8xx cores
On Wed, 2004-12-08 at 05:15, Robin Gilks wrote: Greetings Any Freescale lurkers out there? The mpc866 manual implies that if the internal core times out an external Transfer Acknowledge bus signal (by exerting the internally generated Transfer Error Acknowledge signal) an exception is generated. I've tried extending the external TA signal well beyond 2040 clock cycles the maximum timeout allows and I see the busses start up again (indicationg that they are no longer waiting) but I don't see anything on TEA and I don't get an exception thrown. Any clues? Manual error?, silicon error?, my brain error? Did you enable the bus monitor in the SYPCR register? Jaap-Jan Cheers -- J.G.J. Boor Anton Philipsweg 1 Software Engineer 1223 KZ Hilversum AimSys bv tel. +31 35 689 1941 Postbus 2194, 1200 CD Hilversum mailto:jjboor at aimsys.nl
problems on USB
Hi, did you have a none/proc/bus/usb usbdevfs defaults 0 0 entry in your fstab? Jaap-Jan On 30-nov-04, at 3:32, zhonglei wrote: hi My system is Lite5200 with DENX Embedded Linux running on it.When I tried to enable my USB port to use my u-disk, the problem occured. I have enabled USB support with 'make xconfig'. The reports are as follows: U-Boot 1.1.2 (Nov 12 2004 - 11:46:06) CPU: MPC5200 v1.2 at 462 MHz Bus 132 MHz, IPB 132 MHz, PCI 33 MHz Board: Motorola MPC5200 (IceCube) I2C: 85 kHz, ready DRAM: 64 MB FLASH: 16 MB PCI: Bus Dev VenId DevId Class Int 00 1a 1057 5803 0680 00 In:serial Out: serial Err: serial Net: FEC ETHERNET IDE: Bus 0: OK Device 0: Model: Flash Card Firm: 2N3-0925 Ser#: CF Type: Removable Hard Disk Capacity: 123.0 MB = 0.1 GB (251904 x 512) Device 1: not available Autostarting.Press any key to abort.. Hit any key to stop autoboot: 0 Using FEC ETHERNET device TFTP from server 198.87.102.60; our IP address is 198.87.102.210 Filename 'MPC5200/uImage'. Load address: 0x10 Loading: # ### ## done Bytes transferred = 857559 (d15d7 hex) ## Booting image at 0010 ... Image Name: Linux-2.4.25 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size:857495 Bytes = 837.4 kB Load Address: Entry Point: Verifying Checksum ... OK Uncompressing Kernel Image ... OK Memory BAT mapping: BAT2=64Mb, BAT3=0Mb, residual: 0Mb Linux version 2.4.25 (root at 198.87.102.60.netdial.caribe.net) (gcc version 3.2.24 On node 0 totalpages: 16384 zone(0): 16384 pages. zone(1): 0 pages. zone(2): 0 pages. Kernel command line: root=/dev/nfs rw nfsroot=198.87.102.60:/home/zl/ELDK/ppc_8f Calibrating delay loop... 307.20 BogoMIPS Memory: 62212k available (1500k kernel code, 464k data, 76k init, 0k highmem) Dentry cache hash table entries: 8192 (order: 4, 65536 bytes) Inode cache hash table entries: 4096 (order: 3, 32768 bytes) Mount cache hash table entries: 512 (order: 0, 4096 bytes) Buffer cache hash table entries: 4096 (order: 2, 16384 bytes) Page-cache hash table entries: 16384 (order: 4, 65536 bytes) POSIX conformance testing by UNIFIX PCI: Probing PCI hardware PCI: Cannot allocate resource region 0 of device 00:1a.0 Linux NET4.0 for Linux 2.4 Based upon Swansea University Computer Society NET3.039 Initializing RT netlink socket Starting kswapd Journalled Block Device driver loaded JFFS2 version 2.2. (C) 2001-2003 Red Hat, Inc. pty: 256 Unix98 ptys configured ttyS0 on PSC1 ttyS1 on PSC2 ttyS2 on PSC3 RAMDISK driver initialized: 16 RAM disks of 16384K size 1024 blocksize loop: loaded (max 8 devices) Uniform Multi-Platform E-IDE driver Revision: 7.00beta4-2.4 ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx Port Config is: 0x11050004 ipb=132MHz, set clock period to 7 GPIO config: 11050004 ATA invalid: 0100 ATA hostcnf: 0300 ATA pio1 : 100a0a00 ATA pio2 : 02040600 XLB Arb cnf: a366 mpc5xxx_ide: Setting up IDE interface ide0... ATA DMA task: 5 Probing IDE interface ide0... hda: Flash Card, CFA DISK drive ide0 at 0xf0003a60-0xf0003a67,0xf0003a5c on irq 45 hda: attached ide-disk driver. hda: 251904 sectors (129 MB) w/0KiB Cache, CHS=984/16/16 Partition check: hda: hda1 Icecube Bank 0: Found 1 x8 devices at 0x0 in 8-bit mode Icecube Bank 0: Found 1 x8 devices at 0x80 in 8-bit mode Amd/Fujitsu Extended Query Table at 0x0040 Icecube Bank 0: CFI does not contain boot bank location. Assuming top. number of CFI chips: 2 cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness. Icecube flash bank 0: Using static image partition definition Creating 5 MTD partitions on Icecube Bank 0: 0x-0x0080 : Spare 0x0080-0x0090 : kernel 0x0090-0x00c0 : initrd 0x00c0-0x00f0 : jffs 0x00f0-0x0100 : Firmware usb.c: registered new driver hub host/usb-ohci.c: USB OHCI at membase 0xf0001000, IRQ 44 host/usb-ohci.c: usb-0, Built-In ohci usb.c: new USB bus registered, assigned bus number 1 hub.c: USB hub found hub.c: 1 port detected NET4: Linux TCP/IP 1.0 for NET4.0 eth0: Phy @ 0x0, type LXT971 (0x001378e2) IP Protocols: ICMP, UDP, TCP, IGMP IP: routing cache hash table of 512 buckets, 4Kbytes TCP: Hash tables configured (established 4096 bind 8192) eth0: config: auto-negotiation on, 100FDX, 100HDX, 10FDX, 10HDX. eth0: Waiting for the link to be up... eth0: status: link up, 100 Mbps Full Duplex, auto-negotiation complete. IP-Config: Complete: device=eth0, addr=198.87.102.210, mask=255.0.0.0, gw=198.87.102.60,
problems on USB
On 30-nov-04, at 7:45, zhonglei wrote: hi thank you for your help! But I am not very clear about your meaning. I have a NFS mount directory in my host computer. In the /home/zl/ELDK/ppc_82xx/proc(in my host),there is no files in it. that's ok, because it should only show on target the pseudo proc filesystem containing runtime system information. Do you have something in /home/zl/ELDK/ppc_82xx/etc/fstab? if so, try the: mount -a command on your target Jaap-Jan So what can I do next? BestRegards zhonglei -- Original Message -- From: Jaap-Jan Boor jjboor at aimsys.nl Date: Tue, 30 Nov 2004 07:00:49 +0100 Hi, did you have a none/proc/bus/usb usbdevfs defaults 0 0 entry in your fstab? Jaap-Jan On 30-nov-04, at 3:32, zhonglei wrote: hi My system is Lite5200 with DENX Embedded Linux running on it.When I tried to enable my USB port to use my u-disk, the problem occured. I have enabled USB support with 'make xconfig'. The reports are as follows: U-Boot 1.1.2 (Nov 12 2004 - 11:46:06) CPU: MPC5200 v1.2 at 462 MHz Bus 132 MHz, IPB 132 MHz, PCI 33 MHz Board: Motorola MPC5200 (IceCube) I2C: 85 kHz, ready DRAM: 64 MB FLASH: 16 MB PCI: Bus Dev VenId DevId Class Int 00 1a 1057 5803 0680 00 In:serial Out: serial Err: serial Net: FEC ETHERNET IDE: Bus 0: OK Device 0: Model: Flash Card Firm: 2N3-0925 Ser#: CF Type: Removable Hard Disk Capacity: 123.0 MB = 0.1 GB (251904 x 512) Device 1: not available Autostarting.Press any key to abort.. Hit any key to stop autoboot: 0 Using FEC ETHERNET device TFTP from server 198.87.102.60; our IP address is 198.87.102.210 Filename 'MPC5200/uImage'. Load address: 0x10 Loading: # ### ## done Bytes transferred = 857559 (d15d7 hex) ## Booting image at 0010 ... Image Name: Linux-2.4.25 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size:857495 Bytes = 837.4 kB Load Address: Entry Point: Verifying Checksum ... OK Uncompressing Kernel Image ... OK Memory BAT mapping: BAT2=64Mb, BAT3=0Mb, residual: 0Mb Linux version 2.4.25 (root at 198.87.102.60.netdial.caribe.net) (gcc version 3.2.24 On node 0 totalpages: 16384 zone(0): 16384 pages. zone(1): 0 pages. zone(2): 0 pages. Kernel command line: root=/dev/nfs rw nfsroot=198.87.102.60:/home/zl/ELDK/ppc_8f Calibrating delay loop... 307.20 BogoMIPS Memory: 62212k available (1500k kernel code, 464k data, 76k init, 0k highmem) Dentry cache hash table entries: 8192 (order: 4, 65536 bytes) Inode cache hash table entries: 4096 (order: 3, 32768 bytes) Mount cache hash table entries: 512 (order: 0, 4096 bytes) Buffer cache hash table entries: 4096 (order: 2, 16384 bytes) Page-cache hash table entries: 16384 (order: 4, 65536 bytes) POSIX conformance testing by UNIFIX PCI: Probing PCI hardware PCI: Cannot allocate resource region 0 of device 00:1a.0 Linux NET4.0 for Linux 2.4 Based upon Swansea University Computer Society NET3.039 Initializing RT netlink socket Starting kswapd Journalled Block Device driver loaded JFFS2 version 2.2. (C) 2001-2003 Red Hat, Inc. pty: 256 Unix98 ptys configured ttyS0 on PSC1 ttyS1 on PSC2 ttyS2 on PSC3 RAMDISK driver initialized: 16 RAM disks of 16384K size 1024 blocksize loop: loaded (max 8 devices) Uniform Multi-Platform E-IDE driver Revision: 7.00beta4-2.4 ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx Port Config is: 0x11050004 ipb=132MHz, set clock period to 7 GPIO config: 11050004 ATA invalid: 0100 ATA hostcnf: 0300 ATA pio1 : 100a0a00 ATA pio2 : 02040600 XLB Arb cnf: a366 mpc5xxx_ide: Setting up IDE interface ide0... ATA DMA task: 5 Probing IDE interface ide0... hda: Flash Card, CFA DISK drive ide0 at 0xf0003a60-0xf0003a67,0xf0003a5c on irq 45 hda: attached ide-disk driver. hda: 251904 sectors (129 MB) w/0KiB Cache, CHS=984/16/16 Partition check: hda: hda1 Icecube Bank 0: Found 1 x8 devices at 0x0 in 8-bit mode Icecube Bank 0: Found 1 x8 devices at 0x80 in 8-bit mode Amd/Fujitsu Extended Query Table at 0x0040 Icecube Bank 0: CFI does not contain boot bank location. Assuming top. number of CFI chips: 2 cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness. Icecube flash bank 0: Using static image partition definition Creating 5 MTD partitions on Icecube Bank 0: 0x-0x0080 : Spare 0x0080-0x0090 : kernel 0x0090-0x00c0 : initrd 0x00c0-0x00f0 : jffs 0x00f0-0x0100 : Firmware usb.c: registered new driver hub host/usb-ohci.c: USB OHCI at membase
problems on USB
On 30-nov-04, at 10:01, zhonglei wrote: It seems we are in the right track! This is the content of /home/zl/ELDK/ppc_82xx/etc/fstab: /dev/nfs/ nfs defaults0 0 none/proc procdefaults0 0 And I have mount -a,but it seems nothing happend! :) ja, now add the line: none/proc/bus/usb usbdevfs defaults 0 0 to fstab, and mount -a again after that you have the linux usb core pseudo filesystem, in which you should find a /proc/bus/usb/devices file that shows all usb devices. How can I see the files in my u-disk? I don't know what a u-disk is, but usb sticks are normally mounted using the scsi emulation layer. Jaap-Jan -- Original Message -- From: Jaap-Jan Boor jjboor at aimsys.nl Date: Tue, 30 Nov 2004 09:13:42 +0100 On 30-nov-04, at 7:45, zhonglei wrote: hi thank you for your help! But I am not very clear about your meaning. I have a NFS mount directory in my host computer. In the /home/zl/ELDK/ppc_82xx/proc(in my host),there is no files in it. that's ok, because it should only show on target the pseudo proc filesystem containing runtime system information. Do you have something in /home/zl/ELDK/ppc_82xx/etc/fstab? if so, try the: mount -a command on your target Jaap-Jan So what can I do next? BestRegards zhonglei -- Original Message -- From: Jaap-Jan Boor jjboor at aimsys.nl Date: Tue, 30 Nov 2004 07:00:49 +0100 Hi, did you have a none/proc/bus/usb usbdevfs defaults 0 0 entry in your fstab? Jaap-Jan On 30-nov-04, at 3:32, zhonglei wrote: hi My system is Lite5200 with DENX Embedded Linux running on it.When I tried to enable my USB port to use my u-disk, the problem occured. I have enabled USB support with 'make xconfig'. The reports are as follows: *** * U-Boot 1.1.2 (Nov 12 2004 - 11:46:06) CPU: MPC5200 v1.2 at 462 MHz Bus 132 MHz, IPB 132 MHz, PCI 33 MHz Board: Motorola MPC5200 (IceCube) I2C: 85 kHz, ready DRAM: 64 MB FLASH: 16 MB PCI: Bus Dev VenId DevId Class Int 00 1a 1057 5803 0680 00 In:serial Out: serial Err: serial Net: FEC ETHERNET IDE: Bus 0: OK Device 0: Model: Flash Card Firm: 2N3-0925 Ser#: CF Type: Removable Hard Disk Capacity: 123.0 MB = 0.1 GB (251904 x 512) Device 1: not available Autostarting.Press any key to abort.. Hit any key to stop autoboot: 0 Using FEC ETHERNET device TFTP from server 198.87.102.60; our IP address is 198.87.102.210 Filename 'MPC5200/uImage'. Load address: 0x10 Loading: # ### ## done Bytes transferred = 857559 (d15d7 hex) ## Booting image at 0010 ... Image Name: Linux-2.4.25 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size:857495 Bytes = 837.4 kB Load Address: Entry Point: Verifying Checksum ... OK Uncompressing Kernel Image ... OK Memory BAT mapping: BAT2=64Mb, BAT3=0Mb, residual: 0Mb Linux version 2.4.25 (root at 198.87.102.60.netdial.caribe.net) (gcc version 3.2.24 On node 0 totalpages: 16384 zone(0): 16384 pages. zone(1): 0 pages. zone(2): 0 pages. Kernel command line: root=/dev/nfs rw nfsroot=198.87.102.60:/home/zl/ELDK/ppc_8f Calibrating delay loop... 307.20 BogoMIPS Memory: 62212k available (1500k kernel code, 464k data, 76k init, 0k highmem) Dentry cache hash table entries: 8192 (order: 4, 65536 bytes) Inode cache hash table entries: 4096 (order: 3, 32768 bytes) Mount cache hash table entries: 512 (order: 0, 4096 bytes) Buffer cache hash table entries: 4096 (order: 2, 16384 bytes) Page-cache hash table entries: 16384 (order: 4, 65536 bytes) POSIX conformance testing by UNIFIX PCI: Probing PCI hardware PCI: Cannot allocate resource region 0 of device 00:1a.0 Linux NET4.0 for Linux 2.4 Based upon Swansea University Computer Society NET3.039 Initializing RT netlink socket Starting kswapd Journalled Block Device driver loaded JFFS2 version 2.2. (C) 2001-2003 Red Hat, Inc. pty: 256 Unix98 ptys configured ttyS0 on PSC1 ttyS1 on PSC2 ttyS2 on PSC3 RAMDISK driver initialized: 16 RAM disks of 16384K size 1024 blocksize loop: loaded (max 8 devices) Uniform Multi-Platform E-IDE driver Revision: 7.00beta4-2.4 ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx Port Config is: 0x11050004 ipb=132MHz, set clock period to 7 GPIO config: 11050004 ATA invalid: 0100 ATA hostcnf: 0300 ATA pio1 : 100a0a00 ATA pio2 : 02040600 XLB Arb cnf: a366 mpc5xxx_ide: Setting up IDE interface ide0... ATA DMA task: 5 Probing IDE interface ide0
Embedded Linux, pthreads and scheduling
Steve, On 30-sep-04, at 19:39, Stephen Williams wrote: [This is probably not unique to ppc linux, but it is imbedded and I am running linux on an embedded pc in this case...] I have a multi-threaded (pthreads) application running on an embedded PPC. One of the threads operates a scanner video input, and I want to give it (and only it) high priority, so that if a device driver wakes it up, it is scheduled as close to now as possible. I code the thread in question to capp pthread_setschedparam to set its policy to SCHED_FIFO and the priority to some number 0. I'm using glibc-ppc_4xx-2.3.1 as packaged in the Denx ELDK-3.0. Can I expect this to work? Is any priority 0 enough to get it priority over other threads, or do I need to give it a high (i.e. 99) priority to get past the sliding priorities of threads with default scheduling? yes, if you run this program as root a priority 1 and class SCHED_FIFO should work as expected. For the particular case I'm seeing, it seems to *not* have any effect. My interrupt handler is activated (I see on the scope) and in the first few cases the response is immediate, but sometimes the response is delayed significantly. Possible. What kernel version do you use? In my experience a 2.4.x kernel with O(1) scheduler, preemptible kernel patch and low latency patch still have significant delays ( 5 ms) sometimes. A 2.4 kernel without these patches can have much longer response times. I didn't experiment with the 2.6 kernel on this particular system yet but 2.6 includes the O(1) scheduler and preemtible kernel patch. By the way, do you not share a lock with a lower priority thread? If the lower priority thread has the lock, your high priority thread needs to wait until it's finished (unlocks). Jaap-Jan Where I look for the problem may depend on whether the collective understanding is that the SCHED_FIFO has the effect I expect. -- Steve WilliamsThe woods are lovely, dark and deep. steve at icarus.com But I have promises to keep, http://www.icarus.com and lines to code before I sleep, http://www.picturel.com And lines to code before I sleep. ___ Linuxppc-embedded mailing list Linuxppc-embedded at ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
ushort fcc_fcce
hi, Why is include/asm-ppc/immap_8260.h: ushort fcc_fcce; and not uint fcc_fcce, as e.g. the fcc event register in hdlc mode uses 32 bits. thanks, Jaap-Jan ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
ushort fcc_fcce
On 27-08-2004 16:53, Dan Malek dan at embeddededge.com wrote: On Aug 27, 2004, at 5:31 AM, Jaap-Jan Boor wrote: Why is include/asm-ppc/immap_8260.h: ushort fcc_fcce; Because in the original documentation I had under NDA many years ago when this was written didn't describe ATM nor HDLC. It listed this as a 16-bit field for Ethernet. I've made a note to change it. ok, thanks Jaap-Jan Thanks. -- Dan ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
uart.c doesn't compile
Hi, I pulled the latest linuxppc-2.5 using bk and try to build for 8xx (FADS). It seems uart.c doesn't build anymore for SMCs: CC arch/ppc/8xx_io/uart.o arch/ppc/8xx_io/uart.c: In function `change_speed': arch/ppc/8xx_io/uart.c:992: warning: implicit declaration of function `m8xx_cpm_setbrg' arch/ppc/8xx_io/uart.c: In function `rs_8xx_init': arch/ppc/8xx_io/uart.c:2689: error: `dp_addr' undeclared (first use in this function) arch/ppc/8xx_io/uart.c:2689: error: (Each undeclared identifier is reported only once arch/ppc/8xx_io/uart.c:2689: error: for each function it appears in.) make[1]: *** [arch/ppc/8xx_io/uart.o] Error 1 make: *** [arch/ppc/8xx_io] Error 2 should dp_addr not be changed in dp_offset? Jaap-Jan -- J.G.J. Boor Anton Philipsweg 1 Software Engineer 1223 KZ Hilversum AimSys bv tel. +31 35 689 1941 Postbus 2194, 1200 CD Hilversum mailto:jjboor at aimsys.nl ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
random ramblings on 8xx patches (long and tedious :-)
On Thu, 2004-07-22 at 19:35, Dan Malek wrote: On Jul 22, 2004, at 1:10 PM, Wells, Charles wrote: ... The real problem is that the MPC850 USB controller was designed for target-mode applications and not host-mode applications. And even in target mode I see unexpected underruns, handshake timeouts and a stucking interrupt endpoint. The software can recover from these errors though. There are Linux versions of software that work fine in many applications. USB in general doesn't rate high on my list of engineering successes. very much right. It works, we don't know why :) I'm never surprised when I plug something in to any kind of system and it doesn't work. -- Dan Jaap-Jan -- J.G.J. Boor Anton Philipsweg 1 Software Engineer 1223 KZ Hilversum AimSys bv tel. +31 35 689 1941 Postbus 2194, 1200 CD Hilversum mailto:jjboor at aimsys.nl ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
List shutting down?
On 14/7/04 2:16, Jon Masters jonathan at jonmasters.org wrote: | See http://lists.linuxppc.org/news.html | | I'm willing to host lists on lists.infradead.org if necessary. I assume | it'll get sorted out some other way though. I have also offered publically to host them on a previous occasion. We can stick them up at http://www.printk.net/ if needed. Is there already more known about the list's archive? Thanks, Jaap-Jan ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Hardware interrupts routines
Hi,
Only when you are in kernel mode (i.e. in a driver/module)
it is possible to register for an interrupt, e.g. like
this:
#include asm/irq.h /* e.g. SIU_INT_IRQ1 for 82xx */
static void irq_handler(int irq, void *my_data,
struct pt_regs *regs)
{
/* handle the irq */
}
init()
{
int irq_flags = 0;
long my_data = 0x12345678;
request_irq(SIU_INT_IRQ1, irq_handler,
irq_flags, my irq, (void*)my_data);
}
When some user land C routine needs to be called when
your interrupt arrives, you need to make a driver
like above that wakes up your user mode program
in irq_handler. This will not give you very
good interrupt latencies however.
Jaap-Jan
On Wed, 2004-06-16 at 16:28, Garcia J?r?mie wrote:
Hi everybody !
As you guess I need some help... Indeed I'm a newbie in Linux embedded
development and I have to work on a linux ppc based board project.
In fact, I have to adapt an existing VxWorks application to a linux
montavista hardhat application.
My problem is the following : I need to find a linux equivalent routine of
the intConnect() VxWorks routine. You can see the man page of taht function
below :
NAME
intConnect( ) - connect a C routine to a hardware interrupt
SYNOPSIS
STATUS intConnect
(
VOIDFUNCPTR * vector, /* interrupt vector to attach to */
VOIDFUNCPTR routine, /* routine to be called */
int parameter /* parameter to be passed to routine */
)
DESCRIPTION
This routine connects a specified C routine to a specified interrupt vector.
The address of routine is generally stored at vector so that routine is
called with parameter when the interrupt occurs. The routine is invoked in
supervisor mode at interrupt level. A proper C environment is established,
the necessary registers saved, and the stack set up.
The routine can be any normal C code, except that it must not invoke certain
operating system functions that may block or perform I/O operations.
This routine generally simply calls intHandlerCreate( ) and intVecSet( ). The
address of the handler returned by intHandlerCreate( ) is what actually goes
in the interrupt vector.
This routine takes an interrupt vector as a parameter, which is the byte
offset into the vector table. Macros are provided to convert between
interrupt vectors and interrupt numbers, see intArchLib.
The only hardware interrupts routine I found through my investigations is the
request_irq(...). But the problem is that request_irq do not allow me to pass
an argument to the handler... So is there a routine that allows it or is
there a way to adapt the request_irq() to my case.
I thougt to declare a global variable to store my param but I use
multitasking. So bad way...
Thanks a lot for helping the newbie that I am...
--
J.G.J. Boor Anton Philipsweg 1
Software Engineer 1223 KZ Hilversum
AimSys bv tel. +31 35 689 1941
Postbus 2194, 1200 CD Hilversum mailto:jjboor at aimsys.nl
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
I2C implementation on MPC8260
On Wed, 2004-05-05 at 11:35, Jos Beck wrote: Hi, I am trying to get some i2c devices (RTC, EEPROM) to run on an MPC8260 with kernel version 2.4.21. I have seen some fragmented information in the kernel source documentation and on this mailing list, but it's not clear to me what parts I can use and what I have to write myself. Could anyone tell me where and how to start? I think you need i2c-core.c, i2c-dev.c, i2c-algo-8260.c and a driver file that set's up (board specific) i2c port settings and irq. I think there are examples in the denx tree. (i2c-pm826.c) This is more or less the standard thing to do: check the denx tree. Jaap-Jan Thanks, Jos -- J.G.J. Boor Anton Philipsweg 1 Software Engineer 1223 KZ Hilversum AimSys bv tel. +31 35 689 1941 Postbus 2194, 1200 CD Hilversum mailto:jjboor at aimsys.nl ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Spurious Interrupts.. 2.4.22 82xx platforms
Andrew, Are you aware of this? http://lists.linuxppc.org/linuxppc-embedded/200211/msg00139.html I'm not sure of this is your problem though Jaap-Jan On May 2, 2004, at 17:02, Andrew Williams wrote: Trying to wrap my mind around where my spurrious interrupts are coming from. I've used some debug code to determine where the spurrious counter was being incremented, in an attempt to see the what/how/why. All occurences are a result of m8260_get_irq() returning -1 (empty SIVEC register). Ideas or pointers as to what might be occuring here? We're using an 8270. Can anyone reference a paper/chat/email that details the nature of the SIVEC/SPINRx solution in linux? Thanks Andrew ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Recognizing compact flash in IDE mode on 8260
Hi, you might check drivers/ide/ppc and either add some support sw there or modify existing direct interface initialization, like cpci405ide.c Jaap-Jan On 28-apr-04, at 0:12, Dixon, Myron @ GNS wrote: We have a custom board that contains two PPC8260 processors. One of the two boots from PPCBoot 1.1.5 and runs linux kernel 2.4.18. I have written several drivers to exercise our on-board hardware. Two books that have been tremendous resources are Linux Device Drivers by Rubin Corbet and Building Embedded Linux Systems by Yaghmour. We are currently booting to an NFS mounted root file system. The next step is to boot to an on-board compact flash device configured in IDE mode per the Toshiba Compact Flash and MPC8260 Interface Design Guide. While I am a reasonbly experienced programmer, my knowledge of the linux kernel is limited to the two books I've cited, searching on this and other mailing lists, and the kernel source. We have gotten PPC Boot to recognize the compact flash device as follows: PPCBoot 1.1.5 (Apr 5 2004 - 11:25:22) MPC8260 Reset Status: External Soft, External Hard MPC8260 Clock Configuration - Bus-to-Core Mult 3x, VCO Div 2, 60x Bus Freq 33-100, Core Freq 100-300 - dfbrg 0, corecnf 0x08, busdf 4, cpmdf 1, plldf 1, pllmf 4 - vco_out 35000, scc_clk 8750, brg_clk 8750 - cpu_clk 21000, cpm_clk 17500, bus_clk 7000 CPU: MPC8260 (Rev 14, Mask B.1 4K25A) at 200.001 MHz Board: MAIN 8260 DRAM: . . . Testing DRAM SIZE: 64 MB Length of PPCBOOT: 257020 bytes Top of RAM usable for PPCBoot at: 0400 Reserving 256k for PPCBoot at: 03fc Reserving 384k for malloc() at: 03f6 Reserving 76 Bytes for Board Info at: 03f5ff00 Stack Pointer at: 03f5fee8 Board info at: 03f5ff00 Available 384k for malloc() at: 03f6 Stack Pointer at: 03f5fee8 MAC ADDR: 00:a0:1e:a8:7b:cf Now running in RAM - PPCBoot at: 03fc FLASH: 1 MB mem_malloc_init: start = 66453504 len = 393216 *** Warning - bad CRC, using default environment In:serial Out: serial Err: serial Reset Ethernet PHY PPCBoot relocated to 03fc IDE: Bus 0: OK Device 0: Model: LEXAR ATA FLASH Firm: Ser#: 11303282139099090092 Type: Removable Hard Disk Capacity: 30.4 MB = 0.0 GB (62336 x 512) - While booting the linux kernel to detect the compact flash device as ide0, I have attempted to use the following command line options idebus=66 ide0=0xea00,0xeb00,7 The parameters for ide0= represent the our UPM settings for chip selects CS0 and CS1 as well as the hardware IRQ7 line. The ide0= parameter causes the kernel to crash. A snap shot of this occurrence is as follows. - bootp BOOTP broadcast 1 got BOOTP packet (src=67, dst=68, len=331 want_len=300) Filtering pkt = 0 Bootfile: /tftpboot/sbc/boot/tm_boot Got good BOOTP ARP broadcast 1 Got good ARP - start TFTP TFTP from server 166.20.228.230; our IP address is 166.20.228.225 Filename '/tftpboot/sbc/boot/tm_boot'. Load address: 0x80 Loading: *# ## done Bytes transferred = 586168 (8f1b8 hex) - bootm ## Booting image at 0080 ... Image Name: Created: 2004-04-27 14:56:09 UTC Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size:586104 Bytes = 572 kB = 0 MB Load Address: Entry Point: Verifying Checksum ... OK Uncompressing Kernel Image ... OK ## Current stack ends at 0x03F5FB40 = set upper limit to 0x03F5F340 ## cmdline at 0x03F5F240 ... 0x03F5F240 bd address = 0x03F5F1F0 memstart= 0x memsize = 0x0400 flashstart = 0xFE00 flashsize = 0x0010 flashoffset = 0x sramstart = 0x03F6 sramsize= 0x0006 immr_base = 0xF000 bootflags = 0x0001 vco = 333.335 MHz sccfreq = 83.333 MHz brgfreq = 83.333 MHz intfreq = 200.001 MHz cpmfreq = 166.667 MHz busfreq = 66.667 MHz ethaddr = 00:A0:1E:A8:7B:CF IP addr = 166.20.228.225 baudrate= 19200 bps No initrd ## Transferring control to Linux (at address ) ... Memory BAT mapping: BAT2=64Mb, BAT3=0Mb, residual: 0Mb Linux version 2.4.18 (mdixon at telecom2.aydin-telecom.com) (gcc version 2.95.3 20010315 // (release)) #835 Tue Apr 27 10:53:07 EDT 2004 On node 0 totalpages: 16384
FEC support for 8260 in kernel 2.4.25
On 24-apr-04, at 1:23, T Michael Turney wrote: Hi Folks, This is my first posting on this list. I am working on a kernel port to an 8260 board that has all three FCCs wired up to PHYs (BCM5221). The first FCC is working fine, but I haven't been successful with getting FCC2 and FCC3 going yet. Is anybody out there successfully using the 2.4.x fcc_enet.c code with all three channels active? I use 2, FCC1 and FCC3 on a dual port phy. just make sure you program the gpio ports correctly. Cheers, T.mike Tools Made Tough Project Consultant (o) 760.728.5401 (c) 760.415.8792 ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
C++ Memory Requirements for PowerQUICC 1
Hi, It depends on your program and C++ code. You probably mention C++ libraries because of templates. If you use a lot of different types (classes) and STL, a lot of templates will be instantiated for your types, which can quickly increase the size of your program(s) (not much unlike to macros in C). In addition, if you abstract 'the bit' with class hierarchies, stream io, etc. instead of using builtin types like 'int' you can create big programs. Jaap-Jan On Apr 2, 2004, at 19:29, vze8n24y at verizon.net wrote: Hi: I would like to run C++ on a PowerQUICC I system that has 8 MB of RAM. I was told by a friend that this was not enough memory to run a C++ program with the C++ libraries. Does anyone have experience with this? Regards, Bob Davis ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
O(1) scheduler for PPC?
On Thu, 25 Mar 2004, Steven Scholz wrote: Hi there, is the backport of Ingo Molnar's O(1) scheduler in the official linux-2.4.2x tree and is it available for the PPC? an up-to-date patch together with the preemptible kernel and low-latency patches for 2.4.25 are available here: http://www.plumlocosoft.com/kernel Thanks, Steven -- J.G.J. Boor Anton Philipsweg 1 Software Engineer 1223 KZ Hilversum AimSys bv tel. +31 35 689 1941 Postbus 2194, 1200 CD Hilversum mailto:jjboor at aimsys.nl ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
O(1) scheduler for PPC?
On Fri, 26 Mar 2004, Jaap-Jan Boor wrote: On Thu, 25 Mar 2004, Steven Scholz wrote: Hi there, is the backport of Ingo Molnar's O(1) scheduler in the official linux-2.4.2x tree and is it available for the PPC? an up-to-date patch together with the preemptible kernel and low-latency patches for 2.4.25 are available here: http://www.plumlocosoft.com/kernel note that, after applying the 'base' patch you need to add the CONFIG_LOLAT option to arch/ppc/config.in and apply thew following change in include/asm-ppc/bitopts.h 285c285 static inline int _sched_find_first_bit(unsigned long *b) --- static inline int sched_find_first_bit(unsigned long *b) Jaap-Jan Thanks, Steven -- J.G.J. Boor Anton Philipsweg 1 Software Engineer 1223 KZ Hilversum AimSys bv tel. +31 35 689 1941 Postbus 2194, 1200 CD Hilversum mailto:jjboor at aimsys.nl -- J.G.J. Boor Anton Philipsweg 1 Software Engineer 1223 KZ Hilversum AimSys bv tel. +31 35 689 1941 Postbus 2194, 1200 CD Hilversum mailto:jjboor at aimsys.nl ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
IBM 440GX, Ocotea...
On Mar 24, 2004, at 23:25, Tom Rini wrote: It seems to be a circuitous route that I don't even understand anymore. Sometime stuff I check in gets there, sometimes not. :-) and you have never found out the conditions when something get's in (only when submitted at friday the 13th or something?) Um, yeah. I'm hoping 2.6 will be different from 2.4 in that regard. :) ok! linuxppc-2.[45] are children of the linux-2.[45] trees, and contain stuff that's not quite ready to go out, _but_will_be_soon_ or has been put in a tree for Linus/Marcelo, but they haven't pulled yet. ok thanks (and linuxppc-2.5 should be used to get something into 2.6?) Jaap-Jan -- Tom Rini http://gate.crashing.org/~trini/ ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
IBM 440GX, Ocotea...
Paul, Much thanks for your explanation, it clarifies a lot. Jaap-Jan On Thu, 25 Mar 2004, Paul Mackerras wrote: Jaap-Jan Boor writes: In addition to this nice tree discussion, I've a question: from what 'official ppc' tree do patches eventually get into the official linux kernel tree(s) at kernel.org? only linuxppc-2.4? Or all? Well, the thing to understand is that there is no automatic, effortless way that code goes into the kernel.org trees. Every change that goes in involves somebody putting together a patch against the current state of the official kernel.org trees, together with a description of what is being changed and why it is being changed, and sending that to Marcelo Tosatti, Andrew Morton or Linus Torvalds. BitKeeper can help to some extent with this, mainly by providing a way for us to send Marcelo/Andrew/Linus a bunch of changes in one go. It doesn't, however, provide any automatic way for changes to get from the linuxppc-2.4 or linuxppc-2.5 trees into their trees. The reason is that with BK, if you pull the changes from one tree into another tree, you have to take all the changes in the first tree that aren't in the second. You can't pick and choose which changesets get transferred. Therefore, we don't ask Marcelo/Andrew/Linus to pull from linuxppc-2.[45] into their trees. There is too much stuff in there that isn't ready, or that I don't agree with, or that I just don't understand. I have taken on the role of ppc32 maintainer, part of which involves sending changes to Marcelo/Andrew/Linus. However, doing that involves work on my part to identify which changes in linuxppc-2.[45] are ready to send, which changes logically go together, and I have to be able to explain the change. When it comes to things like the 8xx/82xx/85xx support, I rely on the maintainers for that area -- Tom Rini and Dan Malek -- to do that work of identifying sets of related changes that are suitable for inclusion in the official trees, and packaging them up with an explanation so that they can be sent upstream. (That can be done either with patches or BK changesets; the amount of work required is pretty much the same either way.) Similarly, for the boot code I look to Tom and for the powermac support I look to Ben Herrenschmidt. For the 4xx stuff there isn't really a maintainer at the moment, unfortunately, except that Matt Porter is looking after the 44x boards. I look after the classic PowerPC core support -- exception handling, memory management, etc., and to some extent the 4xx core support, and the CHRP port. What this boils down to is that for changes in these areas I expect the maintainers for those areas to be packaging up the changes with explanations, ready to go upstream. Anyone is of course welcome to put together a patch + explanation and propose that it go upstream. In such cases I would ask the maintainer for that area for his opinion, or if there isn't a maintainer, I would ask the submitter if they will commit to maintaining that area of the code. If they won't, I would tend to drop the patch unless it is a simple, obviously correct bugfix. One problem we have at present is that there are a number of board ports which don't appear to have a maintainer. Sometimes there are people using those ports but noone taking responsibility for updating it and keeping it working as things change elsewhere in the kernel. Having a maintainer is a prerequisite for the board port to be sent upstream. I hope this clarifies things. If you want the kernel.org trees to support your platform, then I suggest you put together the changes you want to see as patches and send them to me and the maintainer for the subarea. Make sure that the patch comes with a good explanation of the change, and if you think the patch should go upstream, say so. If possible make sure that the patch isn't too large. If it is large, see if you can split it up into smaller patches, each of which contains a logically related set of changes. Regards, Paul. -- J.G.J. Boor Anton Philipsweg 1 Software Engineer 1223 KZ Hilversum AimSys bv tel. +31 35 689 1941 Postbus 2194, 1200 CD Hilversum mailto:jjboor at aimsys.nl ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
IBM 440GX, Ocotea...
On Mar 23, 2004, at 19:24, Dan Malek wrote: Jaap-Jan Boor wrote: from what 'official ppc' tree do patches eventually get into the official linux kernel tree(s) at kernel.org? only linuxppc-2.4? Or all? It seems to be a circuitous route that I don't even understand anymore. Sometime stuff I check in gets there, sometimes not. :-) and you have never found out the conditions when something get's in (only when submitted at friday the 13th or something?) http://penguinppc.org/dev/kernel.shtml tries to explain it. this states you should build/submit patches against kernel.org's trees, which is quite different from linuxppc-2.[45], which is probably Tom Rini's checkout of kernel.org's tree with all ppc patches. Or is it? thanks for your reply, Jaap-Jan -- Dan ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Can't set the schedual parameter of threads in linux
yang,
Are you running your application as root? Also, try to get/set
the pthread schedule parameters in the pthread context itself.
Jaap-Jan
On Mar 11, 2004, at 2:06, yang wrote:
Hello,
I encounter a problem when I transplant application.
There is no effect to the pthread when I call
pthread_setschedparam() function in test program, and it's policy and
priority are stilll zero, not what I expected, after call
pthread_getschedparam(). The codes is as the follow:
#include sched.h
#include pthread.h
#include stdio.h
#include stdlib.h
#include sys/types.h
#include linux/ipc.h
#include linux/msg.h
#include errno.h
#include stddef.h
#include string.h
void * func()
{
while (1);
return;
}
int main()
{
pthread_attr_t tattr;
pthread_t tid;
int policy;
int ret;
int newprio = 20;
struct sched_param param;
ret = pthread_attr_init (tattr);
if (ret != 0)
{
printf(Error in init: %s\n, strerror(errno));
}
ret = pthread_attr_getschedparam (tattr, param);
if (ret != 0)
{
printf(Error in get after init: %s\n, strerror(errno));
}
ret = pthread_attr_setdetachstate(tattr, PTHREAD_CREATE_DETACHED);
if (ret != 0)
{
printf(Error in setdea: %s\n, strerror(errno));
}
ret = pthread_attr_setschedpolicy(tattr, SCHED_RR);
if (ret != 0)
{
printf(Error in setpolicy: %s\n, strerror(errno));
}
param.sched_priority = newprio;
ret = pthread_attr_setschedparam (tattr, param);
if (ret != 0)
{
printf(Error in set: %s\n, strerror(errno));
}
ret = pthread_create (tid, tattr, (int*) func, NULL);
if (ret != 0)
{
printf(Error in create: %s\n, strerror(errno));
}
param.sched_priority = -1;
ret = pthread_getschedparam (tid, policy, param);
if (ret != 0)
{
printf(Error in get after create: %d %s\n, ret,
strerror(errno));
}
printf(policy: %d\tpriority: %d\n, policy, param.sched_priority);
return 0;
}
The output is :
policy: 0priority: 0
Would you like to tell me how to set the policy and priority to
pthreads in Red Hat.? Thank you very much!
Best regards,
yang
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Can't set the schedual parameter of threads in linux
Yang,
You are right, I don't use the pthread_[gs]etschedparam() functions.
I use in the new thread's context the
pthread_attr_getschedpolicy(tattr, policy);
pthread_attr_getschedparam(tattr, param);
functions, and then set the new priority
param.sched_priority = newpriority;
pthread_setschedparam(pthread_self(), policy, param);
Jaap-Jan
On Mar 11, 2004, at 14:10, yang wrote:
Hi,
I did run my program as root, and the key to my problem is why
it works well in Solaris system but not in Red Hat system.
Please copy the follow codes and run it in your system if you
are spare and will. Thank you very much!
Best regards,
yang
yang,
Are you running your application as root? Also, try to get/set
the pthread schedule parameters in the pthread context itself.
Jaap-Jan
On Mar 11, 2004, at 2:06, yang wrote:
Hello,
I encounter a problem when I transplant application.
There is no effect to the pthread when I call
pthread_setschedparam() function in test program, and it's policy
and
priority are stilll zero, not what I expected, after call
pthread_getschedparam(). The codes is as the follow:
#include sched.h
#include pthread.h
#include stdio.h
#include stdlib.h
#include sys/types.h
#include linux/ipc.h
#include linux/msg.h
#include errno.h
#include stddef.h
#include string.h
void * func()
{
while (1);
return;
}
int main()
{
pthread_attr_t tattr;
pthread_t tid;
int policy;
int ret;
int newprio = 20;
struct sched_param param;
ret = pthread_attr_init (tattr);
if (ret != 0)
{
printf(Error in init: %s\n, strerror(errno));
}
ret = pthread_attr_getschedparam (tattr, param);
if (ret != 0)
{
printf(Error in get after init: %s\n, strerror(errno));
}
ret = pthread_attr_setdetachstate(tattr,
PTHREAD_CREATE_DETACHED);
if (ret != 0)
{
printf(Error in setdea: %s\n, strerror(errno));
}
ret = pthread_attr_setschedpolicy(tattr, SCHED_RR);
if (ret != 0)
{
printf(Error in setpolicy: %s\n, strerror(errno));
}
param.sched_priority = newprio;
ret = pthread_attr_setschedparam (tattr, param);
if (ret != 0)
{
printf(Error in set: %s\n, strerror(errno));
}
ret = pthread_create (tid, tattr, (int*) func, NULL);
if (ret != 0)
{
printf(Error in create: %s\n, strerror(errno));
}
param.sched_priority = -1;
ret = pthread_getschedparam (tid, policy, param);
if (ret != 0)
{
printf(Error in get after create: %d %s\n, ret,
strerror(errno));
}
printf(policy: %d\tpriority: %d\n, policy,
param.sched_priority);
return 0;
}
The output is :
policy: 0priority: 0
Would you like to tell me how to set the policy and priority to
pthreads in Red Hat.? Thank you very much!
Best regards,
yang
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Can't set the schedual parameter of threads in linux
On Thu, 11 Mar 2004, Jean-Denis Boyer wrote:
Your program logic is absolutely correct.
I ran it in my embedded PPC environment (as root) and got the following
results:
policy: 2 priority: 20
The problem is elsewhere...
RedHat 9 uses ntpl, that is a difference.
Jean-Denis Boyer, Eng.
M5T Centre d'Excellence en T?l?coms Inc.
4283 Garlock Street
Sherbrooke (Qu?bec)
J1L 2C8 CANADA
(819)829-3972 x241
-Original Message-
From: owner-linuxppc-embedded at lists.linuxppc.org
[mailto:owner-linuxppc-embedded at lists.linuxppc.org]On Behalf Of yang
Sent: 10 mars, 2004 20:07
To: linuxppc-embedded at lists.linuxppc.org
Subject: Can't set the schedual parameter of threads in linux
Hello,
I encounter a problem when I transplant application.
There is no effect to the pthread when I call
pthread_setschedparam() function in test program, and it's
policy and priority are stilll zero, not what I expected,
after call pthread_getschedparam(). The codes is as the follow:
#include sched.h
#include pthread.h
#include stdio.h
#include stdlib.h
#include sys/types.h
#include linux/ipc.h
#include linux/msg.h
#include errno.h
#include stddef.h
#include string.h
void * func()
{
while (1);
return;
}
int main()
{
pthread_attr_t tattr;
pthread_t tid;
int policy;
int ret;
int newprio = 20;
struct sched_param param;
ret = pthread_attr_init (tattr);
if (ret != 0)
{
printf(Error in init: %s\n, strerror(errno));
}
ret = pthread_attr_getschedparam (tattr, param);
if (ret != 0)
{
printf(Error in get after init: %s\n, strerror(errno));
}
ret = pthread_attr_setdetachstate(tattr,
PTHREAD_CREATE_DETACHED);
if (ret != 0)
{
printf(Error in setdea: %s\n, strerror(errno));
}
ret = pthread_attr_setschedpolicy(tattr, SCHED_RR);
if (ret != 0)
{
printf(Error in setpolicy: %s\n, strerror(errno));
}
param.sched_priority = newprio;
ret = pthread_attr_setschedparam (tattr, param);
if (ret != 0)
{
printf(Error in set: %s\n, strerror(errno));
}
ret = pthread_create (tid, tattr, (int*) func, NULL);
if (ret != 0)
{
printf(Error in create: %s\n, strerror(errno));
}
param.sched_priority = -1;
ret = pthread_getschedparam (tid, policy, param);
if (ret != 0)
{
printf(Error in get after create: %d %s\n, ret,
strerror(errno));
}
printf(policy: %d\tpriority: %d\n, policy,
param.sched_priority);
return 0;
}
The output is :
policy: 0priority: 0
Would you like to tell me how to set the policy and
priority to pthreads in Red Hat.? Thank you very much!
Best regards,
yang
--
J.G.J. Boor Anton Philipsweg 1
Software Engineer 1223 KZ Hilversum
AimSys bv tel. +31 35 689 1941
Postbus 2194, 1200 CD Hilversum mailto:jjboor at aimsys.nl
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
MPX8xx: MMC over SPI....
Hi, I agree in this with Wolfgang, I have had very bad experiences with SPI as inter processor communication channel in the past. And then you are in the luxury position of having 'intelligence' (processors) on both sides which can detect and clean up the CPM's SPI mess. Jaap-Jan On Wed, 2004-03-10 at 00:59, Wolfgang Denk wrote: I don't know your exact application, but it always gives me the creeps when I read the phrases mass storage device and SPI bus in the same sentence. I tend to summarize this as follows: mass storage device + SPI bus = need for redesign :-) Best regards, Wolfgang Denk -- Software Engineering: Embedded and Realtime Systems, Embedded Linux Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de By the way, ALL software projects are done by iterative prototyping. Some companies call their prototypes releases, that's all. J.G.J. Boor Anton Philipsweg 1 Software Engineer 1223 KZ Hilversum AimSys bv tel. +31 35 689 1941 Postbus 2194, 1200 CD Hilversum mailto:jjboor at aimsys.nl ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
RAM Disk problems
Kevin, I think I once had the same problem and it was caused by having the kernel cmd line overwritten. You might check that. Jaap-Jan On Wed, 2004-03-10 at 15:31, Kevin A. Sapp wrote: Hello, I am trying to bring up a RAM disk as the root file system. Most everything is working until it come's time to mount it. The logs are below. I noticed in mount_block_root the get_fs_names appears to returning a zero length string. I have tried root=/dev/ram root=/dev/ram0 root=/dev/rd/0 and combinatins with noinitrd. FYI. The RAM disk will be loaded by a bus master and will have to be persistant. Any suggestions? Thanks Kevin = bootm 10 20 ## Booting image at 0010 ... Image Name: Linux-2.4.20 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size:485362 Bytes = 473.10 kB Load Address: Entry Point: Verifying Checksum ... OK Uncompressing Kernel Image ... OK ## Loading RAMDisk Image at 0020 ... Image Name: Kevin Simple RAMDisk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) Data Size:1405884 Bytes = 1.3 MB Load Address: Entry Point: Verifying Checksum ... OK ## initrd at 0x00200040 ... 0x003573FB (len=1405884=0x1573BC) Loading Ramdisk to 01c27000, end 01d7e3bc ... OK kernel addr: machine_init6Memory BAT mapping: BAT2=16Mb, BAT3=8Mb, residual: 7Mb Linux version 2.4.20 (kevin at linux4) (gcc version 3.2.1) #258 Wed Mar 10 07:55:32 EST 2004 setup arch4ADS setup arch On node 0 totalpages: 7936 zone(0): 7936 pages. zone(1): 0 pages. zone(2): 0 pages. Kernel command line: root=/dev/ram rw console=ttyS0,9600 nobats ip=192.168.82.5 console passed ttyS0:0 Checking for registered console ttyS Prefered console -1 ADS init IRQ. NR_IRQS=256 ADS time init ADS calibrate decrementer. FREQ=, tb_ticks_per_jiffy=16 stdio console init serial_console_setup cons:c00ebc48 str:9600 cons-index:0 Calibrating delay loop... 132.71 BogoMIPS Memory: 28828k available (828k kernel code, 288k data, 48k init, 0k highmem) Dentry cache hash table entries: 4096 (order: 3, 32768 bytes) Inode cache hash table entries: 2048 (order: 2, 16384 bytes) Mount-cache hash table entries: 512 (order: 0, 4096 bytes) Buffer-cache hash table entries: 1024 (order: 0, 4096 bytes) Page-cache hash table entries: 8192 (order: 3, 32768 bytes) POSIX conformance testing by UNIFIX ADS init Linux NET4.0 for Linux 2.4 Based upon Swansea University Computer Society NET3.039 Initializing RT netlink socket Starting kswapd devfs: v1.12c (20020818) Richard Gooch (rgooch at atnf.csiro.au) devfs: devfs_debug: 0x0 devfs: boot_options: 0x1 pty: 256 Unix98 ptys configured RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize loop: loaded (max 8 devices) *SERIAL INIT* MPC8260 FCC Ethernet driver BD rings initialised, RBASE=1B8160, TBASE=1B8360 Created eth0 NET4: Linux TCP/IP 1.0 for NET4.0 IP Protocols: ICMP, UDP, TCP, IGMP IP: routing cache hash table of 512 buckets, 4Kbytes TCP: Hash tables configured (established 2048 bind 4096) eth0: OPEN IP-Config: Guessing netmask 255.255.255.0 IP-Config: Complete: device=eth0, addr=192.168.82.5, mask=255.255.255.0, gw=255.255.255.255, host=192.168.82.5, domain=, nis-domain=(none), bootserver=255.255.255.255, rootserver=255.255.255.255, rootpath= NET4: Unix domain sockets 1.0/SMP for Linux NET4.0. RAMDISK: Compressed image found at block 0 Freeing initrd memory: 1372k freed Kernel panic: VFS: Unable to mount root fs on 01:00 0Rebooting in 180 seconds.. ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
searchplugin (off topic)
Hi, For anybody interested, I've attached a mozilla/firefox/etc. searchplugin for this mailing list. Just put in your browser install/searchplugins directory and restart. Jaap-Jan -- J.G.J. Boor Anton Philipsweg 1 Software Engineer 1223 KZ Hilversum AimSys bv tel. +31 35 689 1941 Postbus 2194, 1200 CD Hilversum mailto:jjboor at aimsys.nl -- next part -- # linuxppc-embedded Sherlock for Mozilla # # jjboor at aimsys dot nl March 2004 # search name=linuxppc-embedded description=LinuxPPC - Mail List Archives action=http://lists.linuxppc.org/results.html; searchForm=http://lists.linuxppc.org/results.html; method=GET input name=restrict value=linuxppc-embedded input name=words user interpret resultListStart=!-- RESULT LIST START -- resultListEnd=!-- RESULT LIST END -- resultItemStart=!-- RESULT ITEM START -- resultItemEnd=!-- RESULT ITEM END -- /search
MPX8xx: MMC over SPI....
On Tuesday 09 March 2004 14:18, David Jander wrote: Hi all, I know that Wolfgang Denk is going to flame me right away for this, but I'll do it anyway :-) I am going to write a SPI driver and on top of that a MMC driver for linux for the MPC852T, unless there is something already out there. the SPI driver is there. It's in the Denx kernel src Jaap-Jan Anyone tried this before and has some sources to share? Or pointers to sources? Greetings, -- David Jander Protonic Holland. -- J.G.J. Boor Anton Philipsweg 1 Software Engineer 1223 KZ Hilversum AimSys bv tel. +31 35 689 1941 Postbus 2194, 1200 CD Hilversum mailto:jjboor at aimsys.nl ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
searchplugin
Hi, Slightly off topic, but for anybody interested, I've attached a mozilla/firefox/etc. searchplugin for this mailing list. Just untgz it and put it in your browser install/searchplugins directory. Jaap-Jan -- J.G.J. Boor Anton Philipsweg 1 Software Engineer 1223 KZ Hilversum AimSys bv tel. +31 35 689 1941 Postbus 2194, 1200 CD Hilversum mailto:jjboor at aimsys.nl -- next part -- A non-text attachment was scrubbed... Name: linuxppc.tar.gz Type: application/x-tgz Size: 1326 bytes Desc: not available Url : http://ozlabs.org/pipermail/linuxppc-embedded/attachments/20040309/b0888c63/attachment.bin
early return set_multicast
Hi,
does somebody know why there is an early return;
statement in the set_multicast_list() function
of 8260_io/fcc_enet.c (or cpm2_io/fcc_enet.c)?
static void
set_multicast_list(struct net_device *dev)
{
struct fcc_enet_private *cep;
struct dev_mc_list *dmi;
u_char *mcptr, *tdptr;
volatile fcc_enet_t *ep;
int i, j;
cep = (struct fcc_enet_private *)dev-priv;
return;
/* Get pointer to FCC area in parameter RAM.
*/
ep = (fcc_enet_t *)dev-base_addr;
if (dev-flagsIFF_PROMISC) {
...
--
thanks,
Jaap-Jan
--
J.G.J. Boor Anton Philipsweg 1
Software Engineer 1223 KZ Hilversum
AimSys bv tel. +31 35 689 1941
Postbus 2194, 1200 CD Hilversum mailto:jjboor at aimsys.nl
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
MPC8270 PCI
Hi, I've a short question regarding 82xx PCI (like 8266/8270). As far as I understand the manual, you should always be able to issue config cycles (config read) on the bus, if the 60x bus is in PCI mode. Is this true? I've quite some problems with this, and want to blame the hardware... thanks for any info, Jaap-Jan AimSys b.v. ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
usb hub problem on 8270
Hi, I found some time to adapt m8xxhci.c (for 823/850) to the 8270 with limited success. We use TOUT3 (from timer3) to DREQ0/1 to enable SOF transmitting which works more or less as one of my hubs is detected but after the host driver received the hub's device description, I get a time-out and, well that's it. Even after resetting the 8270 and cpm I'm unable to communicate to the hub: m8xxhci: initializing controller m8xxhci_setup() usb.c: new USB bus registered, assigned bus number 1 m8xxhci_start_controller() hp c029, immap f000, usbprmap f0008b00, usbregs f0011b60, cp f00119c0 m8xxhci:MPC8270 mask 0 m8xxhci: USING CLK8 for USB clock! m8xxhci: ring sizes: rx 32, tx 40 endpoint 0 0x140, epb f140 rstate f0008b08 set up tx ring @ c029 set up rx ring @ f170 tbptr 0278 usep4190208 @ f0011b64 m8xxhci: assert reset m8xxhci: enable USB controller m8xxhci_timer_setup() m8xxhci: timer, intfreq 26600, busfreq , count 995 m8xxhci: timer bytes/count 1.28 m8xxhci: usb bus is idle usb.c: kmalloc IF c026cb00, numif 1 usb.c: new device strings: Mfr=0, Product=2, SerialNumber=1 usb.c: USB device number 1 default language ID 0x0 Product: USB MPC8xx Root Hub SerialNumber: f0011b60 hub.c: USB hub found hub.c: 1 port detected hub.c: standalone hub hub.c: individual port power switching hub.c: no over-current protection hub.c: Port indicators are not supported hub.c: power on to power good time: 2ms hub.c: hub controller current requirement: 0mA hub.c: port removable status: R hub.c: local power source is good hub.c: no over-current condition exists rh_submit_urb() int pipe hub.c: enabling power on all ports rh_port_power(1) usb.c: hub driver claimed interface c026cb00 m8xxhci: initializing done idle_bus() 1; d+ one, d- zero, connect full-sp hub.c: port 1, portstatus 101, change 1, 12 Mb/s hub.c: port 1 connection change hub.c: port 1, portstatus 101, change 1, 12 Mb/s hub.c: port 1, portstatus 101, change 0, 12 Mb/s portstatus 101, change 0, 12 Mb/s hub.c: port 1, portstatus 101, change 0, 12 Mb/s hub.c: port 1, portstatus 101, change 0, 12 Mb/s rh_port_reset(1) m8xxhci: assert reset hub.c: port 1, portstatus 103, change 0, 12 Mb/s hub.c: new USB device NULL-1, assigned address 2 usb.c: kmalloc IF c026cce0, numif 1 usb.c: new device strings: Mfr=0, Product=2, SerialNumber=0 usb.c: USB device number 2 default language ID 0x409 Product: Standard USB Hub hub.c: USB hub found hub.c: 4 ports detected hub.c: standalone hub hub.c: ganged power switching hub.c: global over-current protection hub.c: Port indicators are not supported hub.c: power on to power good time: 100ms hub.c: hub controller current requirement: 64mA hub.c: port removable status: hub.c: local power source is good hub.c: no over-current condition exists hub.c: enabling power on all ports usb.c: hub driver claimed interface c026cce0 complete_qe(qe=c02910fc,status=-110) hub.c: nonzero status in irq -110 looking in /proc/driver/usb I see some timeouts: USB host controller v1.2: controller enabled root hub port state connected, status CCS PES PPS oe 1; bus 10 idle 1 ints: cpm 66, timer 367332, isrs 367385 idle 66, rst 0, bsy 0, rxb 24, txb 46 errs: tx0 19, timeout 19, underrun 0 rx 0, nak 0, stall 0, mismatch 0 comp: iso 0, intr 2, ctrl 14, bulk 0 root hub sends 1441 retransmits19 tx restarts19 frame lists: current c0294360, next c0294394 active_qe: current: c0294360, total_bytes 0 next: c0294394, total_bytes 0 event message: event logging: disabled Nothing that is connected to the hub is detected (obviously) Does somebody has had some similar problems with 8xx? Might it be my SOF timing which is not accurate? thanks for any advise, Jaap-Jan ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
EXT_DIRECT IDE Mode
David, Should there not be a call to the 8xx init function between #ifdef CONFIG_IDE_EXT_DIRECT / #endif in driver/ide/ide.c ? There are a lot such init calls there Jaap-Jan On Thu, 2004-02-12 at 19:00, DavidHo at nanometrics.ca wrote: The EXT_DIRECT item is already there in the configuration menu. I thought it has been fully implemented in that version, until I saw the functions are not being called in platform_init. Base on your knowledge, which kernel version has this mode (MPC8xx IDE) fully working? And do you know the work involved in porting the support to 2.4.18? I am gauging which is the easier route moving all the changes I have already made to 2.4.2x or porting the changes to 2.4.18. David I'm using a variant of the 2.4.18 kernel from timesys. The kernel is compiled with those settings. (in your email) I had to add a call to m8xx_ide_init in m8xx-setup.c at the end of platform_init. I can only find these defines in ide-m8xx.c. I am thinking there must be more to it than the one file. Hmm. 2.4.18 is pretty old. I don't know if there's support for MPC8xx IDE! CONFIG_IDE_EXT_DIRECT was introduced long (!) after CONFIG_IDE_8xx_PCCARD and CONFIG_IDE_8xx_DIRECT. Did you add the code for IDE_EXT_DIRECT yourself? Steven ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Booting time
On Feb 9, 2004, at 2:44 PM, Wolfgang Denk wrote: For a standard system with 50 MHz CPU and 50 MHz bus clock I can demonstrate that it takes not more than 3...4 seconds from power on until the first application process is running. Wolfgang, What kind of setup is that? A very small ramdisk or flash disk? Does the (u-) boot loader do extensive ram tests? thanks, Jaap-Jan Best regards, Wolfgang Denk -- See us @ Embedded World, Nuremberg, Feb 17 - 19, Hall 12.0 Booth 440 Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de It is dangerous to be right on a subject on which the established authorities are wrong.-- Voltaire ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Error encountered when make of gcc-3.3.2
Thamarai,
you need some patches to cross build gcc 3.x, but better
use crosstool, it includes the patches needed, both
for the compiler and glibc, and a script to build and
install everything.
http://www.kegel.com/crosstool/
Jaap-Jan
On Thu, 2004-02-05 at 07:46, Thamarai Selvan wrote:
hi all,
i am currently building my toolchain for powerpc i encountered the
following error during MAKE
could anyone help me out in this regard
Thanks in advance
ERROR
if [ -f stmp-dirs ]; then true; else touch stmp-dirs; fi
/root/Thamarai/gcc-3.3.2/gcc/xgcc -B/root/Thamarai/gcc-3.3.2/gcc/
-B/usr/local/powerpc-linux/bin/ -B
/usr/local/powerpc-linux/lib/ -isystem /usr/local/powerpc-linux/include -O2
-DIN_GCC -DCROSS_COMPIL
E -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes
-isystem ./include -fPIC -g
-DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED -Dinhibit_libc -I. -I. -I. -I./.
-I./config -I./../include -f
PIC -mstrict-align -DL_muldi3 -c ./libgcc2.c -o libgcc/./_muldi3.o
In file included from tconfig.h:22,
from libgcc2.c:36:
config/rs6000/linux.h:89:20: signal.h: No such file or directory
In file included from tconfig.h:22,
from libgcc2.c:36:
config/rs6000/linux.h:98: error: parse error before stack_t
config/rs6000/linux.h:98: warning: no semicolon at end of struct or union
config/rs6000/linux.h:100: error: parse error before uc_sigmask
config/rs6000/linux.h:100: warning: type defaults to `int' in declaration
of `uc_sigmask'
config/rs6000/linux.h:100: warning: data definition has no type or storage
class
config/rs6000/linux.h:99: error: storage size of `uc_mcontext' isn't known
make[2]: *** [libgcc/./_muldi3.o] Error 1
make[2]: Leaving directory `/root/Thamarai/gcc-3.3.2/gcc'
make[1]: *** [stmp-multilib] Error 2
make[1]: Leaving directory `/root/Thamarai/gcc-3.3.2/gcc'
make: *** [all-gcc] Error 2
With Regards,
Thamarai Selvan.G
(: 91-22-27612571, 27621100 X 4115
Life - endless river of dreams, smiles in the portray of an artist
- Thams
-- next part --
--- gcc-3.3.1/gcc/config/rs6000/linux.h.orig2003-08-26 10:14:17.0
-0500
+++ gcc-3.3.1/gcc/config/rs6000/linux.h 2003-08-26 10:22:25.0 -0500
@@ -83,82 +83,7 @@
state data appropriately. See unwind-dw2.c for the structs. */
#ifdef IN_LIBGCC2
-#include signal.h
-
-/* During the 2.5 kernel series the kernel ucontext was changed, but
- the new layout is compatible with the old one, so we just define
- and use the old one here for simplicity and compatibility. */
-
-struct kernel_old_ucontext {
- unsigned long uc_flags;
- struct ucontext *uc_link;
- stack_t uc_stack;
- struct sigcontext_struct uc_mcontext;
- sigset_t uc_sigmask;
-};
enum { SIGNAL_FRAMESIZE = 64 };
#endif
-#define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \
- do { \
-unsigned char *pc_ = (CONTEXT)-ra;
\
-struct sigcontext *sc_;\
-long new_cfa_; \
-int i_;\
- \
-/* li r0, 0x; sc (sigreturn old) */ \
-/* li r0, 0x0077; sc (sigreturn new) */ \
-/* li r0, 0x; sc (rt_sigreturn old) */ \
-/* li r0, 0x00AC; sc (rt_sigreturn new) */ \
-if (*(unsigned int *) (pc_+4) != 0x4402) \
- break; \
-if (*(unsigned int *) (pc_+0) == 0x3800
\
- || *(unsigned int *) (pc_+0) == 0x3877) \
- {
\
- struct sigframe { \
- char gap[SIGNAL_FRAMESIZE]; \
- struct sigcontext sigctx; \
- } *rt_ = (CONTEXT)-cfa;\
- sc_ = rt_-sigctx; \
- }
\
-else if (*(unsigned int *) (pc_+0) == 0x3800 \
-|| *(unsigned int *) (pc_+0) == 0x38AC)\
- {
\
- struct rt_sigframe {\
- char gap[SIGNAL_FRAMESIZE]; \
- unsigned long _unused[2];
mpc 8270 usb
Hi, Does anybody have some experience using the usb controller of the cpm on the 8270? We see quite some problems (e.g. the cpm stops transmitting or not generating tx interrupts) any experience would be welcome, thanks Jaap-Jan ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
cant't stop program
Hi, I sometimes (!) see the same problem when running from serial console. Telnet works ok. I did change in my kernel driver/char/tty_io.c to set noctty = 0; It seems that in shell/ash.c from busybox the call (pgrp = tcgetpgrp(fd)) returns an error code. Jaap-Jan On Mon, 2004-01-05 at 05:11, Dan Kegel wrote: sun-zj wrote: After the denk's instruction, I can run the linuxppc-2.4.23 on PPC8xx without too much difficulty. But when running some programming , I want to terminate it like I do on PC by press Ctrl+C. It doesn't work at all :(. It can work under the U-boot environment. I wonder whether this is the problem of Linux os Or Kermit? I have seem problems like that when running from serial console under Busybox. I think busybox's init is buggy. Does the problem happen when you telnet in from another computer, or only on a serial console? - Dan ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
8270 performance
On 8-dec-03, at 22:11, Jean-Denis Boyer wrote: Ricardo, Jaap-Jan, I would expect the bogomips number to be somewhere near the core clock (like 8xx). Well, I think the numbers are pretty fair, assuming that the bogomips number reflect a certain amount of external memory accesses at 66 MHz external bus clock. It has more to do with pipelining! Hopefully, there ain't any memory access during calibration... (except, of course, when the instruction cache is disabled!) I didn't look at the documentation, but the execution of a branch probably occurs later in the pipeline of a 8260 than for the 860. It probably looses one more cycle. The calibration relies on the execution speed of function __delay (arch/ppc/kernel/misc.S), which loops on a branch instruction 'bdnz'. Fortunately, the number of bogomips will increase linearly with the core clock. (These are approximations) For 8260: 200MHz = 66M bdnz per second = 133BogoMips 266= 88M = 176 400= 133M= 266 For 860: 50MHz = 25M bdnz per second = 50BogoMips Ok, that's a nice explanation, thanks! Jaap-Jan Regards, Jean-Denis Boyer, Eng. M5T Centre d'Excellence en T?l?coms Inc. 4283 Garlock Street Sherbrooke (Qu?bec) J1L 2C8 CANADA (819)829-3972 x241 ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
busybox problem
hi, rc.sh is a script so needs /bin/sh or something do you use shared libraries? That might give problems Jaap-Jan On Tue, 9 Dec 2003, AlessandroPPC wrote: Hi to all, To solve a problem with ram root filesystem Wolfgang Denk has suggestes to me to use his SELF ramdisk image. I have successfully used his package. But I have found a problem with BusyBox init, when T have tried to customized the init board configuration. The problem is related to /etc/rc.sh init script, in fact editing rc.sh and rebuilding the ramdisk image the output init is the following: Bummer, could not run '/etc/rc.sh': No such device or directory Notice that /etc/rc.sh is present, is an exutable file and has root privileges. Any suggestion is appreciated. R.R.C.S.C. Thanks to all Regards, Alessandro -- --- J.G.J. Boor Anton Philipsweg 1 Software Engineer 1223 KZ Hilversum AimSys bv tel. +31 35 689 1941 Postbus 2194, 1200 CD Hilversum mailto:jjboor at aimsys.nl ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
mpc / linux kernel - user space
On Fri, 2003-11-28 at 16:42, Dan Malek wrote: Jaap-Jan Boor wrote: If you want to send a signal to user code, you can use kill_proc() I think. IMHO, trying to use signals to propagate a hardware interrupt to a user application is complicated and has design flaws (what happens if the application misses an interrupt or gets blocked for some reason). Fortunately I never used it (that's the 'I think') A couple of other methods that I find simple and use extensively are multi-threading the application and then using a different minor ID device to wait on a read() or ioctl() to simply return. The driver just uses the standard sleep/wakeup mechanisms to synchronize with the application. Another, and I think most useful, method is to implement a select/poll entry point in the driver. It provides the most flexibility when waiting for various events, plus provides a timeout should something fail to function properly. Yes, especially the timeout is nice as 'this should never happen' failures never happens except with the customer Jaap-Jan -- Dan ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
mpc / linux kernel - user space
Hi Juergen, What I more ment with 'signal your application process' is you have a user thread block waiting in the read() system call of your driver and your driver will wake up that blocking read, so the application thread returns from read. If you want to send a signal to user code, you can use kill_proc() I think. Jaap-Jan On Thu, 2003-11-27 at 19:08, Juergen Oberhofer wrote: Thank you! You mean that the application should install a signal handler and the module sends on every interrupt a signal to the application process. Do you know, Which function does exist to send a signal? I guess, the module has to know the pid of the application process? How can the module be informed about it? Regards, Juergen On Thu, 27 Nov 2003, Jaap-Jan Boor wrote: Hi Juergen, That's normally not something you do and I don't know if it's possible. Application code normally communicates with your driver code using system calls (read/write). So either your appl procedure must be part of your module, or you must signal e.g. a user thread the timer interrupt happened, so the thread can execute that code. Hope this helps, Jaap-Jan On 27-nov-03, at 17:07, Juergen Oberhofer wrote: Hi, I have a module and an application program in user space: The Module performs the following task: at init it initializes the cpm timer register of the mpc823, such that an interrupt is generated every x microseconds. Thus, I installed an interrupt handling function f that handles the timer interrupts. My problem is that the module / the interrupt handling function should execute a procedure defined in the application program. How can I pass a pointer (which points to that function) from the appl.program to the module, such that the handler can execute this function every x milliseconds? I thought to create a procedure in the module that accepts a function pointer as argument. But how can I achieve, that this module procedure is visible to the application program? Does somebody have a suggestion or know another way to do it? Regards, Juergen ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Réf. : Re: mpc / linux kernel - user space
On Fri, 2003-11-28 at 10:21, Aain_Devarenne%ZODIAC at zodiac.com wrote:
Hi everybody
I 'm pending on the same problem as Juergen,
- How can a User Space Thread Wait for a signaling event set by KERNEL ?
e.g. issue a read on some device driver (/dev/your driver
which will block until an interrupt has occured.
something like this:
DECLARE_WAIT_QUEUE_HEAD(mydriver_queue);
ssize_t mydriver_read(
struct file *filp,
char *buf,
size_t count,
loff_t *f_pos)
{
/* wait on interrupt */
while (1) {
interruptible_sleep_on(mydriver_queue);
if (signal_pending (current)) /* a signal arrived */
return -ERESTARTSYS; /* tell the fs layer to handle it */
else break;
}
return 0;
}
void mydriver_irqhandler(unsigned long arg)
{
wake_up_interruptible(mydriver_queue);
}
Jaap-Jan
- Can an IOCTL return pending, and then do a completion after the event ?
- Can we pass an Handle by IOCTL to Kernel from user space ?
Ps: Calling a pointeur in UserSpce seems a bit weird and unsecure !!!
Regards Alain Devarenne
Hi Juergen,
That's normally not something you do and I don't know if it's possible.
Application code normally communicates with your driver code using
system
calls (read/write). So either your appl procedure must be part
of your module, or you must signal e.g. a user thread the timer
interrupt happened, so the thread can execute that code.
Hope this helps,
Jaap-Jan
On 27-nov-03, at 17:07, Juergen Oberhofer wrote:
Hi,
I have a module and an application program in user space:
The Module performs the following task: at init it initializes the cpm
timer register of the mpc823,
such that an interrupt is generated every x microseconds. Thus, I
installed an interrupt handling function f that handles the timer
interrupts.
My problem is that the module / the interrupt handling function should
execute a procedure defined in the application program. How can I pass
a
pointer (which points to that function) from the appl.program to the
module, such that the handler can execute this function every x
milliseconds? I thought to create a procedure in the module that
accepts
a function pointer as argument. But how can I achieve, that this module
procedure is visible to the application program? Does somebody have a
suggestion or know another way to do it?
Regards,
Juergen
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mpc / linux kernel - user space
Hi Juergen, That's normally not something you do and I don't know if it's possible. Application code normally communicates with your driver code using system calls (read/write). So either your appl procedure must be part of your module, or you must signal e.g. a user thread the timer interrupt happened, so the thread can execute that code. Hope this helps, Jaap-Jan On 27-nov-03, at 17:07, Juergen Oberhofer wrote: Hi, I have a module and an application program in user space: The Module performs the following task: at init it initializes the cpm timer register of the mpc823, such that an interrupt is generated every x microseconds. Thus, I installed an interrupt handling function f that handles the timer interrupts. My problem is that the module / the interrupt handling function should execute a procedure defined in the application program. How can I pass a pointer (which points to that function) from the appl.program to the module, such that the handler can execute this function every x milliseconds? I thought to create a procedure in the module that accepts a function pointer as argument. But how can I achieve, that this module procedure is visible to the application program? Does somebody have a suggestion or know another way to do it? Regards, Juergen ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Preemptive Kernel and MPC8xx ???
On Tue, 2003-11-25 at 09:13, Steven Scholz wrote: Hi, On Mon, 24 Nov 2003, Jaap-Jan Boor wrote: Yes I do on 2.4.20 and 2.4.22 from kernel.org. So far all seems to work but didn't do any measurements on it. (I both use the preempt and low-latency patches) Have you writting your own device drivers? How did you make them preemptable? I didn't... I still assume the kernel will lock e.g. the same SIU irq Marius Groeger wrote: AFAIK, you can pretty much drop the low-latency patch in favor of using the lock-breaking patch. It is also available from Robert Love at the cited home page. How about homemade device drivers when using the lock-breaking patch? Thanks! -- Steven Scholz imc Measurement Control imc Me?systeme GmbH Voltastr. 5 Voltastr. 5 13355 Berlin13355 Berlin Germany Deutschland fon: +49 30 467090-0Tel: 030 / 467090-0 fax: +49 30 4631576 fax: 030 / 4631576 ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Preemptive Kernel and MPC8xx ???
On Wed, 2003-11-26 at 16:08, Steven Scholz wrote: Marius Groeger wrote: AFAIK, you can pretty much drop the low-latency patch in favor of using the lock-breaking patch. It is also available from Robert Love at the cited home page. Rob Love wrote me: Is it correct that your lock-break does basicly the same as Andrew Morton's low-latency patches? Where is the big difference? Yes, basically the same thing. Lock-break is a version of low-latency that is optimized for use with the preemptive kernel. You might as well just use low-latency, as Andrew is keeping that more up to date. And that's what I noticed when looking and the download pages... That leaves three options: (a) Use only preempt-kernel (b) Use only low-latency (c) Use preempt-kernel + low-latency Right? Yes, I use (c) ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Preemptive Kernel and MPC8xx ???
Hi, Yes I do on 2.4.20 and 2.4.22 from kernel.org. So far all seems to work but didn't do any measurements on it. (I both use the preempt and low-latency patches) Jaap-Jan On 23-nov-03, at 13:02, Steven Scholz wrote: Hi there, is somebody actually using the preemptive kernel patches that can be found at http://www.kernel.org/pub/linux/kernel/people/rml/preempt-kernel/v2.4/ on MPC8xx boards? If so which kernel version? Thanks a million! Steven ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Preemptive Kernel and MPC8xx ???
On Mon, 2003-11-24 at 09:01, Steven Scholz wrote: Hi, is somebody actually using the preemptive kernel patches ... Yes I do on 2.4.20 and 2.4.22 from kernel.org. So far all seems to work but didn't do any measurements on it. So you're using vanilla 2.4.22 on your MPC8xx board!? yes, am I stupid? Currently I use smc uart, scc ethernet and a modified cpm_spi driver (from the great Denx) with interrupt handling, my 850 board boots ok from nfsroot (I both use the preempt and low-latency patches) Sound interessting. Could you please give me a link to find the mentioned low-latency patches. it comes from Andrew Morton's page http://www.zip.com.au/~akpm/linux/schedlat.html I you have to enable this by hand in arch/ppc/config.in (look at arch/i386/config.in) with bool 'Low latency scheduling' CONFIG_LOLAT dep_bool 'Control low latency with sysctl' CONFIG_LOLAT_SYSCTL $CONFIG_LOLAT Thanks, Steven ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Ramdisk trivial question
Hi Gianfranco, Isn't busybox a good option? A large part of your ramdisk is filled with binaries and libraries (glibc is big) which can be included in a single static binary (busybox) Jaap-Jan On Mon, 2003-11-24 at 11:25, Ing.Gianfranco Morandi wrote: Dear friends, in our project we have always used the NFS to run linux over an 8260 custom board. Now since the activity is almost stable we have tried to build the root filesystem on ramdisk. Obviously we have followed all the main rules which are contained into several good books, but an important choice is always left to the user: what are the components of filesystem?. The answer to this of course depend on several factors which are not the scope of this e-mail. The question is: The ELDK 2.01 package (which is currently being used in our system) is too large to be fitted into a ramdisk, while the minimum filesystem does not allow to be used in our midrange application. Does anybody have or can indicate where can we find an almost complete filesystem scheme (for instance based on the ELDK packages)? Any help would be apreciated Many thanks Gianfranco ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Preemptive Kernel and MPC8xx ???
On 24-nov-03, at 17:35, Marius Groeger wrote: On Mon, 24 Nov 2003, Jaap-Jan Boor wrote: Yes I do on 2.4.20 and 2.4.22 from kernel.org. So far all seems to work but didn't do any measurements on it. (I both use the preempt and low-latency patches) AFAIK, you can pretty much drop the low-latency patch in favor of using the lock-breaking patch. It is also available from Robert Love at the cited home page. Yes, thanks, I know. Is it better? I thought both low-latency and lock-break do more or less the same. Jaap-Jan Marius -- Marius Groeger mgroeger at sysgo.de Project Manager SYSGO Real-Time Solutions AG | Embedded and Real-Time Software Am Pfaffenstein 14 55270 Klein-Winternheim, Germany Voice: +49-6136-9948-0 | FAX: +49-6136-9948-10 www.sysgo.de | www.elinos.com | www.osek.de ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
USB for mpc8270/80
Hi, I need this too and am looking at the 850/823 USB host driver which should work on the 8270 as well. Jaap-Jan On Mon, 2003-11-10 at 16:17, Chris Simmonds wrote: Hi, Has anyone got a USB driver for the SCC on the mpc8270/8280? Anyone interested in having one if one doesn't exist already? Chris. -- Chris Simmonds2net Limited chris at 2net.co.uk http://www.2net.co.uk/ Tel: +44 (0)1962 869003 Fax: +44 (0)870 056 7556 If it's not connected, it's not effective(tm) ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
linux ram size
Hi, I think you just need to pass in your bd_t structure the proper amount of ram to kernel, so it looks ppc boot pass someting else (16MB) to the kernel. Jaap-Jan On Fri, 2003-09-19 at 12:51, somshekar chandrashekar kadam wrote: hi , Ineed to know can i run my linux with 8mb of ram , what changes i need to do with my mpc860 linuxppc code as i see he is mapping 8mb and again 8mb , totally 16mb he is using , soi am not getting anything proper , it hangs after uncompressing the kernel ,i use ppcboot . my ram size is 8mb pls mail to this id Thanksin advance Somshekar ___ Art meets Anesthesia; Shefali Weds Dr. Raman. Rediff Matchmaker strikes another interesting match !! Visit http://matchmaker.rediff.com?1 ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
mbx860
look at http://www.denx.de works great. Includes toolchain, kernel sources and supports a range of PowerPC processors. The MBX board is supported by the standard kernel also. Jaap-Jan On Tue, 2003-09-16 at 16:10, Amit.Lubovsky at infineon.com wrote: Hi, I want to run Linux on MBX860-006c, Could anyone please let me know from where I can get sources and tool chain For this task ? Best regards, Amit. ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Unable to mount jffs2 file system
Rakesh, in init/main.c you can add to root_dev_names[] your root device (e.g. mtdblock2 0x1f02). You have to specify somehow to use this device then, as kernel parameter. I use root_string in arch/ppc/[mbxboot][simple]/misc.c: char*root_string = root=/dev/mtdblock2 rw init=/linuxrc; Jaap-Jan Rakesh jagota wrote: Hi all, I am working on custom design board based on IBM405 PPC. I am using OpenBios code and Linux -2.4.17 version from montavista. I have compiled the kernel with JFFS2 support. In linux/drivers/mtd/maps/redwood.c files, we have modified the partitions as per our board Our board is having 4MB flash and 32MB sdram. #define WINDOW_ADDR 0xFFC0 #define WINDOW_SIZE 0x0040 we filled the redwood_flash_partitions structure as below name: Redwood kernel, ///dev/mtd0 offset: 0x0001, size: 0x0011 name: Redwood OpenBIOS Vital Product Data, ///dev/mtd1 offset: 0x, size: 0x0001, mask_flags: MTD_WRITEABLE name: Redwood filesystem, ///dev/mtd2 offset: 0x0011, size: 0x002D name: Redwood OpenBIOS, ///dev/mtd3 offset: 0x003E, size: 0x0002, mask_flags: MTD_WRITEABLE /* force read-only */ i have created a jff2 image and flashed in the mtd2 block. But while booting i am getting kernel panic === kernel panic: I have no root and I want to scream === how to tell the kernel that the root filesystems is in mtdblock2 Thanks Regards, rakesh -- J.G.J. Boor Anton Philipsweg 1 Software Engineer 1223 KZ Hilversum AimSys bv tel. +31 35 689 1941 Postbus 2194, 1200 CD Hilversum mailto:jjboor at aimsys.nl ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
MPC8270
Hi, Is there already some experience with linux on the MPC8270 and it's PCI bus? thanks, Jaap-Jan --- J.G.J. Boor Lucent Technologies Nederland b.v. Room: BE-525 Optical Networking Group TMS Data Phone: +31 (0)35 687 4721 Larenseweg 50, P.O. Box 1168, Fax: +31 (0)35 687 5976 1200 BD, Hilversum, The Netherlands mailto:jjboor at lucent.com ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
MTD problem for Intel Flash
Hi Shenrong, I have the same problem. I solved it by making a rather ugly patch. I changed the 8xx reset vector code to first put flash in Ready state (reset the flash state machine by writing 0x5050) Jaap-Jan Hi, I met a problem when using JFFS2/MTD with Intel CFI Flash.I mount JFFS2 fs on a MTD partition and copy a file to JFFS2 fs, then umount the JFFS2 fs and reboot the system. The bootloader(PPCBoot) crashes around the first instruction. I check the Flash with BDI, and find the Flash in the Status state(i.e. 0x00800080). The Intel CFI Flash is supported in file cfi_cmdset_0001.c. After the read/write/erase operations, the Flash is not reset to Ready state(what I think is for increasing the performance). This doesn't happen with AMD CFI Flash(impled in cfi_cmdset_0002.c). Even the umount operation(with cfi_intelext_sync() called ) won't reset the Flash to Ready state. So run from Flash after reboot won't success except Hard reset. I think the Flash should be reset to Ready state at least in cfi_intelext_sync(), which will be called whenever the MTD partition is closed. Maybe I have missed sth. Any ideas? Thanks. Shenrong --- J.G.J. Boor Lucent Technologies Nederland b.v. Room: BE-525 Optical Networking Group TMS Data Phone: +31 (0)35 687 4721 Larenseweg 50, P.O. Box 1168, Fax: +31 (0)35 687 5976 1200 BD, Hilversum, The Netherlands mailto:jjboor at lucent.com ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
PowerMac vs. Intel for PowerPC Development Host
Brian, I think one advantage of using a mac with linuxppc as host (I use that @ home) is that you can use newer compiler/library versions a little bit more easy. I wasn't able yet to cross compile gcc-3.x for ppc on Solaris host, it worked however on the mac. Jaap-Jan brian.auld at adic.com wrote: A while back I wrote an email to this list regarding development kit suggestions. Based mainly on feedback from this email, I am currently moving in the Intel/ELDK direction. Out of all the feedback I received, only one person suggested developing on a PowerMac based Linux box, thus eliminating the need for cross-compiling. I have become more interested in this option as some people in our company have noted that cross-compiling embedded linux presented problems on past projects when it came to building certain 3rd party applications. In the Intel vs. Mac debate for a linux development host for embedded ppc development, if money was not an issue, would I get more PowerMac recommendations?? Thanks, -- Brian -- J.G.J. Boor Room: BE-525 Lucent Technologies Nederland b.v. Phone: +31 35 687 4721 Optical Networking Group TMS DataFax: +31 35 687 5976 P.O. Box 1168, 1200 BD, Hilversum, The Netherlands mailto:jjboor at lucent.com ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
C++ Library recommendations ...
Jim, I just use libstd++ coming with gnu g++, it's not too big (shared ~300k) compared to glibc (shared ~1.2 M) when linking statically, the linker normally only takes what you need, so this will be less. Jaap-Jan Hello, I have currently have some applications running with glibc/ulibc ... For porting purposes I would find it nice if there were some nice and small C++ libs supporting basic STL features (sets, vectors, lists) and things like iosstreams ... Anyone have any recommendations ... I believe last time I checked most C++ libs are rather large ?? Any advice would be great ... thanks ... Jim --- J.G.J. Boor Lucent Technologies Nederland b.v. Room: BE-525 Optical Networking Group TMS Data Phone: +31 (0)35 687 4721 Larenseweg 50, P.O. Box 1168, Fax: +31 (0)35 687 5976 1200 BD, Hilversum, The Netherlands mailto:jjboor at lucent.com ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Lauterbach ICD In-Circuit Debugger
A lot of people suggest to use the Abatron BDI2000 as debug system. I used the Lauterbach TRACE32-ICD system with ARM processors without MMU (no Linux) and it works extremely well. The manufacturer claims it fully supports both the MMU and the Linux kernel (see here for more details http://www.lauterbach.com/cgi-bin/docloc.pl?file=rtoslinux.pdf). Can anybody who used it confirm this point? I can. You can debug the kernel and e.g. interrupts using virtual addresses very well, you just have to specify the mapping (e.g. for ppc map phys 0x to 0xc000) I've not looked in detail yet to debug user processes. Jaap-Jan Many thanks in advance. llandre --- J.G.J. Boor Lucent Technologies Nederland b.v. Room: BE-525 Optical Networking Group TMS Data Phone: +31 (0)35 687 4721 Larenseweg 50, P.O. Box 1168, Fax: +31 (0)35 687 5976 1200 BD, Hilversum, The Netherlands mailto:jjboor at lucent.com ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
make menuconfig fails.
I am following the instructions on penguin PPC ( HYPERLINK http://penguinppc.org/embedded/cross-compiling/; http://penguinppc.org/embedded/cross-compiling/) and I am getting an error: during make menuconfig checklist.c:24 dalog.h: no such file or directory I do have the file in /usr/src/linux-2.2.14/scripts/lxdialog My kernel sources for PPC are under /usr/linuxppc_2_4 What am I missing? you may have problems with your ncurses installation Jaap-Jan ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Serious Problem: After Uncompresseing Linux..., what's next
Hi Folks, I think finally i have idea as to why boot process was failing. After uncompressing linux image, the code execution was aborting with an ESR value of 0x0800, which stands for ILLEGAL INSTRUCTION. When i checked the instruction causing this, i figured that, 'tlbia' (0x2384) is the culprit. tlbia is a valid instruction in PPC405 instruction set. I still don;t understand, how come it is getting rejected. Am i missing anything? Can anyone please throw some light on this? I don't know anything about your cpu (405) but make sure you understand any prerequisites for the tlbia instruction or what it's function is (may be your instruction cache is totally invalid after this instruction or your immu settings are not correct) Jaap-Jan thanks, Prakash --- Prakash kanthi pkanthi at yahoo.com wrote: Gary, I really appreciate your help. Here is what i am doing. Sorry it is little long. But was necessasry. 1. I have a boot loader(xrom.elf) of size around 400KB which basically have menu driven tests along with an option to jump to linux kernel(zImage.initrd.elf). 2. xrom.elf is compiled to start at 0xfffc and jump to 0x to have rest of functionality. zImage.initrd.elf is compiled to start at 0x0040. 3. I load zImage.initrd.elf first and then xrom.elf (xilinx tool makes sure that they are loaded to corresponding locations based on ELF header). 4. After loading both, i start running xrom.elf and it shows up a menu in my UART terminal. I jump to linux (0x0040). 5. I see that linux is basically reading the board info, setting UART, prints some boot messages onto it and then performs uncompression (gunzip function takes the rest of linux image and puts the uncompressed code starting from 0x0). 6. Up untill, everything is ok. After this, control jumps to 0x0 and starts executing. My problems are, a. Once the uncompression process is done, i am not sure if the image is copied to 0x0 (i do see value changes in memory starting from 0x0). b. As uncompression process is embedded into zImage.initrd.elf, i do not objdump does not tell me which function it is going to execute after uncompression. Please suggest. Thanks, Prakash --- Gary Thomas gary at chez-thomas.org wrote: On Fri, 2002-12-20 at 09:48, Prakash kanthi wrote: I do have xilinx tools and i am working with their V2P product. I completely understands what you are said. But the problem is, right after the uncompression and cpy to 0x, i loose total control because i don't have any clue what is getting executed. What sort of things can you do with the Xilinx tools? Is there any way to set [hardware] breakpoints or single step? And also, i have my boot monitor code at 0x, before uncompress process overwrites it. I see that some of that code is getting executed after jump to 0x0. I reason i am overwriting 0x0 is because, i only have 8MB RAM. 8M should be plenty of RAM. --- J.G.J. Boor Lucent Technologies Nederland b.v. Room: BE-525 Optical Networking Group TMS Data Phone: +31 (0)35 687 4721 Larenseweg 50, P.O. Box 1168, Fax: +31 (0)35 687 5976 1200 BD, Hilversum, The Netherlands mailto:jjboor at lucent.com ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
ppc_8xx-gcc 2.95.3 Monta Vista does not do ANY loop unrolling
Joakim, Enable loop unrolling by default for 8xx processors is not a good idea because of the limited instructions cache size. I think that's also what is recommended in the ppc faq: enable size optimization (-Os) for 8xx processors gives better performance. For a 750 or so, it would be good to enable loop unrolling. Jaap-Jan Hi I optimized the crc32() in JFFS2(fs/jffs2/crc.h) by manually unrolling the crc32 loop. This gave me a speed increase of 22% in mounting JFFS2 FS Later Alan Cox pointed out that my changes makes x86 run slower and it turns out that on x86 and a fairly new gcc will automatically unroll loops 'where appropriate' Removed my hand coded unrolling and added -funroll-loops to the JFFS2 Makefile, I got similar results as my hand coded unrolling (a little better). I therefore conclude that ppc_8xx-gcc 2.95.3 from Monta Vista does not do ANY unrolling unless you specify -funroll-loops. Doing this for the whole kernel is NOT a good idea, it will run slower due to big increase of size. Now I wonder: Is this a gcc 2.95.3, PPC or Monta Vista limitation? Which compiler will do unrolling 'where appropriate' for 8xx PPC and Where can I get a precompiled version? The short term solution is to specify -funroll-loops for individual files/directories. Obviously JFFS2 should be included, but what else? ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
ppc_8xx-gcc 2.95.3 Monta Vista does not do ANY loop unrolling
Jaap-Jan, Yes, it's not a good ide to enable -funroll-loops for the whole kernel, but some functions should be unrolled anyway, like the crc32() function since it won't increase the size very much but will yield a significant speed increase. So maybe the right way is to identify some loops and enable unrolling on them. yes (e.g. in fs/jffs2/Makefile) Where in the PPC FAQ did you read that -Os for 8xx processors? http://penguinppc.org/embedded/howto/x1273.html#AEN1346 Joakim Joakim, Enable loop unrolling by default for 8xx processors is not a good idea because of the limited instructions cache size. I think that's also what is recommended in the ppc faq: enable size optimization (-Os) for 8xx processors gives better performance. For a 750 or so, it would be good to enable loop unrolling. Jaap-Jan Hi I optimized the crc32() in JFFS2(fs/jffs2/crc.h) by manually unrolling the crc32 loop. This gave me a speed increase of 22% in mounting JFFS2 FS Later Alan Cox pointed out that my changes makes x86 run slower and it turns out that on x86 and a fairly new gcc will automatically unroll loops 'where appropriate' Removed my hand coded unrolling and added -funroll-loops to the JFFS2 Makefile, I got similar results as my hand coded unrolling (a little better). I therefore conclude that ppc_8xx-gcc 2.95.3 from Monta Vista does not do ANY unrolling unless you specify -funroll-loops. Doing this for the whole kernel is NOT a good idea, it will run slower due to big increase of size. Now I wonder: Is this a gcc 2.95.3, PPC or Monta Vista limitation? Which compiler will do unrolling 'where appropriate' for 8xx PPC and Where can I get a precompiled version? The short term solution is to specify -funroll-loops for individual files/directories. Obviously JFFS2 should be included, but what else? ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
ext2fs ramdisk created on Sun/SuSE does not work on PowerPC
IP: routing cache hash table of 1024 buckets, 8Kbytes TCP: Hash tables configured (established 8192 bind 8192) Linux IP multicast router 0.06 plus PIM-SM IP-Config: Incomplete network configuration information. ip_conntrack (1024 buckets, 8192 max) ip_tables: (c)2000 Netfilter core team NET4: Unix domain sockets 1.0/SMP for Linux NET4.0. VFS: Mounted root (ext2 filesystem). Freeing unused kernel memory: 56k i~t kernel stops Do you have any debugger attached (bdm?) Jaap-Jan -- willy ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
occasionally segmentation faults
Hi Wolgang, I upgraded to gcc2.95.3 and glibc-2.2.5, same problem. then I downloaded and installed you eldk, but still have sometimes the segmentation fault. My kernel is under suspicion now. I saw eldk also contains a 2.4.4 kernel (I use 2.4.10) Did you apply something else then the uart changes to it? thanks, Jaap-Jan I've some problems with my built cross environment from sparc-solaris to powerpc 8xx. I configured and built gcc2.95.2 and glibc-2.1.3 and used that to build the file and sh utils etc. These versions are pretty old. Why don't you use our ELDK, which is available for Solaris host environment, too? It's working fine... See http://www.denx.de/ELDK/ Wolfgang Denk ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
