July 2003 - ixp1200 - lists.cs.princeton.edu

unable to boot linux on Radisys ENP-2505 (IXP1200 Rev C0)
by Koert Vlaeminck 11 Jul '03

11 Jul '03

Hi, I've been trying to boot a linux kernel on a Radisys ENP-2505 board for some time now. I double-checked just about every software component required, but nothing seemed to resolve my problem. The board reports 'Booting Linux...' and then simply hangs or reboots. Finally I started comparing the content of /dev/bv (using hexdump/hexedit) and the actual content of the IXP memory (using dump/mem in cygmon). If I write a block of 64 bit to /dev/bv on address 0x04008000, only the first 4 bytes (4008000 tot 4008003) are updated, while the last 4 bytes (4008004 to 4008007) become 0. This probably has something to do with the fact that we use the 64bit Radisys ENP-2505 board (IXP1200 Rev C0) on a 32bit PCI system, although we disabled the 64bit PCI extension using the dip switches on the board. However, when we write directly to the IXP memory, all values are updated correctly in /dev/bv. So in summary: * writing from host PC to IXP memory: lower 32 bits of each 64bit block are updated correctly, while the higher 32 bits become 0. * writing to the IXP memory on the cygmon console and then reading its contents through /dev/bv: everything is correct. * 64bit Radisys board is on a 32bit PCI system with the 64bit PCI extension dip switch disabled! (I also tried enabling it, hoping the label was wrong, but that didn't change anything) Do you know of any driver issues regarding this problem? Any suggestions on how to solve it? I tried two seperate ENP-2505 boards and both have the same problem, so I think it's not a hardware problem. And 32bit PCI busses are supported according to the hardware reference. TIA

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How to debug microACE code on hardware?
by Yong Liu 11 Jul '03

11 Jul '03

Hi, I want to add some code into the l3forwarder microace example. Anyone can tell me how can I debug the code on ixp1200 board using the Workbench? I can debug a simple microengine C program on the hardware now. But the microACE code has corelation with the StrongARM code. Thanks! Yong Liu

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IXF1002 : Multipacket mode for IXP12EB
by Yannis Haritakis 09 Jul '03

09 Jul '03

Hi all, Is there anyone that has an IXP 1200 EB development platform (IXP12EB) with the IXF1002 configured with Multipacket mode ON ? Thank you for your time, Yannis Haritakis

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incorrect register live ranges
by Cyrus Hall 08 Jul '03

08 Jul '03

I'm an experiencing what feels like register mis-allocation by uca. I allocate several registers, branch to another segment, allocate several more, and the newly allocated virtual registers end up being allocated in the same physical registers as the virts allocated in before the branch. I'm using an unconditional branch (br) to jump to the second segment (.segment 1) - same to come back to segment 0. IE: .segment 0 .local reg1 immed[reg1, 1] br[label#] done#: ctx_arb[kill] .endlocal .segment 1 label#: .local reg2 immed[reg2, 2] //ends up overwriting reg1 br[done#] .endlocal Does the compiler not calculate virtual live ranges across segments? Or is this a silly .local\.endlocal problem, and the compiler doesn't follow the live range on a branch outside a .local section? thanks, Cy

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I want to get previous IXP1200 mailing-list data
by Cho, joon-woo 08 Jul '03

08 Jul '03

Hello. I want to see previous IXP1200 mailing-list data. Is it opened? If yes, how can I access that information? Thanks.

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Question on SA core memory map
by Wong Kim Sing 08 Jul '03

08 Jul '03

Hi, Recently, I trying to use some location in the sdram to do some buffering, and I come across this problem. In the Microcode Programmer's Reference Manual, under the StrongARM Core Memory Map, the location of the cache flush area is locate at "0xA0000000 - 0xA0004000", and is it supposed to be correct right??? But how come under the file "C:/IXP1200/include/hal_sdram.h", the location is different (0xE0000000 - 0xE0FFFFFF)??? Is anyone know the reason why the location is different? Is the file suppose to be compiled together by SA? Best regard, Mike Mike Wong Kim Sing R&D Engineer Institute for Communications Research 20 Science Park Road TeleTech Park #02-34/37 Singapore Science Park II Singapore 117674 Tel: 65 68729030 DID : 65 68709320 Fax: 65 67795441 Email: wongks(a)icr.a-star.edu.sg Website: http://www.icr.a-star.edu.sg

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[Q] Long question
by Cho, joon-woo 07 Jul '03

07 Jul '03

Hello. I want to install IXP1200EB on Linux-host & I know there are many linux device driver versions. Additionally, is it possible running Linux on StrongARM? In other words, IXP board is operated as computer device & parallel StrongARM core which is resided in IXP can run linux for itself. Is it possible? And if possible, may I get open source like that function? Please give me answers. Thanks.

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[Q] How do I request a command to another PCI device?
by Cho, joon-woo 03 Jul '03

03 Jul '03

Hello. I installed IXP1200EB on the Linux machine with vera driver. And I want to send a command from IXP1200EB to another device. (Especially, SCSI controller or IDE HDD for DMA data transfer from there to IXP1200 SDRAM unti) Is it possible? And if possible, please let me know how I can. Thanks.

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round trip times in workbench
by liam noonan 02 Jul '03

02 Jul '03

Hi, Does anyone know how to configure workbench so that you can write to a file the round trip time for an individual packet (in simulation mode). The logging option does not meet my requirement. I am interested in how long it takes a packet to be received processed and transmitted i..e. an entrance time and exit time. Thanks Liam Noonan University of Limerick Ireland

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[Q] Is there a method to move packet from StrongArm to MAC ports directly?
by Cho, joon-woo 02 Jul '03

02 Jul '03

Hello. I want to know there is direct path from StrongARM to MAC ports. In other words, Can programmer send packets which are managed by StrongARM to the MAC ports not through MicroEngine? Please answer. thanks

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