IP32

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General

The is Silicon Graphics's successor of the Indy workstation. It comes in several versions with R5000, RM5271, RM7000, R10000 or R12000 processors. The firmware is a 32-bit ARCS.

The O2 Workstation is based around the CRIME, MACE, VICE, and GBE ASICs. CRIME ASIC is the main system ASIC which interfaces the MIPS cpu, memory system and the I/O system in the MACE ASIC. CRIME ASIC also contains the 3D gfx rendering engine which renders to main system memory -- part of which is used as the frame buffer which is DMA'ed to a video connector using the GBE ASIC. A MACE chip is used to provide legacy device support (serial, parallel, video, RTC...). VICE ASIC is used to process video streams and images stored in memory.

Support

Currently only R5000 based IP32 (O2) systems are well supported in Linux. Support for R1x000 based O2 systems need more work, see below.

Currently supported devices include:

  • PS/2 keyboard and mouse
  • Framebuffer, see GBE for more information
  • Serial ports
  • Parallel port
  • Audio in/out, since Alsa 1.0.17
  • SCSI (Adaptec 7880) and booting from a hard drive works using arcboot or ARCLoad.
  • Integrated 10/100 Base-T ethernet
  • PCI slot (Some USB cards are known to work ok)

Experimental support

VICE

Some experimental work has been done on the VICE engine.

  • Experimental (and old) patches for VICE and [2].

R1x000

The combination of R1x000 speculative execution feature and lack of hardware cache coherency in IP32, causes problems that need special workarounds in kernel (and also possibly GCC). The kernel portion has not been achieved yet.

The work done for IP28 support might also help the R10K O2. Patches for kernel and gcc can be found at .

Patches

Kernel

  • is working good

PCI boards known to be working when plugged in O2's PCI slot

  • ...

a PCI-usb should be useful in order to plug an external usb-disk

NewPP limit report Cached time: Cache expiry: 86400 Dynamic content: false CPU time usage: 0.009 seconds Real time usage: 0.011 seconds Preprocessor visited node count: 30/1000000 Preprocessor generated node count: 36/1000000 Post‐expand include size: 0/2097152 bytes Template argument size: 0/2097152 bytes Highest expansion depth: 2/40 Expensive parser function count: 0/100 Transclusion expansion time report (%,ms,calls,template) 100.00% -total Saved in parser cache with key wikidb:pcache:idhash:765-0!*!0!!en!*!* and timestamp and revision id 12421
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