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For more interesting projects done by Flameman&Legacy, be sure to check out his project index



8 PinMini DIN (SGI) DB25 Plug Name
4 7 GND
5 2 TD
3 3 RD
1 8 CD
7 4 DTR

add on board support

board over gio32 kernel support
scsi add on dunno
phobos g130 dunno

note: if you inclide the gfx framebuffer support in the kernel, then you CAN NOT boot with missing gfx hw board! The kernel is expecting to find it, if it is missing it will panic!

Suggestion: do not include the framebuffer, use uart console only


kernel status

kernel note
2.6.37-rc8 working, under testing, note1 needs to be applied

  • note1
- Tickless System (Dynamic Ticks) 
- High Resolution Timer Support 
- SCSI generic support 
- RAID Transport Class 
- Verbose SCSI error reporting (kernel size +=12K) 
- SCSI logging facility 

- No Forced Preemption 
- SCSI_WAIT_SCAN compiled as builtin (it was an hidden module) 

add on board support

board over pci kernel support
_ dunno

about sgi o2

Known working PCI cards with IRIX

  • SGI PCI Serial I/O a.k.a. PCI SIO UFC, part number 030-1657-003, Provides two RS-232/RS-422 serial ports. The board is slotted for universal voltage, but SGI only provides drivers for Onyx 300/350/3000 systems. The SGI marketing code is PCI-SER-10002.
  • SGI PCI Digital Audio Board <also known as the RADical Audio board>. The SGI part number for the example shown is 030-1649-001, it appears in an hinv with PCI vendor ID 0x10a9(SGI) and a device ID of 0x0005(RAD Audio):
  • SGI PCI Gigabit Ethernet:, 1000 Base SX (fiber optic interface) and 1000 Base T (copper interface) - shown mounted in an O2k XIO Shoehorn <a PCI-to-XIO slot adapter>: Both are keyed as 'universal' PCI cards to fit in either 3.3 or 5 volt slots.
  • SGI O2 10/100BaseT Network Card for O2: SGI marketing code SGI_PCI-ENET-TX-1P; part number 9210105
  • SGI USB PCI card, SGI part number 9210286: NEC chipset - Slotted for 3.3 and 5V PCI applications. SGI equipped Onyx 350 InfiniteReality and InfinitePerformance systems with this card as an attachment point for USB keyboards and mice. There are some references on TechPubs indicating Orange Micro as the OEM, while "UP205-0525" screened on the PCB returns Adaptec references. It appears in an hinv with a PCI vendor ID of 0x1033 (NEC) PCI device numbers 0x0035(Dual OHCI controllers plus Single EHCI controller) and 0x00e0(USB 2.0 Host Controller).
  • DATAFIRE PCI 1ST ISDN card SGI PN: 9210111 Came inside one O2, SGI part number 9981028 SGI

See more here [1]


add on board support

board over gio64 / eisa kernel support
_ dunno


linux is not running yet, but OpenBSD is going to run


Things to keep in mind when building kernel for an SGI Octane

  • Impact (MGRAS) console and X driver work, please report any bugs.
  • VPro (Odyssey) console works, but no X driver exists yet.
  • PCI Card Cages should work for many devices, except certain types like
  • PCI-to-PCI bridges (USB hubs, USB flash card readers for example).
  • Do not use OHCI-based USB cards in Octane. They're broke on this machine.
  • Patches are welcome to fix the issue.
  • Equally, UHCI Cards are showing issues in this release, but should still function somewhat. This issue manifests itself when using pl2303 USB->Serial adapters.
  • Other XIO-based devices like MENET and various Impact addons remain
  • untested and are not guaranteed to work. This applies to various digital video conversion boards as well.


XBow deatils

kernel status

it has been tested on this machine

>> hinv
                   System: IP30
                Processor: 400 Mhz R12000, 2M secondary cache
                Processor: 400 Mhz R12000, 2M secondary cache, (cpu 1)
              Memory size: 1536 Mbytes
                  Network: ef0 ethernet (100/10 base-T)
                    Audio: RAD Audio Processor
                  PCI Bus: XTALKPCI (13)
               PCI Device: slot 1 vendor 0x1033 part 0x35 rev 67
                 Graphics: ESI
                 Graphics: ODYSSEY

Adding/removing ESI, ODYSSEY

kernel note
2.6.17 pretty stable, used in production, 2xR12K and 2Gbyte of ram, ram should be reduced to 1.5Gb in order to use PCI, also IOC-serial-kb must be removed from the kernel, about the ram problem i think the actual bug is in the pdev_to_baddr() function in arch/mips/include/asm/mach-ip30/dma-coherence.h, 32-bit PCI are affected. Funny enough, the BaseIO devices, like the IOC3 or SCSI, are not affected by this, while PCI-USB is affected.
2.6.19 not stable as 2.6.17, issue when executed on system with 2Gbyte of ram, PCI-cadge not working, issues with SMP
2.6.20.* may be working, not tested
2.6.25 busted, stay away
2.6.26 may be there is a patch, but IOC3 is hardly issued, SMP dead
2.6.29 bugs in the scheduler, not booting on 2xR12K
3.x.x @https://github.com/jaaron/linux-mips-ip30 system boots but IOC3 was still dead, as was SMP kernel supportYes
Memory controller supportYessupport for 1.5GB
Interrupt supportYesworking
SMP supportYes2xR12K
PCI expansionYesworking with USD NEC EHCI
ram rootfsYesuclibc & glibc working
rootfsYes2006 mips3, mips4 are working kernel supportYes
Memory controller supportYessupport for 1.5GB
Interrupt supportYesnot pretty working, also scheduling while atomic issue
SMP supportYes2xR12K does not boot, 1xR12K boots
PCI expansionYesnot tested
ram rootfsYesuclibc & glibc working
rootfsYes2006 mips3, mips4 are working

last kernel 2.6.29

Option? 5 Command Monitor. Type "exit" to return to the menu. >> bootp(): Setting $netaddr to (from server ) Obtaining from server 13597184+304112 entry: 0xa800000020009cd0 - dead -

It does not work on 2xR12K@400Mhz, it boots on 1xR12K system


last working kernel 2.6.17-r14

kernel 2.6.17-r14, we are stopped at the year 2006, running a 2008 stage3 rootfs


CPU and memory64-bit kernel supportYes
Memory controller supportYessupport for >1GB added in 2.6.12-R22
Interrupt supportYes
SMP supportYes
XIO supportBasic mapping WPwork in progress - XIO API
Device discovery WPit basically works, but waits for XIO API
Flow control WPsoon to come in the new XIO API
PCI supportBasic mappingYes
Device discoveryYes
64-bit DMAYes
32-bit DMAYes
System bridgeYes
Additional bridgesYes
IOC3 supportEthernetYesalso for IP27
SuperIO meta-deviceYesalso for IP27
Serial portsYesalso for IP27
RS232/RS422 mode switchNo =(low priority task, but no real problems
Parallel portNo =(unavailability of non-standard cable for testing
Real Time ClockYes
Software power downYes
Voltage monitorNo =(low priority task, not enough information
PS/2 portsYes
SCSI supportInternal devicesYes
External devicesYes
RAD1 supportData DMA supportYes
Status DMA supportYes
Analog outputYes
Analog inputYes
AES outputYes
AES inputYes
ADAT outputNo =(no test equipment
ADAT inputNo =(no test equipment
ALSA PCM supportYesplease report bugs!
ALSA mixer supportYes
ImpactSR supportLinux console supportYes
MPlayer output supportYes
X Window supportYesshadowfb driver
24-bit depth setupYes
Video mode changeNo =(not enough information
Image DMAYes
Hardware cursorYes
2D accelerationYes
3D accelerationNo =(not enough information
Flow controlNo =(not enough information, lack of XIO flow control
Multiple cardsNo =(lack of test hardware
VPro supportLinux console supportYes
X Window supportNo =(complexity of accelerated X drivers
24-bit depth setupYes
2D accelerationYes
3D accelerationYes
Image DMANo =(it's not really easy

Other XIO-based devices like MENET and various Impact addons remain untested and are not guaranteed to work. This applies to various digital video conversion boards as well.

PCI Card Cages

  • broken OHCI-based USB cards
  • partially broken UHCI-based USB cards.


add on board support

board over xio24 / pci cartridge kernel support
v6 over xio24 2.6.17: no X11 support, pretty text console
impactSR over xio24 2.6.17: pretty X11 support, pretty text console

What is the state of hardware support on this machine?

  • V6, V8 gfx: X11 support doesn't exist, and likely won't for a very long while. Stan (the IP30 Port Author) recently got console mode running on this card, but from what I understand, this is a rather complex piece of video hardware. Remote X works, however.
  • Impact gfx: X11 is working
  • Onboard sound works well enough from what I hear. I tested several MP3s from console via mpg123, and they worked well. A new patch coming out next week (Jul 23-24) will enable support for the optical inputs/outputs for AES (ADAT capabilities will not be supported).
  • Onboard Scsi works like a charm. It wasn't entirely usable about 3 weeks ago due to reliance on the old qlogicisp driver, but with some very recent fixes to qla1280, it has replaced qlogicisp. I now run a RAID5 array using 3 50G seagate drives on my Octane, and so far, everything works great (and hdparm reports ~17.4MB/s throughput).
  • Onboard Ethernet works fine too. The IOC3 driver was recently re-written to make IOC3 more of a Bus device with peripherals hanging off of it, which makes IOC3 less of a nightmare device from a coder's standpoint (but not by much).

boot examples

dual boot, idea

It should be possible if you set up IRIX as per normal and leave space on the drive for Linux. Install Linux as per the guide except when you get to set up the PROM. you'll want to leave that as is. Then you'd set up arcload to boot up Linux on demand.

  • To boot IRIX, just switch the machine on.
  • To boot Linux, drop to the monitor prompt and run boot -f arcload.

interesting url