`pci-bios`, `pci-bios-v2`

Provide support for the PCI BIOS

You must be root to start this server.

Syntax:

For pci-bios:

pci-bios [-b buses] [-B] [-c] [-m] [-v] [-x] [-dbios bios_options]

You must run pci-bios-v2 as pci-bios:

pci-bios [-b buses] [-B] [-c] [-D] [-M] [-m] [-P addr:size]
         [-v] [-x] [-dbios bios_options]

Runs on:

Neutrino

Targets:

x86

Options:

-b buses

The number of PCI buses to scan. The default is 10.

-B

Force enumeration of bridges of type “OTHER”.

-c

Ignore class code check.

-D

(pci-bios-v2 only) Enable Message Signaled Interrupts (MSI) and Extended MSI (MSI-X) for video.

-dbios bios_options

BIOS options, which include:

irqlist=irq1,irq2,…

Pass a list of IRQs to the BIOS. For example:

irqlist=5,7,9

-M

(pci-bios-v2 only) Disable MSI and MSI-X (they're enabled by default).

-m

Don't map IRQs; some BIOSs don't support IRQ mapping.

-P addr:size

(pci-bios-v2 only) Specify the address and size of the extended PCIe configuration space.

-v

Verbose output; display detailed information on the console.

-x

Don't remove devices from the PCI bus while enumerating them.

Description:

The pci-bios server provides PCI BIOS support. You'll have to provide it in your boot image for systems with a PCI BIOS. Invoke seedres before starting pci-bios.

This server creates the /dev/pci device. Wait for it to appear by specifying the following in the buildfile used by mkifs:

pci-bios
waitfor /dev/pci

The pci-bios-v2 server is similar to pci-bios, but supports Message Signaled Interrupts (MSI). You must use pci-bios-v2 if you're using startup-apic.

If you're using pci-bios-v2, you must name it pci-bios in order for the enumerators to work correctly. In your buildfile, add pci-bios-v2 like this:

pci-bios=pci-bios-v2

pci-bios, pci-bios-v2