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Import of OpenBSD 4.2 release kernel tree with initial code to support 
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO

Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)

#	$OpenBSD: RAMDISK,v 1.15 2007/05/20 14:10:46 miod Exp $
#

machine		sgi mips64

maxusers	4
option		TIMEZONE=0	# minutes west of GMT (for)
option		DST=0		# use daylight savings rules

# Make options
makeoption	LINK_ADDRESS="0xffffffff80100000"

option		ARCBIOS		# Systems uses ARC firmware.

option		PCIVERBOSE
option		USBVERBOSE

option		DDB

# Filesystem options
option		CD9660		# ISO 9660 + Rock Ridge file system
option		FIFO		# POSIX fifo support (in all filesystems)
option		FFS		# fast filesystem
#option		MSDOSFS		# Ability to read write MS-Dos filesystem
option		NFSCLIENT	# Sun NFS-compatible filesystem (client)

# Networking options
option		INET		# IP + ICMP + TCP + UDP
option		INET6		# IPv6 (needs INET)

# RAMDISK stuff
option		MINIROOTSIZE=8192
option		RAMDISK_HOOKS

# Define what targets to support
option		TGT_O2

# Specify storage configuration using ramdisk
config		bsd	root on rd0a swap on rd0b

#
# Definition of system
#
mainbus0	at root
cpu*		at mainbus0

#### Main local buses

macebus0	at mainbus0	# MACE controller localbus.

#### Localbus devices

clock0		at macebus0
mec0		at macebus0 sys 0x18 base 0x00280000 irq 4
com0		at macebus0 sys 0x18 base 0x00390000 irq 5
com1		at macebus0 sys 0x18 base 0x00398000 irq 5

#### PCI Bus
macepcibr0	at macebus0	# MACE controller PCI Bus bridge.
pci*		at macepcibr?	# PCI is on pci bridge

#### SCSI controllers
ahc*		at pci?
siop*		at pci?

#### NICs
dc*		at pci?		# 21143, "tulip" clone ethernet
ep*		at pci?		# 3Com 3c59x
fxp*		at pci?		# EtherExpress 10/100B ethernet
mtd*		at pci?		# Myson MTD803 3-in-1 Ethernet
ne*		at pci?		# NE2000-compatible Ethernet
ti*		at pci?		# Alteon ACEnic gigabit Ethernet
vr*		at pci?		# VIA Rhine Fast Ethernet
xl*		at pci?		# 3C9xx ethernet

##### Media Independent Interface (mii) drivers
exphy*		at mii?		# 3Com internal PHYs
inphy*		at mii?		# Intel 82555 PHYs
iophy*		at mii?		# Intel 82553 PHYs
icsphy*		at mii?		# ICS 1890 PHYs
lxtphy*		at mii?		# Level1 LXT970 PHYs
nsphy*		at mii?		# NS and compatible PHYs
nsphyter*	at mii?		# NS and compatible PHYs
qsphy*		at mii?		# Quality Semi QS6612 PHYs
sqphy*		at mii?		# Seeq 8x220 PHYs
rlphy*		at mii?		# RealTek 8139 internal PHYs
mtdphy*		at mii?		# Myson MTD972 PHYs
dcphy*		at mii?		# Digital Clone PHYs
acphy*		at mii?		# Altima AC101 PHYs
amphy*		at mii?		# AMD 79C873 PHYs
tqphy*		at mii?		# TDK 78Q212x PHYs
bmtphy*		at mii?		# Broadcom 10/100 PHYs
brgphy*		at mii?		# Broadcom Gigabit PHYs
eephy*		at mii?		# Marvell 88E1000 series PHY
xmphy*		at mii?		# XaQti XMAC-II PHYs
nsgphy*		at mii?		# NS gigabit PHYs
urlphy*		at mii?		# Realtek RTL8150L internal PHY
rgephy*		at mii?		# Realtek 8169S/8110S PHY
ukphy*		at mii?		# "unknown" PHYs


#### SCSI Bus devices
scsibus*	at ahc?
scsibus*	at siop?

sd*		at scsibus?
st*		at scsibus?
cd*		at scsibus?
#ch*		at scsibus?
#ss*		at scsibus?
#uk*		at scsibus?

#### PSEUDO Devices
pseudo-device	loop		1	# network loopback
pseudo-device	bpfilter	1	# packet filter ports

pseudo-device	rd		1	# Ram disk.