diff --git a/sys/mips/conf/PB92 b/sys/mips/conf/PB92
index aa7f39354a1f..112aca7fadc5 100644
--- a/sys/mips/conf/PB92
+++ b/sys/mips/conf/PB92
@@ -13,6 +13,17 @@ options		HZ=1000
 # The PB92 has 32mb of RAM; hard-code that
 options		AR71XX_REALMEM=32*1024*1024
 
+# It's UBOOT, not Redboot - without this, things will hang at startup
+options		AR71XX_ENV_UBOOT
+
+# We have to build most things as modules rather than in the kernel.
+# The PB92 has 4MB of SPI flash and the default kernel "partition"
+# is only 892KiB.  In order to try and squeeze into that (so people
+# who already are using it without modifying the default flash layout)
+# we need to cut down on a lot of things.
+
+makeoptions	MODULES_OVERRIDE="ath ath_pci ath_ahb bridgestp if_bridge if_gif if_gre random wlan wlan_acl wlan_amrr wlan_ccmp wlan_rssadapt wlan_tkip wlan_wep wlan_xauth usb ar71xx"
+
 hints		"PB92.hints"
 include		"../atheros/std.ar71xx"
 
@@ -24,7 +35,8 @@ options		KDB
 
 options		SCHED_4BSD		#4BSD scheduler
 options		INET			#InterNETworking
-options		INET6
+# Can't do IPv6 - it just doesn't fit.
+# options		INET6
 # options		NFSCL			#Network Filesystem Client
 options		PSEUDOFS		#Pseudo-filesystem framework
 options		_KPOSIX_PRIORITY_SCHEDULING #Posix P1003_1B real-time extensions
@@ -41,11 +53,10 @@ options         FFS                     #Berkeley Fast Filesystem
 #options         UFS_ACL                 #Support for access control lists
 #options         UFS_DIRHASH             #Improve performance on big directories
 
-options		MD_ROOT
-options		MD_ROOT_SIZE=5120
-device		geom_uzip
-options		GEOM_UZIP
-options		ROOTDEVNAME=\"ufs:/dev/md0.uzip\"
+# Support uncompress lzma rootfs
+device		geom_uncompress
+options		GEOM_UNCOMPRESS
+options		ROOTDEVNAME=\"ufs:/dev/map/rootfs.uncompress\"
 
 # PCI bus
 device		pci
@@ -58,49 +69,50 @@ device		nvram2env
 options		IEEE80211_DEBUG
 options		IEEE80211_SUPPORT_MESH
 options		IEEE80211_SUPPORT_TDMA
-device		wlan            # 802.11 support
-device		wlan_wep        # 802.11 WEP support
-device		wlan_ccmp       # 802.11 CCMP support
-device		wlan_tkip       # 802.11 TKIP support
-device		wlan_xauth	# 802.11 hostap support
+options		IEEE80211_ALQ
+#device		wlan            # 802.11 support
+#device		wlan_wep        # 802.11 WEP support
+#device		wlan_ccmp       # 802.11 CCMP support
+#device		wlan_tkip       # 802.11 TKIP support
+#device		wlan_xauth	# 802.11 hostap support
 
-device		ath		# Atheros pci/cardbus NIC's
-device		ath_pci		# PCI/PCIe bus glue
+#device		ath		# Atheros pci/cardbus NIC's
+#device		ath_pci		# PCI/PCIe bus glue
 options 	ATH_DEBUG
 options		ATH_ENABLE_11N
 options		ATH_DIAGAPI
 
-device		ath_hal
+# device		ath_hal
 options		AH_SUPPORT_AR5416
 options		AH_DEBUG
 options		AH_DEBUG_ALQ
 
-device		ath_rate_sample
+# device		ath_rate_sample
 
 device		mii
 device		arge
 
 # USB devices - PB92 has EHCI only
 
-device		usb
+#device		usb
 options		USB_EHCI_BIG_ENDIAN_DESC        # handle big-endian byte order
 options		USB_DEBUG
 options		USB_HOST_ALIGN=32
-device		ehci
+#device		ehci
 
 # Mass storage
-device		scbus
-device		umass
-device		da
+#device		scbus
+#device		umass
+#device		da
 
 # Read MSDOS formatted disks
 options		GEOM_PART_BSD
 options		GEOM_PART_MBR
-options		MSDOSFS
+# options		MSDOSFS
 
 # GPIO Bus
-device		gpio
-device		gpioled
+#device		gpio
+#device		gpioled
 
 # SPI and flash
 device		spibus
@@ -118,7 +130,7 @@ device		uart
 # Network twiddling
 device		loop
 device		ether
-device		md
-device		bpf
-device		random
-device		if_bridge
+#device		md
+#device		bpf
+#device		random
+#device		if_bridge