Add support for the Raspberry Pi 2. As the chip is based on the bcm2835 in

the Raspberry Pi B we support most of the devices are already supported,
however the base address has changed.

A few items are not working, or missing. The main ones are:
 * DMA doesn't work in the sdhci driver.
 * Enabling vchiq halts the boot, may be interrupt related.
 * There is no U-Boot port yet so the DTB is embedded in the kernel.

The last point will make it difficult to boot FreeBSD, however there is
support for the Raspberry Pi 2 in the U-Boot git repo. As I have not tested
this it is left as an open task to create a port to build.

X-MFC:		When the above issues are fixed
Sponsored by:	ABT Systems Ltd

1 files changed, 142 insertions, 0 deletions

diff --git a/sys/arm/conf/RPI2 b/sys/arm/conf/RPI2
new file mode 100644
index 0000000..02f3869
--- /dev/null
+++ b/sys/arm/conf/RPI2
@@ -0,0 +1,142 @@
+#
+# RPI-B -- Custom configuration for the Raspberry Pi
+#
+# For more information on this file, please read the config(5) manual page,
+# and/or the handbook section on Kernel Configuration Files:
+#
+#    http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html
+#
+# The handbook is also available locally in /usr/share/doc/handbook
+# if you've installed the doc distribution, otherwise always see the
+# FreeBSD World Wide Web server (http://www.FreeBSD.org/) for the
+# latest information.
+#
+# An exhaustive list of options and more detailed explanations of the
+# device lines is also present in the ../../conf/NOTES and NOTES files.
+# If you are in doubt as to the purpose or necessity of a line, check first
+# in NOTES.
+#
+# $FreeBSD$
+
+ident		RPI-B
+
+include		"../broadcom/bcm2835/std.rpi"
+include		"../broadcom/bcm2835/std.bcm2836"
+
+options 	HZ=100
+options 	SCHED_4BSD		# 4BSD scheduler
+options 	PREEMPTION		# Enable kernel thread preemption
+options 	INET			# InterNETworking
+options 	INET6			# IPv6 communications protocols
+options 	SCTP			# Stream Control Transmission Protocol
+options 	FFS			# Berkeley Fast Filesystem
+options 	SOFTUPDATES		# Enable FFS soft updates support
+options 	UFS_ACL			# Support for access control lists
+options 	UFS_DIRHASH		# Improve performance on big directories
+options 	UFS_GJOURNAL		# Enable gjournal-based UFS journaling
+options 	QUOTA			# Enable disk quotas for UFS
+options 	NFSCL			# Network Filesystem Client
+options 	NFSLOCKD		# Network Lock Manager
+options 	NFS_ROOT		# NFS usable as /, requires NFSCL
+options 	MSDOSFS			# MSDOS Filesystem
+options 	CD9660			# ISO 9660 Filesystem
+options 	PROCFS			# Process filesystem (requires PSEUDOFS)
+options 	PSEUDOFS		# Pseudo-filesystem framework
+options 	TMPFS			# Efficient memory filesystem
+options 	GEOM_PART_GPT		# GUID Partition Tables
+options 	GEOM_PART_BSD		# BSD partition scheme
+options 	GEOM_PART_MBR		# MBR partition scheme
+options 	COMPAT_43		# Compatible with BSD 4.3 [KEEP THIS!]
+options 	SCSI_DELAY=5000		# Delay (in ms) before probing SCSI
+options 	KTRACE			# ktrace(1) support
+options 	SYSVSHM			# SYSV-style shared memory
+options 	SYSVMSG			# SYSV-style message queues
+options 	SYSVSEM			# SYSV-style semaphores
+options 	_KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions
+options 	KBD_INSTALL_CDEV	# install a CDEV entry in /dev
+options 	PLATFORM
+options 	FREEBSD_BOOT_LOADER	# Process metadata passed from loader(8)
+options 	VFP			# Enable floating point hardware support
+
+# Debugging for use in -current
+makeoptions	DEBUG=-g		# Build kernel with gdb(1) debug symbols
+options 	BREAK_TO_DEBUGGER
+options 	ALT_BREAK_TO_DEBUGGER
+#options 	VERBOSE_SYSINIT		# Enable verbose sysinit messages
+options 	KDB			# Enable kernel debugger support
+# For minimum debugger support (stable branch) use:
+#options 	KDB_TRACE		# Print a stack trace for a panic
+# For full debugger support use this instead:
+options 	DDB			# Enable the kernel debugger
+options 	INVARIANTS		# Enable calls of extra sanity checking
+options 	INVARIANT_SUPPORT	# Extra sanity checks of internal structures, required by INVARIANTS
+#options 	WITNESS			# Enable checks to detect deadlocks and cycles
+#options 	WITNESS_SKIPSPIN	# Don't run witness on spinlocks for speed
+#options 	DIAGNOSTIC
+
+# NFS root from boopt/dhcp
+#options 	BOOTP
+#options 	BOOTP_NFSROOT
+#options 	BOOTP_COMPAT
+#options 	BOOTP_NFSV3
+#options 	BOOTP_WIRED_TO=ue0
+
+options 	ROOTDEVNAME=\"ufs:mmcsd0s2\"
+
+device		bpf
+device		loop
+device		ether
+device		uart
+device		pty
+device		snp
+device		pl011
+
+# Comment following lines for boot console on serial port
+device		vt
+device		kbdmux
+device		ukbd
+
+device		sdhci
+device		mmc
+device		mmcsd
+
+device		gpio
+device		gpioled
+
+# I2C
+device		iic
+device		iicbus
+device		bcm2835_bsc
+
+device		md
+device		random			# Entropy device
+
+# USB support
+device		usb
+options 	USB_DEBUG
+device		dwcotg			# DWC OTG controller
+
+# USB storage support
+device		scbus
+device		da
+device		umass
+
+# USB ethernet support
+device		smcphy
+device		mii
+device		smsc
+
+# SPI
+device		spibus
+device		bcm2835_spi
+
+#device		vchiq
+#device		sound
+
+# Flattened Device Tree
+options 	FDT			# Configure using FDT/DTB data
+# Note:  DTB is normally loaded and modified by RPi boot loader, then
+# handed to kernel via U-Boot and ubldr.
+options 	FDT_DTB_STATIC
+makeoptions	FDT_DTS_FILE=rpi2.dts
+makeoptions	MODULES_EXTRA=dtb/rpi