#
# $FreeBSD$
#
# The Broadcom Sentry5 series of processors and boards is very commonly
# used in COTS hardware including the Netgear WGT634U.
#
# Some tweaks are needed for use with this platform:
#
# * CFE firmware's ELF loader expects an ELF kernel which is linked so as
#   not to contain offsets in PT_LOAD which point behind the actual offset
#   of that PT header. FreeBSD normally links the first PT_LOAD header to
#   begin at offset 0.
#
# * Broadcom's support package for the internal bus, the Sonics
#   SiliconBackplane, needs to be integrated to detect and probe hardware
#   correctly.
#
# * The clock needs to be calibrated correctly, so that DELAY() may work.
#   One problem with this is that the low-level printf() routine calls DELAY(),
#   which currently causes divide-by-zero trap
#
# * The Broadcom CPUs have no FPU. Attempting to detect one by reading CP1's
#   status register causes an unhandled boot-time exception. An FPU emulator
#   will be necessary to support multi-user boot.
#

ident		SENTRY5
cpu		CPU_MIPS4KC
options 	CPU_NOFPU
options 	ISA_MIPS32
options 	CPU_SENTRY5			# XXX should this be a
						# sub-cpu option?

# XXX only siba should be hardwired for now; we will use
# bus enumeration there
files		"../sentry5/files.sentry5"
hints		"SENTRY5.hints"

# sentry5 normally ships with cfe firmware; use the console for now
options 	CFE
options 	CFE_CONSOLE
options 	ALT_BREAK_TO_DEBUGGER

# cfe loader expects kernel at 0x80001000 for mips32 w/o backwards
# offsets in the linked elf image (see ldscript hack)
# XXX can we conditionalize the linker stuff on options CFE?
options 	KERNVIRTADDR=0x80001000

makeoptions	LDSCRIPT_NAME=	ldscript.mips.cfe

#makeoptions	ARCH_FLAGS=-march=mips32
makeoptions	MIPS_LITTLE_ENDIAN=defined
makeoptions	DEBUG=-g		#Build kernel with gdb(1) debug symbols
makeoptions	MODULES_OVERRIDE=""

options 	DDB
options 	KDB

options 	SCHED_4BSD		#4BSD scheduler
options 	INET			#InterNETworking
options 	NFSCLIENT		#Network Filesystem Client
options 	NFS_ROOT		#NFS usable as /, requires NFSCLIENT
options 	PSEUDOFS		#Pseudo-filesystem framework
options 	_KPOSIX_PRIORITY_SCHEDULING #Posix P1003_1B real-time extensions

# Debugging for use in -current
options 	INVARIANTS
options 	INVARIANT_SUPPORT

#options 	BUS_DEBUG
#makeoptions	BUS_DEBUG

device		siba			# Sonics SiliconBackplane
device		pci			# siba_pcib

device		bfe			# XXX will build both pci and siba
device		miibus			# attachments

# pci devices
# notyet:
#device		ath			# in pci slot
#device		ath_hal			# pci chip support
#options 	AH_SUPPORT_AR5416	# enable AR5416 tx/rx descriptors

device		usb			# USB Bus (required)
device		uhci			# UHCI PCI->USB interface
device		ehci			# EHCI PCI->USB interface (USB 2.0)

# need to teach the code to ignore the bridge....


# XXX notyet; need to be auto probed children of siba_cc.
#device		uart

device		loop
device		ether
device		md