MFC 263910, 263913, 263914, 263933, 263934, 263935, 263936, 263981, 263982,

  Add more flags for the fpexc register from the ARM1176JZF-S Manual

  Initialise fpscr to a sane value when we create the pcb. This sets NaNs to
  be the default NaN and for denormalised numbers to be flushed to zero.

  VFP fixes/cleanups for ARM11:
   * Save the required VFP registers on context switch. If the exception bit
     is set we need to save and restore the FPINST register, and if the fp2v
     bit is also set we need to save and restore FPINST2.
   * Move saving and restoring the floating point control registers to C.
   * Clear the fpexc exception and fp2v flags on a floating-point exception.
   * Signal a SIGFPE if the fpexc exception flag is set on an undefined
     instruction. This is how the ARM core signals to software there is a
     floating-point exception.

  Add Cortex-A15 cpu id revisions.

  Exynos/Arndale...
  - Merge SoC-common parts
  - Enable iicbus device
  - Directly call kmem_alloc_contig to allocate framebuffer memory
    and pass VM_MEMATTR_UNCACHEABLE (no-cache, no-buffer).
    This fixes screen refreshing problem when data is updated too slowly.
  - Add support for keyboard used in Samsung Chromebook (ARM machine)
    Support covers device drivers for:
    - Interrupt Combiner
    - gpio/pad, External Interrupts Controller (pad)
    - I2C Interface
    - Chrome Embedded Controller
    - Chrome Keyboard
  - Use new gpio dev class in EHCI driver
  - Expand device tree information
  - Release i2c bus on detach.

4 files changed, 142 insertions, 226 deletions

diff --git a/sys/arm/conf/ARNDALE b/sys/arm/conf/ARNDALE
index 231bfc8..e50d3f4 100644
--- a/sys/arm/conf/ARNDALE
+++ b/sys/arm/conf/ARNDALE
@@ -17,122 +17,9 @@
 #
 # $FreeBSD$
 
+include		"EXYNOS5250.common"
 ident		ARNDALE
 
-include		"../samsung/exynos/std.exynos5"
-
-makeoptions	MODULES_OVERRIDE=""
-makeoptions	WITHOUT_MODULES="ahc"
-
-makeoptions	DEBUG=-g		# Build kernel with gdb(1) debug symbols
-makeoptions	WERROR="-Werror"
-
-options 	HZ=100
-options 	SCHED_4BSD		# 4BSD scheduler
-options 	INET			# InterNETworking
-options 	INET6			# IPv6 communications protocols
-options 	GEOM_PART_BSD		# BSD partition scheme
-options 	GEOM_PART_MBR		# MBR partition scheme
-options 	TMPFS			# Efficient memory filesystem
-options 	FFS			# Berkeley Fast Filesystem
-options 	SOFTUPDATES
-options 	UFS_ACL			# Support for access control lists
-options 	UFS_DIRHASH		# Improve performance on big directories
-options 	MSDOSFS			# MSDOS Filesystem
-options 	CD9660			# ISO 9660 Filesystem
-options 	PROCFS			# Process filesystem (requires PSEUDOFS)
-options 	PSEUDOFS		# Pseudo-filesystem framework
-options 	COMPAT_43		# Compatible with BSD 4.3 [KEEP THIS!]
-options 	SCSI_DELAY=5000		# Delay (in ms) before probing SCSI
-options 	KTRACE
-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
-options 	PREEMPTION
-options 	FREEBSD_BOOT_LOADER
-options 	VFP			# vfp/neon
-
-# Debugging
-makeoptions	DEBUG=-g		# Build kernel with gdb(1) debug symbols
-options 	BREAK_TO_DEBUGGER
-#options	VERBOSE_SYSINIT		# Enable verbose sysinit messages
-options 	KDB
-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 support
-options 	NFSCL			# Network Filesystem Client
-options 	NFSLOCKD		# Network Lock Manager
-options 	NFS_ROOT		# NFS usable as /, requires NFSCLIENT
-
-# Uncomment this for NFS root
-#options	NFS_ROOT		# NFS usable as /, requires NFSCL
-#options	BOOTP_NFSROOT
-#options	BOOTP_COMPAT
-#options	BOOTP
-#options	BOOTP_NFSV3
-#options	BOOTP_WIRED_TO=cpsw0
-
-device		mmc			# mmc/sd bus
-device		mmcsd			# mmc/sd flash cards
-device		sdhci			# generic sdhci
-
-options 	ROOTDEVNAME=\"ufs:/dev/da0\"
-
-#options	SMP
-
-# Pseudo devices
-
-device		loop
-device		random
-device		pty
-device		md
-device		gpio
-
-# USB support
-options 	USB_HOST_ALIGN=64	# Align usb buffers to cache line size.
-device		usb
-options 	USB_DEBUG
-#options	USB_REQ_DEBUG
-#options	USB_VERBOSE
-#device		musb
-device		ehci
-#device		ohci
-
-device		umass
-device		scbus			# SCSI bus (required for SCSI)
-device		da			# Direct Access (disks)
-device		pass
-
-# SATA
-#device		ata
-#device		atadisk
-#device		mvs
-
-# Serial ports
-device		uart
-
-# I2C (TWSI)
-#device		iic
-#device		iicbus
-
-# Ethernet
-device		ether
-device		mii
-device		smsc
-device		smscphy
-
-# USB ethernet support, requires miibus
-device		miibus
-device		axe			# ASIX Electronics USB Ethernet
-device		bpf			# Berkeley packet filter
-
 #FDT
 options 	FDT
 options 	FDT_DTB_STATIC
diff --git a/sys/arm/conf/CHROMEBOOK b/sys/arm/conf/CHROMEBOOK
index 3a2a469..ea69035 100644
--- a/sys/arm/conf/CHROMEBOOK
+++ b/sys/arm/conf/CHROMEBOOK
@@ -17,106 +17,13 @@
 #
 # $FreeBSD$
 
+include		"EXYNOS5250.common"
 ident		CHROMEBOOK
 
-include		"../samsung/exynos/std.exynos5"
+hints		"CHROMEBOOK.hints"
 
-makeoptions	MODULES_OVERRIDE=""
-makeoptions	WITHOUT_MODULES="ahc"
-
-makeoptions	DEBUG=-g		# Build kernel with gdb(1) debug symbols
-makeoptions	WERROR="-Werror"
-
-options 	HZ=100
-options 	SCHED_4BSD		# 4BSD scheduler
-options 	INET			# InterNETworking
-options 	INET6			# IPv6 communications protocols
-options 	GEOM_PART_BSD		# BSD partition scheme
-options 	GEOM_PART_MBR		# MBR partition scheme
-options 	TMPFS			# Efficient memory filesystem
-options 	FFS			# Berkeley Fast Filesystem
-options 	SOFTUPDATES
-options 	UFS_ACL			# Support for access control lists
-options 	UFS_DIRHASH		# Improve performance on big directories
-options 	MSDOSFS			# MSDOS Filesystem
-options 	CD9660			# ISO 9660 Filesystem
-options 	PROCFS			# Process filesystem (requires PSEUDOFS)
-options 	PSEUDOFS		# Pseudo-filesystem framework
-options 	COMPAT_43		# Compatible with BSD 4.3 [KEEP THIS!]
-options 	SCSI_DELAY=5000		# Delay (in ms) before probing SCSI
-options 	KTRACE
-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
-options 	PREEMPTION
-options 	FREEBSD_BOOT_LOADER
-options 	VFP			# vfp/neon
-
-# Debugging
-makeoptions	DEBUG=-g		# Build kernel with gdb(1) debug symbols
-options 	BREAK_TO_DEBUGGER
-#options	VERBOSE_SYSINIT		# Enable verbose sysinit messages
-options 	KDB
-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 support
-options 	NFSCL			# Network Filesystem Client
-options 	NFSLOCKD		# Network Lock Manager
-options 	NFS_ROOT		# NFS usable as /, requires NFSCLIENT
-
-# Uncomment this for NFS root
-#options	NFS_ROOT		# NFS usable as /, requires NFSCL
-#options	BOOTP_NFSROOT
-#options	BOOTP_COMPAT
-#options	BOOTP
-#options	BOOTP_NFSV3
-#options	BOOTP_WIRED_TO=cpsw0
-
-device		mmc			# mmc/sd bus
-device		mmcsd			# mmc/sd flash cards
-device		sdhci			# generic sdhci
-
-options 	ROOTDEVNAME=\"ufs:/dev/da0\"
-
-#options	SMP
-
-# Pseudo devices
-
-device		loop
-device		random
-device		pty
-device		md
-device		gpio
-
-# USB support
-options 	USB_HOST_ALIGN=64	# Align usb buffers to cache line size.
-device		usb
-options 	USB_DEBUG
-#options	USB_REQ_DEBUG
-#options	USB_VERBOSE
-#device		musb
-device		ehci
-#device		ohci
-
-device		umass
-device		scbus			# SCSI bus (required for SCSI)
-device		da			# Direct Access (disks)
-device		pass
-
-# SATA
-#device		ata
-#device		atadisk
-#device		mvs
-
-# Serial ports
-device		uart
+device		chrome_ec	# Chrome Embedded Controller
+device		chrome_kb	# Chrome Keyboard
 
 # Framebuffer
 device		vt
@@ -125,21 +32,6 @@ options 	SC_DFLT_FONT		# compile font in
 makeoptions	SC_DFLT_FONT=cp437
 device		ukbd
 
-# I2C (TWSI)
-#device		iic
-#device		iicbus
-
-# Ethernet
-device		ether
-device		mii
-device		smsc
-device		smscphy
-
-# USB ethernet support, requires miibus
-device		miibus
-device		axe			# ASIX Electronics USB Ethernet
-device		bpf			# Berkeley packet filter
-
 #FDT
 options 	FDT
 options 	FDT_DTB_STATIC
diff --git a/sys/arm/conf/CHROMEBOOK.hints b/sys/arm/conf/CHROMEBOOK.hints
new file mode 100644
index 0000000..908eb9e
--- /dev/null
+++ b/sys/arm/conf/CHROMEBOOK.hints
@@ -0,0 +1,5 @@
+# $FreeBSD$
+
+# Chrome Embedded Controller
+hint.chrome_ec.0.at="iicbus0"
+hint.chrome_ec.0.addr=0x1e
diff --git a/sys/arm/conf/EXYNOS5250.common b/sys/arm/conf/EXYNOS5250.common
new file mode 100644
index 0000000..474cb6b
--- /dev/null
+++ b/sys/arm/conf/EXYNOS5250.common
@@ -0,0 +1,132 @@
+# Kernel configuration for Samsung Exynos 5250 boards.
+#
+# 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.
+#
+# $FreeBSD$
+
+include		"../samsung/exynos/std.exynos5"
+
+makeoptions	MODULES_OVERRIDE=""
+makeoptions	WITHOUT_MODULES="ahc"
+
+makeoptions	DEBUG=-g		# Build kernel with gdb(1) debug symbols
+makeoptions	WERROR="-Werror"
+
+options 	HZ=100
+options 	SCHED_4BSD		# 4BSD scheduler
+options 	INET			# InterNETworking
+options 	INET6			# IPv6 communications protocols
+options 	GEOM_PART_BSD		# BSD partition scheme
+options 	GEOM_PART_MBR		# MBR partition scheme
+options 	TMPFS			# Efficient memory filesystem
+options 	FFS			# Berkeley Fast Filesystem
+options 	SOFTUPDATES
+options 	UFS_ACL			# Support for access control lists
+options 	UFS_DIRHASH		# Improve performance on big directories
+options 	MSDOSFS			# MSDOS Filesystem
+options 	CD9660			# ISO 9660 Filesystem
+options 	PROCFS			# Process filesystem (requires PSEUDOFS)
+options 	PSEUDOFS		# Pseudo-filesystem framework
+options 	COMPAT_43		# Compatible with BSD 4.3 [KEEP THIS!]
+options 	SCSI_DELAY=5000		# Delay (in ms) before probing SCSI
+options 	KTRACE
+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
+options 	PREEMPTION
+options 	FREEBSD_BOOT_LOADER
+options 	VFP			# vfp/neon
+
+# Debugging
+makeoptions	DEBUG=-g		# Build kernel with gdb(1) debug symbols
+options 	BREAK_TO_DEBUGGER
+#options	VERBOSE_SYSINIT		# Enable verbose sysinit messages
+options 	KDB
+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 support
+options 	NFSCL			# Network Filesystem Client
+options 	NFSLOCKD		# Network Lock Manager
+options 	NFS_ROOT		# NFS usable as /, requires NFSCLIENT
+
+# Uncomment this for NFS root
+#options	NFS_ROOT		# NFS usable as /, requires NFSCL
+#options	BOOTP_NFSROOT
+#options	BOOTP_COMPAT
+#options	BOOTP
+#options	BOOTP_NFSV3
+#options	BOOTP_WIRED_TO=ue0
+
+device		mmc			# mmc/sd bus
+device		mmcsd			# mmc/sd flash cards
+device		sdhci			# generic sdhci
+
+options 	ROOTDEVNAME=\"ufs:/dev/da0\"
+
+#options	SMP
+
+# Pseudo devices
+
+device		loop
+device		random
+device		pty
+device		md
+device		gpio
+
+# USB support
+options 	USB_HOST_ALIGN=64	# Align usb buffers to cache line size.
+device		usb
+options 	USB_DEBUG
+#options	USB_REQ_DEBUG
+#options	USB_VERBOSE
+#device		musb
+device		ehci
+#device		ohci
+
+device		umass
+device		scbus			# SCSI bus (required for SCSI)
+device		da			# Direct Access (disks)
+device		pass
+
+# SATA
+#device		ata
+#device		atadisk
+#device		mvs
+
+# Serial ports
+device		uart
+
+# I2C (TWSI)
+device		iic
+device		iicbus
+
+# Ethernet
+device		ether
+device		mii
+device		smsc
+device		smscphy
+
+# USB ethernet support, requires miibus
+device		miibus
+device		axe			# ASIX Electronics USB Ethernet
+device		bpf			# Berkeley packet filter