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authorLinus Torvalds <torvalds@linux-foundation.org>2009-04-03 15:15:25 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-03 15:15:25 -0700
commit4e76c5ccd5ac9bd003467d3bb0f49b18572dd4cd (patch)
tree1c1b58b1964fec04ae7f830b53a47f1693993135 /arch
parentb983471794e568fd71fa767da77a62ba517c3e63 (diff)
parent65127d28e312bb6b38ce84a7bb71d762ef63ad4c (diff)
downloadlinux-linaro-stable-4e76c5ccd5ac9bd003467d3bb0f49b18572dd4cd.tar.gz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/czankel/xtensa-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/czankel/xtensa-2.6: (21 commits) xtensa: we don't need to include asm/io.h xtensa: only build platform or variant if they contain a Makefile xtensa: make startup code discardable xtensa: ccount clocksource xtensa: remove platform rtc hooks xtensa: use generic sched_clock() xtensa: platform: s6105 xtensa: let platform override KERNELOFFSET xtensa: s6000 variant xtensa: s6000 variant core definitions xtensa: variant irq set callbacks xtensa: variant-specific code xtensa: nommu support xtensa: add flat support xtensa: enforce slab alignment to maximum register width xtensa: cope with ram beginning at higher addresses xtensa: don't make bootmem bitmap larger than required xtensa: fix init_bootmem_node() argument order xtensa: use correct stack pointer for stack traces xtensa: beat Kconfig into shape ...
Diffstat (limited to 'arch')
-rw-r--r--arch/xtensa/Kconfig184
-rw-r--r--arch/xtensa/Makefile15
-rw-r--r--arch/xtensa/configs/s6105_defconfig530
-rw-r--r--arch/xtensa/include/asm/cacheflush.h10
-rw-r--r--arch/xtensa/include/asm/dma.h3
-rw-r--r--arch/xtensa/include/asm/flat.h12
-rw-r--r--arch/xtensa/include/asm/gpio.h56
-rw-r--r--arch/xtensa/include/asm/io.h9
-rw-r--r--arch/xtensa/include/asm/irq.h7
-rw-r--r--arch/xtensa/include/asm/mmu.h5
-rw-r--r--arch/xtensa/include/asm/mmu_context.h9
-rw-r--r--arch/xtensa/include/asm/nommu.h3
-rw-r--r--arch/xtensa/include/asm/nommu_context.h25
-rw-r--r--arch/xtensa/include/asm/page.h14
-rw-r--r--arch/xtensa/include/asm/pgtable.h13
-rw-r--r--arch/xtensa/include/asm/platform.h11
-rw-r--r--arch/xtensa/include/asm/processor.h8
-rw-r--r--arch/xtensa/kernel/entry.S3
-rw-r--r--arch/xtensa/kernel/head.S5
-rw-r--r--arch/xtensa/kernel/irq.c14
-rw-r--r--arch/xtensa/kernel/platform.c2
-rw-r--r--arch/xtensa/kernel/setup.c7
-rw-r--r--arch/xtensa/kernel/time.c131
-rw-r--r--arch/xtensa/kernel/traps.c16
-rw-r--r--arch/xtensa/kernel/vectors.S4
-rw-r--r--arch/xtensa/kernel/vmlinux.lds.S3
-rw-r--r--arch/xtensa/mm/Makefile3
-rw-r--r--arch/xtensa/mm/init.c78
-rw-r--r--arch/xtensa/mm/misc.S2
-rw-r--r--arch/xtensa/mm/mmu.c70
-rw-r--r--arch/xtensa/platforms/s6105/Makefile3
-rw-r--r--arch/xtensa/platforms/s6105/device.c67
-rw-r--r--arch/xtensa/platforms/s6105/include/platform/gpio.h27
-rw-r--r--arch/xtensa/platforms/s6105/include/platform/hardware.h11
-rw-r--r--arch/xtensa/platforms/s6105/include/platform/serial.h8
-rw-r--r--arch/xtensa/platforms/s6105/setup.c61
-rw-r--r--arch/xtensa/platforms/xt2000/include/platform/hardware.h1
-rw-r--r--arch/xtensa/variants/s6000/Makefile3
-rw-r--r--arch/xtensa/variants/s6000/gpio.c71
-rw-r--r--arch/xtensa/variants/s6000/include/variant/core.h431
-rw-r--r--arch/xtensa/variants/s6000/include/variant/hardware.h259
-rw-r--r--arch/xtensa/variants/s6000/include/variant/irq.h9
-rw-r--r--arch/xtensa/variants/s6000/include/variant/tie-asm.h304
-rw-r--r--arch/xtensa/variants/s6000/include/variant/tie.h191
-rw-r--r--arch/xtensa/variants/s6000/irq.c74
45 files changed, 2466 insertions, 306 deletions
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 981200830432..fa6dc4dd3b19 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -4,16 +4,13 @@
mainmenu "Linux/Xtensa Kernel Configuration"
config FRAME_POINTER
- bool
- default n
+ def_bool n
config ZONE_DMA
- bool
- default y
+ def_bool y
config XTENSA
- bool
- default y
+ def_bool y
select HAVE_IDE
help
Xtensa processors are 32-bit RISC machines designed by Tensilica
@@ -24,28 +21,25 @@ config XTENSA
a home page at <http://xtensa.sourceforge.net/>.
config RWSEM_XCHGADD_ALGORITHM
- bool
- default y
+ def_bool y
config GENERIC_FIND_NEXT_BIT
- bool
- default y
+ def_bool y
config GENERIC_HWEIGHT
- bool
- default y
+ def_bool y
config GENERIC_HARDIRQS
- bool
- default y
+ def_bool y
+
+config GENERIC_GPIO
+ def_bool y
config ARCH_HAS_ILOG2_U32
- bool
- default n
+ def_bool n
config ARCH_HAS_ILOG2_U64
- bool
- default n
+ def_bool n
config NO_IOPORT
def_bool y
@@ -54,9 +48,18 @@ config HZ
int
default 100
+config GENERIC_TIME
+ def_bool y
+
source "init/Kconfig"
source "kernel/Kconfig.freezer"
+config MMU
+ def_bool n
+
+config VARIANT_IRQ_SWITCH
+ def_bool n
+
menu "Processor type and features"
choice
@@ -65,38 +68,41 @@ choice
config XTENSA_VARIANT_FSF
bool "fsf - default (not generic) configuration"
+ select MMU
config XTENSA_VARIANT_DC232B
bool "dc232b - Diamond 232L Standard Core Rev.B (LE)"
+ select MMU
help
- This variant refers to Tensilica's Diamond 232L Standard core Rev.B (LE).
-endchoice
+ This variant refers to Tensilica's Diamond 232L Standard core Rev.B (LE).
-config MMU
- bool
- default y
+config XTENSA_VARIANT_S6000
+ bool "s6000 - Stretch software configurable processor"
+ select VARIANT_IRQ_SWITCH
+ select ARCH_REQUIRE_GPIOLIB
+endchoice
config XTENSA_UNALIGNED_USER
bool "Unaligned memory access in use space"
- ---help---
- The Xtensa architecture currently does not handle unaligned
- memory accesses in hardware but through an exception handler.
- Per default, unaligned memory accesses are disabled in user space.
+ help
+ The Xtensa architecture currently does not handle unaligned
+ memory accesses in hardware but through an exception handler.
+ Per default, unaligned memory accesses are disabled in user space.
- Say Y here to enable unaligned memory access in user space.
+ Say Y here to enable unaligned memory access in user space.
config PREEMPT
bool "Preemptible Kernel"
- ---help---
- This option reduces the latency of the kernel when reacting to
- real-time or interactive events by allowing a low priority process to
- be preempted even if it is in kernel mode executing a system call.
- Unfortunately the kernel code has some race conditions if both
- CONFIG_SMP and CONFIG_PREEMPT are enabled, so this option is
- currently disabled if you are building an SMP kernel.
+ help
+ This option reduces the latency of the kernel when reacting to
+ real-time or interactive events by allowing a low priority process to
+ be preempted even if it is in kernel mode executing a system call.
+ Unfortunately the kernel code has some race conditions if both
+ CONFIG_SMP and CONFIG_PREEMPT are enabled, so this option is
+ currently disabled if you are building an SMP kernel.
- Say Y here if you are building a kernel for a desktop, embedded
- or real-time system. Say N if you are unsure.
+ Say Y here if you are building a kernel for a desktop, embedded
+ or real-time system. Say N if you are unsure.
config MATH_EMULATION
bool "Math emulation"
@@ -105,6 +111,32 @@ config MATH_EMULATION
endmenu
+config XTENSA_CALIBRATE_CCOUNT
+ def_bool n
+ help
+ On some platforms (XT2000, for example), the CPU clock rate can
+ vary. The frequency can be determined, however, by measuring
+ against a well known, fixed frequency, such as an UART oscillator.
+
+config SERIAL_CONSOLE
+ def_bool n
+
+config XTENSA_ISS_NETWORK
+ def_bool n
+
+menu "Bus options"
+
+config PCI
+ bool "PCI support"
+ default y
+ help
+ Find out whether you have a PCI motherboard. PCI is the name of a
+ bus system, i.e. the way the CPU talks to the other stuff inside
+ your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
+ VESA. If you have PCI, say Y, otherwise N.
+
+source "drivers/pci/Kconfig"
+
menu "Platform options"
choice
@@ -113,33 +145,35 @@ choice
config XTENSA_PLATFORM_ISS
bool "ISS"
+ select XTENSA_CALIBRATE_CCOUNT
+ select SERIAL_CONSOLE
+ select XTENSA_ISS_NETWORK
help
ISS is an acronym for Tensilica's Instruction Set Simulator.
config XTENSA_PLATFORM_XT2000
bool "XT2000"
+ select XTENSA_CALIBRATE_CCOUNT
+ select PCI
help
XT2000 is the name of Tensilica's feature-rich emulation platform.
This hardware is capable of running a full Linux distribution.
-endchoice
+config XTENSA_PLATFORM_S6105
+ bool "S6105"
+ select SERIAL_CONSOLE
+endchoice
-config XTENSA_CALIBRATE_CCOUNT
- bool "Auto calibration of the CPU clock rate"
- ---help---
- On some platforms (XT2000, for example), the CPU clock rate can
- vary. The frequency can be determined, however, by measuring
- against a well known, fixed frequency, such as an UART oscillator.
config XTENSA_CPU_CLOCK
int "CPU clock rate [MHz]"
depends on !XTENSA_CALIBRATE_CCOUNT
- default "16"
+ default 16
config GENERIC_CALIBRATE_DELAY
bool "Auto calibration of the BogoMIPS value"
- ---help---
+ help
The BogoMIPS value can easily be derived from the CPU frequency.
config CMDLINE_BOOL
@@ -156,52 +190,27 @@ config CMDLINE
time by entering them here. As a minimum, you should specify the
memory size and the root device (e.g., mem=64M root=/dev/nfs).
-config SERIAL_CONSOLE
- bool
- depends on XTENSA_PLATFORM_ISS
- default y
-
-config XTENSA_ISS_NETWORK
- bool
- depends on XTENSA_PLATFORM_ISS
- default y
-
source "mm/Kconfig"
endmenu
-menu "Bus options"
-
-config PCI
- bool "PCI support" if !XTENSA_PLATFORM_ISS
- depends on !XTENSA_PLATFORM_ISS
- default y
+config HOTPLUG
+ bool "Support for hot-pluggable devices"
help
- Find out whether you have a PCI motherboard. PCI is the name of a
- bus system, i.e. the way the CPU talks to the other stuff inside
- your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
- VESA. If you have PCI, say Y, otherwise N.
+ Say Y here if you want to plug devices into your computer while
+ the system is running, and be able to use them quickly. In many
+ cases, the devices can likewise be unplugged at any time too.
-source "drivers/pci/Kconfig"
+ One well known example of this is PCMCIA- or PC-cards, credit-card
+ size devices such as network cards, modems or hard drives which are
+ plugged into slots found on all modern laptop computers. Another
+ example, used on modern desktops as well as laptops, is USB.
-config HOTPLUG
-
- bool "Support for hot-pluggable devices"
- ---help---
- Say Y here if you want to plug devices into your computer while
- the system is running, and be able to use them quickly. In many
- cases, the devices can likewise be unplugged at any time too.
-
- One well known example of this is PCMCIA- or PC-cards, credit-card
- size devices such as network cards, modems or hard drives which are
- plugged into slots found on all modern laptop computers. Another
- example, used on modern desktops as well as laptops, is USB.
-
- Enable HOTPLUG and build a modular kernel. Get agent software
- (from <http://linux-hotplug.sourceforge.net/>) and install it.
- Then your kernel will automatically call out to a user mode "policy
- agent" (/sbin/hotplug) to load modules and set up software needed
- to use devices as you hotplug them.
+ Enable HOTPLUG and build a modular kernel. Get agent software
+ (from <http://linux-hotplug.sourceforge.net/>) and install it.
+ Then your kernel will automatically call out to a user mode "policy
+ agent" (/sbin/hotplug) to load modules and set up software needed
+ to use devices as you hotplug them.
source "drivers/pcmcia/Kconfig"
@@ -213,9 +222,8 @@ menu "Executable file formats"
# only elf supported
config KCORE_ELF
- bool
+ def_bool y
depends on PROC_FS
- default y
help
If you enabled support for /proc file system then the file
/proc/kcore will contain the kernel core image in ELF format. This
@@ -240,7 +248,7 @@ source "fs/Kconfig"
menu "Xtensa initrd options"
depends on BLK_DEV_INITRD
- config EMBEDDED_RAMDISK
+config EMBEDDED_RAMDISK
bool "Embed root filesystem ramdisk into the kernel"
config EMBEDDED_RAMDISK_IMAGE
diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile
index 1da55fe4beff..4caffac3ca2e 100644
--- a/arch/xtensa/Makefile
+++ b/arch/xtensa/Makefile
@@ -15,6 +15,7 @@
variant-$(CONFIG_XTENSA_VARIANT_FSF) := fsf
variant-$(CONFIG_XTENSA_VARIANT_DC232B) := dc232b
+variant-$(CONFIG_XTENSA_VARIANT_S6000) := s6000
variant-$(CONFIG_XTENSA_VARIANT_LINUX_CUSTOM) := custom
VARIANT = $(variant-y)
@@ -24,6 +25,7 @@ export VARIANT
platform-$(CONFIG_XTENSA_PLATFORM_XT2000) := xt2000
platform-$(CONFIG_XTENSA_PLATFORM_ISS) := iss
+platform-$(CONFIG_XTENSA_PLATFORM_S6105) := s6105
PLATFORM = $(platform-y)
export PLATFORM
@@ -62,20 +64,23 @@ ifneq ($(VARIANT),)
endif
endif
-#
+# Only build variant and/or platform if it includes a Makefile
+
+buildvar := $(shell test -a $(srctree)/arch/xtensa/variants/$(VARIANT)/Makefile && echo arch/xtensa/variants/$(VARIANT)/)
+buildplf := $(shell test -a $(srctree)/arch/xtensa/platforms/$(PLATFORM)/Makefile && echo arch/xtensa/platforms/$(PLATFORM)/)
+
+# Find libgcc.a
LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
head-y := arch/xtensa/kernel/head.o
core-y += arch/xtensa/kernel/ arch/xtensa/mm/
-ifneq ($(PLATFORM),)
-core-y += arch/xtensa/platforms/$(PLATFORM)/
-endif
+core-y += $(buildvar) $(buildplf)
+
libs-y += arch/xtensa/lib/ $(LIBGCC)
boot := arch/xtensa/boot
-
all: zImage
bzImage : zImage
diff --git a/arch/xtensa/configs/s6105_defconfig b/arch/xtensa/configs/s6105_defconfig
new file mode 100644
index 000000000000..6e1deff41590
--- /dev/null
+++ b/arch/xtensa/configs/s6105_defconfig
@@ -0,0 +1,530 @@
+#
+# Automatically generated make config: don't edit
+# Linux kernel version: 2.6.29-rc7-s6
+# Tue Mar 10 11:09:26 2009
+#
+# CONFIG_FRAME_POINTER is not set
+CONFIG_ZONE_DMA=y
+CONFIG_XTENSA=y
+CONFIG_RWSEM_XCHGADD_ALGORITHM=y
+CONFIG_GENERIC_FIND_NEXT_BIT=y
+CONFIG_GENERIC_HWEIGHT=y
+CONFIG_GENERIC_HARDIRQS=y
+CONFIG_GENERIC_GPIO=y
+# CONFIG_ARCH_HAS_ILOG2_U32 is not set
+# CONFIG_ARCH_HAS_ILOG2_U64 is not set
+CONFIG_NO_IOPORT=y
+CONFIG_HZ=100
+CONFIG_GENERIC_TIME=y
+CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
+
+#
+# General setup
+#
+CONFIG_EXPERIMENTAL=y
+CONFIG_BROKEN_ON_SMP=y
+CONFIG_LOCK_KERNEL=y
+CONFIG_INIT_ENV_ARG_LIMIT=32
+CONFIG_LOCALVERSION=""
+CONFIG_LOCALVERSION_AUTO=y
+CONFIG_SYSVIPC=y
+CONFIG_SYSVIPC_SYSCTL=y
+# CONFIG_POSIX_MQUEUE is not set
+# CONFIG_BSD_PROCESS_ACCT is not set
+# CONFIG_TASKSTATS is not set
+# CONFIG_AUDIT is not set
+
+#
+# RCU Subsystem
+#
+# CONFIG_CLASSIC_RCU is not set
+# CONFIG_TREE_RCU is not set
+CONFIG_PREEMPT_RCU=y
+# CONFIG_RCU_TRACE is not set
+# CONFIG_TREE_RCU_TRACE is not set
+# CONFIG_PREEMPT_RCU_TRACE is not set
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_LOG_BUF_SHIFT=16
+# CONFIG_GROUP_SCHED is not set
+# CONFIG_CGROUPS is not set
+# CONFIG_SYSFS_DEPRECATED_V2 is not set
+# CONFIG_RELAY is not set
+# CONFIG_NAMESPACES is not set
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_SYSCTL=y
+CONFIG_EMBEDDED=y
+CONFIG_SYSCTL_SYSCALL=y
+CONFIG_KALLSYMS=y
+# CONFIG_KALLSYMS_ALL is not set
+# CONFIG_KALLSYMS_EXTRA_PASS is not set
+# CONFIG_HOTPLUG is not set
+CONFIG_PRINTK=y
+CONFIG_BUG=y
+CONFIG_ELF_CORE=y
+# CONFIG_COMPAT_BRK is not set
+CONFIG_BASE_FULL=y
+CONFIG_FUTEX=y
+CONFIG_ANON_INODES=y
+CONFIG_EPOLL=y
+CONFIG_SIGNALFD=y
+CONFIG_TIMERFD=y
+CONFIG_EVENTFD=y
+CONFIG_AIO=y
+CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_SLAB=y
+# CONFIG_SLUB is not set
+# CONFIG_SLOB is not set
+# CONFIG_PROFILING is not set
+# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
+CONFIG_SLABINFO=y
+CONFIG_RT_MUTEXES=y
+CONFIG_BASE_SMALL=0
+# CONFIG_MODULES is not set
+CONFIG_BLOCK=y
+# CONFIG_LBD is not set
+# CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_BLK_DEV_BSG is not set
+# CONFIG_BLK_DEV_INTEGRITY is not set
+
+#
+# IO Schedulers
+#
+CONFIG_IOSCHED_NOOP=y
+# CONFIG_IOSCHED_AS is not set
+# CONFIG_IOSCHED_DEADLINE is not set
+CONFIG_IOSCHED_CFQ=y
+# CONFIG_DEFAULT_AS is not set
+# CONFIG_DEFAULT_DEADLINE is not set
+CONFIG_DEFAULT_CFQ=y
+# CONFIG_DEFAULT_NOOP is not set
+CONFIG_DEFAULT_IOSCHED="cfq"
+# CONFIG_FREEZER is not set
+# CONFIG_MMU is not set
+CONFIG_VARIANT_IRQ_SWITCH=y
+
+#
+# Processor type and features
+#
+# CONFIG_XTENSA_VARIANT_FSF is not set
+# CONFIG_XTENSA_VARIANT_DC232B is not set
+CONFIG_XTENSA_VARIANT_S6000=y
+# CONFIG_XTENSA_UNALIGNED_USER is not set
+CONFIG_PREEMPT=y
+# CONFIG_MATH_EMULATION is not set
+# CONFIG_HIGHMEM is not set
+# CONFIG_XTENSA_CALIBRATE_CCOUNT is not set
+CONFIG_SERIAL_CONSOLE=y
+# CONFIG_XTENSA_ISS_NETWORK is not set
+
+#
+# Bus options
+#
+# CONFIG_PCI is not set
+# CONFIG_ARCH_SUPPORTS_MSI is not set
+
+#
+# Platform options
+#
+# CONFIG_XTENSA_PLATFORM_ISS is not set
+# CONFIG_XTENSA_PLATFORM_XT2000 is not set
+CONFIG_XTENSA_PLATFORM_S6105=y
+CONFIG_XTENSA_CPU_CLOCK=300
+CONFIG_GENERIC_CALIBRATE_DELAY=y
+CONFIG_CMDLINE_BOOL=y
+CONFIG_CMDLINE="console=ttyS1,38400 debug bootmem_debug loglevel=7"
+CONFIG_SELECT_MEMORY_MODEL=y
+CONFIG_FLATMEM_MANUAL=y
+# CONFIG_DISCONTIGMEM_MANUAL is not set
+# CONFIG_SPARSEMEM_MANUAL is not set
+CONFIG_FLATMEM=y
+CONFIG_FLAT_NODE_MEM_MAP=y
+CONFIG_PAGEFLAGS_EXTENDED=y
+CONFIG_SPLIT_PTLOCK_CPUS=4
+# CONFIG_PHYS_ADDR_T_64BIT is not set
+CONFIG_ZONE_DMA_FLAG=1
+CONFIG_VIRT_TO_BUS=y
+
+#
+# Executable file formats
+#
+CONFIG_KCORE_ELF=y
+CONFIG_BINFMT_FLAT=y
+# CONFIG_BINFMT_ZFLAT is not set
+# CONFIG_BINFMT_SHARED_FLAT is not set
+# CONFIG_HAVE_AOUT is not set
+# CONFIG_BINFMT_MISC is not set
+CONFIG_NET=y
+
+#
+# Networking options
+#
+CONFIG_COMPAT_NET_DEV_OPS=y
+CONFIG_PACKET=y
+# CONFIG_PACKET_MMAP is not set
+CONFIG_UNIX=y
+# CONFIG_NET_KEY is not set
+CONFIG_INET=y
+# CONFIG_IP_MULTICAST is not set
+# CONFIG_IP_ADVANCED_ROUTER is not set
+CONFIG_IP_FIB_HASH=y
+# CONFIG_IP_PNP is not set
+# CONFIG_NET_IPIP is not set
+# CONFIG_NET_IPGRE is not set
+# CONFIG_ARPD is not set
+# CONFIG_SYN_COOKIES is not set
+# CONFIG_INET_AH is not set
+# CONFIG_INET_ESP is not set
+# CONFIG_INET_IPCOMP is not set
+# CONFIG_INET_XFRM_TUNNEL is not set
+# CONFIG_INET_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_BEET is not set
+# CONFIG_INET_LRO is not set
+# CONFIG_INET_DIAG is not set
+# CONFIG_TCP_CONG_ADVANCED is not set
+CONFIG_TCP_CONG_CUBIC=y
+CONFIG_DEFAULT_TCP_CONG="cubic"
+# CONFIG_TCP_MD5SIG is not set
+# CONFIG_IPV6 is not set
+# CONFIG_NETWORK_SECMARK is not set
+# CONFIG_NETFILTER is not set
+# CONFIG_IP_DCCP is not set
+# CONFIG_IP_SCTP is not set
+# CONFIG_TIPC is not set
+# CONFIG_ATM is not set
+# CONFIG_BRIDGE is not set
+# CONFIG_NET_DSA is not set
+# CONFIG_VLAN_8021Q is not set
+# CONFIG_DECNET is not set
+# CONFIG_LLC2 is not set
+# CONFIG_IPX is not set
+# CONFIG_ATALK is not set
+# CONFIG_X25 is not set
+# CONFIG_LAPB is not set
+# CONFIG_ECONET is not set
+# CONFIG_WAN_ROUTER is not set
+# CONFIG_NET_SCHED is not set
+# CONFIG_DCB is not set
+
+#
+# Network testing
+#
+# CONFIG_NET_PKTGEN is not set
+# CONFIG_HAMRADIO is not set
+# CONFIG_CAN is not set
+# CONFIG_IRDA is not set
+# CONFIG_BT is not set
+# CONFIG_AF_RXRPC is not set
+# CONFIG_PHONET is not set
+# CONFIG_WIRELESS is not set
+# CONFIG_WIMAX is not set
+# CONFIG_RFKILL is not set
+# CONFIG_NET_9P is not set
+
+#
+# Device Drivers
+#
+
+#
+# Generic Driver Options
+#
+CONFIG_STANDALONE=y
+CONFIG_PREVENT_FIRMWARE_BUILD=y
+# CONFIG_DEBUG_DRIVER is not set
+# CONFIG_DEBUG_DEVRES is not set
+# CONFIG_SYS_HYPERVISOR is not set
+# CONFIG_CONNECTOR is not set
+# CONFIG_MTD is not set
+# CONFIG_PARPORT is not set
+CONFIG_BLK_DEV=y
+# CONFIG_BLK_DEV_COW_COMMON is not set
+# CONFIG_BLK_DEV_LOOP is not set
+# CONFIG_BLK_DEV_NBD is not set
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=16
+CONFIG_BLK_DEV_RAM_SIZE=4096
+# CONFIG_BLK_DEV_XIP is not set
+# CONFIG_CDROM_PKTCDVD is not set
+# CONFIG_ATA_OVER_ETH is not set
+# CONFIG_BLK_DEV_HD is not set
+# CONFIG_MISC_DEVICES is not set
+CONFIG_HAVE_IDE=y
+# CONFIG_IDE is not set
+
+#
+# SCSI device support
+#
+# CONFIG_RAID_ATTRS is not set
+# CONFIG_SCSI is not set
+# CONFIG_SCSI_DMA is not set
+# CONFIG_SCSI_NETLINK is not set
+# CONFIG_ATA is not set
+# CONFIG_MD is not set
+# CONFIG_NETDEVICES is not set
+# CONFIG_ISDN is not set
+# CONFIG_PHONE is not set
+
+#
+# Input device support
+#
+# CONFIG_INPUT is not set
+
+#
+# Hardware I/O ports
+#
+# CONFIG_SERIO is not set
+# CONFIG_GAMEPORT is not set
+
+#
+# Character devices
+#
+# CONFIG_VT is not set
+# CONFIG_DEVKMEM is not set
+# CONFIG_SERIAL_NONSTANDARD is not set
+
+#
+# Serial drivers
+#
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_NR_UARTS=2
+CONFIG_SERIAL_8250_RUNTIME_UARTS=2
+# CONFIG_SERIAL_8250_EXTENDED is not set
+
+#
+# Non-8250 serial port support
+#
+CONFIG_SERIAL_CORE=y
+CONFIG_SERIAL_CORE_CONSOLE=y
+CONFIG_UNIX98_PTYS=y
+# CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
+# CONFIG_LEGACY_PTYS is not set
+# CONFIG_IPMI_HANDLER is not set
+# CONFIG_HW_RANDOM is not set
+# CONFIG_RTC is not set
+# CONFIG_GEN_RTC is not set
+# CONFIG_R3964 is not set
+# CONFIG_RAW_DRIVER is not set
+# CONFIG_TCG_TPM is not set
+# CONFIG_I2C is not set
+# CONFIG_SPI is not set
+CONFIG_ARCH_REQUIRE_GPIOLIB=y
+CONFIG_GPIOLIB=y
+# CONFIG_DEBUG_GPIO is not set
+# CONFIG_GPIO_SYSFS is not set
+
+#
+# Memory mapped GPIO expanders:
+#
+
+#
+# I2C GPIO expanders:
+#
+
+#
+# PCI GPIO expanders:
+#
+
+#
+# SPI GPIO expanders:
+#
+# CONFIG_W1 is not set
+# CONFIG_POWER_SUPPLY is not set
+# CONFIG_HWMON is not set
+# CONFIG_THERMAL is not set
+# CONFIG_THERMAL_HWMON is not set
+# CONFIG_WATCHDOG is not set
+CONFIG_SSB_POSSIBLE=y
+
+#
+# Sonics Silicon Backplane
+#
+# CONFIG_SSB is not set
+
+#
+# Multifunction device drivers
+#
+# CONFIG_MFD_CORE is not set
+# CONFIG_MFD_SM501 is not set
+# CONFIG_HTC_PASIC3 is not set
+# CONFIG_MFD_TMIO is not set
+# CONFIG_REGULATOR is not set
+
+#
+# Multimedia devices
+#
+
+#
+# Multimedia core support
+#
+# CONFIG_VIDEO_DEV is not set
+# CONFIG_DVB_CORE is not set
+# CONFIG_VIDEO_MEDIA is not set
+
+#
+# Multimedia drivers
+#
+# CONFIG_DAB is not set
+
+#
+# Graphics support
+#
+# CONFIG_VGASTATE is not set
+# CONFIG_VIDEO_OUTPUT_CONTROL is not set
+# CONFIG_FB is not set
+# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
+
+#
+# Display device support
+#
+# CONFIG_DISPLAY_SUPPORT is not set
+# CONFIG_SOUND is not set
+# CONFIG_USB_SUPPORT is not set
+# CONFIG_MMC is not set
+# CONFIG_MEMSTICK is not set
+# CONFIG_NEW_LEDS is not set
+# CONFIG_ACCESSIBILITY is not set
+# CONFIG_RTC_CLASS is not set
+# CONFIG_DMADEVICES is not set
+# CONFIG_UIO is not set
+# CONFIG_STAGING is not set
+
+#
+# File systems
+#
+# CONFIG_EXT2_FS is not set
+# CONFIG_EXT3_FS is not set
+# CONFIG_EXT4_FS is not set
+# CONFIG_REISERFS_FS is not set
+# CONFIG_JFS_FS is not set
+# CONFIG_FS_POSIX_ACL is not set
+CONFIG_FILE_LOCKING=y
+# CONFIG_XFS_FS is not set
+# CONFIG_OCFS2_FS is not set
+# CONFIG_BTRFS_FS is not set
+# CONFIG_DNOTIFY is not set
+# CONFIG_INOTIFY is not set
+# CONFIG_QUOTA is not set
+# CONFIG_AUTOFS_FS is not set
+# CONFIG_AUTOFS4_FS is not set
+# CONFIG_FUSE_FS is not set
+
+#
+# CD-ROM/DVD Filesystems
+#
+# CONFIG_ISO9660_FS is not set
+# CONFIG_UDF_FS is not set
+
+#
+# DOS/FAT/NT Filesystems
+#
+# CONFIG_MSDOS_FS is not set
+# CONFIG_VFAT_FS is not set
+# CONFIG_NTFS_FS is not set
+
+#
+# Pseudo filesystems
+#
+CONFIG_PROC_FS=y
+CONFIG_PROC_SYSCTL=y
+CONFIG_SYSFS=y
+# CONFIG_TMPFS is not set
+# CONFIG_HUGETLB_PAGE is not set
+# CONFIG_CONFIGFS_FS is not set
+# CONFIG_MISC_FILESYSTEMS is not set
+# CONFIG_NETWORK_FILESYSTEMS is not set
+
+#
+# Partition Types
+#
+# CONFIG_PARTITION_ADVANCED is not set
+CONFIG_MSDOS_PARTITION=y
+# CONFIG_NLS is not set
+# CONFIG_DLM is not set
+
+#
+# Xtensa initrd options
+#
+# CONFIG_EMBEDDED_RAMDISK is not set
+
+#
+# Kernel hacking
+#
+CONFIG_PRINTK_TIME=y
+# CONFIG_ENABLE_WARN_DEPRECATED is not set
+# CONFIG_ENABLE_MUST_CHECK is not set
+CONFIG_FRAME_WARN=1024
+# CONFIG_MAGIC_SYSRQ is not set
+# CONFIG_UNUSED_SYMBOLS is not set
+# CONFIG_DEBUG_FS is not set
+# CONFIG_HEADERS_CHECK is not set
+CONFIG_DEBUG_KERNEL=y
+CONFIG_DEBUG_SHIRQ=y
+CONFIG_DETECT_SOFTLOCKUP=y
+# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
+CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=0
+# CONFIG_SCHED_DEBUG is not set
+# CONFIG_SCHEDSTATS is not set
+# CONFIG_TIMER_STATS is not set
+# CONFIG_DEBUG_OBJECTS is not set
+# CONFIG_DEBUG_SLAB is not set
+# CONFIG_DEBUG_RT_MUTEXES is not set
+# CONFIG_RT_MUTEX_TESTER is not set
+CONFIG_DEBUG_SPINLOCK=y
+CONFIG_DEBUG_MUTEXES=y
+CONFIG_DEBUG_SPINLOCK_SLEEP=y
+# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
+# CONFIG_DEBUG_KOBJECT is not set
+# CONFIG_DEBUG_INFO is not set
+# CONFIG_DEBUG_VM is not set
+CONFIG_DEBUG_NOMMU_REGIONS=y
+# CONFIG_DEBUG_WRITECOUNT is not set
+# CONFIG_DEBUG_MEMORY_INIT is not set
+# CONFIG_DEBUG_LIST is not set
+# CONFIG_DEBUG_SG is not set
+# CONFIG_DEBUG_NOTIFIERS is not set
+# CONFIG_BOOT_PRINTK_DELAY is not set
+# CONFIG_RCU_TORTURE_TEST is not set
+# CONFIG_BACKTRACE_SELF_TEST is not set
+# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
+# CONFIG_FAULT_INJECTION is not set
+# CONFIG_SYSCTL_SYSCALL_CHECK is not set
+
+#
+# Tracers
+#
+# CONFIG_PREEMPT_TRACER is not set
+# CONFIG_SCHED_TRACER is not set
+# CONFIG_CONTEXT_SWITCH_TRACER is not set
+# CONFIG_BOOT_TRACER is not set
+# CONFIG_TRACE_BRANCH_PROFILING is not set
+# CONFIG_DYNAMIC_PRINTK_DEBUG is not set
+# CONFIG_SAMPLES is not set
+
+#
+# Security options
+#
+# CONFIG_KEYS is not set
+# CONFIG_SECURITY is not set
+# CONFIG_SECURITYFS is not set
+# CONFIG_SECURITY_FILE_CAPABILITIES is not set
+# CONFIG_CRYPTO is not set
+
+#
+# Library routines
+#
+CONFIG_GENERIC_FIND_LAST_BIT=y
+# CONFIG_CRC_CCITT is not set
+# CONFIG_CRC16 is not set
+# CONFIG_CRC_T10DIF is not set
+# CONFIG_CRC_ITU_T is not set
+# CONFIG_CRC32 is not set
+# CONFIG_CRC7 is not set
+# CONFIG_LIBCRC32C is not set
+CONFIG_PLIST=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_DMA=y
diff --git a/arch/xtensa/include/asm/cacheflush.h b/arch/xtensa/include/asm/cacheflush.h
index 94c4c53a099e..8fc1c0c8de07 100644
--- a/arch/xtensa/include/asm/cacheflush.h
+++ b/arch/xtensa/include/asm/cacheflush.h
@@ -65,13 +65,17 @@ extern void __flush_invalidate_dcache_range(unsigned long, unsigned long);
# define __flush_invalidate_dcache_range(p,s) __invalidate_dcache_range(p,s)
#endif
-#if (DCACHE_WAY_SIZE > PAGE_SIZE)
+#if defined(CONFIG_MMU) && (DCACHE_WAY_SIZE > PAGE_SIZE)
extern void __flush_invalidate_dcache_page_alias(unsigned long, unsigned long);
+#else
+static inline void __flush_invalidate_dcache_page_alias(unsigned long virt,
+ unsigned long phys) { }
#endif
-#if (ICACHE_WAY_SIZE > PAGE_SIZE)
+#if defined(CONFIG_MMU) && (ICACHE_WAY_SIZE > PAGE_SIZE)
extern void __invalidate_icache_page_alias(unsigned long, unsigned long);
#else
-# define __invalidate_icache_page_alias(v,p) do { } while(0)
+static inline void __invalidate_icache_page_alias(unsigned long virt,
+ unsigned long phys) { }
#endif
/*
diff --git a/arch/xtensa/include/asm/dma.h b/arch/xtensa/include/asm/dma.h
index e30f3abf48f0..137ca3945b07 100644
--- a/arch/xtensa/include/asm/dma.h
+++ b/arch/xtensa/include/asm/dma.h
@@ -44,8 +44,9 @@
* the value desired).
*/
+#ifndef MAX_DMA_ADDRESS
#define MAX_DMA_ADDRESS (PAGE_OFFSET + XCHAL_KIO_SIZE - 1)
-
+#endif
/* Reserve and release a DMA channel */
extern int request_dma(unsigned int dmanr, const char * device_id);
diff --git a/arch/xtensa/include/asm/flat.h b/arch/xtensa/include/asm/flat.h
new file mode 100644
index 000000000000..94c44abf15e4
--- /dev/null
+++ b/arch/xtensa/include/asm/flat.h
@@ -0,0 +1,12 @@
+#ifndef __ASM_XTENSA_FLAT_H
+#define __ASM_XTENSA_FLAT_H
+
+#define flat_argvp_envp_on_stack() 0
+#define flat_old_ram_flag(flags) (flags)
+#define flat_reloc_valid(reloc, size) ((reloc) <= (size))
+#define flat_get_addr_from_rp(rp, relval, flags, p) get_unaligned(rp)
+#define flat_put_addr_at_rp(rp, val, relval ) put_unaligned(val, rp)
+#define flat_get_relocate_addr(rel) (rel)
+#define flat_set_persistent(relval, p) 0
+
+#endif /* __ASM_XTENSA_FLAT_H */
diff --git a/arch/xtensa/include/asm/gpio.h b/arch/xtensa/include/asm/gpio.h
new file mode 100644
index 000000000000..0763b0763960
--- /dev/null
+++ b/arch/xtensa/include/asm/gpio.h
@@ -0,0 +1,56 @@
+/*
+ * Generic GPIO API implementation for xtensa.
+ *
+ * Stolen from x86, which is derived from the generic GPIO API for powerpc:
+ *
+ * Copyright (c) 2007-2008 MontaVista Software, Inc.
+ *
+ * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef _ASM_XTENSA_GPIO_H
+#define _ASM_XTENSA_GPIO_H
+
+#include <asm-generic/gpio.h>
+
+#ifdef CONFIG_GPIOLIB
+
+/*
+ * Just call gpiolib.
+ */
+static inline int gpio_get_value(unsigned int gpio)
+{
+ return __gpio_get_value(gpio);
+}
+
+static inline void gpio_set_value(unsigned int gpio, int value)
+{
+ __gpio_set_value(gpio, value);
+}
+
+static inline int gpio_cansleep(unsigned int gpio)
+{
+ return __gpio_cansleep(gpio);
+}
+
+/*
+ * Not implemented, yet.
+ */
+static inline int gpio_to_irq(unsigned int gpio)
+{
+ return -ENOSYS;
+}
+
+static inline int irq_to_gpio(unsigned int irq)
+{
+ return -EINVAL;
+}
+
+#endif /* CONFIG_GPIOLIB */
+
+#endif /* _ASM_XTENSA_GPIO_H */
diff --git a/arch/xtensa/include/asm/io.h b/arch/xtensa/include/asm/io.h
index 07b7299dab20..d04cd3a625fa 100644
--- a/arch/xtensa/include/asm/io.h
+++ b/arch/xtensa/include/asm/io.h
@@ -69,21 +69,28 @@ static inline void * phys_to_virt(unsigned long address)
static inline void *ioremap(unsigned long offset, unsigned long size)
{
+#ifdef CONFIG_MMU
if (offset >= XCHAL_KIO_PADDR
&& offset < XCHAL_KIO_PADDR + XCHAL_KIO_SIZE)
return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_BYPASS_VADDR);
-
else
BUG();
+#else
+ return (void *)offset;
+#endif
}
static inline void *ioremap_nocache(unsigned long offset, unsigned long size)
{
+#ifdef CONFIG_MMU
if (offset >= XCHAL_KIO_PADDR
&& offset < XCHAL_KIO_PADDR + XCHAL_KIO_SIZE)
return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_CACHED_VADDR);
else
BUG();
+#else
+ return (void *)offset;
+#endif
}
static inline void iounmap(void *addr)
diff --git a/arch/xtensa/include/asm/irq.h b/arch/xtensa/include/asm/irq.h
index 1620d1e0e695..dfac82dc52ad 100644
--- a/arch/xtensa/include/asm/irq.h
+++ b/arch/xtensa/include/asm/irq.h
@@ -14,6 +14,13 @@
#include <platform/hardware.h>
#include <variant/core.h>
+#ifdef CONFIG_VARIANT_IRQ_SWITCH
+#include <variant/irq.h>
+#else
+static inline void variant_irq_enable(unsigned int irq) { }
+static inline void variant_irq_disable(unsigned int irq) { }
+#endif
+
#ifndef PLATFORM_NR_IRQS
# define PLATFORM_NR_IRQS 0
#endif
diff --git a/arch/xtensa/include/asm/mmu.h b/arch/xtensa/include/asm/mmu.h
index 44c5bb04c55c..04890d6e2335 100644
--- a/arch/xtensa/include/asm/mmu.h
+++ b/arch/xtensa/include/asm/mmu.h
@@ -11,7 +11,12 @@
#ifndef _XTENSA_MMU_H
#define _XTENSA_MMU_H
+#ifndef CONFIG_MMU
+#include <asm/nommu.h>
+#else
+
/* Default "unsigned long" context */
typedef unsigned long mm_context_t;
+#endif /* CONFIG_MMU */
#endif /* _XTENSA_MMU_H */
diff --git a/arch/xtensa/include/asm/mmu_context.h b/arch/xtensa/include/asm/mmu_context.h
index c0fd8e5b4513..dbd8731a876a 100644
--- a/arch/xtensa/include/asm/mmu_context.h
+++ b/arch/xtensa/include/asm/mmu_context.h
@@ -13,16 +13,20 @@
#ifndef _XTENSA_MMU_CONTEXT_H
#define _XTENSA_MMU_CONTEXT_H
+#ifndef CONFIG_MMU
+#include <asm/nommu_context.h>
+#else
+
#include <linux/stringify.h>
#include <linux/sched.h>
+#include <variant/core.h>
+
#include <asm/pgtable.h>
#include <asm/cacheflush.h>
#include <asm/tlbflush.h>
#include <asm-generic/mm_hooks.h>
-#define XCHAL_MMU_ASID_BITS 8
-
#if (XCHAL_HAVE_TLBS != 1)
# error "Linux must have an MMU!"
#endif
@@ -133,4 +137,5 @@ static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
}
+#endif /* CONFIG_MMU */
#endif /* _XTENSA_MMU_CONTEXT_H */
diff --git a/arch/xtensa/include/asm/nommu.h b/arch/xtensa/include/asm/nommu.h
new file mode 100644
index 000000000000..dce2c438c5ba
--- /dev/null
+++ b/arch/xtensa/include/asm/nommu.h
@@ -0,0 +1,3 @@
+typedef struct {
+ unsigned long end_brk;
+} mm_context_t;
diff --git a/arch/xtensa/include/asm/nommu_context.h b/arch/xtensa/include/asm/nommu_context.h
new file mode 100644
index 000000000000..599e7a2e729d
--- /dev/null
+++ b/arch/xtensa/include/asm/nommu_context.h
@@ -0,0 +1,25 @@
+static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
+{
+}
+
+static inline int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
+{
+ return 0;
+}
+
+static inline void destroy_context(struct mm_struct *mm)
+{
+}
+
+static inline void activate_mm(struct mm_struct *prev, struct mm_struct *next)
+{
+}
+
+static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
+ struct task_struct *tsk)
+{
+}
+
+static inline void deactivate_mm(struct task_struct *tsk, struct mm_struct *mm)
+{
+}
diff --git a/arch/xtensa/include/asm/page.h b/arch/xtensa/include/asm/page.h
index 11f7dc2dbec7..17e0c5383b10 100644
--- a/arch/xtensa/include/asm/page.h
+++ b/arch/xtensa/include/asm/page.h
@@ -14,6 +14,7 @@
#include <asm/processor.h>
#include <asm/types.h>
#include <asm/cache.h>
+#include <platform/hardware.h>
/*
* Fixed TLB translations in the processor.
@@ -32,8 +33,14 @@
#define PAGE_SIZE (__XTENSA_UL_CONST(1) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))
+#ifdef CONFIG_MMU
#define PAGE_OFFSET XCHAL_KSEG_CACHED_VADDR
#define MAX_MEM_PFN XCHAL_KSEG_SIZE
+#else
+#define PAGE_OFFSET 0
+#define MAX_MEM_PFN (PLATFORM_DEFAULT_MEM_START + PLATFORM_DEFAULT_MEM_SIZE)
+#endif
+
#define PGTABLE_START 0x80000000
/*
@@ -150,9 +157,11 @@ extern void copy_user_page(void*, void*, unsigned long, struct page*);
* addresses.
*/
+#define ARCH_PFN_OFFSET (PLATFORM_DEFAULT_MEM_START >> PAGE_SHIFT)
+
#define __pa(x) ((unsigned long) (x) - PAGE_OFFSET)
#define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET))
-#define pfn_valid(pfn) ((unsigned long)pfn < max_mapnr)
+#define pfn_valid(pfn) ((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr)
#ifdef CONFIG_DISCONTIGMEM
# error CONFIG_DISCONTIGMEM not supported
#endif
@@ -162,8 +171,9 @@ extern void copy_user_page(void*, void*, unsigned long, struct page*);
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
+#ifdef CONFIG_MMU
#define WANT_PAGE_VIRTUAL
-
+#endif
#endif /* __ASSEMBLY__ */
diff --git a/arch/xtensa/include/asm/pgtable.h b/arch/xtensa/include/asm/pgtable.h
index 8014d96b21f1..a138770c358e 100644
--- a/arch/xtensa/include/asm/pgtable.h
+++ b/arch/xtensa/include/asm/pgtable.h
@@ -183,7 +183,15 @@ extern unsigned long empty_zero_page[1024];
#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
+#ifdef CONFIG_MMU
extern pgd_t swapper_pg_dir[PAGE_SIZE/sizeof(pgd_t)];
+extern void paging_init(void);
+extern void pgtable_cache_init(void);
+#else
+# define swapper_pg_dir NULL
+static inline void paging_init(void) { }
+static inline void pgtable_cache_init(void) { }
+#endif
/*
* The pmd contains the kernel virtual address of the pte page.
@@ -383,8 +391,6 @@ ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
#else
-extern void paging_init(void);
-
#define kern_addr_valid(addr) (1)
extern void update_mmu_cache(struct vm_area_struct * vma,
@@ -398,9 +404,6 @@ extern void update_mmu_cache(struct vm_area_struct * vma,
#define io_remap_pfn_range(vma,from,pfn,size,prot) \
remap_pfn_range(vma, from, pfn, size, prot)
-
-extern void pgtable_cache_init(void);
-
typedef pte_t *pte_addr_t;
#endif /* !defined (__ASSEMBLY__) */
diff --git a/arch/xtensa/include/asm/platform.h b/arch/xtensa/include/asm/platform.h
index e3d5a48ad495..7d936e58e9be 100644
--- a/arch/xtensa/include/asm/platform.h
+++ b/arch/xtensa/include/asm/platform.h
@@ -74,16 +74,5 @@ extern int platform_pcibios_fixup (void);
*/
extern void platform_calibrate_ccount (void);
-/*
- * platform_get_rtc_time returns RTC seconds (returns 0 for no error)
- */
-extern int platform_get_rtc_time(time_t*);
-
-/*
- * platform_set_rtc_time set RTC seconds (returns 0 for no error)
- */
-extern int platform_set_rtc_time(time_t);
-
-
#endif /* _XTENSA_PLATFORM_H */
diff --git a/arch/xtensa/include/asm/processor.h b/arch/xtensa/include/asm/processor.h
index 07387d3b99f4..0ea4937c0b61 100644
--- a/arch/xtensa/include/asm/processor.h
+++ b/arch/xtensa/include/asm/processor.h
@@ -13,6 +13,7 @@
#include <variant/core.h>
#include <asm/coprocessor.h>
+#include <platform/hardware.h>
#include <linux/compiler.h>
#include <asm/ptrace.h>
@@ -25,6 +26,8 @@
# error Linux requires the Xtensa Windowed Registers Option.
#endif
+#define ARCH_SLAB_MINALIGN XCHAL_DATA_WIDTH
+
/*
* User space process size: 1 GB.
* Windowed call ABI requires caller and callee to be located within the same
@@ -33,7 +36,12 @@
* the 1 GB requirement applies to the stack as well.
*/
+#ifdef CONFIG_MMU
#define TASK_SIZE __XTENSA_UL_CONST(0x40000000)
+#else
+#define TASK_SIZE (PLATFORM_DEFAULT_MEM_START + PLATFORM_DEFAULT_MEM_SIZE)
+#endif
+
#define STACK_TOP TASK_SIZE
#define STACK_TOP_MAX STACK_TOP
diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S
index a51d36a27389..80d24c485fd3 100644
--- a/arch/xtensa/kernel/entry.S
+++ b/arch/xtensa/kernel/entry.S
@@ -1463,6 +1463,7 @@ ENTRY(_spill_registers)
callx0 a0 # should not return
1: j 1b
+#ifdef CONFIG_MMU
/*
* We should never get here. Bail out!
*/
@@ -1775,7 +1776,7 @@ ENTRY(fast_store_prohibited)
bbsi.l a2, PS_UM_BIT, 1f
j _kernel_exception
1: j _user_exception
-
+#endif /* CONFIG_MMU */
/*
* System Calls.
diff --git a/arch/xtensa/kernel/head.S b/arch/xtensa/kernel/head.S
index 67e69139520b..0817f9db836e 100644
--- a/arch/xtensa/kernel/head.S
+++ b/arch/xtensa/kernel/head.S
@@ -53,7 +53,7 @@ _start: _j 2f
2: l32r a0, 1b
jx a0
- .text
+ .section .init.text, "ax"
.align 4
_startup:
@@ -235,8 +235,9 @@ should_never_return:
*/
.section ".bss.page_aligned", "w"
+#ifdef CONFIG_MMU
ENTRY(swapper_pg_dir)
.fill PAGE_SIZE, 1, 0
+#endif
ENTRY(empty_zero_page)
.fill PAGE_SIZE, 1, 0
-
diff --git a/arch/xtensa/kernel/irq.c b/arch/xtensa/kernel/irq.c
index f3b66fba5b8f..a36c85edd045 100644
--- a/arch/xtensa/kernel/irq.c
+++ b/arch/xtensa/kernel/irq.c
@@ -132,6 +132,18 @@ static void xtensa_irq_unmask(unsigned int irq)
set_sr (cached_irq_mask, INTENABLE);
}
+static void xtensa_irq_enable(unsigned int irq)
+{
+ variant_irq_enable(irq);
+ xtensa_irq_unmask(irq);
+}
+
+static void xtensa_irq_disable(unsigned int irq)
+{
+ xtensa_irq_mask(irq);
+ variant_irq_disable(irq);
+}
+
static void xtensa_irq_ack(unsigned int irq)
{
set_sr(1 << irq, INTCLEAR);
@@ -146,6 +158,8 @@ static int xtensa_irq_retrigger(unsigned int irq)
static struct irq_chip xtensa_irq_chip = {
.name = "xtensa",
+ .enable = xtensa_irq_enable,
+ .disable = xtensa_irq_disable,
.mask = xtensa_irq_mask,
.unmask = xtensa_irq_unmask,
.ack = xtensa_irq_ack,
diff --git a/arch/xtensa/kernel/platform.c b/arch/xtensa/kernel/platform.c
index 69675f216062..1b91a97f1d84 100644
--- a/arch/xtensa/kernel/platform.c
+++ b/arch/xtensa/kernel/platform.c
@@ -36,8 +36,6 @@ _F(void, power_off, (void), { while(1); });
_F(void, idle, (void), { __asm__ __volatile__ ("waiti 0" ::: "memory"); });
_F(void, heartbeat, (void), { });
_F(int, pcibios_fixup, (void), { return 0; });
-_F(int, get_rtc_time, (time_t* t), { return 0; });
-_F(int, set_rtc_time, (time_t t), { return 0; });
#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
_F(void, calibrate_ccount, (void),
diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index 4ec1633c2941..1e5a034fe011 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -84,7 +84,13 @@ sysmem_info_t __initdata sysmem;
int initrd_is_mapped;
#endif
+#ifdef CONFIG_MMU
extern void init_mmu(void);
+#else
+static inline void init_mmu(void) { }
+#endif
+
+extern void zones_init(void);
/*
* Boot parameter parsing.
@@ -286,6 +292,7 @@ void __init setup_arch(char **cmdline_p)
paging_init();
+ zones_init();
#ifdef CONFIG_VT
# if defined(CONFIG_VGA_CONSOLE)
diff --git a/arch/xtensa/kernel/time.c b/arch/xtensa/kernel/time.c
index 8df1e842f6d4..8848120d291b 100644
--- a/arch/xtensa/kernel/time.c
+++ b/arch/xtensa/kernel/time.c
@@ -14,7 +14,7 @@
#include <linux/errno.h>
#include <linux/time.h>
-#include <linux/timex.h>
+#include <linux/clocksource.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/init.h>
@@ -25,27 +25,31 @@
#include <asm/timex.h>
#include <asm/platform.h>
-
-DEFINE_SPINLOCK(rtc_lock);
-EXPORT_SYMBOL(rtc_lock);
-
-
#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
unsigned long ccount_per_jiffy; /* per 1/HZ */
unsigned long nsec_per_ccount; /* nsec per ccount increment */
#endif
-static long last_rtc_update = 0;
-
-/*
- * Scheduler clock - returns current tim in nanosec units.
- */
-
-unsigned long long sched_clock(void)
+static cycle_t ccount_read(void)
{
- return (unsigned long long)jiffies * (1000000000 / HZ);
+ return (cycle_t)get_ccount();
}
+static struct clocksource ccount_clocksource = {
+ .name = "ccount",
+ .rating = 200,
+ .read = ccount_read,
+ .mask = CLOCKSOURCE_MASK(32),
+ /*
+ * With a shift of 22 the lower limit of the cpu clock is
+ * 1MHz, where NSEC_PER_CCOUNT is 1000 or a bit less than
+ * 2^10: Since we have 32 bits and the multiplicator can
+ * already take up as much as 10 bits, this leaves us with
+ * remaining upper 22 bits.
+ */
+ .shift = 22,
+};
+
static irqreturn_t timer_interrupt(int irq, void *dev_id);
static struct irqaction timer_irqaction = {
.handler = timer_interrupt,
@@ -55,11 +59,11 @@ static struct irqaction timer_irqaction = {
void __init time_init(void)
{
- time_t sec_o, sec_n = 0;
+ xtime.tv_nsec = 0;
+ xtime.tv_sec = read_persistent_clock();
- /* The platform must provide a function to calibrate the processor
- * speed for the CALIBRATE.
- */
+ set_normalized_timespec(&wall_to_monotonic,
+ -xtime.tv_sec, -xtime.tv_nsec);
#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
printk("Calibrating CPU frequency ");
@@ -67,19 +71,10 @@ void __init time_init(void)
printk("%d.%02d MHz\n", (int)ccount_per_jiffy/(1000000/HZ),
(int)(ccount_per_jiffy/(10000/HZ))%100);
#endif
-
- /* Set time from RTC (if provided) */
-
- if (platform_get_rtc_time(&sec_o) == 0)
- while (platform_get_rtc_time(&sec_n))
- if (sec_o != sec_n)
- break;
-
- xtime.tv_nsec = 0;
- last_rtc_update = xtime.tv_sec = sec_n;
-
- set_normalized_timespec(&wall_to_monotonic,
- -xtime.tv_sec, -xtime.tv_nsec);
+ ccount_clocksource.mult =
+ clocksource_hz2mult(CCOUNT_PER_JIFFY * HZ,
+ ccount_clocksource.shift);
+ clocksource_register(&ccount_clocksource);
/* Initialize the linux timer interrupt. */
@@ -87,69 +82,6 @@ void __init time_init(void)
set_linux_timer(get_ccount() + CCOUNT_PER_JIFFY);
}
-
-int do_settimeofday(struct timespec *tv)
-{
- time_t wtm_sec, sec = tv->tv_sec;
- long wtm_nsec, nsec = tv->tv_nsec;
- unsigned long delta;
-
- if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC)
- return -EINVAL;
-
- write_seqlock_irq(&xtime_lock);
-
- /* This is revolting. We need to set "xtime" correctly. However, the
- * value in this location is the value at the most recent update of
- * wall time. Discover what correction gettimeofday() would have
- * made, and then undo it!
- */
-
- delta = CCOUNT_PER_JIFFY;
- delta += get_ccount() - get_linux_timer();
- nsec -= delta * NSEC_PER_CCOUNT;
-
- wtm_sec = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec);
- wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - nsec);
-
- set_normalized_timespec(&xtime, sec, nsec);
- set_normalized_timespec(&wall_to_monotonic, wtm_sec, wtm_nsec);
-
- ntp_clear();
- write_sequnlock_irq(&xtime_lock);
- return 0;
-}
-
-EXPORT_SYMBOL(do_settimeofday);
-
-
-void do_gettimeofday(struct timeval *tv)
-{
- unsigned long flags;
- unsigned long volatile sec, usec, delta, seq;
-
- do {
- seq = read_seqbegin_irqsave(&xtime_lock, flags);
-
- sec = xtime.tv_sec;
- usec = (xtime.tv_nsec / NSEC_PER_USEC);
-
- delta = get_linux_timer() - get_ccount();
-
- } while (read_seqretry_irqrestore(&xtime_lock, seq, flags));
-
- usec += (((unsigned long) CCOUNT_PER_JIFFY - delta)
- * (unsigned long) NSEC_PER_CCOUNT) / NSEC_PER_USEC;
-
- for (; usec >= 1000000; sec++, usec -= 1000000)
- ;
-
- tv->tv_sec = sec;
- tv->tv_usec = usec;
-}
-
-EXPORT_SYMBOL(do_gettimeofday);
-
/*
* The timer interrupt is called HZ times per second.
*/
@@ -178,16 +110,6 @@ again:
next += CCOUNT_PER_JIFFY;
set_linux_timer(next);
- if (ntp_synced() &&
- xtime.tv_sec - last_rtc_update >= 659 &&
- abs((xtime.tv_nsec/1000)-(1000000-1000000/HZ))<5000000/HZ) {
-
- if (platform_set_rtc_time(xtime.tv_sec+1) == 0)
- last_rtc_update = xtime.tv_sec+1;
- else
- /* Do it again in 60 s */
- last_rtc_update += 60;
- }
write_sequnlock(&xtime_lock);
}
@@ -213,4 +135,3 @@ void __cpuinit calibrate_delay(void)
(loops_per_jiffy/(10000/HZ)) % 100);
}
#endif
-
diff --git a/arch/xtensa/kernel/traps.c b/arch/xtensa/kernel/traps.c
index c44f830b6c7a..9f0b71189e94 100644
--- a/arch/xtensa/kernel/traps.c
+++ b/arch/xtensa/kernel/traps.c
@@ -104,6 +104,7 @@ static dispatch_init_table_t __initdata dispatch_init_table[] = {
#endif
{ EXCCAUSE_UNALIGNED, KRNL, fast_unaligned },
#endif
+#ifdef CONFIG_MMU
{ EXCCAUSE_ITLB_MISS, 0, do_page_fault },
{ EXCCAUSE_ITLB_MISS, USER|KRNL, fast_second_level_miss},
{ EXCCAUSE_ITLB_MULTIHIT, 0, do_multihit },
@@ -118,6 +119,7 @@ static dispatch_init_table_t __initdata dispatch_init_table[] = {
{ EXCCAUSE_STORE_CACHE_ATTRIBUTE, USER|KRNL, fast_store_prohibited },
{ EXCCAUSE_STORE_CACHE_ATTRIBUTE, 0, do_page_fault },
{ EXCCAUSE_LOAD_CACHE_ATTRIBUTE, 0, do_page_fault },
+#endif /* CONFIG_MMU */
/* XCCHAL_EXCCAUSE_FLOATING_POINT unhandled */
#if XTENSA_HAVE_COPROCESSOR(0)
COPROCESSOR(0),
@@ -372,11 +374,10 @@ void show_trace(struct task_struct *task, unsigned long *sp)
unsigned long a0, a1, pc;
unsigned long sp_start, sp_end;
- a1 = (unsigned long)sp;
-
- if (a1 == 0)
- __asm__ __volatile__ ("mov %0, a1\n" : "=a"(a1));
-
+ if (sp)
+ a1 = (unsigned long)sp;
+ else
+ a1 = task->thread.sp;
sp_start = a1 & ~(THREAD_SIZE-1);
sp_end = sp_start + THREAD_SIZE;
@@ -418,9 +419,8 @@ void show_stack(struct task_struct *task, unsigned long *sp)
int i = 0;
unsigned long *stack;
- if (sp == 0)
- __asm__ __volatile__ ("mov %0, a1\n" : "=a"(sp));
-
+ if (!sp)
+ sp = (unsigned long *)task->thread.sp;
stack = sp;
printk("\nStack: ");
diff --git a/arch/xtensa/kernel/vectors.S b/arch/xtensa/kernel/vectors.S
index eb2d7bb69ee0..74a7518faf16 100644
--- a/arch/xtensa/kernel/vectors.S
+++ b/arch/xtensa/kernel/vectors.S
@@ -309,6 +309,7 @@ ENTRY(_DoubleExceptionVector)
* All other exceptions are unexpected and thus unrecoverable!
*/
+#ifdef CONFIG_MMU
.extern fast_second_level_miss_double_kernel
.Lksp: /* a0: a0, a1: a1, a2: a2, a3: trashed, depc: depc, excsave: a3 */
@@ -319,6 +320,9 @@ ENTRY(_DoubleExceptionVector)
bnez a3, .Lunrecoverable
1: movi a3, fast_second_level_miss_double_kernel
jx a3
+#else
+.equ .Lksp, .Lunrecoverable
+#endif
/* Critical! We can't handle this situation. PANIC! */
diff --git a/arch/xtensa/kernel/vmlinux.lds.S b/arch/xtensa/kernel/vmlinux.lds.S
index d506774f4b05..c1be9a4a740c 100644
--- a/arch/xtensa/kernel/vmlinux.lds.S
+++ b/arch/xtensa/kernel/vmlinux.lds.S
@@ -17,6 +17,7 @@
#include <asm-generic/vmlinux.lds.h>
#include <variant/core.h>
+#include <platform/hardware.h>
OUTPUT_ARCH(xtensa)
ENTRY(_start)
@@ -26,7 +27,9 @@ jiffies = jiffies_64 + 4;
jiffies = jiffies_64;
#endif
+#ifndef KERNELOFFSET
#define KERNELOFFSET 0xd0001000
+#endif
/* Note: In the following macros, it would be nice to specify only the
vector name and section kind and construct "sym" and "section" using
diff --git a/arch/xtensa/mm/Makefile b/arch/xtensa/mm/Makefile
index 64e304a2f884..f0b646d2f843 100644
--- a/arch/xtensa/mm/Makefile
+++ b/arch/xtensa/mm/Makefile
@@ -2,4 +2,5 @@
# Makefile for the Linux/Xtensa-specific parts of the memory manager.
#
-obj-y := init.o fault.o tlb.o misc.o cache.o
+obj-y := init.o cache.o misc.o
+obj-$(CONFIG_MMU) += fault.o mmu.o tlb.o
diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c
index 34163cfaaffc..427e14fa43c5 100644
--- a/arch/xtensa/mm/init.c
+++ b/arch/xtensa/mm/init.c
@@ -24,15 +24,8 @@
#include <linux/mm.h>
#include <linux/slab.h>
-#include <asm/pgtable.h>
#include <asm/bootparam.h>
-#include <asm/mmu_context.h>
-#include <asm/tlb.h>
#include <asm/page.h>
-#include <asm/pgalloc.h>
-
-
-DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
/* References to section boundaries */
@@ -130,7 +123,8 @@ void __init bootmem_init(void)
/* Find an area to use for the bootmem bitmap. */
- bootmap_size = bootmem_bootmap_pages(max_low_pfn) << PAGE_SHIFT;
+ bootmap_size = bootmem_bootmap_pages(max_low_pfn - min_low_pfn);
+ bootmap_size <<= PAGE_SHIFT;
bootmap_start = ~0;
for (i=0; i<sysmem.nr_banks; i++)
@@ -145,8 +139,9 @@ void __init bootmem_init(void)
/* Reserve the bootmem bitmap area */
mem_reserve(bootmap_start, bootmap_start + bootmap_size, 1);
- bootmap_size = init_bootmem_node(NODE_DATA(0), min_low_pfn,
+ bootmap_size = init_bootmem_node(NODE_DATA(0),
bootmap_start >> PAGE_SHIFT,
+ min_low_pfn,
max_low_pfn);
/* Add all remaining memory pieces into the bootmem map */
@@ -158,14 +153,14 @@ void __init bootmem_init(void)
}
-void __init paging_init(void)
+void __init zones_init(void)
{
unsigned long zones_size[MAX_NR_ZONES];
int i;
/* All pages are DMA-able, so we put them all in the DMA zone. */
- zones_size[ZONE_DMA] = max_low_pfn;
+ zones_size[ZONE_DMA] = max_low_pfn - ARCH_PFN_OFFSET;
for (i = 1; i < MAX_NR_ZONES; i++)
zones_size[i] = 0;
@@ -173,40 +168,7 @@ void __init paging_init(void)
zones_size[ZONE_HIGHMEM] = max_pfn - max_low_pfn;
#endif
- /* Initialize the kernel's page tables. */
-
- memset(swapper_pg_dir, 0, PAGE_SIZE);
-
- free_area_init(zones_size);
-}
-
-/*
- * Flush the mmu and reset associated register to default values.
- */
-
-void __init init_mmu (void)
-{
- /* Writing zeros to the <t>TLBCFG special registers ensure
- * that valid values exist in the register. For existing
- * PGSZID<w> fields, zero selects the first element of the
- * page-size array. For nonexistent PGSZID<w> fields, zero is
- * the best value to write. Also, when changing PGSZID<w>
- * fields, the corresponding TLB must be flushed.
- */
- set_itlbcfg_register (0);
- set_dtlbcfg_register (0);
- flush_tlb_all ();
-
- /* Set rasid register to a known value. */
-
- set_rasid_register (ASID_USER_FIRST);
-
- /* Set PTEVADDR special register to the start of the page
- * table, which is in kernel mappable space (ie. not
- * statically mapped). This register's value is undefined on
- * reset.
- */
- set_ptevaddr_register (PGTABLE_START);
+ free_area_init_node(0, zones_size, ARCH_PFN_OFFSET, NULL);
}
/*
@@ -218,8 +180,8 @@ void __init mem_init(void)
unsigned long codesize, reservedpages, datasize, initsize;
unsigned long highmemsize, tmp, ram;
- max_mapnr = num_physpages = max_low_pfn;
- high_memory = (void *) __va(max_mapnr << PAGE_SHIFT);
+ max_mapnr = num_physpages = max_low_pfn - ARCH_PFN_OFFSET;
+ high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT);
highmemsize = 0;
#ifdef CONFIG_HIGHMEM
@@ -229,7 +191,7 @@ void __init mem_init(void)
totalram_pages += free_all_bootmem();
reservedpages = ram = 0;
- for (tmp = 0; tmp < max_low_pfn; tmp++) {
+ for (tmp = 0; tmp < max_mapnr; tmp++) {
ram++;
if (PageReserved(mem_map+tmp))
reservedpages++;
@@ -279,23 +241,3 @@ void free_initmem(void)
printk("Freeing unused kernel memory: %dk freed\n",
(&__init_end - &__init_begin) >> 10);
}
-
-struct kmem_cache *pgtable_cache __read_mostly;
-
-static void pgd_ctor(void* addr)
-{
- pte_t* ptep = (pte_t*)addr;
- int i;
-
- for (i = 0; i < 1024; i++, ptep++)
- pte_clear(NULL, 0, ptep);
-
-}
-
-void __init pgtable_cache_init(void)
-{
- pgtable_cache = kmem_cache_create("pgd",
- PAGE_SIZE, PAGE_SIZE,
- SLAB_HWCACHE_ALIGN,
- pgd_ctor);
-}
diff --git a/arch/xtensa/mm/misc.S b/arch/xtensa/mm/misc.S
index c885664211d1..b048406d8756 100644
--- a/arch/xtensa/mm/misc.S
+++ b/arch/xtensa/mm/misc.S
@@ -84,6 +84,7 @@ ENTRY(copy_page)
retw
+#ifdef CONFIG_MMU
/*
* If we have to deal with cache aliasing, we use temporary memory mappings
* to ensure that the source and destination pages have the same color as
@@ -311,6 +312,7 @@ ENTRY(__invalidate_icache_page_alias)
/* End of special treatment in tlb miss exception */
ENTRY(__tlbtemp_mapping_end)
+#endif /* CONFIG_MMU
/*
* void __invalidate_icache_page(ulong start)
diff --git a/arch/xtensa/mm/mmu.c b/arch/xtensa/mm/mmu.c
new file mode 100644
index 000000000000..4bb91a970f1f
--- /dev/null
+++ b/arch/xtensa/mm/mmu.c
@@ -0,0 +1,70 @@
+/*
+ * xtensa mmu stuff
+ *
+ * Extracted from init.c
+ */
+#include <linux/percpu.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/cache.h>
+
+#include <asm/tlb.h>
+#include <asm/tlbflush.h>
+#include <asm/mmu_context.h>
+#include <asm/page.h>
+
+DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
+
+void __init paging_init(void)
+{
+ memset(swapper_pg_dir, 0, PAGE_SIZE);
+}
+
+/*
+ * Flush the mmu and reset associated register to default values.
+ */
+void __init init_mmu(void)
+{
+ /* Writing zeros to the <t>TLBCFG special registers ensure
+ * that valid values exist in the register. For existing
+ * PGSZID<w> fields, zero selects the first element of the
+ * page-size array. For nonexistent PGSZID<w> fields, zero is
+ * the best value to write. Also, when changing PGSZID<w>
+ * fields, the corresponding TLB must be flushed.
+ */
+ set_itlbcfg_register(0);
+ set_dtlbcfg_register(0);
+ flush_tlb_all();
+
+ /* Set rasid register to a known value. */
+
+ set_rasid_register(ASID_USER_FIRST);
+
+ /* Set PTEVADDR special register to the start of the page
+ * table, which is in kernel mappable space (ie. not
+ * statically mapped). This register's value is undefined on
+ * reset.
+ */
+ set_ptevaddr_register(PGTABLE_START);
+}
+
+struct kmem_cache *pgtable_cache __read_mostly;
+
+static void pgd_ctor(void *addr)
+{
+ pte_t *ptep = (pte_t *)addr;
+ int i;
+
+ for (i = 0; i < 1024; i++, ptep++)
+ pte_clear(NULL, 0, ptep);
+
+}
+
+void __init pgtable_cache_init(void)
+{
+ pgtable_cache = kmem_cache_create("pgd",
+ PAGE_SIZE, PAGE_SIZE,
+ SLAB_HWCACHE_ALIGN,
+ pgd_ctor);
+}
diff --git a/arch/xtensa/platforms/s6105/Makefile b/arch/xtensa/platforms/s6105/Makefile
new file mode 100644
index 000000000000..0be6194bcb72
--- /dev/null
+++ b/arch/xtensa/platforms/s6105/Makefile
@@ -0,0 +1,3 @@
+# Makefile for the Stretch S6105 eval board
+
+obj-y := setup.o device.o
diff --git a/arch/xtensa/platforms/s6105/device.c b/arch/xtensa/platforms/s6105/device.c
new file mode 100644
index 000000000000..78b08be5a92d
--- /dev/null
+++ b/arch/xtensa/platforms/s6105/device.c
@@ -0,0 +1,67 @@
+/*
+ * s6105 platform devices
+ *
+ * Copyright (c) 2009 emlix GmbH
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
+
+#include <variant/hardware.h>
+
+#define UART_INTNUM 4
+
+static const signed char uart_irq_mappings[] = {
+ S6_INTC_UART(0),
+ S6_INTC_UART(1),
+ -1,
+};
+
+const signed char *platform_irq_mappings[NR_IRQS] = {
+ [UART_INTNUM] = uart_irq_mappings,
+};
+
+static struct plat_serial8250_port serial_platform_data[] = {
+ {
+ .membase = (void *)S6_REG_UART + 0x0000,
+ .mapbase = S6_REG_UART + 0x0000,
+ .irq = UART_INTNUM,
+ .uartclk = S6_SCLK,
+ .regshift = 2,
+ .iotype = SERIAL_IO_MEM,
+ .flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST,
+ },
+ {
+ .membase = (void *)S6_REG_UART + 0x1000,
+ .mapbase = S6_REG_UART + 0x1000,
+ .irq = UART_INTNUM,
+ .uartclk = S6_SCLK,
+ .regshift = 2,
+ .iotype = SERIAL_IO_MEM,
+ .flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST,
+ },
+ { },
+};
+
+static struct platform_device platform_devices[] = {
+ {
+ .name = "serial8250",
+ .id = PLAT8250_DEV_PLATFORM,
+ .dev = {
+ .platform_data = serial_platform_data,
+ },
+ },
+};
+
+static int __init device_init(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(platform_devices); i++)
+ platform_device_register(&platform_devices[i]);
+ return 0;
+}
+arch_initcall_sync(device_init);
diff --git a/arch/xtensa/platforms/s6105/include/platform/gpio.h b/arch/xtensa/platforms/s6105/include/platform/gpio.h
new file mode 100644
index 000000000000..fa11aa4b61e9
--- /dev/null
+++ b/arch/xtensa/platforms/s6105/include/platform/gpio.h
@@ -0,0 +1,27 @@
+#ifndef __ASM_XTENSA_S6105_GPIO_H
+#define __ASM_XTENSA_S6105_GPIO_H
+
+#define GPIO_BP_TEMP_ALARM 0
+#define GPIO_PB_RESET_IN 1
+#define GPIO_EXP_IRQ 2
+#define GPIO_TRIGGER_IRQ 3
+#define GPIO_RTC_IRQ 4
+#define GPIO_PHY_IRQ 5
+#define GPIO_IMAGER_RESET 6
+#define GPIO_SD_IRQ 7
+#define GPIO_MINI_BOOT_INH 8
+#define GPIO_BOARD_RESET 9
+#define GPIO_EXP_PRESENT 10
+#define GPIO_LED1_NGREEN 12
+#define GPIO_LED1_RED 13
+#define GPIO_LED0_NGREEN 14
+#define GPIO_LED0_NRED 15
+#define GPIO_SPI_CS0 16
+#define GPIO_SPI_CS1 17
+#define GPIO_SPI_CS3 19
+#define GPIO_SPI_CS4 20
+#define GPIO_SD_WP 21
+#define GPIO_BP_RESET 22
+#define GPIO_ALARM_OUT 23
+
+#endif /* __ASM_XTENSA_S6105_GPIO_H */
diff --git a/arch/xtensa/platforms/s6105/include/platform/hardware.h b/arch/xtensa/platforms/s6105/include/platform/hardware.h
new file mode 100644
index 000000000000..d628efac7089
--- /dev/null
+++ b/arch/xtensa/platforms/s6105/include/platform/hardware.h
@@ -0,0 +1,11 @@
+#ifndef __XTENSA_S6105_HARDWARE_H
+#define __XTENSA_S6105_HARDWARE_H
+
+#define PLATFORM_DEFAULT_MEM_START 0x40000000
+#define PLATFORM_DEFAULT_MEM_SIZE 0x08000000
+
+#define MAX_DMA_ADDRESS 0
+
+#define KERNELOFFSET (PLATFORM_DEFAULT_MEM_START + 0x1000)
+
+#endif /* __XTENSA_S6105_HARDWARE_H */
diff --git a/arch/xtensa/platforms/s6105/include/platform/serial.h b/arch/xtensa/platforms/s6105/include/platform/serial.h
new file mode 100644
index 000000000000..c8a771e5981b
--- /dev/null
+++ b/arch/xtensa/platforms/s6105/include/platform/serial.h
@@ -0,0 +1,8 @@
+#ifndef __ASM_XTENSA_S6105_SERIAL_H
+#define __ASM_XTENSA_S6105_SERIAL_H
+
+#include <variant/hardware.h>
+
+#define BASE_BAUD (S6_SCLK / 16)
+
+#endif /* __ASM_XTENSA_S6105_SERIAL_H */
diff --git a/arch/xtensa/platforms/s6105/setup.c b/arch/xtensa/platforms/s6105/setup.c
new file mode 100644
index 000000000000..ae041d5027a2
--- /dev/null
+++ b/arch/xtensa/platforms/s6105/setup.c
@@ -0,0 +1,61 @@
+/*
+ * s6105 control routines
+ *
+ * Copyright (c) 2009 emlix GmbH
+ */
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+
+#include <asm/bootparam.h>
+
+#include <variant/hardware.h>
+#include <platform/gpio.h>
+
+void platform_halt(void)
+{
+ local_irq_disable();
+ while (1)
+ ;
+}
+
+void platform_power_off(void)
+{
+ platform_halt();
+}
+
+void platform_restart(void)
+{
+ platform_halt();
+}
+
+void __init platform_setup(char **cmdline)
+{
+ unsigned long reg;
+
+ reg = readl(S6_REG_GREG1 + S6_GREG1_CLKGATE);
+ reg &= ~(1 << S6_GREG1_BLOCK_SB);
+ writel(reg, S6_REG_GREG1 + S6_GREG1_CLKGATE);
+
+ reg = readl(S6_REG_GREG1 + S6_GREG1_BLOCKENA);
+ reg |= 1 << S6_GREG1_BLOCK_SB;
+ writel(reg, S6_REG_GREG1 + S6_GREG1_BLOCKENA);
+
+ printk(KERN_NOTICE "S6105 on Stretch S6000 - "
+ "Copyright (C) 2009 emlix GmbH <info@emlix.com>\n");
+}
+
+void __init platform_init(bp_tag_t *first)
+{
+ gpio_request(GPIO_LED1_NGREEN, "led1_green");
+ gpio_request(GPIO_LED1_RED, "led1_red");
+ gpio_direction_output(GPIO_LED1_NGREEN, 1);
+}
+
+void platform_heartbeat(void)
+{
+ static unsigned int c;
+
+ if (!(++c & 0x4F))
+ gpio_direction_output(GPIO_LED1_RED, !(c & 0x10));
+}
diff --git a/arch/xtensa/platforms/xt2000/include/platform/hardware.h b/arch/xtensa/platforms/xt2000/include/platform/hardware.h
index 41459ad07766..886ef156ded3 100644
--- a/arch/xtensa/platforms/xt2000/include/platform/hardware.h
+++ b/arch/xtensa/platforms/xt2000/include/platform/hardware.h
@@ -16,7 +16,6 @@
#define _XTENSA_XT2000_HARDWARE_H
#include <variant/core.h>
-#include <asm/io.h>
/*
* Memory configuration.
diff --git a/arch/xtensa/variants/s6000/Makefile b/arch/xtensa/variants/s6000/Makefile
new file mode 100644
index 000000000000..03b3975468bd
--- /dev/null
+++ b/arch/xtensa/variants/s6000/Makefile
@@ -0,0 +1,3 @@
+# s6000 Makefile
+
+obj-y += irq.o gpio.o
diff --git a/arch/xtensa/variants/s6000/gpio.c b/arch/xtensa/variants/s6000/gpio.c
new file mode 100644
index 000000000000..33a8d952934c
--- /dev/null
+++ b/arch/xtensa/variants/s6000/gpio.c
@@ -0,0 +1,71 @@
+/*
+ * s6000 gpio driver
+ *
+ * Copyright (c) 2009 emlix GmbH
+ * Authors: Oskar Schirmer <os@emlix.com>
+ * Johannes Weiner <jw@emlix.com>
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+
+#include <variant/hardware.h>
+
+#define S6_GPIO_DATA 0x000
+#define S6_GPIO_IS 0x404
+#define S6_GPIO_IBE 0x408
+#define S6_GPIO_IEV 0x40C
+#define S6_GPIO_IE 0x410
+#define S6_GPIO_RIS 0x414
+#define S6_GPIO_MIS 0x418
+#define S6_GPIO_IC 0x41C
+#define S6_GPIO_AFSEL 0x420
+#define S6_GPIO_DIR 0x800
+#define S6_GPIO_BANK(nr) ((nr) * 0x1000)
+#define S6_GPIO_MASK(nr) (4 << (nr))
+#define S6_GPIO_OFFSET(nr) \
+ (S6_GPIO_BANK((nr) >> 3) + S6_GPIO_MASK((nr) & 7))
+
+static int direction_input(struct gpio_chip *chip, unsigned int off)
+{
+ writeb(0, S6_REG_GPIO + S6_GPIO_DIR + S6_GPIO_OFFSET(off));
+ return 0;
+}
+
+static int get(struct gpio_chip *chip, unsigned int off)
+{
+ return readb(S6_REG_GPIO + S6_GPIO_DATA + S6_GPIO_OFFSET(off));
+}
+
+static int direction_output(struct gpio_chip *chip, unsigned int off, int val)
+{
+ unsigned rel = S6_GPIO_OFFSET(off);
+ writeb(~0, S6_REG_GPIO + S6_GPIO_DIR + rel);
+ writeb(val ? ~0 : 0, S6_REG_GPIO + S6_GPIO_DATA + rel);
+ return 0;
+}
+
+static void set(struct gpio_chip *chip, unsigned int off, int val)
+{
+ writeb(val ? ~0 : 0, S6_REG_GPIO + S6_GPIO_DATA + S6_GPIO_OFFSET(off));
+}
+
+static struct gpio_chip gpiochip = {
+ .owner = THIS_MODULE,
+ .direction_input = direction_input,
+ .get = get,
+ .direction_output = direction_output,
+ .set = set,
+ .base = 0,
+ .ngpio = 24,
+ .can_sleep = 0, /* no blocking io needed */
+ .exported = 0, /* no exporting to userspace */
+};
+
+static int gpio_init(void)
+{
+ return gpiochip_add(&gpiochip);
+}
+device_initcall(gpio_init);
diff --git a/arch/xtensa/variants/s6000/include/variant/core.h b/arch/xtensa/variants/s6000/include/variant/core.h
new file mode 100644
index 000000000000..af007953027e
--- /dev/null
+++ b/arch/xtensa/variants/s6000/include/variant/core.h
@@ -0,0 +1,431 @@
+/*
+ * Xtensa processor core configuration information.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (c) 1999-2008 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_CORE_CONFIGURATION_H
+#define _XTENSA_CORE_CONFIGURATION_H
+
+
+/****************************************************************************
+ Parameters Useful for Any Code, USER or PRIVILEGED
+ ****************************************************************************/
+
+/*
+ * Note: Macros of the form XCHAL_HAVE_*** have a value of 1 if the option is
+ * configured, and a value of 0 otherwise. These macros are always defined.
+ */
+
+
+/*----------------------------------------------------------------------
+ ISA
+ ----------------------------------------------------------------------*/
+
+#define XCHAL_HAVE_BE 0 /* big-endian byte ordering */
+#define XCHAL_HAVE_WINDOWED 1 /* windowed registers option */
+#define XCHAL_NUM_AREGS 64 /* num of physical addr regs */
+#define XCHAL_NUM_AREGS_LOG2 6 /* log2(XCHAL_NUM_AREGS) */
+#define XCHAL_MAX_INSTRUCTION_SIZE 8 /* max instr bytes (3..8) */
+#define XCHAL_HAVE_DEBUG 1 /* debug option */
+#define XCHAL_HAVE_DENSITY 1 /* 16-bit instructions */
+#define XCHAL_HAVE_LOOPS 1 /* zero-overhead loops */
+#define XCHAL_HAVE_NSA 1 /* NSA/NSAU instructions */
+#define XCHAL_HAVE_MINMAX 1 /* MIN/MAX instructions */
+#define XCHAL_HAVE_SEXT 1 /* SEXT instruction */
+#define XCHAL_HAVE_CLAMPS 1 /* CLAMPS instruction */
+#define XCHAL_HAVE_MUL16 1 /* MUL16S/MUL16U instructions */
+#define XCHAL_HAVE_MUL32 1 /* MULL instruction */
+#define XCHAL_HAVE_MUL32_HIGH 1 /* MULUH/MULSH instructions */
+#define XCHAL_HAVE_DIV32 0 /* QUOS/QUOU/REMS/REMU instructions */
+#define XCHAL_HAVE_L32R 1 /* L32R instruction */
+#define XCHAL_HAVE_ABSOLUTE_LITERALS 1 /* non-PC-rel (extended) L32R */
+#define XCHAL_HAVE_CONST16 0 /* CONST16 instruction */
+#define XCHAL_HAVE_ADDX 1 /* ADDX#/SUBX# instructions */
+#define XCHAL_HAVE_WIDE_BRANCHES 0 /* B*.W18 or B*.W15 instr's */
+#define XCHAL_HAVE_PREDICTED_BRANCHES 0 /* B[EQ/EQZ/NE/NEZ]T instr's */
+#define XCHAL_HAVE_CALL4AND12 1 /* (obsolete option) */
+#define XCHAL_HAVE_ABS 1 /* ABS instruction */
+/*#define XCHAL_HAVE_POPC 0*/ /* POPC instruction */
+/*#define XCHAL_HAVE_CRC 0*/ /* CRC instruction */
+#define XCHAL_HAVE_RELEASE_SYNC 0 /* L32AI/S32RI instructions */
+#define XCHAL_HAVE_S32C1I 0 /* S32C1I instruction */
+#define XCHAL_HAVE_SPECULATION 0 /* speculation */
+#define XCHAL_HAVE_FULL_RESET 0 /* all regs/state reset */
+#define XCHAL_NUM_CONTEXTS 1 /* */
+#define XCHAL_NUM_MISC_REGS 4 /* num of scratch regs (0..4) */
+#define XCHAL_HAVE_TAP_MASTER 0 /* JTAG TAP control instr's */
+#define XCHAL_HAVE_PRID 0 /* processor ID register */
+#define XCHAL_HAVE_THREADPTR 0 /* THREADPTR register */
+#define XCHAL_HAVE_BOOLEANS 1 /* boolean registers */
+#define XCHAL_HAVE_CP 1 /* CPENABLE reg (coprocessor) */
+#define XCHAL_CP_MAXCFG 8 /* max allowed cp id plus one */
+#define XCHAL_HAVE_MAC16 0 /* MAC16 package */
+#define XCHAL_HAVE_VECTORFPU2005 0 /* vector floating-point pkg */
+#define XCHAL_HAVE_FP 1 /* floating point pkg */
+#define XCHAL_HAVE_VECTRA1 0 /* Vectra I pkg */
+#define XCHAL_HAVE_VECTRALX 0 /* Vectra LX pkg */
+#define XCHAL_HAVE_HIFI2 0 /* HiFi2 Audio Engine pkg */
+
+
+/*----------------------------------------------------------------------
+ MISC
+ ----------------------------------------------------------------------*/
+
+#define XCHAL_NUM_WRITEBUFFER_ENTRIES 8 /* size of write buffer */
+#define XCHAL_INST_FETCH_WIDTH 8 /* instr-fetch width in bytes */
+#define XCHAL_DATA_WIDTH 16 /* data width in bytes */
+/* In T1050, applies to selected core load and store instructions (see ISA): */
+#define XCHAL_UNALIGNED_LOAD_EXCEPTION 1 /* unaligned loads cause exc. */
+#define XCHAL_UNALIGNED_STORE_EXCEPTION 1 /* unaligned stores cause exc.*/
+
+#define XCHAL_SW_VERSION 701001 /* sw version of this header */
+
+#define XCHAL_CORE_ID "stretch_bali" /* alphanum core name
+ (CoreID) set in the Xtensa
+ Processor Generator */
+
+#define XCHAL_BUILD_UNIQUE_ID 0x000104B9 /* 22-bit sw build ID */
+
+/*
+ * These definitions describe the hardware targeted by this software.
+ */
+#define XCHAL_HW_CONFIGID0 0xC2F3F9FE /* ConfigID hi 32 bits*/
+#define XCHAL_HW_CONFIGID1 0x054104B9 /* ConfigID lo 32 bits*/
+#define XCHAL_HW_VERSION_NAME "LX1.0.2" /* full version name */
+#define XCHAL_HW_VERSION_MAJOR 2100 /* major ver# of targeted hw */
+#define XCHAL_HW_VERSION_MINOR 2 /* minor ver# of targeted hw */
+#define XCHAL_HW_VERSION 210002 /* major*100+minor */
+#define XCHAL_HW_REL_LX1 1
+#define XCHAL_HW_REL_LX1_0 1
+#define XCHAL_HW_REL_LX1_0_2 1
+#define XCHAL_HW_CONFIGID_RELIABLE 1
+/* If software targets a *range* of hardware versions, these are the bounds: */
+#define XCHAL_HW_MIN_VERSION_MAJOR 2100 /* major v of earliest tgt hw */
+#define XCHAL_HW_MIN_VERSION_MINOR 2 /* minor v of earliest tgt hw */
+#define XCHAL_HW_MIN_VERSION 210002 /* earliest targeted hw */
+#define XCHAL_HW_MAX_VERSION_MAJOR 2100 /* major v of latest tgt hw */
+#define XCHAL_HW_MAX_VERSION_MINOR 2 /* minor v of latest tgt hw */
+#define XCHAL_HW_MAX_VERSION 210002 /* latest targeted hw */
+
+
+/*----------------------------------------------------------------------
+ CACHE
+ ----------------------------------------------------------------------*/
+
+#define XCHAL_ICACHE_LINESIZE 16 /* I-cache line size in bytes */
+#define XCHAL_DCACHE_LINESIZE 16 /* D-cache line size in bytes */
+#define XCHAL_ICACHE_LINEWIDTH 4 /* log2(I line size in bytes) */
+#define XCHAL_DCACHE_LINEWIDTH 4 /* log2(D line size in bytes) */
+
+#define XCHAL_ICACHE_SIZE 32768 /* I-cache size in bytes or 0 */
+#define XCHAL_DCACHE_SIZE 32768 /* D-cache size in bytes or 0 */
+
+#define XCHAL_DCACHE_IS_WRITEBACK 1 /* writeback feature */
+
+
+
+
+/****************************************************************************
+ Parameters Useful for PRIVILEGED (Supervisory or Non-Virtualized) Code
+ ****************************************************************************/
+
+
+#ifndef XTENSA_HAL_NON_PRIVILEGED_ONLY
+
+/*----------------------------------------------------------------------
+ CACHE
+ ----------------------------------------------------------------------*/
+
+#define XCHAL_HAVE_PIF 1 /* any outbound PIF present */
+
+/* If present, cache size in bytes == (ways * 2^(linewidth + setwidth)). */
+
+/* Number of cache sets in log2(lines per way): */
+#define XCHAL_ICACHE_SETWIDTH 9
+#define XCHAL_DCACHE_SETWIDTH 10
+
+/* Cache set associativity (number of ways): */
+#define XCHAL_ICACHE_WAYS 4
+#define XCHAL_DCACHE_WAYS 2
+
+/* Cache features: */
+#define XCHAL_ICACHE_LINE_LOCKABLE 1
+#define XCHAL_DCACHE_LINE_LOCKABLE 0
+#define XCHAL_ICACHE_ECC_PARITY 0
+#define XCHAL_DCACHE_ECC_PARITY 0
+
+/* Number of encoded cache attr bits (see <xtensa/hal.h> for decoded bits): */
+#define XCHAL_CA_BITS 4
+
+
+/*----------------------------------------------------------------------
+ INTERNAL I/D RAM/ROMs and XLMI
+ ----------------------------------------------------------------------*/
+
+#define XCHAL_NUM_INSTROM 0 /* number of core instr. ROMs */
+#define XCHAL_NUM_INSTRAM 0 /* number of core instr. RAMs */
+#define XCHAL_NUM_DATAROM 0 /* number of core data ROMs */
+#define XCHAL_NUM_DATARAM 1 /* number of core data RAMs */
+#define XCHAL_NUM_URAM 0 /* number of core unified RAMs*/
+#define XCHAL_NUM_XLMI 1 /* number of core XLMI ports */
+
+/* Data RAM 0: */
+#define XCHAL_DATARAM0_VADDR 0x3FFF0000
+#define XCHAL_DATARAM0_PADDR 0x3FFF0000
+#define XCHAL_DATARAM0_SIZE 65536
+#define XCHAL_DATARAM0_ECC_PARITY 0
+
+/* XLMI Port 0: */
+#define XCHAL_XLMI0_VADDR 0x37F80000
+#define XCHAL_XLMI0_PADDR 0x37F80000
+#define XCHAL_XLMI0_SIZE 262144
+#define XCHAL_XLMI0_ECC_PARITY 0
+
+
+/*----------------------------------------------------------------------
+ INTERRUPTS and TIMERS
+ ----------------------------------------------------------------------*/
+
+#define XCHAL_HAVE_INTERRUPTS 1 /* interrupt option */
+#define XCHAL_HAVE_HIGHPRI_INTERRUPTS 1 /* med/high-pri. interrupts */
+#define XCHAL_HAVE_NMI 1 /* non-maskable interrupt */
+#define XCHAL_HAVE_CCOUNT 1 /* CCOUNT reg. (timer option) */
+#define XCHAL_NUM_TIMERS 3 /* number of CCOMPAREn regs */
+#define XCHAL_NUM_INTERRUPTS 27 /* number of interrupts */
+#define XCHAL_NUM_INTERRUPTS_LOG2 5 /* ceil(log2(NUM_INTERRUPTS)) */
+#define XCHAL_NUM_EXTINTERRUPTS 20 /* num of external interrupts */
+#define XCHAL_NUM_INTLEVELS 4 /* number of interrupt levels
+ (not including level zero) */
+#define XCHAL_EXCM_LEVEL 1 /* level masked by PS.EXCM */
+ /* (always 1 in XEA1; levels 2 .. EXCM_LEVEL are "medium priority") */
+
+/* Masks of interrupts at each interrupt level: */
+#define XCHAL_INTLEVEL1_MASK 0x01F07FFF
+#define XCHAL_INTLEVEL2_MASK 0x02018000
+#define XCHAL_INTLEVEL3_MASK 0x04060000
+#define XCHAL_INTLEVEL4_MASK 0x00000000
+#define XCHAL_INTLEVEL5_MASK 0x00080000
+#define XCHAL_INTLEVEL6_MASK 0x00000000
+#define XCHAL_INTLEVEL7_MASK 0x00000000
+
+/* Masks of interrupts at each range 1..n of interrupt levels: */
+#define XCHAL_INTLEVEL1_ANDBELOW_MASK 0x01F07FFF
+#define XCHAL_INTLEVEL2_ANDBELOW_MASK 0x03F1FFFF
+#define XCHAL_INTLEVEL3_ANDBELOW_MASK 0x07F7FFFF
+#define XCHAL_INTLEVEL4_ANDBELOW_MASK 0x07F7FFFF
+#define XCHAL_INTLEVEL5_ANDBELOW_MASK 0x07FFFFFF
+#define XCHAL_INTLEVEL6_ANDBELOW_MASK 0x07FFFFFF
+#define XCHAL_INTLEVEL7_ANDBELOW_MASK 0x07FFFFFF
+
+/* Level of each interrupt: */
+#define XCHAL_INT0_LEVEL 1
+#define XCHAL_INT1_LEVEL 1
+#define XCHAL_INT2_LEVEL 1
+#define XCHAL_INT3_LEVEL 1
+#define XCHAL_INT4_LEVEL 1
+#define XCHAL_INT5_LEVEL 1
+#define XCHAL_INT6_LEVEL 1
+#define XCHAL_INT7_LEVEL 1
+#define XCHAL_INT8_LEVEL 1
+#define XCHAL_INT9_LEVEL 1
+#define XCHAL_INT10_LEVEL 1
+#define XCHAL_INT11_LEVEL 1
+#define XCHAL_INT12_LEVEL 1
+#define XCHAL_INT13_LEVEL 1
+#define XCHAL_INT14_LEVEL 1
+#define XCHAL_INT15_LEVEL 2
+#define XCHAL_INT16_LEVEL 2
+#define XCHAL_INT17_LEVEL 3
+#define XCHAL_INT18_LEVEL 3
+#define XCHAL_INT19_LEVEL 5
+#define XCHAL_INT20_LEVEL 1
+#define XCHAL_INT21_LEVEL 1
+#define XCHAL_INT22_LEVEL 1
+#define XCHAL_INT23_LEVEL 1
+#define XCHAL_INT24_LEVEL 1
+#define XCHAL_INT25_LEVEL 2
+#define XCHAL_INT26_LEVEL 3
+#define XCHAL_DEBUGLEVEL 4 /* debug interrupt level */
+#define XCHAL_HAVE_DEBUG_EXTERN_INT 1 /* OCD external db interrupt */
+#define XCHAL_NMILEVEL 5 /* NMI "level" (for use with
+ EXCSAVE/EPS/EPC_n, RFI n) */
+
+/* Type of each interrupt: */
+#define XCHAL_INT0_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT1_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT2_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT3_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT4_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT5_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT6_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT7_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT8_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT9_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT10_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT11_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT12_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT13_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT14_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT15_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT16_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT17_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT18_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT19_TYPE XTHAL_INTTYPE_NMI
+#define XCHAL_INT20_TYPE XTHAL_INTTYPE_SOFTWARE
+#define XCHAL_INT21_TYPE XTHAL_INTTYPE_SOFTWARE
+#define XCHAL_INT22_TYPE XTHAL_INTTYPE_SOFTWARE
+#define XCHAL_INT23_TYPE XTHAL_INTTYPE_SOFTWARE
+#define XCHAL_INT24_TYPE XTHAL_INTTYPE_TIMER
+#define XCHAL_INT25_TYPE XTHAL_INTTYPE_TIMER
+#define XCHAL_INT26_TYPE XTHAL_INTTYPE_TIMER
+
+/* Masks of interrupts for each type of interrupt: */
+#define XCHAL_INTTYPE_MASK_UNCONFIGURED 0xF8000000
+#define XCHAL_INTTYPE_MASK_SOFTWARE 0x00F00000
+#define XCHAL_INTTYPE_MASK_EXTERN_EDGE 0x00000000
+#define XCHAL_INTTYPE_MASK_EXTERN_LEVEL 0x0007FFFF
+#define XCHAL_INTTYPE_MASK_TIMER 0x07000000
+#define XCHAL_INTTYPE_MASK_NMI 0x00080000
+#define XCHAL_INTTYPE_MASK_WRITE_ERROR 0x00000000
+
+/* Interrupt numbers assigned to specific interrupt sources: */
+#define XCHAL_TIMER0_INTERRUPT 24 /* CCOMPARE0 */
+#define XCHAL_TIMER1_INTERRUPT 25 /* CCOMPARE1 */
+#define XCHAL_TIMER2_INTERRUPT 26 /* CCOMPARE2 */
+#define XCHAL_TIMER3_INTERRUPT XTHAL_TIMER_UNCONFIGURED
+#define XCHAL_NMI_INTERRUPT 19 /* non-maskable interrupt */
+
+/* Interrupt numbers for levels at which only one interrupt is configured: */
+#define XCHAL_INTLEVEL5_NUM 19
+/* (There are many interrupts each at level(s) 1, 2, 3.) */
+
+
+/*
+ * External interrupt vectors/levels.
+ * These macros describe how Xtensa processor interrupt numbers
+ * (as numbered internally, eg. in INTERRUPT and INTENABLE registers)
+ * map to external BInterrupt<n> pins, for those interrupts
+ * configured as external (level-triggered, edge-triggered, or NMI).
+ * See the Xtensa processor databook for more details.
+ */
+
+/* Core interrupt numbers mapped to each EXTERNAL interrupt number: */
+#define XCHAL_EXTINT0_NUM 0 /* (intlevel 1) */
+#define XCHAL_EXTINT1_NUM 1 /* (intlevel 1) */
+#define XCHAL_EXTINT2_NUM 2 /* (intlevel 1) */
+#define XCHAL_EXTINT3_NUM 3 /* (intlevel 1) */
+#define XCHAL_EXTINT4_NUM 4 /* (intlevel 1) */
+#define XCHAL_EXTINT5_NUM 5 /* (intlevel 1) */
+#define XCHAL_EXTINT6_NUM 6 /* (intlevel 1) */
+#define XCHAL_EXTINT7_NUM 7 /* (intlevel 1) */
+#define XCHAL_EXTINT8_NUM 8 /* (intlevel 1) */
+#define XCHAL_EXTINT9_NUM 9 /* (intlevel 1) */
+#define XCHAL_EXTINT10_NUM 10 /* (intlevel 1) */
+#define XCHAL_EXTINT11_NUM 11 /* (intlevel 1) */
+#define XCHAL_EXTINT12_NUM 12 /* (intlevel 1) */
+#define XCHAL_EXTINT13_NUM 13 /* (intlevel 1) */
+#define XCHAL_EXTINT14_NUM 14 /* (intlevel 1) */
+#define XCHAL_EXTINT15_NUM 15 /* (intlevel 2) */
+#define XCHAL_EXTINT16_NUM 16 /* (intlevel 2) */
+#define XCHAL_EXTINT17_NUM 17 /* (intlevel 3) */
+#define XCHAL_EXTINT18_NUM 18 /* (intlevel 3) */
+#define XCHAL_EXTINT19_NUM 19 /* (intlevel 5) */
+
+
+/*----------------------------------------------------------------------
+ EXCEPTIONS and VECTORS
+ ----------------------------------------------------------------------*/
+
+#define XCHAL_XEA_VERSION 2 /* Xtensa Exception Architecture
+ number: 1 == XEA1 (old)
+ 2 == XEA2 (new)
+ 0 == XEAX (extern) */
+#define XCHAL_HAVE_XEA1 0 /* Exception Architecture 1 */
+#define XCHAL_HAVE_XEA2 1 /* Exception Architecture 2 */
+#define XCHAL_HAVE_XEAX 0 /* External Exception Arch. */
+#define XCHAL_HAVE_EXCEPTIONS 1 /* exception option */
+#define XCHAL_HAVE_MEM_ECC_PARITY 0 /* local memory ECC/parity */
+#define XCHAL_HAVE_VECTOR_SELECT 0 /* relocatable vectors */
+#define XCHAL_HAVE_VECBASE 0 /* relocatable vectors */
+
+#define XCHAL_RESET_VECOFS 0x00000000
+#define XCHAL_RESET_VECTOR_VADDR 0x3FFE03D0
+#define XCHAL_RESET_VECTOR_PADDR 0x3FFE03D0
+#define XCHAL_USER_VECOFS 0x00000000
+#define XCHAL_USER_VECTOR_VADDR 0x40000220
+#define XCHAL_USER_VECTOR_PADDR 0x40000220
+#define XCHAL_KERNEL_VECOFS 0x00000000
+#define XCHAL_KERNEL_VECTOR_VADDR 0x40000200
+#define XCHAL_KERNEL_VECTOR_PADDR 0x40000200
+#define XCHAL_DOUBLEEXC_VECOFS 0x00000000
+#define XCHAL_DOUBLEEXC_VECTOR_VADDR 0x400002A0
+#define XCHAL_DOUBLEEXC_VECTOR_PADDR 0x400002A0
+#define XCHAL_WINDOW_OF4_VECOFS 0x00000000
+#define XCHAL_WINDOW_UF4_VECOFS 0x00000040
+#define XCHAL_WINDOW_OF8_VECOFS 0x00000080
+#define XCHAL_WINDOW_UF8_VECOFS 0x000000C0
+#define XCHAL_WINDOW_OF12_VECOFS 0x00000100
+#define XCHAL_WINDOW_UF12_VECOFS 0x00000140
+#define XCHAL_WINDOW_VECTORS_VADDR 0x40000000
+#define XCHAL_WINDOW_VECTORS_PADDR 0x40000000
+#define XCHAL_INTLEVEL2_VECOFS 0x00000000
+#define XCHAL_INTLEVEL2_VECTOR_VADDR 0x40000240
+#define XCHAL_INTLEVEL2_VECTOR_PADDR 0x40000240
+#define XCHAL_INTLEVEL3_VECOFS 0x00000000
+#define XCHAL_INTLEVEL3_VECTOR_VADDR 0x40000260
+#define XCHAL_INTLEVEL3_VECTOR_PADDR 0x40000260
+#define XCHAL_INTLEVEL4_VECOFS 0x00000000
+#define XCHAL_INTLEVEL4_VECTOR_VADDR 0x40000390
+#define XCHAL_INTLEVEL4_VECTOR_PADDR 0x40000390
+#define XCHAL_DEBUG_VECOFS XCHAL_INTLEVEL4_VECOFS
+#define XCHAL_DEBUG_VECTOR_VADDR XCHAL_INTLEVEL4_VECTOR_VADDR
+#define XCHAL_DEBUG_VECTOR_PADDR XCHAL_INTLEVEL4_VECTOR_PADDR
+#define XCHAL_NMI_VECOFS 0x00000000
+#define XCHAL_NMI_VECTOR_VADDR 0x400003B0
+#define XCHAL_NMI_VECTOR_PADDR 0x400003B0
+#define XCHAL_INTLEVEL5_VECOFS XCHAL_NMI_VECOFS
+#define XCHAL_INTLEVEL5_VECTOR_VADDR XCHAL_NMI_VECTOR_VADDR
+#define XCHAL_INTLEVEL5_VECTOR_PADDR XCHAL_NMI_VECTOR_PADDR
+
+
+/*----------------------------------------------------------------------
+ DEBUG
+ ----------------------------------------------------------------------*/
+
+#define XCHAL_HAVE_OCD 1 /* OnChipDebug option */
+#define XCHAL_NUM_IBREAK 2 /* number of IBREAKn regs */
+#define XCHAL_NUM_DBREAK 2 /* number of DBREAKn regs */
+#define XCHAL_HAVE_OCD_DIR_ARRAY 1 /* faster OCD option */
+
+
+/*----------------------------------------------------------------------
+ MMU
+ ----------------------------------------------------------------------*/
+
+/* See core-matmap.h header file for more details. */
+
+#define XCHAL_HAVE_TLBS 1 /* inverse of HAVE_CACHEATTR */
+#define XCHAL_HAVE_SPANNING_WAY 1 /* one way maps I+D 4GB vaddr */
+#define XCHAL_HAVE_IDENTITY_MAP 1 /* vaddr == paddr always */
+#define XCHAL_HAVE_CACHEATTR 0 /* CACHEATTR register present */
+#define XCHAL_HAVE_MIMIC_CACHEATTR 1 /* region protection */
+#define XCHAL_HAVE_XLT_CACHEATTR 0 /* region prot. w/translation */
+#define XCHAL_HAVE_PTP_MMU 0 /* full MMU (with page table
+ [autorefill] and protection)
+ usable for an MMU-based OS */
+/* If none of the above last 4 are set, it's a custom TLB configuration. */
+
+#define XCHAL_MMU_ASID_BITS 0 /* number of bits in ASIDs */
+#define XCHAL_MMU_RINGS 1 /* number of rings (1..4) */
+#define XCHAL_MMU_RING_BITS 0 /* num of bits in RING field */
+
+#endif /* !XTENSA_HAL_NON_PRIVILEGED_ONLY */
+
+
+#endif /* _XTENSA_CORE_CONFIGURATION_H */
+
diff --git a/arch/xtensa/variants/s6000/include/variant/hardware.h b/arch/xtensa/variants/s6000/include/variant/hardware.h
new file mode 100644
index 000000000000..5d9ba098d84a
--- /dev/null
+++ b/arch/xtensa/variants/s6000/include/variant/hardware.h
@@ -0,0 +1,259 @@
+#ifndef __XTENSA_S6000_HARDWARE_H
+#define __XTENSA_S6000_HARDWARE_H
+
+#define S6_SCLK 1843200
+
+#define S6_MEM_REG 0x20000000
+#define S6_MEM_EFI 0x33F00000
+#define S6_MEM_PCIE_DATARAM1 0x34000000
+#define S6_MEM_XLMI 0x37F80000
+#define S6_MEM_PIF_DATARAM1 0x37FFC000
+#define S6_MEM_GMAC 0x38000000
+#define S6_MEM_I2S 0x3A000000
+#define S6_MEM_EGIB 0x3C000000
+#define S6_MEM_PCIE_CFG 0x3E000000
+#define S6_MEM_PIF_DATARAM 0x3FFE0000
+#define S6_MEM_XLMI_DATARAM 0x3FFF0000
+#define S6_MEM_DDR 0x40000000
+#define S6_MEM_PCIE_APER 0xC0000000
+#define S6_MEM_AUX 0xF0000000
+
+/* Device addresses */
+
+#define S6_REG_SCB S6_MEM_REG
+#define S6_REG_NB (S6_REG_SCB + 0x10000)
+#define S6_REG_LMSDMA (S6_REG_SCB + 0x20000)
+#define S6_REG_NI (S6_REG_SCB + 0x30000)
+#define S6_REG_NIDMA (S6_REG_SCB + 0x40000)
+#define S6_REG_NS (S6_REG_SCB + 0x50000)
+#define S6_REG_DDR (S6_REG_SCB + 0x60000)
+#define S6_REG_GREG1 (S6_REG_SCB + 0x70000)
+#define S6_REG_DP (S6_REG_SCB + 0x80000)
+#define S6_REG_DPDMA (S6_REG_SCB + 0x90000)
+#define S6_REG_EGIB (S6_REG_SCB + 0xA0000)
+#define S6_REG_PCIE (S6_REG_SCB + 0xB0000)
+#define S6_REG_I2S (S6_REG_SCB + 0xC0000)
+#define S6_REG_GMAC (S6_REG_SCB + 0xD0000)
+#define S6_REG_HIFDMA (S6_REG_SCB + 0xE0000)
+#define S6_REG_GREG2 (S6_REG_SCB + 0xF0000)
+
+#define S6_REG_APB S6_REG_SCB
+#define S6_REG_UART (S6_REG_APB + 0x0000)
+#define S6_REG_INTC (S6_REG_APB + 0x2000)
+#define S6_REG_SPI (S6_REG_APB + 0x3000)
+#define S6_REG_I2C (S6_REG_APB + 0x4000)
+#define S6_REG_GPIO (S6_REG_APB + 0x8000)
+
+/* Global register block */
+
+#define S6_GREG1_PLL_LOCKCLEAR 0x000
+#define S6_GREG1_PLL_LOCK_SYS 0
+#define S6_GREG1_PLL_LOCK_IO 1
+#define S6_GREG1_PLL_LOCK_AIM 2
+#define S6_GREG1_PLL_LOCK_DP0 3
+#define S6_GREG1_PLL_LOCK_DP2 4
+#define S6_GREG1_PLL_LOCK_DDR 5
+#define S6_GREG1_PLL_LOCKSTAT 0x004
+#define S6_GREG1_PLL_LOCKSTAT_CURLOCK 0
+#define S6_GREG1_PLL_LOCKSTAT_EVERUNLCK 8
+#define S6_GREG1_PLLSEL 0x010
+#define S6_GREG1_PLLSEL_AIM 0
+#define S6_GREG1_PLLSEL_AIM_DDR2 0
+#define S6_GREG1_PLLSEL_AIM_300MHZ 1
+#define S6_GREG1_PLLSEL_AIM_240MHZ 2
+#define S6_GREG1_PLLSEL_AIM_200MHZ 3
+#define S6_GREG1_PLLSEL_AIM_150MHZ 4
+#define S6_GREG1_PLLSEL_AIM_120MHZ 5
+#define S6_GREG1_PLLSEL_AIM_40MHZ 6
+#define S6_GREG1_PLLSEL_AIM_PLLAIMREF 7
+#define S6_GREG1_PLLSEL_AIM_MASK 7
+#define S6_GREG1_PLLSEL_DDR 8
+#define S6_GREG1_PLLSEL_DDR_HS 0
+#define S6_GREG1_PLLSEL_DDR_333MHZ 1
+#define S6_GREG1_PLLSEL_DDR_250MHZ 2
+#define S6_GREG1_PLLSEL_DDR_200MHZ 3
+#define S6_GREG1_PLLSEL_DDR_167MHZ 4
+#define S6_GREG1_PLLSEL_DDR_100MHZ 5
+#define S6_GREG1_PLLSEL_DDR_33MHZ 6
+#define S6_GREG1_PLLSEL_DDR_PLLIOREF 7
+#define S6_GREG1_PLLSEL_DDR_MASK 7
+#define S6_GREG1_PLLSEL_GMAC 16
+#define S6_GREG1_PLLSEL_GMAC_125MHZ 0
+#define S6_GREG1_PLLSEL_GMAC_25MHZ 1
+#define S6_GREG1_PLLSEL_GMAC_2500KHZ 2
+#define S6_GREG1_PLLSEL_GMAC_EXTERN 3
+#define S6_GREG1_PLLSEL_GMAC_MASK 3
+#define S6_GREG1_PLLSEL_GMII 18
+#define S6_GREG1_PLLSEL_GMII_111MHZ 0
+#define S6_GREG1_PLLSEL_GMII_IOREF 1
+#define S6_GREG1_PLLSEL_GMII_NONE 2
+#define S6_GREG1_PLLSEL_GMII_125MHZ 3
+#define S6_GREG1_PLLSEL_GMII_MASK 3
+#define S6_GREG1_SYSUNLOCKCNT 0x020
+#define S6_GREG1_IOUNLOCKCNT 0x024
+#define S6_GREG1_AIMUNLOCKCNT 0x028
+#define S6_GREG1_DP0UNLOCKCNT 0x02C
+#define S6_GREG1_DP2UNLOCKCNT 0x030
+#define S6_GREG1_DDRUNLOCKCNT 0x034
+#define S6_GREG1_CLKBAL0 0x040
+#define S6_GREG1_CLKBAL0_LSGB 0
+#define S6_GREG1_CLKBAL0_LSPX 8
+#define S6_GREG1_CLKBAL0_MEMDO 16
+#define S6_GREG1_CLKBAL0_HSXT1 24
+#define S6_GREG1_CLKBAL1 0x044
+#define S6_GREG1_CLKBAL1_HSISEF 0
+#define S6_GREG1_CLKBAL1_HSNI 8
+#define S6_GREG1_CLKBAL1_HSNS 16
+#define S6_GREG1_CLKBAL1_HSISEFCFG 24
+#define S6_GREG1_CLKBAL2 0x048
+#define S6_GREG1_CLKBAL2_LSNB 0
+#define S6_GREG1_CLKBAL2_LSSB 8
+#define S6_GREG1_CLKBAL2_LSREST 24
+#define S6_GREG1_CLKBAL3 0x04C
+#define S6_GREG1_CLKBAL3_ISEFXAD 0
+#define S6_GREG1_CLKBAL3_ISEFLMS 8
+#define S6_GREG1_CLKBAL3_ISEFISEF 16
+#define S6_GREG1_CLKBAL3_DDRDD 24
+#define S6_GREG1_CLKBAL4 0x050
+#define S6_GREG1_CLKBAL4_DDRDP 0
+#define S6_GREG1_CLKBAL4_DDRDO 8
+#define S6_GREG1_CLKBAL4_DDRNB 16
+#define S6_GREG1_CLKBAL4_DDRLMS 24
+#define S6_GREG1_BLOCKENA 0x100
+#define S6_GREG1_BLOCK_DDR 0
+#define S6_GREG1_BLOCK_DP 1
+#define S6_GREG1_BLOCK_NSNI 2
+#define S6_GREG1_BLOCK_PCIE 3
+#define S6_GREG1_BLOCK_GMAC 4
+#define S6_GREG1_BLOCK_I2S 5
+#define S6_GREG1_BLOCK_EGIB 6
+#define S6_GREG1_BLOCK_SB 7
+#define S6_GREG1_BLOCK_XT1 8
+#define S6_GREG1_CLKGATE 0x104
+#define S6_GREG1_BGATE_AIMNORTH 9
+#define S6_GREG1_BGATE_AIMEAST 10
+#define S6_GREG1_BGATE_AIMWEST 11
+#define S6_GREG1_BGATE_AIMSOUTH 12
+#define S6_GREG1_CHIPRES 0x108
+#define S6_GREG1_CHIPRES_SOFTRES 0
+#define S6_GREG1_CHIPRES_LOSTLOCK 1
+#define S6_GREG1_RESETCAUSE 0x10C
+#define S6_GREG1_RESETCAUSE_RESETN 0
+#define S6_GREG1_RESETCAUSE_GLOBAL 1
+#define S6_GREG1_RESETCAUSE_WDOGTIMER 2
+#define S6_GREG1_RESETCAUSE_SWCHIP 3
+#define S6_GREG1_RESETCAUSE_PLLSYSLOSS 4
+#define S6_GREG1_RESETCAUSE_PCIE 5
+#define S6_GREG1_RESETCAUSE_CREATEDGLOB 6
+#define S6_GREG1_REFCLOCKCNT 0x110
+#define S6_GREG1_RESETTIMER 0x114
+#define S6_GREG1_NMITIMER 0x118
+#define S6_GREG1_GLOBAL_TIMER 0x11C
+#define S6_GREG1_TIMER0 0x180
+#define S6_GREG1_TIMER1 0x184
+#define S6_GREG1_UARTCLOCKSEL 0x204
+#define S6_GREG1_CHIPVERSPACKG 0x208
+#define S6_GREG1_CHIPVERSPACKG_CHIPVID 0
+#define S6_GREG1_CHIPVERSPACKG_PACKSEL 8
+#define S6_GREG1_ONDIETERMCTRL 0x20C
+#define S6_GREG1_ONDIETERMCTRL_WEST 0
+#define S6_GREG1_ONDIETERMCTRL_NORTH 2
+#define S6_GREG1_ONDIETERMCTRL_EAST 4
+#define S6_GREG1_ONDIETERMCTRL_SOUTH 6
+#define S6_GREG1_ONDIETERMCTRL_NONE 0
+#define S6_GREG1_ONDIETERMCTRL_75OHM 2
+#define S6_GREG1_ONDIETERMCTRL_MASK 3
+#define S6_GREG1_BOOT_CFG0 0x210
+#define S6_GREG1_BOOT_CFG0_AIMSTRONG 1
+#define S6_GREG1_BOOT_CFG0_MINIBOOTDL 2
+#define S6_GREG1_BOOT_CFG0_OCDGPIO8SET 5
+#define S6_GREG1_BOOT_CFG0_OCDGPIOENA 6
+#define S6_GREG1_BOOT_CFG0_DOWNSTREAM 7
+#define S6_GREG1_BOOT_CFG0_PLLSYSDIV 8
+#define S6_GREG1_BOOT_CFG0_PLLSYSDIV_300MHZ 1
+#define S6_GREG1_BOOT_CFG0_PLLSYSDIV_240MHZ 2
+#define S6_GREG1_BOOT_CFG0_PLLSYSDIV_200MHZ 3
+#define S6_GREG1_BOOT_CFG0_PLLSYSDIV_150MHZ 4
+#define S6_GREG1_BOOT_CFG0_PLLSYSDIV_120MHZ 5
+#define S6_GREG1_BOOT_CFG0_PLLSYSDIV_40MHZ 6
+#define S6_GREG1_BOOT_CFG0_PLLSYSDIV_MASK 7
+#define S6_GREG1_BOOT_CFG0_BALHSLMS 12
+#define S6_GREG1_BOOT_CFG0_BALHSNB 18
+#define S6_GREG1_BOOT_CFG0_BALHSXAD 24
+#define S6_GREG1_BOOT_CFG1 0x214
+#define S6_GREG1_BOOT_CFG1_PCIE1LANE 1
+#define S6_GREG1_BOOT_CFG1_MPLLPRESCALE 2
+#define S6_GREG1_BOOT_CFG1_MPLLNCY 4
+#define S6_GREG1_BOOT_CFG1_MPLLNCY5 9
+#define S6_GREG1_BOOT_CFG1_BALHSREST 14
+#define S6_GREG1_BOOT_CFG1_BALHSPSMEMS 20
+#define S6_GREG1_BOOT_CFG1_BALLSGI 26
+#define S6_GREG1_BOOT_CFG2 0x218
+#define S6_GREG1_BOOT_CFG2_PEID 0
+#define S6_GREG1_BOOT_CFG3 0x21C
+#define S6_GREG1_DRAMBUSYHOLDOF 0x220
+#define S6_GREG1_DRAMBUSYHOLDOF_XT0 0
+#define S6_GREG1_DRAMBUSYHOLDOF_XT1 4
+#define S6_GREG1_DRAMBUSYHOLDOF_XT_MASK 7
+#define S6_GREG1_PCIEBAR1SIZE 0x224
+#define S6_GREG1_PCIEBAR2SIZE 0x228
+#define S6_GREG1_PCIEVENDOR 0x22C
+#define S6_GREG1_PCIEDEVICE 0x230
+#define S6_GREG1_PCIEREV 0x234
+#define S6_GREG1_PCIECLASS 0x238
+#define S6_GREG1_XT1DCACHEMISS 0x240
+#define S6_GREG1_XT1ICACHEMISS 0x244
+#define S6_GREG1_HWSEMAPHORE(n) (0x400 + 4 * (n))
+#define S6_GREG1_HWSEMAPHORE_NB 16
+
+/* peripheral interrupt numbers */
+
+#define S6_INTC_GPIO(n) (n) /* 0..3 */
+#define S6_INTC_I2C 4
+#define S6_INTC_SPI 5
+#define S6_INTC_NB_ERR 6
+#define S6_INTC_DMA_LMSERR 7
+#define S6_INTC_DMA_LMSLOWWMRK(n) (8 + (n)) /* 0..11 */
+#define S6_INTC_DMA_LMSPENDCNT(n) (20 + (n)) /* 0..11 */
+#define S6_INTC_DMA HOSTLOWWMRK(n) (32 + (n)) /* 0..6 */
+#define S6_INTC_DMA_HOSTPENDCNT(n) (39 + (n)) /* 0..6 */
+#define S6_INTC_DMA_HOSTERR 46
+#define S6_INTC_UART(n) (47 + (n)) /* 0..1 */
+#define S6_INTC_XAD 49
+#define S6_INTC_NI_ERR 50
+#define S6_INTC_NI_INFIFOFULL 51
+#define S6_INTC_DMA_NIERR 52
+#define S6_INTC_DMA_NILOWWMRK(n) (53 + (n)) /* 0..3 */
+#define S6_INTC_DMA_NIPENDCNT(n) (57 + (n)) /* 0..3 */
+#define S6_INTC_DDR 61
+#define S6_INTC_NS_ERR 62
+#define S6_INTC_EFI_CFGERR 63
+#define S6_INTC_EFI_ISEFTEST 64
+#define S6_INTC_EFI_WRITEERR 65
+#define S6_INTC_NMI_TIMER 66
+#define S6_INTC_PLLLOCK_SYS 67
+#define S6_INTC_PLLLOCK_IO 68
+#define S6_INTC_PLLLOCK_AIM 69
+#define S6_INTC_PLLLOCK_DP0 70
+#define S6_INTC_PLLLOCK_DP2 71
+#define S6_INTC_I2S_ERR 72
+#define S6_INTC_GMAC_STAT 73
+#define S6_INTC_GMAC_ERR 74
+#define S6_INTC_GIB_ERR 75
+#define S6_INTC_PCIE_ERR 76
+#define S6_INTC_PCIE_MSI(n) (77 + (n)) /* 0..3 */
+#define S6_INTC_PCIE_INTA 81
+#define S6_INTC_PCIE_INTB 82
+#define S6_INTC_PCIE_INTC 83
+#define S6_INTC_PCIE_INTD 84
+#define S6_INTC_SW(n) (85 + (n)) /* 0..9 */
+#define S6_INTC_SW_ENABLE(n) (85 + 256 + (n))
+#define S6_INTC_DMA_DP_ERR 95
+#define S6_INTC_DMA_DPLOWWMRK(n) (96 + (n)) /* 0..3 */
+#define S6_INTC_DMA_DPPENDCNT(n) (100 + (n)) /* 0..3 */
+#define S6_INTC_DMA_DPTERMCNT(n) (104 + (n)) /* 0..3 */
+#define S6_INTC_TIMER0 108
+#define S6_INTC_TIMER1 109
+#define S6_INTC_DMA_HOSTTERMCNT(n) (110 + (n)) /* 0..6 */
+
+#endif /* __XTENSA_S6000_HARDWARE_H */
diff --git a/arch/xtensa/variants/s6000/include/variant/irq.h b/arch/xtensa/variants/s6000/include/variant/irq.h
new file mode 100644
index 000000000000..fa031cb0acc4
--- /dev/null
+++ b/arch/xtensa/variants/s6000/include/variant/irq.h
@@ -0,0 +1,9 @@
+#ifndef __XTENSA_S6000_IRQ_H
+#define __XTENSA_S6000_IRQ_H
+
+#define NO_IRQ (-1)
+
+extern void variant_irq_enable(unsigned int irq);
+extern void variant_irq_disable(unsigned int irq);
+
+#endif /* __XTENSA_S6000_IRQ_H */
diff --git a/arch/xtensa/variants/s6000/include/variant/tie-asm.h b/arch/xtensa/variants/s6000/include/variant/tie-asm.h
new file mode 100644
index 000000000000..f02d0a3a2e20
--- /dev/null
+++ b/arch/xtensa/variants/s6000/include/variant/tie-asm.h
@@ -0,0 +1,304 @@
+/*
+ * This header file contains assembly-language definitions (assembly
+ * macros, etc.) for this specific Xtensa processor's TIE extensions
+ * and options. It is customized to this Xtensa processor configuration.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1999-2008 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_CORE_TIE_ASM_H
+#define _XTENSA_CORE_TIE_ASM_H
+
+/* Selection parameter values for save-area save/restore macros: */
+/* Option vs. TIE: */
+#define XTHAL_SAS_TIE 0x0001 /* custom extension or coprocessor */
+#define XTHAL_SAS_OPT 0x0002 /* optional (and not a coprocessor) */
+/* Whether used automatically by compiler: */
+#define XTHAL_SAS_NOCC 0x0004 /* not used by compiler w/o special opts/code */
+#define XTHAL_SAS_CC 0x0008 /* used by compiler without special opts/code */
+/* ABI handling across function calls: */
+#define XTHAL_SAS_CALR 0x0010 /* caller-saved */
+#define XTHAL_SAS_CALE 0x0020 /* callee-saved */
+#define XTHAL_SAS_GLOB 0x0040 /* global across function calls (in thread) */
+/* Misc */
+#define XTHAL_SAS_ALL 0xFFFF /* include all default NCP contents */
+
+
+
+/* Macro to save all non-coprocessor (extra) custom TIE and optional state
+ * (not including zero-overhead loop registers).
+ * Save area ptr (clobbered): ptr (16 byte aligned)
+ * Scratch regs (clobbered): at1..at4 (only first XCHAL_NCP_NUM_ATMPS needed)
+ */
+ .macro xchal_ncp_store ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL
+ xchal_sa_start \continue, \ofs
+ .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
+ xchal_sa_align \ptr, 0, 1024-4, 4, 4
+ rsr \at1, BR // boolean option
+ s32i \at1, \ptr, .Lxchal_ofs_ + 0
+ .set .Lxchal_ofs_, .Lxchal_ofs_ + 4
+ .endif
+ .endm // xchal_ncp_store
+
+/* Macro to save all non-coprocessor (extra) custom TIE and optional state
+ * (not including zero-overhead loop registers).
+ * Save area ptr (clobbered): ptr (16 byte aligned)
+ * Scratch regs (clobbered): at1..at4 (only first XCHAL_NCP_NUM_ATMPS needed)
+ */
+ .macro xchal_ncp_load ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL
+ xchal_sa_start \continue, \ofs
+ .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
+ xchal_sa_align \ptr, 0, 1024-4, 4, 4
+ l32i \at1, \ptr, .Lxchal_ofs_ + 0
+ wsr \at1, BR // boolean option
+ .set .Lxchal_ofs_, .Lxchal_ofs_ + 4
+ .endif
+ .endm // xchal_ncp_load
+
+
+
+#define XCHAL_NCP_NUM_ATMPS 1
+
+
+
+/* Macro to save the state of TIE coprocessor FPU.
+ * Save area ptr (clobbered): ptr (16 byte aligned)
+ * Scratch regs (clobbered): at1..at4 (only first XCHAL_CP0_NUM_ATMPS needed)
+ */
+#define xchal_cp_FPU_store xchal_cp0_store
+/* #define xchal_cp_FPU_store_a2 xchal_cp0_store a2 a3 a4 a5 a6 */
+ .macro xchal_cp0_store ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL
+ xchal_sa_start \continue, \ofs
+ .ifeq (XTHAL_SAS_TIE | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
+ xchal_sa_align \ptr, 0, 0, 1, 16
+ rur232 \at1 // FCR
+ s32i \at1, \ptr, 0
+ rur233 \at1 // FSR
+ s32i \at1, \ptr, 4
+ SSI f0, \ptr, 8
+ SSI f1, \ptr, 12
+ SSI f2, \ptr, 16
+ SSI f3, \ptr, 20
+ SSI f4, \ptr, 24
+ SSI f5, \ptr, 28
+ SSI f6, \ptr, 32
+ SSI f7, \ptr, 36
+ SSI f8, \ptr, 40
+ SSI f9, \ptr, 44
+ SSI f10, \ptr, 48
+ SSI f11, \ptr, 52
+ SSI f12, \ptr, 56
+ SSI f13, \ptr, 60
+ SSI f14, \ptr, 64
+ SSI f15, \ptr, 68
+ .set .Lxchal_ofs_, .Lxchal_ofs_ + 72
+ .endif
+ .endm // xchal_cp0_store
+
+/* Macro to restore the state of TIE coprocessor FPU.
+ * Save area ptr (clobbered): ptr (16 byte aligned)
+ * Scratch regs (clobbered): at1..at4 (only first XCHAL_CP0_NUM_ATMPS needed)
+ */
+#define xchal_cp_FPU_load xchal_cp0_load
+/* #define xchal_cp_FPU_load_a2 xchal_cp0_load a2 a3 a4 a5 a6 */
+ .macro xchal_cp0_load ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL
+ xchal_sa_start \continue, \ofs
+ .ifeq (XTHAL_SAS_TIE | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
+ xchal_sa_align \ptr, 0, 0, 1, 16
+ l32i \at1, \ptr, 0
+ wur232 \at1 // FCR
+ l32i \at1, \ptr, 4
+ wur233 \at1 // FSR
+ LSI f0, \ptr, 8
+ LSI f1, \ptr, 12
+ LSI f2, \ptr, 16
+ LSI f3, \ptr, 20
+ LSI f4, \ptr, 24
+ LSI f5, \ptr, 28
+ LSI f6, \ptr, 32
+ LSI f7, \ptr, 36
+ LSI f8, \ptr, 40
+ LSI f9, \ptr, 44
+ LSI f10, \ptr, 48
+ LSI f11, \ptr, 52
+ LSI f12, \ptr, 56
+ LSI f13, \ptr, 60
+ LSI f14, \ptr, 64
+ LSI f15, \ptr, 68
+ .set .Lxchal_ofs_, .Lxchal_ofs_ + 72
+ .endif
+ .endm // xchal_cp0_load
+
+#define XCHAL_CP0_NUM_ATMPS 1
+
+/* Macro to save the state of TIE coprocessor XAD.
+ * Save area ptr (clobbered): ptr (16 byte aligned)
+ * Scratch regs (clobbered): at1..at4 (only first XCHAL_CP6_NUM_ATMPS needed)
+ */
+#define xchal_cp_XAD_store xchal_cp6_store
+/* #define xchal_cp_XAD_store_a2 xchal_cp6_store a2 a3 a4 a5 a6 */
+ .macro xchal_cp6_store ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL
+ xchal_sa_start \continue, \ofs
+ .ifeq (XTHAL_SAS_TIE | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
+ xchal_sa_align \ptr, 0, 0, 1, 16
+ rur0 \at1 // LDCBHI
+ s32i \at1, \ptr, 0
+ rur1 \at1 // LDCBLO
+ s32i \at1, \ptr, 4
+ rur2 \at1 // STCBHI
+ s32i \at1, \ptr, 8
+ rur3 \at1 // STCBLO
+ s32i \at1, \ptr, 12
+ rur8 \at1 // LDBRBASE
+ s32i \at1, \ptr, 16
+ rur9 \at1 // LDBROFF
+ s32i \at1, \ptr, 20
+ rur10 \at1 // LDBRINC
+ s32i \at1, \ptr, 24
+ rur11 \at1 // STBRBASE
+ s32i \at1, \ptr, 28
+ rur12 \at1 // STBROFF
+ s32i \at1, \ptr, 32
+ rur13 \at1 // STBRINC
+ s32i \at1, \ptr, 36
+ rur24 \at1 // SCRATCH0
+ s32i \at1, \ptr, 40
+ rur25 \at1 // SCRATCH1
+ s32i \at1, \ptr, 44
+ rur26 \at1 // SCRATCH2
+ s32i \at1, \ptr, 48
+ rur27 \at1 // SCRATCH3
+ s32i \at1, \ptr, 52
+ WRAS128I wra0, \ptr, 64
+ WRAS128I wra1, \ptr, 80
+ WRAS128I wra2, \ptr, 96
+ WRAS128I wra3, \ptr, 112
+ WRAS128I wra4, \ptr, 128
+ WRAS128I wra5, \ptr, 144
+ WRAS128I wra6, \ptr, 160
+ WRAS128I wra7, \ptr, 176
+ WRAS128I wra8, \ptr, 192
+ WRAS128I wra9, \ptr, 208
+ WRAS128I wra10, \ptr, 224
+ WRAS128I wra11, \ptr, 240
+ WRAS128I wra12, \ptr, 256
+ WRAS128I wra13, \ptr, 272
+ WRAS128I wra14, \ptr, 288
+ WRAS128I wra15, \ptr, 304
+ WRBS128I wrb0, \ptr, 320
+ WRBS128I wrb1, \ptr, 336
+ WRBS128I wrb2, \ptr, 352
+ WRBS128I wrb3, \ptr, 368
+ WRBS128I wrb4, \ptr, 384
+ WRBS128I wrb5, \ptr, 400
+ WRBS128I wrb6, \ptr, 416
+ WRBS128I wrb7, \ptr, 432
+ WRBS128I wrb8, \ptr, 448
+ WRBS128I wrb9, \ptr, 464
+ WRBS128I wrb10, \ptr, 480
+ WRBS128I wrb11, \ptr, 496
+ WRBS128I wrb12, \ptr, 512
+ WRBS128I wrb13, \ptr, 528
+ WRBS128I wrb14, \ptr, 544
+ WRBS128I wrb15, \ptr, 560
+ .set .Lxchal_ofs_, .Lxchal_ofs_ + 576
+ .endif
+ .endm // xchal_cp6_store
+
+/* Macro to restore the state of TIE coprocessor XAD.
+ * Save area ptr (clobbered): ptr (16 byte aligned)
+ * Scratch regs (clobbered): at1..at4 (only first XCHAL_CP6_NUM_ATMPS needed)
+ */
+#define xchal_cp_XAD_load xchal_cp6_load
+/* #define xchal_cp_XAD_load_a2 xchal_cp6_load a2 a3 a4 a5 a6 */
+ .macro xchal_cp6_load ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL
+ xchal_sa_start \continue, \ofs
+ .ifeq (XTHAL_SAS_TIE | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
+ xchal_sa_align \ptr, 0, 0, 1, 16
+ l32i \at1, \ptr, 0
+ wur0 \at1 // LDCBHI
+ l32i \at1, \ptr, 4
+ wur1 \at1 // LDCBLO
+ l32i \at1, \ptr, 8
+ wur2 \at1 // STCBHI
+ l32i \at1, \ptr, 12
+ wur3 \at1 // STCBLO
+ l32i \at1, \ptr, 16
+ wur8 \at1 // LDBRBASE
+ l32i \at1, \ptr, 20
+ wur9 \at1 // LDBROFF
+ l32i \at1, \ptr, 24
+ wur10 \at1 // LDBRINC
+ l32i \at1, \ptr, 28
+ wur11 \at1 // STBRBASE
+ l32i \at1, \ptr, 32
+ wur12 \at1 // STBROFF
+ l32i \at1, \ptr, 36
+ wur13 \at1 // STBRINC
+ l32i \at1, \ptr, 40
+ wur24 \at1 // SCRATCH0
+ l32i \at1, \ptr, 44
+ wur25 \at1 // SCRATCH1
+ l32i \at1, \ptr, 48
+ wur26 \at1 // SCRATCH2
+ l32i \at1, \ptr, 52
+ wur27 \at1 // SCRATCH3
+ WRBL128I wrb0, \ptr, 320
+ WRBL128I wrb1, \ptr, 336
+ WRBL128I wrb2, \ptr, 352
+ WRBL128I wrb3, \ptr, 368
+ WRBL128I wrb4, \ptr, 384
+ WRBL128I wrb5, \ptr, 400
+ WRBL128I wrb6, \ptr, 416
+ WRBL128I wrb7, \ptr, 432
+ WRBL128I wrb8, \ptr, 448
+ WRBL128I wrb9, \ptr, 464
+ WRBL128I wrb10, \ptr, 480
+ WRBL128I wrb11, \ptr, 496
+ WRBL128I wrb12, \ptr, 512
+ WRBL128I wrb13, \ptr, 528
+ WRBL128I wrb14, \ptr, 544
+ WRBL128I wrb15, \ptr, 560
+ WRAL128I wra0, \ptr, 64
+ WRAL128I wra1, \ptr, 80
+ WRAL128I wra2, \ptr, 96
+ WRAL128I wra3, \ptr, 112
+ WRAL128I wra4, \ptr, 128
+ WRAL128I wra5, \ptr, 144
+ WRAL128I wra6, \ptr, 160
+ WRAL128I wra7, \ptr, 176
+ WRAL128I wra8, \ptr, 192
+ WRAL128I wra9, \ptr, 208
+ WRAL128I wra10, \ptr, 224
+ WRAL128I wra11, \ptr, 240
+ WRAL128I wra12, \ptr, 256
+ WRAL128I wra13, \ptr, 272
+ WRAL128I wra14, \ptr, 288
+ WRAL128I wra15, \ptr, 304
+ .set .Lxchal_ofs_, .Lxchal_ofs_ + 576
+ .endif
+ .endm // xchal_cp6_load
+
+#define XCHAL_CP6_NUM_ATMPS 1
+#define XCHAL_SA_NUM_ATMPS 1
+
+ /* Empty macros for unconfigured coprocessors: */
+ .macro xchal_cp1_store p a b c d continue=0 ofs=-1 select=-1 ; .endm
+ .macro xchal_cp1_load p a b c d continue=0 ofs=-1 select=-1 ; .endm
+ .macro xchal_cp2_store p a b c d continue=0 ofs=-1 select=-1 ; .endm
+ .macro xchal_cp2_load p a b c d continue=0 ofs=-1 select=-1 ; .endm
+ .macro xchal_cp3_store p a b c d continue=0 ofs=-1 select=-1 ; .endm
+ .macro xchal_cp3_load p a b c d continue=0 ofs=-1 select=-1 ; .endm
+ .macro xchal_cp4_store p a b c d continue=0 ofs=-1 select=-1 ; .endm
+ .macro xchal_cp4_load p a b c d continue=0 ofs=-1 select=-1 ; .endm
+ .macro xchal_cp5_store p a b c d continue=0 ofs=-1 select=-1 ; .endm
+ .macro xchal_cp5_load p a b c d continue=0 ofs=-1 select=-1 ; .endm
+ .macro xchal_cp7_store p a b c d continue=0 ofs=-1 select=-1 ; .endm
+ .macro xchal_cp7_load p a b c d continue=0 ofs=-1 select=-1 ; .endm
+
+#endif /*_XTENSA_CORE_TIE_ASM_H*/
+
diff --git a/arch/xtensa/variants/s6000/include/variant/tie.h b/arch/xtensa/variants/s6000/include/variant/tie.h
new file mode 100644
index 000000000000..be7ea843d5df
--- /dev/null
+++ b/arch/xtensa/variants/s6000/include/variant/tie.h
@@ -0,0 +1,191 @@
+/*
+ * This header file describes this specific Xtensa processor's TIE extensions
+ * that extend basic Xtensa core functionality. It is customized to this
+ * Xtensa processor configuration.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1999-2008 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_CORE_TIE_H
+#define _XTENSA_CORE_TIE_H
+
+#define XCHAL_CP_NUM 2 /* number of coprocessors */
+#define XCHAL_CP_MAX 7 /* max CP ID + 1 (0 if none) */
+#define XCHAL_CP_MASK 0x41 /* bitmask of all CPs by ID */
+#define XCHAL_CP_PORT_MASK 0x00 /* bitmask of only port CPs */
+
+/* Basic parameters of each coprocessor: */
+#define XCHAL_CP0_NAME "FPU"
+#define XCHAL_CP0_IDENT FPU
+#define XCHAL_CP0_SA_SIZE 72 /* size of state save area */
+#define XCHAL_CP0_SA_ALIGN 4 /* min alignment of save area */
+#define XCHAL_CP_ID_FPU 0 /* coprocessor ID (0..7) */
+#define XCHAL_CP6_NAME "XAD"
+#define XCHAL_CP6_IDENT XAD
+#define XCHAL_CP6_SA_SIZE 576 /* size of state save area */
+#define XCHAL_CP6_SA_ALIGN 16 /* min alignment of save area */
+#define XCHAL_CP_ID_XAD 6 /* coprocessor ID (0..7) */
+
+/* Filler info for unassigned coprocessors, to simplify arrays etc: */
+#define XCHAL_CP1_SA_SIZE 0
+#define XCHAL_CP1_SA_ALIGN 1
+#define XCHAL_CP2_SA_SIZE 0
+#define XCHAL_CP2_SA_ALIGN 1
+#define XCHAL_CP3_SA_SIZE 0
+#define XCHAL_CP3_SA_ALIGN 1
+#define XCHAL_CP4_SA_SIZE 0
+#define XCHAL_CP4_SA_ALIGN 1
+#define XCHAL_CP5_SA_SIZE 0
+#define XCHAL_CP5_SA_ALIGN 1
+#define XCHAL_CP7_SA_SIZE 0
+#define XCHAL_CP7_SA_ALIGN 1
+
+/* Save area for non-coprocessor optional and custom (TIE) state: */
+#define XCHAL_NCP_SA_SIZE 4
+#define XCHAL_NCP_SA_ALIGN 4
+
+/* Total save area for optional and custom state (NCP + CPn): */
+#define XCHAL_TOTAL_SA_SIZE 672 /* with 16-byte align padding */
+#define XCHAL_TOTAL_SA_ALIGN 16 /* actual minimum alignment */
+
+/*
+ * Detailed contents of save areas.
+ * NOTE: caller must define the XCHAL_SA_REG macro (not defined here)
+ * before expanding the XCHAL_xxx_SA_LIST() macros.
+ *
+ * XCHAL_SA_REG(s,ccused,abikind,kind,opt,name,galign,align,asize,
+ * dbnum,base,regnum,bitsz,gapsz,reset,x...)
+ *
+ * s = passed from XCHAL_*_LIST(s), eg. to select how to expand
+ * ccused = set if used by compiler without special options or code
+ * abikind = 0 (caller-saved), 1 (callee-saved), or 2 (thread-global)
+ * kind = 0 (special reg), 1 (TIE user reg), or 2 (TIE regfile reg)
+ * opt = 0 (custom TIE extension or coprocessor), or 1 (optional reg)
+ * name = lowercase reg name (no quotes)
+ * galign = group byte alignment (power of 2) (galign >= align)
+ * align = register byte alignment (power of 2)
+ * asize = allocated size in bytes (asize*8 == bitsz + gapsz + padsz)
+ * (not including any pad bytes required to galign this or next reg)
+ * dbnum = unique target number f/debug (see <xtensa-libdb-macros.h>)
+ * base = reg shortname w/o index (or sr=special, ur=TIE user reg)
+ * regnum = reg index in regfile, or special/TIE-user reg number
+ * bitsz = number of significant bits (regfile width, or ur/sr mask bits)
+ * gapsz = intervening bits, if bitsz bits not stored contiguously
+ * (padsz = pad bits at end [TIE regfile] or at msbits [ur,sr] of asize)
+ * reset = register reset value (or 0 if undefined at reset)
+ * x = reserved for future use (0 until then)
+ *
+ * To filter out certain registers, e.g. to expand only the non-global
+ * registers used by the compiler, you can do something like this:
+ *
+ * #define XCHAL_SA_REG(s,ccused,p...) SELCC##ccused(p)
+ * #define SELCC0(p...)
+ * #define SELCC1(abikind,p...) SELAK##abikind(p)
+ * #define SELAK0(p...) REG(p)
+ * #define SELAK1(p...) REG(p)
+ * #define SELAK2(p...)
+ * #define REG(kind,tie,name,galn,aln,asz,csz,dbnum,base,rnum,bsz,rst,x...) \
+ * ...what you want to expand...
+ */
+
+#define XCHAL_NCP_SA_NUM 1
+#define XCHAL_NCP_SA_LIST(s) \
+ XCHAL_SA_REG(s,0,0,0,1, br, 4, 4, 4,0x0204, sr,4 , 16,0,0,0)
+
+#define XCHAL_CP0_SA_NUM 18
+#define XCHAL_CP0_SA_LIST(s) \
+ XCHAL_SA_REG(s,0,0,1,0, fcr, 4, 4, 4,0x03E8, ur,232, 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,1,0, fsr, 4, 4, 4,0x03E9, ur,233, 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, f0, 4, 4, 4,0x0030, f,0 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, f1, 4, 4, 4,0x0031, f,1 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, f2, 4, 4, 4,0x0032, f,2 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, f3, 4, 4, 4,0x0033, f,3 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, f4, 4, 4, 4,0x0034, f,4 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, f5, 4, 4, 4,0x0035, f,5 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, f6, 4, 4, 4,0x0036, f,6 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, f7, 4, 4, 4,0x0037, f,7 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, f8, 4, 4, 4,0x0038, f,8 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, f9, 4, 4, 4,0x0039, f,9 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, f10, 4, 4, 4,0x003A, f,10 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, f11, 4, 4, 4,0x003B, f,11 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, f12, 4, 4, 4,0x003C, f,12 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, f13, 4, 4, 4,0x003D, f,13 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, f14, 4, 4, 4,0x003E, f,14 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, f15, 4, 4, 4,0x003F, f,15 , 32,0,0,0)
+
+#define XCHAL_CP1_SA_NUM 0
+#define XCHAL_CP1_SA_LIST(s) /* empty */
+
+#define XCHAL_CP2_SA_NUM 0
+#define XCHAL_CP2_SA_LIST(s) /* empty */
+
+#define XCHAL_CP3_SA_NUM 0
+#define XCHAL_CP3_SA_LIST(s) /* empty */
+
+#define XCHAL_CP4_SA_NUM 0
+#define XCHAL_CP4_SA_LIST(s) /* empty */
+
+#define XCHAL_CP5_SA_NUM 0
+#define XCHAL_CP5_SA_LIST(s) /* empty */
+
+#define XCHAL_CP6_SA_NUM 46
+#define XCHAL_CP6_SA_LIST(s) \
+ XCHAL_SA_REG(s,0,0,1,0, ldcbhi,16, 4, 4,0x0300, ur,0 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,1,0, ldcblo, 4, 4, 4,0x0301, ur,1 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,1,0, stcbhi, 4, 4, 4,0x0302, ur,2 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,1,0, stcblo, 4, 4, 4,0x0303, ur,3 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,1,0, ldbrbase, 4, 4, 4,0x0308, ur,8 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,1,0, ldbroff, 4, 4, 4,0x0309, ur,9 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,1,0, ldbrinc, 4, 4, 4,0x030A, ur,10 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,1,0, stbrbase, 4, 4, 4,0x030B, ur,11 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,1,0, stbroff, 4, 4, 4,0x030C, ur,12 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,1,0, stbrinc, 4, 4, 4,0x030D, ur,13 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,1,0, scratch0, 4, 4, 4,0x0318, ur,24 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,1,0, scratch1, 4, 4, 4,0x0319, ur,25 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,1,0, scratch2, 4, 4, 4,0x031A, ur,26 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,1,0, scratch3, 4, 4, 4,0x031B, ur,27 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wra0,16,16,16,0x1010, wra,0 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wra1,16,16,16,0x1011, wra,1 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wra2,16,16,16,0x1012, wra,2 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wra3,16,16,16,0x1013, wra,3 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wra4,16,16,16,0x1014, wra,4 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wra5,16,16,16,0x1015, wra,5 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wra6,16,16,16,0x1016, wra,6 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wra7,16,16,16,0x1017, wra,7 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wra8,16,16,16,0x1018, wra,8 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wra9,16,16,16,0x1019, wra,9 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wra10,16,16,16,0x101A, wra,10 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wra11,16,16,16,0x101B, wra,11 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wra12,16,16,16,0x101C, wra,12 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wra13,16,16,16,0x101D, wra,13 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wra14,16,16,16,0x101E, wra,14 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wra15,16,16,16,0x101F, wra,15 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wrb0,16,16,16,0x1020, wrb,0 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wrb1,16,16,16,0x1021, wrb,1 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wrb2,16,16,16,0x1022, wrb,2 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wrb3,16,16,16,0x1023, wrb,3 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wrb4,16,16,16,0x1024, wrb,4 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wrb5,16,16,16,0x1025, wrb,5 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wrb6,16,16,16,0x1026, wrb,6 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wrb7,16,16,16,0x1027, wrb,7 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wrb8,16,16,16,0x1028, wrb,8 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wrb9,16,16,16,0x1029, wrb,9 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wrb10,16,16,16,0x102A, wrb,10 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wrb11,16,16,16,0x102B, wrb,11 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wrb12,16,16,16,0x102C, wrb,12 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wrb13,16,16,16,0x102D, wrb,13 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wrb14,16,16,16,0x102E, wrb,14 ,128,0,0,0) \
+ XCHAL_SA_REG(s,0,0,2,0, wrb15,16,16,16,0x102F, wrb,15 ,128,0,0,0)
+
+#define XCHAL_CP7_SA_NUM 0
+#define XCHAL_CP7_SA_LIST(s) /* empty */
+
+/* Byte length of instruction from its first nibble (op0 field), per FLIX. */
+#define XCHAL_OP0_FORMAT_LENGTHS 3,3,3,3,3,3,3,3,2,2,2,2,2,2,8,8
+
+#endif /*_XTENSA_CORE_TIE_H*/
+
diff --git a/arch/xtensa/variants/s6000/irq.c b/arch/xtensa/variants/s6000/irq.c
new file mode 100644
index 000000000000..6651e3285fcf
--- /dev/null
+++ b/arch/xtensa/variants/s6000/irq.c
@@ -0,0 +1,74 @@
+/*
+ * s6000 irq crossbar
+ *
+ * Copyright (c) 2009 emlix GmbH
+ * Authors: Johannes Weiner <jw@emlix.com>
+ * Oskar Schirmer <os@emlix.com>
+ */
+#include <linux/io.h>
+#include <asm/irq.h>
+#include <variant/hardware.h>
+
+/* S6_REG_INTC */
+#define INTC_STATUS 0x000
+#define INTC_RAW 0x010
+#define INTC_STATUS_AG 0x100
+#define INTC_CFG(n) (0x200 + 4 * (n))
+
+/*
+ * The s6000 has a crossbar that multiplexes interrupt output lines
+ * from the peripherals to input lines on the xtensa core.
+ *
+ * We leave the mapping decisions to the platform as it depends on the
+ * actually connected peripherals which distribution makes sense.
+ */
+extern const signed char *platform_irq_mappings[NR_IRQS];
+
+static unsigned long scp_to_intc_enable[] = {
+#define TO_INTC_ENABLE(n) (((n) << 1) + 1)
+ TO_INTC_ENABLE(0),
+ TO_INTC_ENABLE(1),
+ TO_INTC_ENABLE(2),
+ TO_INTC_ENABLE(3),
+ TO_INTC_ENABLE(4),
+ TO_INTC_ENABLE(5),
+ TO_INTC_ENABLE(6),
+ TO_INTC_ENABLE(7),
+ TO_INTC_ENABLE(8),
+ TO_INTC_ENABLE(9),
+ TO_INTC_ENABLE(10),
+ TO_INTC_ENABLE(11),
+ TO_INTC_ENABLE(12),
+ -1,
+ -1,
+ TO_INTC_ENABLE(13),
+ -1,
+ TO_INTC_ENABLE(14),
+ -1,
+ TO_INTC_ENABLE(15),
+#undef TO_INTC_ENABLE
+};
+
+static void irq_set(unsigned int irq, int enable)
+{
+ unsigned long en;
+ const signed char *m = platform_irq_mappings[irq];
+
+ if (!m)
+ return;
+ en = enable ? scp_to_intc_enable[irq] : 0;
+ while (*m >= 0) {
+ writel(en, S6_REG_INTC + INTC_CFG(*m));
+ m++;
+ }
+}
+
+void variant_irq_enable(unsigned int irq)
+{
+ irq_set(irq, 1);
+}
+
+void variant_irq_disable(unsigned int irq)
+{
+ irq_set(irq, 0);
+}