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Message-ID: <1354723742-6195-38-git-send-email-james.hogan@imgtec.com>
Date: Wed, 5 Dec 2012 16:08:55 +0000
From: James Hogan <james.hogan@...tec.com>
To: <linux-arch@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: Arnd Bergmann <arnd@...db.de>, James Hogan <james.hogan@...tec.com>
Subject: [PATCH v2 37/44] metag: Build infrastructure
Add metag build infrastructure.
TODO: use generic CMDLINE Kconfig symbols
Signed-off-by: James Hogan <james.hogan@...tec.com>
---
arch/metag/Kconfig | 299 ++++++++++++++++++++++++++++++++
arch/metag/Kconfig.debug | 40 +++++
arch/metag/Kconfig.soc | 55 ++++++
arch/metag/Makefile | 87 +++++++++
arch/metag/boot/Makefile | 68 +++++++
arch/metag/configs/meta1_defconfig | 39 ++++
arch/metag/configs/meta2_defconfig | 40 +++++
arch/metag/configs/meta2_smp_defconfig | 41 +++++
arch/metag/include/asm/Kbuild | 54 ++++++
arch/metag/include/uapi/asm/Kbuild | 13 ++
arch/metag/kernel/.gitignore | 1 +
arch/metag/kernel/Makefile | 38 ++++
arch/metag/kernel/asm-offsets.c | 14 ++
arch/metag/kernel/metag_ksyms.c | 74 ++++++++
arch/metag/kernel/vmlinux.lds.S | 71 ++++++++
arch/metag/lib/Makefile | 22 +++
arch/metag/mm/Kconfig | 153 ++++++++++++++++
arch/metag/mm/Makefile | 18 ++
arch/metag/tbx/Makefile | 22 +++
19 files changed, 1149 insertions(+), 0 deletions(-)
create mode 100644 arch/metag/Kconfig
create mode 100644 arch/metag/Kconfig.debug
create mode 100644 arch/metag/Kconfig.soc
create mode 100644 arch/metag/Makefile
create mode 100644 arch/metag/boot/Makefile
create mode 100644 arch/metag/configs/meta1_defconfig
create mode 100644 arch/metag/configs/meta2_defconfig
create mode 100644 arch/metag/configs/meta2_smp_defconfig
create mode 100644 arch/metag/include/asm/Kbuild
create mode 100644 arch/metag/include/uapi/asm/Kbuild
create mode 100644 arch/metag/kernel/.gitignore
create mode 100644 arch/metag/kernel/Makefile
create mode 100644 arch/metag/kernel/asm-offsets.c
create mode 100644 arch/metag/kernel/metag_ksyms.c
create mode 100644 arch/metag/kernel/vmlinux.lds.S
create mode 100644 arch/metag/lib/Makefile
create mode 100644 arch/metag/mm/Kconfig
create mode 100644 arch/metag/mm/Makefile
create mode 100644 arch/metag/tbx/Makefile
diff --git a/arch/metag/Kconfig b/arch/metag/Kconfig
new file mode 100644
index 0000000..60575ee
--- /dev/null
+++ b/arch/metag/Kconfig
@@ -0,0 +1,299 @@
+config SYMBOL_PREFIX
+ string
+ default "_"
+
+config METAG
+ def_bool y
+ select EMBEDDED
+ select GENERIC_ATOMIC64
+ select GENERIC_CLOCKEVENTS
+ select GENERIC_IRQ_SHOW
+ select GENERIC_SMP_IDLE_THREAD
+ select HAVE_64BIT_ALIGNED_STRUCT
+ select HAVE_ARCH_TRACEHOOK
+ select HAVE_DEBUG_KMEMLEAK
+ select HAVE_GENERIC_HARDIRQS
+ select HAVE_IRQ_WORK
+ select HAVE_KERNEL_BZIP2
+ select HAVE_KERNEL_GZIP
+ select HAVE_KERNEL_LZO
+ select HAVE_KERNEL_XZ
+ select HAVE_MEMBLOCK
+ select HAVE_MEMBLOCK_NODE_MAP
+ select HAVE_MOD_ARCH_SPECIFIC
+ select HAVE_SYSCALL_TRACEPOINTS
+ select IRQ_DOMAIN
+ select MODULES_USE_ELF_RELA
+ select OF
+ select OF_EARLY_FLATTREE
+
+config ARCH_NO_VIRT_TO_BUS
+ def_bool y
+
+config STACKTRACE_SUPPORT
+ def_bool y
+
+config LOCKDEP_SUPPORT
+ def_bool y
+
+config HAVE_LATENCYTOP_SUPPORT
+ def_bool y
+
+config RWSEM_GENERIC_SPINLOCK
+ def_bool y
+
+config RWSEM_XCHGADD_ALGORITHM
+ bool
+
+config GENERIC_HWEIGHT
+ def_bool y
+
+config GENERIC_CALIBRATE_DELAY
+ def_bool y
+
+config GENERIC_GPIO
+ def_bool n
+
+config NO_IOPORT
+ def_bool y
+
+source "init/Kconfig"
+
+source "kernel/Kconfig.freezer"
+
+menu "Processor type and features"
+
+config MMU
+ def_bool y
+
+config STACK_GROWSUP
+ def_bool y
+
+config HOTPLUG_CPU
+ bool "Enable CPU hotplug support"
+ depends on SMP
+ help
+ Say Y here to allow turning CPUs off and on. CPUs can be
+ controlled through /sys/devices/system/cpu.
+
+ Say N if you want to disable CPU hotplug.
+
+config HIGHMEM
+ bool "High Memory Support"
+ help
+ The address space of Meta processors is only 4 Gigabytes large
+ and it has to accommodate user address space, kernel address
+ space as well as some memory mapped IO. That means that, if you
+ have a large amount of physical memory and/or IO, not all of the
+ memory can be "permanently mapped" by the kernel. The physical
+ memory that is not permanently mapped is called "high memory".
+
+ Depending on the selected kernel/user memory split, minimum
+ vmalloc space and actual amount of RAM, you may not need this
+ option which should result in a slightly faster kernel.
+
+ If unsure, say n.
+
+source "arch/metag/mm/Kconfig"
+
+source "arch/metag/Kconfig.soc"
+
+config METAG_META12
+ bool
+ help
+ Select this from the SoC config symbol to indicate that it contains a
+ Meta 1.2 core.
+
+config METAG_META21
+ bool
+ help
+ Select this from the SoC config symbol to indicate that it contains a
+ Meta 2.1 core.
+
+config SMP
+ bool "Symmetric multi-processing support"
+ depends on METAG_META21
+ select USE_GENERIC_SMP_HELPERS
+ help
+ This enables support for systems with more than one thread running
+ Linux. If you have a system with only one thread running Linux,
+ say N. Otherwise, say Y.
+
+config NR_CPUS
+ int "Maximum number of CPUs (2-4)" if SMP
+ range 2 4 if SMP
+ default "1" if !SMP
+ default "4" if SMP
+
+config METAG_SMP_WRITE_REORDERING
+ bool
+ help
+ This attempts to prevent cache-memory incoherence due to external
+ reordering of writes from different hardware threads when SMP is
+ enabled. It adds fences (system event 0) to smp_mb and smp_rmb in an
+ attempt to catch some of the cases, and also before writes to shared
+ memory in LOCK1 protected atomics and spinlocks.
+ This will not completely prevent cache incoherency on affected cores.
+
+config METAG_LNKGET_AROUND_CACHE
+ bool
+ depends on METAG_META21
+ help
+ This indicates that the LNKGET/LNKSET instructions go around the
+ cache, which requires some extra cache flushes when the memory needs
+ to be accessed by normal GET/SET instructions too.
+
+choice
+ prompt "Atomicity primitive"
+ default METAG_ATOMICITY_LNKGET
+ help
+ This option selects the mechanism for performing atomic operations.
+
+config METAG_ATOMICITY_IRQSOFF
+ depends on !SMP
+ bool "irqsoff"
+ help
+ This option disables interrupts to achieve atomicity. This mechanism
+ is not SMP-safe.
+
+config METAG_ATOMICITY_LNKGET
+ depends on METAG_META21
+ bool "lnkget/lnkset"
+ help
+ This option uses the LNKGET and LNKSET instructions to achieve
+ atomicity. LNKGET/LNKSET are load-link/store-conditional instructions.
+ Choose this option if your system requires low latency.
+
+config METAG_ATOMICITY_LOCK1
+ depends on SMP
+ bool "lock1"
+ help
+ This option uses the LOCK1 instruction for atomicity. This is mainly
+ provided as a debugging aid if the lnkget/lnkset atomicity primitive
+ isn't working properly.
+
+endchoice
+
+config METAG_FPU
+ bool "FPU Support"
+ depends on METAG_META21
+ default y
+ help
+ This option allows processes to use FPU hardware available with this
+ CPU. If this option is not enabled FPU registers will not be saved
+ and restored on context-switch.
+
+ If you plan on running programs which are compiled to use hard floats
+ say Y here.
+
+config METAG_DSP
+ bool "DSP Support"
+ help
+ This option allows processes to use DSP hardware available
+ with this CPU. If this option is not enabled DSP registers
+ will not be saved and restored on context-switch.
+
+ If you plan on running DSP programs say Y here.
+
+config METAG_PERFCOUNTER_IRQS
+ bool "PerfCounters interrupt support"
+ depends on METAG_META21
+ help
+ This option enables using interrupts to collect information from
+ Performance Counters. This option is supported in new META21
+ (starting from HTP265).
+
+ When disabled, Performance Counters information will be collected
+ based on Timer Interrupt.
+
+menu "Boot options"
+
+config METAG_BUILTIN_DTB
+ bool "Embed DTB in kernel image"
+ default y
+ help
+ Embeds a device tree binary in the kernel image.
+
+config METAG_BUILTIN_DTB_NAME
+ string "Built in DTB"
+ depends on METAG_BUILTIN_DTB
+ help
+ Set the name of the DTB to embed (leave blank to pick one
+ automatically based on kernel configuration).
+
+config METAG_CMDLINE_BOOL
+ bool "Built-in kernel command line"
+ help
+ Allow for specifying boot arguments to the kernel at
+ build time. On some systems (e.g. embedded ones), it is
+ necessary or convenient to provide some or all of the
+ kernel boot arguments with the kernel itself (that is,
+ to not rely on the boot loader to provide them.)
+
+ To compile command line arguments into the kernel,
+ set this option to 'Y', then fill in the
+ the boot arguments in CONFIG_METAG_CMDLINE.
+
+ Systems with fully functional boot loaders (i.e. non-embedded)
+ should leave this option set to 'N'.
+
+config METAG_CMDLINE
+ string "Built-in kernel command string"
+ depends on METAG_CMDLINE_BOOL
+ default ""
+ help
+ Enter arguments here that should be compiled into the kernel
+ image and used at boot time. If the boot loader provides a
+ command line at boot time, it is appended to this string to
+ form the full kernel command line, when the system boots.
+
+ However, you can use the CONFIG_METAG_CMDLINE_OVERRIDE option to
+ change this behavior.
+
+ In most cases, the command line (whether built-in or provided
+ by the boot loader) should specify the device for the root
+ file system.
+
+config METAG_CMDLINE_OVERRIDE
+ bool "Built-in command line overrides boot loader arguments"
+ depends on METAG_CMDLINE_BOOL
+ help
+ Set this option to 'Y' to have the kernel ignore the boot loader
+ command line, and use ONLY the built-in command line.
+
+ This is used to work around broken boot loaders. This should
+ be set to 'N' under normal conditions.
+
+endmenu
+
+source "kernel/Kconfig.preempt"
+
+source kernel/Kconfig.hz
+
+endmenu
+
+menu "Power management options"
+
+source kernel/power/Kconfig
+
+endmenu
+
+menu "Executable file formats"
+
+source "fs/Kconfig.binfmt"
+
+endmenu
+
+source "net/Kconfig"
+
+source "drivers/Kconfig"
+
+source "fs/Kconfig"
+
+source "arch/metag/Kconfig.debug"
+
+source "security/Kconfig"
+
+source "crypto/Kconfig"
+
+source "lib/Kconfig"
diff --git a/arch/metag/Kconfig.debug b/arch/metag/Kconfig.debug
new file mode 100644
index 0000000..e45bbf6
--- /dev/null
+++ b/arch/metag/Kconfig.debug
@@ -0,0 +1,40 @@
+menu "Kernel hacking"
+
+config TRACE_IRQFLAGS_SUPPORT
+ bool
+ default y
+
+source "lib/Kconfig.debug"
+
+config DEBUG_STACKOVERFLOW
+ bool "Check for stack overflows"
+ depends on DEBUG_KERNEL
+ help
+ This option will cause messages to be printed if free stack space
+ drops below a certain limit.
+
+config 4KSTACKS
+ bool "Use 4Kb for kernel stacks instead of 8Kb"
+ depends on DEBUG_KERNEL
+ help
+ If you say Y here the kernel will use a 4Kb stacksize for the
+ kernel stack attached to each process/thread. This facilitates
+ running more threads on a system and also reduces the pressure
+ on the VM subsystem for higher order allocations. This option
+ will also use IRQ stacks to compensate for the reduced stackspace.
+
+config METAG_FUNCTION_TRACE
+ bool "Output Meta real-time trace data for function entry/exit"
+ help
+ If you say Y here the kernel will use the Meta hardware trace
+ unit to output information about function entry and exit that
+ can be used by a debugger for profiling and call-graphs.
+
+config METAG_POISON_CATCH_BUFFERS
+ bool "Poison catch buffer contents on kernel entry"
+ help
+ If you say Y here the kernel will write poison data to the
+ catch buffer registers on kernel entry. This will make any
+ problem with catch buffer handling much more apparent.
+
+endmenu
diff --git a/arch/metag/Kconfig.soc b/arch/metag/Kconfig.soc
new file mode 100644
index 0000000..ec079cf
--- /dev/null
+++ b/arch/metag/Kconfig.soc
@@ -0,0 +1,55 @@
+choice
+ prompt "SoC Type"
+ default META21_FPGA
+
+config META12_FPGA
+ bool "Meta 1.2 FPGA"
+ select METAG_META12
+ help
+ This is a Meta 1.2 FPGA bitstream, just a bare CPU.
+
+config META21_FPGA
+ bool "Meta 2.1 FPGA"
+ select METAG_META21
+ help
+ This is a Meta 2.1 FPGA bitstream, just a bare CPU.
+
+endchoice
+
+menu "SoC configuration"
+
+if METAG_META21
+
+# Meta 2.x specific options
+
+config METAG_META21_MMU
+ bool "Meta 2.x MMU mode"
+ default y
+ help
+ Use the Meta 2.x MMU in extended mode.
+
+config METAG_UNALIGNED
+ bool "Meta 2.x unaligned access checking"
+ default y
+ help
+ All memory accesses will be checked for alignment and an exception
+ raised on unaligned accesses. This feature does cost performance
+ but without it there will be no notification of this type of error.
+
+config METAG_USER_TCM
+ bool "Meta on-chip memory support for userland"
+ select GENERIC_ALLOCATOR
+ default y
+ help
+ Allow the on-chip memories of Meta SoCs to be used by user
+ applications.
+
+endif
+
+config METAG_HALT_ON_PANIC
+ bool "Halt the core on panic"
+ help
+ Halt the core when a panic occurs. This is useful when running
+ pre-production silicon or in an FPGA environment.
+
+endmenu
diff --git a/arch/metag/Makefile b/arch/metag/Makefile
new file mode 100644
index 0000000..d455140
--- /dev/null
+++ b/arch/metag/Makefile
@@ -0,0 +1,87 @@
+#
+# metag/Makefile
+#
+# This file is included by the global makefile so that you can add your own
+# architecture-specific flags and dependencies. Remember to do have actions
+# for "archclean" cleaning up for this architecture.
+#
+# 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) 1994 by Linus Torvalds
+# 2007,2008,2012 by Imagination Technologies Ltd.
+#
+
+LDFLAGS :=
+OBJCOPYFLAGS := -O binary -R .note -R .comment -S
+
+checkflags-$(CONFIG_METAG_META12) += -DMETAC_1_2
+checkflags-$(CONFIG_METAG_META21) += -DMETAC_2_1
+CHECKFLAGS += -D__metag__ $(checkflags-y)
+
+KBUILD_DEFCONFIG := meta2_defconfig
+
+sflags-$(CONFIG_METAG_META12) += -mmetac=1.2
+ifeq ($(CONFIG_METAG_META12),y)
+# Only use TBI API 1.4 if DSP is enabled for META12 cores
+sflags-$(CONFIG_METAG_DSP) += -DTBI_1_4
+endif
+sflags-$(CONFIG_METAG_META21) += -mmetac=2.1 -DTBI_1_4
+
+cflags-$(CONFIG_METAG_FUNCTION_TRACE) += -mhwtrace-leaf -mhwtrace-retpc
+cflags-$(CONFIG_METAG_META21) += -mextensions=bex
+
+KBUILD_CFLAGS += -pipe
+KBUILD_CFLAGS += -ffunction-sections
+
+KBUILD_CFLAGS += $(sflags-y) $(cflags-y)
+KBUILD_AFLAGS += $(sflags-y)
+
+LDFLAGS_vmlinux := $(ldflags-y)
+
+head-y := arch/metag/kernel/head.o
+
+core-y += arch/metag/boot/dtb/
+core-y += arch/metag/kernel/
+core-y += arch/metag/mm/
+
+libs-y += arch/metag/lib/
+libs-y += arch/metag/tbx/
+
+boot := arch/metag/boot
+
+boot_targets += uImage
+boot_targets += uImage.gz
+boot_targets += uImage.bz2
+boot_targets += uImage.xz
+boot_targets += uImage.lzo
+boot_targets += uImage.bin
+boot_targets += vmlinux.bin
+
+PHONY += $(boot_targets)
+
+all: vmlinux.bin
+
+$(boot_targets): vmlinux
+ $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
+
+%.dtb %.dtb.S %.dtb.o:
+ $(Q)$(MAKE) $(build)=$(boot)/dtb $(boot)/dtb/$@
+
+dtbs:
+ $(Q)$(MAKE) $(build)=$(boot)/dtb $(boot)/dtb/$@
+
+archclean:
+ $(Q)$(MAKE) $(clean)=$(boot)
+
+define archhelp
+ echo '* vmlinux.bin - Binary kernel image (arch/$(ARCH)/boot/vmlinux.bin)'
+ @echo ' uImage - Alias to bootable U-Boot image'
+ @echo ' uImage.bin - Kernel-only image for U-Boot (bin)'
+ @echo ' uImage.gz - Kernel-only image for U-Boot (gzip)'
+ @echo ' uImage.bz2 - Kernel-only image for U-Boot (bzip2)'
+ @echo ' uImage.xz - Kernel-only image for U-Boot (xz)'
+ @echo ' uImage.lzo - Kernel-only image for U-Boot (lzo)'
+ @echo ' dtbs - Build device tree blobs for enabled boards'
+endef
diff --git a/arch/metag/boot/Makefile b/arch/metag/boot/Makefile
new file mode 100644
index 0000000..5a1f88c
--- /dev/null
+++ b/arch/metag/boot/Makefile
@@ -0,0 +1,68 @@
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License. See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+# Copyright (C) 2007,2012 Imagination Technologies Ltd.
+#
+
+suffix-y := bin
+suffix-$(CONFIG_KERNEL_GZIP) := gz
+suffix-$(CONFIG_KERNEL_BZIP2) := bz2
+suffix-$(CONFIG_KERNEL_XZ) := xz
+suffix-$(CONFIG_KERNEL_LZO) := lzo
+
+targets += vmlinux.bin
+targets += uImage
+targets += uImage.gz
+targets += uImage.bz2
+targets += uImage.xz
+targets += uImage.lzo
+targets += uImage.bin
+
+extra-y += vmlinux.bin
+extra-y += vmlinux.bin.gz
+extra-y += vmlinux.bin.bz2
+extra-y += vmlinux.bin.xz
+extra-y += vmlinux.bin.lzo
+
+UIMAGE_LOADADDR = $(CONFIG_PAGE_OFFSET)
+
+ifeq ($(CONFIG_FUNCTION_TRACER),y)
+orig_cflags := $(KBUILD_CFLAGS)
+KBUILD_CFLAGS = $(subst -pg, , $(orig_cflags))
+endif
+
+$(obj)/vmlinux.bin: vmlinux FORCE
+ $(call if_changed,objcopy)
+
+$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
+ $(call if_changed,gzip)
+
+$(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin FORCE
+ $(call if_changed,bzip2)
+
+$(obj)/vmlinux.bin.xz: $(obj)/vmlinux.bin FORCE
+ $(call if_changed,xzkern)
+
+$(obj)/vmlinux.bin.lzo: $(obj)/vmlinux.bin FORCE
+ $(call if_changed,lzo)
+
+$(obj)/uImage.gz: $(obj)/vmlinux.bin.gz FORCE
+ $(call if_changed,uimage,gzip)
+
+$(obj)/uImage.bz2: $(obj)/vmlinux.bin.bz2 FORCE
+ $(call if_changed,uimage,bzip2)
+
+$(obj)/uImage.xz: $(obj)/vmlinux.bin.xz FORCE
+ $(call if_changed,uimage,xz)
+
+$(obj)/uImage.lzo: $(obj)/vmlinux.bin.lzo FORCE
+ $(call if_changed,uimage,lzo)
+
+$(obj)/uImage.bin: $(obj)/vmlinux.bin FORCE
+ $(call if_changed,uimage,none)
+
+$(obj)/uImage: $(obj)/uImage.$(suffix-y)
+ @ln -sf $(notdir $<) $@
+ @echo ' Image $@ is ready'
diff --git a/arch/metag/configs/meta1_defconfig b/arch/metag/configs/meta1_defconfig
new file mode 100644
index 0000000..74cc490
--- /dev/null
+++ b/arch/metag/configs/meta1_defconfig
@@ -0,0 +1,39 @@
+CONFIG_EXPERIMENTAL=y
+# CONFIG_LOCALVERSION_AUTO is not set
+# CONFIG_SWAP is not set
+CONFIG_LOG_BUF_SHIFT=13
+CONFIG_SYSFS_DEPRECATED=y
+CONFIG_SYSFS_DEPRECATED_V2=y
+CONFIG_KALLSYMS_ALL=y
+# CONFIG_ELF_CORE is not set
+CONFIG_SLAB=y
+# CONFIG_BLK_DEV_BSG is not set
+CONFIG_PARTITION_ADVANCED=y
+# CONFIG_MSDOS_PARTITION is not set
+# CONFIG_IOSCHED_DEADLINE is not set
+# CONFIG_IOSCHED_CFQ is not set
+CONFIG_FLATMEM_MANUAL=y
+CONFIG_META12_FPGA=y
+CONFIG_HZ_100=y
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+# CONFIG_STANDALONE is not set
+# CONFIG_PREVENT_FIRMWARE_BUILD is not set
+# CONFIG_FW_LOADER is not set
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=1
+CONFIG_BLK_DEV_RAM_SIZE=16384
+# CONFIG_INPUT is not set
+# CONFIG_SERIO is not set
+# CONFIG_VT is not set
+# CONFIG_LEGACY_PTYS is not set
+# CONFIG_DEVKMEM is not set
+# CONFIG_HW_RANDOM is not set
+# CONFIG_HWMON is not set
+# CONFIG_USB_SUPPORT is not set
+# CONFIG_DNOTIFY is not set
+CONFIG_TMPFS=y
+# CONFIG_MISC_FILESYSTEMS is not set
+# CONFIG_SCHED_DEBUG is not set
+CONFIG_DEBUG_INFO=y
+# CONFIG_CRC32 is not set
diff --git a/arch/metag/configs/meta2_defconfig b/arch/metag/configs/meta2_defconfig
new file mode 100644
index 0000000..ad4ee2b
--- /dev/null
+++ b/arch/metag/configs/meta2_defconfig
@@ -0,0 +1,40 @@
+CONFIG_EXPERIMENTAL=y
+# CONFIG_LOCALVERSION_AUTO is not set
+# CONFIG_SWAP is not set
+CONFIG_SYSVIPC=y
+CONFIG_LOG_BUF_SHIFT=13
+CONFIG_SYSFS_DEPRECATED=y
+CONFIG_SYSFS_DEPRECATED_V2=y
+CONFIG_KALLSYMS_ALL=y
+# CONFIG_ELF_CORE is not set
+CONFIG_SLAB=y
+# CONFIG_BLK_DEV_BSG is not set
+CONFIG_PARTITION_ADVANCED=y
+# CONFIG_MSDOS_PARTITION is not set
+# CONFIG_IOSCHED_DEADLINE is not set
+# CONFIG_IOSCHED_CFQ is not set
+CONFIG_METAG_L2C=y
+CONFIG_FLATMEM_MANUAL=y
+CONFIG_METAG_HALT_ON_PANIC=y
+CONFIG_HZ_100=y
+CONFIG_DEVTMPFS=y
+# CONFIG_STANDALONE is not set
+# CONFIG_PREVENT_FIRMWARE_BUILD is not set
+# CONFIG_FW_LOADER is not set
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=1
+CONFIG_BLK_DEV_RAM_SIZE=16384
+# CONFIG_INPUT is not set
+# CONFIG_SERIO is not set
+# CONFIG_VT is not set
+# CONFIG_LEGACY_PTYS is not set
+# CONFIG_DEVKMEM is not set
+# CONFIG_HW_RANDOM is not set
+# CONFIG_HWMON is not set
+# CONFIG_USB_SUPPORT is not set
+# CONFIG_DNOTIFY is not set
+CONFIG_TMPFS=y
+# CONFIG_MISC_FILESYSTEMS is not set
+# CONFIG_SCHED_DEBUG is not set
+CONFIG_DEBUG_INFO=y
+# CONFIG_CRC32 is not set
diff --git a/arch/metag/configs/meta2_smp_defconfig b/arch/metag/configs/meta2_smp_defconfig
new file mode 100644
index 0000000..d9349df
--- /dev/null
+++ b/arch/metag/configs/meta2_smp_defconfig
@@ -0,0 +1,41 @@
+CONFIG_EXPERIMENTAL=y
+# CONFIG_LOCALVERSION_AUTO is not set
+# CONFIG_SWAP is not set
+CONFIG_SYSVIPC=y
+CONFIG_LOG_BUF_SHIFT=13
+CONFIG_SYSFS_DEPRECATED=y
+CONFIG_SYSFS_DEPRECATED_V2=y
+CONFIG_KALLSYMS_ALL=y
+# CONFIG_ELF_CORE is not set
+CONFIG_SLAB=y
+# CONFIG_BLK_DEV_BSG is not set
+CONFIG_PARTITION_ADVANCED=y
+# CONFIG_MSDOS_PARTITION is not set
+# CONFIG_IOSCHED_DEADLINE is not set
+# CONFIG_IOSCHED_CFQ is not set
+CONFIG_METAG_L2C=y
+CONFIG_FLATMEM_MANUAL=y
+CONFIG_METAG_HALT_ON_PANIC=y
+CONFIG_SMP=y
+CONFIG_HZ_100=y
+CONFIG_DEVTMPFS=y
+# CONFIG_STANDALONE is not set
+# CONFIG_PREVENT_FIRMWARE_BUILD is not set
+# CONFIG_FW_LOADER is not set
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=1
+CONFIG_BLK_DEV_RAM_SIZE=16384
+# CONFIG_INPUT is not set
+# CONFIG_SERIO is not set
+# CONFIG_VT is not set
+# CONFIG_LEGACY_PTYS is not set
+# CONFIG_DEVKMEM is not set
+# CONFIG_HW_RANDOM is not set
+# CONFIG_HWMON is not set
+# CONFIG_USB_SUPPORT is not set
+# CONFIG_DNOTIFY is not set
+CONFIG_TMPFS=y
+# CONFIG_MISC_FILESYSTEMS is not set
+# CONFIG_SCHED_DEBUG is not set
+CONFIG_DEBUG_INFO=y
+# CONFIG_CRC32 is not set
diff --git a/arch/metag/include/asm/Kbuild b/arch/metag/include/asm/Kbuild
new file mode 100644
index 0000000..380a9f3
--- /dev/null
+++ b/arch/metag/include/asm/Kbuild
@@ -0,0 +1,54 @@
+generic-y += auxvec.h
+generic-y += bitsperlong.h
+generic-y += bugs.h
+generic-y += clkdev.h
+generic-y += cputime.h
+generic-y += current.h
+generic-y += device.h
+generic-y += dma.h
+generic-y += emergency-restart.h
+generic-y += errno.h
+generic-y += exec.h
+generic-y += fb.h
+generic-y += fcntl.h
+generic-y += ftrace.h
+generic-y += futex.h
+generic-y += hardirq.h
+generic-y += hw_irq.h
+generic-y += ioctl.h
+generic-y += ioctls.h
+generic-y += ipcbuf.h
+generic-y += irq_regs.h
+generic-y += kdebug.h
+generic-y += kmap_types.h
+generic-y += kvm_para.h
+generic-y += local.h
+generic-y += local64.h
+generic-y += msgbuf.h
+generic-y += mutex.h
+generic-y += param.h
+generic-y += pci.h
+generic-y += percpu.h
+generic-y += poll.h
+generic-y += posix_types.h
+generic-y += scatterlist.h
+generic-y += sections.h
+generic-y += sembuf.h
+generic-y += serial.h
+generic-y += shmbuf.h
+generic-y += shmparam.h
+generic-y += signal.h
+generic-y += socket.h
+generic-y += sockios.h
+generic-y += stat.h
+generic-y += statfs.h
+generic-y += switch_to.h
+generic-y += termbits.h
+generic-y += termios.h
+generic-y += timex.h
+generic-y += types.h
+generic-y += ucontext.h
+generic-y += unaligned.h
+generic-y += user.h
+generic-y += vga.h
+generic-y += xor.h
diff --git a/arch/metag/include/uapi/asm/Kbuild b/arch/metag/include/uapi/asm/Kbuild
new file mode 100644
index 0000000..876c71f
--- /dev/null
+++ b/arch/metag/include/uapi/asm/Kbuild
@@ -0,0 +1,13 @@
+# UAPI Header export list
+include include/uapi/asm-generic/Kbuild.asm
+
+header-y += byteorder.h
+header-y += ptrace.h
+header-y += resource.h
+header-y += sigcontext.h
+header-y += siginfo.h
+header-y += swab.h
+header-y += unistd.h
+
+generic-y += mman.h
+generic-y += setup.h
diff --git a/arch/metag/kernel/.gitignore b/arch/metag/kernel/.gitignore
new file mode 100644
index 0000000..c5f676c
--- /dev/null
+++ b/arch/metag/kernel/.gitignore
@@ -0,0 +1 @@
+vmlinux.lds
diff --git a/arch/metag/kernel/Makefile b/arch/metag/kernel/Makefile
new file mode 100644
index 0000000..abe0e03
--- /dev/null
+++ b/arch/metag/kernel/Makefile
@@ -0,0 +1,38 @@
+#
+# Makefile for the Linux/Meta kernel.
+#
+
+extra-y += head.o
+extra-y += vmlinux.lds
+
+obj-y += cachepart.o
+obj-y += clock.o
+obj-y += core_reg.o
+obj-y += devtree.o
+obj-y += dma.o
+obj-y += irq.o
+obj-y += irq_external.o
+obj-y += kick.o
+obj-y += machines.o
+obj-y += process.o
+obj-y += ptrace.o
+obj-y += setup.o
+obj-y += signal.o
+obj-y += stacktrace.o
+obj-y += sys_metag.o
+obj-y += tbiunexp.o
+obj-y += time.o
+obj-y += topology.o
+obj-y += traps.o
+obj-y += user_gateway.o
+
+obj-$(CONFIG_METAG_COREMEM) += coremem.o
+obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o
+obj-$(CONFIG_FUNCTION_TRACER) += ftrace_stub.o
+obj-$(CONFIG_METAG_PERFCOUNTER_IRQS) += irq_internal.o
+obj-$(CONFIG_MODULES) += metag_ksyms.o
+obj-$(CONFIG_MODULES) += module.o
+obj-$(CONFIG_PERF_EVENTS) += perf_callchain.o
+obj-$(CONFIG_SMP) += smp.o
+obj-$(CONFIG_METAG_SUSPEND_MEM) += suspend.o
+obj-$(CONFIG_METAG_USER_TCM) += tcm.o
diff --git a/arch/metag/kernel/asm-offsets.c b/arch/metag/kernel/asm-offsets.c
new file mode 100644
index 0000000..bfc9205
--- /dev/null
+++ b/arch/metag/kernel/asm-offsets.c
@@ -0,0 +1,14 @@
+/*
+ * This program is used to generate definitions needed by
+ * assembly language modules.
+ *
+ */
+
+#include <linux/kbuild.h>
+#include <linux/thread_info.h>
+
+int main(void)
+{
+ DEFINE(THREAD_INFO_SIZE, sizeof(struct thread_info));
+ return 0;
+}
diff --git a/arch/metag/kernel/metag_ksyms.c b/arch/metag/kernel/metag_ksyms.c
new file mode 100644
index 0000000..5513baa
--- /dev/null
+++ b/arch/metag/kernel/metag_ksyms.c
@@ -0,0 +1,74 @@
+#include <linux/export.h>
+#include <linux/linkage.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/user.h>
+#include <linux/interrupt.h>
+#include <linux/hardirq.h>
+
+#include <asm/setup.h>
+#include <asm/checksum.h>
+#include <asm/uaccess.h>
+#include <asm/traps.h>
+#include <asm/tbx.h>
+
+/* uaccess symbols */
+EXPORT_SYMBOL(__copy_user_zeroing);
+EXPORT_SYMBOL(__copy_user);
+EXPORT_SYMBOL(__get_user_asm_b);
+EXPORT_SYMBOL(__get_user_asm_w);
+EXPORT_SYMBOL(__get_user_asm_d);
+EXPORT_SYMBOL(__put_user_asm_b);
+EXPORT_SYMBOL(__put_user_asm_w);
+EXPORT_SYMBOL(__put_user_asm_d);
+EXPORT_SYMBOL(__put_user_asm_l);
+EXPORT_SYMBOL(__strncpy_from_user);
+EXPORT_SYMBOL(strnlen_user);
+EXPORT_SYMBOL(__do_clear_user);
+
+EXPORT_SYMBOL(pTBI_get);
+EXPORT_SYMBOL(meta_memoffset);
+EXPORT_SYMBOL(kick_register_func);
+EXPORT_SYMBOL(kick_unregister_func);
+#ifdef CONFIG_SMP
+EXPORT_SYMBOL(get_trigger_mask);
+#else
+EXPORT_SYMBOL(global_trigger_mask);
+#endif
+
+EXPORT_SYMBOL(empty_zero_page);
+EXPORT_SYMBOL(kernel_thread);
+
+EXPORT_SYMBOL(pfn_base);
+
+/* TBI symbols */
+EXPORT_SYMBOL(__TBI);
+EXPORT_SYMBOL(__TBIFindSeg);
+EXPORT_SYMBOL(__TBIPoll);
+EXPORT_SYMBOL(__TBITimeStamp);
+EXPORT_SYMBOL(__TBITransStr);
+EXPORT_SYMBOL(__TBICodeCacheFlush);
+EXPORT_SYMBOL(__TBIDataCacheFlush);
+
+#define DECLARE_EXPORT(name) extern void name(void); EXPORT_SYMBOL(name)
+
+/* libgcc functions */
+DECLARE_EXPORT(__ashldi3);
+DECLARE_EXPORT(__ashrdi3);
+DECLARE_EXPORT(__lshrdi3);
+DECLARE_EXPORT(__udivsi3);
+DECLARE_EXPORT(__divsi3);
+DECLARE_EXPORT(__umodsi3);
+DECLARE_EXPORT(__modsi3);
+DECLARE_EXPORT(__muldi3);
+DECLARE_EXPORT(__cmpdi2);
+DECLARE_EXPORT(__ucmpdi2);
+
+/* Maths functions */
+EXPORT_SYMBOL(div_u64);
+EXPORT_SYMBOL(div_s64);
+
+/* String functions */
+EXPORT_SYMBOL(memcpy);
+EXPORT_SYMBOL(memset);
+EXPORT_SYMBOL(memmove);
diff --git a/arch/metag/kernel/vmlinux.lds.S b/arch/metag/kernel/vmlinux.lds.S
new file mode 100644
index 0000000..d1ad7cf
--- /dev/null
+++ b/arch/metag/kernel/vmlinux.lds.S
@@ -0,0 +1,71 @@
+/* ld script to make Meta Linux kernel */
+
+#include <asm/thread_info.h>
+#include <asm/page.h>
+#include <asm/cache.h>
+
+#include <asm-generic/vmlinux.lds.h>
+
+OUTPUT_FORMAT("elf32-metag", "elf32-metag", "elf32-metag")
+OUTPUT_ARCH(metag)
+ENTRY(__start)
+
+_jiffies = _jiffies_64;
+SECTIONS
+{
+ . = CONFIG_PAGE_OFFSET;
+ _text = .;
+ __text = .;
+ __stext = .;
+ HEAD_TEXT_SECTION
+ .text : {
+ TEXT_TEXT
+ SCHED_TEXT
+ LOCK_TEXT
+ KPROBES_TEXT
+ IRQENTRY_TEXT
+ *(.text.*)
+ *(.gnu.warning)
+ }
+
+ __etext = .; /* End of text section */
+
+ __sdata = .;
+ RO_DATA_SECTION(PAGE_SIZE)
+ RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
+ __edata = .; /* End of data section */
+
+ EXCEPTION_TABLE(16)
+ NOTES
+
+ . = ALIGN(PAGE_SIZE); /* Init code and data */
+ ___init_begin = .;
+ INIT_TEXT_SECTION(PAGE_SIZE)
+ INIT_DATA_SECTION(16)
+
+ .init.arch.info : {
+ ___arch_info_begin = .;
+ *(.arch.info.init)
+ ___arch_info_end = .;
+ }
+
+ PERCPU_SECTION(L1_CACHE_BYTES)
+
+ ___init_end = .;
+
+ BSS_SECTION(0, PAGE_SIZE, 0)
+
+ __end = .;
+
+ . = ALIGN(PAGE_SIZE);
+ __heap_start = .;
+
+ DWARF_DEBUG
+
+ /* When something in the kernel is NOT compiled as a module, the
+ * module cleanup code and data are put into these segments. Both
+ * can then be thrown away, as cleanup code is never called unless
+ * it's a module.
+ */
+ DISCARDS
+}
diff --git a/arch/metag/lib/Makefile b/arch/metag/lib/Makefile
new file mode 100644
index 0000000..a41d24e
--- /dev/null
+++ b/arch/metag/lib/Makefile
@@ -0,0 +1,22 @@
+#
+# Makefile for Meta-specific library files.
+#
+
+lib-y += usercopy.o
+lib-y += copy_page.o
+lib-y += clear_page.o
+lib-y += memcpy.o
+lib-y += memmove.o
+lib-y += memset.o
+lib-y += delay.o
+lib-y += div64.o
+lib-y += muldi3.o
+lib-y += ashrdi3.o
+lib-y += ashldi3.o
+lib-y += lshrdi3.o
+lib-y += divsi3.o
+lib-y += modsi3.o
+lib-y += cmpdi2.o
+lib-y += ucmpdi2.o
+lib-y += ip_fast_csum.o
+lib-y += checksum.o
diff --git a/arch/metag/mm/Kconfig b/arch/metag/mm/Kconfig
new file mode 100644
index 0000000..cd7f2f2
--- /dev/null
+++ b/arch/metag/mm/Kconfig
@@ -0,0 +1,153 @@
+menu "Memory management options"
+
+config PAGE_OFFSET
+ hex "Kernel page offset address"
+ default "0x40000000"
+ help
+ This option allows you to set the virtual address at which the
+ kernel will be mapped to.
+endmenu
+
+config KERNEL_4M_PAGES
+ bool "Map kernel with 4MB pages"
+ depends on METAG_META21_MMU
+ default y
+ help
+ Map the kernel with large pages to reduce TLB pressure.
+
+choice
+ prompt "User page size"
+ default PAGE_SIZE_4K
+
+config PAGE_SIZE_4K
+ bool "4kB"
+ help
+ This is the default page size used by all Meta cores.
+
+config PAGE_SIZE_8K
+ bool "8kB"
+ depends on METAG_META21_MMU
+ help
+ This enables 8kB pages as supported by Meta 2.x and later MMUs.
+
+config PAGE_SIZE_16K
+ bool "16kB"
+ depends on METAG_META21_MMU
+ help
+ This enables 16kB pages as supported by Meta 2.x and later MMUs.
+
+endchoice
+
+config NUMA
+ bool "Non Uniform Memory Access (NUMA) Support"
+ help
+ Some Meta systems have MMU-mappable on-chip memories with
+ lower latencies than main memory. This enables support for
+ these blocks by binding them to nodes and allowing
+ memory policies to be used for prioritizing and controlling
+ allocation behaviour.
+
+config FORCE_MAX_ZONEORDER
+ int "Maximum zone order"
+ range 10 32
+ default "10"
+ help
+ The kernel memory allocator divides physically contiguous memory
+ blocks into "zones", where each zone is a power of two number of
+ pages. This option selects the largest power of two that the kernel
+ keeps in the memory allocator. If you need to allocate very large
+ blocks of physically contiguous memory, then you may need to
+ increase this value.
+
+ This config option is actually maximum order plus one. For example,
+ a value of 11 means that the largest free memory block is 2^10 pages.
+
+ The page size is not necessarily 4KB. Keep this in mind
+ when choosing a value for this option.
+
+config METAG_L2C
+ bool "Level 2 Cache Support"
+ depends on METAG_META21
+ help
+ Press y here to enable support for the Meta Level 2 (L2) cache. This
+ will enable the cache at start up if it hasn't already been enabled
+ by the bootloader.
+
+ If the bootloader enables the L2 you must press y here to ensure the
+ kernel takes the appropriate actions to keep the cache coherent.
+
+config NODES_SHIFT
+ int
+ default "1"
+ depends on NEED_MULTIPLE_NODES
+
+config ARCH_FLATMEM_ENABLE
+ def_bool y
+ depends on !NUMA
+
+config ARCH_SPARSEMEM_ENABLE
+ def_bool y
+ select SPARSEMEM_STATIC
+
+config ARCH_SPARSEMEM_DEFAULT
+ def_bool y
+
+config MAX_ACTIVE_REGIONS
+ int
+ default "2" if SPARSEMEM
+ default "1"
+
+config ARCH_POPULATES_NODE_MAP
+ def_bool y
+
+config ARCH_SELECT_MEMORY_MODEL
+ def_bool y
+
+config SYS_SUPPORTS_HUGETLBFS
+ def_bool y
+ depends on METAG_META21_MMU
+
+choice
+ prompt "HugeTLB page size"
+ depends on METAG_META21_MMU && HUGETLB_PAGE
+ default HUGETLB_PAGE_SIZE_1M
+
+config HUGETLB_PAGE_SIZE_8K
+ bool "8kB"
+ depends on PAGE_SIZE_4K
+
+config HUGETLB_PAGE_SIZE_16K
+ bool "16kB"
+ depends on PAGE_SIZE_4K || PAGE_SIZE_8K
+
+config HUGETLB_PAGE_SIZE_32K
+ bool "32kB"
+
+config HUGETLB_PAGE_SIZE_64K
+ bool "64kB"
+
+config HUGETLB_PAGE_SIZE_128K
+ bool "128kB"
+
+config HUGETLB_PAGE_SIZE_256K
+ bool "256kB"
+
+config HUGETLB_PAGE_SIZE_512K
+ bool "512kB"
+
+config HUGETLB_PAGE_SIZE_1M
+ bool "1MB"
+
+config HUGETLB_PAGE_SIZE_2M
+ bool "2MB"
+
+config HUGETLB_PAGE_SIZE_4M
+ bool "4MB"
+
+endchoice
+
+config METAG_COREMEM
+ bool
+ default y if SUSPEND
+
+source "mm/Kconfig"
diff --git a/arch/metag/mm/Makefile b/arch/metag/mm/Makefile
new file mode 100644
index 0000000..8ab791b
--- /dev/null
+++ b/arch/metag/mm/Makefile
@@ -0,0 +1,18 @@
+#
+# Makefile for the linux Meta-specific parts of the memory manager.
+#
+
+obj-y += extable.o
+obj-y += fault.o
+obj-y += init.o
+obj-y += ioremap.o
+obj-y += maccess.o
+
+mmu-y := mmu-meta1.o
+mmu-$(CONFIG_METAG_META21_MMU) := mmu-meta2.o
+obj-y += $(mmu-y)
+
+obj-$(CONFIG_HIGHMEM) += highmem.o
+obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
+obj-$(CONFIG_METAG_L2C) += l2cache.o
+obj-$(CONFIG_NUMA) += numa.o
diff --git a/arch/metag/tbx/Makefile b/arch/metag/tbx/Makefile
new file mode 100644
index 0000000..4cd26f7
--- /dev/null
+++ b/arch/metag/tbx/Makefile
@@ -0,0 +1,22 @@
+#
+# Makefile for TBX library files..
+#
+
+asflags-y += -mmetac=2.1 -Wa,-mfpu=metac21 -mdsp
+asflags-$(CONFIG_SMP) += -DTBX_PERCPU_SP_SAVE
+
+ccflags-y += -mmetac=2.1
+
+lib-y += tbicache.o
+lib-y += tbicore.o
+lib-y += tbictx.o
+lib-y += tbidefr.o
+lib-y += tbilogf.o
+lib-y += tbipcx.o
+lib-y += tbiroot.o
+lib-y += tbisoft.o
+lib-y += tbistring.o
+lib-y += tbitimer.o
+
+lib-$(CONFIG_METAG_DSP) += tbidspram.o
+lib-$(CONFIG_METAG_FPU) += tbictxfpu.o
--
1.7.7.6
--
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