--- /dev/null
+# For a description of the syntax of this configuration file,
+# see Documentation/kbuild/kconfig-language.txt.
+
+config TILE
+ def_bool y
+ select HAVE_PERF_EVENTS
+ select USE_PMC if PERF_EVENTS
+ select HAVE_DMA_ATTRS
+ select HAVE_DMA_API_DEBUG
+ select HAVE_KVM if !TILEGX
+ select GENERIC_FIND_FIRST_BIT
+ select SYSCTL_EXCEPTION_TRACE
+ select CC_OPTIMIZE_FOR_SIZE
+ select HAVE_DEBUG_KMEMLEAK
+ select GENERIC_IRQ_PROBE
+ select GENERIC_PENDING_IRQ if SMP
+ select GENERIC_IRQ_SHOW
+ select HAVE_DEBUG_BUGVERBOSE
+ select VIRT_TO_BUS
+ select SYS_HYPERVISOR
+ select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
+ select ARCH_HAVE_NMI_SAFE_CMPXCHG
+ select GENERIC_CLOCKEVENTS
+ select MODULES_USE_ELF_RELA
+ select HAVE_ARCH_TRACEHOOK
+ select HAVE_SYSCALL_TRACEPOINTS
+ select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
+ select HAVE_DEBUG_STACKOVERFLOW
+ select ARCH_WANT_FRAME_POINTERS
+ select HAVE_CONTEXT_TRACKING
+
+# FIXME: investigate whether we need/want these options.
+# select HAVE_IOREMAP_PROT
+# select HAVE_OPTPROBES
+# select HAVE_REGS_AND_STACK_ACCESS_API
+# select HAVE_HW_BREAKPOINT
+# select PERF_EVENTS
+# select HAVE_USER_RETURN_NOTIFIER
+# config NO_BOOTMEM
+# config ARCH_SUPPORTS_DEBUG_PAGEALLOC
+# config HUGETLB_PAGE_SIZE_VARIABLE
+
+config MMU
+ def_bool y
+
+config GENERIC_CSUM
+ def_bool y
+
+config HAVE_ARCH_ALLOC_REMAP
+ def_bool y
+
+config HAVE_SETUP_PER_CPU_AREA
+ def_bool y
+
+config NEED_PER_CPU_PAGE_FIRST_CHUNK
+ def_bool y
+
+config SYS_SUPPORTS_HUGETLBFS
+ def_bool y
+
+# Support for additional huge page sizes besides HPAGE_SIZE.
+# The software support is currently only present in the TILE-Gx
+# hypervisor. TILEPro in any case does not support page sizes
+# larger than the default HPAGE_SIZE.
+config HUGETLB_SUPER_PAGES
+ depends on HUGETLB_PAGE && TILEGX
+ def_bool y
+
+config GENERIC_TIME_VSYSCALL
+ def_bool y
+
+# Enable PMC if PERF_EVENTS, OPROFILE, or WATCHPOINTS are enabled.
+config USE_PMC
+ bool
+
+# FIXME: tilegx can implement a more efficient rwsem.
+config RWSEM_GENERIC_SPINLOCK
+ def_bool y
+
+# We only support gcc 4.4 and above, so this should work.
+config ARCH_SUPPORTS_OPTIMIZED_INLINING
+ def_bool y
+
+config ARCH_PHYS_ADDR_T_64BIT
+ def_bool y
+
+config ARCH_DMA_ADDR_T_64BIT
+ def_bool y
+
+config NEED_DMA_MAP_STATE
+ def_bool y
+
+config ARCH_HAS_DMA_SET_COHERENT_MASK
+ bool
+
+config LOCKDEP_SUPPORT
+ def_bool y
+
+config STACKTRACE_SUPPORT
+ def_bool y
+ select STACKTRACE
+
+# We use discontigmem for now; at some point we may want to switch
+# to sparsemem (Tilera bug 7996).
+config ARCH_DISCONTIGMEM_ENABLE
+ def_bool y
+
+config ARCH_DISCONTIGMEM_DEFAULT
+ def_bool y
+
+config TRACE_IRQFLAGS_SUPPORT
+ def_bool y
+
+config STRICT_DEVMEM
+ def_bool y
+
+# SMP is required for Tilera Linux.
+config SMP
+ def_bool y
+
+config HVC_TILE
+ depends on TTY
+ select HVC_DRIVER
+ select HVC_IRQ if TILEGX
+ def_bool y
+
+config TILEGX
+ bool "Building for TILE-Gx (64-bit) processor"
+ select SPARSE_IRQ
+ select GENERIC_IRQ_LEGACY_ALLOC_HWIRQ
+ select HAVE_FUNCTION_TRACER
+ select HAVE_FUNCTION_GRAPH_TRACER
+ select HAVE_DYNAMIC_FTRACE
+ select HAVE_FTRACE_MCOUNT_RECORD
+ select HAVE_KPROBES
+ select HAVE_KRETPROBES
+ select HAVE_ARCH_KGDB
+ select ARCH_SUPPORTS_ATOMIC_RMW
+
+config TILEPRO
+ def_bool !TILEGX
+
+config 64BIT
+ def_bool TILEGX
+
+config ARCH_DEFCONFIG
+ string
+ default "arch/tile/configs/tilepro_defconfig" if !TILEGX
+ default "arch/tile/configs/tilegx_defconfig" if TILEGX
+
+config PGTABLE_LEVELS
+ int
+ default 3 if 64BIT
+ default 2
+
+source "init/Kconfig"
+
+source "kernel/Kconfig.freezer"
+
+menu "Tilera-specific configuration"
+
+config NR_CPUS
+ int "Maximum number of tiles (2-255)"
+ range 2 255
+ depends on SMP
+ default "64"
+ ---help---
+ Building with 64 is the recommended value, but a slightly
+ smaller kernel memory footprint results from using a smaller
+ value on chips with fewer tiles.
+
+if TILEGX
+
+choice
+ prompt "Kernel page size"
+ default PAGE_SIZE_64KB
+ help
+ This lets you select the page size of the kernel. For best
+ performance on memory-intensive applications, a page size of 64KB
+ is recommended. For workloads involving many small files, many
+ connections, etc., it may be better to select 16KB, which uses
+ memory more efficiently at some cost in TLB performance.
+
+ Note that this option is TILE-Gx specific; currently
+ TILEPro page size is set by rebuilding the hypervisor.
+
+config PAGE_SIZE_16KB
+ bool "16KB"
+
+config PAGE_SIZE_64KB
+ bool "64KB"
+
+endchoice
+
+endif
+
+source "kernel/Kconfig.hz"
+
+config KEXEC
+ bool "kexec system call"
+ ---help---
+ kexec is a system call that implements the ability to shutdown your
+ current kernel, and to start another kernel. It is like a reboot
+ but it is independent of the system firmware. It is used
+ to implement the "mboot" Tilera booter.
+
+ The name comes from the similarity to the exec system call.
+
+config COMPAT
+ bool "Support 32-bit TILE-Gx binaries in addition to 64-bit"
+ depends on TILEGX
+ select COMPAT_BINFMT_ELF
+ default y
+ ---help---
+ If enabled, the kernel will support running TILE-Gx binaries
+ that were built with the -m32 option.
+
+config SYSVIPC_COMPAT
+ def_bool y
+ depends on COMPAT && SYSVIPC
+
+# We do not currently support disabling HIGHMEM on tilepro.
+config HIGHMEM
+ bool # "Support for more than 512 MB of RAM"
+ default !TILEGX
+ ---help---
+ Linux can use the full amount of RAM in the system by
+ default. However, the address space of TILE processors is
+ only 4 Gigabytes large. That means that, if you have a large
+ amount of physical memory, not all of it can be "permanently
+ mapped" by the kernel. The physical memory that's not
+ permanently mapped is called "high memory".
+
+ If you are compiling a kernel which will never run on a
+ machine with more than 512 MB total physical RAM, answer
+ "false" here. This will result in the kernel mapping all of
+ physical memory into the top 1 GB of virtual memory space.
+
+ If unsure, say "true".
+
+config ZONE_DMA
+ def_bool y
+
+config IOMMU_HELPER
+ bool
+
+config NEED_SG_DMA_LENGTH
+ bool
+
+config SWIOTLB
+ bool
+ default TILEGX
+ select IOMMU_HELPER
+ select NEED_SG_DMA_LENGTH
+ select ARCH_HAS_DMA_SET_COHERENT_MASK
+
+# We do not currently support disabling NUMA.
+config NUMA
+ bool # "NUMA Memory Allocation and Scheduler Support"
+ depends on SMP && DISCONTIGMEM
+ default y
+ ---help---
+ NUMA memory allocation is required for TILE processors
+ unless booting with memory striping enabled in the
+ hypervisor, or with only a single memory controller.
+ It is recommended that this option always be enabled.
+
+config NODES_SHIFT
+ int "Log base 2 of the max number of memory controllers"
+ default 2
+ depends on NEED_MULTIPLE_NODES
+ ---help---
+ By default, 2, i.e. 2^2 == 4 DDR2 controllers.
+ In a system with more controllers, this value should be raised.
+
+choice
+ depends on !TILEGX
+ prompt "Memory split" if EXPERT
+ default VMSPLIT_3G
+ ---help---
+ Select the desired split between kernel and user memory.
+
+ If the address range available to the kernel is less than the
+ physical memory installed, the remaining memory will be available
+ as "high memory". Accessing high memory is a little more costly
+ than low memory, as it needs to be mapped into the kernel first.
+ Note that increasing the kernel address space limits the range
+ available to user programs, making the address space there
+ tighter. Selecting anything other than the default 3G/1G split
+ will also likely make your kernel incompatible with binary-only
+ kernel modules.
+
+ If you are not absolutely sure what you are doing, leave this
+ option alone!
+
+ config VMSPLIT_3_75G
+ bool "3.75G/0.25G user/kernel split (no kernel networking)"
+ config VMSPLIT_3_5G
+ bool "3.5G/0.5G user/kernel split"
+ config VMSPLIT_3G
+ bool "3G/1G user/kernel split"
+ config VMSPLIT_2_75G
+ bool "2.75G/1.25G user/kernel split (for full 1G low memory)"
+ config VMSPLIT_2_5G
+ bool "2.5G/1.5G user/kernel split"
+ config VMSPLIT_2_25G
+ bool "2.25G/1.75G user/kernel split"
+ config VMSPLIT_2G
+ bool "2G/2G user/kernel split"
+ config VMSPLIT_1G
+ bool "1G/3G user/kernel split"
+endchoice
+
+config PAGE_OFFSET
+ hex
+ depends on !64BIT
+ default 0xF0000000 if VMSPLIT_3_75G
+ default 0xE0000000 if VMSPLIT_3_5G
+ default 0xB0000000 if VMSPLIT_2_75G
+ default 0xA0000000 if VMSPLIT_2_5G
+ default 0x90000000 if VMSPLIT_2_25G
+ default 0x80000000 if VMSPLIT_2G
+ default 0x40000000 if VMSPLIT_1G
+ default 0xC0000000
+
+source "mm/Kconfig"
+
+source "kernel/Kconfig.preempt"
+
+config CMDLINE_BOOL
+ bool "Built-in kernel command line"
+ default n
+ ---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_CMDLINE.
+
+ Systems with fully functional boot loaders (e.g. mboot, or
+ if booting over PCI) should leave this option set to 'N'.
+
+config CMDLINE
+ string "Built-in kernel command string"
+ depends on 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_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 CMDLINE_OVERRIDE
+ bool "Built-in command line overrides boot loader arguments"
+ default n
+ depends on 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.
+
+config VMALLOC_RESERVE
+ hex
+ default 0x2000000
+
+config HARDWALL
+ bool "Hardwall support to allow access to user dynamic network"
+ default y
+
+config KERNEL_PL
+ int "Processor protection level for kernel"
+ range 1 2
+ default 2 if TILEGX
+ default 1 if !TILEGX
+ ---help---
+ Since MDE 4.2, the Tilera hypervisor runs the kernel
+ at PL2 by default. If running under an older hypervisor,
+ or as a KVM guest, you must run at PL1. (The current
+ hypervisor may also be recompiled with "make HV_PL=2" to
+ allow it to run a kernel at PL1, but clients running at PL1
+ are not expected to be supported indefinitely.)
+
+ If you're not sure, don't change the default.
+
+source "arch/tile/gxio/Kconfig"
+
+endmenu # Tilera-specific configuration
+
+menu "Bus options"
+
+config PCI
+ bool "PCI support"
+ default y
+ select PCI_DOMAINS
+ select GENERIC_PCI_IOMAP
+ select TILE_GXIO_TRIO if TILEGX
+ select PCI_MSI if TILEGX
+ ---help---
+ Enable PCI root complex support, so PCIe endpoint devices can
+ be attached to the Tile chip. Many, but not all, PCI devices
+ are supported under Tilera's root complex driver.
+
+config PCI_DOMAINS
+ bool
+
+config NO_IOMEM
+ def_bool !PCI
+
+config NO_IOPORT_MAP
+ def_bool !PCI
+
+config TILE_PCI_IO
+ bool "PCI I/O space support"
+ default n
+ depends on PCI
+ depends on TILEGX
+ ---help---
+ Enable PCI I/O space support on TILEGx. Since the PCI I/O space
+ is used by few modern PCIe endpoint devices, its support is disabled
+ by default to save the TRIO PIO Region resource for other purposes.
+
+source "drivers/pci/Kconfig"
+
+source "drivers/pci/pcie/Kconfig"
+
+config TILE_USB
+ tristate "Tilera USB host adapter support"
+ default y
+ depends on USB
+ depends on TILEGX
+ select TILE_GXIO_USB_HOST
+ ---help---
+ Provides USB host adapter support for the built-in EHCI and OHCI
+ interfaces on TILE-Gx chips.
+
+source "drivers/pci/hotplug/Kconfig"
+
+endmenu
+
+menu "Executable file formats"
+
+source "fs/Kconfig.binfmt"
+
+endmenu
+
+source "net/Kconfig"
+
+source "drivers/Kconfig"
+
+source "fs/Kconfig"
+
+source "arch/tile/Kconfig.debug"
+
+source "security/Kconfig"
+
+source "crypto/Kconfig"
+
+source "lib/Kconfig"
+
+source "arch/tile/kvm/Kconfig"
Code Review / kvmfornfv.git / blobdiff