arm64: dts: rockchip: rk3328: Use new define for RK3328 pins

[firefly-linux-kernel-4.4.55.git] / arch / arm64 / Kconfig

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 7107dc965f329b4883a79ae051664baf0d2ac80e..4bda2c06fe0543cd3356877c5bfd61c3a4f21a17 100644 (file)
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -13,6 +13,7 @@ config ARM64
        select ARCH_WANT_OPTIONAL_GPIOLIB
        select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
        select ARCH_WANT_FRAME_POINTERS
        select ARCH_WANT_OPTIONAL_GPIOLIB
        select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
        select ARCH_WANT_FRAME_POINTERS

+       select ARCH_HAS_UBSAN_SANITIZE_ALL

        select ARM_AMBA
        select ARM_ARCH_TIMER
        select ARM_GIC
        select ARM_AMBA
        select ARM_ARCH_TIMER
        select ARM_GIC


@@ -48,9 +49,13 @@ config ARM64
        select HAVE_ALIGNED_STRUCT_PAGE if SLUB
        select HAVE_ARCH_AUDITSYSCALL
        select HAVE_ARCH_BITREVERSE
        select HAVE_ALIGNED_STRUCT_PAGE if SLUB
        select HAVE_ARCH_AUDITSYSCALL
        select HAVE_ARCH_BITREVERSE

+       select HAVE_ARCH_HARDENED_USERCOPY
+       select HAVE_ARCH_HUGE_VMAP

        select HAVE_ARCH_JUMP_LABEL
        select HAVE_ARCH_KASAN if SPARSEMEM_VMEMMAP && !(ARM64_16K_PAGES && ARM64_VA_BITS_48)
        select HAVE_ARCH_KGDB
        select HAVE_ARCH_JUMP_LABEL
        select HAVE_ARCH_KASAN if SPARSEMEM_VMEMMAP && !(ARM64_16K_PAGES && ARM64_VA_BITS_48)
        select HAVE_ARCH_KGDB

+       select HAVE_ARCH_MMAP_RND_BITS
+       select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT

        select HAVE_ARCH_SECCOMP_FILTER
        select HAVE_ARCH_TRACEHOOK
        select HAVE_BPF_JIT
        select HAVE_ARCH_SECCOMP_FILTER
        select HAVE_ARCH_TRACEHOOK
        select HAVE_BPF_JIT


@@ -70,6 +75,7 @@ config ARM64
        select HAVE_FUNCTION_GRAPH_TRACER
        select HAVE_GENERIC_DMA_COHERENT
        select HAVE_HW_BREAKPOINT if PERF_EVENTS
        select HAVE_FUNCTION_GRAPH_TRACER
        select HAVE_GENERIC_DMA_COHERENT
        select HAVE_HW_BREAKPOINT if PERF_EVENTS

+       select HAVE_IRQ_TIME_ACCOUNTING

        select HAVE_MEMBLOCK
        select HAVE_PATA_PLATFORM
        select HAVE_PERF_EVENTS
        select HAVE_MEMBLOCK
        select HAVE_PATA_PLATFORM
        select HAVE_PERF_EVENTS


@@ -108,9 +114,40 @@ config ARCH_PHYS_ADDR_T_64BIT
 config MMU
        def_bool y
 
 config MMU
        def_bool y
 

+config ARCH_MMAP_RND_BITS_MIN
+       default 14 if ARM64_64K_PAGES
+       default 16 if ARM64_16K_PAGES
+       default 18
+
+# max bits determined by the following formula:
+#  VA_BITS - PAGE_SHIFT - 3
+config ARCH_MMAP_RND_BITS_MAX
+       default 19 if ARM64_VA_BITS=36
+       default 24 if ARM64_VA_BITS=39
+       default 27 if ARM64_VA_BITS=42
+       default 30 if ARM64_VA_BITS=47
+       default 29 if ARM64_VA_BITS=48 && ARM64_64K_PAGES
+       default 31 if ARM64_VA_BITS=48 && ARM64_16K_PAGES
+       default 33 if ARM64_VA_BITS=48
+       default 14 if ARM64_64K_PAGES
+       default 16 if ARM64_16K_PAGES
+       default 18
+
+config ARCH_MMAP_RND_COMPAT_BITS_MIN
+       default 7 if ARM64_64K_PAGES
+       default 9 if ARM64_16K_PAGES
+       default 11
+
+config ARCH_MMAP_RND_COMPAT_BITS_MAX
+       default 16
+

 config NO_IOPORT_MAP
        def_bool y if !PCI
 
 config NO_IOPORT_MAP
        def_bool y if !PCI
 

+config ILLEGAL_POINTER_VALUE
+       hex
+       default 0xdead000000000000
+

 config STACKTRACE_SUPPORT
        def_bool y
 
 config STACKTRACE_SUPPORT
        def_bool y
 


@@ -366,6 +403,7 @@ config ARM64_ERRATUM_843419
        bool "Cortex-A53: 843419: A load or store might access an incorrect address"
        depends on MODULES
        default y
        bool "Cortex-A53: 843419: A load or store might access an incorrect address"
        depends on MODULES
        default y

+       select ARM64_MODULE_CMODEL_LARGE

        help
          This option builds kernel modules using the large memory model in
          order to avoid the use of the ADRP instruction, which can cause
        help
          This option builds kernel modules using the large memory model in
          order to avoid the use of the ADRP instruction, which can cause


@@ -530,6 +568,9 @@ config HOTPLUG_CPU
 source kernel/Kconfig.preempt
 source kernel/Kconfig.hz
 
 source kernel/Kconfig.preempt
 source kernel/Kconfig.hz
 

+config ARCH_SUPPORTS_DEBUG_PAGEALLOC
+       def_bool y
+

 config ARCH_HAS_HOLES_MEMORYMODEL
        def_bool y if SPARSEMEM
 
 config ARCH_HAS_HOLES_MEMORYMODEL
        def_bool y if SPARSEMEM
 


@@ -553,9 +594,6 @@ config HW_PERF_EVENTS
 config SYS_SUPPORTS_HUGETLBFS
        def_bool y
 
 config SYS_SUPPORTS_HUGETLBFS
        def_bool y
 

-config ARCH_WANT_GENERAL_HUGETLB
-       def_bool y
-

 config ARCH_WANT_HUGE_PMD_SHARE
        def_bool y if ARM64_4K_PAGES || (ARM64_16K_PAGES && !ARM64_VA_BITS_36)
 
 config ARCH_WANT_HUGE_PMD_SHARE
        def_bool y if ARM64_4K_PAGES || (ARM64_16K_PAGES && !ARM64_VA_BITS_36)
 


@@ -681,6 +719,14 @@ config SETEND_EMULATION
          If unsure, say Y
 endif
 
          If unsure, say Y
 endif
 

+config ARM64_SW_TTBR0_PAN
+       bool "Emulate Privileged Access Never using TTBR0_EL1 switching"
+       help
+         Enabling this option prevents the kernel from accessing
+         user-space memory directly by pointing TTBR0_EL1 to a reserved
+         zeroed area and reserved ASID. The user access routines
+         restore the valid TTBR0_EL1 temporarily.
+

 menu "ARMv8.1 architectural features"
 
 config ARM64_HW_AFDBM
 menu "ARMv8.1 architectural features"
 
 config ARM64_HW_AFDBM


@@ -728,10 +774,93 @@ config ARM64_LSE_ATOMICS
 
 endmenu
 
 
 endmenu
 

+config ARM64_UAO
+       bool "Enable support for User Access Override (UAO)"
+       default y
+       help
+         User Access Override (UAO; part of the ARMv8.2 Extensions)
+         causes the 'unprivileged' variant of the load/store instructions to
+         be overriden to be privileged.
+
+         This option changes get_user() and friends to use the 'unprivileged'
+         variant of the load/store instructions. This ensures that user-space
+         really did have access to the supplied memory. When addr_limit is
+         set to kernel memory the UAO bit will be set, allowing privileged
+         access to kernel memory.
+
+         Choosing this option will cause copy_to_user() et al to use user-space
+         memory permissions.
+
+         The feature is detected at runtime, the kernel will use the
+         regular load/store instructions if the cpu does not implement the
+         feature.
+
+config ARM64_MODULE_CMODEL_LARGE
+       bool
+
+config ARM64_MODULE_PLTS
+       bool
+       select ARM64_MODULE_CMODEL_LARGE
+       select HAVE_MOD_ARCH_SPECIFIC
+
+config RELOCATABLE
+       bool
+       help
+         This builds the kernel as a Position Independent Executable (PIE),
+         which retains all relocation metadata required to relocate the
+         kernel binary at runtime to a different virtual address than the
+         address it was linked at.
+         Since AArch64 uses the RELA relocation format, this requires a
+         relocation pass at runtime even if the kernel is loaded at the
+         same address it was linked at.
+
+config RANDOMIZE_BASE
+       bool "Randomize the address of the kernel image"
+       select ARM64_MODULE_PLTS if MODULES
+       select RELOCATABLE
+       help
+         Randomizes the virtual address at which the kernel image is
+         loaded, as a security feature that deters exploit attempts
+         relying on knowledge of the location of kernel internals.
+
+         It is the bootloader's job to provide entropy, by passing a
+         random u64 value in /chosen/kaslr-seed at kernel entry.
+
+         When booting via the UEFI stub, it will invoke the firmware's
+         EFI_RNG_PROTOCOL implementation (if available) to supply entropy
+         to the kernel proper. In addition, it will randomise the physical
+         location of the kernel Image as well.
+
+         If unsure, say N.
+
+config RANDOMIZE_MODULE_REGION_FULL
+       bool "Randomize the module region independently from the core kernel"
+       depends on RANDOMIZE_BASE && !DYNAMIC_FTRACE
+       default y
+       help
+         Randomizes the location of the module region without considering the
+         location of the core kernel. This way, it is impossible for modules
+         to leak information about the location of core kernel data structures
+         but it does imply that function calls between modules and the core
+         kernel will need to be resolved via veneers in the module PLT.
+
+         When this option is not set, the module region will be randomized over
+         a limited range that contains the [_stext, _etext] interval of the
+         core kernel, so branch relocations are always in range.
+

 endmenu
 
 menu "Boot options"
 
 endmenu
 
 menu "Boot options"
 

+config ARM64_ACPI_PARKING_PROTOCOL
+       bool "Enable support for the ARM64 ACPI parking protocol"
+       depends on ACPI
+       help
+         Enable support for the ARM64 ACPI parking protocol. If disabled
+         the kernel will not allow booting through the ARM64 ACPI parking
+         protocol even if the corresponding data is present in the ACPI
+         MADT table.
+

 config CMDLINE
        string "Default kernel command string"
        default ""
 config CMDLINE
        string "Default kernel command string"
        default ""


@@ -740,6 +869,23 @@ config CMDLINE
          entering them here. As a minimum, you should specify the the
          root device (e.g. root=/dev/nfs).
 
          entering them here. As a minimum, you should specify the the
          root device (e.g. root=/dev/nfs).
 

+choice
+       prompt "Kernel command line type" if CMDLINE != ""
+       default CMDLINE_FROM_BOOTLOADER
+
+config CMDLINE_FROM_BOOTLOADER
+       bool "Use bootloader kernel arguments if available"
+       help
+         Uses the command-line options passed by the boot loader. If
+         the boot loader doesn't provide any, the default kernel command
+         string provided in CMDLINE will be used.
+
+config CMDLINE_EXTEND
+       bool "Extend bootloader kernel arguments"
+       help
+         The command-line arguments provided by the boot loader will be
+         appended to the default kernel command string.
+

 config CMDLINE_FORCE
        bool "Always use the default kernel command string"
        help
 config CMDLINE_FORCE
        bool "Always use the default kernel command string"
        help


@@ -747,6 +893,7 @@ config CMDLINE_FORCE
          loader passes other arguments to the kernel.
          This is useful if you cannot or don't want to change the
          command-line options your boot loader passes to the kernel.
          loader passes other arguments to the kernel.
          This is useful if you cannot or don't want to change the
          command-line options your boot loader passes to the kernel.

+endchoice

 
 config EFI_STUB
        bool
 
 config EFI_STUB
        bool


@@ -779,6 +926,21 @@ config DMI
          However, even with this option, the resultant kernel should
          continue to boot on existing non-UEFI platforms.
 
          However, even with this option, the resultant kernel should
          continue to boot on existing non-UEFI platforms.
 

+config BUILD_ARM64_APPENDED_DTB_IMAGE
+       bool "Build a concatenated Image.gz/dtb by default"
+       depends on OF
+       help
+         Enabling this option will cause a concatenated Image.gz and list of
+         DTBs to be built by default (instead of a standalone Image.gz.)
+         The image will built in arch/arm64/boot/Image.gz-dtb
+
+config BUILD_ARM64_APPENDED_DTB_IMAGE_NAMES
+       string "Default dtb names"
+       depends on BUILD_ARM64_APPENDED_DTB_IMAGE
+       help
+         Space separated list of names of dtbs to append when
+         building a concatenated Image.gz-dtb.
+

 endmenu
 
 menu "Userspace binary formats"
 endmenu
 
 menu "Userspace binary formats"


@@ -814,6 +976,14 @@ menu "Power management options"
 
 source "kernel/power/Kconfig"
 
 
 source "kernel/power/Kconfig"
 

+config ARCH_HIBERNATION_POSSIBLE
+       def_bool y
+       depends on CPU_PM
+
+config ARCH_HIBERNATION_HEADER
+       def_bool y
+       depends on HIBERNATION
+

 config ARCH_SUSPEND_POSSIBLE
        def_bool y
 
 config ARCH_SUSPEND_POSSIBLE
        def_bool y