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1422 Commits (62be257e986dab439537b3e1c19ef746a13e1860)

Author SHA1 Message Date
Mike Rapoport 26fb3dae0a memblock: drop memblock_alloc_*_nopanic() variants
As all the memblock allocation functions return NULL in case of error
rather than panic(), the duplicates with _nopanic suffix can be removed.

Link: http://lkml.kernel.org/r/1548057848-15136-22-git-send-email-rppt@linux.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Petr Mladek <pmladek@suse.com>		[printk]
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Christoph Hellwig <hch@lst.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Guo Ren <guoren@kernel.org>
Cc: Guo Ren <ren_guo@c-sky.com>				[c-sky]
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Juergen Gross <jgross@suse.com>			[Xen]
Cc: Mark Salter <msalter@redhat.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-12 10:04:02 -07:00
Linus Torvalds 3d8dfe75ef arm64 updates for 5.1:
- Pseudo NMI support for arm64 using GICv3 interrupt priorities
 
 - uaccess macros clean-up (unsafe user accessors also merged but
   reverted, waiting for objtool support on arm64)
 
 - ptrace regsets for Pointer Authentication (ARMv8.3) key management
 
 - inX() ordering w.r.t. delay() on arm64 and riscv (acks in place by the
   riscv maintainers)
 
 - arm64/perf updates: PMU bindings converted to json-schema, unused
   variable and misleading comment removed
 
 - arm64/debug fixes to ensure checking of the triggering exception level
   and to avoid the propagation of the UNKNOWN FAR value into the si_code
   for debug signals
 
 - Workaround for Fujitsu A64FX erratum 010001
 
 - lib/raid6 ARM NEON optimisations
 
 - NR_CPUS now defaults to 256 on arm64
 
 - Minor clean-ups (documentation/comments, Kconfig warning, unused
   asm-offsets, clang warnings)
 
 - MAINTAINERS update for list information to the ARM64 ACPI entry
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Catalin Marinas:

 - Pseudo NMI support for arm64 using GICv3 interrupt priorities

 - uaccess macros clean-up (unsafe user accessors also merged but
   reverted, waiting for objtool support on arm64)

 - ptrace regsets for Pointer Authentication (ARMv8.3) key management

 - inX() ordering w.r.t. delay() on arm64 and riscv (acks in place by
   the riscv maintainers)

 - arm64/perf updates: PMU bindings converted to json-schema, unused
   variable and misleading comment removed

 - arm64/debug fixes to ensure checking of the triggering exception
   level and to avoid the propagation of the UNKNOWN FAR value into the
   si_code for debug signals

 - Workaround for Fujitsu A64FX erratum 010001

 - lib/raid6 ARM NEON optimisations

 - NR_CPUS now defaults to 256 on arm64

 - Minor clean-ups (documentation/comments, Kconfig warning, unused
   asm-offsets, clang warnings)

 - MAINTAINERS update for list information to the ARM64 ACPI entry

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (54 commits)
  arm64: mmu: drop paging_init comments
  arm64: debug: Ensure debug handlers check triggering exception level
  arm64: debug: Don't propagate UNKNOWN FAR into si_code for debug signals
  Revert "arm64: uaccess: Implement unsafe accessors"
  arm64: avoid clang warning about self-assignment
  arm64: Kconfig.platforms: fix warning unmet direct dependencies
  lib/raid6: arm: optimize away a mask operation in NEON recovery routine
  lib/raid6: use vdupq_n_u8 to avoid endianness warnings
  arm64: io: Hook up __io_par() for inX() ordering
  riscv: io: Update __io_[p]ar() macros to take an argument
  asm-generic/io: Pass result of I/O accessor to __io_[p]ar()
  arm64: Add workaround for Fujitsu A64FX erratum 010001
  arm64: Rename get_thread_info()
  arm64: Remove documentation about TIF_USEDFPU
  arm64: irqflags: Fix clang build warnings
  arm64: Enable the support of pseudo-NMIs
  arm64: Skip irqflags tracing for NMI in IRQs disabled context
  arm64: Skip preemption when exiting an NMI
  arm64: Handle serror in NMI context
  irqchip/gic-v3: Allow interrupts to be set as pseudo-NMI
  ...
2019-03-10 10:17:23 -07:00
Linus Torvalds 564e741171 Merge branch 'stable/for-linus-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/ibft
Pull ibft updates from Konrad Rzeszutek Wilk:
 "Two tiny fixes - a missing break, and upgrading the subsystem to use
  modern macros"

* 'stable/for-linus-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/ibft:
  iscsi_ibft: use virt_to_phys instead of isa_virt_to_bus
  iscsi_ibft: Fix missing break in switch statement
2019-03-08 09:50:14 -08:00
Linus Torvalds e431f2d74e Driver core patches for 5.1-rc1
Here is the big driver core patchset for 5.1-rc1
 
 More patches than "normal" here this merge window, due to some work in
 the driver core by Alexander Duyck to rework the async probe
 functionality to work better for a number of devices, and independant
 work from Rafael for the device link functionality to make it work
 "correctly".
 
 Also in here is:
 	- lots of BUS_ATTR() removals, the macro is about to go away
 	- firmware test fixups
 	- ihex fixups and simplification
 	- component additions (also includes i915 patches)
 	- lots of minor coding style fixups and cleanups.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here is the big driver core patchset for 5.1-rc1

  More patches than "normal" here this merge window, due to some work in
  the driver core by Alexander Duyck to rework the async probe
  functionality to work better for a number of devices, and independant
  work from Rafael for the device link functionality to make it work
  "correctly".

  Also in here is:

   - lots of BUS_ATTR() removals, the macro is about to go away

   - firmware test fixups

   - ihex fixups and simplification

   - component additions (also includes i915 patches)

   - lots of minor coding style fixups and cleanups.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'driver-core-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (65 commits)
  driver core: platform: remove misleading err_alloc label
  platform: set of_node in platform_device_register_full()
  firmware: hardcode the debug message for -ENOENT
  driver core: Add missing description of new struct device_link field
  driver core: Fix PM-runtime for links added during consumer probe
  drivers/component: kerneldoc polish
  async: Add cmdline option to specify drivers to be async probed
  driver core: Fix possible supplier PM-usage counter imbalance
  PM-runtime: Fix __pm_runtime_set_status() race with runtime resume
  driver: platform: Support parsing GpioInt 0 in platform_get_irq()
  selftests: firmware: fix verify_reqs() return value
  Revert "selftests: firmware: remove use of non-standard diff -Z option"
  Revert "selftests: firmware: add CONFIG_FW_LOADER_USER_HELPER_FALLBACK to config"
  device: Fix comment for driver_data in struct device
  kernfs: Allocating memory for kernfs_iattrs with kmem_cache.
  sysfs: remove unused include of kernfs-internal.h
  driver core: Postpone DMA tear-down until after devres release
  driver core: Document limitation related to DL_FLAG_RPM_ACTIVE
  PM-runtime: Take suppliers into account in __pm_runtime_set_status()
  device.h: Add __cold to dev_<level> logging functions
  ...
2019-03-06 14:52:48 -08:00
Linus Torvalds d276709ce6 ACPI updates for 5.1-rc1
- Update the ACPICA code in the kernel to upstream revision 20190215
    including ACPI 6.3 support and more:
    * New predefined methods: _NBS, _NCH, _NIC, _NIH, and _NIG (Erik
      Schmauss).
    * Update of the PCC Identifier structure in PDTT (Erik Schmauss).
    * Support for new Generic Affinity Structure subtable in SRAT
      (Erik Schmauss).
    * New PCC operation region support (Erik Schmauss).
    * Support for GICC statistical profiling for MADT (Erik Schmauss).
    * New Error Disconnect Recover notification support (Erik Schmauss).
    * New PPTT Processor Structure Flags fields support (Erik Schmauss).
    * ACPI 6.3 HMAT updates (Erik Schmauss).
    * GTDT Revision 3 support (Erik Schmauss).
    * Legacy module-level code (MLC) support removal (Erik Schmauss).
    * Update/clarification of messages for control method failures
      (Bob Moore).
    * Warning on creation of a zero-length opregion (Bob Moore).
    * acpiexec option to dump extra info for memory leaks (Bob Moore).
    * More ACPI error to firmware error conversions (Bob Moore).
    * Debugger fix (Bob Moore).
    * Copyrights update (Bob Moore).
 
  - Clean up sleep states support code in ACPICA (Christoph Hellwig).
 
  - Rework in_nmi() handling in the APEI code and add suppor for the
    ARM Software Delegated Exception Interface (SDEI) to it (James
    Morse).
 
  - Fix possible out-of-bounds accesses in BERT-related core (Ross
    Lagerwall).
 
  - Fix the APEI code parsing HEST that includes a Deferred Machine
    Check subtable (Yazen Ghannam).
 
  - Use DEFINE_DEBUGFS_ATTRIBUTE for APEI-related debugfs files
    (YueHaibing).
 
  - Switch the APEI ERST code to the new generic UUID API (Andy
    Shevchenko).
 
  - Update the MAINTAINERS entry for APEI (Borislav Petkov).
 
  - Fix and clean up the ACPI EC driver (Rafael Wysocki, Zhang Rui).
 
  - Fix DMI checks handling in the ACPI backlight driver and add the
    "Lunch Box" chassis-type check to it (Hans de Goede).
 
  - Add support for using ACPI table overrides included in built-in
    initrd images (Shunyong Yang).
 
  - Update ACPI device enumeration to treat the PWM2 device as "always
    present" on Lenovo Yoga Book (Yauhen Kharuzhy).
 
  - Fix up the enumeration of device objects with the PRP0001 device
    ID (Andy Shevchenko).
 
  - Clean up PPTT parsing error messages (John Garry).
 
  - Clean up debugfs files creation handling (Greg Kroah-Hartman,
    Rafael Wysocki).
 
  - Clean up the ACPI DPTF Makefile (Masahiro Yamada).
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Merge tag 'acpi-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI updates from Rafael Wysocki:
 "These are ACPICA updates including ACPI 6.3 support among other
  things, APEI updates including the ARM Software Delegated Exception
  Interface (SDEI) support, ACPI EC driver fixes and cleanups and other
  assorted improvements.

  Specifics:

   - Update the ACPICA code in the kernel to upstream revision 20190215
     including ACPI 6.3 support and more:
      * New predefined methods: _NBS, _NCH, _NIC, _NIH, and _NIG (Erik
        Schmauss).
      * Update of the PCC Identifier structure in PDTT (Erik Schmauss).
      * Support for new Generic Affinity Structure subtable in SRAT
        (Erik Schmauss).
      * New PCC operation region support (Erik Schmauss).
      * Support for GICC statistical profiling for MADT (Erik Schmauss).
      * New Error Disconnect Recover notification support (Erik
        Schmauss).
      * New PPTT Processor Structure Flags fields support (Erik
        Schmauss).
      * ACPI 6.3 HMAT updates (Erik Schmauss).
      * GTDT Revision 3 support (Erik Schmauss).
      * Legacy module-level code (MLC) support removal (Erik Schmauss).
      * Update/clarification of messages for control method failures
        (Bob Moore).
      * Warning on creation of a zero-length opregion (Bob Moore).
      * acpiexec option to dump extra info for memory leaks (Bob Moore).
      * More ACPI error to firmware error conversions (Bob Moore).
      * Debugger fix (Bob Moore).
      * Copyrights update (Bob Moore)

   - Clean up sleep states support code in ACPICA (Christoph Hellwig)

   - Rework in_nmi() handling in the APEI code and add suppor for the
     ARM Software Delegated Exception Interface (SDEI) to it (James
     Morse)

   - Fix possible out-of-bounds accesses in BERT-related core (Ross
     Lagerwall)

   - Fix the APEI code parsing HEST that includes a Deferred Machine
     Check subtable (Yazen Ghannam)

   - Use DEFINE_DEBUGFS_ATTRIBUTE for APEI-related debugfs files
     (YueHaibing)

   - Switch the APEI ERST code to the new generic UUID API (Andy
     Shevchenko)

   - Update the MAINTAINERS entry for APEI (Borislav Petkov)

   - Fix and clean up the ACPI EC driver (Rafael Wysocki, Zhang Rui)

   - Fix DMI checks handling in the ACPI backlight driver and add the
     "Lunch Box" chassis-type check to it (Hans de Goede)

   - Add support for using ACPI table overrides included in built-in
     initrd images (Shunyong Yang)

   - Update ACPI device enumeration to treat the PWM2 device as "always
     present" on Lenovo Yoga Book (Yauhen Kharuzhy)

   - Fix up the enumeration of device objects with the PRP0001 device ID
     (Andy Shevchenko)

   - Clean up PPTT parsing error messages (John Garry)

   - Clean up debugfs files creation handling (Greg Kroah-Hartman,
     Rafael Wysocki)

   - Clean up the ACPI DPTF Makefile (Masahiro Yamada)"

* tag 'acpi-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (65 commits)
  ACPI / bus: Respect PRP0001 when retrieving device match data
  ACPICA: Update version to 20190215
  ACPI/ACPICA: Trivial: fix spelling mistakes and fix whitespace formatting
  ACPICA: ACPI 6.3: add GTDT Revision 3 support
  ACPICA: ACPI 6.3: HMAT updates
  ACPICA: ACPI 6.3: PPTT add additional fields in Processor Structure Flags
  ACPICA: ACPI 6.3: add Error Disconnect Recover Notification value
  ACPICA: ACPI 6.3: MADT: add support for statistical profiling in GICC
  ACPICA: ACPI 6.3: add PCC operation region support for AML interpreter
  efi: cper: Fix possible out-of-bounds access
  ACPI: APEI: Fix possible out-of-bounds access to BERT region
  ACPICA: ACPI 6.3: SRAT: add Generic Affinity Structure subtable
  ACPICA: ACPI 6.3: Add Trigger order to PCC Identifier structure in PDTT
  ACPICA: ACPI 6.3: Adding predefined methods _NBS, _NCH, _NIC, _NIH, and _NIG
  ACPICA: Update/clarify messages for control method failures
  ACPICA: Debugger: Fix possible fault with the "test objects" command
  ACPICA: Interpreter: Emit warning for creation of a zero-length op region
  ACPICA: Remove legacy module-level code support
  ACPI / x86: Make PWM2 device always present at Lenovo Yoga Book
  ACPI / video: Extend chassis-type detection with a "Lunch Box" check
  ..
2019-03-06 13:33:11 -08:00
Linus Torvalds 384d11fa0e ARM: SoC driver updates for 5.1
As usual, the drivers/tee and drivers/reset subsystems get merged
 here, with the expected set of smaller updates and some new hardware
 support. The tee subsystem now supports device drivers to be attached
 to a tee, the first example here is a random number driver with its
 implementation in the secure world.
 
 Three new power domain drivers get added for specific chip families:
  - Broadcom BCM283x chips (used in Raspberry Pi)
  - Qualcomm Snapdragon phone chips
  - Xilinx ZynqMP FPGA SoCs
 
 One new driver is added to talk to the BPMP firmware on NVIDIA
 Tegra210
 
 Existing drivers are extended for new SoC variants from NXP,
 NVIDIA, Amlogic and Qualcomm.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "As usual, the drivers/tee and drivers/reset subsystems get merged
  here, with the expected set of smaller updates and some new hardware
  support. The tee subsystem now supports device drivers to be attached
  to a tee, the first example here is a random number driver with its
  implementation in the secure world.

  Three new power domain drivers get added for specific chip families:
   - Broadcom BCM283x chips (used in Raspberry Pi)
   - Qualcomm Snapdragon phone chips
   - Xilinx ZynqMP FPGA SoCs

  One new driver is added to talk to the BPMP firmware on NVIDIA
  Tegra210

  Existing drivers are extended for new SoC variants from NXP, NVIDIA,
  Amlogic and Qualcomm"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (113 commits)
  tee: optee: update optee_msg.h and optee_smc.h to dual license
  tee: add cancellation support to client interface
  dpaa2-eth: configure the cache stashing amount on a queue
  soc: fsl: dpio: configure cache stashing destination
  soc: fsl: dpio: enable frame data cache stashing per software portal
  soc: fsl: guts: make fsl_guts_get_svr() static
  hwrng: make symbol 'optee_rng_id_table' static
  tee: optee: Fix unsigned comparison with less than zero
  hwrng: Fix unsigned comparison with less than zero
  tee: fix possible error pointer ctx dereferencing
  hwrng: optee: Initialize some structs using memset instead of braces
  tee: optee: Initialize some structs using memset instead of braces
  soc: fsl: dpio: fix memory leak of a struct qbman on error exit path
  clk: tegra: dfll: Make symbol 'tegra210_cpu_cvb_tables' static
  soc: qcom: llcc-slice: Fix typos
  qcom: soc: llcc-slice: Consolidate some code
  qcom: soc: llcc-slice: Clear the global drv_data pointer on error
  drivers: soc: xilinx: Add ZynqMP power domain driver
  firmware: xilinx: Add APIs to control node status/power
  dt-bindings: power: Add ZynqMP power domain bindings
  ...
2019-03-06 09:41:12 -08:00
Linus Torvalds c8f5ed6ef9 Merge branch 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI updates from Ingo Molnar:
 "The main EFI changes in this cycle were:

   - Use 32-bit alignment for efi_guid_t

   - Allow the SetVirtualAddressMap() call to be omitted

   - Implement earlycon=efifb based on existing earlyprintk code

   - Various minor fixes and code cleanups from Sai, Ard and me"

* 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi: Fix build error due to enum collision between efi.h and ima.h
  efi/x86: Convert x86 EFI earlyprintk into generic earlycon implementation
  x86: Make ARCH_USE_MEMREMAP_PROT a generic Kconfig symbol
  efi/arm/arm64: Allow SetVirtualAddressMap() to be omitted
  efi: Replace GPL license boilerplate with SPDX headers
  efi/fdt: Apply more cleanups
  efi: Use 32-bit alignment for efi_guid_t
  efi/memattr: Don't bail on zero VA if it equals the region's PA
  x86/efi: Mark can_free_region() as an __init function
2019-03-06 07:13:56 -08:00
Rafael J. Wysocki dcaed592b2 Merge branch 'acpi-apei'
* acpi-apei: (29 commits)
  efi: cper: Fix possible out-of-bounds access
  ACPI: APEI: Fix possible out-of-bounds access to BERT region
  MAINTAINERS: Add James Morse to the list of APEI reviewers
  ACPI / APEI: Add support for the SDEI GHES Notification type
  firmware: arm_sdei: Add ACPI GHES registration helper
  ACPI / APEI: Use separate fixmap pages for arm64 NMI-like notifications
  ACPI / APEI: Only use queued estatus entry during in_nmi_queue_one_entry()
  ACPI / APEI: Split ghes_read_estatus() to allow a peek at the CPER length
  ACPI / APEI: Make GHES estatus header validation more user friendly
  ACPI / APEI: Pass ghes and estatus separately to avoid a later copy
  ACPI / APEI: Let the notification helper specify the fixmap slot
  ACPI / APEI: Move locking to the notification helper
  arm64: KVM/mm: Move SEA handling behind a single 'claim' interface
  KVM: arm/arm64: Add kvm_ras.h to collect kvm specific RAS plumbing
  ACPI / APEI: Switch NOTIFY_SEA to use the estatus queue
  ACPI / APEI: Move NOTIFY_SEA between the estatus-queue and NOTIFY_NMI
  ACPI / APEI: Don't allow ghes_ack_error() to mask earlier errors
  ACPI / APEI: Generalise the estatus queue's notify code
  ACPI / APEI: Don't update struct ghes' flags in read/clear estatus
  ACPI / APEI: Remove spurious GHES_TO_CLEAR check
  ...
2019-03-04 11:16:35 +01:00
Ross Lagerwall 45b14a4ffc efi: cper: Fix possible out-of-bounds access
When checking a generic status block, we iterate over all the generic
data blocks. The loop condition only checks that the start of the
generic data block is valid (within estatus->data_length) but not the
whole block. Because the size of data blocks (excluding error data) may
vary depending on the revision and the revision is contained within the
data block, ensure that enough of the current data block is valid before
dereferencing any members otherwise an out-of-bounds access may occur if
estatus->data_length is invalid.

This relies on the fact that struct acpi_hest_generic_data_v300 is a
superset of the earlier version.  Also rework the other checks to avoid
potential underflow.

Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Acked-by: Borislav Petkov <bp@suse.de>
Tested-by: Tyler Baicar <baicar.tyler@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-02-20 10:34:35 +01:00
Linus Torvalds 2fee036af0 Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI fixes from Ingo Molnar:
 "This tree reverts a GICv3 commit (which was broken) and fixes it in
  another way, by adding a memblock build-time entries quirk for ARM64"

* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi/arm: Revert "Defer persistent reservations until after paging_init()"
  arm64, mm, efi: Account for GICv3 LPI tables in static memblock reserve table
2019-02-17 09:22:01 -08:00
Linus Torvalds 8d33316d52 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
 "Three changes:

   - An UV fix/quirk to pull UV BIOS calls into the efi_runtime_lock
     locking regime. (This done by aliasing __efi_uv_runtime_lock to
     efi_runtime_lock, which should make the quirk nature obvious and
     maintain the general policy that the EFI lock (name...) isn't
     exposed to drivers.)

   - Our version of MAGA: Make a.out Great Again.

   - Add a new Intel model name enumerator to an upstream header to help
     reduce dependencies going forward"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/platform/UV: Use efi_runtime_lock to serialise BIOS calls
  x86/CPU: Add Icelake model number
  x86/a.out: Clear the dump structure initially
2019-02-17 08:44:38 -08:00
Ard Biesheuvel 582a32e708 efi/arm: Revert "Defer persistent reservations until after paging_init()"
This reverts commit eff8962888, which
deferred the processing of persistent memory reservations to a point
where the memory may have already been allocated and overwritten,
defeating the purpose.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20190215123333.21209-3-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-02-16 15:02:03 +01:00
Anders Roxell 5c418dc789 efi: Fix build error due to enum collision between efi.h and ima.h
The following commit:

  a893ea15d764 ("tpm: move tpm_chip definition to include/linux/tpm.h")

introduced a build error when both IMA and EFI are enabled:

    In file included from ../security/integrity/ima/ima_fs.c:30:
    ../security/integrity/ima/ima.h:176:7: error: redeclaration of enumerator "NONE"

What happens is that both headers (ima.h and efi.h) defines the same
'NONE' constant, and it broke when they started getting included from
the same file:

Rework to prefix the EFI enum with 'EFI_*'.

Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20190215165551.12220-2-ard.biesheuvel@linaro.org
[ Cleaned up the changelog a bit. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-02-16 12:18:55 +01:00
Arnd Bergmann 50b0225bf4 soc: ti: couple of non critical fixes for v5.1
- Fix the Clang warning for enum in Navigator dma
  - Simplify code in ti_sci with DEFINE_SHOW_ATTRIBUTE macro
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Merge tag 'drivers_soc_for_5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone into arm/drivers

soc: ti: couple of non critical fixes for v5.1

 - Fix the Clang warning for enum in Navigator dma
 - Simplify code in ti_sci with DEFINE_SHOW_ATTRIBUTE macro

* tag 'drivers_soc_for_5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone:
  soc: ti: knav_dma: Use proper enum in pktdma_init_chan
  firmware: ti_sci: Change to use DEFINE_SHOW_ATTRIBUTE macro

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-02-15 18:02:04 +01:00
Arnd Bergmann 187b4ac7df This pull request contains Broadcom ARM/ARM64/MIPS based SoCs changes
for 5.1, please pull the following:
 
 - Stefan updates the BCM2835 SoC driver with downstream properties and
   uses that to implement a reboot notifier to tell the VC4 firmware when
   Linux on the ARM CPU is rebooting
 
 - Eric adds a proper power domain driver for the BCM283x SoCs and
   updates a bunch of drivers to have a better and clearer Device Tree
   definition to support power domains/breaking up of functionality. This
   requires converting the existing watchdog driver into a MFD and then
   breaking up the functionality into separate drivers and finally
   updating the DTS files to leverage the power domains information.
 
 - Wei provides a fix for making a symbol static
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Merge tag 'arm-soc/for-5.1/drivers' of https://github.com/Broadcom/stblinux into arm/drivers

This pull request contains Broadcom ARM/ARM64/MIPS based SoCs changes
for 5.1, please pull the following:

- Stefan updates the BCM2835 SoC driver with downstream properties and
  uses that to implement a reboot notifier to tell the VC4 firmware when
  Linux on the ARM CPU is rebooting

- Eric adds a proper power domain driver for the BCM283x SoCs and
  updates a bunch of drivers to have a better and clearer Device Tree
  definition to support power domains/breaking up of functionality. This
  requires converting the existing watchdog driver into a MFD and then
  breaking up the functionality into separate drivers and finally
  updating the DTS files to leverage the power domains information.

- Wei provides a fix for making a symbol static

* tag 'arm-soc/for-5.1/drivers' of https://github.com/Broadcom/stblinux:
  ARM: bcm283x: Switch V3D over to using the PM driver instead of firmware.
  ARM: bcm283x: Extend the WDT DT node out to cover the whole PM block. (v4)
  soc: bcm: bcm2835-pm: Make local symbol static
  soc: bcm: Make PM driver default for BCM2835
  soc: bcm: bcm2835-pm: Add support for power domains under a new binding.
  bcm2835-pm: Move bcm2835-watchdog's DT probe to an MFD.
  dt-bindings: soc: Add a new binding for the BCM2835 PM node. (v4)
  firmware: raspberrypi: notify VC4 firmware of a reboot
  soc: bcm2835: sync firmware properties with downstream

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-02-15 18:01:17 +01:00
Arnd Bergmann f73e22d621 firmware: tegra: Changes for v5.1-rc1
These changes add support for BPMP on Tegra210.
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Merge tag 'tegra-for-5.1-firmware' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/drivers

firmware: tegra: Changes for v5.1-rc1

These changes add support for BPMP on Tegra210.

* tag 'tegra-for-5.1-firmware' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  firmware/tegra: Enable Tegra186 BPMP support on Tegra194
  firmware: tegra: Conditionally support SoC generations
  firmware: tegra: bpmp-tegra186: Remove unused includes
  firmware: tegra: add bpmp driver for Tegra210
  firmware: tegra: Refactor BPMP driver
  firmware: tegra: Reword messaging terminology

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-02-15 17:23:25 +01:00
Arnd Bergmann c9235d9996 i.MX drivers update for 5.1:
- Do not get GPCv2 driver depend on SOC_IMX8MQ since the driver is
    going to be used on more SoCs than just i.MX8MQ.
  - Add power domain information into SCU bindings document.
  - Add support of start/stop a CPU into imx firmware driver.
  - Support multiple address ranges per child node for imx-weim bus
    driver.
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Merge tag 'imx-drivers-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/drivers

i.MX drivers update for 5.1:
 - Do not get GPCv2 driver depend on SOC_IMX8MQ since the driver is
   going to be used on more SoCs than just i.MX8MQ.
 - Add power domain information into SCU bindings document.
 - Add support of start/stop a CPU into imx firmware driver.
 - Support multiple address ranges per child node for imx-weim bus
   driver.

* tag 'imx-drivers-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  firmware: imx: Add support to start/stop a CPU
  soc: imx: Break dependency on SOC_IMX8MQ for GPCv2
  firmware: imx: scu-pd: add fallback compatible string support
  dt-bindings: fsl: scu: add imx8qm scu power domain support
  dt-bindings: fsl: scu: add fallback compatible string for power domain
  bus: imx-weim: guard against timing configuration conflicts
  bus: imx-weim: support multiple address ranges per child node
  dt-bindings: bus: imx-weim: document multiple address ranges per child node
  soc: imx: gpcv2: handle reset clocks
  soc: imx: gpcv2: handle additional power-down bits in handshake register

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-02-15 17:17:57 +01:00
Hedi Berriche f331e766c4 x86/platform/UV: Use efi_runtime_lock to serialise BIOS calls
Calls into UV firmware must be protected against concurrency, expose the
efi_runtime_lock to the UV platform, and use it to serialise UV BIOS
calls.

Signed-off-by: Hedi Berriche <hedi.berriche@hpe.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Russ Anderson <rja@hpe.com>
Reviewed-by: Dimitri Sivanich <sivanich@hpe.com>
Reviewed-by: Mike Travis <mike.travis@hpe.com>
Cc: Andy Shevchenko <andy@infradead.org>
Cc: Bhupesh Sharma <bhsharma@redhat.com>
Cc: Darren Hart <dvhart@infradead.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: linux-efi <linux-efi@vger.kernel.org>
Cc: platform-driver-x86@vger.kernel.org
Cc: stable@vger.kernel.org # v4.9+
Cc: Steve Wahl <steve.wahl@hpe.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20190213193413.25560-5-hedi.berriche@hpe.com
2019-02-15 15:19:56 +01:00
Christoph Hellwig 8bd04c57fd iscsi_ibft: use virt_to_phys instead of isa_virt_to_bus
As far as I can tell IBFT is a firmware table and has nothing to do with
the good old ISA bus.  And even if it the two would be the same on x86
anyway.  So remove the isa_virt_to_bus call in preparation of eventually
removing that API entirely.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2019-02-12 13:15:36 -05:00
Gustavo A. R. Silva df997abeeb iscsi_ibft: Fix missing break in switch statement
Add missing break statement in order to prevent the code from falling
through to case ISCSI_BOOT_TGT_NAME, which is unnecessary.

This bug was found thanks to the ongoing efforts to enable
-Wimplicit-fallthrough.

Fixes: b33a84a384 ("ibft: convert iscsi_ibft module to iscsi boot lib")
Cc: stable@vger.kernel.org
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2019-02-12 13:15:36 -05:00
Jolly Shah e23d9c6d0d drivers: soc: xilinx: Add ZynqMP power domain driver
The zynqmp-genpd driver communicates the usage requirements
for logical power domains / devices to the platform FW.
FW is responsible for choosing appropriate power states,
taking Linux' usage information into account.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2019-02-12 13:38:16 +01:00
Rajan Vaja c1986ac3d4 firmware: xilinx: Add APIs to control node status/power
Add Xilinx ZynqMP firmware APIs to control node status
and power. These APIs allows turning on/off power domain
and setting capabilities of devices present in power domain.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2019-02-12 13:37:48 +01:00
Jolly Shah e178df31cf firmware: xilinx: Implement ZynqMP power management APIs
Add Xilinx ZynqMP firmware APIs to set suspend mode
and inform firmware that master has initialized its
own power management.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2019-02-12 13:36:23 +01:00
James Morse f96935d3bc firmware: arm_sdei: Add ACPI GHES registration helper
APEI's Generic Hardware Error Source structures do not describe
whether the SDEI event is shared or private, as this information is
discoverable via the API.

GHES needs to know whether an event is normal or critical to avoid
sharing locks or fixmap entries, but GHES shouldn't have to know about
the SDEI API.

Add a helper to register the GHES using the appropriate normal or
critical callback.

Signed-off-by: James Morse <james.morse@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-02-11 11:07:49 +01:00
Greg Kroah-Hartman 9481caf39b Merge 5.0-rc6 into driver-core-next
We need the debugfs fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-11 09:09:02 +01:00
Daniel Baluta d90bf296ae firmware: imx: Add support to start/stop a CPU
This is done via RPC call to SCU.

Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-02-11 10:00:47 +08:00
Linus Torvalds 46c291e277 ARM: SoC fixes for linux-5.0
This is a bit larger than normal, as we had not managed to send out
 a pull request before traveling for a week without my signing key.
 
 There are multiple code fixes for older bugs, all of which should
 get backported into stable kernels:
 
 - tango: one fix for multiplatform configurations broken on other
   platforms when tango is enabled
 - arm_scmi: device unregistration fix
 - iop32x: fix kernel oops from extraneous __init annotation
 - pxa: remove a double kfree
 - fsl qbman: close an interrupt clearing race
 
 The rest is the usual collection of smaller fixes for device tree
 files, on the renesas, allwinner, meson, omap, davinci, qualcomm
 and imx platforms. Some of these are for compile-time warnings,
 most are for board specific functionality that fails to work
 because of incorrect settings.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'armsoc-fixes-5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC fixes from Arnd Bergmann:
 "This is a bit larger than normal, as we had not managed to send out a
  pull request before traveling for a week without my signing key.

  There are multiple code fixes for older bugs, all of which should get
  backported into stable kernels:

   - tango: one fix for multiplatform configurations broken on other
     platforms when tango is enabled

   - arm_scmi: device unregistration fix

   - iop32x: fix kernel oops from extraneous __init annotation

   - pxa: remove a double kfree

   - fsl qbman: close an interrupt clearing race

  The rest is the usual collection of smaller fixes for device tree
  files, on the renesas, allwinner, meson, omap, davinci, qualcomm and
  imx platforms.

  Some of these are for compile-time warnings, most are for board
  specific functionality that fails to work because of incorrect
  settings"

* tag 'armsoc-fixes-5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (30 commits)
  ARM: tango: Improve ARCH_MULTIPLATFORM compatibility
  firmware: arm_scmi: provide the mandatory device release callback
  ARM: iop32x/n2100: fix PCI IRQ mapping
  arm64: dts: add msm8996 compatible to gicv3
  ARM: dts: am335x-shc.dts: fix wrong cd pin level
  ARM: dts: n900: fix mmc1 card detect gpio polarity
  ARM: dts: omap3-gta04: Fix graph_port warning
  ARM: pxa: ssp: unneeded to free devm_ allocated data
  ARM: dts: r8a7743: Convert to new LVDS DT bindings
  soc: fsl: qbman: avoid race in clearing QMan interrupt
  arm64: dts: renesas: r8a77965: Enable DMA for SCIF2
  arm64: dts: renesas: r8a7796: Enable DMA for SCIF2
  arm64: dts: renesas: r8a774a1: Enable DMA for SCIF2
  ARM: dts: da850: fix interrupt numbers for clocksource
  dt-bindings: imx8mq: Number clocks consecutively
  arm64: dts: meson: Fix mmc cd-gpios polarity
  ARM: dts: imx6sx: correct backward compatible of gpt
  ARM: dts: imx: replace gpio-key,wakeup with wakeup-source property
  ARM: dts: vf610-bk4: fix incorrect #address-cells for dspi3
  ARM: dts: meson8m2: mxiii-plus: mark the SD card detection GPIO active-low
  ...
2019-02-08 16:23:41 -08:00
Thierry Reding fe45ab5529 firmware/tegra: Enable Tegra186 BPMP support on Tegra194
The BPMP implementation on Tegra194 is mostly compatible with the
implementation on Tegra186, so make sure the latter is available when
support for Tegra194 is enabled.

Suggested-by: Timo Alho <talho@nvidia.com>
Reviewed-by: Timo Alho <talho@nvidia.com>
Tested-by: Timo Alho <talho@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2019-02-07 18:52:39 +01:00
Thierry Reding 79d031fcad firmware: tegra: Conditionally support SoC generations
Only include support for Tegra210 and Tegra186 in the BPMP driver if
support for those SoCs was selected. This fixes a build failure seen
on 32-bit ARM allmodconfig builds, but could also happen on 64-bit
ARM builds if either Tegra210 or Tegra186 were not selected.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Timo Alho <talho@nvidia.com>
Tested-by: Timo Alho <talho@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2019-02-07 18:52:19 +01:00
Julien Thierry 13b210ddf4 efi: Let architectures decide the flags that should be saved/restored
Currently, irqflags are saved before calling runtime services and
checked for mismatch on return.

Provide a pair of overridable macros to save and restore (if needed) the
state that need to be preserved on return from a runtime service.
This allows to check for flags that are not necesarly related to
irqflags.

Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: linux-efi@vger.kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2019-02-06 10:05:19 +00:00
Nava kishore Manne fe6f42cf6e firmware: xilinx: Add zynqmp_pm_get_chipid() API
This patch adds a new API to provide access to the
hardware related data like soc revision, IDCODE... etc.

Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2019-02-05 13:22:58 +01:00
Nathan Chancellor 67f52a9540 efi/arm: Don't expect a return value of ptdump_debugfs_register
As of commit e2a2e56e40 ("arm64: dump: no need to check return value
of debugfs_create functions") in the arm64 for-next/core branch,
ptdump_debugfs_register does not have a return value, which causes a
build error here:

drivers/firmware/efi/arm-runtime.c:51:9: error: returning 'void' from a
function with incompatible result type 'int'
        return ptdump_debugfs_register(&efi_ptdump_info, "efi_page_tables");
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.

The arm version is still awaiting acceptance [1] but in anticipation
of that patch being merged, restructure this function to call
ptdump_debugfs_register without expecting a return value.

[1]: https://lore.kernel.org/lkml/20190122144114.9816-3-gregkh@linuxfoundation.org/

Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2019-02-04 16:53:30 +00:00
Ard Biesheuvel 69c1f396f2 efi/x86: Convert x86 EFI earlyprintk into generic earlycon implementation
Move the x86 EFI earlyprintk implementation to a shared location under
drivers/firmware and tweak it slightly so we can expose it as an earlycon
implementation (which is generic) rather than earlyprintk (which is only
implemented for a few architectures)

This also involves switching to write-combine mappings by default (which
is required on ARM since device mappings lack memory semantics, and so
memcpy/memset may not be used on them), and adding support for shared
memory framebuffers on cache coherent non-x86 systems (which do not
tolerate mismatched attributes).

Note that 32-bit ARM does not populate its struct screen_info early
enough for earlycon=efifb to work, so it is disabled there.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Alexander Graf <agraf@suse.de>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
Cc: Jeffrey Hugo <jhugo@codeaurora.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Jones <pjones@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20190202094119.13230-10-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-02-04 08:27:30 +01:00
Ard Biesheuvel 4e46c2a956 efi/arm/arm64: Allow SetVirtualAddressMap() to be omitted
The UEFI spec revision 2.7 errata A section 8.4 has the following to
say about the virtual memory runtime services:

  "This section contains function definitions for the virtual memory
  support that may be optionally used by an operating system at runtime.
  If an operating system chooses to make EFI runtime service calls in a
  virtual addressing mode instead of the flat physical mode, then the
  operating system must use the services in this section to switch the
  EFI runtime services from flat physical addressing to virtual
  addressing."

So it is pretty clear that calling SetVirtualAddressMap() is entirely
optional, and so there is no point in doing so unless it achieves
anything useful for us.

This is not the case for 64-bit ARM. The identity mapping used by the
firmware is arbitrarily converted into another permutation of userland
addresses (i.e., bits [63:48] cleared), and the runtime code could easily
deal with the original layout in exactly the same way as it deals with
the converted layout. However, due to constraints related to page size
differences if the OS is not running with 4k pages, and related to
systems that may expose the individual sections of PE/COFF runtime
modules as different memory regions, creating the virtual layout is a
bit fiddly, and requires us to sort the memory map and reason about
adjacent regions with identical memory types etc etc.

So the obvious fix is to stop calling SetVirtualAddressMap() altogether
on arm64 systems. However, to avoid surprises, which are notoriously
hard to diagnose when it comes to OS<->firmware interactions, let's
start by making it an opt-out feature, and implement support for the
'efi=novamap' kernel command line parameter on ARM and arm64 systems.

( Note that 32-bit ARM generally does require SetVirtualAddressMap() to be
  used, given that the physical memory map and the kernel virtual address
  map are not guaranteed to be non-overlapping like on arm64. However,
  having support for efi=novamap,noruntime on 32-bit ARM, combined with
  the recently proposed support for earlycon=efifb, is likely to be useful
  to diagnose boot issues on such systems if they have no accessible serial
  port. )

Tested-by: Jeffrey Hugo <jhugo@codeaurora.org>
Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Tested-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Alexander Graf <agraf@suse.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Jones <pjones@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20190202094119.13230-8-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-02-04 08:27:26 +01:00
Ard Biesheuvel 4febfb8dd0 efi: Replace GPL license boilerplate with SPDX headers
Replace all GPL license blurbs with an equivalent SPDX header (most
files are GPLv2, some are GPLv2+). While at it, drop some outdated
header changelogs as well.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Alexander Graf <agraf@suse.de>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
Cc: Jeffrey Hugo <jhugo@codeaurora.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Jones <pjones@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20190202094119.13230-7-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-02-04 08:27:25 +01:00
Ingo Molnar ac9aff8ef9 efi/fdt: Apply more cleanups
Apply a number of cleanups:

 - Introduce fdt_setprop_*var() helper macros to simplify and shorten repetitive
   sequences - this also makes it less likely that the wrong variable size is
   passed in. This change makes a lot of the property-setting calls single-line
   and easier to read.

 - Harmonize comment style: capitalization, punctuation, whitespaces, etc.

 - Fix some whitespace noise in the libstub Makefile which I happened to notice.

 - Use the standard tabular initialization style:

    -       map.map =       &runtime_map;
    -       map.map_size =  &map_size;
    -       map.desc_size = &desc_size;
    -       map.desc_ver =  &desc_ver;
    -       map.key_ptr =   &mmap_key;
    -       map.buff_size = &buff_size;

    +       map.map         = &runtime_map;
    +       map.map_size    = &map_size;
    +       map.desc_size   = &desc_size;
    +       map.desc_ver    = &desc_ver;
    +       map.key_ptr     = &mmap_key;
    +       map.buff_size   = &buff_size;

 - Use tabular structure definition for better readability.

 - Make all pr*() lines single-line, even if they marginally exceed 80 cols - this
   makes them visually less intrusive.

 - Unbreak line breaks into single lines when the length exceeds 80 cols only
   marginally, for better readability.

 - Move assignment closer to the actual usage site.

 - Plus some other smaller cleanups, spelling fixes, etc.

No change in functionality intended.

[ ardb: move changes to upstream libfdt into local header. ]

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Alexander Graf <agraf@suse.de>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
Cc: Jeffrey Hugo <jhugo@codeaurora.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Jones <pjones@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20190202094119.13230-6-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-02-04 08:26:48 +01:00
Ard Biesheuvel 5de0fef023 efi/memattr: Don't bail on zero VA if it equals the region's PA
The EFI memory attributes code cross-references the EFI memory map with
the more granular EFI memory attributes table to ensure that they are in
sync before applying the strict permissions to the regions it describes.

Since we always install virtual mappings for the EFI runtime regions to
which these strict permissions apply, we currently perform a sanity check
on the EFI memory descriptor, and ensure that the EFI_MEMORY_RUNTIME bit
is set, and that the virtual address has been assigned.

However, in cases where a runtime region exists at physical address 0x0,
and the virtual mapping equals the physical mapping, e.g., when running
in mixed mode on x86, we encounter a memory descriptor with the runtime
attribute and virtual address 0x0, and incorrectly draw the conclusion
that a runtime region exists for which no virtual mapping was installed,
and give up altogether. The consequence of this is that firmware mappings
retain their read-write-execute permissions, making the system more
vulnerable to attacks.

So let's only bail if the virtual address of 0x0 has been assigned to a
physical region that does not reside at address 0x0.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Alexander Graf <agraf@suse.de>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
Cc: Jeffrey Hugo <jhugo@codeaurora.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Jones <pjones@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Fixes: 10f0d2f577 ("efi: Implement generic support for the Memory ...")
Link: http://lkml.kernel.org/r/20190202094119.13230-4-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-02-04 08:26:34 +01:00
Qian Cai 74c953ca5f efi/arm64: Fix debugfs crash by adding a terminator for ptdump marker
When reading 'efi_page_tables' debugfs triggers an out-of-bounds access here:

  arch/arm64/mm/dump.c: 282
  if (addr >= st->marker[1].start_address) {

called from:

  arch/arm64/mm/dump.c: 331
  note_page(st, addr, 2, pud_val(pud));

because st->marker++ is is called after "UEFI runtime end" which is the
last element in addr_marker[]. Therefore, add a terminator like the one
for kernel_page_tables, so it can be skipped to print out non-existent
markers.

Here's the KASAN bug report:

  # cat /sys/kernel/debug/efi_page_tables
  ---[ UEFI runtime start ]---
  0x0000000020000000-0x0000000020010000          64K PTE       RW NX SHD AF ...
  0x0000000020200000-0x0000000021340000       17664K PTE       RW NX SHD AF ...
  ...
  0x0000000021920000-0x0000000021950000         192K PTE       RW x  SHD AF ...
  0x0000000021950000-0x00000000219a0000         320K PTE       RW NX SHD AF ...
  ---[ UEFI runtime end ]---
  ---[ (null) ]---
  ---[ (null) ]---

   BUG: KASAN: global-out-of-bounds in note_page+0x1f0/0xac0
   Read of size 8 at addr ffff2000123f2ac0 by task read_all/42464
   Call trace:
    dump_backtrace+0x0/0x298
    show_stack+0x24/0x30
    dump_stack+0xb0/0xdc
    print_address_description+0x64/0x2b0
    kasan_report+0x150/0x1a4
    __asan_report_load8_noabort+0x30/0x3c
    note_page+0x1f0/0xac0
    walk_pgd+0xb4/0x244
    ptdump_walk_pgd+0xec/0x140
    ptdump_show+0x40/0x50
    seq_read+0x3f8/0xad0
    full_proxy_read+0x9c/0xc0
    __vfs_read+0xfc/0x4c8
    vfs_read+0xec/0x208
    ksys_read+0xd0/0x15c
    __arm64_sys_read+0x84/0x94
    el0_svc_handler+0x258/0x304
    el0_svc+0x8/0xc

  The buggy address belongs to the variable:
   __compound_literal.0+0x20/0x800

  Memory state around the buggy address:
   ffff2000123f2980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   ffff2000123f2a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fa
  >ffff2000123f2a80: fa fa fa fa 00 00 00 00 fa fa fa fa 00 00 00 00
                                            ^
   ffff2000123f2b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   ffff2000123f2b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0

[ ardb: fix up whitespace ]
[ mingo: fix up some moar ]

Signed-off-by: Qian Cai <cai@lca.pw>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Fixes: 9d80448ac9 ("efi/arm64: Add debugfs node to dump UEFI runtime page tables")
Link: http://lkml.kernel.org/r/20190202095017.13799-2-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-02-02 11:27:29 +01:00
Stephen Rothwell 7cbc2b421e firmware: intel_stratix10_service: remove COMPILE_TEST
This does not build yet ...

Cc: Richard Gong <richard.gong@intel.com>
Fixes: 095ff29d2b ("firmware: intel_stratix10_service: add hardware dependency")
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-01 15:17:51 +01:00
Richard Gong 095ff29d2b firmware: intel_stratix10_service: add hardware dependency
Add a Kconfig dependency to ensure Intel Stratix10 service layer driver
can be built only on the platform that supports it.

Signed-off-by: Richard Gong <richard.gong@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-01-31 19:25:24 +01:00
Yangtao Li 5953c887fb firmware: ti_sci: Change to use DEFINE_SHOW_ATTRIBUTE macro
Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.

Reviewed-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
2019-01-30 10:22:16 -08:00
Sudeep Holla 46edb8d132 firmware: arm_scmi: provide the mandatory device release callback
The device/driver model clearly mandates that bus driver that discover
and allocate the device must set the release callback. This callback
will be used to free the device after all references have gone away.

scmi bus driver is missing the obvious callback which will result in
the following warning if the device is unregistered:

Device 'scmi_dev.1' does not have a release() function, it is broken and
must be fixed. See Documentation/kobject.txt.
WARNING at drivers/base/core.c:922 device_release+0x8c/0xa0
Hardware name: ARM LTD Juno Development Platform BIOS EDK II Jan 21 2019
Workqueue: events deferred_probe_work_func
pstate: 60000005 (nZCv daif -PAN -UAO)
pc : device_release+0x8c/0xa0
lr : device_release+0x8c/0xa0
Call trace:
 device_release+0x8c/0xa0
 kobject_put+0x8c/0x208
 device_unregister+0x30/0x78
 scmi_device_destroy+0x28/0x50
 scmi_probe+0x354/0x5b0
 platform_drv_probe+0x58/0xa8
 really_probe+0x2c4/0x3e8
 driver_probe_device+0x12c/0x148
 __device_attach_driver+0xac/0x150
 bus_for_each_drv+0x78/0xd8
 __device_attach+0xe0/0x168
 device_initial_probe+0x24/0x30
 bus_probe_device+0xa0/0xa8
 deferred_probe_work_func+0x8c/0xe0
 process_one_work+0x1f0/0x478
 worker_thread+0x22c/0x450
 kthread+0x134/0x138
 ret_from_fork+0x10/0x1c
---[ end trace 420bdb7f6af50937 ]---

Fix the issue by providing scmi_device_release callback. We have
everything required for device release already in scmi_device_destroy,
so we just need to move freeing of the device to scmi_device_release.

Fixes: 933c504424 ("firmware: arm_scmi: add scmi protocol bus to enumerate protocol devices")
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Cc: stable@vger.kernel.org # 4.17+
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-01-30 11:34:42 +01:00
Nava kishore Manne bc3843d4d3 firmware: xilinx: Add reset API's
This Patch Adds reset API's to support release, assert
and status functionalities by using firmware interface.

Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2019-01-29 14:06:58 +01:00
Thierry Reding e835d442cf firmware: tegra: bpmp-tegra186: Remove unused includes
Many of the include files are not needed, so drop them.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2019-01-25 15:58:47 +01:00
Timo Alho 139251fc22 firmware: tegra: add bpmp driver for Tegra210
This patch adds driver for Tegra210 BPMP firmware.

The BPMP is a specific processor in Tegra210 chip, which runs firmware
for assisting in entering deep low power states (suspend to ram), and
offloading DRAM memory clock scaling on some platforms.

Based on work by Sivaram Nair <sivaramn@nvidia.com>

Signed-off-by: Timo Alho <talho@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2019-01-25 15:58:47 +01:00
Timo Alho cdfa358b24 firmware: tegra: Refactor BPMP driver
Split BPMP driver into common and chip specific parts to facilitate
adding support for previous and future Tegra chips that are using BPMP
as co-processor.

Signed-off-by: Timo Alho <talho@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2019-01-25 15:58:47 +01:00
Timo Alho 165ce6e01d firmware: tegra: Reword messaging terminology
As a preparatory change to refactor BPMP driver to support other than
Tegra186 and Tegra194 chip generations, reword and slightly refactor
some of the functions to better match with what is actually happening
in the wire-level protocol.

The communication with BPMP is essentially a Remote Procedure Call
consisting of "request" and "response". Either side (BPMP or CPU) can
initiate the communication. The state machine for communication
consists of following steps (from Linux point of view):

Linux initiating the call:
 1) check that channel is free to transmit a request
    (is_request_channel_free)
 2) copy request message payload to shared location
 3) post the request in channel (post_request)
 4) notify BPMP that channel state has been updated (ring_doorbell)
 5) wait for response (is_response_ready)
 6) copy response message payload from shared location
 7) acknowledge the response in channel (ack_response)

BPMP initiating the call:
 1) wait for request (is_request_ready)
 2) copy request message payload from shared location
 3) acknowledge the request in channel (ack_request)
 4) check that channel is free to transmit response
    (is_response_channel_free)
 5) copy response message payload to shared location
 6) post the response message to channel (post_response)
 7) notify BPMP that channel state has been updated (ring_doorbell)

Signed-off-by: Timo Alho <talho@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2019-01-25 15:57:52 +01:00
Aisheng Dong e59e59b80e firmware: imx: scu-pd: add fallback compatible string support
SCU power domain can be used in the same way by IMX8QXP and IMX8QM SoCs.
Make the driver support the fallback compatible string "fsl,scu-pd" to
allow other SoCs to reuse the common part.

Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Kevin Hilman <khilman@kernel.org>
Cc: linux-pm@vger.kernel.org
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-01-12 09:36:45 +08:00
Stefan Wahren b80ec7c0ef firmware: raspberrypi: notify VC4 firmware of a reboot
The firmware-owned GPIO expander on RPi 3 B+ must be in same state
after a reboot as initial power on. Otherwise this would cause a
network boot failure of the BOOTROM. So inform the VC4 firmware to restore
the expander before doing a reboot.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Phil Elwell <phil@raspberrypi.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
2019-01-09 16:38:34 +01:00
Linus Torvalds 078a5a4faf arm64 fixes for -rc1
- Prevent KASLR from mapping the top page of the virtual address space
 
 - Fix device-tree probing of SDEI driver
 
 - Fix incorrect register offset definition in Hisilicon DDRC PMU driver
 
 - Fix compilation issue with older binutils not liking unsigned immediates
 
 - Fix uapi headers so that libc can provide its own sigcontext definition
 
 - Fix handling of private compat syscalls
 
 - Hook up compat io_pgetevents() syscall for 32-bit tasks
 
 - Cleanup to arm64 Makefile (including now to avoid silly conflicts)
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "I'm safely chained back up to my desk, so please pull these arm64
  fixes for -rc1 that address some issues that cropped up during the
  merge window:

   - Prevent KASLR from mapping the top page of the virtual address
     space

   - Fix device-tree probing of SDEI driver

   - Fix incorrect register offset definition in Hisilicon DDRC PMU
     driver

   - Fix compilation issue with older binutils not liking unsigned
     immediates

   - Fix uapi headers so that libc can provide its own sigcontext
     definition

   - Fix handling of private compat syscalls

   - Hook up compat io_pgetevents() syscall for 32-bit tasks

   - Cleanup to arm64 Makefile (including now to avoid silly conflicts)"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: compat: Hook up io_pgetevents() for 32-bit tasks
  arm64: compat: Don't pull syscall number from regs in arm_compat_syscall
  arm64: compat: Avoid sending SIGILL for unallocated syscall numbers
  arm64/sve: Disentangle <uapi/asm/ptrace.h> from <uapi/asm/sigcontext.h>
  arm64/sve: ptrace: Fix SVE_PT_REGS_OFFSET definition
  drivers/perf: hisi: Fixup one DDRC PMU register offset
  arm64: replace arm64-obj-* in Makefile with obj-*
  arm64: kaslr: Reserve size of ARM64_MEMSTART_ALIGN in linear region
  firmware: arm_sdei: Fix DT platform device creation
  firmware: arm_sdei: fix wrong of_node_put() in init function
  arm64: entry: remove unused register aliases
  arm64: smp: Fix compilation error
2019-01-05 11:28:39 -08:00