Tony Luck 7dae6326ed ACPI / sysfs: Extend ACPI sysfs to provide access to boot error region ...

The ACPI sysfs interface provides a way to read each ACPI table from
userspace via entries in /sys/firmware/acpi/tables/

The BERT table simply provides the size and address of the error
record in BIOS reserved memory and users may want access to this
record.

In an earlier age we might have used /dev/mem to retrieve this error
record, but many systems disable /dev/mem for security reasons.

Extend this driver to provide read-only access to the data via a
file in a new directory /sys/firmware/acpi/tables/data/BERT

Acked-by: Punit Agrawal <punit.agrawal@arm.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

v4: fix typo reported by Punit
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

2017-08-24 03:35:37 +02:00

..

acpica

Merge branches 'acpi-pmic', 'acpi-misc' and 'acpi-tables'

2017-07-03 14:25:11 +02:00

apei

arm64 updates for 4.13:

2017-07-05 17:09:27 -07:00

arm64

IOMMU Updates for Linux v4.13

2017-07-12 10:00:04 -07:00

dptf

ACPI / DPTF: constify attribute_group structures

2017-07-04 22:15:28 +02:00

nfit

acpi/nfit: Fix memory corruption/Unregister mce decoder on failure

2017-07-17 11:43:58 -07:00

pmic

ACPI / PMIC: xpower: Add support for the GPI1 regulator to the OpRegion handler

2017-06-22 02:15:05 +02:00

x86

ACPI / x86: Add KIOX000A accelerometer on GPD win to always_present_ids array

2017-07-12 13:26:13 +02:00

ac.c

ACPI / AC: Add a blacklist with PMIC ACPI HIDs with a native charger driver

2017-04-19 22:53:35 +02:00

acpi_amba.c

ACPI / amba: Remove CLK_IS_ROOT

2016-04-27 23:42:57 +02:00

acpi_apd.c

ACPI: APD: Fix HID for Hisilicon Hip07/08

2017-07-30 14:33:48 +02:00

acpi_cmos_rtc.c

char/genrtc: x86: remove remnants of asm/rtc.h

2016-06-04 00:20:07 +02:00

acpi_configfs.c

ACPI: configfs: Unload SSDT on configfs entry removal

2017-06-22 02:43:12 +02:00

acpi_dbg.c

ACPI: fix whitespace in pr_fmt() to align log entries

2017-06-22 02:18:20 +02:00

acpi_extlog.c

ACPI: Switch to use generic guid_t in acpi_evaluate_dsm()

2017-06-07 12:20:49 +02:00

acpi_ipmi.c

ACPI / IPMI: change warning to debug on timeout

2017-04-07 12:25:37 -05:00

acpi_lpat.c

ACPI / lpat: make it explicitly non-modular

2016-07-16 03:08:10 +02:00

acpi_lpss.c

Merge branches 'acpi-soc', 'acpi-wdat' and 'acpi-cppc'

2017-08-03 20:30:18 +02:00

acpi_memhotplug.c

ACPI: Remove FSF mailing addresses

2015-07-08 02:27:32 +02:00

acpi_pad.c

sched/headers: Prepare for new header dependencies before moving code to <uapi/linux/sched/types.h>

2017-03-02 08:42:27 +01:00

acpi_platform.c

ACPI / platform: Update platform device NUMA node based on _PXM method

2017-04-18 16:56:39 +02:00

acpi_pnp.c

ACPI / PNP: constify device IDs

2016-01-04 22:10:30 +01:00

acpi_processor.c

ACPI / Processor: Drop setup_max_cpus check from acpi_processor_add()

2017-04-18 16:50:24 +02:00

acpi_video.c

ACPI / video: add comments about subtle cases

2017-04-19 22:50:11 +02:00

acpi_watchdog.c

ACPI / watchdog: Fix init failure with overlapping register regions

2017-07-26 02:09:41 +02:00

battery.c

ACPI / PM: Ignore spurious SCI wakeups from suspend-to-idle

2017-06-15 00:55:44 +02:00

battery.h

ACPI / battery: move some ACPI_BATTERY_* definitions to header

2014-03-19 01:57:46 +01:00

bgrt.c

ACPI: BGRT: constify attribute_group structures

2017-07-04 22:15:20 +02:00

blacklist.c

ACPI / blacklist: add _REV quirk for Dell Inspiron 7537

2017-04-19 02:35:54 +02:00

bus.c

Merge branches 'acpi-spcr', 'acpi-osi', 'acpi-bus', 'acpi-scan' and 'acpi-misc'

2017-07-10 22:46:21 +02:00

button.c

ACPI updates for v4.13-rc1

2017-07-04 14:16:49 -07:00

cm_sbs.c

ACPI: Remove FSF mailing addresses

2015-07-08 02:27:32 +02:00

container.c

ACPI: Remove FSF mailing addresses

2015-07-08 02:27:32 +02:00

cppc_acpi.c

scripts/spelling.txt: add regsiter -> register spelling mistake

2017-05-08 17:15:13 -07:00

custom_method.c

ACPI: Clean up inclusions of ACPI header files

2013-12-07 01:03:14 +01:00

debugfs.c

ACPI: fix acpi_debugfs_init prototype

2015-08-07 02:55:18 +02:00

device_pm.c

Device properties framework updates for v4.13-rc1

2017-07-10 15:23:45 -07:00

device_sysfs.c

ACPI / property: Hierarchical properties support update

2016-11-24 02:43:47 +01:00

dock.c

ACPI / dock: make dock explicitly non-modular

2016-07-16 03:08:08 +02:00

ec_sys.c

ACPI / EC: Deny write access unless requested by module param

2016-03-09 23:26:15 +01:00

ec.c

ACPI / PM / EC: Flush all EC work in acpi_freeze_sync()

2017-07-20 16:44:24 +02:00

event.c

genetlink: mark families as __ro_after_init

2016-10-27 16:16:09 -04:00

evged.c

ACPI / GED: make evged.c explicitly non-modular

2016-05-09 22:59:25 +02:00

fan.c

ACPI / fan: Fix error reading cur_state

2016-10-10 02:20:43 +02:00

glue.c

IOMMU Updates for Linux v4.12

2017-05-09 15:15:47 -07:00

hed.c

ACPI: Remove FSF mailing addresses

2015-07-08 02:27:32 +02:00

internal.h

ACPI / PM / EC: Flush all EC work in acpi_freeze_sync()

2017-07-20 16:44:24 +02:00

ioapic.c

ACPI: fix whitespace in pr_fmt() to align log entries

2017-06-22 02:18:20 +02:00

irq.c

ACPI / irq: Fix return code of acpi_gsi_to_irq()

2017-07-12 13:11:49 +02:00

Kconfig

- New Drivers

2017-05-03 12:16:25 -07:00

Makefile

Merge branches 'acpi-soc', 'acpi-bus', 'acpi-pmic' and 'acpi-power'

2017-05-09 23:23:02 +02:00

numa.c

ACPI: NUMA: Fix typo in the full name of SRAT

2017-07-24 22:27:44 +02:00

nvs.c

ACPI: Clean up acpi_os_map/unmap_memory() to eliminate __iomem.

2014-05-27 18:13:08 +02:00

osi.c

ACPI / osi: Make local function acpi_osi_dmi_linux() static

2017-07-04 21:35:19 +02:00

osl.c

ACPICA: Hardware: Add sleep register hooks

2017-01-02 23:18:41 +01:00

pci_irq.c

ACPI / PCI: fix GIC irq model default PCI IRQ polarity

2016-09-10 02:50:50 +02:00

pci_link.c

ACPI/PCI: pci_link: Include PIRQ_PENALTY_PCI_USING for ISA IRQs

2016-10-24 14:18:14 +02:00

pci_mcfg.c

PCI/ACPI: Add ThunderX pass2.x 2nd node MCFG quirk

2017-04-24 11:58:56 -05:00

pci_root.c

Power management updates for v4.13-rc1

2017-07-04 13:39:41 -07:00

pci_slot.c

ACPI / PCI: make pci_slot explicitly non-modular

2016-07-16 03:05:29 +02:00

power.c

ACPI / power: constify attribute_group structures

2017-07-04 22:15:14 +02:00

proc.c

ACPI / PM: Drop run_wake from struct acpi_device_wakeup_flags

2017-06-28 01:52:15 +02:00

processor_core.c

Revert"x86/acpi: Enable MADT APIs to return disabled apicids"

2017-03-11 14:41:18 +01:00

processor_driver.c

ACPI/processor: Use cpu_hotplug_disable() instead of get_online_cpus()

2017-05-26 10:10:44 +02:00

processor_idle.c

x86/amd: Simplify AMD E400 aware idle routine

2016-12-09 21:23:21 +01:00

processor_pdc.c

ACPI / processor: Introduce invalid_logical_cpuid()

2015-05-13 23:28:14 +02:00

processor_perflib.c

ACPI: processor_perflib: Simplify code and stop using CPUFREQ_START

2017-02-04 00:05:29 +01:00

processor_thermal.c

Replace <asm/uaccess.h> with <linux/uaccess.h> globally

2016-12-24 11:46:01 -08:00

processor_throttling.c

acpi/processor: Prevent cpu hotplug deadlock

2017-05-26 10:10:47 +02:00

property.c

device property: Introduce fwnode_device_is_available()

2017-06-22 02:55:34 +02:00

reboot.c

…

resource.c

scripts/spelling.txt: add "overrided" pattern and fix typo instances

2017-02-27 18:43:47 -08:00

sbs.c

ACPI / SBS: fix inconsistent indenting inside if statement

2016-01-04 22:14:27 +01:00

sbshc.c

Revert "ACPI / SBS: Add 5 us delay to fix SBS hangs on MacBook"

2015-11-16 23:26:45 +01:00

sbshc.h

…

scan.c

Device properties framework updates for v4.13-rc1

2017-07-10 15:23:45 -07:00

sleep.c

ACPI / PM / EC: Flush all EC work in acpi_freeze_sync()

2017-07-20 16:44:24 +02:00

sleep.h

ACPI / power: Delay turning off unused power resources after suspend

2017-05-01 23:11:21 +02:00

spcr.c

tty: pl011: fix initialization order of QDF2400 E44

2017-07-30 07:53:44 -07:00

sysfs.c

ACPI / sysfs: Extend ACPI sysfs to provide access to boot error region

2017-08-24 03:35:37 +02:00

tables.c

Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2017-05-01 20:51:12 -07:00

thermal.c

Replace <asm/uaccess.h> with <linux/uaccess.h> globally

2016-12-24 11:46:01 -08:00

utils.c

ACPI: Switch to use generic guid_t in acpi_evaluate_dsm()

2017-06-07 12:20:49 +02:00

video_detect.c

ACPI / video: Add quirks for the Dell Precision 7510

2017-06-28 23:41:03 +02:00

wakeup.c

ACPI: Clean up inclusions of ACPI header files

2013-12-07 01:03:14 +01:00