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Aleksey Makarov ad1696f6f0 ACPI: parse SPCR and enable matching console 
'ARM Server Base Boot Requiremets' [1] mentions SPCR (Serial Port
Console Redirection Table) [2] as a mandatory ACPI table that
specifies the configuration of serial console.

Defer initialization of DT earlycon until ACPI/DT decision is made.

Parse the ACPI SPCR table, setup earlycon if required,
enable specified console.

Thanks to Peter Hurley for explaining how this should work.

[1] http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.den0044a/index.html
[2] https://msdn.microsoft.com/en-us/library/windows/hardware/dn639132(v=vs.85).aspx

Signed-off-by: Aleksey Makarov <aleksey.makarov@linaro.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Tested-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Tested-by: Christopher Covington <cov@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-09-28 17:46:46 +02:00
..
accessibility
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acpi
ACPI: parse SPCR and enable matching console
2016-09-28 17:46:46 +02:00
amba
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android
Revert "android: binder: fix dangling pointer comparison"
2016-08-18 17:21:37 +02:00
ata
pata_ninja32: Avoid corrupting status flags
2016-08-30 11:59:47 -04:00
atm
drivers: atm: nicstar: Use the correct function to free some resources
2016-07-19 11:30:26 -07:00
auxdisplay
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base
PM / runtime: Add _rcuidle suffix to allow rpm_idle() use from idle
2016-08-31 03:00:59 +02:00
bcma
wireless-drivers-next patches for 4.8
2016-07-25 11:09:19 -07:00
block
Revert "floppy: refactor open() flags handling"
2016-08-25 08:56:51 -06:00
bluetooth
Bluetooth: btmrvl: reset is_suspending flag in failure path
2016-07-18 10:13:02 +02:00
bus
ARM: SoC driver updates for v4.8
2016-08-01 18:36:01 -04:00
cdrom
cdrom: support read sub-channel command in LBA format
2016-07-12 08:24:50 -07:00
char
tpm: invalid self test error message
2016-09-03 08:27:37 +10:00
clk
Some fixes for rk3399 register errors that revealed themself
2016-08-29 17:08:35 -07:00
clocksource
clocksource/drivers/atmel-pit: Fix compilation error
2016-08-29 09:51:39 +02:00
connector
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cpufreq
cpufreq: dt: Add terminate entry for of_device_id tables
2016-08-31 02:49:05 +02:00
cpuidle
powerpc updates for 4.8 # 1
2016-07-30 21:01:36 -07:00
crypto
crypto: vmx - fix null dereference in p8_aes_xts_crypt
2016-08-24 20:51:20 +08:00
dax
dax: fix device-dax region base
2016-08-26 17:39:35 -07:00
dca
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devfreq
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dio
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dma
Merge 4.8-rc5 into tty-next
2016-09-05 08:11:21 +02:00
dma-buf
dma-buf: Release module reference on creation failure
2016-07-18 14:10:49 +02:00
edac
EDAC, skx_edac: Add EDAC driver for Skylake
2016-08-21 10:58:34 -07:00
eisa
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extcon
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firewire
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firmware
efi/capsule: Allocate whole capsule into virtual memory
2016-08-11 13:55:36 +02:00
fmc
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fpga
drivers/fpga/Kconfig: fix build failure
2016-08-04 08:50:07 -04:00
gpio
gpio: make any OF dependent driver depend on OF_GPIO
2016-08-19 15:01:29 +02:00
gpu
This pull request brings in fixes for VC4 3D in 4.8, most of which are
2016-09-02 15:55:15 +10:00
hid
Merge branch 'for-4.8/hid-led' into for-linus
2016-07-28 10:49:23 +02:00
hsi
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hv
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hwmon
hwmon: (it87) Add missing sysfs attribute group terminator
2016-08-29 05:31:31 -07:00
hwspinlock
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hwtracing
Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-07-29 13:55:30 -07:00
i2c
i2c: meson: Use complete() instead of complete_all()
2016-08-15 00:55:34 +02:00
ide
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide
2016-07-29 13:29:06 -07:00
idle
Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-07-30 12:56:26 -07:00
iio
Char/Misc driver fixes for 4.8-rc5
2016-09-03 11:38:43 -07:00
infiniband
Merge branch 'misc-fixes' into k.o/for-4.8-rc
2016-08-25 11:17:10 -04:00
input
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2016-08-26 18:36:23 -07:00
iommu
Merge branch 'for-joerg/arm-smmu/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into iommu/fixes
2016-08-22 12:33:56 +02:00
ipack
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irqchip
irqchip/mips-gic: Implement activate op for device domain
2016-08-22 18:37:51 +02:00
isdn
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leds
powerpc updates for 4.8 # 1
2016-07-30 21:01:36 -07:00
lguest
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lightnvm
block: get rid of bio_rw and READA
2016-07-20 17:37:01 -06:00
macintosh
drivers/macintosh: Delete owner assignment
2016-08-22 11:09:33 +10:00
mailbox
mailbox: Fix format and type mismatches in Broadcom PDC driver
2016-07-28 21:27:31 +05:30
mcb
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md
- a stable fix in both DM crypt and DM log-writes for too large bios (as
2016-09-03 17:29:58 -07:00
media
media updates for v4.8-rc1
2016-08-04 09:59:37 -04:00
memory
MTD updates for v4.8:
2016-08-02 17:05:11 -04:00
memstick
memstick: don't allocate unused major for ms_block
2016-08-02 17:31:41 -04:00
message
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mfd
ARM: SoC driver updates for v4.8
2016-08-01 18:36:01 -04:00
misc
Char/Misc driver fixes for 4.8-rc5
2016-09-03 11:38:43 -07:00
mmc
mmc: fix use-after-free of struct request
2016-08-25 14:11:43 -06:00
mtd
This pull request contains mostly cleanups and minor
2016-08-04 19:51:49 -04:00
net
Add Killer E2500 device ID in alx driver.
2016-08-29 00:23:50 -04:00
nfc
NFC 4.8 pull request
2016-07-20 23:39:36 -07:00
ntb
NTB: ntb_hw_intel: use local variable pdev
2016-08-05 10:34:13 -04:00
nubus
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nvdimm
nvdimm, btt: add a size attribute for BTTs
2016-08-08 09:26:14 -07:00
nvme
Merge branch 'nvmf-4.8-rc' of git://git.infradead.org/nvme-fabrics into for-linus
2016-08-29 08:39:22 -06:00
nvmem
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of
of/serial: move earlycon early_param handling to serial
2016-09-28 17:43:15 +02:00
oprofile
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parisc
dma-mapping: use unsigned long for dma_attrs
2016-08-04 08:50:07 -04:00
parport
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pci
Char/Misc driver fixes for 4.8-rc5
2016-09-03 11:38:43 -07:00
pcmcia
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perf
drivers/perf: arm_pmu: Fix NULL pointer dereference during probe
2016-09-02 17:17:52 +01:00
phy
phy: sun9i-usb: fix error handling
2016-08-12 14:59:10 +05:30
pinctrl
pinctrl: intel: merrifield: Add missed header
2016-08-10 15:46:28 +02:00
platform
intel_pmic_gpio: Make explicitly non-modular
2016-08-28 22:31:52 -07:00
pnp
PNP: pnpbios: add header file to fix build errors
2016-07-27 18:52:54 +02:00
power
power_supply: tps65217-charger: fix missing platform_set_drvdata()
2016-08-15 23:10:44 +02:00
powercap
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pps
pps: do not crash when failed to register
2016-07-23 10:25:54 +09:00
ps3
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ptp
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pwm
pwm: Changes for v4.8-rc1
2016-08-06 00:01:33 -04:00
rapidio
rapidio/tsi721: fix incorrect detection of address translation condition
2016-09-01 17:52:02 -07:00
ras
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regulator
pwm: Changes for v4.8-rc1
2016-08-06 00:01:33 -04:00
remoteproc
dma-mapping: use unsigned long for dma_attrs
2016-08-04 08:50:07 -04:00
reset
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rpmsg
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rtc
RTC for 4.8
2016-08-05 09:48:22 -04:00
s390
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2016-08-16 15:50:22 -07:00
sbus
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scsi
drivers/scsi/wd719x.c: remove last declaration using DEFINE_PCI_DEVICE_TABLE
2016-09-01 17:52:01 -07:00
sfi
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sh
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sn
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soc
ARM: SoC driver updates for v4.8
2016-08-01 18:36:01 -04:00
spi
ARM: DT updates for v4.8
2016-08-01 18:37:45 -04:00
spmi
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ssb
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staging
First round of IIO fixes for the 4.8 cycle.
2016-08-23 17:39:31 -04:00
target
target: iblock_execute_sync_cache() should use bio_set_op_attrs()
2016-08-07 14:41:02 -06:00
tc
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thermal
thermal: imx: fix a possible NULL dereference
2016-08-19 21:34:08 +08:00
thunderbolt
thunderbolt: Don't declare Falcon Ridge unsupported
2016-08-31 13:25:02 +02:00
tty
ACPI: parse SPCR and enable matching console
2016-09-28 17:46:46 +02:00
uio
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usb
usb: musb: Fix locking errors for host only mode
2016-08-30 14:11:38 +02:00
uwb
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vfio
vfio/pci: Fix NULL pointer oops in error interrupt setup handling
2016-08-08 16:16:23 -06:00
vhost
vhost/scsi: fix reuse of &vq->iov[out] in response
2016-08-23 17:16:57 +03:00
video
dma-mapping: use unsigned long for dma_attrs
2016-08-04 08:50:07 -04:00
virt
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virtio
virtio: fix error handling for debug builds
2016-08-09 13:42:35 +03:00
vlynq
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vme
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w1
w1:omap_hdq: fix regression
2016-08-02 19:35:40 -04:00
watchdog
watchdog: gpio_wdt: Fix missing platform_set_drvdata() in gpio_wdt_probe()
2016-07-27 10:47:43 +02:00
xen
xenbus: don't look up transaction IDs for ordinary writes
2016-08-24 18:16:18 +01:00
zorro
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Kconfig
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Makefile
virtio/vhost: new features for 4.8
2016-08-06 09:20:13 -04:00