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9fd379e929
android_kernel_xiaomi_sm8450/drivers/misc
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Oliver Schinagl 9fd379e929 ARM: sunxi: Initial support for Allwinner's Security ID fuses 
Allwinner has electric fuses (efuse) on their line of chips. This driver
reads those fuses, seeds the kernel entropy and exports them as a sysfs
node.

These fuses are most likely to be programmed at the factory, encoding
things like Chip ID, some sort of serial number, etc. and appear to be
reasonably unique.
While in theory, these should be writeable by the user, it will probably
be inconvenient to do so. Allwinner recommends that a certain input pin,
labeled 'efuse_vddq', be connected to GND. To write these fuses however,
a 2.5 V programming voltage needs to be applied to this pin.

Even so, they can still be used to generate a board-unique mac from,
board unique RSA key and seed the kernel RNG.

On sun7i additional storage is available, this is initially used for an
UEFI BOOT key, Secure JTAG key, HDMI-HDCP key and vendor specific keys.

Currently supported are the following known chips:
Allwinner sun4i (A10)
Allwinner sun5i (A10s, A13)
Allwinner sun7i (A20)

Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 13:47:36 -07:00
..
altera-stapl Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2011-10-31 15:42:54 -07:00
c2port c2port: convert class code to use bin_attrs in groups 2013-07-24 15:39:05 -07:00
carma misc: replace strict_strtoul() with kstrtoul() 2013-06-06 12:54:08 -07:00
cb710 Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
eeprom ARM: sunxi: Initial support for Allwinner's Security ID fuses 2013-09-26 13:47:36 -07:00
ibmasm misc: ibmasm: remove unnecessary pci_set_drvdata() 2013-09-26 09:13:54 -07:00
lis3lv02d misc: replace strict_strtoul() with kstrtoul() 2013-06-06 12:54:08 -07:00
mei misc: mei: remove unnecessary pci_set_drvdata() 2013-09-26 09:13:54 -07:00
sgi-gru drivers/misc/sgi-gru/grufault.c: fix a sanity test in gru_set_context_option() 2013-07-03 16:07:42 -07:00
sgi-xp sgi: xpc: Convert use of typedef ctl_table to struct ctl_table 2013-06-14 10:19:25 +02:00
ti-st drivers: misc: ti-st: fix potential race if st_kim_start fails 2013-08-30 12:08:04 -07:00
vmw_vmci VMCI: Add support for virtual IOMMU 2013-08-27 21:42:12 -07:00
ad525x_dpot-i2c.c misc: remove use of __devexit 2012-11-21 12:53:32 -08:00
ad525x_dpot-spi.c misc: remove use of __devexit 2012-11-21 12:53:32 -08:00
ad525x_dpot.c misc: replace strict_strtoul() with kstrtoul() 2013-06-06 12:54:08 -07:00
ad525x_dpot.h Merge branch 'char-misc-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc 2012-01-09 12:08:59 -08:00
apds990x.c misc: replace strict_strtoul() with kstrtoul() 2013-06-06 12:54:08 -07:00
apds9802als.c misc: replace strict_strtoul() with kstrtoul() 2013-06-06 12:54:08 -07:00
arm-charlcd.c misc: arm-charlcd: remove unnecessary platform_set_drvdata() 2013-05-16 18:11:13 -07:00
atmel_pwm.c misc: atmel_pwm: use module_platform_driver_probe() 2013-03-15 11:10:49 -07:00
atmel_tclib.c ARM: at91/tc/clocksource: Add 32 bit variant to Timer Counter 2012-03-01 13:38:49 +01:00
atmel-ssc.c Merge 3.11-rc3 into char-misc-next. 2013-07-29 11:50:17 -07:00
bh1770glc.c misc: replace strict_strtoul() with kstrtoul() 2013-06-06 12:54:08 -07:00
bh1780gli.c misc: replace strict_strtoul() with kstrtoul() 2013-06-06 12:54:08 -07:00
bmp085-i2c.c misc: remove use of __devinit 2012-11-21 12:51:53 -08:00
bmp085-spi.c misc: remove use of __devinit 2012-11-21 12:51:53 -08:00
bmp085.c drivers: misc: bmp085: remove '__init' from mp085_get_of_properties() 2013-09-26 08:44:40 -07:00
bmp085.h misc: add support for bmp18x chips to the bmp085 driver 2012-04-18 14:57:14 -07:00
cs5535-mfgpt.c cs5535-mfgpt: Fix quotation marks 2013-04-03 11:23:13 -07:00
ds1682.c MISC: convert drivers/misc/* to use module_i2c_driver() 2012-01-24 16:31:49 -08:00
dummy-irq.c treewide: Fix typo in printk 2013-05-28 12:02:13 +02:00
enclosure.c enclosure: convert class code to use dev_groups 2013-07-24 15:39:04 -07:00
ep93xx_pwm.c misc/ep93xx_pwm: use kstrtol instead of strict_strtol 2013-05-30 21:54:07 +09:00
fsa9480.c misc: fsa8480: Use dev_pm_ops 2013-04-11 12:39:02 -07:00
hmc6352.c misc: replace strict_strtoul() with kstrtoul() 2013-06-06 12:54:08 -07:00
hpilo.c drivers/misc/hpilo: Correct panic when an AUX iLO is detected 2013-08-14 14:46:22 -07:00
hpilo.h misc: hpilo: increase number of max supported channels 2012-06-14 17:22:12 -07:00
ics932s401.c hwmon: Change my email address. 2013-08-27 08:28:01 -07:00
ioc4.c misc: remove use of __devexit 2012-11-21 12:53:32 -08:00
isl29003.c misc: replace strict_strtoul() with kstrtoul() 2013-06-06 12:54:08 -07:00
isl29020.c misc: replace strict_strtoul() with kstrtoul() 2013-06-06 12:54:08 -07:00
Kconfig Driver core patches for 3.11-rc1 2013-07-02 11:44:19 -07:00
kgdbts.c kgdb/kgdbts: support ppc64 2013-03-02 08:52:17 -06:00
lattice-ecp3-config.c treewide: Fix typo in printk 2013-05-28 12:02:13 +02:00
lkdtm.c lkdtm: add "EXEC_*" triggers 2013-07-24 22:47:20 -07:00
Makefile misc: generic on-chip SRAM allocation driver 2013-04-29 18:28:13 -07:00
pch_phub.c pch_phub: fix error return code in pch_phub_probe() 2013-06-06 12:54:08 -07:00
phantom.c misc: remove use of __devexit 2012-11-21 12:53:32 -08:00
pti.c misc: pti: remove unnecessary pci_set_drvdata() 2013-09-26 09:13:54 -07:00
spear13xx_pcie_gadget.c misc: replace strict_strtoul() with kstrtoul() 2013-06-06 12:54:08 -07:00
sram.c misc: sram: fix error path in sram_probe 2013-07-24 22:54:50 -07:00
ti_dac7512.c drivers: misc: ti_dac7512: add support for DT matching 2013-09-26 09:04:06 -07:00
tifm_7xx1.c misc: tifm: remove unnecessary pci_set_drvdata() 2013-09-26 09:13:53 -07:00
tifm_core.c misc/tifm_core: convert to idr_alloc() 2013-02-27 19:10:17 -08:00
tsl2550.c Drivers: Misc: tsl2250: fix warnings, unsigned long will never < 0 2013-05-16 18:11:12 -07:00
vmw_balloon.c misc: vmw_balloon: Remove braces to fix build for clang. 2013-08-27 21:51:21 -07:00