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  1. 23 2月, 2015 1 次提交
  3. 12 2月, 2015 1 次提交
  5. 10 2月, 2015 1 次提交
  7. 05 2月, 2015 2 次提交
  9. 04 2月, 2015 1 次提交
  11. 29 1月, 2015 1 次提交
  13. 23 1月, 2015 2 次提交
  15. 22 1月, 2015 3 次提交
  17. 14 1月, 2015 3 次提交
  19. 04 12月, 2014 4 次提交
  21. 02 12月, 2014 2 次提交
  23. 28 11月, 2014 2 次提交
  25. 26 11月, 2014 2 次提交
    • G
      of: remove select of non-existant OF_DEVICE config symbol · 65d473b8
      由 Grant Likely 提交于 
      The OF_OVERLAY option selects OF_DEVICE, but OF_DEVICE was removed in
commit ba166e90, "of: remove CONFIG_OF_DEVICE". Remove the unnecessary
select.
Signed-off-by: NGrant Likely <grant.likely@linaro.org>
Reported-by: NPaul Bolle <pebolle@tiscali.nl>
Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
      65d473b8
    • I
      of/fdt: memblock_reserve /memreserve/ regions in the case of partial overlap · 094cb981
      由 Ian Campbell 提交于 
      memblock_is_region_reserved() returns true in the case of a partial
overlap, meaning that the current code fails to reserve the
non-overlapping portion.

This call was introduced as part of d1552ce4 "of/fdt: move
memreserve and dtb memory reservations into core" which went into
v3.16.

I observed this causing a Midway system with a buggy fdt (the header
declares itself to be larger than it really is) failing to boot
because the over-inflated size of the fdt was causing it to seem to
run into the swapper_pg_dir region, meaning the DT wasn't reserved.
The symptoms were failing to find an disks or network and failing to
boot.

However given the ambiguity of whether things like the initrd are
covered by /memreserve/ and similar I think it is best to also
register the region rather than just ignoring it.

Since memblock_reserve() handles overlaps just fine lets just warn and
carry on.
Signed-off-by: NIan Campbell <ian.campbell@citrix.com>
Signed-off-by: NGrant Likely <grant.likely@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: stable@vger.kernel.org # v3.16+
      094cb981
  27. 25 11月, 2014 9 次提交
  29. 20 11月, 2014 3 次提交
    • G
      of/selftest: Fix testing when /aliases is missing · 788ec2fc
      由 Grant Likely 提交于 
      The /aliases node isn't always present in the device tree, but the
unittest code assumes that /aliases is there. Add a check when inserting
the testcase data to see if of_aliases needs to be updated, and undo the
settings when the nodes are removed.
Signed-off-by: NGrant Likely <grant.likely@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Gaurav Minocha <gaurav.minocha.os@gmail.com>
Cc: <stable@vger.kernel.org>
      788ec2fc
    • G
      of: Properly set the OF_POPULATED_BUS flag on root node · 2d0747c4
      由 Grant Likely 提交于 
      of_platform_populate() takes a subset of the device tree and turns it
into a set of platform_devices. At the same time it sets the
OF_POPULATED_BUS flag in each bus nodes so that of_platform_depopulate()
can undo the operation at a later time. However, it doesn't set the flag
on the root of the population tree which means that dynamic modifications
of the device tree at runtime will not create/destroy devices correctly.

Fix of_platform_populate() to set the OF_POPULATED_BUS flag on the node
it is called with.
Signed-off-by: NGrant Likely <grant.likely@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Cc: Pawel Moll <pawel.moll@arm.com>
      2d0747c4
    • G
      of/selftest: Fix off-by-one error in removal path · c1a2086e
      由 Grant Likely 提交于 
      The removal path for selftest data has an off by one error that causes
the code to dereference beyond the end of the nodes[] array on the first
pass through. The old code only worked by chance on a lot of platforms,
but the bug was recently exposed on aarch64.

The fix is simple. Decrement the node count before dereferencing, not
after.
Reported-by: NKevin Hilman <khilman@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Gaurav Minocha <gaurav.minocha.os@gmail.com>
Cc: <stable@vger.kernel.org> # v3.17+
      c1a2086e
  31. 19 11月, 2014 3 次提交
    • A
      of/fdt: export fdt blob as /sys/firmware/fdt · 08d53aa5
      由 Ard Biesheuvel 提交于 
      Create a new /sys entry '/sys/firmware/fdt' to export the FDT blob
that was passed to the kernel by the bootloader. This allows userland
applications such as kexec to access the raw binary.

The fact that this node does not reside under /sys/firmware/device-tree
is deliberate: FDT is also used on arm64 UEFI/ACPI systems to
communicate just the UEFI and ACPI entry points, but the FDT is never
unflattened and used to configure the system.

A CRC32 checksum is calculated over the entire FDT blob, and verified
at late_initcall time. The sysfs entry is instantiated only if the
checksum is valid, i.e., if the FDT blob has not been modified in the
mean time. Otherwise, a warning is printed.
Signed-off-by: NArd Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: NGrant Likely <grant.likely@linaro.org>
      08d53aa5
    • B
      of/base: Fix PowerPC address parsing hack · 746c9e9f
      由 Benjamin Herrenschmidt 提交于 
      We have a historical hack that treats missing ranges properties as the
equivalent of an empty one. This is needed for ancient PowerMac "bad"
device-trees, and shouldn't be enabled for any other PowerPC platform,
otherwise we get some nasty layout of devices in sysfs or even
duplication when a set of otherwise identically named devices is
created multiple times under a different parent node with no ranges
property.

This fix is needed for the PowerNV i2c busses to be exposed properly
and will fix a number of other embedded cases.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
CC: <stable@vger.kernel.org>
Acked-by: NGrant Likely <grant.likely@linaro.org>
Signed-off-by: NRob Herring <robh@kernel.org>
      746c9e9f
    • K
      of: Fix crash if an earlycon driver is not found · ab74d00a
      由 Kevin Cernekee 提交于 
      __earlycon_of_table_sentinel.compatible is a char[128], not a pointer, so
it will never be NULL.  Checking it against NULL causes the match loop to
run past the end of the array, and eventually match a bogus entry, under
the following conditions:

 - Kernel command line specifies "earlycon" with no parameters
 - DT has a stdout-path pointing to a UART node
 - The UART driver doesn't use OF_EARLYCON_DECLARE (or maybe the console
   driver is compiled out)

Fix this by checking to see if match->compatible is a non-empty string.
Signed-off-by: NKevin Cernekee <cernekee@gmail.com>
Cc: <stable@vger.kernel.org> # 3.16+
Signed-off-by: NRob Herring <robh@kernel.org>
      ab74d00a