Commit graph

19 commits

Author SHA1 Message Date
Jacob Garber
698d83a7c8 lib: Prevent memory leak on error path
Free the tree before returning to prevent a leak.

Change-Id: I1132c0e7404eec1af3adc19a83257f28563f8a58
Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Found-by: Coverity CID 1401799
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33298
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
2019-06-21 08:31:02 +00:00
Julius Werner
0e9116f0a1 device_tree: Make FDT property data non-const
FDT property data should not be const -- sometimes we need to update it,
for example when fixing up phandles in an overlay. On the other hand
it's occasionally desirable to put a string constant in there without
having to strdup() it all the time... let's just live with the tiny
implicit assumption that the data we'd want to modify (phandle
references, mostly) will never be added from string constants, and put a
cast in dt_add_string_prop().

Change-Id: Ifac103fcff0520cc427ab9a2aa141c65e12507ac
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32868
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-06-04 11:24:46 +00:00
Julius Werner
0d74653bd4 device_tree: Match debug output format to dtc -O dts output
This patch updates the device tree dumping functions (not compiled by
default but available for debugging) to output properties and nodes in a
format similar to .dts files that is very close to what dtc outputs when
you decompile a .dtb with it. This makes it easier to match device tree
dumps from coreboot with device tree dumps generated by other device
tree tooling.

This patch was adapted from depthcharge's http://crosreview.com/1536386

Change-Id: Ib40e50d906aff05473a70c4fc9b124d63232558c
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32867
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-06-04 11:24:34 +00:00
Julius Werner
6d5695fac5 device_tree: Add support for aliases
This patch adds support to lookup nodes via the "/aliases" mechanism in
device trees. This may be required for overlay support (don't quite
remember tbh) and is also just a generally useful feature. It was
adapted from depthcharge's http://crosreview.com/1249703 and
http://crosreview.com/1542702.

Change-Id: I1289ab2f02c4877a2d0111040384827e2b48a34a
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32866
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-06-04 11:24:01 +00:00
Julius Werner
fbec63d15f device_tree: Have absolute paths start with '/'
Currently DT paths are *not* expected to start with '/'. This is not
what the spec says (see Devicetree Specification v0.2, 2.2.3 Path Names)
and also not what is done by Linux.

Change dt_find_node_by_path() to expect paths to start with '/' and add
a leading '/' to all DT path strings. Besides the compatibility with the
spec this change is also needed to support aliases in the future.

This patch was adapted from depthcharge's http://crosreview.com/1252770

Change-Id: Ibdf59ccbb4ead38c6193b630642fd1f1e847dd89
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32865
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-06-04 11:23:48 +00:00
Julius Werner
f36d53c653 device_tree: Drop sub-node path lookup from dt_find_node_by_path()
Besides looking up a node with an absolute path dt_find_node_by_path()
currently also supports finding a sub-node of a non-root node. All
callers of the function pass the root node though, so it seems there
is no real need for this functionality. Also it is planned to support
DT path names with aliases, which would become messy in combination with
the lookup from a sub-node.

Change the interface of dt_find_node_by_path() to receive the DT tree
object instead of a parent node and adapt all callers accordingly.

This patch was adapted from depthcharge's http://crosreview.com/1252769

Change-Id: Iff56be4da2461ae73a7301dcaa315758d2a8c999
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32864
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-06-04 11:23:12 +00:00
Julius Werner
6702b68a79 device_tree: Add phandle caching and lookups
This patch caches phandles when unflattening the device tree, so we
don't have to look up the phandle property again every time we're trying
to find the phandle of a node. This is especially important when
supporting phandle lookups, which are also added. In addition we keep
track of the highest phandle in the whole tree, which will be important
for applying overlays later.

With this, dt_get_phandle(node) becomes obsolete because the phandle is
already available as a member variable in the node.

This patch was adapted from depthcharge's http://crosreview.com/1536385

Change-Id: I9cbd67d1d13e57c25d068b3db18bb75c709d7ebe
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32863
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-06-04 11:22:57 +00:00
Julius Werner
73eaec8168 device_tree: Add version checks
This patch adds a few more sanity checks to the FDT header parsing to
make sure that our code can support the version that is passed in.

This patch was adapted from depthcharge's http://crosreview.com/1536384

Change-Id: I06c112f540213c8db7c2455c2e8a4e8e4f337b78
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32862
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-06-04 11:22:47 +00:00
Julius Werner
9636a106d4 device_tree: Switch allocations to xzalloc()
The FIT code is already using xzalloc() everywhere, and that's the only
real consumer of device tree code right now. Chances are if you're
trying to unflatten an FDT and it doesn't fit into the heap you're
pretty much screwed anyway, so all the OOM handling feels a bit
unnecessary (and some functions will just silently fail because they
don't have a return value, which is bad). Let's just switch this all to
die on failed allocations.

Change-Id: I738f24d550a776653b2becd3d4f7d4d2cb3cc048
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32861
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-06-04 11:22:25 +00:00
Julius Werner
a5ea3a271b device_tree: Use be32dec/be32enc where appropriate
This patch rewrites some of the device tree code to use the new
be32dec/be32enc helpers where they can make the code cleaner.

Change-Id: I437bbd6645a556ae9a0cfe6ea14638098e4c3606
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32860
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-05-23 08:44:34 +00:00
Patrick Rudolph
0a7d6908bf device_tree/fit: Constify data structures
* Add const quailifier to arguments and elements.
* Add casts where necessary in cn81xx/soc.

Tested on Cavium CN81xx EVB SFF.

Change-Id: Id27966427fb97457fe883be32685d1397fb0781f
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/28267
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2018-08-24 11:38:28 +00:00
Patrick Rudolph
3fca4ed45e lib/fit: support booting initrd placed above 4GiB
Store initrd offset as 64bit integer.

Tested on Cavium CN81XX EVB: The initrd could be loaded when placed
above 4GiB. Previously it failed to find the initrd.

Change-Id: I5d1ae860ae4a4465546bc0ef89937d611d1e56ab
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/28002
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
2018-08-10 23:23:17 +00:00
Elyes HAOUAS
1ec76447c0 src/lib: Fix typo
Change-Id: Ie5bf036a63a254dd95b45a0823086c8079eeafe2
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/27913
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
2018-08-09 15:56:42 +00:00
Patrick Rudolph
679d624fae Coverity: Fix CID1393979
Fix resource leak in dt_set_bin_prop_by_path().

Change-Id: I1c4d7e01b25847a2091ad90d2d70711beae55905
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/27445
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
2018-07-12 15:21:10 +00:00
Elyes HAOUAS
e3e3f4f4ed src: Get rid of unneeded whitespace
Change-Id: I3873cc8ff82cb043e4867a6fe8c1f253ab18714a
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/27295
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2018-07-02 07:39:51 +00:00
Patrick Rudolph
5ccc73145f devicetree: Add method to delete property by name
Will be used on Cavium SoC to delete devicetree entries that aren't
available with the board/configuration.

Change-Id: I7c58a2411206bca62d0e96fa627530e937383ac9
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/26693
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
2018-06-28 09:01:26 +00:00
Patrick Rudolph
c38960d7f3 lib/device_tree: Add method to get phandle
Add a method to retrieve a node's phandle.
Useful for board specific devicetree manipulations.

Change-Id: I966151ad7e82fc678ab4f56cf9b5868ef39398e0
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/26191
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
2018-06-14 09:25:41 +00:00
Patrick Rudolph
666c172d38 lib/devicetree: Integrate flattened devicetree support
* Adapt to coreboot coding style.
* Use coreboot's endian conversion functions.
* Fix header and header guards.
* Get rid of unused functions.
* Add Kconfig to build it on ramstage.
* Replace size32 with ALIGN_UP and DIV_ROUND_UP.
* Add NULL pointer checks
* Convert constants to defines

Required for Cavium's BDK and uImage FIT support.

Change-Id: I6e6cd9f78fb402bd54d684097326d26eb78d552a
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/25523
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
2018-04-30 09:33:32 +00:00
Patrick Rudolph
67aca3e7dc lib: Raw import FDT devicetree from depthcharge
Import from https://chromium.googlesource.com/chromiumos/platform/depthcharge
Required for general devicetree patching and FIT support.

Coding style and coreboot integration will be done in a separate commit.

Change-Id: Ida75d4786eae38d84bfc71bf53573dafca8eda40
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/25632
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
2018-04-30 09:33:21 +00:00