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  1. 24 Jul, 2019 4 commits
    • Julius Werner's avatar
      Add helper to parse BL31 parameters (both versions) · d9af1f7b
      Julius Werner authored 
      BL31 used to take a single bl31_params_t parameter structure with entry
point information in arg0. In commit 72600226

 (Add new version of image
loading.) this API was changed to a more flexible linked list approach,
and the old parameter structure was copied into all platforms that still
used the old format. This duplicated code unnecessarily among all these
platforms.

This patch adds a helper function that platforms can optionally link to
outsource the task of interpreting arg0. Many platforms are just
interested in the BL32 and BL33 entry point information anyway. Since
some platforms still need to support the old version 1 parameters, the
helper will support both formats when ERROR_DEPRECATED == 0. This allows
those platforms to drop a bunch of boilerplate code and asynchronously
update their BL2 implementation to the newer format.

Change-Id: I9e6475adb1a7d4bccea666118bd1c54962e9fc38
Signed-off-by: default avatarJulius Werner <jwerner@chromium.org>
      d9af1f7b
    • Julius Werner's avatar
      Factor out cross-BL API into export headers suitable for 3rd party code · 57bf6057
      Julius Werner authored 
      

This patch adds a new include/export/ directory meant for inclusion in
third-party code. This is useful for cases where third-party code needs
to interact with TF-A interfaces and data structures (such as a custom
BL2-implementation like coreboot handing off to BL31). Directly
including headers from the TF-A repository avoids having to duplicate
all these definitions (and risk them going stale), but with the current
header structure this is not possible because handoff API definitions
are too deeply intertwined with other TF code/headers and chain-include
other headers that will not be available in the other environment.

The new approach aims to solve this by separating only the parts that
are really needed into these special headers that are self-contained and
will not chain-include other (non-export) headers. TF-A code should
never include them directly but should instead always include the
respective wrapper header, which will include the required prerequisites
(like <stdint.h>) before including the export header. Third-party code
can include the export headers via its own wrappers that make sure the
necessary definitions are available in whatever way that environment can
provide them.

Change-Id: Ifd769320ba51371439a8e5dd5b79c2516c3b43ab
Signed-off-by: default avatarJulius Werner <jwerner@chromium.org>
      57bf6057
    • Julius Werner's avatar
      Use explicit-width data types in AAPCS parameter structs · 9352be88
      Julius Werner authored 
      

It's not a good idea to use u_register_t for the members of
aapcs64_params_t and aapcs32_params_t, since the width of that type
always depends on the current execution environment. This would cause
problems if e.g. we used this structure to set up the entry point of an
AArch32 program from within an AArch64 program. (It doesn't seem like
any code is doing that today, but it's probably still a good idea to
write this defensively. Also, it helps with my next patch.)

Change-Id: I12c04a85611f2b6702589f3362bea3e6a7c9f776
Signed-off-by: default avatarJulius Werner <jwerner@chromium.org>
      9352be88
    • Julius Werner's avatar
      plat/rockchip: Switch to use new common BL aux parameter library · c1185ffd
      Julius Werner authored 
      

This patch changes all Rockchip platforms to use the new common BL aux
parameter helpers. Since the parameter space is now cleanly split in
generic and vendor-specific parameters and the COREBOOT_TABLE
parameter is now generic, the parameter type number for that parameter
has to change. Since it only affects coreboot which always builds TF as
a submodule and includes its headers directly to get these constants,
this should not cause any issues. In general, after this point, we
should avoid changing already assigned parameter type numbers whenever
possible.

Change-Id: Ic99ddd1e91ff5e5fe212fa30c793a0b8394c9dad
Signed-off-by: default avatarJulius Werner <jwerner@chromium.org>
      c1185ffd
  3. 18 Jul, 2019 1 commit
    • Julius Werner's avatar
      Introduce lightweight BL platform parameter library · b852d229
      Julius Werner authored 
      

This patch adds some common helper code to support a lightweight
platform parameter passing framework between BLs that has already been
used on Rockchip platforms but is more widely useful to others as well.
It can be used as an implementation for the SoC firmware configuration
file mentioned in the docs, and is primarily intended for platforms
that only require a handful of values to be passed and want to get by
without a libfdt dependency. Parameters are stored in a linked list and
the parameter space is split in generic and vendor-specific parameter
types. Generic types will be handled by this code whereas
vendor-specific types have to be handled by a vendor-specific handler
function that gets passed in.

Change-Id: If3413d44e86b99d417294ce8d33eb2fc77a6183f
Signed-off-by: default avatarJulius Werner <jwerner@chromium.org>
      b852d229
  5. 16 Jul, 2019 1 commit
    • Soby Mathew's avatar
      Merge changes from topic "jc/shift-overflow" into integration · d0d0f171
      Soby Mathew authored 
      * changes:
  Enable -Wshift-overflow=2 to check for undefined shift behavior
  Update base code to not rely on undefined overflow behaviour
  Update hisilicon drivers to not rely on undefined overflow behaviour
  Update synopsys drivers to not rely on undefined overflow behaviour
  Update imx platform to not rely on undefined overflow behaviour
  Update mediatek platform to not rely on undefined overflow behaviour
  Update layerscape platform to not rely on undefined overflow behaviour
  Update intel platform to not rely on undefined overflow behaviour
  Update rockchip platform to not rely on undefined overflow behaviour
  Update renesas platform to not rely on undefined overflow behaviour
  Update meson platform to not rely on undefined overflow behaviour
  Update marvell platform to not rely on undefined overflow behaviour
      d0d0f171
  7. 15 Jul, 2019 1 commit
  9. 12 Jul, 2019 18 commits
  11. 11 Jul, 2019 11 commits
  13. 10 Jul, 2019 4 commits