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  1. 24 May, 2019 2 commits
  3. 13 Feb, 2019 1 commit
  5. 23 Dec, 2018 1 commit
  7. 02 Dec, 2018 4 commits
  9. 16 Oct, 2018 1 commit
  11. 23 Sep, 2018 2 commits
  13. 20 Aug, 2018 3 commits
  15. 25 Jul, 2018 6 commits
  17. 14 Jun, 2018 1 commit
  19. 03 Jun, 2018 2 commits
  21. 29 May, 2018 2 commits
    • Rick Chen's avatar
      efi_loader: Enable RISC-V support · 6836adbe
      Rick Chen authored 
      We have almost all pieces needed to support RISC-V UEFI binaries in place already.
The only missing piece are ELF relocations for runtime code and
data.

This patch adds respective support in the linker script and the runtime
relocation code. It also allows users to enable the EFI_LOADER configuration
switch on RISC-V platforms.
Signed-off-by: Alexander Graf's avatarAlexander Graf <agraf@suse.de>
      6836adbe
    • Alexander Graf's avatar
      efi_loader: Use EFI_CACHELINE_SIZE in the image loader too · 89aea436
      Alexander Graf authored 
      We were using our EFI_CACHELINE_SIZE define only in the runtime service
code, but left the image loader to use plain CONFIG_SYS_CACHELINE_SIZE.

This patch moves EFI_CACHELINE_SIZE into efi_loader.h and converts
the image loader to use it.
Signed-off-by: Alexander Graf's avatarAlexander Graf <agraf@suse.de>
      89aea436
  23. 11 May, 2018 1 commit
  25. 04 Apr, 2018 5 commits
  27. 09 Feb, 2018 1 commit
  29. 20 Sep, 2017 1 commit
    • Rob Clark's avatar
      efi_loader: efi variable support · ad644e7c
      Rob Clark authored 
      Add EFI variable support, mapping to u-boot environment variables.
Variables are pretty important for setting up boot order, among other
things.  If the board supports saveenv, then it will be called in
ExitBootServices() to persist variables set by the efi payload.  (For
example, fallback.efi configuring BootOrder and BootXXXX load-option
variables.)

Variables are *not* currently exposed at runtime, post ExitBootServices.
On boards without a dedicated device for storage, which the loaded OS
is not trying to also use, this is rather tricky.  One idea, at least
for boards that can persist RAM across reboot, is to keep a "journal"
of modified variables in RAM, and then turn halt into a reboot into
u-boot, plus store variables, plus halt.  Whatever the solution, it
likely involves some per-board support.

Mapping between EFI variables and u-boot variables:

  efi_$guid_$varname = {attributes}(type)value

For example:

  efi_8be4df61-93ca-11d2-aa0d-00e098032b8c_OsIndicationsSupported=
     "{ro,boot,run}(blob)0000000000000000"
  efi_8be4df61-93ca-11d2-aa0d-00e098032b8c_BootOrder=
     "(blob)00010000"

The attributes are a comma separated list of these possible
attributes:

  + ro   - read-only
  + boot - boot-services access
  + run  - runtime access

NOTE: with current implementation, no variables are available after
ExitBootServices, and all are persisted (if possible).

If not specified, the attributes default to "{boot}".

The required type is one of:

  + utf8 - raw utf8 string
  + blob - arbitrary length hex string
Signed-off-by: default avatarRob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf's avatarAlexander Graf <agraf@suse.de>
      ad644e7c
  31. 18 Sep, 2017 1 commit
  33. 12 Aug, 2017 1 commit
  35. 19 Oct, 2016 2 commits
  37. 18 Oct, 2016 1 commit
    • Alexander Graf's avatar
      efi_loader: Allow boards to implement get_time and reset_system · 80a4800e
      Alexander Graf authored 
      EFI allows an OS to leverage firmware drivers while the OS is running. In the
generic code we so far had to stub those implementations out, because we would
need board specific knowledge about MMIO setups for it.

However, boards can easily implement those themselves. This patch provides the
framework so that a board can implement its own versions of get_time and
reset_system which would actually do something useful.

While at it we also introduce a simple way for code to reserve MMIO pointers
as runtime available.
Signed-off-by: Alexander Graf's avatarAlexander Graf <agraf@suse.de>
      80a4800e
  39. 06 Jun, 2016 1 commit
    • Alexander Graf's avatar
      efi_loader: Move to normal debug infrastructure · edcef3ba
      Alexander Graf authored 
      We introduced special "DEBUG_EFI" defines when the efi loader
support was new. After giving it a bit of thought, turns out
we really didn't have to - the normal #define DEBUG infrastructure
works well enough for efi loader as well.

So this patch switches to the common debug() and #define DEBUG
way of printing debug information.
Signed-off-by: Alexander Graf's avatarAlexander Graf <agraf@suse.de>
      edcef3ba
  41. 27 May, 2016 1 commit
    • Alexander Graf's avatar
      efi_loader: Clean up system table on exit · ae874405
      Alexander Graf authored 
      We put the system table into our runtime services data section so that
payloads may still access it after exit_boot_services. However, most fields
in it are quite useless once we're in that state, so let's just patch them
out.

With this patch we don't get spurious warnings when running EFI binaries
anymore.
Signed-off-by: Alexander Graf's avatarAlexander Graf <agraf@suse.de>
      ae874405