As per ACPI Spec 6.5+ Table 5-9 if xDSDT is available,
it should be used first. Handle required flow when xDSDT
is absent or present.

Test: Tested on RISCV64 Qemu platform with xDSDT and booted to
linux kernel.

Cc: Liming Gao <gaoliming@...>
Cc: Zhiguang Liu <zhiguang.liu@...>
Cc: Dandan Bi <dandan.bi@...>
Cc: Pedro Falcato <pedro.falcato@...>
Cc: devel@edk2.groups.io
Signed-off-by: Dhaval Sharma <dhaval@...>
Acked-by: Chasel Chiu <chasel.chiu@...>

Notes:
    v5:
    - If DSDT is not found, throw error and continue to build other tables with
      an error log
    v4:
    - Fix typos and commit message adding more clarity to patch subject
    v3:
    - Added description of ACPI spec clarification based on which this patch is created
    - Optimizing if-else flow
    v2:
    - Added proper indentation for else if

https://github.com/tianocore/edk2/pull/5311

Dhaval (1):
  MdeModulePkg/AcpiTableDxe: Prefer xDSDT over DSDT when installing
    tables

 MdeModulePkg/Universal/Acpi/AcpiTableDxe/AcpiTableProtocol.c | 24 ++++++++++++++------
 1 file changed, 17 insertions(+), 7 deletions(-)

-- 
2.39.2



-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#114654): https://edk2.groups.io/g/devel/message/114654
Mute This Topic: https://groups.io/mt/104011825/1787277
Group Owner: devel+owner@edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org]
-=-=-=-=-=-=-=-=-=-=-=-