[edk2-devel] [PATCH edk2-platforms v2 1/8] Platform/RaspberryPi: Mark RAM regions as write/execute protectable

["Ard Biesheuvel via groups.io" <ardb+git=google.com@groups.io>]

From: Ard Biesheuvel <ardb@kernel.org>

Mark RAM ranges as write/execute protectable in the GCD memory map. This
is needed to avoid issues with NonCoherentDmaLib in EmbeddedPkg, which
will fail if it does not manage to set the EFI_MEMORY_XP attribute on
the allocated DMA buffers.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
 Platform/RaspberryPi/Library/MemoryInitPeiLib/MemoryInitPeiLib.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Platform/RaspberryPi/Library/MemoryInitPeiLib/MemoryInitPeiLib.c b/Platform/RaspberryPi/Library/MemoryInitPeiLib/MemoryInitPeiLib.c
index 7ba1cc5602d2..cf9eca2ffe9a 100644
--- a/Platform/RaspberryPi/Library/MemoryInitPeiLib/MemoryInitPeiLib.c
+++ b/Platform/RaspberryPi/Library/MemoryInitPeiLib/MemoryInitPeiLib.c
@@ -51,6 +51,8 @@ AddBasicMemoryRegion (
     EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
     EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
     EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |
+    EFI_RESOURCE_ATTRIBUTE_WRITE_PROTECTABLE |
+    EFI_RESOURCE_ATTRIBUTE_EXECUTION_PROTECTABLE |
     EFI_RESOURCE_ATTRIBUTE_TESTED,
     Desc->PhysicalBase,
     Desc->Length
-- 
2.46.0.rc1.232.g9752f9e123-goog



-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#120101): https://edk2.groups.io/g/devel/message/120101
Mute This Topic: https://groups.io/mt/107628975/7686176
Group Owner: devel+owner@edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub [rebecca@openfw.io]
-=-=-=-=-=-=-=-=-=-=-=-