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UefipayloadPkg: Protect coreboot tables

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Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
This commit is contained in:
Patrick Rudolph
2020-10-12 07:55:44 -06:00
committed by Jeremy Soller
parent 876c1d36b3
commit d90d84a4f7
1 changed files with 19 additions and 7 deletions
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26
UefiPayloadPkg/BlSupportPei/BlSupportPei.c
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@@ -390,12 +390,24 @@ BlPeiEntryPoint (
EFI_PEI_GRAPHICS_DEVICE_INFO_HOB GfxDeviceInfo; EFI_PEI_GRAPHICS_DEVICE_INFO_HOB GfxDeviceInfo;
EFI_PEI_GRAPHICS_DEVICE_INFO_HOB *NewGfxDeviceInfo; EFI_PEI_GRAPHICS_DEVICE_INFO_HOB *NewGfxDeviceInfo;
// Report lower 640KB of RAM.
// Mark memory as reserved to keep coreboot header in place.
//
BuildResourceDescriptorHob (
EFI_RESOURCE_MEMORY_RESERVED,
(
EFI_RESOURCE_ATTRIBUTE_PRESENT |
EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
EFI_RESOURCE_ATTRIBUTE_TESTED |
EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
),
(EFI_PHYSICAL_ADDRESS)(0),
(UINT64)(0x1000)
);
//
// Report lower 640KB of RAM. Attribute EFI_RESOURCE_ATTRIBUTE_TESTED
// is intentionally omitted to prevent erasing of the coreboot header
// record before it is processed by ParseMemoryInfo.
//
BuildResourceDescriptorHob ( BuildResourceDescriptorHob (
EFI_RESOURCE_SYSTEM_MEMORY, EFI_RESOURCE_SYSTEM_MEMORY,
( (
@@ -406,8 +418,8 @@ BlPeiEntryPoint (
EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE | EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
), ),
(EFI_PHYSICAL_ADDRESS)(0 + 0x1000), (EFI_PHYSICAL_ADDRESS)(0x1000),
(UINT64)(0xA0000 - 0x1000) (UINT64)(0x9F000)
); );
BuildResourceDescriptorHob ( BuildResourceDescriptorHob (