[edk2-devel] EFI_SYSTEM_TABLE allocated by AllocateRuntimeCopyPool isn't aligned to 4KB

["Rebecca Cran" <rebecca@bsdio.com>]

I've been working on updating the T32 script EfiLoadDxe.cmm in 
EmbeddedPkg/Scripts/LauterbachT32 and one of the issues I've run into is 
that the EFI_SYSTEM_TABLE - pointed to by `gST` and `gDxeCoreST` - isn't 
aligned to 4KB like the script expects.

Instead, I'm seeing AllocateRuntimeCopyPool return 0xFB7D0018 in 
MdeModulePkg/Core/Dxe/DxeMain/DxeMain.c:

//
// Allocate the EFI System Table and EFI Runtime Service Table from 
EfiRuntimeServicesData
// Use the templates to initialize the contents of the EFI System Table 
and EFI Runtime Services Table
//
gDxeCoreST = AllocateRuntimeCopyPool (sizeof (EFI_SYSTEM_TABLE), 
&mEfiSystemTableTemplate);
ASSERT (gDxeCoreST != NULL);

I'm wondering which is wrong: should AllocateRuntimeCopyPool be 
returning a 4KB-aligned pointer, or is the script's assumption wrong?


-- 
Rebecca Cran



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