Re: [edk2-devel] [PATCH] MdeModulePkg/DxeCore: Allow relocation of images with large address

["Jeff Brasen via groups.io" <jbrasen=nvidia.com@groups.io>]

Any  thoughts/feedback on this patch?

Thanks,
Jeff


> -----Original Message-----
> From: Jeff Brasen <jbrasen@nvidia.com>
> Sent: Monday, May 15, 2023 5:49 PM
> To: devel@edk2.groups.io
> Cc: jian.j.wang@intel.com; gaoliming@byosoft.com.cn; dandan.bi@intel.com;
> Jeff Brasen <jbrasen@nvidia.com>; Ashish Singhal
> <ashishsingha@nvidia.com>
> Subject: [PATCH] MdeModulePkg/DxeCore: Allow relocation of images with
> large address
> 
> Add PCD to control if modules with start addresses in PE/COFF > 0x100000
> attempt to load at specified address.
> If a module has an address in this range and there is untested memory
> DxeCore will attempt to promote all memory to tested which bypasses any
> memory testing that would occur later in boot.
> 
> There are several existing AARCH64 option roms that have base addresses of
> 0x180000000.
> 
> Signed-off-by: Jeff Brasen <jbrasen@nvidia.com>
> Reviewed-by: Ashish Singhal <ashishsingha@nvidia.com>
> ---
>  MdeModulePkg/Core/Dxe/DxeMain.inf   | 1 +
>  MdeModulePkg/Core/Dxe/Image/Image.c | 4 +++-
>  MdeModulePkg/MdeModulePkg.dec       | 7 +++++++
>  3 files changed, 11 insertions(+), 1 deletion(-)
> 
> diff --git a/MdeModulePkg/Core/Dxe/DxeMain.inf
> b/MdeModulePkg/Core/Dxe/DxeMain.inf
> index 35d5bf0dee..16871f2021 100644
> --- a/MdeModulePkg/Core/Dxe/DxeMain.inf
> +++ b/MdeModulePkg/Core/Dxe/DxeMain.inf
> @@ -187,6 +187,7 @@
>    gEfiMdeModulePkgTokenSpaceGuid.PcdHeapGuardPropertyMask
> ## CONSUMES
>    gEfiMdeModulePkgTokenSpaceGuid.PcdCpuStackGuard                           ##
> CONSUMES
>    gEfiMdeModulePkgTokenSpaceGuid.PcdFwVolDxeMaxEncapsulationDepth
> ## CONSUMES
> +  gEfiMdeModulePkgTokenSpaceGuid.PcdImageLargeAddressLoad
> ## CONSUMES
> 
>  # [Hob]
>  # RESOURCE_DESCRIPTOR   ## CONSUMES
> diff --git a/MdeModulePkg/Core/Dxe/Image/Image.c
> b/MdeModulePkg/Core/Dxe/Image/Image.c
> index 9dbfb2a1fa..6bc3a549ae 100644
> --- a/MdeModulePkg/Core/Dxe/Image/Image.c
> +++ b/MdeModulePkg/Core/Dxe/Image/Image.c
> @@ -680,7 +680,9 @@ CoreLoadPeImage (
>                     );
>        }
>      } else {
> -      if ((Image->ImageContext.ImageAddress >= 0x100000) || Image-
> >ImageContext.RelocationsStripped) {
> +      if ((PcdGetBool (PcdImageLargeAddressLoad) && ((Image-
> >ImageContext.ImageAddress) >= 0x100000)) ||
> +          Image->ImageContext.RelocationsStripped)
> +      {
>          Status = CoreAllocatePages (
>                     AllocateAddress,
>                     (EFI_MEMORY_TYPE)(Image-
> >ImageContext.ImageCodeMemoryType),
> diff --git a/MdeModulePkg/MdeModulePkg.dec
> b/MdeModulePkg/MdeModulePkg.dec index 95dd077e19..6fd1bd7b8f
> 100644
> --- a/MdeModulePkg/MdeModulePkg.dec
> +++ b/MdeModulePkg/MdeModulePkg.dec
> @@ -1116,6 +1116,13 @@
>    # @Prompt Output MMIO address of Trace Hub message.
> 
> gEfiMdeModulePkgTokenSpaceGuid.PcdTraceHubDebugMmioAddress|0|UIN
> T64|0x30001058
> 
> +  ## Indicates if images with large load address (>0x100000) should
> attempted to load at specified location.
> +  #  If enabled, attempt to allocate at specfied location will be attempted with
> a fall back to any address.
> +  #   TRUE  - UEFI will attempt to load at specified location.<BR>
> +  #   FALSE - UEFI will load at any address<BR>
> +  # @Prompt Enable large address image loading.
> +
> +
> gEfiMdeModulePkgTokenSpaceGuid.PcdImageLargeAddressLoad|TRUE|BOOL
> EAN|0
> + x30001059
> +
>  [PcdsFixedAtBuild, PcdsPatchableInModule]
>    ## Dynamic type PCD can be registered callback function for Pcd setting
> action.
>    #  PcdMaxPeiPcdCallBackNumberPerPcdEntry indicates the maximum
> number of callback function
> --
> 2.25.1



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