Re: [PATCH edk2-platforms v2 2/2] Platform/ARM/Sgi: Pick ACPI tables to install based on platform ID

[Ard Biesheuvel <ard.biesheuvel@linaro.org>]

On 15 June 2018 at 14:00, Chandni Cherukuri <chandni.cherukuri@arm.com> wrote:
> Use the platform ID and config ID values from the platform ID
> HOB to choose the right set of ACPI tables to be installed.
>
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Chandni Cherukuri <chandni.cherukuri@arm.com>
> ---
>  Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.c   | 33 +++++++++++++++++---
>  Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.inf |  2 ++
>  Platform/ARM/SgiPkg/SgiPlatform.dsc                     |  1 +
>  Platform/ARM/SgiPkg/SgiPlatform.fdf                     |  1 +
>  4 files changed, 32 insertions(+), 5 deletions(-)
>
> diff --git a/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.c b/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.c
> index edaae5b..f077a2c 100644
> --- a/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.c
> +++ b/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.c
> @@ -14,6 +14,8 @@
>
>  #include <Library/AcpiLib.h>
>  #include <Library/DebugLib.h>
> +#include <Library/HobLib.h>
> +#include <SgiPlatform.h>
>
>  EFI_STATUS
>  InitVirtioBlockIo (
> @@ -28,20 +30,41 @@ ArmSgiPkgEntryPoint (
>    )
>  {
>    EFI_STATUS              Status;
> +  VOID                    *PlatformIdHob;
> +  SGI_PLATFORM_DESCRIPTOR *HobData;
> +  UINT32                  ConfigId;
> +  UINT32                  PartNum;
>
> -  Status = LocateAndInstallAcpiFromFv (&gSgi575AcpiTablesiFileGuid);
> -  if (EFI_ERROR (Status)) {
> -    DEBUG ((DEBUG_ERROR, "%a: Failed to install ACPI tables\n", __FUNCTION__));
> -    return Status;
> +  PlatformIdHob = GetFirstGuidHob (&gArmSgiPlatformIdDescriptorGuid);
> +  if (PlatformIdHob == NULL) {
> +    DEBUG ((DEBUG_ERROR, "Platform ID HOB is NULL\n"));
> +    return EFI_INVALID_PARAMETER;
> +  }
> +
> +  HobData = (SGI_PLATFORM_DESCRIPTOR *)(GET_GUID_HOB_DATA (PlatformIdHob));
> +
> +  PartNum = (HobData->PlatformId & SGI_PART_NUM_MASK);
> +  ConfigId = ((HobData->PlatformId >> SGI_CONFIG_SHIFT) & SGI_CONFIG_MASK);
> +
> +  if ((PartNum == SGI575_PART_NUM) && (ConfigId == SGI575_CONF_NUM)) {
> +    Status = LocateAndInstallAcpiFromFv (&gSgi575AcpiTablesiFileGuid);
> +    if (EFI_ERROR (Status)) {
> +      DEBUG ((DEBUG_ERROR, "%a: Failed to install ACPI tables\n", __FUNCTION__));
> +      return Status;
> +    }
> +  } else {
> +    DEBUG ((DEBUG_ERROR, "PlatformDxe: Unsupported Platform Id\n"));
> +    return EFI_UNSUPPORTED;
>    }
>


> -  Status = EFI_REQUEST_UNLOAD_IMAGE;
>    if (FeaturePcdGet (PcdVirtioSupported)) {
>      Status = InitVirtioBlockIo (ImageHandle);
>      if (EFI_ERROR (Status)) {
>        DEBUG ((DEBUG_ERROR, "%a: Failed to install Virtio Block device\n",
>          __FUNCTION__));
>      }
> +  } else {
> +    Status = EFI_REQUEST_UNLOAD_IMAGE;
>    }
>

This is an unrelated (and unnecessary) change.


>    return Status;
> diff --git a/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.inf b/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.inf
> index 51ad22f..b6b8209 100644
> --- a/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.inf
> +++ b/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.inf
> @@ -30,10 +30,12 @@
>
>  [LibraryClasses]
>    AcpiLib
> +  HobLib
>    UefiDriverEntryPoint
>    VirtioMmioDeviceLib
>
>  [Guids]
> +  gArmSgiPlatformIdDescriptorGuid
>    gSgi575AcpiTablesiFileGuid
>
>  [FeaturePcd]
> diff --git a/Platform/ARM/SgiPkg/SgiPlatform.dsc b/Platform/ARM/SgiPkg/SgiPlatform.dsc
> index a56175e..7b8e051 100644
> --- a/Platform/ARM/SgiPkg/SgiPlatform.dsc
> +++ b/Platform/ARM/SgiPkg/SgiPlatform.dsc
> @@ -199,6 +199,7 @@
>      <LibraryClasses>
>        NULL|MdeModulePkg/Library/LzmaCustomDecompressLib/LzmaCustomDecompressLib.inf
>    }
> +  Platform/ARM/SgiPkg/Library/SgiPlatformPei/SgiPlatformPei.inf
>
>    #
>    # DXE
> diff --git a/Platform/ARM/SgiPkg/SgiPlatform.fdf b/Platform/ARM/SgiPkg/SgiPlatform.fdf
> index 17cdf48..0e5739e 100644
> --- a/Platform/ARM/SgiPkg/SgiPlatform.fdf
> +++ b/Platform/ARM/SgiPkg/SgiPlatform.fdf
> @@ -220,6 +220,7 @@ READ_LOCK_STATUS   = TRUE
>    INF MdeModulePkg/Universal/FaultTolerantWritePei/FaultTolerantWritePei.inf
>    INF MdeModulePkg/Universal/PCD/Pei/Pcd.inf
>    INF MdeModulePkg/Universal/Variable/Pei/VariablePei.inf
> +  INF Platform/ARM/SgiPkg/Library/SgiPlatformPei/SgiPlatformPei.inf
>
>    FILE FV_IMAGE = 9E21FD93-9C72-4c15-8C4B-E77F1DB2D792 {
>      SECTION GUIDED EE4E5898-3914-4259-9D6E-DC7BD79403CF PROCESSING_REQUIRED = TRUE {
> --
> 2.7.4
>