Re: [edk2-devel] [PATCH edk2 v2 1/5] Silicon/Hisilicon: Change updating dsdt in ready to boot event

["Leif Lindholm" <leif@nuviainc.com>]

On Wed, May 27, 2020 at 22:33:54 +0800, Ming Huang wrote:
> The dsdt need be updated before boot to OS, so change the updating
> to ready to boot event and can remove the needless dependence.
> 
> Signed-off-by: Ming Huang <huangming23@huawei.com>

Reviewed-by: Leif Lindholm <leif@nuviainc.com>

> ---
>  Silicon/Hisilicon/Drivers/AcpiPlatformDxe/AcpiPlatform.c      | 56 +++++++++++++++++++-
>  Silicon/Hisilicon/Drivers/AcpiPlatformDxe/AcpiPlatformDxe.inf |  4 +-
>  2 files changed, 56 insertions(+), 4 deletions(-)
> 
> diff --git a/Silicon/Hisilicon/Drivers/AcpiPlatformDxe/AcpiPlatform.c b/Silicon/Hisilicon/Drivers/AcpiPlatformDxe/AcpiPlatform.c
> index b888cb1..c45a0bb 100644
> --- a/Silicon/Hisilicon/Drivers/AcpiPlatformDxe/AcpiPlatform.c
> +++ b/Silicon/Hisilicon/Drivers/AcpiPlatformDxe/AcpiPlatform.c
> @@ -1,7 +1,7 @@
>  /** @file
>  
>    Copyright (c) 2014, Applied Micro Curcuit Corporation. All rights reserved.<BR>
> -  Copyright (c) 2015, Hisilicon Limited. All rights reserved.<BR>
> +  Copyright (c) 2015 - 2020, Hisilicon Limited. All rights reserved.<BR>
>    Copyright (c) 2015, Linaro Limited. All rights reserved.<BR>
>    SPDX-License-Identifier: BSD-2-Clause-Patent
>  
> @@ -23,6 +23,38 @@
>  #include <IndustryStandard/AcpiAml.h>
>  #include "EthMac.h"
>  
> +EFI_EVENT       mUpdateAcpiDsdtTableEvent;
> +
> +VOID
> +EFIAPI
> +UpdateAcpiDsdt (
> +  IN EFI_EVENT         Event,
> +  IN VOID              *Context
> +  )
> +{
> +  EFI_ACPI_TABLE_PROTOCOL *AcpiTableProtocol;
> +  EFI_STATUS              Status;
> +
> +  Status = gBS->LocateProtocol (
> +                  &gEfiAcpiTableProtocolGuid,
> +                  NULL,
> +                  (VOID**)&AcpiTableProtocol
> +                  );
> +
> +  if (EFI_ERROR (Status)) {
> +    DEBUG ((DEBUG_ERROR, " Unable to locate ACPI table protocol\n"));
> +    return;
> +  }
> +
> +  Status = EthMacInit ();
> +  if (EFI_ERROR (Status)) {
> +    DEBUG ((DEBUG_ERROR, " UpdateAcpiDsdtTable Failed, Status = %r\n", Status));
> +  }
> +
> +  gBS->CloseEvent (Event);
> +  return;
> +}
> +
>  EFI_STATUS
>  EFIAPI
>  AcpiPlatformEntryPoint (
> @@ -30,5 +62,25 @@ AcpiPlatformEntryPoint (
>    IN EFI_SYSTEM_TABLE   *SystemTable
>    )
>  {
> -  return EthMacInit();
> +  EFI_STATUS Status;
> +
> +  //
> +  // Register notify function
> +  //
> +  Status = gBS->CreateEventEx (
> +                  EVT_NOTIFY_SIGNAL,
> +                  TPL_CALLBACK,
> +                  UpdateAcpiDsdt,
> +                  NULL,
> +                  &gEfiEventReadyToBootGuid,
> +                  &mUpdateAcpiDsdtTableEvent
> +                  );
> +
> +  if (EFI_ERROR (Status)) {
> +    DEBUG ((DEBUG_ERROR, "Create ReadyToBoot event for UpdateAcpiDsdt failed.\n"));
> +  } else {
> +    DEBUG ((DEBUG_INFO, "Create ReadyToBoot event for UpdateAcpiDsdt success.\n"));
> +  }
> +
> +  return Status;
>  }
> diff --git a/Silicon/Hisilicon/Drivers/AcpiPlatformDxe/AcpiPlatformDxe.inf b/Silicon/Hisilicon/Drivers/AcpiPlatformDxe/AcpiPlatformDxe.inf
> index 53da731..866ff75 100644
> --- a/Silicon/Hisilicon/Drivers/AcpiPlatformDxe/AcpiPlatformDxe.inf
> +++ b/Silicon/Hisilicon/Drivers/AcpiPlatformDxe/AcpiPlatformDxe.inf
> @@ -1,7 +1,7 @@
>  ## @file
>  #
>  #  Copyright (c) 2014, Applied Micro Curcuit Corp. All rights reserved.<BR>
> -#  Copyright (c) 2015, Hisilicon Limited. All rights reserved.<BR>
> +#  Copyright (c) 2015 - 2020, Hisilicon Limited. All rights reserved.<BR>
>  #  Copyright (c) 2015, Linaro Limited. All rights reserved.<BR>
>  #  SPDX-License-Identifier: BSD-2-Clause-Patent
>  #
> @@ -62,5 +62,5 @@
>    gEfiMdeModulePkgTokenSpaceGuid.PcdAcpiDefaultCreatorRevision
>  
>  [Depex]
> -  gEfiAcpiTableProtocolGuid AND gEfiAcpiSdtProtocolGuid AND gHisiBoardNicProtocolGuid AND gHisiInstalledAcpiProtocolGuid
> +  TRUE
>  
> -- 
> 2.8.1
> 
> 
> 
>