Hi,

I didn't receive any comments with this patch yet. Maybe you missed this email.
The new added function is only a few part of the ResetSystemRuntimeDxe to 
provide the reset function.
As I know, platforms always have their own ResetSystemLib instance and do not 
use the instance in MdeModulePkg.
While the platform contains a driver base on the new interface(the driver may 
be in the edk2 repo), the driver would not find the interface's implement and 
cause a link error.
I suggest all platform code should update it to avoid the link error if the 
platform is working with the edk2 master repo.

Thanks,
Zhichao

> -----Original Message-----
> From: Bu, Daocheng
> Sent: Monday, April 15, 2019 3:56 PM
> To: Gao, Zhichao <zhichao....@intel.com>; devel@edk2.groups.io
> Cc: Piwko, Maciej <maciej.pi...@intel.com>; Oram, Isaac W
> <isaac.w.o...@intel.com>; Gao, Liming <liming....@intel.com>
> Subject: RE: [edk2-platforms/devel-MinPlatform][PATCH 3/5]
> LewisburgPkg/DxeRuntimeResetSystemLib: Add a new API ResetSystem
> 
> 
> Hi Maciej,
> 
>  Please help review this code from PCH perspective.
>  If you approve this change , please also help cherry pick this change to
> ServerSiliconPkg\Pch\SouthClusterLbg pkg @10nm trunk.
> 
> Thanks,
>   Amos
> 
> UEFI FW, IAFW or System Firmware is more generic & accurate it's not BIOS
> anymore!
> 
> -----Original Message-----
> From: Gao, Zhichao
> Sent: Monday, April 15, 2019 11:08 AM
> To: devel@edk2.groups.io
> Cc: Piwko, Maciej <maciej.pi...@intel.com>; Bu, Daocheng
> <daocheng...@intel.com>; Oram, Isaac W <isaac.w.o...@intel.com>; Gao,
> Liming <liming....@intel.com>
> Subject: [edk2-platforms/devel-MinPlatform][PATCH 3/5]
> LewisburgPkg/DxeRuntimeResetSystemLib: Add a new API ResetSystem
> 
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1460
> 
> Add a new API ResetSystem to this ResetSystemLib instance.
> It only adds the basic functions from ResetSystemRuntimeDxe.
> Lacking of this interface may cause link error, if some drivers use this new 
> API
> and link to this library instance.
> Make the ResetPlatformSpecific's parameters same with the interface in
> Edk2 repo.
> Notes:
> This library API only provide a basic function of reset. If the consumers want
> full functions, they should use the instance in the MdeModulePkg and make
> sure the depex driver is dispatched.
> 
> Cc: "Piwko, Maciej" <maciej.pi...@intel.com>
> Cc: "Bu, Daocheng" <daocheng...@intel.com>
> Cc: "Oram, Isaac W" <isaac.w.o...@intel.com>
> Cc: Liming Gao <liming....@intel.com>
> Signed-off-by: Zhichao Gao <zhichao....@intel.com>
> ---
>  .../DxeRuntimeResetSystemLib/PchReset.c       | 47 +++++++++++++++++--
>  1 file changed, 44 insertions(+), 3 deletions(-)
> 
> diff --git
> a/Silicon/Intel/LewisburgPkg/Library/DxeRuntimeResetSystemLib/PchReset.
> c
> b/Silicon/Intel/LewisburgPkg/Library/DxeRuntimeResetSystemLib/PchReset.
> c
> index cdc0f19c17..673f42e72c 100644
> ---
> a/Silicon/Intel/LewisburgPkg/Library/DxeRuntimeResetSystemLib/PchReset.
> c
> +++
> b/Silicon/Intel/LewisburgPkg/Library/DxeRuntimeResetSystemLib/PchRes
> +++ et.c
> @@ -1,6 +1,6 @@
>  /** @file
> 
> -Copyright (c) 2018, Intel Corporation. All rights reserved.<BR>
> +Copyright (c) 2018 - 2019, Intel Corporation. All rights reserved.<BR>
>  This program and the accompanying materials are licensed and made
> available under  the terms and conditions of the BSD License that
> accompanies this distribution.
>  The full text of the license may be found at @@ -255,7 +255,6 @@
> ResetShutdown (
>  /**
>    Calling this function causes the system to enter a power state for platform
> specific.
> 
> -  @param[in] ResetStatus          The status code for the reset.
>    @param[in] DataSize             The size of ResetData in bytes.
>    @param[in] ResetData            Optional element used to introduce a 
> platform
> specific reset.
>                                    The exact type of the reset is defined by 
> the EFI_GUID that
> follows @@ -265,7 +264,6 @@ ResetShutdown (  VOID  EFIAPI
> ResetPlatformSpecific (
> -  IN EFI_STATUS       ResetStatus,
>    IN UINTN            DataSize,
>    IN VOID             *ResetData OPTIONAL
>    )
> @@ -306,6 +304,49 @@ EnterS3WithImmediateWake (
>    PchReset (mPchResetInstance, (PCH_RESET_TYPE) EfiResetWarm);  }
> 
> +/**
> +  The ResetSystem function resets the entire platform.
> +
> +  @param[in] ResetType      The type of reset to perform.
> +  @param[in] ResetStatus    The status code for the reset.
> +  @param[in] DataSize       The size, in bytes, of ResetData.
> +  @param[in] ResetData      For a ResetType of EfiResetCold, EfiResetWarm,
> or EfiResetShutdown
> +                            the data buffer starts with a Null-terminated 
> string, optionally
> +                            followed by additional binary data. The string 
> is a description
> +                            that the caller may use to further indicate the 
> reason for the
> +                            system reset.
> +**/
> +VOID
> +EFIAPI
> +ResetSystem (
> +  IN EFI_RESET_TYPE               ResetType,
> +  IN EFI_STATUS                   ResetStatus,
> +  IN UINTN                        DataSize,
> +  IN VOID                         *ResetData OPTIONAL
> +  )
> +{
> +  switch (ResetType) {
> +  case EfiResetWarm:
> +    ResetWarm ();
> +    break;
> +
> +  case EfiResetCold:
> +    ResetCold ();
> +    break;
> +
> +  case EfiResetShutdown:
> +    ResetShutdown ();
> +    return ;
> +
> +  case EfiResetPlatformSpecific:
> +    ResetPlatformSpecific (DataSize, ResetData);
> +    return;
> +
> +  default:
> +    return ;
> +  }
> +}
> +
>  /**
>    <b>PchReset Runtime  DXE Driver Entry Point</b>\n
>    - <b>Introduction</b>\n
> --
> 2.21.0.windows.1


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