Reviewed-by: Nate DeSimone <nathaniel.l.desim...@intel.com>
> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of
> Benjamin Doron
> Sent: Friday, August 13, 2021 5:25 PM
> To: devel@edk2.groups.io
> Cc: Chiu, Chasel <chasel.c...@intel.com>; Desimone, Nathaniel L
> <nathaniel.l.desim...@intel.com>; Michael Kubacki
> <michael.kuba...@microsoft.com>
> Subject: [edk2-devel] [edk2-platforms][PATCH v2 1/5]
> KabylakeOpenBoardPkg/BaseEcLib: Add some common EC commands
>
> Add EC read (0x80) and write (0x81) commands, as defined by ACPI.
>
> Cc: Chasel Chiu <chasel.c...@intel.com>
> Cc: Nate DeSimone <nathaniel.l.desim...@intel.com>
> Cc: Michael Kubacki <michael.kuba...@microsoft.com>
> Signed-off-by: Benjamin Doron <benjamin.doro...@gmail.com>
> ---
> Platform/Intel/KabylakeOpenBoardPkg/Include/Library/EcLib.h | 32
> +++++++++
>
> Platform/Intel/KabylakeOpenBoardPkg/KabylakeRvp3/Include/EcCommands
> .h | 2 +
> Platform/Intel/KabylakeOpenBoardPkg/Library/BaseEcLib/BaseEcLib.c | 4
> +-
> Platform/Intel/KabylakeOpenBoardPkg/Library/BaseEcLib/BaseEcLib.inf | 1
> +
> Platform/Intel/KabylakeOpenBoardPkg/Library/BaseEcLib/EcCommands.c
> | 76 ++++++++++++++++++++
> 5 files changed, 114 insertions(+), 1 deletion(-)
>
> diff --git a/Platform/Intel/KabylakeOpenBoardPkg/Include/Library/EcLib.h
> b/Platform/Intel/KabylakeOpenBoardPkg/Include/Library/EcLib.h
> index 04ce076f91b7..7c58e592d965 100644
> --- a/Platform/Intel/KabylakeOpenBoardPkg/Include/Library/EcLib.h
> +++ b/Platform/Intel/KabylakeOpenBoardPkg/Include/Library/EcLib.h
> @@ -103,4 +103,36 @@ LpcEcInterface (
> IN OUT UINT8 *DataBuffer ); +/**+ Read a byte of EC
> RAM.++
> @param[in] Address Address to read+ @param[out] Data
> Data
> received++ @retval EFI_SUCCESS Command success+ @retval
> EFI_DEVICE_ERROR Command error+ @retval EFI_TIMEOUT Command
> timeout+**/+EFI_STATUS+EcRead (+ IN UINT8 Address,+ OUT
> UINT8 *Data+ );++/**+ Write a byte of EC RAM.++ @param[in]
> Address Address to write+ @param[in] Data Data to
> write++
> @retval EFI_SUCCESS Command success+ @retval EFI_DEVICE_ERROR
> Command error+ @retval EFI_TIMEOUT Command
> timeout+**/+EFI_STATUS+EcWrite (+ IN UINT8 Address,+ IN
> UINT8 Data+ );+ #endifdiff --git
> a/Platform/Intel/KabylakeOpenBoardPkg/KabylakeRvp3/Include/EcComman
> ds.h
> b/Platform/Intel/KabylakeOpenBoardPkg/KabylakeRvp3/Include/EcComman
> ds.h
> index be56d134edc7..a4ab192d8ce1 100644
> ---
> a/Platform/Intel/KabylakeOpenBoardPkg/KabylakeRvp3/Include/EcComman
> ds.h
> +++
> b/Platform/Intel/KabylakeOpenBoardPkg/KabylakeRvp3/Include/EcComman
> d
> +++ s.h
> @@ -40,5 +40,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
> // Data read from the EC data port is valid only when OBF=1. // #define
> EC_C_FAB_ID 0x0D // Get the board fab ID in the lower 3
> bits+#define EC_C_ACPI_READ 0x80 // Read a byte of EC
> RAM+#define EC_C_ACPI_WRITE 0x81 // Write a byte of EC RAM
> #endif // EC_COMMANDS_H_diff --git
> a/Platform/Intel/KabylakeOpenBoardPkg/Library/BaseEcLib/BaseEcLib.c
> b/Platform/Intel/KabylakeOpenBoardPkg/Library/BaseEcLib/BaseEcLib.c
> index eda6f7d2e142..66bd478906fb 100644
> --- a/Platform/Intel/KabylakeOpenBoardPkg/Library/BaseEcLib/BaseEcLib.c
> +++ b/Platform/Intel/KabylakeOpenBoardPkg/Library/BaseEcLib/BaseEcLib.c
> @@ -32,7 +32,9 @@ typedef struct {
> } EC_COMMAND_TABLE; EC_COMMAND_TABLE mEcCommand[] = {-
> {EC_C_FAB_ID , 0, 2, TRUE} // Get the board fab ID in the
> lower 3
> bits+ {EC_C_FAB_ID , 0, 2, TRUE}, // Get the board fab ID
> in the
> lower 3 bits+ {EC_C_ACPI_READ , 1, 1, TRUE}, // Read a byte
> of EC
> RAM+ {EC_C_ACPI_WRITE , 2, 0, TRUE} // Write a byte of EC
> RAM };
> //diff --git
> a/Platform/Intel/KabylakeOpenBoardPkg/Library/BaseEcLib/BaseEcLib.inf
> b/Platform/Intel/KabylakeOpenBoardPkg/Library/BaseEcLib/BaseEcLib.inf
> index c7de77d80f3d..f0b4c67fffc2 100644
> --- a/Platform/Intel/KabylakeOpenBoardPkg/Library/BaseEcLib/BaseEcLib.inf
> +++
> b/Platform/Intel/KabylakeOpenBoardPkg/Library/BaseEcLib/BaseEcLib.in
> +++ f
> @@ -27,3 +27,4 @@
> [Sources] BaseEcLib.c+ EcCommands.cdiff --git
> a/Platform/Intel/KabylakeOpenBoardPkg/Library/BaseEcLib/EcCommands.c
> b/Platform/Intel/KabylakeOpenBoardPkg/Library/BaseEcLib/EcCommands.c
> new file mode 100644
> index 000000000000..d14edb75de36
> --- /dev/null
> +++
> b/Platform/Intel/KabylakeOpenBoardPkg/Library/BaseEcLib/EcCommands.c
> @@ -0,0 +1,76 @@
> +/** @file+ Common EC commands.++Copyright (c) 2019, Intel Corporation.
> All rights reserved.<BR>+SPDX-License-Identifier: BSD-2-Clause-
> Patent++**/++#include <Base.h>+#include <Uefi.h>+#include
> <Library/EcLib.h>++/**+ Read a byte of EC RAM.++ @param[in] Address
> Address to read+ @param[out] Data Data received++ @retval
> EFI_SUCCESS Command success+ @retval EFI_DEVICE_ERROR
> Command error+ @retval EFI_TIMEOUT Command
> timeout+**/+EFI_STATUS+EcRead (+ IN UINT8 Address,+ OUT
> UINT8 *Data+ )+{+ UINT8 DataSize;+
> UINT8
> DataBuffer[1];+ EFI_STATUS Status;++ if (Data == NULL) {+
> return
> EFI_INVALID_PARAMETER;+ }++ // Prepare arguments for LpcEcInterface()+
> DataSize = 1;+ DataBuffer[0] = Address;++ Status = LpcEcInterface
> (EC_C_ACPI_READ, &DataSize, DataBuffer);+ if (EFI_ERROR(Status)) {+
> return Status;+ }++ // Write caller's pointer from returned data and return
> success+ *Data = DataBuffer[0];+ return EFI_SUCCESS;+}++/**+ Write a
> byte of EC RAM.++ @param[in] Address Address to write+ @param[in]
> Data Data to write++ @retval EFI_SUCCESS Command
> success+
> @retval EFI_DEVICE_ERROR Command error+ @retval EFI_TIMEOUT
> Command timeout+**/+EFI_STATUS+EcWrite (+ IN UINT8
> Address,+ IN UINT8 Data+ )+{+ UINT8
> DataSize;+ UINT8
> DataBuffer[2];++ // Prepare arguments for LpcEcInterface()+ DataSize = 2;+
> DataBuffer[0] = Address;+ DataBuffer[1] = Data;++ return LpcEcInterface
> (EC_C_ACPI_WRITE, &DataSize, DataBuffer);+}--
> 2.31.1
>
>
>
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