Re: [edk2-devel] [PATCH v2 21/34] MdePkg: Add LoongArch LOONGARCH64 binding

["Michael D Kinney" <michael.d.kinney@intel.com>]

Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>

> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Chao Li
> Sent: Wednesday, September 14, 2022 2:41 AM
> To: devel@edk2.groups.io
> Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Gao, Liming <gaoliming@byosoft.com.cn>; Liu, Zhiguang <zhiguang.liu@intel.com>;
> Baoqi Zhang <zhangbaoqi@loongson.cn>; Dongyan Qian <qiandongyan@loongson.cn>
> Subject: [edk2-devel] [PATCH v2 21/34] MdePkg: Add LoongArch LOONGARCH64 binding
> 
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4053
> 
> Add LOONGARCH64 sections in MdePkg.dec and LOONGARCH64 ProcessorBind.h
> 
> Cc: Michael D Kinney <michael.d.kinney@intel.com>
> Cc: Liming Gao <gaoliming@byosoft.com.cn>
> Cc: Zhiguang Liu <zhiguang.liu@intel.com>
> 
> Signed-off-by: Chao Li <lichao@loongson.cn>
> Co-authored-by: Baoqi Zhang <zhangbaoqi@loongson.cn>
> Co-authored-by: Dongyan Qian <qiandongyan@loongson.cn>
> ---
>  MdePkg/Include/LoongArch64/ProcessorBind.h | 120 +++++++++++++++++++++
>  MdePkg/MdePkg.dec                          |   4 +
>  MdePkg/MdePkg.dsc                          |   3 +-
>  3 files changed, 126 insertions(+), 1 deletion(-)
>  create mode 100644 MdePkg/Include/LoongArch64/ProcessorBind.h
> 
> diff --git a/MdePkg/Include/LoongArch64/ProcessorBind.h b/MdePkg/Include/LoongArch64/ProcessorBind.h
> new file mode 100644
> index 0000000000..502d479099
> --- /dev/null
> +++ b/MdePkg/Include/LoongArch64/ProcessorBind.h
> @@ -0,0 +1,120 @@
> +/** @file
> 
> +  Processor or Compiler specific defines and types for LoongArch
> 
> +
> 
> +  Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.<BR>
> 
> +
> 
> +  SPDX-License-Identifier: BSD-2-Clause-Patent
> 
> +
> 
> +**/
> 
> +
> 
> +#ifndef PROCESSOR_BIND_H_
> 
> +#define PROCESSOR_BIND_H_
> 
> +
> 
> +//
> 
> +// Define the processor type so other code can make processor based choices
> 
> +//
> 
> +#define MDE_CPU_LOONGARCH64
> 
> +
> 
> +#define EFIAPI
> 
> +
> 
> +//
> 
> +// Make sure we are using the correct packing rules per EFI specification
> 
> +//
> 
> +#ifndef __GNUC__
> 
> +  #pragma pack()
> 
> +#endif
> 
> +
> 
> +//
> 
> +// Assume standard LoongArch 64-bit alignment.
> 
> +// Need to check portability of long long
> 
> +//
> 
> +typedef unsigned long   UINT64;
> 
> +typedef long            INT64;
> 
> +typedef unsigned int    UINT32;
> 
> +typedef int             INT32;
> 
> +typedef unsigned short  UINT16;
> 
> +typedef unsigned short  CHAR16;
> 
> +typedef short           INT16;
> 
> +typedef unsigned char   BOOLEAN;
> 
> +typedef unsigned char   UINT8;
> 
> +typedef char            CHAR8;
> 
> +typedef char            INT8;
> 
> +
> 
> +//
> 
> +// Unsigned value of native width.  (4 bytes on supported 32-bit processor instructions,
> 
> +// 8 bytes on supported 64-bit processor instructions)
> 
> +//
> 
> +
> 
> +typedef UINT64 UINTN;
> 
> +
> 
> +//
> 
> +// Signed value of native width.  (4 bytes on supported 32-bit processor instructions,
> 
> +// 8 bytes on supported 64-bit processor instructions)
> 
> +//
> 
> +typedef INT64 INTN;
> 
> +
> 
> +//
> 
> +// Processor specific defines
> 
> +//
> 
> +
> 
> +//
> 
> +// A value of native width with the highest bit set.
> 
> +//
> 
> +#define MAX_BIT  0x8000000000000000ULL
> 
> +//
> 
> +// A value of native width with the two highest bits set.
> 
> +//
> 
> +#define MAX_2_BITS  0xC000000000000000ULL
> 
> +
> 
> +//
> 
> +// Maximum legal LoongArch 64-bit address
> 
> +//
> 
> +#define MAX_ADDRESS  0xFFFFFFFFFFFFFFFFULL
> 
> +
> 
> +//
> 
> +// Maximum usable address at boot time (48 bits using 4KB pages)
> 
> +//
> 
> +#define MAX_ALLOC_ADDRESS  0xFFFFFFFFFFFFULL
> 
> +
> 
> +//
> 
> +// Maximum legal LoongArch  64-bit INTN and UINTN values.
> 
> +//
> 
> +#define MAX_INTN   ((INTN)0x7FFFFFFFFFFFFFFFULL)
> 
> +#define MAX_UINTN  ((UINTN)0xFFFFFFFFFFFFFFFFULL)
> 
> +
> 
> +//
> 
> +// Page allocation granularity for LoongArch
> 
> +//
> 
> +#define DEFAULT_PAGE_ALLOCATION_GRANULARITY  (0x1000)
> 
> +#define RUNTIME_PAGE_ALLOCATION_GRANULARITY  (0x10000)
> 
> +
> 
> +#if defined (__GNUC__)
> 
> +//
> 
> +// For GNU assembly code, .global or .globl can declare global symbols.
> 
> +// Define this macro to unify the usage.
> 
> +//
> 
> +#define ASM_GLOBAL  .globl
> 
> +#endif
> 
> +
> 
> +//
> 
> +// The stack alignment required for LoongArch
> 
> +//
> 
> +#define CPU_STACK_ALIGNMENT  16
> 
> +
> 
> +/**
> 
> +  Return the pointer to the first instruction of a function given a function pointer.
> 
> +  On LOONGARCH CPU architectures, these two pointer values are the same,
> 
> +  so the implementation of this macro is very simple.
> 
> +
> 
> +  @param  FunctionPointer   A pointer to a function.
> 
> +
> 
> +  @return The pointer to the first instruction of a function given a function pointer.
> 
> +
> 
> +**/
> 
> +#define FUNCTION_ENTRY_POINT(FunctionPointer)  (VOID *)(UINTN)(FunctionPointer)
> 
> +
> 
> +#ifndef __USER_LABEL_PREFIX__
> 
> +#define __USER_LABEL_PREFIX__
> 
> +#endif
> 
> +
> 
> +#endif
> 
> diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec
> index f1ebf9e251..4c81cbd75a 100644
> --- a/MdePkg/MdePkg.dec
> +++ b/MdePkg/MdePkg.dec
> @@ -7,6 +7,7 @@
>  # Copyright (c) 2007 - 2022, Intel Corporation. All rights reserved.<BR>
> 
>  # Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
> 
>  # (C) Copyright 2016 - 2021 Hewlett Packard Enterprise Development LP<BR>
> 
> +# Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.<BR>
> 
>  #
> 
>  # SPDX-License-Identifier: BSD-2-Clause-Patent
> 
>  #
> 
> @@ -43,6 +44,9 @@
>  [Includes.RISCV64]
> 
>    Include/RiscV64
> 
> 
> 
> +[Includes.LOONGARCH64]
> 
> +  Include/LoongArch64
> 
> +
> 
>  [LibraryClasses]
> 
>    ##  @libraryclass  Provides most usb APIs to support the Hid requests defined in Usb Hid 1.1 spec
> 
>    #                  and the standard requests defined in Usb 1.1 spec.
> 
> diff --git a/MdePkg/MdePkg.dsc b/MdePkg/MdePkg.dsc
> index cc1ac196a9..493a13ec91 100644
> --- a/MdePkg/MdePkg.dsc
> +++ b/MdePkg/MdePkg.dsc
> @@ -4,6 +4,7 @@
>  # Copyright (c) 2007 - 2022, Intel Corporation. All rights reserved.<BR>
> 
>  # Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
> 
>  # (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> 
> +# Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.<BR>
> 
>  #
> 
>  #    SPDX-License-Identifier: BSD-2-Clause-Patent
> 
>  #
> 
> @@ -15,7 +16,7 @@
>    PLATFORM_VERSION               = 1.08
> 
>    DSC_SPECIFICATION              = 0x00010005
> 
>    OUTPUT_DIRECTORY               = Build/Mde
> 
> -  SUPPORTED_ARCHITECTURES        = IA32|X64|EBC|ARM|AARCH64|RISCV64
> 
> +  SUPPORTED_ARCHITECTURES        = IA32|X64|EBC|ARM|AARCH64|RISCV64|LOONGARCH64
> 
>    BUILD_TARGETS                  = DEBUG|RELEASE|NOOPT
> 
>    SKUID_IDENTIFIER               = DEFAULT
> 
> 
> 
> --
> 2.27.0
> 
> 
> 
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