笔记七（编写第一个UEFI程序）

搭建好uefi开发环境之后，在MyWorkspace文件夹中建立一个文件夹ExamplePkg; ,然后在ExamplePkg文件夹中创建HelloWorld文件夹，Include文件夹，ExamplePkg.dec文件，ExamplePkg.dsc文件，buildx86.bat文件（这个文件的文件名不重要，重要的是里面的批处理命令，）

.dec文件中内容为

[Defines]
  DEC_SPECIFICATION            = 0x00010006
  PACKAGE_NAME                   = ExamplePkg
  PACKAGE_GUID                    = A0D78D6-2CAF-414b-BD4D-B6762A894289
  PACKAGE_VERSION              = 1.01

[Includes]
  Include

[LibraryClasses]

.dsc文件中内容为

[Defines]
  PLATFORM_NAME                        = Example
  PLATFORM_GUID                        = 587CE499-6CBE-43cd-94E2-
  PLATFORM_VERSION                     = 1.01
  DSC_SPECIFICATION                    = 0x00010006
  OUTPUT_DIRECTORY                     = Build/Example
  SUPPORTED_ARCHITECTURES              = IA32|IPF|X64|EBC|ARM|AARCH64
  BUILD_TARGETS                        = DEBUG|RELEASE
  SKUID_IDENTIFIER                     = DEFAULT

[LibraryClasses]
  UefiApplicationEntryPoint|MdePkg/Library/UefiApplicationEntryPoint/UefiApplicationEntryPoint.inf
  UefiLib|MdePkg/Library/UefiLib/UefiLib.inf
  UefiBootServicesTableLib|MdePkg/Library/UefiBootServicesTableLib/UefiBootServicesTableLib.inf
  DebugLib|MdePkg/Library/UefiDebugLibStdErr/UefiDebugLibStdErr.inf
  BaseLib|MdePkg/Library/BaseLib/BaseLib.inf
  BaseMemoryLib|MdePkg/Library/BaseMemoryLib/BaseMemoryLib.inf
  DebugPrintErrorLevelLib|MdePkg/Library/BaseDebugPrintErrorLevelLib/BaseDebugPrintErrorLevelLib.inf
  MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
  DevicePathLib|MdePkg/Library/UefiDevicePathLib/UefiDevicePathLib.inf
  PrintLib|MdePkg/Library/BasePrintLib/BasePrintLib.inf
  PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
  UefiRuntimeServicesTableLib|MdePkg/Library/UefiRuntimeServicesTableLib/UefiRuntimeServicesTableLib.inf

[Components]
  ExamplePkg/HelloWorld/HelloWorld.inf

.bat文件中内容为

@call "C:\MyWorkSpace\edksetup.bat"
Build -t VS2008x86 -a IA32 -p ExamplePkg\ExamplePkg.dsc -m ExamplePkg\HelloWorld\HelloWorld.inf -b RELEASE
pause 

HelloWorld文件夹中要两个文件，HelloWorld.c  HelloWorld.inf

.c文件中内容为

#include <Uefi.h>
#include <Library/UefiLib.h>
#include <Library/UefiApplicationEntryPoint.h>

EFI_STATUS EFIAPI UefiMain(
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
)
{
 Print(L"HelloWorld_jyw");
 return EFI_SUCCESS;
}

.inf文件中内容为

[Defines]
 INF_VERSION              = 0x00010006
  BASE_NAME               = HelloWorld
  FILE_GUID                  = 6987936E-ED34-44db-AE97-1FA5E4ED2117
  MODULE_TYPE             = UEFI_APPLICATION
  VERSION_STRING          = 1.01
  ENTRY_POINT             = UefiMain

[Sources]
  HelloWorld.c

[Packages]
  MdePkg/MdePkg.dec
  ExamplePkg/ExamplePkg.dec

[LibraryClasses]
  UefiApplicationEntryPoint
  UefiLib

因为要做的事情很简单只是打印hellowold所以Include文件夹中不需要东西

其目录形式为：

ExamplePkg-->HelloWorld-->HelloWorld.c

ExamplePkg-->HelloWorld-->HelloWorld.inf

ExamplePkg-->Include

ExamplePkg-->buildx86.bat

ExamplePkg-->ExamplePkg.dec

ExamplePkg-->ExamplePkg.dsc

然后执行buildx86.bat

在MyWorkspace文件夹中的build文件夹中会发现一个名为Example文件夹，里面有RELEASE_VS2008x86文件夹，进去有 IA32文件夹，再进去有HelloWorld.efi文件，这便是编译生成的efi文件，其实会生成两个.efi文件，另一个在哪里可以在资源管理器中搜一下，

然后打开MyWorkSpace\Build\NT32IA32\DEBUG_VS2008x86\IA32\SecMain.exe，这是一个模拟环境回车一下，然后输入”fsnt0：“回车，再输入helloworld.efi(如果不想敲全名还可以敲 h    然后tab键)，然后回车就可以看到输出了。