编写一个UEFI下的diag 测试案例
时间: 2024-03-27 09:41:03 浏览: 64
以下是一个简单的UEFI下的diag测试案例:
```C
#include <Uefi.h>
#include <Library/UefiLib.h>
#include <Library/UefiBootServicesTableLib.h>
EFI_STATUS EFIAPI UefiMain(IN EFI_HANDLE ImageHandle, IN EFI_SYSTEM_TABLE *SystemTable)
{
EFI_STATUS Status;
UINTN MemorySize;
CHAR16 *MemorySizeStr;
// 获取系统内存大小
MemorySize = GetMemorySize();
// 将内存大小转换为字符串
MemorySizeStr = ConvertMemorySizeToStr(MemorySize);
// 输出测试结果
Print(L"The system memory size is %s.\n", MemorySizeStr);
return EFI_SUCCESS;
}
// 获取系统内存大小
UINTN GetMemorySize()
{
EFI_STATUS Status;
EFI_MEMORY_DESCRIPTOR *MemoryMap;
UINTN MemoryMapSize;
UINTN MapKey;
UINTN DescriptorSize;
UINT32 DescriptorVersion;
UINTN MemorySize = 0;
UINTN Index;
// 获取内存描述符列表
Status = gBS->GetMemoryMap(&MemoryMapSize, MemoryMap, &MapKey, &DescriptorSize, &DescriptorVersion);
if (Status == EFI_BUFFER_TOO_SMALL) {
MemoryMapSize += DescriptorSize;
Status = gBS->AllocatePool(EfiBootServicesData, MemoryMapSize, (VOID**)&MemoryMap);
if (EFI_ERROR(Status)) {
return 0;
}
Status = gBS->GetMemoryMap(&MemoryMapSize, MemoryMap, &MapKey, &DescriptorSize, &DescriptorVersion);
}
if (EFI_ERROR(Status)) {
return 0;
}
// 计算系统内存大小
for (Index = 0; Index < MemoryMapSize / DescriptorSize; Index++) {
EFI_MEMORY_DESCRIPTOR *Desc = (EFI_MEMORY_DESCRIPTOR*)((CHAR8*)MemoryMap + Index * DescriptorSize);
if (Desc->Type == EfiConventionalMemory) {
MemorySize += Desc->NumberOfPages * EFI_PAGE_SIZE;
}
}
// 释放内存描述符列表
gBS->FreePool(MemoryMap);
return MemorySize;
}
// 将内存大小转换为字符串
CHAR16* ConvertMemorySizeToStr(UINTN MemorySize)
{
static CHAR16 Buffer[32];
UINTN Size;
UINTN Index;
if (MemorySize == 0) {
return L"0";
}
for (Index = 0; MemorySize != 0 && Index < 32; Index++) {
Buffer[Index] = (CHAR16)('0' + (MemorySize % 10));
MemorySize /= 10;
}
Size = Index;
for (Index = 0; Index < Size / 2; Index++) {
CHAR16 Temp = Buffer[Index];
Buffer[Index] = Buffer[Size - Index - 1];
Buffer[Size - Index - 1] = Temp;
}
Buffer[Size] = '\0';
return Buffer;
}
```
该测试案例主要用于测试系统内存大小,具体实现的功能包括:
1. 获取系统内存大小。
2. 将内存大小转换为字符串。
3. 输出测试结果。
在UEFI下编写测试案例时,需要使用UEFI库和UEFI启动服务表等相关库和API。具体的测试案例实现可能会因应用场景和测试要求而有所不同,需要根据具体情况进行调整和修改。
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