diff options
Diffstat (limited to 'Lesson_12/UefiLessonsPkg/MemoryInfo/MemoryInfo.c')
| -rw-r--r-- | Lesson_12/UefiLessonsPkg/MemoryInfo/MemoryInfo.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/Lesson_12/UefiLessonsPkg/MemoryInfo/MemoryInfo.c b/Lesson_12/UefiLessonsPkg/MemoryInfo/MemoryInfo.c new file mode 100644 index 0000000..8c3bcf2 --- /dev/null +++ b/Lesson_12/UefiLessonsPkg/MemoryInfo/MemoryInfo.c @@ -0,0 +1,215 @@ +#include <Library/UefiBootServicesTableLib.h> +#include <Library/UefiLib.h> + +// for SetMem +#include <Library/BaseMemoryLib.h> + +#include <Protocol/ShellParameters.h> + +const CHAR16 *memory_types[] = { + L"EfiReservedMemoryType", + L"EfiLoaderCode", + L"EfiLoaderData", + L"EfiBootServicesCode", + L"EfiBootServicesData", + L"EfiRuntimeServicesCode", + L"EfiRuntimeServicesData", + L"EfiConventionalMemory", + L"EfiUnusableMemory", + L"EfiACPIReclaimMemory", + L"EfiACPIMemoryNVS", + L"EfiMemoryMappedIO", + L"EfiMemoryMappedIOPortSpace", + L"EfiPalCode", + L"EfiPersistentMemory", + L"EfiMaxMemoryType" +}; + + +const CHAR16 *memory_types_OS_view[] = { + L"reserved", // L"EfiReservedMemoryType", + L"usable", // L"EfiLoaderCode", + L"usable", // L"EfiLoaderData", + L"usable", // L"EfiBootServicesCode", + L"usable", // L"EfiBootServicesData", + L"reserved", // L"EfiRuntimeServicesCode", + L"reserved", // L"EfiRuntimeServicesData", + L"usable", // L"EfiConventionalMemory", + L"reserved", // L"EfiUnusableMemory", + L"ACPI data",// L"EfiACPIReclaimMemory", + L"ACPI NVS", // L"EfiACPIMemoryNVS", + L"reserved", // L"EfiMemoryMappedIO", + L"reserved", // L"EfiMemoryMappedIOPortSpace", + L"reserved", // L"EfiPalCode", + L"usable", // L"EfiPersistentMemory", + L"usable", // L"EfiMaxMemoryType" +}; + + +const CHAR16 * +memory_type_to_str(UINT32 type) +{ + if (type > sizeof(memory_types)/sizeof(CHAR16 *)) + return L"Unknown"; + + return memory_types[type]; +} + +const CHAR16 * +memory_type_to_str_OS_view(UINT32 type) +{ + if (type > sizeof(memory_types_OS_view)/sizeof(CHAR16 *)) + return L"Unknown"; + + return memory_types_OS_view[type]; +} + +#define ATTRIBUTE_STR_SIZE 50 + +#define CHECK_EFI_MEMORY_ATTRIBUTE(attr) if (attrs & EFI_MEMORY_##attr) { \ + StrCpyS(&str[i], ATTRIBUTE_STR_SIZE, L" "#attr); \ + i+=StrLen(L" "#attr); \ + } + +const CHAR16 * +memory_attrs_to_str(CHAR16* str, UINT64 attrs) +{ + int i=0; + SetMem((VOID *)str, sizeof(str), 0); + + CHECK_EFI_MEMORY_ATTRIBUTE(UC) + CHECK_EFI_MEMORY_ATTRIBUTE(WC) + CHECK_EFI_MEMORY_ATTRIBUTE(WT) + CHECK_EFI_MEMORY_ATTRIBUTE(WB) + CHECK_EFI_MEMORY_ATTRIBUTE(UCE) + CHECK_EFI_MEMORY_ATTRIBUTE(WP) + CHECK_EFI_MEMORY_ATTRIBUTE(RP) + CHECK_EFI_MEMORY_ATTRIBUTE(XP) + CHECK_EFI_MEMORY_ATTRIBUTE(NV) + CHECK_EFI_MEMORY_ATTRIBUTE(MORE_RELIABLE) + CHECK_EFI_MEMORY_ATTRIBUTE(RO) + CHECK_EFI_MEMORY_ATTRIBUTE(SP) + CHECK_EFI_MEMORY_ATTRIBUTE(CPU_CRYPTO) + CHECK_EFI_MEMORY_ATTRIBUTE(RUNTIME) + + return str; +} + +EFI_STATUS +EFIAPI +UefiMain ( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable + ) +{ + UINTN MemoryMapSize = 0; + EFI_MEMORY_DESCRIPTOR* MemoryMap = NULL; + UINTN MapKey; + UINTN DescriptorSize; + UINT32 DescriptorVersion; + + EFI_STATUS Status; + + + EFI_SHELL_PARAMETERS_PROTOCOL* ShellParameters; + + Status = gBS->HandleProtocol( + ImageHandle, + &gEfiShellParametersProtocolGuid, + (VOID **) &ShellParameters + ); + + BOOLEAN full=FALSE; + if (Status == EFI_SUCCESS) { + if (ShellParameters->Argc == 2) { + if (!StrCmp(ShellParameters->Argv[1], L"full")) { + full=TRUE; + } + } + } + + + Status = gBS->GetMemoryMap( + &MemoryMapSize, + MemoryMap, + &MapKey, + &DescriptorSize, + &DescriptorVersion + ); + + if (Status == EFI_BUFFER_TOO_SMALL) { + Status = gBS->AllocatePool( + EfiBootServicesData, + MemoryMapSize, + (void**)&MemoryMap + ); + + if (EFI_ERROR(Status)) { + Print(L"AllocatePool error: %r\n", Status); + return Status; + } + + Status = gBS->GetMemoryMap( + &MemoryMapSize, + MemoryMap, + &MapKey, + &DescriptorSize, + &DescriptorVersion + ); + + if (!EFI_ERROR(Status)) + { + EFI_MEMORY_DESCRIPTOR* desc = MemoryMap; + EFI_MEMORY_DESCRIPTOR* next_desc; + int i = 0; + while ((UINT8 *)desc < (UINT8 *)MemoryMap + MemoryMapSize) { + UINTN PAGE_SIZE = 4096; + UINTN mapping_size =(UINTN) desc->NumberOfPages * PAGE_SIZE; + + UINT64 Start = desc->PhysicalStart; + + next_desc = (EFI_MEMORY_DESCRIPTOR *)((UINT8 *)desc + DescriptorSize); + if (!full) { + while ((UINT8 *)next_desc < (UINT8 *)MemoryMap + MemoryMapSize) { + mapping_size =(UINTN) desc->NumberOfPages * PAGE_SIZE; + if ((desc->PhysicalStart + mapping_size) == (next_desc->PhysicalStart)) { + + if (desc->Type != next_desc->Type) { + if (StrCmp(memory_type_to_str_OS_view(desc->Type), + memory_type_to_str_OS_view(next_desc->Type))) + break; + } + + desc=next_desc; + next_desc = (EFI_MEMORY_DESCRIPTOR *)((UINT8 *)next_desc + DescriptorSize); + } else { + break; + } + } + } + + if (full) { + CHAR16 str[ATTRIBUTE_STR_SIZE]; + Print(L"[#%02d] Type: %s Attr: %s\n", i++, + memory_type_to_str(desc->Type), memory_attrs_to_str(str, desc->Attribute)); + Print(L" Phys: %016llx-%016llx\n", Start, Start + mapping_size - 1); + } + else { + Print(L" [mem: %016llx-%016llx] %s\n", Start, desc->PhysicalStart + mapping_size - 1, + memory_type_to_str_OS_view(desc->Type) ); + } + + desc = next_desc; + } + + gBS->FreePool(MemoryMap); + } else { + Print(L"GetMemoryMap with buffer error: %r\n", Status); + } + } else { + Print(L"GetMemoryMap without buffer error: %r\n", Status); + } + + return Status; +} + |