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/*
* Copyright (c) 2021, Konstantin Aladyshev <aladyshev22@gmail.com>
*
* SPDX-License-Identifier: MIT
*/
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiLib.h>
// for SetMem
#include <Library/BaseMemoryLib.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_type_to_str(UINT32 type)
{
if (type > sizeof(memory_types)/sizeof(CHAR16 *))
return L"Unknown";
return memory_types[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;
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;
int i = 0;
while ((UINT8 *)desc < (UINT8 *)MemoryMap + MemoryMapSize) {
UINTN PAGE_SIZE = 4096;
UINTN mapping_size =(UINTN) desc->NumberOfPages * PAGE_SIZE;
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", desc->PhysicalStart, desc->PhysicalStart + mapping_size - 1);
desc = (EFI_MEMORY_DESCRIPTOR *)((UINT8 *)desc + DescriptorSize);
}
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;
}
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