diff options
Diffstat (limited to 'Lesson_28')
| -rw-r--r-- | Lesson_28/README.md | 551 | ||||
| -rw-r--r-- | Lesson_28/UefiLessonsPkg/AcpiInfo/AcpiInfo.c | 106 | ||||
| -rw-r--r-- | Lesson_28/UefiLessonsPkg/AcpiInfo/AcpiInfo.inf | 24 |
3 files changed, 0 insertions, 681 deletions
diff --git a/Lesson_28/README.md b/Lesson_28/README.md deleted file mode 100644 index 3927045..0000000 --- a/Lesson_28/README.md +++ /dev/null @@ -1,551 +0,0 @@ -The latest ACPI specification can be found under UEFI specifications page https://uefi.org/specifications - -The current latest specification is "ACPI Specification Version 6.4 (released January 2021)" (https://uefi.org/specs/ACPI/6.4/) - - -Use the same tactic we used for SMBIOS tables to print ACPI entry point table address: -``` -#include <Library/UefiBootServicesTableLib.h> -#include <Library/UefiLib.h> - -#include <Library/BaseMemoryLib.h> - -EFI_STATUS -EFIAPI -UefiMain ( - IN EFI_HANDLE ImageHandle, - IN EFI_SYSTEM_TABLE *SystemTable - ) -{ - for (UINTN i=0; i<SystemTable->NumberOfTableEntries; i++) { - if (CompareGuid(&(SystemTable->ConfigurationTable[i].VendorGuid), &gEfiAcpi20TableGuid)) { - Print(L"ACPI table is placed at %p\n\n", SystemTable->ConfigurationTable[i].VendorTable); - } - } - return EFI_SUCCESS; -} -``` - -Use `dmem` to peak inside ACPI table memory: -``` -FS0:\> AcpiInfo.efi -ACPI table is placed at 7B7E014 - -FS0:\> dmem 7B7E014 30 -Memory Address 0000000007B7E014 30 Bytes - 07B7E014: 52 53 44 20 50 54 52 20-4E 42 4F 43 48 53 20 02 *RSD PTR NBOCHS .* - 07B7E024: 74 D0 B7 07 24 00 00 00-E8 D0 B7 07 00 00 00 00 *t...$...........* - 07B7E034: 66 00 00 00 AF AF AF AF-AF AF AF AF AF AF AF AF *f...............* -FS0:\> -``` - -The signature `RSP PTR` stands for `Root System Description Pointer (RSDP) Structure` (https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#root-system-description-pointer-rsdp-structure). - -It contains addresses for `RSDT` and `XSDT` tables. If you calculate offsets, you'll get these addresses from our memory dump: -``` -XSDT=0x07B7D0E8 -RSDT=0x07B7D074 -``` -These tables in turn would cointain pointers to other ACPI tables that actualy contain data useful to OS. - -According to the spec "platforms provide the RSDT to enable compatibility with ACPI 1.0 operating systems. The XSDT supersedes RSDT functionality". So if you peak these addresses with `dmem`, table contents would be pretty much the same except table signatures. Therefore in our app code we would be parsing XSDT table data. - -Ok, it's time to write some code. ACPI structures are defined in the following header files: -``` -$ ls -1 MdePkg/Include/IndustryStandard/Acpi* -MdePkg/Include/IndustryStandard/Acpi.h -MdePkg/Include/IndustryStandard/Acpi10.h -MdePkg/Include/IndustryStandard/Acpi20.h -MdePkg/Include/IndustryStandard/Acpi30.h -MdePkg/Include/IndustryStandard/Acpi40.h -MdePkg/Include/IndustryStandard/Acpi50.h -MdePkg/Include/IndustryStandard/Acpi51.h -MdePkg/Include/IndustryStandard/Acpi60.h -MdePkg/Include/IndustryStandard/Acpi61.h -MdePkg/Include/IndustryStandard/Acpi62.h -MdePkg/Include/IndustryStandard/Acpi63.h -MdePkg/Include/IndustryStandard/AcpiAml.h -``` - -Keep in mind that headers for latter standards include headers for earlier standards in itself. -``` -Acpi.h > Acpi63.h > Acpi62.h > ... > Acpi10.h > AcpiAml.h -``` - -Let's look at RSDP structure definition at the most latest ACPI standard header file -https://github.com/tianocore/edk2/blob/master/MdePkg/Include/IndustryStandard/Acpi63.h -``` -/// -/// Root System Description Pointer Structure -/// -typedef struct { - UINT64 Signature; - UINT8 Checksum; - UINT8 OemId[6]; - UINT8 Revision; - UINT32 RsdtAddress; - UINT32 Length; - UINT64 XsdtAddress; - UINT8 ExtendedChecksum; - UINT8 Reserved[3]; -} EFI_ACPI_6_3_ROOT_SYSTEM_DESCRIPTION_POINTER; -``` - -We can use it to print addresses of RSDT/XSDT tables. -``` -EFI_ACPI_6_3_ROOT_SYSTEM_DESCRIPTION_POINTER* RSDP = NULL; - -for (UINTN i=0; i<SystemTable->NumberOfTableEntries; i++) { - if (CompareGuid(&(SystemTable->ConfigurationTable[i].VendorGuid), &gEfiAcpi20TableGuid)) { - Print(L"RSDP table is placed at %p\n\n", SystemTable->ConfigurationTable[i].VendorTable); - RSDP = SystemTable->ConfigurationTable[i].VendorTable; - } -} - -if (!RSDP) { - Print(L"No ACPI2.0 table was found in the system\n"); - return EFI_SUCCESS; -} - -if (((CHAR8)((RSDP->Signature >> 0) & 0xFF) != 'R') || - ((CHAR8)((RSDP->Signature >> 8) & 0xFF) != 'S') || - ((CHAR8)((RSDP->Signature >> 16) & 0xFF) != 'D') || - ((CHAR8)((RSDP->Signature >> 24) & 0xFF) != ' ') || - ((CHAR8)((RSDP->Signature >> 32) & 0xFF) != 'P') || - ((CHAR8)((RSDP->Signature >> 40) & 0xFF) != 'T') || - ((CHAR8)((RSDP->Signature >> 48) & 0xFF) != 'R') || - ((CHAR8)((RSDP->Signature >> 56) & 0xFF) != ' ')) { - Print(L"Error! RSDP signature is not valid!\n"); - return EFI_SUCCESS; -} - -Print(L"System description tables:\n"); -Print(L"\tRSDT table is placed at address %p\n", RSDP->RsdtAddress); -Print(L"\tXSDT table is placed at address %p\n", RSDP->XsdtAddress); -Print(L"\n"); -``` - -In the same file (https://github.com/tianocore/edk2/blob/master/MdePkg/Include/IndustryStandard/Acpi63.h) you can find description for XSDT structure: -``` -// -// Extended System Description Table -// No definition needed as it is a common description table header, the same with -// EFI_ACPI_DESCRIPTION_HEADER, followed by a variable number of UINT64 table pointers. -// -``` - -The definition for `EFI_ACPI_DESCRIPTION_HEADER` can be found here https://github.com/tianocore/edk2/blob/master/MdePkg/Include/IndustryStandard/Acpi10.h: -``` -#pragma pack(1) -/// -/// The common ACPI description table header. This structure prefaces most ACPI tables. -/// -typedef struct { - UINT32 Signature; - UINT32 Length; - UINT8 Revision; - UINT8 Checksum; - UINT8 OemId[6]; - UINT64 OemTableId; - UINT32 OemRevision; - UINT32 CreatorId; - UINT32 CreatorRevision; -} EFI_ACPI_DESCRIPTION_HEADER; -#pragma pack() -``` - -Let's check information about other ACPI tables that are present in the system: -``` -EFI_ACPI_DESCRIPTION_HEADER* XSDT = (EFI_ACPI_DESCRIPTION_HEADER*)RSDP->XsdtAddress; -if (((CHAR8)((XSDT->Signature >> 0) & 0xFF) != 'X') || - ((CHAR8)((XSDT->Signature >> 8) & 0xFF) != 'S') || - ((CHAR8)((XSDT->Signature >> 16) & 0xFF) != 'D') || - ((CHAR8)((XSDT->Signature >> 24) & 0xFF) != 'T')) { - Print(L"Error! XSDT signature is not valid!\n"); - return EFI_SUCCESS; -} - -Print(L"Main ACPI tables:\n"); -UINT64 offset = sizeof(EFI_ACPI_DESCRIPTION_HEADER); -while (offset < XSDT->Length) { - UINT64* table_address = (UINT64*)((UINT8*)XSDT + offset); - EFI_ACPI_6_3_COMMON_HEADER* table = (EFI_ACPI_6_3_COMMON_HEADER*)(*table_address); - TableName[0] = (CHAR16)((table->Signature>> 0)&0xFF); - TableName[1] = (CHAR16)((table->Signature>> 8)&0xFF); - TableName[2] = (CHAR16)((table->Signature>>16)&0xFF); - TableName[3] = (CHAR16)((table->Signature>>24)&0xFF); - TableName[4] = 0; - - Print(L"\t%s table is placed at address %p with length 0x%x\n", - TableName, - table, - table->Length); - offset += sizeof(UINT64); -} -``` - -If you build our app and execute it under OVMF now you would get: -``` -FS0:\> AcpiInfo.efi -RSDP table is placed at 7B7E014 - -System description tables: - RSDT table is placed at address 7B7D074 - XSDT table is placed at address 7B7D0E8 - -Main ACPI tables: - FACP table is placed at address 7B7A000 with length 0x74 - APIC table is placed at address 7B79000 with length 0x78 - HPET table is placed at address 7B78000 with length 0x38 - BGRT table is placed at address 7B77000 with length 0x38 -``` - -Pretty neat, our system has 4 ACPI data tables: -- Fixed ACPI Description Table (`FACP`) - https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#fixed-acpi-description-table-fadt -- Multiple APIC Description Table (`MADT`) - https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#multiple-apic-description-table-madt -- IA-PC High Precision Event Timer Table (`HPET`) - http://www.intel.com/content/dam/www/public/us/en/documents/technical-specifications/software-developers-hpet-spec-1-0a.pdf - This one is not present in ACPI spec, but in a separate document from the page https://uefi.org/acpi -- Boot Graphics Resource Table (`BGRT`) - https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#boot-graphics-resource-table-bgrt - - -Keep in mind that as with SMBIOS tables we could use a protocol to get the same data. `GetAcpiTable()` function of a `EFI_ACPI_SDT_PROTOCOL` can help to get the same information. This protocol also is defined by UEFI PI specification. - -In edk2 it is defined under https://github.com/tianocore/edk2/blob/master/MdePkg/Include/Protocol/AcpiSystemDescriptionTable.h - -# Use `EFI_SHELL_PROTOCOL` to save table data - -Now let's try to save ACPI tables from memory to files. - -To do this we can utilize `EFI_SHELL_PROTOCOL` that is defined in UEFI Shell specification (https://uefi.org/sites/default/files/resources/UEFI_Shell_2_2.pdf). It has many functions for File I/O. - -The necessary header in edk2 is https://github.com/tianocore/edk2/blob/master/MdePkg/Include/Protocol/Shell.h -``` -typedef struct _EFI_SHELL_PROTOCOL { - EFI_SHELL_EXECUTE Execute; - EFI_SHELL_GET_ENV GetEnv; - EFI_SHELL_SET_ENV SetEnv; - EFI_SHELL_GET_ALIAS GetAlias; - EFI_SHELL_SET_ALIAS SetAlias; - EFI_SHELL_GET_HELP_TEXT GetHelpText; - EFI_SHELL_GET_DEVICE_PATH_FROM_MAP GetDevicePathFromMap; - EFI_SHELL_GET_MAP_FROM_DEVICE_PATH GetMapFromDevicePath; - EFI_SHELL_GET_DEVICE_PATH_FROM_FILE_PATH GetDevicePathFromFilePath; - EFI_SHELL_GET_FILE_PATH_FROM_DEVICE_PATH GetFilePathFromDevicePath; - EFI_SHELL_SET_MAP SetMap; - EFI_SHELL_GET_CUR_DIR GetCurDir; - EFI_SHELL_SET_CUR_DIR SetCurDir; - EFI_SHELL_OPEN_FILE_LIST OpenFileList; - EFI_SHELL_FREE_FILE_LIST FreeFileList; - EFI_SHELL_REMOVE_DUP_IN_FILE_LIST RemoveDupInFileList; - EFI_SHELL_BATCH_IS_ACTIVE BatchIsActive; - EFI_SHELL_IS_ROOT_SHELL IsRootShell; - EFI_SHELL_ENABLE_PAGE_BREAK EnablePageBreak; - EFI_SHELL_DISABLE_PAGE_BREAK DisablePageBreak; - EFI_SHELL_GET_PAGE_BREAK GetPageBreak; - EFI_SHELL_GET_DEVICE_NAME GetDeviceName; - EFI_SHELL_GET_FILE_INFO GetFileInfo; - EFI_SHELL_SET_FILE_INFO SetFileInfo; - EFI_SHELL_OPEN_FILE_BY_NAME OpenFileByName; - EFI_SHELL_CLOSE_FILE CloseFile; - EFI_SHELL_CREATE_FILE CreateFile; - EFI_SHELL_READ_FILE ReadFile; - EFI_SHELL_WRITE_FILE WriteFile; - EFI_SHELL_DELETE_FILE DeleteFile; - EFI_SHELL_DELETE_FILE_BY_NAME DeleteFileByName; - EFI_SHELL_GET_FILE_POSITION GetFilePosition; - EFI_SHELL_SET_FILE_POSITION SetFilePosition; - EFI_SHELL_FLUSH_FILE FlushFile; - EFI_SHELL_FIND_FILES FindFiles; - EFI_SHELL_FIND_FILES_IN_DIR FindFilesInDir; - EFI_SHELL_GET_FILE_SIZE GetFileSize; - EFI_SHELL_OPEN_ROOT OpenRoot; - EFI_SHELL_OPEN_ROOT_BY_HANDLE OpenRootByHandle; - EFI_EVENT ExecutionBreak; - UINT32 MajorVersion; - UINT32 MinorVersion; - // Added for Shell 2.1 - EFI_SHELL_REGISTER_GUID_NAME RegisterGuidName; - EFI_SHELL_GET_GUID_NAME GetGuidName; - EFI_SHELL_GET_GUID_FROM_NAME GetGuidFromName; - EFI_SHELL_GET_ENV_EX GetEnvEx; -} EFI_SHELL_PROTOCOL; -``` - -We will use 3 functions from this protocol `OpenFileByName`/`WriteFile`/`CloseFile`: -``` -EFI_SHELL_PROTOCOL.OpenFileByName() - -Summary: -Opens a file or a directory by file name. - -Prototype: -typdef -EFI_STATUS -(EFIAPI *EFI_SHELL_OPEN_FILE_BY_NAME) ( - IN CONST CHAR16 *FileName, - OUT SHELL_FILE_HANDLE *FileHandle, - IN UINT64 OpenMode - ); - -Parameters: -FileName Points to the null-terminated UCS-2 encoded file name. -FileHandle On return, points to the file handle. -OpenMode File open mode. - -Description: -This function opens the specified file in the specified OpenMode and returns a file handle. -``` -``` -EFI_SHELL_PROTOCOL.WriteFile() - -Summary: -Writes data to the file. - -Prototype: -typedef -EFI_STATUS -(EFIAPI EFI_SHELL_WRITE_FILE)( - IN SHELL_FILE_HANDLE FileHandle, - IN OUT UINTN *BufferSize, - OUT VOID *Buffer - ); - -Parameters: -FileHandle The opened file handle for writing. -BufferSize On input, size of Buffer. -Buffer The buffer in which data to write. - -Description: -This function writes the specified number of bytes to the file at the current file position. The current file position is advanced the actual number of bytes -written, which is returned in BufferSize. Partial writes only occur when there has been a data error during the write attempt (such as “volume space full”). -The file automatically grows to hold the data, if required. -``` -``` -EFI_SHELL_PROTOCOL.CloseFile() - -Summary: -Closes the file handle. - -Prototype: -typedef -EFI_STATUS -(EFIAPI *EFI_SHELL_CLOSE_FILE)( - IN SHELL_FILE_HANDLE FileHandle - ); - -Parameters: -FileHandle The file handle to be closed -Description This function closes a specified file handle. All “dirty” cached file data is flushed - to the device, and the file is closed. In all cases, the handle is closed. - -``` - -Now let's start coding. Add necessary include to our *.c file: -``` -#include <Protocol/Shell.h> -``` -And necessary protocol guid to our *.inf file: -``` -[Protocols] - gEfiShellProtocolGuid -``` - -In our program we need to acquire `EFI_SHELL_PROTOCOL`, this can be done via `LocateProtocol` function from the BootServices: -``` -EFI_SHELL_PROTOCOL* ShellProtocol; -EFI_STATUS Status = gBS->LocateProtocol( - &gEfiShellProtocolGuid, - NULL, - (VOID **)&ShellProtocol -); - -if (EFI_ERROR(Status)) { - Print(L"Can't open EFI_SHELL_PROTOCOL: %r\n", Status); - return EFI_SUCCESS; -} -``` - -Then use `EFI_SHELL_PROTOCOL` functions in our while loop to create files with ACPI table data. For every table we will create a file "<signature>.aml". We use `.aml` extension for our files because in ACPI language source files usually have *.asl/*.dsl extension (ACPI Source Language), and compiled files have *.aml extension (ACPI Machine Language): -``` -CHAR16 FileName[9] = {0}; -StrCpyS(FileName, 9, TableName); -StrCatS(FileName, 9, L".aml"); -Print(L"%s\n", FileName); -SHELL_FILE_HANDLE FileHandle; -Status = ShellProtocol->OpenFileByName(FileName, - &FileHandle, - EFI_FILE_MODE_CREATE | EFI_FILE_MODE_WRITE | EFI_FILE_MODE_READ); - -if (!EFI_ERROR(Status)) { - UINTN size = table->Length; - Status = ShellProtocol->WriteFile(FileHandle, &size, (VOID*)table); - if (EFI_ERROR(Status)) { - Print(L"Error in WriteFile: %r\n", Status); - } - Status = ShellProtocol->CloseFile(FileHandle); - if (EFI_ERROR(Status)) { - Print(L"Error in CloseFile: %r\n", Status); - } -} else { - Print(L"Error in OpenFileByName: %r\n", Status); -} -``` - -To create a string with a file name we use `StrCatS` and `StrCpyS` functions. They are safe versions of string concatention/string copy functions similar to their C++ analogs `strcat_s`/`strcpy_s`. You can check out them in a library https://github.com/tianocore/edk2/blob/master/MdePkg/Library/BaseLib/SafeString.c - -With a help of `EFI_SHELL_PROTOCOL` file operation functions writing data to a file is pretty similar to standard system programming. We open handle, write data to it, and finally close handle. - -If you build our app and execute it under OVMF you would get 4 files in our `UEFI_disk` shared folder: -``` -$ ls -1 ~/UEFI_disk/*.aml -/home/kostr/UEFI_disk/apic.aml -/home/kostr/UEFI_disk/bgrt.aml -/home/kostr/UEFI_disk/facp.aml -/home/kostr/UEFI_disk/hpet.aml -``` - -You can use `iasl` compiler to disassemle ACPI table data: -``` -$ iasl -d ~/UEFI_disk/*.aml - -Intel ACPI Component Architecture -ASL+ Optimizing Compiler/Disassembler version 20190509 -Copyright (c) 2000 - 2019 Intel Corporation - -File appears to be binary: found 81 non-ASCII characters, disassembling -Binary file appears to be a valid ACPI table, disassembling -Input file /home/kostr/UEFI_disk/apic.aml, Length 0x78 (120) bytes -ACPI: APIC 0x0000000000000000 000078 (v01 BOCHS BXPCAPIC 00000001 BXPC 00000001) -Acpi Data Table [APIC] decoded -Formatted output: /home/kostr/UEFI_disk/apic.dsl - 4935 bytes -File appears to be binary: found 32 non-ASCII characters, disassembling -Binary file appears to be a valid ACPI table, disassembling -Input file /home/kostr/UEFI_disk/bgrt.aml, Length 0x38 (56) bytes -ACPI: BGRT 0x0000000000000000 000038 (v01 INTEL EDK2 00000002 01000013) -Acpi Data Table [BGRT] decoded -Formatted output: /home/kostr/UEFI_disk/bgrt.dsl - 1628 bytes -File appears to be binary: found 91 non-ASCII characters, disassembling -Binary file appears to be a valid ACPI table, disassembling -Input file /home/kostr/UEFI_disk/facp.aml, Length 0x74 (116) bytes -ACPI: FACP 0x0000000000000000 000074 (v01 BOCHS BXPCFACP 00000001 BXPC 00000001) -Acpi Data Table [FACP] decoded -Formatted output: /home/kostr/UEFI_disk/facp.dsl - 4892 bytes -File appears to be binary: found 33 non-ASCII characters, disassembling -Binary file appears to be a valid ACPI table, disassembling -Input file /home/kostr/UEFI_disk/hpet.aml, Length 0x38 (56) bytes -ACPI: HPET 0x0000000000000000 000038 (v01 BOCHS BXPCHPET 00000001 BXPC 00000001) -Acpi Data Table [HPET] decoded -Formatted output: /home/kostr/UEFI_disk/hpet.dsl - 1887 bytes -``` - -Now you have *.dsl files in the same `UEFI_disk` shared folder. - -For example here is a content for `APIC` table: -``` -$ cat ~/UEFI_disk/apic.dsl -/* - * Intel ACPI Component Architecture - * AML/ASL+ Disassembler version 20190509 (64-bit version) - * Copyright (c) 2000 - 2019 Intel Corporation - * - * Disassembly of /home/kostr/UEFI_disk/apic.aml, Sat Jul 3 00:09:16 2021 - * - * ACPI Data Table [APIC] - * - * Format: [HexOffset DecimalOffset ByteLength] FieldName : FieldValue - */ - -[000h 0000 4] Signature : "APIC" [Multiple APIC Description Table (MADT)] -[004h 0004 4] Table Length : 00000078 -[008h 0008 1] Revision : 01 -[009h 0009 1] Checksum : ED -[00Ah 0010 6] Oem ID : "BOCHS " -[010h 0016 8] Oem Table ID : "BXPCAPIC" -[018h 0024 4] Oem Revision : 00000001 -[01Ch 0028 4] Asl Compiler ID : "BXPC" -[020h 0032 4] Asl Compiler Revision : 00000001 - -[024h 0036 4] Local Apic Address : FEE00000 -[028h 0040 4] Flags (decoded below) : 00000001 - PC-AT Compatibility : 1 - -[02Ch 0044 1] Subtable Type : 00 [Processor Local APIC] -[02Dh 0045 1] Length : 08 -[02Eh 0046 1] Processor ID : 00 -[02Fh 0047 1] Local Apic ID : 00 -[030h 0048 4] Flags (decoded below) : 00000001 - Processor Enabled : 1 - Runtime Online Capable : 0 - -[034h 0052 1] Subtable Type : 01 [I/O APIC] -[035h 0053 1] Length : 0C -[036h 0054 1] I/O Apic ID : 00 -[037h 0055 1] Reserved : 00 -[038h 0056 4] Address : FEC00000 -[03Ch 0060 4] Interrupt : 00000000 - -[040h 0064 1] Subtable Type : 02 [Interrupt Source Override] -[041h 0065 1] Length : 0A -[042h 0066 1] Bus : 00 -[043h 0067 1] Source : 00 -[044h 0068 4] Interrupt : 00000002 -[048h 0072 2] Flags (decoded below) : 0000 - Polarity : 0 - Trigger Mode : 0 - -[04Ah 0074 1] Subtable Type : 02 [Interrupt Source Override] -[04Bh 0075 1] Length : 0A -[04Ch 0076 1] Bus : 00 -[04Dh 0077 1] Source : 05 -[04Eh 0078 4] Interrupt : 00000005 -[052h 0082 2] Flags (decoded below) : 000D - Polarity : 1 - Trigger Mode : 3 - -[054h 0084 1] Subtable Type : 02 [Interrupt Source Override] -[055h 0085 1] Length : 0A -[056h 0086 1] Bus : 00 -[057h 0087 1] Source : 09 -[058h 0088 4] Interrupt : 00000009 -[05Ch 0092 2] Flags (decoded below) : 000D - Polarity : 1 - Trigger Mode : 3 - -[05Eh 0094 1] Subtable Type : 02 [Interrupt Source Override] -[05Fh 0095 1] Length : 0A -[060h 0096 1] Bus : 00 -[061h 0097 1] Source : 0A -[062h 0098 4] Interrupt : 0000000A -[066h 0102 2] Flags (decoded below) : 000D - Polarity : 1 - Trigger Mode : 3 - -[068h 0104 1] Subtable Type : 02 [Interrupt Source Override] -[069h 0105 1] Length : 0A -[06Ah 0106 1] Bus : 00 -[06Bh 0107 1] Source : 0B -[06Ch 0108 4] Interrupt : 0000000B -[070h 0112 2] Flags (decoded below) : 000D - Polarity : 1 - Trigger Mode : 3 - -[072h 0114 1] Subtable Type : 04 [Local APIC NMI] -[073h 0115 1] Length : 06 -[074h 0116 1] Processor ID : FF -[075h 0117 2] Flags (decoded below) : 0000 - Polarity : 0 - Trigger Mode : 0 -[077h 0119 1] Interrupt Input LINT : 01 - -Raw Table Data: Length 120 (0x78) - - 0000: 41 50 49 43 78 00 00 00 01 ED 42 4F 43 48 53 20 // APICx.....BOCHS - 0010: 42 58 50 43 41 50 49 43 01 00 00 00 42 58 50 43 // BXPCAPIC....BXPC - 0020: 01 00 00 00 00 00 E0 FE 01 00 00 00 00 08 00 00 // ................ - 0030: 01 00 00 00 01 0C 00 00 00 00 C0 FE 00 00 00 00 // ................ - 0040: 02 0A 00 00 02 00 00 00 00 00 02 0A 00 05 05 00 // ................ - 0050: 00 00 0D 00 02 0A 00 09 09 00 00 00 0D 00 02 0A // ................ - 0060: 00 0A 0A 00 00 00 0D 00 02 0A 00 0B 0B 00 00 00 // ................ - 0070: 0D 00 04 06 FF 00 00 01 // ........ -``` - - diff --git a/Lesson_28/UefiLessonsPkg/AcpiInfo/AcpiInfo.c b/Lesson_28/UefiLessonsPkg/AcpiInfo/AcpiInfo.c deleted file mode 100644 index 0511f59..0000000 --- a/Lesson_28/UefiLessonsPkg/AcpiInfo/AcpiInfo.c +++ /dev/null @@ -1,106 +0,0 @@ -#include <Library/UefiBootServicesTableLib.h> -#include <Library/UefiLib.h> - -#include <Library/BaseMemoryLib.h> -#include <Protocol/Shell.h> - -EFI_STATUS -EFIAPI -UefiMain ( - IN EFI_HANDLE ImageHandle, - IN EFI_SYSTEM_TABLE *SystemTable - ) -{ - EFI_SHELL_PROTOCOL* ShellProtocol; - EFI_STATUS Status = gBS->LocateProtocol( - &gEfiShellProtocolGuid, - NULL, - (VOID **)&ShellProtocol - ); - - if (EFI_ERROR(Status)) { - Print(L"Can't open EFI_SHELL_PROTOCOL: %r\n", Status); - return EFI_SUCCESS; - } - - EFI_ACPI_6_3_ROOT_SYSTEM_DESCRIPTION_POINTER* RSDP = NULL; - - for (UINTN i=0; i<SystemTable->NumberOfTableEntries; i++) { - if (CompareGuid(&(SystemTable->ConfigurationTable[i].VendorGuid), &gEfiAcpi20TableGuid)) { - Print(L"RSDP table is placed at %p\n\n", SystemTable->ConfigurationTable[i].VendorTable); - RSDP = SystemTable->ConfigurationTable[i].VendorTable; - } - } - - if (!RSDP) { - Print(L"No ACPI2.0 table was found in the system\n"); - return EFI_SUCCESS; - } - - if (((CHAR8)((RSDP->Signature >> 0) & 0xFF) != 'R') || - ((CHAR8)((RSDP->Signature >> 8) & 0xFF) != 'S') || - ((CHAR8)((RSDP->Signature >> 16) & 0xFF) != 'D') || - ((CHAR8)((RSDP->Signature >> 24) & 0xFF) != ' ') || - ((CHAR8)((RSDP->Signature >> 32) & 0xFF) != 'P') || - ((CHAR8)((RSDP->Signature >> 40) & 0xFF) != 'T') || - ((CHAR8)((RSDP->Signature >> 48) & 0xFF) != 'R') || - ((CHAR8)((RSDP->Signature >> 56) & 0xFF) != ' ')) { - Print(L"Error! RSDP signature is not valid!\n"); - return EFI_SUCCESS; - } - - Print(L"System description tables:\n"); - Print(L"\tRSDT table is placed at address %p\n", RSDP->RsdtAddress); - Print(L"\tXSDT table is placed at address %p\n", RSDP->XsdtAddress); - Print(L"\n"); - - EFI_ACPI_DESCRIPTION_HEADER* XSDT = (EFI_ACPI_DESCRIPTION_HEADER*)RSDP->XsdtAddress; - if (((CHAR8)((XSDT->Signature >> 0) & 0xFF) != 'X') || - ((CHAR8)((XSDT->Signature >> 8) & 0xFF) != 'S') || - ((CHAR8)((XSDT->Signature >> 16) & 0xFF) != 'D') || - ((CHAR8)((XSDT->Signature >> 24) & 0xFF) != 'T')) { - Print(L"Error! XSDT signature is not valid!\n"); - return EFI_SUCCESS; - } - - Print(L"Main ACPI tables:\n"); - UINT64 offset = sizeof(EFI_ACPI_DESCRIPTION_HEADER); - while (offset < XSDT->Length) { - UINT64* table_address = (UINT64*)((UINT8*)XSDT + offset); - EFI_ACPI_6_3_COMMON_HEADER* table = (EFI_ACPI_6_3_COMMON_HEADER*)(*table_address); - CHAR16 TableName[5]; - TableName[0] = (CHAR16)((table->Signature>> 0)&0xFF); - TableName[1] = (CHAR16)((table->Signature>> 8)&0xFF); - TableName[2] = (CHAR16)((table->Signature>>16)&0xFF); - TableName[3] = (CHAR16)((table->Signature>>24)&0xFF); - TableName[4] = 0; - - Print(L"\t%s table is placed at address %p with length 0x%x\n", - TableName, - table, - table->Length); - CHAR16 FileName[9] = {0}; - StrCpyS(FileName, 9, TableName); - StrCatS(FileName, 9, L".aml"); - SHELL_FILE_HANDLE FileHandle; - Status = ShellProtocol->OpenFileByName(FileName, - &FileHandle, - EFI_FILE_MODE_CREATE | EFI_FILE_MODE_WRITE | EFI_FILE_MODE_READ); - if (!EFI_ERROR(Status)) { - UINTN size = table->Length; - Status = ShellProtocol->WriteFile(FileHandle, &size, (VOID*)table); - if (EFI_ERROR(Status)) { - Print(L"Error in WriteFile: %r\n", Status); - } - Status = ShellProtocol->CloseFile(FileHandle); - if (EFI_ERROR(Status)) { - Print(L"Error in CloseFile: %r\n", Status); - } - } else { - Print(L"Error in OpenFileByName: %r\n", Status); - } - offset += sizeof(UINT64); - } - - return EFI_SUCCESS; -} diff --git a/Lesson_28/UefiLessonsPkg/AcpiInfo/AcpiInfo.inf b/Lesson_28/UefiLessonsPkg/AcpiInfo/AcpiInfo.inf deleted file mode 100644 index 53d0356..0000000 --- a/Lesson_28/UefiLessonsPkg/AcpiInfo/AcpiInfo.inf +++ /dev/null @@ -1,24 +0,0 @@ -[Defines] - INF_VERSION = 1.25 - BASE_NAME = AcpiInfo - FILE_GUID = 18998798-69a2-4ab5-9ffc-a8ee2494b029 - MODULE_TYPE = UEFI_APPLICATION - VERSION_STRING = 1.0 - ENTRY_POINT = UefiMain - -[Sources] - AcpiInfo.c - -[Packages] - MdePkg/MdePkg.dec - -[LibraryClasses] - UefiApplicationEntryPoint - UefiLib - -[Guids] - gEfiAcpi20TableGuid - -[Protocols] - gEfiShellProtocolGuid - |