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-rw-r--r--Lessons/Lesson_61/README.md420
-rw-r--r--Lessons/Lesson_61/UefiLessonsPkg/UefiLessonsPkg.dsc84
-rw-r--r--Lessons/Lesson_61/UefiLessonsPkg/UpdateDmpstoreDump/UpdateDmpstoreDump.c123
-rw-r--r--Lessons/Lesson_61/UefiLessonsPkg/UpdateDmpstoreDump/UpdateDmpstoreDump.inf26
-rw-r--r--Lessons/Lesson_61/bootorder.pngbin0 -> 10651 bytes
-rw-r--r--Lessons/Lesson_61/hexedit_1.pngbin0 -> 5291 bytes
-rw-r--r--Lessons/Lesson_61/hexedit_2.pngbin0 -> 5255 bytes
-rw-r--r--Lessons/Lesson_61/hexedit_3.pngbin0 -> 5270 bytes
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diff --git a/Lessons/Lesson_61/README.md b/Lessons/Lesson_61/README.md
new file mode 100644
index 0000000..f0ef50b
--- /dev/null
+++ b/Lessons/Lesson_61/README.md
@@ -0,0 +1,420 @@
+UEFI shell has a `dmpstore` command that helps to see content of UEFI variables.
+
+If you'll look at the help of the `dmpstore` command you could see one more useful feature that this command presents. With this command it is possible to save UEFI variables to a file and load them back from such files:
+```
+FS0:\> dmpstore -?
+...
+DMPSTORE [-all | ([variable] [-guid guid])] [-s file]
+DMPSTORE [-all | ([variable] [-guid guid])] [-l file]
+...
+ -s - Saves variables to a file.
+ -l - Loads and sets variables from a file.
+...
+```
+Let's try to use this mechanics to modify content of an existing UEFI variable. It can be a useful feature for the debug.
+
+In some earlier lesson we've created the `ShowBootVariables.efi` application that displays boot sources based on the content of UEFU boot variables:
+```
+FS0:\> ShowBootVariables.efi
+Boot0000
+UiApp
+Fv(7CB8BDC9-F8EB-4F34-AAEA-3EE4AF6516A1)/FvFile(462CAA21-7614-4503-836E-8AB6F4662331)
+
+Boot0001
+UEFI QEMU DVD-ROM QM00003
+PciRoot(0x0)/Pci(0x1,0x1)/Ata(0x0)
+
+Boot0002*
+EFI Internal Shell
+Fv(7CB8BDC9-F8EB-4F34-AAEA-3EE4AF6516A1)/FvFile(7C04A583-9E3E-4F1C-AD65-E05268D0B4D1)
+
+Boot0003
+UEFI QEMU HARDDISK QM00001
+PciRoot(0x0)/Pci(0x1,0x1)/Ata(0x0)
+```
+
+One of the variables that were parsed in this application is a `BootOrder` variable. Just in case you forgot:
+```
+The BootOrder variable contains an array of UINT16’s that make up an ordered list of the Boot####
+options. The first element in the array is the value for the first logical boot option, the second element is
+the value for the second logical boot option, etc. The BootOrder order list is used by the firmware’s
+boot manager as the default boot order.
+```
+
+Print the content of the BootOrder variable
+```
+FS0:\> dmpstore BootOrder
+Variable NV+RT+BS 'EFIGlobalVariable:BootOrder' DataSize = 0x08
+ 00000000: 00 00 01 00 02 00 03 00- *........*
+```
+This means that the order is:
+```
+Boot0000
+Boot0001
+Boot0002
+Boot0003
+```
+Everything is like our `ShowBootVariables` application shows.
+
+With a help of the `dmpstore` command we can dump the content of a `BootOrder` variable to a file:
+```
+FS0:\> dmpstore BootOrder -s BootOrder.bin
+Save variable to file: BootOrder.bin.
+Variable NV+RT+BS '8BE4DF61-93CA-11D2-AA0D-00E098032B8C:BootOrder' DataSize = 0x08
+```
+
+UEFI shell contains `hexedit` command in itself. With it we can see the content of a created file:
+
+![hexediti_1.png](hexedit_1.png?raw=true "BootOrder.bin before modifications")
+
+`hexedit` is a hex editor, you can see its help message with a `Ctrl+E` command:
+
+![hexedit_help.png](hexedit_help.png?raw=true "hexedit help")
+
+Exit help with `Ctrl-W`.
+
+`dmpstore` command represents each variable with a following structure in a file:
+```
+{
+ UINT32 NameSize; // Size of the variable name in bytes
+ UINT32 DataSize; // Size of the variable data in bytes
+ CHAR16 Name[NameSize/2]; // Variable name in CHAR16
+ EFI_GUID Guid; // Variable GUID
+ UINT32 Attributes; // Variable attributes
+ UINT8 Data[DataSize]; // Variable data
+ UINT32 Crc; // CRC32 checksum for the record
+}
+```
+
+Here is a file content with a highlight for the structure fileds:
+
+![bootorder.png](bootorder.png?raw=true "bootorder")
+
+Let's try to modify the file content changing the boot order to:
+```
+Boot0001
+Boot0000
+Boot0002
+Boot0003
+```
+
+![hexedit_2.png](hexedit_2.png?raw=true "hexedit after modification")
+
+Type `Ctrl+Q` to quit and enter `y` to save our modifications.
+
+If you'll try to load the changed settings you would get an error:
+```
+FS0:\> dmpstore -l BootOrder.bin
+Load and set variables from file: BootOrder.bin.
+dmpstore: Incorrect file format.
+dmpstore: No matching variables found. Guid 8BE4DF61-93CA-11D2-AA0D-00E098032B8C
+```
+This is happening because `UINT32 Crc` field of the record is not longer valid for the current record content.
+
+Let's create an application `UpdateDmpstoreDump` to update CRC fields in the `dmpstore` dumps.
+
+Once again as we would parse command shell arguments it is better to create a shell application. We would read and write files, therefore include `ShellLib` to the `LibraryClasses`:
+`UefiLessonsPkg/UpdateDmpstoreDump/UpdateDmpstoreDump.inf`:
+```
+[Defines]
+ INF_VERSION = 1.25
+ BASE_NAME = UpdateDmpstoreDump
+ FILE_GUID = d14fe21b-7dbf-40ff-96cb-5d6f5b63cda6
+ MODULE_TYPE = UEFI_APPLICATION
+ VERSION_STRING = 1.0
+ ENTRY_POINT = ShellCEntryLib
+
+[Sources]
+ UpdateDmpstoreDump.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ ShellPkg/ShellPkg.dec
+
+[LibraryClasses]
+ UefiApplicationEntryPoint
+ UefiLib
+ ShellCEntryLib
+ ShellLib
+```
+
+In the `UefiLessonsPkg/UpdateDmpstoreDump/UpdateDmpstoreDump.c` we start from reading dump file name from the command argument and opening the file with read and write attributes:
+```
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiLib.h>
+#include <Library/ShellLib.h>
+#include <Library/MemoryAllocationLib.h>
+
+VOID Usage()
+{
+ Print(L"Recalculate CRCs for dmpstore command dump\n");
+ Print(L"\n");
+ Print(L" UpdateDmpstoreDump <filename>\n");
+}
+
+INTN EFIAPI ShellAppMain(IN UINTN Argc, IN CHAR16 **Argv)
+{
+ if (Argc!=2) {
+ Usage();
+ return EFI_INVALID_PARAMETER;
+ }
+
+ SHELL_FILE_HANDLE FileHandle;
+
+ CHAR16* Filename = Argv[1];
+ EFI_STATUS Status = ShellOpenFileByName(
+ Filename,
+ &FileHandle,
+ EFI_FILE_MODE_WRITE | EFI_FILE_MODE_READ,
+ 0
+ );
+ if (EFI_ERROR(Status)) {
+ Print(L"Error! Can't open file %s\n", Filename);
+ return Status;
+ }
+
+ ...
+
+ Status = ShellCloseFile(&FileHandle);
+ if (EFI_ERROR(Status)) {
+ Print(L"Can't close file: %r\n", Status);
+ }
+
+ return EFI_SUCCESS;
+}
+```
+
+The dump file can have many records in itself and the size of a record is not a constant, but depends on the record fields. Therefore the only way to fix all record CRCs is to step throught the file records until the file end:
+```
+ UINT64 FileSize;
+ Status = ShellGetFileSize(FileHandle, &FileSize);
+ if (EFI_ERROR(Status)) {
+ Status = ShellCloseFile(&FileHandle);
+ return SHELL_DEVICE_ERROR;
+ }
+
+ UINT64 FilePos = 0;
+ while (FilePos < FileSize) {
+ ...
+ }
+```
+
+Here is a code to read record data and calculate its CRC32. It is pretty similar to the one that `dmpstore` command has it its `LoadVariablesFromFilefunction` (https://github.com/tianocore/edk2/blob/master/ShellPkg/Library/UefiShellDebug1CommandsLib/DmpStore.c):
+```
+UINTN ToReadSize;
+UINT32 NameSize;
+ToReadSize = sizeof(NameSize);
+Status = ShellReadFile(FileHandle, &ToReadSize, &NameSize);
+if (EFI_ERROR(Status) || (ToReadSize != sizeof(NameSize))) {
+ Status = SHELL_VOLUME_CORRUPTED;
+ break;
+}
+FilePos += ToReadSize;
+
+UINT32 DataSize;
+ToReadSize = sizeof(DataSize);
+Status = ShellReadFile(FileHandle, &ToReadSize, &DataSize);
+if (EFI_ERROR(Status) || (ToReadSize != sizeof(DataSize))) {
+ Status = SHELL_VOLUME_CORRUPTED;
+ break;
+}
+FilePos += ToReadSize;
+
+UINTN RemainingSize = NameSize +
+ sizeof(EFI_GUID) +
+ sizeof(UINT32) +
+ DataSize;
+UINT8* Buffer = AllocatePool(sizeof(NameSize) + sizeof(DataSize) + RemainingSize);
+if (Buffer == NULL) {
+ Status = SHELL_OUT_OF_RESOURCES;
+ break;
+}
+
+*(UINT32*)Buffer = NameSize;
+*((UINT32*)Buffer + 1) = DataSize;
+
+ToReadSize = RemainingSize;
+Status = ShellReadFile(FileHandle, &ToReadSize, (UINT32*)Buffer + 2);
+if (EFI_ERROR(Status) || (ToReadSize != RemainingSize)) {
+ Status = SHELL_VOLUME_CORRUPTED;
+ FreePool (Buffer);
+ break;
+}
+FilePos += ToReadSize;
+
+
+UINT32 Crc32;
+gBS->CalculateCrc32 (
+ Buffer,
+ sizeof(NameSize) + sizeof(DataSize) + RemainingSize,
+ &Crc32
+);
+
+...
+
+FreePool(Buffer);
+```
+
+To calculate the CRC32 checksum here we use `EFI_BOOT_SERVICES.CalculateCrc32()` function:
+```
+EFI_BOOT_SERVICES.CalculateCrc32()
+
+Summary:
+Computes and returns a 32-bit CRC for a data buffer.
+
+Prototype:
+typedef
+EFI_STATUS
+(EFIAPI *EFI_CALCULATE_CRC32)
+ IN VOID *Data,
+ IN UINTN DataSize,
+ OUT UINT32 *Crc32
+ );
+
+Parameters:
+Data A pointer to the buffer on which the 32-bit CRC is to be computed.
+DataSize The number of bytes in the buffer Data.
+Crc32 The 32-bit CRC that was computed for the data buffer specified by Data and DataSize.
+
+Description:
+This function computes the 32-bit CRC for the data buffer specified by Data and DataSize. If the 32-bit CRC is computed, then it is returned in Crc32 and EFI_SUCCESS is returned.
+```
+
+When we have our CRC32 checksum we can update file content with a help of a `ShellWriteFile` function:
+```
+UINTN ToWriteSize = sizeof(Crc32);
+Status = ShellWriteFile(
+ FileHandle,
+ &ToWriteSize,
+ &Crc32
+);
+if (EFI_ERROR(Status) || (ToWriteSize != sizeof(Crc32))) {
+ Print(L"Error! Not all data was written\n");
+ FreePool(Buffer);
+ break;
+}
+FilePos += ToWriteSize;
+```
+
+Build our application and use it on the `dmpstore` dump:
+```
+FS0:\> UpdateDmpstoreDump.efi BootOrder.bin
+```
+
+If you look at the file content again you would see that the CRC field has changed.
+
+![hexedit_3.png](hexedit_3.png?raw=true "hexedit after CRC modification")
+
+Now `dmpstore -l` would finish without errors:
+```
+FS0:\> dmpstore -l BootOrder.bin
+Load and set variables from file: BootOrder.bin.
+Variable NV+RT+BS '8BE4DF61-93CA-11D2-AA0D-00E098032B8C:BootOrder' DataSize = 0x08
+```
+
+You can see that variable content was modified:
+```
+FS0:\> dmpstore BootOrder
+Variable NV+RT+BS 'EFIGlobalVariable:BootOrder' DataSize = 0x08
+ 00000000: 01 00 00 00 02 00 03 00- *........*
+```
+
+You can also use our `ShowBootVariables.efi` application to see the changes:
+```
+FS0:\> ShowBootVariables.efi
+Boot0001
+UEFI QEMU DVD-ROM QM00003
+PciRoot(0x0)/Pci(0x1,0x1)/Ata(0x0)
+
+Boot0000
+UiApp
+Fv(7CB8BDC9-F8EB-4F34-AAEA-3EE4AF6516A1)/FvFile(462CAA21-7614-4503-836E-8AB6F4662331)
+
+Boot0002*
+EFI Internal Shell
+Fv(7CB8BDC9-F8EB-4F34-AAEA-3EE4AF6516A1)/FvFile(7C04A583-9E3E-4F1C-AD65-E05268D0B4D1)
+
+Boot0003
+UEFI QEMU HARDDISK QM00001
+PciRoot(0x0)/Pci(0x1,0x1)/Ata(0x0)
+```
+__________________________
+
+We can also verify that our program works in case when there are multiple variables in the dump file.
+
+Just in case you have some persistent variables from the previous lesson delete all the variables under our GUID with a `dmpstore -d -guid <GUID>` command:
+```
+FS0:\> dmpstore -d -guid bb2a829f-7943-4691-a03a-f1f48519d7e6
+dmpstore: No matching variables found. Guid 7C04A583-9E3E-4F1C-AD65-E05268D0B4D1
+
+```
+
+Create new variables and save them to a file:
+```
+FS0:\> SetVariableExample.efi HelloVar nb "Hello World"
+Variable HelloVar was successfully changed
+FS0:\> SetVariableExample.efi ByeVar nbr "Bye World"
+Variable ByeVar was successfully changed
+FS0:\> dmpstore -guid bb2a829f-7943-4691-a03a-f1f48519d7e6 -s MyVar.bin
+Save variable to file: MyVar.bin.
+Variable NV+RT+BS 'BB2A829F-7943-4691-A03A-F1F48519D7E6:ByeVar' DataSize = 0x16
+Variable NV+BS 'BB2A829F-7943-4691-A03A-F1F48519D7E6:HelloVar' DataSize = 0x1A
+```
+
+Use hexedit to modify `World` string in both records of a dump file. Here I've just increased each letter code with 1.
+
+Before:
+```
+00000000 0E 00 00 00 14 00 00 00 42 00 79 00 65 00 56 00 ........B.y.e.V.
+00000010 61 00 72 00 00 00 9F 82 2A BB 43 79 91 46 A0 3A a.r...??*?Cy?F?:
+00000020 F1 F4 85 19 D7 E6 07 00 00 00 42 00 79 00 65 00 ???.??....B.y.e.
+00000030 20 00 57 00 6F 00 72 00 6C 00 64 00 00 00 EC 24 .W.o.r.l.d...?$
+00000040 78 CD 12 00 00 00 18 00 00 00 48 00 65 00 6C 00 x?........H.e.l.
+00000050 6C 00 6F 00 56 00 61 00 72 00 00 00 9F 82 2A BB l.o.V.a.r...??*?
+00000060 43 79 91 46 A0 3A F1 F4 85 19 D7 E6 03 00 00 00 Cy?F?:???.??....
+00000070 48 00 65 00 6C 00 6C 00 6F 00 20 00 57 00 6F 00 H.e.l.l.o. .W.o.
+00000080 72 00 6C 00 64 00 00 00 97 82 10 13 r.l.d...??..
+```
+After:
+```
+00000000 0E 00 00 00 14 00 00 00 42 00 79 00 65 00 56 00 ........B.y.e.V.
+00000010 61 00 72 00 00 00 9F 82 2A BB 43 79 91 46 A0 3A a.r...??*?Cy?F?:
+00000020 F1 F4 85 19 D7 E6 07 00 00 00 42 00 79 00 65 00 ???.??....B.y.e.
+00000030 20 00 58 00 70 00 73 00 6D 00 65 00 00 00 EC 24 .X.p.s.m.e...?$
+00000040 78 CD 12 00 00 00 18 00 00 00 48 00 65 00 6C 00 x?........H.e.l.
+00000050 6C 00 6F 00 56 00 61 00 72 00 00 00 9F 82 2A BB l.o.V.a.r...??*?
+00000060 43 79 91 46 A0 3A F1 F4 85 19 D7 E6 03 00 00 00 Cy?F?:???.??....
+00000070 48 00 65 00 6C 00 6C 00 6F 00 20 00 58 00 70 00 H.e.l.l.o. .X.p.
+00000080 73 00 6D 00 65 00 00 00 97 82 10 13 s.m.e...??..
+```
+
+Use our program to update checksums:
+```
+FS0:\> UpdateDmpstoreDump.efi MyVar.bin
+```
+
+Now you can verify that our new dump indeed have changed both variables content:
+```
+FS0:\> dmpstore -guid bb2a829f-7943-4691-a03a-f1f48519d7e6
+Variable NV+RT+BS 'BB2A829F-7943-4691-A03A-F1F48519D7E6:ByeVar' DataSize = 0x14
+ 00000000: 42 00 79 00 65 00 20 00-57 00 6F 00 72 00 6C 00 *B.y.e. .W.o.r.l.*
+ 00000010: 64 00 00 00 *d...*
+Variable NV+BS 'BB2A829F-7943-4691-A03A-F1F48519D7E6:HelloVar' DataSize = 0x18
+ 00000000: 48 00 65 00 6C 00 6C 00-6F 00 20 00 57 00 6F 00 *H.e.l.l.o. .W.o.*
+ 00000010: 72 00 6C 00 64 00 00 00- *r.l.d...*
+
+FS0:\> dmpstore -guid bb2a829f-7943-4691-a03a-f1f48519d7e6 -l MyVar.bin
+Load and set variables from file: MyVar.bin.
+Variable NV+RT+BS 'BB2A829F-7943-4691-A03A-F1F48519D7E6:ByeVar' DataSize = 0x14
+Variable NV+BS 'BB2A829F-7943-4691-A03A-F1F48519D7E6:HelloVar' DataSize = 0x18
+
+FS0:\> dmpstore -guid bb2a829f-7943-4691-a03a-f1f48519d7e6
+Variable NV+BS 'BB2A829F-7943-4691-A03A-F1F48519D7E6:HelloVar' DataSize = 0x18
+ 00000000: 48 00 65 00 6C 00 6C 00-6F 00 20 00 58 00 70 00 *H.e.l.l.o. .X.p.*
+ 00000010: 73 00 6D 00 65 00 00 00- *s.m.e...*
+Variable NV+RT+BS 'BB2A829F-7943-4691-A03A-F1F48519D7E6:ByeVar' DataSize = 0x14
+ 00000000: 42 00 79 00 65 00 20 00-58 00 70 00 73 00 6D 00 *B.y.e. .X.p.s.m.*
+ 00000010: 65 00 00 00 *e...*
+```
+
+Keep in mind that if you change size of the variable data, you need to change the `UINT32 DataSize` field as well.
diff --git a/Lessons/Lesson_61/UefiLessonsPkg/UefiLessonsPkg.dsc b/Lessons/Lesson_61/UefiLessonsPkg/UefiLessonsPkg.dsc
new file mode 100644
index 0000000..2180620
--- /dev/null
+++ b/Lessons/Lesson_61/UefiLessonsPkg/UefiLessonsPkg.dsc
@@ -0,0 +1,84 @@
+##
+# Copyright (c) 2021, Konstantin Aladyshev <aladyshev22@gmail.com>
+#
+# SPDX-License-Identifier: MIT
+##
+
+[Defines]
+ DSC_SPECIFICATION = 0x0001001C
+ PLATFORM_GUID = 3db7270f-ffac-4139-90a4-0ae68f3f8167
+ PLATFORM_VERSION = 0.01
+ PLATFORM_NAME = UefiLessonsPkg
+ SKUID_IDENTIFIER = DEFAULT
+ SUPPORTED_ARCHITECTURES = X64
+ BUILD_TARGETS = RELEASE
+
+
+[LibraryClasses]
+ UefiApplicationEntryPoint|MdePkg/Library/UefiApplicationEntryPoint/UefiApplicationEntryPoint.inf
+ UefiBootServicesTableLib|MdePkg/Library/UefiBootServicesTableLib/UefiBootServicesTableLib.inf
+ DebugLib|MdePkg/Library/UefiDebugLibConOut/UefiDebugLibConOut.inf
+ BaseLib|MdePkg/Library/BaseLib/BaseLib.inf
+ #PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
+ PcdLib|MdePkg/Library/DxePcdLib/DxePcdLib.inf
+ BaseMemoryLib|MdePkg/Library/BaseMemoryLib/BaseMemoryLib.inf
+ RegisterFilterLib|MdePkg/Library/RegisterFilterLibNull/RegisterFilterLibNull.inf
+ PrintLib|MdePkg/Library/BasePrintLib/BasePrintLib.inf
+ DebugPrintErrorLevelLib|MdePkg/Library/BaseDebugPrintErrorLevelLib/BaseDebugPrintErrorLevelLib.inf
+ UefiLib|MdePkg/Library/UefiLib/UefiLib.inf
+ MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
+ DevicePathLib|MdePkg/Library/UefiDevicePathLib/UefiDevicePathLib.inf
+ UefiRuntimeServicesTableLib|MdePkg/Library/UefiRuntimeServicesTableLib/UefiRuntimeServicesTableLib.inf
+ ShellCEntryLib|ShellPkg/Library/UefiShellCEntryLib/UefiShellCEntryLib.inf
+ ShellLib|ShellPkg/Library/UefiShellLib/UefiShellLib.inf
+ FileHandleLib|MdePkg/Library/UefiFileHandleLib/UefiFileHandleLib.inf
+ HiiLib|MdeModulePkg/Library/UefiHiiLib/UefiHiiLib.inf
+ SortLib|MdeModulePkg/Library/UefiSortLib/UefiSortLib.inf
+ UefiHiiServicesLib|MdeModulePkg/Library/UefiHiiServicesLib/UefiHiiServicesLib.inf
+ UefiDriverEntryPoint|MdePkg/Library/UefiDriverEntryPoint/UefiDriverEntryPoint.inf
+ #SimpleLibrary|UefiLessonsPkg/Library/SimpleLibrary/SimpleLibrary.inf
+ #SimpleLibrary|UefiLessonsPkg/Library/SimpleLibraryWithConstructor/SimpleLibraryWithConstructor.inf
+ SimpleLibrary|UefiLessonsPkg/Library/SimpleLibraryWithConstructorAndDestructor/SimpleLibraryWithConstructorAndDestructor.inf
+
+[Components]
+ UefiLessonsPkg/SimplestApp/SimplestApp.inf
+ UefiLessonsPkg/HelloWorld/HelloWorld.inf
+ UefiLessonsPkg/ImageHandle/ImageHandle.inf
+ UefiLessonsPkg/ImageInfo/ImageInfo.inf
+ UefiLessonsPkg/MemoryInfo/MemoryInfo.inf
+ UefiLessonsPkg/SimpleShellApp/SimpleShellApp.inf
+ UefiLessonsPkg/ListVariables/ListVariables.inf
+ UefiLessonsPkg/ShowBootVariables/ShowBootVariables.inf
+ UefiLessonsPkg/InteractiveApp/InteractiveApp.inf
+ UefiLessonsPkg/PCDLesson/PCDLesson.inf
+ UefiLessonsPkg/SmbiosInfo/SmbiosInfo.inf
+ UefiLessonsPkg/ShowTables/ShowTables.inf
+ UefiLessonsPkg/AcpiInfo/AcpiInfo.inf
+ UefiLessonsPkg/SaveBGRT/SaveBGRT.inf
+ UefiLessonsPkg/ListPCI/ListPCI.inf
+ UefiLessonsPkg/SimpleDriver/SimpleDriver.inf
+ UefiLessonsPkg/PCIRomInfo/PCIRomInfo.inf
+ UefiLessonsPkg/Library/SimpleLibrary/SimpleLibrary.inf
+ UefiLessonsPkg/Library/SimpleLibraryWithConstructor/SimpleLibraryWithConstructor.inf
+ UefiLessonsPkg/SimpleLibraryUser/SimpleLibraryUser.inf
+ UefiLessonsPkg/SimpleClassProtocol/SimpleClassProtocol.inf
+ UefiLessonsPkg/SimpleClassUser/SimpleClassUser.inf
+ UefiLessonsPkg/HotKeyDriver/HotKeyDriver.inf
+ UefiLessonsPkg/ShowHII/ShowHII.inf
+ UefiLessonsPkg/HIIStringsC/HIIStringsC.inf
+ UefiLessonsPkg/HIIStringsUNI/HIIStringsUNI.inf
+ UefiLessonsPkg/HIIStringsUNIRC/HIIStringsUNIRC.inf
+ UefiLessonsPkg/HIIStringsMan/HIIStringsMan.inf
+ UefiLessonsPkg/HIIAddRussianFont/HIIAddRussianFont.inf
+ UefiLessonsPkg/HIIAddLocalization/HIIAddLocalization.inf
+ UefiLessonsPkg/AddNewLanguage/AddNewLanguage.inf
+ UefiLessonsPkg/HIISimpleForm/HIISimpleForm.inf
+ UefiLessonsPkg/HIIStaticForm/HIIStaticForm.inf
+ UefiLessonsPkg/HIIStaticFormDriver/HIIStaticFormDriver.inf
+ UefiLessonsPkg/DisplayHIIByGuid/DisplayHIIByGuid.inf
+ UefiLessonsPkg/SetVariableExample/SetVariableExample.inf
+ UefiLessonsPkg/UpdateDmpstoreDump/UpdateDmpstoreDump.inf
+
+[PcdsFixedAtBuild]
+ gUefiLessonsPkgTokenSpaceGuid.PcdMyVar32_2|44
+
diff --git a/Lessons/Lesson_61/UefiLessonsPkg/UpdateDmpstoreDump/UpdateDmpstoreDump.c b/Lessons/Lesson_61/UefiLessonsPkg/UpdateDmpstoreDump/UpdateDmpstoreDump.c
new file mode 100644
index 0000000..e926514
--- /dev/null
+++ b/Lessons/Lesson_61/UefiLessonsPkg/UpdateDmpstoreDump/UpdateDmpstoreDump.c
@@ -0,0 +1,123 @@
+/*
+ * Copyright (c) 2021, Konstantin Aladyshev <aladyshev22@gmail.com>
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiLib.h>
+#include <Library/ShellLib.h>
+#include <Library/MemoryAllocationLib.h>
+
+VOID Usage()
+{
+ Print(L"Recalculate CRCs for dmpstore command dump\n");
+ Print(L"\n");
+ Print(L" UpdateDmpstoreDump <filename>\n");
+}
+
+INTN EFIAPI ShellAppMain(IN UINTN Argc, IN CHAR16 **Argv)
+{
+ if (Argc!=2) {
+ Usage();
+ return EFI_INVALID_PARAMETER;
+ }
+
+ SHELL_FILE_HANDLE FileHandle;
+
+ CHAR16* Filename = Argv[1];
+ EFI_STATUS Status = ShellOpenFileByName(
+ Filename,
+ &FileHandle,
+ EFI_FILE_MODE_WRITE | EFI_FILE_MODE_READ,
+ 0
+ );
+ if (EFI_ERROR(Status)) {
+ Print(L"Error! Can't open file %s\n", Filename);
+ return Status;
+ }
+
+ UINT64 FileSize;
+ Status = ShellGetFileSize(FileHandle, &FileSize);
+ if (EFI_ERROR(Status)) {
+ Status = ShellCloseFile(&FileHandle);
+ return SHELL_DEVICE_ERROR;
+ }
+
+ UINT64 FilePos = 0;
+ while (FilePos < FileSize) {
+ UINTN ToReadSize;
+ UINT32 NameSize;
+ ToReadSize = sizeof(NameSize);
+ Status = ShellReadFile(FileHandle, &ToReadSize, &NameSize);
+ if (EFI_ERROR(Status) || (ToReadSize != sizeof(NameSize))) {
+ Status = SHELL_VOLUME_CORRUPTED;
+ break;
+ }
+ FilePos += ToReadSize;
+
+ UINT32 DataSize;
+ ToReadSize = sizeof(DataSize);
+ Status = ShellReadFile(FileHandle, &ToReadSize, &DataSize);
+ if (EFI_ERROR(Status) || (ToReadSize != sizeof(DataSize))) {
+ Status = SHELL_VOLUME_CORRUPTED;
+ break;
+ }
+ FilePos += ToReadSize;
+
+ UINTN RemainingSize = NameSize +
+ sizeof(EFI_GUID) +
+ sizeof(UINT32) +
+ DataSize;
+ UINT8* Buffer = AllocatePool(sizeof(NameSize) + sizeof(DataSize) + RemainingSize);
+ if (Buffer == NULL) {
+ Status = SHELL_OUT_OF_RESOURCES;
+ break;
+ }
+
+ *(UINT32*)Buffer = NameSize;
+ *((UINT32*)Buffer + 1) = DataSize;
+
+ ToReadSize = RemainingSize;
+ Status = ShellReadFile(FileHandle, &ToReadSize, (UINT32*)Buffer + 2);
+ if (EFI_ERROR(Status) || (ToReadSize != RemainingSize)) {
+ Status = SHELL_VOLUME_CORRUPTED;
+ FreePool (Buffer);
+ break;
+ }
+ FilePos += ToReadSize;
+
+
+ UINT32 Crc32;
+ gBS->CalculateCrc32 (
+ Buffer,
+ sizeof(NameSize) + sizeof(DataSize) + RemainingSize,
+ &Crc32
+ );
+
+ UINTN ToWriteSize = sizeof(Crc32);
+ Status = ShellWriteFile(
+ FileHandle,
+ &ToWriteSize,
+ &Crc32
+ );
+ if (EFI_ERROR(Status) || (ToWriteSize != sizeof(Crc32))) {
+ Print(L"Error! Not all data was written\n");
+ FreePool(Buffer);
+ break;
+ }
+ FilePos += ToWriteSize;
+ FreePool(Buffer);
+ }
+
+ if (EFI_ERROR(Status)) {
+ Print(L"Error! %r\n", Status);
+ }
+
+ Status = ShellCloseFile(&FileHandle);
+ if (EFI_ERROR(Status)) {
+ Print(L"Can't close file: %r\n", Status);
+ }
+
+ return EFI_SUCCESS;
+}
diff --git a/Lessons/Lesson_61/UefiLessonsPkg/UpdateDmpstoreDump/UpdateDmpstoreDump.inf b/Lessons/Lesson_61/UefiLessonsPkg/UpdateDmpstoreDump/UpdateDmpstoreDump.inf
new file mode 100644
index 0000000..eef23cc
--- /dev/null
+++ b/Lessons/Lesson_61/UefiLessonsPkg/UpdateDmpstoreDump/UpdateDmpstoreDump.inf
@@ -0,0 +1,26 @@
+##
+# Copyright (c) 2021, Konstantin Aladyshev <aladyshev22@gmail.com>
+#
+# SPDX-License-Identifier: MIT
+##
+
+[Defines]
+ INF_VERSION = 1.25
+ BASE_NAME = UpdateDmpstoreDump
+ FILE_GUID = d14fe21b-7dbf-40ff-96cb-5d6f5b63cda6
+ MODULE_TYPE = UEFI_APPLICATION
+ VERSION_STRING = 1.0
+ ENTRY_POINT = ShellCEntryLib
+
+[Sources]
+ UpdateDmpstoreDump.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ ShellPkg/ShellPkg.dec
+
+[LibraryClasses]
+ UefiApplicationEntryPoint
+ UefiLib
+ ShellCEntryLib
+ ShellLib
diff --git a/Lessons/Lesson_61/bootorder.png b/Lessons/Lesson_61/bootorder.png
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diff --git a/Lessons/Lesson_61/hexedit_1.png b/Lessons/Lesson_61/hexedit_1.png
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diff --git a/Lessons/Lesson_61/hexedit_2.png b/Lessons/Lesson_61/hexedit_2.png
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diff --git a/Lessons/Lesson_61/hexedit_3.png b/Lessons/Lesson_61/hexedit_3.png
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diff --git a/Lessons/Lesson_61/hexedit_help.png b/Lessons/Lesson_61/hexedit_help.png
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generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-31 11:44:39 +0000