From: MC-Long <877730493@qq.com>
Date: ææå
, 29 May 2021 07:03:37 +0000 (+0800)
Subject: sdm845Pkg: add new driver Op6tSlotDxe
X-Git-Tag: v0.4~33
X-Git-Url: https://git.renegade-project.org/?a=commitdiff_plain;h=7807db6fbda1ce54b1d8e53639faefc870f9d445;p=edk2-sdm845.git
sdm845Pkg: add new driver Op6tSlotDxe
---
diff --git a/sdm845Pkg/Drivers/Op6tSlotDxe/LICENSE b/sdm845Pkg/Drivers/Op6tSlotDxe/LICENSE
new file mode 100644
index 0000000..f288702
--- /dev/null
+++ b/sdm845Pkg/Drivers/Op6tSlotDxe/LICENSE
@@ -0,0 +1,674 @@
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+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+ 17. Interpretation of Sections 15 and 16.
+
+ If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+
+ Copyright (C)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+ Copyright (C)
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+.
diff --git a/sdm845Pkg/Drivers/Op6tSlotDxe/Op6tSlotDxe.inf b/sdm845Pkg/Drivers/Op6tSlotDxe/Op6tSlotDxe.inf
new file mode 100644
index 0000000..7a330d5
--- /dev/null
+++ b/sdm845Pkg/Drivers/Op6tSlotDxe/Op6tSlotDxe.inf
@@ -0,0 +1,24 @@
+[Defines]
+ INF_VERSION = 0x0010005
+ BASE_NAME = Op6tSlotDxe
+ MODULE_TYPE = DXE_DRIVER
+ FILE_GUID = ff270133-610c-45b5-3acb-879e91b5d1dd
+ VERSION_STRING = 1.0
+ ENTRY_POINT = SlotMain
+[Sources]
+ slot.c
+ slot.h
+ crc32.c
+ crc32.h
+[Packages]
+ MdePkg/MdePkg.dec
+[LibraryClasses]
+ UefiDriverEntryPoint
+ UefiLib
+[Protocols]
+ gEfiDiskIoProtocolGuid
+ gEfiBlockIoProtocolGuid
+[Depex]
+ TRUE
+[BuildOptions]
+#GCC:*_*_*_CC_FLAGS = -Wno-error
diff --git a/sdm845Pkg/Drivers/Op6tSlotDxe/README.md b/sdm845Pkg/Drivers/Op6tSlotDxe/README.md
new file mode 100644
index 0000000..55ec522
--- /dev/null
+++ b/sdm845Pkg/Drivers/Op6tSlotDxe/README.md
@@ -0,0 +1,24 @@
+# Op6TSlot
+Add A/B slot support for OnePlus 6T EFI-EDK2 firmware.
+
+## Introduction
+ The OnePlus 6T device uses the A/B slot mode proposed by AOSP. Each time it is started, the bootloader checks if the current slot is available or switches if not.
+Therefore, when we use a non-Android system, bootloader will assume that the current slot used is damaged and switch between the slots, since the slot status cannot be updated.
+When the same thing happens in another slot, bootloader forces it into fastboot.
+ This UEFI Application module is designed to automatically update the slot state after entering UEFI firmware, without requiring an OS level solution to this problem.
+ [Implementing A/B Updates](https://source.android.com/devices/tech/ota/ab/ab_implement)
+ [About GPT](https://uefi.org/sites/default/files/resources/UEFI_Spec_2_9_2021_03_18.pdf)
+
+## Current Status
+- [x] Find the disk with the flag.
+- [x] Write Slot flag(Active/Bootable/Unbootable) to the disk
+- [x] Read GPT partition entry
+- [x] Generating CRC32 code for GPT partition entry
+- [x] Write the CRC32 code of GPT partition entry to the specified position
+- [x] Read the first 92 bytes of the GPT header
+- [x] Generating CRC32 code of GPT header
+- [x] Write the CRC32 code of GPT header to the specified position
+- [x] Has the problem been solved?
+
+## License
+The software is distributed under GPL v3 with additional terms.
diff --git a/sdm845Pkg/Drivers/Op6tSlotDxe/crc32.c b/sdm845Pkg/Drivers/Op6tSlotDxe/crc32.c
new file mode 100644
index 0000000..fb64d2f
--- /dev/null
+++ b/sdm845Pkg/Drivers/Op6tSlotDxe/crc32.c
@@ -0,0 +1,158 @@
+/*
+ * Op6tSlot Module
+ * Copyright (C) 2021 longjunyu
+ * Copyright (C) 2021 Junyue Wang
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see
+
+EFI_STATUS FixGptCRC32(EFI_BLOCK_IO_PROTOCOL *mBlockIoProtocol,
+ EFI_DISK_IO_PROTOCOL *mDiskIoProtocol,
+ EFI_SYSTEM_TABLE *mSystemTable){
+ EFI_STATUS status;
+ UINT32 mMediaId;
+ UINT32 mBlockSize;
+ mMediaId = mBlockIoProtocol->Media->MediaId;
+ mBlockSize = mBlockIoProtocol->Media->BlockSize;
+ unsigned char crc32_header[GPT_CRC32_LEN];
+ unsigned char crc32_entry[GPT_CRC32_LEN];
+ unsigned char *bufGptHeader;
+ unsigned char *bufGptEntry;
+ // try to allocate pool for bufGptEntry
+ status = mSystemTable->BootServices->AllocatePool(EfiBootServicesCode, GPT_ENTRY_COUNT * mBlockSize, (VOID**)&bufGptEntry);
+ if (EFI_ERROR(status)) {
+ return status;
+ }
+ // read gpt entry list
+ status = mDiskIoProtocol->ReadDisk(mDiskIoProtocol,
+ mMediaId,
+ 2 * mBlockSize,
+ GPT_ENTRY_COUNT * mBlockSize,
+ bufGptEntry);
+
+ if (EFI_ERROR(status))
+ return status;
+ // get gpt entry crc32 value
+ get_result_array(calculate_crc32(bufGptEntry, GPT_ENTRY_COUNT * mBlockSize), crc32_entry);
+
+ // write gpt entry crc32 value to disk
+ status = mDiskIoProtocol->WriteDisk(mDiskIoProtocol,
+ mMediaId,
+ mBlockSize + GPT_ENTRY_CRC32_LBA1_OFFSET,
+ GPT_CRC32_LEN,
+ crc32_entry);
+ if (EFI_ERROR(status))
+ return status;
+ // try to release bufGptEntry
+ status = mSystemTable->BootServices->FreePool(bufGptEntry);
+ if (EFI_ERROR(status)) {
+ return status;
+ }
+ // try to allocate pool for bufGptHeader
+ status = mSystemTable->BootServices->AllocatePool(EfiBootServicesCode, GPT_HEADER_SIZE, (VOID**)&bufGptHeader);
+ // get gpt header
+ status = mDiskIoProtocol->ReadDisk(mDiskIoProtocol,
+ mMediaId,
+ mBlockSize,
+ GPT_HEADER_SIZE,
+ bufGptHeader);
+ if (EFI_ERROR(status))
+ return status;
+ // set previous crc32 value to 0x00
+ for (int i = GPT_HEADER_CRC32_LBA1_OFFSET; i < GPT_HEADER_CRC32_LBA1_OFFSET + GPT_CRC32_LEN; i++) {
+ bufGptHeader[i] = 0x00;
+ }
+ // get gpt header crc32 value
+ get_result_array(calculate_crc32(bufGptHeader, GPT_HEADER_SIZE), crc32_header);
+ // write gpt header crc32 value to disk
+ status = mDiskIoProtocol->WriteDisk(mDiskIoProtocol,
+ mMediaId,
+ mBlockSize + GPT_HEADER_CRC32_LBA1_OFFSET,
+ GPT_CRC32_LEN,
+ crc32_header);
+ if (EFI_ERROR(status))
+ return status;
+ // try to release bufGptHeader
+ status = mSystemTable->BootServices->FreePool(bufGptHeader);
+ if (EFI_ERROR(status)) {
+ return status;
+ }
+ return EFI_SUCCESS;
+}
+
+/*
+* A8h reflected is 15h, i.e. 10101000 <--> 00010101
+*/
+int reflect(int data, int len)
+{
+ int ref = 0;
+
+ for (int i = 0; i < len; i++) {
+ if (data & 0x1) {
+ ref |= (1 << ((len - 1) - i));
+ }
+ data = (data >> 1);
+ }
+
+ return ref;
+}
+
+/*
+* Function to calculate the CRC32
+*/
+unsigned int calculate_crc32(unsigned char *buffer, int len)
+{
+ int byte_length = 8; /*length of unit (i.e. byte) */
+ int msb = 0;
+ int polynomial = 0x04C11DB7; /* IEEE 32bit polynomial */
+ unsigned int regs = 0xFFFFFFFF; /* init to all ones */
+ int regs_mask = 0xFFFFFFFF; /* ensure only 32 bit answer */
+ int regs_msb = 0;
+ unsigned int reflected_regs;
+
+ for (int i = 0; i < len; i++) {
+ int data_byte = buffer[i];
+ data_byte = reflect(data_byte, 8);
+ for (int j = 0; j < byte_length; j++) {
+ msb = data_byte >> (byte_length - 1); /* get MSB */
+ msb &= 1; /* ensure just 1 bit */
+ regs_msb = (regs >> 31) & 1; /* MSB of regs */
+ regs = regs << 1; /* shift regs for CRC-CCITT */
+ if (regs_msb ^ msb) { /* MSB is a 1 */
+ regs = regs ^ polynomial; /* XOR with generator poly */
+ }
+ regs = regs & regs_mask; /* Mask off excess upper bits */
+ data_byte <<= 1; /* get to next bit */
+ }
+ }
+ regs = regs & regs_mask;
+ reflected_regs = reflect(regs, 32) ^ 0xFFFFFFFF;
+
+ return reflected_regs;
+}
+
+// Convert Function
+//unsigned char** convert(unsigned int reflected_regs, int *size)
+void get_result_array(unsigned int reflected_regs, unsigned char * res)
+{
+
+ for (int i = 0; i < 4; i++) {
+ res[i] = reflected_regs & 0xff;
+ reflected_regs >>= 8;
+ }
+
+}
diff --git a/sdm845Pkg/Drivers/Op6tSlotDxe/crc32.h b/sdm845Pkg/Drivers/Op6tSlotDxe/crc32.h
new file mode 100644
index 0000000..b3eb3b1
--- /dev/null
+++ b/sdm845Pkg/Drivers/Op6tSlotDxe/crc32.h
@@ -0,0 +1,39 @@
+/*
+ * Op6tSlot Module
+ * Copyright (C) 2021 longjunyu
+ * Copyright (C) 2021 Junyue Wang
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see
+#include
+
+#define GPT_HEADER_CRC32_LBA1_OFFSET 0x10
+
+#define GPT_ENTRY_CRC32_LBA1_OFFSET 0x58
+
+#define GPT_CRC32_LEN 4
+
+#define GPT_HEADER_SIZE 92
+
+#define GPT_ENTRY_COUNT 3
+
+int reflect(int, int);
+
+unsigned int calculate_crc32(unsigned char*, int);
+
+void get_result_array(unsigned int, unsigned char*);
+
+EFI_STATUS FixGptCRC32(EFI_BLOCK_IO_PROTOCOL*, EFI_DISK_IO_PROTOCOL*, EFI_SYSTEM_TABLE*);
diff --git a/sdm845Pkg/Drivers/Op6tSlotDxe/slot.c b/sdm845Pkg/Drivers/Op6tSlotDxe/slot.c
new file mode 100644
index 0000000..ec67970
--- /dev/null
+++ b/sdm845Pkg/Drivers/Op6tSlotDxe/slot.c
@@ -0,0 +1,168 @@
+/*
+ * Op6tSlot Module
+ * Copyright (C) 2021 longjunyu
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see
+#include
+#include
+#include
+#include "slot.h"
+#include "crc32.h"
+
+void WaitAnyKey(EFI_SYSTEM_TABLE *mSystemTable);
+
+EFI_STATUS EFIAPI SlotMain(IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable)
+{
+ EFI_STATUS status;
+ EFI_HANDLE *controllerHandles = NULL;
+ UINTN handleIndex, numHandles;
+ EFI_DISK_IO_PROTOCOL *mDiskIoProtocol = NULL;
+ EFI_BLOCK_IO_PROTOCOL *mBlockIoProtocol = NULL;
+ UINT32 mMediaId;
+ UINT32 mBlockSize;
+ int index;
+ unsigned char currentSlotA[OP6T_SLOT_FLAG_SIZE];
+ unsigned char currentSlotB[OP6T_SLOT_FLAG_SIZE];
+ // list all Handles that installed DiskIoProtocol
+ status = SystemTable->BootServices->LocateHandleBuffer(ByProtocol,
+ &gEfiDiskIoProtocolGuid,
+ NULL,
+ &numHandles,
+ &controllerHandles);
+ if (EFI_ERROR(status)) {
+ WaitAnyKey(SystemTable);
+ return status;
+ }
+ // ergodic the handles
+ for (handleIndex = 0; handleIndex < numHandles; handleIndex++) {
+ // open DiskIoProtocol on target handle
+ status = SystemTable->BootServices->HandleProtocol(
+ controllerHandles[handleIndex],
+ &gEfiDiskIoProtocolGuid,
+ (VOID**)&mDiskIoProtocol);
+ unsigned char slotNameBuffer[OP6T_SLOT_BOOT_BUFFER_LEN];
+ if (EFI_ERROR(status))
+ continue;
+ // open BlockIoProtocol on target handle
+ status = SystemTable->BootServices->HandleProtocol(
+ controllerHandles[handleIndex],
+ &gEfiBlockIoProtocolGuid,
+ (VOID**)&mBlockIoProtocol);
+ if (EFI_ERROR(status)) {
+ continue;
+ } else {
+ // filter disk device by LogicalPartition
+ if (mBlockIoProtocol->Media->LogicalPartition)
+ continue;
+ SystemTable->ConOut->OutputString(SystemTable->ConOut, L"The media is disk.\n");
+ mMediaId = mBlockIoProtocol->Media->MediaId;
+ mBlockSize = mBlockIoProtocol->Media->BlockSize;
+ // read buffers from disk
+ status = mDiskIoProtocol->ReadDisk(
+ mDiskIoProtocol,
+ mMediaId,
+ 2 * mBlockSize + OP6T_SLOT_A_BOOT_BUFFER_LBA2_OFFSET,
+ OP6T_SLOT_BOOT_BUFFER_LEN,
+ slotNameBuffer);
+ if (EFI_ERROR(status))
+ continue;
+ // filter disk device by the name of boot partition
+ int i = 0;
+ for (index = 0; index < OP6T_SLOT_BOOT_BUFFER_LEN; index++) {
+ if (slotNameBuffer[index] != OP6T_SLOT_A_BOOT_BUFFER[index]) {
+ i = 1;
+ break;
+ }
+ }
+ if (i == 1)
+ continue;
+ SystemTable->ConOut->OutputString(SystemTable->ConOut, L"The name of target partition is matched.\n");
+ // read flag of slot A
+ status = mDiskIoProtocol->ReadDisk(
+ mDiskIoProtocol,
+ mMediaId,
+ 2 * mBlockSize + OP6T_SLOT_A_BOOT_FLAG_LBA2_OFFSET,
+ OP6T_SLOT_FLAG_SIZE,
+ currentSlotA);
+ if (EFI_ERROR(status))
+ return status;
+ // read flag of slot B
+ status = mDiskIoProtocol->ReadDisk(
+ mDiskIoProtocol,
+ mMediaId,
+ 3 * mBlockSize + OP6T_SLOT_B_BOOT_FLAG_LBA3_OFFSET,
+ OP6T_SLOT_FLAG_SIZE,
+ currentSlotB);
+ if (EFI_ERROR(status))
+ return status;
+
+ // analyze A/B flags
+ int flag_offset = 0;
+ if (currentSlotA[0] == OP6T_SLOT_FLAG_ACTIVE)
+ return EFI_SUCCESS;
+ else if (currentSlotA[0] == OP6T_SLOT_FLAG_UNBOOTABLE)
+ if (currentSlotB[0] == OP6T_SLOT_FLAG_ACTIVE)
+ return EFI_SUCCESS;
+ else if (currentSlotB[0] == OP6T_SLOT_FLAG_UNBOOTABLE)
+ flag_offset = 2 * mBlockSize + OP6T_SLOT_A_BOOT_FLAG_LBA2_OFFSET;
+ else
+ flag_offset = 3 * mBlockSize + OP6T_SLOT_B_BOOT_FLAG_LBA3_OFFSET;
+ else
+ flag_offset = 2 * mBlockSize + OP6T_SLOT_A_BOOT_FLAG_LBA2_OFFSET;
+
+
+ // write flag into disk
+ unsigned char f[1] = {OP6T_SLOT_FLAG_ACTIVE};
+ status = mDiskIoProtocol->WriteDisk(
+ mDiskIoProtocol,
+ mMediaId,
+ flag_offset,
+ OP6T_SLOT_FLAG_SIZE,
+ f);
+ if (EFI_ERROR(status)) {
+ SystemTable->ConOut->OutputString(SystemTable->ConOut, L"Failed to write flag into disk.\n");
+ continue;
+ } else {
+ SystemTable->ConOut->OutputString(SystemTable->ConOut, L"Succeed to write flag into disk.\n");
+ break;
+ }
+ }
+ }
+ //try to fix gpt crc32
+ if (mBlockIoProtocol != NULL) {
+ status = (FixGptCRC32(mBlockIoProtocol, mDiskIoProtocol, SystemTable));
+ if (EFI_ERROR(status))
+ SystemTable->ConOut->OutputString(SystemTable->ConOut, L"Failed to fix CRC32 value.\n");
+ else
+ SystemTable->ConOut->OutputString(SystemTable->ConOut, L"Succeed to fix CRC32 value.\n");
+ }
+
+ // release memory
+ if (controllerHandles != NULL)
+ SystemTable->BootServices->FreePool(controllerHandles);
+ //WaitAnyKey(SystemTable);
+ return EFI_SUCCESS;
+}
+
+void WaitAnyKey(EFI_SYSTEM_TABLE *mSystemTable) {
+ UINTN index = 0;
+ EFI_INPUT_KEY Key;
+ mSystemTable->BootServices->WaitForEvent(1, &mSystemTable->ConIn->WaitForKey, &index);
+ mSystemTable->ConIn->ReadKeyStroke(mSystemTable->ConIn, &Key);
+}
+
diff --git a/sdm845Pkg/Drivers/Op6tSlotDxe/slot.h b/sdm845Pkg/Drivers/Op6tSlotDxe/slot.h
new file mode 100644
index 0000000..f2a9a08
--- /dev/null
+++ b/sdm845Pkg/Drivers/Op6tSlotDxe/slot.h
@@ -0,0 +1,73 @@
+/*
+ * Op6tSlot Module
+ * Copyright (C) 2021 longjunyu
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see