Tianocore/edk2.git/MdeModulePkg/Bus/Spi, branch dependabot/github_actions/github/codeql-action-4

MdeModulePkg/SpiNorFlashJedecSfdp: Initialize AddressSize

2025-06-13T15:47:59+00:00

Signed-off-by: Michael D Kinney

MdeModulePkg/SpiBus: Free handle buffers after LocateHandleBuffer

2025-06-12T14:09:13+00:00

Fix memory leaks by adding missing FreePool calls: release SpiHcHandles in SpiBusEntry exit path. REF: https://uefi.org/sites/default/files/resources/UEFI_Spec_Final_2.11.pdf Chapter 7.3.15: "Services - Boot Services.LocateHandleBuffer": It is the caller's responsibility to call the Boot Service.FreePool when the caller no longer requires the contents of Buffer. Signed-off-by: Dongyan Qian

MdeModulePkg/Spi: Allow NULL WriteBuffer in FillWriteBuffer()

2025-05-26T05:45:37+00:00

Fix false positive assert added in #10924 Functon `FillWriteBuffer()` should able to accept NULL WriteBuffer when WriteBytes equals 0. Use case: ``` // Read Status register TransactionBufferLength = FillWriteBuffer ( Instance, SPI_FLASH_RDSR, SPI_FLASH_RDSR_DUMMY, SPI_FLASH_RDSR_ADDR_BYTES, FALSE, 0, 0, // WriteBytes = 0 NULL // WriteBuffer can be NULL ); ``` Signed-off-by: Paddy Deng

MdeModulePkg/Spi: Solving potential null ptr deref. in SpiNorFlashJedecSfdp

2025-05-05T06:26:16+00:00

The pointer `Instance->SfdpBasicFlash` can be used before initializing. Example code flow: - CreateSpiNorFlashSfdpInstance: Allocate pool for `Instance` - InitialSpiNorFlashSfdpInstance - ReadSfdp - ReadSfdpHeader - FillWriteBuffer: Dereferencing `Instance->SfdpBasicFlash` - ReadSfdpBasicParameterTable: Allocate pool for `Instance->SfdpBasicFlash` Check both `Instance` and `Instance->SfdpBasicFlash` should have a non null value before dereferencing it. Otherwise use the defaut value 0. Also terminate the function if `Instance` or `WriteBuffer` is NULL. Signed-off-by: Paddy Deng

MdeModulePkg SpiBus: Use correct GUID

2025-04-30T06:55:42+00:00

Fix incorrect guid in SpiBusDxe and add null checking for AllocateZeroPool in the SpiBus driver. Signed-off-by: Jack Hsieh

MdeModulePkg: SpiHc: SpiHc Drivers

2024-05-08T04:43:58+00:00

Added SpiHc DXE and SMM drivers. This code receives bus transactions from the SpiBus layer and passes them onto the SpiHcPlatformLib Platform Initialization Spec 1.7 volume 5 section 18.1.7 Bugzilla #4753 Cc: Abner Chang Cc: Abdul Lateef Attar Signed-off-by: Brit Chesley Reviewed-by: Abner Chang

MdeModulePkg/Bus/Spi/SpiBus: Adding SpiBus Drivers

2024-05-08T04:43:58+00:00

Added SpiBus DXE and SMM drivers. This code translates SPI requests from the application layer into SPI Bus transactions on the SPI host controller. The code is responsible for checking if the transaction is valid, then setting up the SPI clock and chip select properly before passing the bus transaction to the host controller. Platform Initialization Spec 1.7 volume 5 section 18.1.6 Bugzilla #4753 Cc: Abner Chang Cc: Abdul Lateef Attar Signed-off-by: Brit Chesley Reviewed-by: Abner Chang

MdeModulePkg/SpiNorFlashJedecSfdp: SPI NOR Flash JEDEC SFDP

2024-04-20T08:26:40+00:00

BZ#: 4471 SPI NOR Flash JEDEC Serial Flash Discoverable Driver implementation. Signed-off-by: Abner Chang Cc: Hao A Wu Cc: Ray Ni Cc: Abdul Lateef Attar Cc: Brit Chesley Reviewed-by: Liming Gao