u-boot.git/doc/arch, branch v2024.01-rc2

sandbox: Move the bloblist down a little in memory

2023-10-06T18:38:13Z

Move this down by 4KB so that it is large enough to hold the devicetree. Also fix up the devicetree address in the documetation while we are here. Signed-off-by: Simon Glass

x86: doc: Split out manual booting into its own file

2023-09-21T22:05:40Z

Move this out of the main file since for simple users it is easier to rely on standard boot. Signed-off-by: Simon Glass Reviewed-by: Bin Meng

x86: doc: Update summaries and add links

2023-09-21T22:05:40Z

Refresh the summary information so it is more up-to-date. Add links to the coreboot and slimbootloader docs. Signed-off-by: Simon Glass Reviewed-by: Bin Meng

x86: doc: Move into its own directory

2023-09-21T22:05:40Z

There is enough material that it makes sense to split this up into several files. Create an x86/ directory for this purpose. Signed-off-by: Simon Glass Reviewed-by: Bin Meng

x86: doc: Update the list of supported Chromebooks

2023-09-21T22:03:46Z

One is missing, so add it. Also mention the SoC used in each. Signed-off-by: Simon Glass Reviewed-by: Bin Meng

arm_ffa: use debug logs

2023-08-17T16:29:21Z

replace info logs with debug logs Signed-off-by: Abdellatif El Khlifi Cc: Tom Rini Cc: Simon Glass Reviewed-by: Simon Glass

arm_ffa: introduce armffa command

2023-08-08T14:22:03Z

Provide armffa command showcasing the use of the U-Boot FF-A support armffa is a command showcasing how to invoke FF-A operations. This provides a guidance to the client developers on how to call the FF-A bus interfaces. The command also allows to gather secure partitions information and ping these partitions. The command is also helpful in testing the communication with secure partitions. For more details please refer to the command documentation [1]. A Sandbox test is provided for the armffa command. [1]: doc/usage/cmd/armffa.rst Signed-off-by: Abdellatif El Khlifi Reviewed-by: Simon Glass Cc: Tom Rini Cc: Ilias Apalodimas Cc: Jens Wiklander Cc: Heinrich Schuchardt

arm_ffa: introduce sandbox test cases for UCLASS_FFA

2023-08-08T14:22:03Z

Add functional test cases for the FF-A support These tests rely on the FF-A sandbox emulator and FF-A sandbox driver which help in inspecting the FF-A communication. Signed-off-by: Abdellatif El Khlifi Reviewed-by: Simon Glass Cc: Tom Rini Cc: Ilias Apalodimas Cc: Jens Wiklander Cc: Heinrich Schuchardt

arm_ffa: introduce sandbox FF-A support

2023-08-08T14:22:03Z

Emulate Secure World's FF-A ABIs and allow testing U-Boot FF-A support Features of the sandbox FF-A support: - Introduce an FF-A emulator - Introduce an FF-A device driver for FF-A comms with emulated Secure World - Provides test methods allowing to read the status of the inspected ABIs The sandbox FF-A emulator supports only 64-bit direct messaging. Signed-off-by: Abdellatif El Khlifi Reviewed-by: Simon Glass Cc: Tom Rini Cc: Ilias Apalodimas Cc: Jens Wiklander Cc: Heinrich Schuchardt

arm_ffa: introduce Arm FF-A support

2023-08-08T14:22:03Z

Add Arm FF-A support implementing Arm Firmware Framework for Armv8-A v1.0 The Firmware Framework for Arm A-profile processors (FF-A v1.0) [1] describes interfaces (ABIs) that standardize communication between the Secure World and Normal World leveraging TrustZone technology. This driver uses 64-bit registers as per SMCCCv1.2 spec and comes on top of the SMCCC layer. The driver provides the FF-A ABIs needed for querying the FF-A framework from the secure world. The driver uses SMC32 calling convention which means using the first 32-bit data of the Xn registers. All supported ABIs come with their 32-bit version except FFA_RXTX_MAP which has 64-bit version supported. Both 32-bit and 64-bit direct messaging are supported which allows both 32-bit and 64-bit clients to use the FF-A bus. FF-A is a discoverable bus and similar to architecture features. FF-A bus is discovered using ARM_SMCCC_FEATURES mechanism performed by the PSCI driver. Clients are able to probe then use the FF-A bus by calling the DM class searching APIs (e.g: uclass_first_device). The Secure World is considered as one entity to communicate with using the FF-A bus. FF-A communication is handled by one device and one instance (the bus). This FF-A driver takes care of all the interactions between Normal world and Secure World. The driver exports its operations to be used by upper layers. Exported operations: - ffa_partition_info_get - ffa_sync_send_receive - ffa_rxtx_unmap Generic FF-A methods are implemented in the Uclass (arm-ffa-uclass.c). Arm specific methods are implemented in the Arm driver (arm-ffa.c). For more details please refer to the driver documentation [2]. [1]: https://developer.arm.com/documentation/den0077/latest/ [2]: doc/arch/arm64.ffa.rst Signed-off-by: Abdellatif El Khlifi Reviewed-by: Simon Glass Reviewed-by: Ilias Apalodimas Cc: Tom Rini Cc: Jens Wiklander Cc: Heinrich Schuchardt