diff options
| author | Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com> | 2023-08-04 16:33:41 +0300 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2023-08-08 17:22:03 +0300 |
| commit | a09852d862bc203b80368ca671ff36e80bcb510f (patch) | |
| tree | 5f998e272573c29fc5f83c9a9c5bac3d55c26fd5 /doc | |
| parent | 39d383bdace4b39b10665c7df2f1ef17399f6f1e (diff) | |
| download | u-boot-a09852d862bc203b80368ca671ff36e80bcb510f.tar.xz | |
arm_ffa: introduce sandbox FF-A support
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 <abdellatif.elkhlifi@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Cc: Jens Wiklander <jens.wiklander@linaro.org>
Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/arch/arm64.ffa.rst | 19 | ||||
| -rw-r--r-- | doc/arch/sandbox/sandbox.rst | 1 |
2 files changed, 18 insertions, 2 deletions
diff --git a/doc/arch/arm64.ffa.rst b/doc/arch/arm64.ffa.rst index df18948774..792898321a 100644 --- a/doc/arch/arm64.ffa.rst +++ b/doc/arch/arm64.ffa.rst @@ -33,6 +33,10 @@ The U-Boot FF-A support provides the following parts: - A Uclass driver providing generic FF-A methods. - An Arm FF-A device driver providing Arm-specific methods and reusing the Uclass methods. +- A sandbox emulator for Arm FF-A, emulates the FF-A side of the Secure World and provides + FF-A ABIs inspection methods. +- An FF-A sandbox device driver for FF-A communication with the emulated Secure World. + The driver leverages the FF-A Uclass to establish FF-A communication. FF-A and SMC specifications ------------------------------------------- @@ -62,6 +66,7 @@ CONFIG_ARM_FFA_TRANSPORT Enables the FF-A support. Turn this on if you want to use FF-A communication. When using an Arm 64-bit platform, the Arm FF-A driver will be used. + When using sandbox, the sandbox FF-A emulator and FF-A sandbox driver will be used. FF-A ABIs under the hood --------------------------------------- @@ -98,10 +103,8 @@ architecture features including FF-A bus. Class Index Probed Driver Name ----------------------------------------------------------- - ... firmware 0 [ + ] psci |-- psci ffa 0 [ ] arm_ffa | `-- arm_ffa - ... The PSCI driver is bound to the PSCI device and when probed it tries to discover the architecture features by calling a callback the features drivers provide. @@ -203,6 +206,18 @@ The following features are provided: - FF-A bus can be compiled and used without EFI +Relationship between the sandbox emulator and the FF-A device +--------------------------------------------------------------- + +:: + + => dm tree + + Class Index Probed Driver Name + ----------------------------------------------------------- + ffa_emul 0 [ + ] sandbox_ffa_emul `-- arm-ffa-emul + ffa 0 [ ] sandbox_arm_ffa `-- sandbox-arm-ffa + Example of boot logs with FF-A enabled -------------------------------------- diff --git a/doc/arch/sandbox/sandbox.rst b/doc/arch/sandbox/sandbox.rst index 77ca6bc4cc..a3631de749 100644 --- a/doc/arch/sandbox/sandbox.rst +++ b/doc/arch/sandbox/sandbox.rst @@ -200,6 +200,7 @@ Supported Drivers U-Boot sandbox supports these emulations: +- Arm FF-A - Block devices - Chrome OS EC - GPIO |