optee: FF-A: dynamic protected memory allocation

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Add support in the OP-TEE backend driver dynamic protected memory
allocation with FF-A.

The protected memory pools for dynamically allocated protected memory
are instantiated when requested by user-space. This instantiation can
fail if OP-TEE doesn't support the requested use-case of protected
memory.

Restricted memory pools based on a static carveout or dynamic allocation
can coexist for different use-cases. We use only dynamic allocation with
FF-A.

Reviewed-by: Sumit Garg <sumit.garg@oss.qualcomm.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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This commit is contained in:

Jens Wiklander 2025-08-13 08:02:57 +02:00

parent 0e32abef9f

commit 2b78d79cdf

4 changed files with 492 additions and 3 deletions

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1

drivers/tee/optee/Makefile

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146

drivers/tee/optee/ffa_abi.c

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13

drivers/tee/optee/optee_private.h

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335

drivers/tee/optee/protmem.c

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