tee_param Struct Reference

Tee parameter. More...

#include <tee.h>

Data Fields
uint64_t	attr
	attributes
uint64_t	a
	if a memref, offset into the shared memory object, else a value
uint64_t	b
	if a memref, size of the buffer, else a value parameter
uint64_t	c
	if a memref, shared memory identifier, else a value parameter

Detailed Description

Tee parameter.

attr & TEE_PARAM_ATTR_TYPE_MASK indicates if memref or value is used in the union. TEE_PARAM_ATTR_TYPE_VALUE_* indicates value and TEE_PARAM_ATTR_TYPE_MEMREF_* indicates memref. TEE_PARAM_ATTR_TYPE_NONE indicates that none of the members are used.

Shared memory is allocated with TEE_IOC_SHM_ALLOC which returns an identifier representing the shared memory object. A memref can reference a part of a shared memory by specifying an offset (a) and size (b) of the object. To supply the entire shared memory object set the offset (a) to 0 and size (b) to the previously returned size of the object.

Field Documentation

a

uint64_t tee_param::a

if a memref, offset into the shared memory object, else a value

attr

uint64_t tee_param::attr

attributes

b

uint64_t tee_param::b

if a memref, size of the buffer, else a value parameter

c

uint64_t tee_param::c

if a memref, shared memory identifier, else a value parameter

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The documentation for this struct was generated from the following file:

• include/zephyr/drivers/tee.h