u-boot/include/tee/optee_ta_avb.h
Igor Opaniuk fc1fe01b08 avb: add support for named persistent values
AVB 2.0 spec. revision 1.1 introduces support for named persistent values
that must be tamper evident and allows AVB to store arbitrary key-value
pairs [1].

Introduce implementation of two additional AVB operations
read_persistent_value()/write_persistent_value() for retrieving/storing
named persistent values.

Correspondent pull request in the OP-TEE OS project repo [2].

[1]: https://android.googlesource.com/platform/external/avb/+/android-9.0.0_r22
[2]: https://github.com/OP-TEE/optee_os/pull/2699

Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Igor Opaniuk <igor.opaniuk@gmail.com>
2019-04-26 18:58:22 -04:00

64 lines
1.7 KiB
C

/* SPDX-License-Identifier: BSD-2-Clause */
/* Copyright (c) 2018, Linaro Limited */
#ifndef __TA_AVB_H
#define __TA_AVB_H
#define TA_AVB_UUID { 0x023f8f1a, 0x292a, 0x432b, \
{ 0x8f, 0xc4, 0xde, 0x84, 0x71, 0x35, 0x80, 0x67 } }
#define TA_AVB_MAX_ROLLBACK_LOCATIONS 256
/*
* Gets the rollback index corresponding to the given rollback index slot.
*
* in params[0].value.a: rollback index slot
* out params[1].value.a: upper 32 bits of rollback index
* out params[1].value.b: lower 32 bits of rollback index
*/
#define TA_AVB_CMD_READ_ROLLBACK_INDEX 0
/*
* Updates the rollback index corresponding to the given rollback index slot.
*
* Will refuse to update a slot with a lower value.
*
* in params[0].value.a: rollback index slot
* in params[1].value.a: upper 32 bits of rollback index
* in params[1].value.b: lower 32 bits of rollback index
*/
#define TA_AVB_CMD_WRITE_ROLLBACK_INDEX 1
/*
* Gets the lock state of the device.
*
* out params[0].value.a: lock state
*/
#define TA_AVB_CMD_READ_LOCK_STATE 2
/*
* Sets the lock state of the device.
*
* If the lock state is changed all rollback slots will be reset to 0
*
* in params[0].value.a: lock state
*/
#define TA_AVB_CMD_WRITE_LOCK_STATE 3
/*
* Reads a persistent value corresponding to the given name.
*
* in params[0].u.memref: persistent value name
* out params[1].u.memref: read persistent value buffer
*/
#define TA_AVB_CMD_READ_PERSIST_VALUE 4
/*
* Writes a persistent value corresponding to the given name.
*
* in params[0].u.memref: persistent value name
* in params[1].u.memref: persistent value buffer to write
*/
#define TA_AVB_CMD_WRITE_PERSIST_VALUE 5
#endif /* __TA_AVB_H */