#
# Copyright (c) 2020, Rockchip Electronics Co., Ltd.
# Written by Elon Zhang <zhangzj@rock-chips.com>
#
# SPDX-License-Identifier: GPL-2.0+
#
OP-TEE Client in U-Boot
==========================
OP-TEE Client in U-Boot is responsible for communication managerment
between Secure World(OP-TEE) and Non-Secure World(U-Boot).
Change Log
==========================
2020.8 Update OP-TEE message protocol
OP-TEE message protocol is updated from version 1 to version 2
on platform RK312x/RK322x/RK3288/RK3399/RK3399Pro/RK3368/RK3328/RK3228H.
This message protocol update involves some software component, including
OP-TEE(trust.img), U-Boot, Kernel, binary&library in Android/Linux.
The software component above **MUST** be consistent because OP-TEE message
protocol v1 and v2 are not compatible, otherwise TEE related function
will **NOT** work normally.
One Very Important Change:
MMU policy for share memory between REE and TEE
+-------+-----------------+----------------+
| arch | before update | after update |
+-------+-----------------+----------------+
| arm64 | dcache enabled | dcache enabled |
+-------+-----------------+----------------+
| arm | dcache disabled | dcache enabled |
+-------+-----------------+----------------+
Related commits are shown below:
1. rkbin
c20711e rk3036: tee: update optee version to v2.00
cb7d8f9 rk322x: tee with ta: update optee version to v2.11
4f9488e rk3128x: tee with ta: update optee version to v2.11
6d6473c rk312x: tee with ta: update optee version to v2.01
c0b025b rk3288: tee with ta: update optee version to v2.01
664ccee rk3228h/rk3328: bl32: update version to 2.01
6334115 rk3368: bl32: update version to 2.01
ccf1bef rk3399pro: bl32: update version to 2.01
8c01e53 rk3399: bl32: update version to 2.01
2. uboot
7a349fdcbd lib: optee_client: add optee initialize flag
74eb602743 lib: optee_client: update to new optee msg for optee v1 platform
102dfafc4a rochchip: board: map op-tee memory as dcache enabled
396e3049bd rochchip: board: only map op-tee share memory as dcache enabled
3. kernel
1) 4.19
90928381ffa9 ARM: dts: rockchip: add firmware and optee node
d752a21c0853 arm64: dts: rockchip: add firmware and optee node
c31ab35ad86d ARM: rockchip_defconfig: enable CONFIG_TEE and CONFIG_OPTEE
4. Android
1) Android 10
repo: android/rk/platform/vendor/rockchip/common
a515160d optee: v1 rebuild ca/ta to support new OP-TEE MSG
4fc68259 optee v1: arm&arm64: update tee-supplicant and libteec.so
a515160d optee: v1 rebuild ca/ta to support new OP-TEE MSG
repo: android/rk/hardware/rk29/weaver
26c9dd9b rebuild libRkTeeWeaver.v1.so for new OP-TEE MSG
5. Linux
repo: linux/security/bin
f59085c optee_v1: lib: arm&arm64: update binary and library
8f34c2760d