1TC Total Compute Platform
2==========================
3
4Some of the features of TC platform referenced in TF-A include:
5
6- A `System Control Processor <https://github.com/ARM-software/SCP-firmware>`_
7  to abstract power and system management tasks away from application
8  processors. The RAM firmware for SCP is included in the TF-A FIP and is
9  loaded by AP BL2 from FIP in flash to SRAM for copying by SCP (SCP has access
10  to AP SRAM).
11- GICv4
12- Trusted Board Boot
13- SCMI
14- MHUv2
15
16Currently, the main difference between TC0 (TARGET_PLATFORM=0), TC1
17(TARGET_PLATFORM=1), TC2 (TARGET_PLATFORM=2) platforms w.r.t to TF-A
18is the CPUs supported as below:
19
20-  TC0 has support for Cortex A510, Cortex A710 and Cortex X2. (Note TC0 is now deprecated)
21-  TC1 has support for Cortex A510, Cortex A715 and Cortex X3. (Note TC1 is now deprecated)
22-  TC2 has support for Cortex A520, Cortex A720 and Cortex x4.
23
24Boot Sequence
25-------------
26
27The execution begins from SCP_BL1. SCP_BL1 powers up the AP which starts
28executing AP_BL1 and then executes AP_BL2 which loads the SCP_BL2 from
29FIP to SRAM. The SCP has access to AP SRAM. The address and size of SCP_BL2
30is communicated to SCP using SDS. SCP copies SCP_BL2 from SRAM to its own
31RAM and starts executing it. The AP then continues executing the rest of TF-A
32stages including BL31 runtime stage and hands off executing to
33Non-secure world (u-boot).
34
35Build Procedure (TF-A only)
36~~~~~~~~~~~~~~~~~~~~~~~~~~~
37
38-  Obtain `Arm toolchain`_ and set the CROSS_COMPILE environment variable to
39   point to the toolchain folder.
40
41-  Build TF-A:
42
43   .. code:: shell
44
45      make PLAT=tc BL33=<path_to_uboot.bin> \
46      SCP_BL2=<path_to_scp_ramfw.bin> TARGET_PLATFORM={0,1,2} all fip
47
48   Enable TBBR by adding the following options to the make command:
49
50   .. code:: shell
51
52      MBEDTLS_DIR=<path_to_mbedtls_directory>  \
53      TRUSTED_BOARD_BOOT=1 \
54      GENERATE_COT=1 \
55      ARM_ROTPK_LOCATION=devel_rsa  \
56      ROT_KEY=plat/arm/board/common/rotpk/arm_rotprivk_rsa.pem
57
58--------------
59
60*Copyright (c) 2020-2023, Arm Limited. All rights reserved.*
61
62.. _Arm Toolchain: https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/downloads
63