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- TC Total Compute Platform
- ==========================
- Some of the features of TC platform referenced in TF-A include:
- - A `System Control Processor <https://github.com/ARM-software/SCP-firmware>`_
- to abstract power and system management tasks away from application
- processors. The RAM firmware for SCP is included in the TF-A FIP and is
- loaded by AP BL2 from FIP in flash to SRAM for copying by SCP (SCP has access
- to AP SRAM).
- - GICv4
- - Trusted Board Boot
- - SCMI
- - MHUv2
- The TF-A build is specified by the option `TARGET_PLATFORM` which represents
- the Total Compute platform number. The platforms support the CPU variants
- listed as below:
- - TC0 has support for Cortex A510, Cortex A710 and Cortex X2. (Note TC0 is now deprecated)
- - TC1 has support for Cortex A510, Cortex A715 and Cortex X3. (Note TC1 is now deprecated)
- - TC2 has support for Cortex A520, Cortex A720 and Cortex x4. (Note TC2 is now deprecated)
- - TC3 has support for Cortex A520, Cortex A725 and Cortex x925.
- Boot Sequence
- -------------
- The execution begins from SCP_BL1. SCP_BL1 powers up the AP which starts
- executing AP_BL1 and then executes AP_BL2 which loads the SCP_BL2 from
- FIP to SRAM. The SCP has access to AP SRAM. The address and size of SCP_BL2
- is communicated to SCP using SDS. SCP copies SCP_BL2 from SRAM to its own
- RAM and starts executing it. The AP then continues executing the rest of TF-A
- stages including BL31 runtime stage and hands off executing to
- Non-secure world (u-boot).
- Build Procedure (TF-A only)
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~
- - Obtain `Arm toolchain`_ and set the CROSS_COMPILE environment variable to
- point to the toolchain folder.
- - Build TF-A:
- .. code:: shell
- make PLAT=tc BL33=<path_to_uboot.bin> \
- SCP_BL2=<path_to_scp_ramfw.bin> TARGET_PLATFORM={3} all fip
- Enable TBBR by adding the following options to the make command:
- .. code:: shell
- MBEDTLS_DIR=<path_to_mbedtls_directory> \
- TRUSTED_BOARD_BOOT=1 \
- GENERATE_COT=1 \
- ARM_ROTPK_LOCATION=devel_rsa \
- ROT_KEY=plat/arm/board/common/rotpk/arm_rotprivk_rsa.pem
- --------------
- *Copyright (c) 2020-2023, Arm Limited. All rights reserved.*
- .. _Arm Toolchain: https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/downloads
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