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This patch adds support for Total Compute (TC0) platform. It is an initial port and additional features are expected to be added later. TC0 has a SCP which brings the primary Cortex-A out of reset which starts executing BL1. TF-A optionally authenticates the SCP ram-fw available in FIP and makes it available for SCP to copy. Some of the major features included and tested in this platform port include TBBR, PSCI, MHUv2 and DVFS. Change-Id: I1675e9d200ca7687c215009eef483d9b3ee764ef Signed-off-by: Usama Arif <usama.arif@arm.com>
50 lines
1.7 KiB
ReStructuredText
50 lines
1.7 KiB
ReStructuredText
TC0 Total Compute Platform
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==========================
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Some of the features of TC0 platform referenced in TF-A include:
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- A `System Control Processor <https://github.com/ARM-software/SCP-firmware>`_
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to abstract power and system management tasks away from application
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processors. The RAM firmware for SCP is included in the TF-A FIP and is
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loaded by AP BL2 from FIP in flash to SRAM for copying by SCP (SCP has access
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to AP SRAM).
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- GICv4
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- Trusted Board Boot
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- SCMI
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- MHUv2
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Boot Sequence
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-------------
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The execution begins from SCP_BL1. SCP_BL1 powers up the AP which starts
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executing AP_BL1 and then executes AP_BL2 which loads the SCP_BL2 from
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FIP to SRAM. The SCP has access to AP SRAM. The address and size of SCP_BL2
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is communicated to SCP using SDS. SCP copies SCP_BL2 from SRAM to its own
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RAM and starts executing it. The AP then continues executing the rest of TF-A
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stages including BL31 runtime stage and hands off executing to
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Non-secure world (u-boot).
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Build Procedure (TF-A only)
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~~~~~~~~~~~~~~~~~~~~~~~~~~~
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- Obtain arm `toolchain <https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-a/downloads>`_.
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Set the CROSS_COMPILE environment variable to point to the toolchain folder.
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- Build TF-A:
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.. code:: shell
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make PLAT=tc0 BL33=<path_to_uboot.bin> \
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SCP_BL2=<path_to_scp_ramfw.bin> all fip
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Enable TBBR by adding the following options to the make command:
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.. code:: shell
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MBEDTLS_DIR=<path_to_mbedtls_directory> \
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TRUSTED_BOARD_BOOT=1 \
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GENERATE_COT=1 \
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ARM_ROTPK_LOCATION=devel_rsa \
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ROT_KEY=plat/arm/board/common/rotpk/arm_rotprivk_rsa.pem
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*Copyright (c) 2020, Arm Limited. All rights reserved.*
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