Some STM32MP1‐based boards, like Seeed Studio’s SoM‐STM32MP157C, have the SoC connected to the PMIC via I2C2 instead of I2C4 (which is used on the official ST development boards). This commit brings TF‑A one step closer to boot on such boards. The pins used, PH4 and PH5, are described in a new pinctrl node named “i2c2-0”, AKA phandle “i2c2_pins_a”. These names are identical to their Linux kernel counterparts (commit 7af08140979a6e7e12b78c93b8625c8d25b084e2). Signed-off-by: Grzegorz Szymaszek <gszymaszek@short.pl> Change-Id: Ief6f0a632cfa992dcf3fed95d266ad6a07a96fe0 |
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bl1 | ||
bl2 | ||
bl2u | ||
bl31 | ||
bl32 | ||
common | ||
docs | ||
drivers | ||
fdts | ||
include | ||
lib | ||
make_helpers | ||
plat | ||
services | ||
tools | ||
.checkpatch.conf | ||
.editorconfig | ||
.gitignore | ||
.gitreview | ||
Makefile | ||
dco.txt | ||
license.rst | ||
readme.rst |
readme.rst
Trusted Firmware-A
Trusted Firmware-A (TF-A) is a reference implementation of secure world software for Arm A-Profile architectures (Armv8-A and Armv7-A), including an Exception Level 3 (EL3) Secure Monitor. It provides a suitable starting point for productization of secure world boot and runtime firmware, in either the AArch32 or AArch64 execution states.
TF-A implements Arm interface standards, including:
- Power State Coordination Interface (PSCI)
- Trusted Board Boot Requirements CLIENT (TBBR-CLIENT)
- SMC Calling Convention
- System Control and Management Interface (SCMI)
- Software Delegated Exception Interface (SDEI)
The code is designed to be portable and reusable across hardware platforms and software models that are based on the Armv8-A and Armv7-A architectures.
In collaboration with interested parties, we will continue to enhance TF-A with reference implementations of Arm standards to benefit developers working with Armv7-A and Armv8-A TrustZone technology.
Users are encouraged to do their own security validation, including penetration testing, on any secure world code derived from TF-A.
More Info and Documentation
To find out more about Trusted Firmware-A, please view the full documentation that is available through trustedfirmware.org.
Copyright (c) 2013-2019, Arm Limited and Contributors. All rights reserved.