34dd1e96fd
The patch fixes BL31 linker script error "Init code ends past the end of the stacks" for platforms with number of CPUs less than 4, which is caused by __STACKS_END__ address being lower than __INIT_CODE_END__. The modified BL31 linker script detects such cases and increases the total amount of stack memory, setting __STACKS_END__ = __INIT_CODE_END__, and CPUs' stacks are calculated by BL31 'plat_get_my_stack' function accordingly. For platforms with more than 4 CPUs and __INIT_CODE_END__ < __STACKS_END__ stack memory does not increase and allocated CPUs' stacks match the existing implementation. The patch removes exclusion of PSCI initialization functions from the reclaimed .init section in 'arm_reclaim_init.ld.S' script, which increases the size of reclaimed memory region. Change-Id: I927773e00dd84e1ffe72f9ee534f4f2fc7b6153c Signed-off-by: Alexei Fedorov <Alexei.Fedorov@arm.com> |
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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.