1ARM Trusted Firmware 2==================== 3 4Detailed changes since last release 5----------------------------------- 6 7* Support for Foundation FVP Version 2.0 added. 8 The documented UEFI configuration disables some devices that are unavailable 9 in the Foundation FVP, including MMC and CLCD. The resultant UEFI binary can 10 be used on the AEMv8 and Cortex-A57-A53 FVPs, as well as the Foundation FVP. 11 NOTE: The software will not work on Version 1.0 of the Foundation FVP. 12 13* Regression-checked against latest Base FVPs (Version 5.2). 14 15* The supplied FDTs expose the Interrupt Translation Service (ITS) available 16 in GICv3. 17 18* Fixed various GCC compiler warnings. 19 20 21ARM Trusted Firmware - version 0.2 22================================== 23 24New features 25------------ 26 27* First source release. 28 29* Code for the PSCI suspend feature is supplied, although this is not enabled 30 by default since there are known issues (see below). 31 32 33Issues resolved since last release 34---------------------------------- 35 36* The "psci" nodes in the FDTs provided in this release now fully comply 37 with the recommendations made in the PSCI specification. 38 39 40Known issues 41------------ 42 43The following is a list of issues which are expected to be fixed in the future 44releases of the ARM Trusted Firmware. 45 46* The TrustZone Address Space Controller (TZC-400) is not being programmed 47 yet. Use of model parameter `-C bp.secure_memory=1` is not supported. 48 49* No support yet for secure world interrupt handling or for switching context 50 between secure and normal worlds in EL3. 51 52* GICv3 support is experimental. The Linux kernel patches to support this are 53 not widely available. There are known issues with GICv3 initialization in 54 the ARM Trusted Firmware. 55 56* Dynamic image loading is not available yet. The current image loader 57 implementation (used to load BL2 and all subsequent images) has some 58 limitations. Changing BL2 or BL3-1 load addresses in certain ways can lead 59 to loading errors, even if the images should theoretically fit in memory. 60 61* Although support for PSCI `CPU_SUSPEND` is present, it is not yet stable 62 and ready for use. 63 64* PSCI API calls `AFFINITY_INFO` & `PSCI_VERSION` are implemented but have not 65 been tested. 66 67* The ARM Trusted Firmware make files result in all build artifacts being 68 placed in the root of the project. These should be placed in appropriate 69 sub-directories. 70 71* The compilation of ARM Trusted Firmware is not free from compilation 72 warnings. Some of these warnings have not been investigated yet so they 73 could mask real bugs. 74 75* The ARM Trusted Firmware currently uses toolchain/system include files like 76 stdio.h. It should provide versions of these within the project to maintain 77 compatibility between toolchains/systems. 78 79* The PSCI code takes some locks in an incorrect sequence. This may cause 80 problems with suspend and hotplug in certain conditions. 81 82* The Linux kernel used in this release is based on version 3.12-rc4. Using 83 this kernel with the ARM Trusted Firmware fails to start the file-system as 84 a RAM-disk. It fails to execute user-space `init` from the RAM-disk. As an 85 alternative, the VirtioBlock mechanism can be used to provide a file-system 86 to the kernel. 87 88 89Detailed changes since last release 90----------------------------------- 91 92First source release – not applicable. 93 94- - - - - - - - - - - - - - - - - - - - - - - - - - 95 96_Copyright (c) 2013 ARM Ltd. All rights reserved._ 97