| James Morrissey | ba3155b | 2013-10-29 10:56:46 +0000 | [diff] [blame] | 1 | ARM Trusted Firmware |
| 2 | ==================== |
| Harry Liebel | cff4e29 | 2013-11-05 18:00:38 +0000 | [diff] [blame] | 3 | |
| 4 | Detailed changes since last release |
| 5 | ----------------------------------- |
| 6 | |
| James Morrissey | ba3155b | 2013-10-29 10:56:46 +0000 | [diff] [blame] | 7 | * Support for Foundation FVP Version 2.0 added. |
| Harry Liebel | cff4e29 | 2013-11-05 18:00:38 +0000 | [diff] [blame] | 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. |
| James Morrissey | ba3155b | 2013-10-29 10:56:46 +0000 | [diff] [blame] | 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. |
| Harry Liebel | cff4e29 | 2013-11-05 18:00:38 +0000 | [diff] [blame] | 17 | |
| Sandrine Bailleux | 204aa03 | 2013-10-28 15:14:00 +0000 | [diff] [blame] | 18 | * Fixed various GCC compiler warnings. |
| 19 | |
| Sandrine Bailleux | 3738274 | 2013-11-18 17:26:59 +0000 | [diff] [blame] | 20 | * Unmask SError and Debug exceptions in the trusted firmware. |
| 21 | Also route external abort and SError interrupts to EL3. |
| 22 | |
| Harry Liebel | 375ae68 | 2013-11-18 16:05:21 +0000 | [diff] [blame] | 23 | * The amount of physical RAM available to Linux as specified in the FDTs for |
| 24 | Base FVPs have been increased from 2GB to 4GB. This resolves the issue of |
| 25 | failing to start user-space when using a RAM-disk file-system. |
| 26 | |
| James Morrissey | eaaeece | 2013-11-01 13:56:59 +0000 | [diff] [blame] | 27 | * Build products are now created in a separate build directory tree. |
| 28 | |
| Harry Liebel | cff4e29 | 2013-11-05 18:00:38 +0000 | [diff] [blame] | 29 | |
| Achin Gupta | 4f6ad66 | 2013-10-25 09:08:21 +0100 | [diff] [blame] | 30 | ARM Trusted Firmware - version 0.2 |
| 31 | ================================== |
| 32 | |
| 33 | New features |
| 34 | ------------ |
| 35 | |
| 36 | * First source release. |
| 37 | |
| 38 | * Code for the PSCI suspend feature is supplied, although this is not enabled |
| 39 | by default since there are known issues (see below). |
| 40 | |
| 41 | |
| 42 | Issues resolved since last release |
| 43 | ---------------------------------- |
| 44 | |
| 45 | * The "psci" nodes in the FDTs provided in this release now fully comply |
| 46 | with the recommendations made in the PSCI specification. |
| 47 | |
| 48 | |
| 49 | Known issues |
| 50 | ------------ |
| 51 | |
| 52 | The following is a list of issues which are expected to be fixed in the future |
| 53 | releases of the ARM Trusted Firmware. |
| 54 | |
| 55 | * The TrustZone Address Space Controller (TZC-400) is not being programmed |
| 56 | yet. Use of model parameter `-C bp.secure_memory=1` is not supported. |
| 57 | |
| 58 | * No support yet for secure world interrupt handling or for switching context |
| 59 | between secure and normal worlds in EL3. |
| 60 | |
| 61 | * GICv3 support is experimental. The Linux kernel patches to support this are |
| 62 | not widely available. There are known issues with GICv3 initialization in |
| 63 | the ARM Trusted Firmware. |
| 64 | |
| 65 | * Dynamic image loading is not available yet. The current image loader |
| 66 | implementation (used to load BL2 and all subsequent images) has some |
| 67 | limitations. Changing BL2 or BL3-1 load addresses in certain ways can lead |
| 68 | to loading errors, even if the images should theoretically fit in memory. |
| 69 | |
| 70 | * Although support for PSCI `CPU_SUSPEND` is present, it is not yet stable |
| 71 | and ready for use. |
| 72 | |
| James Morrissey | ba3155b | 2013-10-29 10:56:46 +0000 | [diff] [blame] | 73 | * PSCI API calls `AFFINITY_INFO` & `PSCI_VERSION` are implemented but have not |
| Achin Gupta | 4f6ad66 | 2013-10-25 09:08:21 +0100 | [diff] [blame] | 74 | been tested. |
| 75 | |
| 76 | * The ARM Trusted Firmware make files result in all build artifacts being |
| 77 | placed in the root of the project. These should be placed in appropriate |
| 78 | sub-directories. |
| 79 | |
| 80 | * The compilation of ARM Trusted Firmware is not free from compilation |
| 81 | warnings. Some of these warnings have not been investigated yet so they |
| 82 | could mask real bugs. |
| 83 | |
| 84 | * The ARM Trusted Firmware currently uses toolchain/system include files like |
| 85 | stdio.h. It should provide versions of these within the project to maintain |
| 86 | compatibility between toolchains/systems. |
| 87 | |
| 88 | * The PSCI code takes some locks in an incorrect sequence. This may cause |
| 89 | problems with suspend and hotplug in certain conditions. |
| 90 | |
| 91 | * The Linux kernel used in this release is based on version 3.12-rc4. Using |
| 92 | this kernel with the ARM Trusted Firmware fails to start the file-system as |
| 93 | a RAM-disk. It fails to execute user-space `init` from the RAM-disk. As an |
| 94 | alternative, the VirtioBlock mechanism can be used to provide a file-system |
| 95 | to the kernel. |
| 96 | |
| 97 | |
| 98 | Detailed changes since last release |
| 99 | ----------------------------------- |
| 100 | |
| 101 | First source release – not applicable. |
| 102 | |
| 103 | - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 104 | |
| 105 | _Copyright (c) 2013 ARM Ltd. All rights reserved._ |