bcm63xx/atf/lib/xlat_tables_v2, branch master

xlat_table_v2: Fix enable WARMBOOT_ENABLE_DCACHE_EARLY config

2019-10-18T09:26:34Z

The WARMBOOT_ENABLE_DCACHE_EARLY allows caches to be turned on early during the boot. But the xlat_change_mem_attributes_ctx() API did not do the required cache maintenance after the mmap tables are modified if WARMBOOT_ENABLE_DCACHE_EARLY is enabled. This meant that when the caches are turned off during power down, the tables in memory are accessed as part of cache maintenance for power down, and the tables are not correct at this point which results in a data abort. This patch removes the optimization within xlat_change_mem_attributes_ctx() when WARMBOOT_ENABLE_DCACHE_EARLY is enabled. Signed-off-by: Artsem Artsemenka Change-Id: I82de3decba87dd13e9856b5f3620a1c8571c8d87

Switch AARCH32/AARCH64 to aarch64

2019-08-01T20:45:03Z

NOTE: AARCH32/AARCH64 macros are now deprecated in favor of __aarch64__. All common C compilers pre-define the same macros to signal which architecture the code is being compiled for: __arm__ for AArch32 (or earlier versions) and __aarch64__ for AArch64. There's no need for TF-A to define its own custom macros for this. In order to unify code with the export headers (which use __aarch64__ to avoid another dependency), let's deprecate the AARCH32 and AARCH64 macros and switch the code base over to the pre-defined standard macro. (Since it is somewhat unintuitive that __arm__ only means AArch32, let's standardize on only using __aarch64__.) Change-Id: Ic77de4b052297d77f38fc95f95f65a8ee70cf200 Signed-off-by: Julius Werner

Add support for Branch Target Identification

2019-05-24T13:44:45Z

This patch adds the functionality needed for platforms to provide Branch Target Identification (BTI) extension, introduced to AArch64 in Armv8.5-A by adding BTI instruction used to mark valid targets for indirect branches. The patch sets new GP bit [50] to the stage 1 Translation Table Block and Page entries to denote guarded EL3 code pages which will cause processor to trap instructions in protected pages trying to perform an indirect branch to any instruction other than BTI. BTI feature is selected by BRANCH_PROTECTION option which supersedes the previous ENABLE_PAUTH used for Armv8.3-A Pointer Authentication and is disabled by default. Enabling BTI requires compiler support and was tested with GCC versions 9.0.0, 9.0.1 and 10.0.0. The assembly macros and helpers are modified to accommodate the BTI instruction. This is an experimental feature. Note. The previous ENABLE_PAUTH build option to enable PAuth in EL3 is now made as an internal flag and BRANCH_PROTECTION flag should be used instead to enable Pointer Authentication. Note. USE_LIBROM=1 option is currently not supported. Change-Id: Ifaf4438609b16647dc79468b70cd1f47a623362e Signed-off-by: Alexei Fedorov

SPM: Move shim layer to TTBR1_EL1

2019-04-03T09:51:31Z

This gives each Secure Partition complete freedom on its address space. Previously, the memory used by the exception vectors was reserved and couldn't be used. Also, it always had to be mapped, forcing SPM to generate translation tables that included the exception vectors as well as the Partition memory regions. With this change, partitions can reduce their address space size easily. Change-Id: I67fb5e9bdf2870b73347f23bff702fab0a8f8711 Signed-off-by: Antonio Nino Diaz

xlat_tables_v2: Revert recent changes to remove recursion

2019-03-19T14:56:00Z

This commit reverts the following commits: - c54c7fc35842 ("xlat_tables_v2: print xlat tables without recursion") - db8cac2d986a ("xlat_tables_v2: unmap region without recursion.") - 0ffe269215bd ("xlat_tables_v2: map region without recursion.") This was part of PR#1843. A problem has been detected in one of our test run configurations involving dynamic mapping of regions and it is blocking the next release. Until the problem can be solved, it is safer to revert the changes. Change-Id: I3d5456e4dbebf291c8b74939c6fb02a912e0903b Signed-off-by: Antonio Nino Diaz

xlat_tables_v2: print xlat tables without recursion

2019-03-05T17:21:39Z

This patch uses an array on stack to save parent xlat table information when traversing the xlat tables. It keeps exactly same xlat table traversal order compared to recursive version. fixes arm-software/tf-issues#664 Signed-off-by: David Pu

xlat_tables_v2: unmap region without recursion.

2019-03-05T17:21:39Z

xlat_tables_v2: map region without recursion.

2019-03-05T17:21:36Z

xlat_tables_v2: find VA/idx with helper functions.

2019-02-28T18:14:20Z

This patch introduces 2 helper functions 'xlat_tables_find_start_va' and 'xlat_tables_va_to_index' to find the first VA and table index affected by the specified mmap region. it reduces code duplication and cyclomatic code complexity in xlat_tables_map/unmap_region functions. Cyclomatic complexity calculated using 'Coverity' fixes arm-software/tf-issues#673 Signed-off-by: David Pu

xlat_tables_v2: get unmap action type with helper function.

2019-02-28T17:58:16Z

This patch introduces helper function 'xlat_tables_unmap_region_action' to get the required action type from given arguments when unmapping the specified region. it reduces cyclomatic code complexity in xlat_tables_unmap_region function. Cyclomatic complexity calculated using 'Coverity' fixes arm-software/tf-issues#673 Signed-off-by: David Pu