bcm63xx/atf/include/lib/xlat_tables, branch master

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

Replace ASSEMBLY with compiler-builtin ASSEMBLER

2019-08-01T20:14:12Z

NOTE: __ASSEMBLY__ macro is now deprecated in favor of __ASSEMBLER__. All common C compilers predefine a macro called __ASSEMBLER__ when preprocessing a .S file. There is no reason for TF-A to define it's own __ASSEMBLY__ macro for this purpose instead. To unify code with the export headers (which use __ASSEMBLER__ to avoid one extra dependency), let's deprecate __ASSEMBLY__ and switch the code base over to the predefined standard. Change-Id: Id7d0ec8cf330195da80499c68562b65cb5ab7417 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

ARMv7: support non-LPAE mapping (not xlat_v2)

2019-02-19T17:07:48Z

Support 32bit descriptor MMU table. This is required by ARMv7 architectures that do not support the Large Page Address Extensions. nonlpae_tables.c source file is dumped from the OP-TEE project: core_mmu_armv7.c and related header files. Change-Id: If912d66c374290c49c5a1211ce4c5c27b2d7dc60 Signed-off-by: Etienne Carriere Signed-off-by: Usama Arif

lib/xlat_tables: Add support for ARMv8.4-TTST

2019-01-30T11:17:38Z

ARMv8.4-TTST (Small Translation tables) relaxes the lower limit on the size of translation tables by increasing the maximum permitted value of the T1SZ and T0SZ fields in TCR_EL1, TCR_EL2, TCR_EL3, VTCR_EL2 and VSTCR_EL2. This feature is supported in AArch64 state only. This patch adds support for this feature to both versions of the translation tables library. It also removes the static build time checks for virtual address space size checks to runtime assertions. Change-Id: I4e8cebc197ec1c2092dc7d307486616786e6c093 Signed-off-by: Sathees Balya

Sanitise includes across codebase

2019-01-04T10:43:17Z

Enforce full include path for includes. Deprecate old paths. The following folders inside include/lib have been left unchanged: - include/lib/cpus/${ARCH} - include/lib/el3_runtime/${ARCH} The reason for this change is that having a global namespace for includes isn't a good idea. It defeats one of the advantages of having folders and it introduces problems that are sometimes subtle (because you may not know the header you are actually including if there are two of them). For example, this patch had to be created because two headers were called the same way: e0ea0928d5b7 ("Fix gpio includes of mt8173 platform to avoid collision."). More recently, this patch has had similar problems: 46f9b2c3a282 ("drivers: add tzc380 support"). This problem was introduced in commit 4ecca33988b9 ("Move include and source files to logical locations"). At that time, there weren't too many headers so it wasn't a real issue. However, time has shown that this creates problems. Platforms that want to preserve the way they include headers may add the removed paths to PLAT_INCLUDES, but this is discouraged. Change-Id: I39dc53ed98f9e297a5966e723d1936d6ccf2fc8f Signed-off-by: Antonio Nino Diaz

SPM: Support multiple xlat tables contexts

2018-12-11T13:45:41Z

Change-Id: Ib7c2529b85bb5930d44907edfc8ead13d3b1ef4d Co-authored-by: Sandrine Bailleux Signed-off-by: Antonio Nino Diaz

xlat v2: Support mapping regions with allocated VA

2018-11-22T13:29:45Z

Provide new APIs to add new regions without specifying the base VA. - `mmap_add_region_alloc_va` adds a static region to mmap choosing as base VA the first possible address after all the currently mapped regions. It is aligned to an appropriate boundary in relation to the size and base PA of the requested region. No attempt is made to fill any unused VA holes. - `mmap_add_dynamic_region_alloc_va` it adds a region the same way as `mmap_add_region_alloc_va` does, but it's dynamic instead of static. - `mmap_add_alloc_va` takes an array of non const `mmap_region_t`, maps them in the same way as `mmap_add_region_alloc_va` and fills their `base_va` field. A helper macro has been created to help create the array, called `MAP_REGION_ALLOC_VA`. Change-Id: I5ef3f82ca0dfd0013d2e8034aa22f13ca528ba37 Signed-off-by: Antonio Nino Diaz

Standardise header guards across codebase

2018-11-08T10:20:19Z

All identifiers, regardless of use, that start with two underscores are reserved. This means they can't be used in header guards. The style that this project is now to use the full name of the file in capital letters followed by 'H'. For example, for a file called "uart_example.h", the header guard is UART_EXAMPLE_H. The exceptions are files that are imported from other projects: - CryptoCell driver - dt-bindings folders - zlib headers Change-Id: I50561bf6c88b491ec440d0c8385c74650f3c106e Signed-off-by: Antonio Nino Diaz

xlat: Fix compatibility between v1 and v2

2018-10-26T13:55:30Z

There are several platforms using arm_setup_page_tables(), which is supposed to be Arm platform only. This creates several dependency problems between platforms. This patch adds the definition XLAT_TABLES_LIB_V2 to the xlat tables lib v2 makefile. This way it is possible to detect from C code which version is being used and include the correct header. The file arm_xlat_tables.h has been renamed to xlat_tables_compat.h and moved to a common folder. This way, when in doubt, this header can be used to guarantee compatibility, as it includes the correct header based on XLAT_TABLES_LIB_V2. This patch also removes the usage of ARM_XLAT_TABLES_V1 from QEMU (so that is now locked in xlat lib v2) and ZynqMP (where it was added as a workaround). Change-Id: Ie1e22a23b44c549603d1402a237a70d0120d3e04 Signed-off-by: Antonio Nino Diaz