Cortex-A55: Implement workaround for erratum 768277 ...

Change-Id: Iebd45ef5e39ee7080235fb85414ce5b2e776f90c
Signed-off-by: Ambroise Vincent <ambroise.vincent@arm.com>

Tegra: Support for scatterfile for the BL31 image ...

This patch provides support for using the scatterfile format as
the linker script with the 'armlink' linker for Tegra platforms.

In order to enable the scatterfile usage the following changes
have been made:

* provide mapping for ld.S symbols in bl_common.h
* include bl_common.h from all the affected files
* update the makefile rules to use the scatterfile and armlink
  to compile BL31
* update pubsub.h to add sections to the scatterfile

NOTE: THIS CHANGE HAS BEEN VERIFIED WITH TEGRA PLATFORMS ONLY.

Change-Id: I7bb78b991c97d74a842e5635c74cb0b18e0fce67
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

Add ARMv8.3-PAuth registers to CPU context ...

ARMv8.3-PAuth adds functionality that supports address authentication of
the contents of a register before that register is used as the target of
an indirect branch, or as a load.

This feature is supported only in AArch64 state.

This feature is mandatory in ARMv8.3 implementations.

This feature adds several registers to EL1. A new option called
CTX_INCLUDE_PAUTH_REGS has been added to select if the TF needs to save
them during Non-secure <-> Secure world switches. This option must be
enabled if the hardware has the registers or the values will be leaked
during world switches.

To prevent leaks, this patch also disables pointer authentication in the
Secure world if CTX_INCLUDE_PAUTH_REGS is 0. Any attempt to use it will
be trapped in EL3.

Change-Id: I27beba9907b9a86c6df1d0c5bf6180c972830855
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Cleanup context handling library ...

Minor style cleanup.

Change-Id: Ief19dece41a989e2e8157859a265701549f6c585
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Add workaround for errata 1073348 for Cortex-A76 ...

Concurrent instruction TLB miss and mispredicted return instruction
might fetch wrong instruction stream. Set bit 6 of CPUACTLR_EL1 to
prevent this.

Change-Id: I2da4f30cd2df3f5e885dd3c4825c557492d1ac58
Signed-off-by: Louis Mayencourt <louis.mayencourt@arm.com>

Add workaround for errata 1220197 for Cortex-A76 ...

Streaming store under specific conditions might cause deadlock or data
corruption. Set bit 25:24 of CPUECTLR_EL1, which disables write
streaming to the L2 to prevent this.

Change-Id: Ib5cabb997b35ada78b27e75787afd610ea606dcf
Signed-off-by: Louis Mayencourt <louis.mayencourt@arm.com>

Add workaround for errata 855423 of Cortex-A73 ...

Broadcast maintainance operations might not be correctly synchronized
between cores. Set bit 7 of S3_0_C15_C0_2 to prevent this.

Change-Id: I67fb62c0b458d44320ebaedafcb8495ff26c814b
Signed-off-by: Louis Mayencourt <louis.mayencourt@arm.com>

Merge pull request #1835 from jts-arm/rename ...

Apply official names to new Arm Neoverse cores

Merge pull request #1828 from uarif1/master ...

Introduce Versatile Express FVP platform to arm-trusted-firmware.

ARMv7: support non-LPAE mapping (not xlat_v2) ...

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 <etienne.carriere@linaro.org>
Signed-off-by: Usama Arif <usama.arif@arm.com>

Rename Cortex-Helios to Neoverse E1 ...

Change-Id: I1adcf195c0ba739002f3a59e805c782dd292ccba
Signed-off-by: John Tsichritzis <john.tsichritzis@arm.com>

Rename Cortex-Helios filenames to Neoverse E1 ...

Change-Id: I33bdb9df0462b056adbd00922b2e73eb720560b3
Signed-off-by: John Tsichritzis <john.tsichritzis@arm.com>

Rename Cortex-Ares to Neoverse N1 ...

Change-Id: Ideb49011da35f39ff1959be6f5015fa212ca2b6b
Signed-off-by: John Tsichritzis <john.tsichritzis@arm.com>

Rename Cortex-Ares filenames to Neoverse N1 ...

Change-Id: I0bb5aca9bb272332340b5baefc473a01f8a27896
Signed-off-by: John Tsichritzis <john.tsichritzis@arm.com>

Update macro to check need for CVE-2017-5715 mitigation ...

Armv8.5 introduces the field CSV2 to register ID_AA64PFR0_EL1. It can
have the following 3 values:

- 0: Branch targets trained in one hardware described context may affect
     speculative execution in a different hardware described context. In
     some CPUs it may be needed to apply mitigations.

- 1: Branch targets trained in one hardware described context can only
     affect speculative execution in a different hardware described
     context in a hard-to-determine way. No mitigation required.

- 2: Same as 1, but the device is also aware of SCXTNUM_ELx register
     contexts. The TF doesn't use the registers, so there is no
     difference with 1.

The field CSV2 was originally introduced in the TRM of the Cortex-A76
before the release of the Armv8.5 architecture. That TRM only mentions
the meaning of values 0 and 1. Because of this, the code only checks if
the field has value 1 to know whether to enable or disable the
mitigations.

This patch makes it aware of value 2 as well. Both values 1 and 2
disable the mitigation, and 0 enables it.

Change-Id: I5af33de25a0197c98173f52c6c8c77b51a51429f
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

cpus: Add casts to all definitions in CPU headers ...

There are some incorrect casts and some missing casts in the headers.
This patch fixes the ones that were 64-bit or 32-bit wide wrongly and
adds casts where they were missing.

Note that none of the changes of the patch actually changes the values
of the definitions. This patch is just for correctness.

Change-Id: Iad6458021bad521922ce4f91bafff38b116b49eb
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

cpus: Fix some incorrect definitions in CPU headers ...

There are some values that should be 64-bit immediates but that resolve
to 0 because the type of the value is 32-bit wide. This patch casts the
expressions to 64-bit before the shift so that the definition has the
correct value.

The definitions are only used in assembly so far, so the code is not
actually affected by this bug. The assembler treats all values as 64-bit
values, so there are no overflows.

Change-Id: I965e4be631c1d28787c0913661d224c82a6b9155
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

libc: Move setjmp to libc folder ...

Now that setjmp() and longjmp() are compliant with the standard they can
be moved with the other libc files.

Change-Id: Iea3b91c34eb353ace5e171e72f331602d57774d5
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Merge pull request #1797 from antonio-nino-diaz-arm/an/remove-smccc-v2 ...

Remove support for the SMC Calling Convention 2.0

Remove support for the SMC Calling Convention 2.0 ...

This reverts commit 2f370465241c ("Add support for the SMC Calling
Convention 2.0").

SMCCC v2.0 is no longer required for SPM, and won't be needed in the
future. Removing it makes the SMC handling code less complicated.

The SPM implementation based on SPCI and SPRT was using it, but it has
been adapted to SMCCC v1.0.

Change-Id: I36795b91857b2b9c00437cfbfed04b3c1627f578
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

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

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 <sathees.balya@arm.com>

Sanitise includes across codebase ...

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 <antonio.ninodiaz@arm.com>

Reorganize architecture-dependent header files ...

The architecture dependant header files in include/lib/${ARCH} and
include/common/${ARCH} have been moved to /include/arch/${ARCH}.

Change-Id: I96f30fdb80b191a51448ddf11b1d4a0624c03394
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Enable DIT if supported ...

This patch enables the Data Independent Timing
functionality (DIT) in EL3 if supported
by the platform.

Change-Id: Ia527d6aa2ee88a9a9fe1c941220404b9ff5567e5
Signed-off-by: Sathees Balya <sathees.balya@arm.com>

Import exception helpers from TF-A-Tests ...

This is done in order to keep the files in both repositories in sync.

Change-Id: Ie1a9f321cbcfe8d7d14f206883fa718872271218
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Deprecate some unused AArch64 assembly functions ...

Change-Id: I8a0be21783a0c12325e6ab22e9e53ab5466ed9e0
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Move helpers from arch.h to arch_helpers.h ...

Some of the affected macros can only be used from C code. In general, we
use arch_helpers.h for any C helpers to access registers. For
consistency, the other macros have been moved as well.

Also, import some AArch32 helpers from TF-A-Tests.

Change-Id: Ie8fe1ddeadba5336c12971ddc39a7883121386b1
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Merge pull request #1712 from jeenu-arm/ssbs ...

AArch64: Use SSBS for CVE_2018_3639 mitigation

SPM: Introduce SPRT C host library ...

Change-Id: If57ec9cc0791f49d9ade83dff9d24ef9047963a8
Co-authored-by: Jean-Paul Etienne <jean-paul.etienne@arm.com>
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

SPM: Support multiple xlat tables contexts ...

Change-Id: Ib7c2529b85bb5930d44907edfc8ead13d3b1ef4d
Co-authored-by: Sandrine Bailleux <sandrine.bailleux@arm.com>
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>