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Call the GICv2 driver API to initialise per-PE target mask.

Change-Id: Idc7eb0d906a5379f4c05917af05c90613057ab97
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>

The PE target mask is used to translate linear PE index (returned by
platform core position) to a bit mask used when targeting interrupts to
a PE, viz. when raising SGIs and routing SPIs.

The platform shall:

  - Populate the driver data with a pointer to array that's to contain
    per-PE target masks.

  - Invoke the new driver API 'gicv2_set_pe_target_mask()' during
    per-CPU initialization so that the driver populates the target mask
    for that CPU.

Platforms that don't intend to target interrupts or raise SGIs need not
populate this.

Change-Id: Ic0db54da86915e9dccd82fff51479bc3c1fdc968
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>

Document the API in separate platform interrupt controller API document.

Change-Id: If18f208e10a8a243f5c59d226fcf48e985941949
Co-authored-by: Yousuf A <yousuf.sait@arm.com>
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>

fiptool: Precursor changes for Visual Studio

In order to compile the source of Fiptool using Visual Studio a number
of adjustments are required to the source.  This commit modifies the
source with changes that will be required, but makes no functional
modification.  The intent is to allow confirmation that the GCC build
is unaffected.

Change-Id: I4055bd941c646dd0a1aa2e24b940a1db3bf629ce
Signed-off-by: Evan Lloyd <evan.lloyd@arm.com>

cert_tool: update for compatibility with OpenSSL v1.1

trusty: save/restore FPU registers in world switch

Improvements to the translation tables library v2

cert_tool: Fix ECDSA certificates create failure

Commit a8eb286a

 introduced the
following error when creating ECDSA certificates.
    ERROR:   Error creating key 'Trusted World key'
    Makefile:634: recipe for target 'certificates' failed
    make: *** [certificates] Error 1

this patch adds the function to create PKCS#1 v1.5.

Change-Id: Ief96d55969d5e9877aeb528c6bb503b560563537
Signed-off-by: Qixiang Xu <qixiang.xu@arm.com>

This patch fixes incompatibility issues that prevent building the cert_tool
with OpenSSL >= v1.1.0. The changes introduced are still backwards
compatible with OpenSSL v1.0.2.

Fixes arm-software/trusted-fw#521
Signed-off-by: Michalis Pappas <mpappas@fastmail.fm>

Fix assertion in GIC ITS helper

This patch fixes an assertion check in the GICv3 ITS helper function.

Change-Id: I75f50d7bf6d87c12c6e24a07c9a9889e5facf4a5
Signed-off-by: Soby Mathew <soby.mathew@arm.com>

Increase PLAT_ARM_MMAP_ENTRIES and MAX_XLAT_TABLES

The MEM_PROTECT support adds a MMAP region for DRAM2, which when
building with TBBR support and OP-TEE tsp requires an additional
entry in the MMAP region array in BL2 - PLAT_ARM_MMAP_ENTRIES is
increased.

The MEM_PROTECT support also adds a new region in BL31, and when
BL31 is placed in DRAM, the memory mappings require an additional
translation table - MAX_XLAT_TABLES is increased.

Change-Id: I0b76260da817dcfd0b8f73a7193c36efda977625
Signed-off-by: David Cunado <david.cunado@arm.com>

GICv3 context save and restore

Give hints on how to use the GICv3 save/restore helpers in the
implementation of the PSCI handlers.

Change-Id: I86de1c27417b64c7ce290974964ef97ff678f676
Signed-off-by: Douglas Raillard <douglas.raillard@arm.com>

This patch adds functions to save and restore GICv3 ITS registers during
system suspend. Please note that the power management of GIC ITS is
implementation defined. These functions only implements the
architectural part of the ITS power management and they do not restore
memory structures or register content required to support ITS. Even if
the ITS implementation stores structures in memory, an implementation
defined power down sequence is likely to be required to flush some
internal ITS caches to memory. If such implementation defined sequence
is not followed, the platform must ensure that the ITS is not power
gated during system suspend.

Change-Id: I5f31e5541975aa7dcaab69b0b7f67583c0e27678
Signed-off-by: Soby Mathew <soby.mathew@arm.com>
Signed-off-by: Douglas Raillard <douglas.raillard@arm.com>

During system suspend, the GICv3 Distributor and Redistributor context
can be lost due to power gating of the system power domain. This means
that the GICv3 context needs to be saved prior to system suspend and
restored on wakeup. Currently the consensus is that the Firmware should
be in charge of this. See tf-issues#464 for more details.

This patch introduces helper APIs in the GICv3 driver to save and
restore the Distributor and Redistributor contexts. The GICv3 ITS
context is not considered in this patch because the specification says
that the details of ITS power management is implementation-defined.
These APIs are expected to be appropriately invoked by the platform
layer during system suspend.

Fixes ARM-software/tf-issues#464

Change-Id: Iebb9c6770ab8c4d522546f161fa402d2fe02ec00
Signed-off-by: Soby Mathew <soby.mathew@arm.com>
Signed-off-by: Douglas Raillard <douglas.raillard@arm.com>

Tidy up the code a bit by turning some macros into inline functions
which allows to remove the do/while(0) idiom and backslashes at the end
of the line.

Change-Id: Ie41a4ea4a4da507f7b925247b53e85019101d717
Signed-off-by: Douglas Raillard <douglas.raillard@arm.com>

Reindent the file using tabs as the mix of spaces and tabs confuses some
editors and leads them to use spaces instead of tabs for new code
although the coding style mandates tabs.

Change-Id: I87fa4a5d368a048340054b9b3622325f3f7befba
Signed-off-by: Douglas Raillard <douglas.raillard@arm.com>

This patch introduces the ability of the xlat tables library to manage
EL0 and EL1 mappings from a higher exception level.

Attributes MT_USER and MT_PRIVILEGED have been added to allow the user
specify the target EL in the translation regime EL1&0.

REGISTER_XLAT_CONTEXT2 macro is introduced to allow creating a
xlat_ctx_t that targets a given translation regime (EL1&0 or EL3).

A new member is added to xlat_ctx_t to represent the translation regime
the xlat_ctx_t manages. The execute_never mask member is removed as it
is computed from existing information.

Change-Id: I95e14abc3371d7a6d6a358cc54c688aa9975c110
Co-authored-by: Douglas Raillard <douglas.raillard@arm.com>
Co-authored-by: Sandrine Bailleux <sandrine.bailleux@arm.com>
Co-authored-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Introduce a variant of the TLB invalidation helper function that
allows the targeted translation regime to be specified, rather than
defaulting to the current one.

This new function is useful in the context of EL3 software managing
translation tables for the S-EL1&0 translation regime, as then it
might need to invalidate S-EL1&0 TLB entries rather than EL3 ones.

Define a new enumeration to be able to represent translation regimes in
the xlat tables library.

Change-Id: Ibe4438dbea2d7a6e7470bfb68ff805d8bf6b07e5
Co-authored-by: Sandrine Bailleux <sandrine.bailleux@arm.com>
Co-authored-by: Douglas Raillard <douglas.raillard@arm.com>
Co-authored-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

TLB invalidation functions used to be conditionally compiled in.
They were enabled only when using the dynamic mapping feature.
because only then would we need to modify page tables on the fly.

Actually there are other use cases where invalidating TLBs is required.
When changing memory attributes in existing translation descriptors for
example. These other use cases do not necessarily depend on the dynamic
mapping feature.

This patch removes this dependency and always compile TLB invalidation
functions in. If they're not used, they will be removed from the binary
at link-time anyway so there's no consequence on the memory footprint
if these functions are not called.

Change-Id: I1c33764ae900eb00073ee23b7d0d53d4efa4dd21
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>

The current implementation of the memory mapping API favours mapping
memory regions using the biggest possible block size in order to
reduce the number of translation tables needed.

In some cases, this behaviour might not be desirable. When translation
tables are edited at run-time, coarse-grain mappings like that might
need splitting into finer-grain tables. This operation has a
performance cost.

The MAP_REGION2() macro allows to specify the granularity of
translation tables used for the initial mapping of a memory region.
This might increase performance for memory regions that are likely to
be edited in the future, at the expense of a potentially increased
memory footprint.

The Translation Tables Library Design Guide has been updated to
explain the use case for this macro. Also added a few intermediate
titles to make the guide easier to digest.

Change-Id: I04de9302e0ee3d326b8877043a9f638766b81b7b
Co-authored-by: Sandrine Bailleux <sandrine.bailleux@arm.com>
Co-authored-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Mem protect

TSP: Support multi-threading CPUs on FVP

Commit 11ad8f20

 added supporting
multi-threaded CPUs on FVP platform, including modifications for
calculating CPU IDs. This patch imports the strong definition of the
same CPU ID calculation on FVP platform for TSP.

Without this patch, TSP on FVP was using the default CPU ID calculation,
which would end up being wrong on CPUs with multi-threading.

Change-Id: If67fd492dfce1f57224c9e693988c4b0f89a9a9a
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>

Add support for TBBR using ECDSA keys in ARM platforms

hikey*: Update docs

Signed-off-by: Victor Chong <victor.chong@linaro.org>

Uniphier: fix xlat tables lib inclusion

Uses the xlat tables library's Makefile instead of directly including
the source files in the Uniphier platform port.

Change-Id: I27294dd71bbf9bf3e82973c75324652b037e5bce
Signed-off-by: Douglas Raillard <douglas.raillard@arm.com>

Fix MAP_REGION for GCC 4.9

Since commit 769d65da ("xlat: Use MAP_REGION macro as compatibility
layer"), building with GCC 4.9 fails.

  CC      plat/arm/board/fvp/fvp_common.c
plat/arm/board/fvp/fvp_common.c:60:2: error: initializer element is not constant
  ARM_MAP_SHARED_RAM,
  ^
plat/arm/board/fvp/fvp_common.c:60:2: error: (near initialization for 'plat_arm_mmap[0]')
make: *** [Makefile:535: build/fvp/release/bl1/fvp_common.o] Error 1

Taking into account that MAP_REGION(_FLAT) is widely used in array
initializers, do not use cast.

Fixes: 769d65da

 ("xlat: Use MAP_REGION macro as compatibility layer")
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

FVP: Include utils_def.h instead of utils.h

Set TCR_EL1.EPD1 bit to 1

Fix type of `unsigned long` constants

On ARM platforms, the maximum size of the address space is limited
to 32-bits as defined in arm_def.h. In order to access DRAM2, which
is defined beyond the 32-bit address space, the maximum address space
is increased to 36-bits in AArch64. It is possible to increase the
virtual space for AArch32, but it is more difficult and not supported
for now.

NOTE - the actual maximum memory address space is platform dependent
and is checked at run-time by querying the PARange field in the
ID_AA64MMFR0_EL1 register.

Change-Id: I6cb05c78a63b1fed96db9a9773faca04a5b93d67
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

mem_protect needs some kind of non-volatile memory because it has
to remember its state across reset and power down events.
The most suitable electronic part for this feature is a NVRAM
which should be only accesible from the secure world. Juno and
FVP lack such hardware and for this reason the MEM_PROTECT
functionality is implemented with Flash EEPROM memory on both
boards, even though this memory is accesible from the non-secure
world. This is done only to show a full implementation of
these PSCI features, but an actual system shouldn't use a
non-secure NVRAM to implement it.

The EL3 runtime software will write the mem_protect flag and BL2
will read and clear the memory ranges if enabled. It is done in
BL2 because it reduces the time that TF needs access to the full
non-secure memory.

The memory layout of both boards is defined using macros which
take different values in Juno and FVP platforms. Generic platform
helpers are added that use the platform specific macros to generate
a mem_region_t that is valid for the platform.

Change-Id: I2c6818ac091a2966fa07a52c5ddf8f6fde4941e9
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>