Merge pull request #706 from dp-arm/dp/pmf-aligned-svc ...

Ensure PMF service timestamps are properly aligned on a cache line bo…

Merge pull request #705 from dp-arm/dp/pmf-macro-rename ...

Rename `pmf_calc_timestamp_offset` to `pmf_calc_timestamp_addr`

Merge pull request #702 from jeenu-arm/psci-node-hw-state ...

Support for PSCI NODE_HW_STATE

CSS: Implement support for NODE_HW_STATE ...

This patch implements CSS platform hook to support NODE_HW_STATE PSCI
API. The platform hook queries SCP to obtain CSS power state. Power
states returned by SCP are then converted to expected PSCI return codes.

Juno's PSCI operation structure is modified to use the CSS
implementation.

Change-Id: I4a5edac0e5895dd77b51398cbd78f934831dafc0

PSCI: Add support for PSCI NODE_HW_STATE API ...

This patch adds support for NODE_HW_STATE PSCI API by introducing a new
PSCI platform hook (get_node_hw_state). The implementation validates
supplied arguments, and then invokes this platform-defined hook and
returns its result to the caller. PSCI capabilities are updated
accordingly.

Also updates porting and firmware design guides.

Change-Id: I808e55bdf0c157002a7c104b875779fe50a68a30

Merge pull request #707 from sandrine-bailleux-arm/sb/restore-xlat-defines ...

Restore some defines in xlat_tables.h

Merge pull request #708 from sandrine-bailleux-arm/sb/forward-decs ...

Add some missing forward declarations in plat_arm.h

Add some missing forward declarations in plat_arm.h ...

This patch adds a couple of missing forward declarations in plat_arm.h
so that all types it references are known within this header file,
without relying on previous header inclusions. This concerns the
meminfo and bl31_params structures, which are defined in bl_common.h.
Other external types referenced from plat_arm.h (e.g. mmap_region_t)
get declared through header files included by arm_plat.h so they
don't need forward declarations.

Change-Id: I471d5aa487919aff3fa979fc65e053f4f5b0ef32

Restore some defines in xlat_tables.h ...

Commit e8719552a24 removed some definitions related to translation
tables from the xlat_tables.h header file, based on the assumption
that they weren't used by any platform. These are actually used by
some partners so this patch restores them.

Fixes ARM-software/tf-issues#425

Change-Id: Idafa5f00bb0bd9c2847b5ae6541cf8db93c7b89a

Ensure PMF service timestamps are properly aligned on a cache line boundary ...

When using more than a single service in PMF, it is necessary that the
per-service timestamps begin on a cache line boundary.  Previously it
was possible that two services shared a cache line for their
timestamps.  This made it difficult to reason about cache maintenance
operations within a single service and required a global understanding
of how all services operate.

Change-Id: Iacaae5154a7e19ad4107468e56df9ad082ee371c

Rename `pmf_calc_timestamp_offset` to `pmf_calc_timestamp_addr` ...

The macro calculates an absolute address rather than an offset so
rename it to avoid confusion.

Change-Id: I351f73dfd809fd28c0c30d38928caf5c5cd1af04

Support for Mediatek MT6795 SoC ...

This patch support single core to boot to Linux kernel
through Trusted Firmware.
It also support 32 bit kernel and 64 bit kernel booting.

Merge pull request #690 from soby-mathew/sm/level_sel_xlat ...

Automatically select initial xlation lookup level

Add assembler helper to calculate PMF timestamp offset ...

Given the service name and timestamp id, this assembler macro
calculates the offset into a memory region where the per-cpu timestamp
value is located.

Change-Id: I47f6dfa2a17be182675e2ca0489d6eed42433209

Move pmf headers to include/lib/pmf ...

More headers will be needed soon so better to move these to their own
directory to avoid cluttering include/lib.

Change-Id: I6a72dc5b602d6f51954cf60aadd1beb52a268670

Automatically select initial xlation lookup level ...

Instead of hardcoding a level 1 table as the base translation level
table, let the code decide which level is the most appropriate given
the virtual address space size.

As the table granularity is 4 KB, this allows the code to select
level 0, 1 or 2 as base level for AArch64. This way, instead of
limiting the virtual address space width to 39-31 bits, widths of
48-25 bit can be used.

For AArch32, this change allows the code to select level 1 or 2
as the base translation level table and use virtual address space
width of 32-25 bits.

Also removed some unused definitions related to translation tables.

Fixes ARM-software/tf-issues#362

Change-Id: Ie3bb5d6d1a4730a26700b09827c79f37ca3cdb65

Merge pull request #678 from soby-mathew/sm/PSCI_AArch32 ...

Introduce AArch32 support for PSCI library

emmc: support CMD23 ...

Support CMD23. When CMD23 is used, CMD12 could be avoided.

Two scenarios:
1. CMD17 for single block, CMD18 + CMD12 for multiple blocks.
2. CMD23 + CMD18 for both single block and multiple blocks.

The emmc_init() should initialize whether CMD23 is supported
or not.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>

AArch32: Add FVP support for SP_MIN ...

This patch implements the support for SP_MIN in FVP. The SP_MIN platform
APIs are implemented and the required makefile support is added for FVP.

Change-Id: Id50bd6093eccbd5e38894e3fd2b20d5baeac5452

AArch32: Add essential ARM platform and FVP support ...

This patch adds AArch32 support for FVP and implements common platform APIs
like `plat_get_my_stack`, `plat_set_my_stack`, `plat_my_core_cos` for AArch32.
Only Multi Processor(MP) implementations of these functions are considered in
this patch. The ARM Standard platform layer helpers are implemented for
AArch32 and the common makefiles are modified to cater for both AArch64 and
AArch32 builds. Compatibility with the deprecated platform API is not
supported for AArch32.

Change-Id: Iad228400613eec91abf731b49e21a15bcf2833ea

AArch32: add a minimal secure payload (SP_MIN) ...

This patch adds a minimal AArch32 secure payload SP_MIN. It relies on PSCI
library to initialize the normal world context. It runs in Monitor mode
and uses the runtime service framework to handle SMCs. It is added as
a BL32 component in the Trusted Firmware source tree.

Change-Id: Icc04fa6b242025a769c1f6c7022fde19459c43e9

AArch32: Add support to PSCI lib ...

This patch adds AArch32 support to PSCI library, as follows :

* The `psci_helpers.S` is implemented for AArch32.

* AArch32 version of internal helper function `psci_get_ns_ep_info()` is
  defined.

* The PSCI Library is responsible for the Non Secure context initialization.
  Hence a library interface `psci_prepare_next_non_secure_ctx()` is introduced
  to enable EL3 runtime firmware to initialize the non secure context without
  invoking context management library APIs.

Change-Id: I25595b0cc2dbfdf39dbf7c589b875cba33317b9d

AArch32: Add support in TF libraries ...

This patch adds AArch32 support to cpu ops, context management,
per-cpu data and spinlock libraries. The `entrypoint_info`
structure is modified to add support for AArch32 register
arguments. The CPU operations for AEM generic cpu in AArch32
mode is also added.

Change-Id: I1e52e79f498661d8f31f1e7b3a29e222bc7a4483

AArch32: Add SMCC context ...

This patch defines a SMCC context to save and restore
registers during a SMC call. It also adds appropriate helpers
to save and restore from this context for use by AArch32
secure payload and BL stages.

Change-Id: I64c8d6fe1d6cac22e1f1f39ea1b54ee1b1b72248

AArch32: Add API to invoke runtime service handler ...

This patch adds an API in runtime service framework to
invoke the registered handler corresponding to the SMC function
identifier. This is helpful for AArch32 because the number of
arguments required by the handler is more than registers
available as per AArch32 program calling conventions and
requires the use of stack. Hence this new API will do the
necessary argument setup and invoke the appropriate
handler. Although this API is primarily intended for AArch32,
it can be used for AArch64 as well.

Change-Id: Iefa15947fe5a1df55b0859886e677446a0fd7241

AArch32: Add translation table library support ...

This patch adds translation library supports for AArch32 platforms.
The library only supports long descriptor formats for AArch32.
The `enable_mmu_secure()` enables the MMU for secure world with
`TTBR0` pointing to the populated translation tables.

Change-Id: I061345b1779391d098e35e7fe0c76e3ebf850e08

AArch32: Add assembly helpers ...

This patch adds various assembly helpers for AArch32 like :

* cache management : Functions to flush, invalidate and clean
cache by MVA. Also helpers to do cache operations by set-way
are also added.

* stack management: Macros to declare stack and get the current
stack corresponding to current CPU.

* Misc: Macros to access co processor registers in AArch32,
macros to define functions in assembly, assert macros, generic
`do_panic()` implementation and function to zero block of memory.

Change-Id: I7b78ca3f922c0eda39beb9786b7150e9193425be

AArch32: Add essential Arch helpers ...

This patch adds the essential AArch32 architecture helpers
arch.h and arch_helpers.h and modifies `_types.h` to add AArch32
support.

A new build option `ARCH` is defined in the top level makefile to
enable the component makefiles to choose the right files based on the
Architecture it is being build for. Depending on this flag, either
`AARCH32` or `AARCH64` flag is defined by the Makefile. The default
value of `ARCH` flag is `aarch64`. The AArch32 build support will be
added in a later patch.

Change-Id: I405e5fac02db828a55cd25989b572b64cb005241

Move SIZE_FROM_LOG2_WORDS macro to utils.h ...

This patch moves the macro SIZE_FROM_LOG2_WORDS() defined in
`arch.h` to `utils.h` as it is utility macro.

Change-Id: Ia8171a226978f053a1ee4037f80142c0a4d21430

Merge pull request #672 from soby-mathew/sm/irouter_offset ...

GICv3: Fix the GICD_IROUTER offset