Clarify "Getting the TF source code" in user guide ...

Remove the following redundant sentence from the user guide, which
implies the user should use the TF version from the Linaro release,
which was not the intention:

"However, the rest of this document assumes that you got the
Trusted Firmware as part of the Linaro release."

Also, tidied up the grammar in this section.

Change-Id: I5dae0b68d3683e2a85a7b3c6a31222182a66f6c8

Update `contributing.md` CLA instructions ...

Update `contributing.md` to make it clear that contributors should
wait for ARM to confirm acceptance of the completed CLA before
making contributions.

Change-Id: Ide62d893ad8cc0d2a0949c16605cd8689d9624bf

Remove out-dated comment in FVP PWRC code ...

fvp_pwr_domain_on() used to program the CPUs mailbox. This changed
with commit 804040d10 but the comment documenting this code still
refers to the mailbox programming. This patch removes this out-dated
information.

Change-Id: Ibfe2a426bdda6e71f20c83a99cb223ceca9c559c

Merge pull request #473 from labapart/documentation-clean-legacy-variables ...

Documentation: Clean legacy variables in User Guide

Merge pull request #472 from danh-arm/dh/fwu-docs ...

FWU: Add documentation for Firmware Update feature

FWU: Add documentation for Firmware Update feature ...

This patch adds design documentation for the Firmware Update (FWU)
feature in `firmware-update.md`. It provides an overview of FWU,
describes the BL1 SMC interface, and includes diagrams showing
an example FWU boot flow and the FWU state machine.

This patch also updates the existing TF documents where needed:

*   `porting-guide.md`
*   `user-guide.md`
*   `firmware-design.md`
*   `rt-svc-writers-guide.md`
*   `trusted_board_boot.md`

Change-Id: Ie6de31544429b18f01327bd763175e218299a4ce
Co-Authored-By: Dan Handley <dan.handley@arm.com>

docs/user-guide.md: Remove deprecated `FVP_SHARED_DATA_LOCATION`

docs/user-guide.md: Renamed legacy `FVP_TSP_RAM_LOCATION` ...

`FVP_TSP_RAM_LOCATION` has been renamed into `ARM_TSP_RAM_LOCATION`.

Merge pull request #471 from sandrine-bailleux/sb/reset-doc-v2 ...

Introduce the ARM TF reset design document (v2)

Merge pull request #466 from soby-mathew/sm/giv3-doc ...

Documentation updates for the new GIC drivers

Merge pull request #470 from danh-arm/dh/fwu-done-fix ...

FWU: Pass client cookie to FWU_SMC_UPDATE_DONE

Introduce the ARM TF reset design document ...

This patch introduces a new document presenting the ARM Trusted
Firmware Reset Design. It shows the reset code flow, lists the
different build options that affect it, in which case to use them
and what their exact effect is.

The section about using BL31 entrypoint as the reset address has
been moved from the general firmware design document to this one.
It's also been improved to explain why the FVP port supports the
RESET_TO_BL31 configuration, even though the reset vector address
can't be programmed dynamically.

This document includes some images, which have been generated using
Dia version 0.97.2. This tool can be obtained from:
https://wiki.gnome.org/Apps/Dia/Download
This patch provides:
 - the image files describing the different reset flow diagrams;
 - the source '.dia' file;
 - a script automating the generation of the images from the '.dia'
   file.
Note that the 2 latter files are not actually needed for the document
and are provided for convenience only, in case the reset images need
to be modified.

Change-Id: Ib6302e8209d418a5b31c4e85e55fd9e83caf2ca2

Merge pull request #469 from danh-arm/dh/fwu-resume-fix ...

FWU: Remove image_id arg from FWU_SMC_IMAGE_RESUME

FWU: Pass client cookie to FWU_SMC_UPDATE_DONE ...

The current FWU_SMC_UPDATE_DONE implementation incorrectly passes
an unused framework cookie through to the 1st argument in the
platform function `bl1_plat_fwu_done`. The intent is to allow
the SMC caller to pass a cookie through to this function.

This patch fixes FWU_SMC_UPDATE_DONE to pass x1 from the caller
through to `bl1_plat_fwu_done`. The argument names are updated
for clarity.

Upstream platforms currently do not use this argument so no
impact is expected.

Change-Id: I107f4b51eb03e7394f66d9a534ffab1cbc09a9b2

FWU: Remove image_id arg from FWU_SMC_IMAGE_RESUME ...

The current implementation of FWU_SMC_IMAGE_RESUME when called
from the normal world, uses the provided image_id argument to
determine which secure image to resume into. This implies that
the normal world has a choice of which secure image to resume
into when in fact it is only possible to resume into the
previously interrupted secure image.

This patch removes the argument, tightens up the pre-conditions
for the SMC and adds additional asserts.

The pre-conditions for FWU_SMC_SEC_IMAGE_DONE are also
tightened up.

Change-Id: Ia5a46753bb01e8f8dad8a2999314f90db8f300e8

Documentation updates for the new GIC drivers ...

This patch updates the relevant documentation in ARM Trusted Firmware
for the new GIC drivers. The user-guide.md and porting-guide.md have been
updated as follows:

*  The build option to compile Trusted Firmware with different GIC drivers
   for FVP has been explained in the user-guide.md.

*  The implementation details of interrupt management framework porting
   APIs for GICv3 have been added in porting-guide.md.

*  The Linaro tracking kernel release does not work OOB in GICv3 mode.
   The instructions for changing UEFI configuration in order to run with
   the new GICv3 driver in ARM TF have been added to user-guide.md.

The interrupt-framework-design.md has been updated as follows:

*  Describes support for registering and handling interrupts targeted to EL3
   e.g. Group 0 interrupts in GICv3.

*  Describes the build option `TSP_NS_INTR_ASYNC_PREEMPT` in detail.

*  Describes preemption of TSP in S-EL1 by non secure interrupts and
   also possibly by higher priority EL3 interrupts.

*  Describes the normal world sequence for issuing `standard` SMC calls.

*  Modifies the document to correspond to the current state of interrupt
   handling in TSPD and TSP.

*  Modifies the various functions names in the document to reflect
   the current names used in code.

Change-Id: I78c9514b5be834f193405aad3c1752a4a9e27a6c

Merge pull request #468 from danh-arm/dh/fwu-tweaks ...

FWU: Fix secure memory check in image auth

Merge pull request #467 from jcastillo-arm/jc/tbb_oid ...

Apply new image terminology

FWU: Fix secure memory check in image auth ...

The implementation of FWU_SMC_IMAGE_AUTH performs a number of
pre-condition checks before authenticating the image. One of
these checks calls `bl1_plat_mem_check()` to ensure the image
source is mapped in when authenticating an image in place.
The framework incorrectly passes the security state of the
caller into this function instead of the security state of
the source image.

This patch corrects the defect. The defect would only
manifest itself for secure world callers authenticating
non-secure images in place, which is not done by current
upstream platforms.

Change-Id: I617c7b43e02ac7149f266aeaf3874316e62f3003

Remove dashes from image names: 'BL3-x' --> 'BL3x' ...

This patch removes the dash character from the image name, to
follow the image terminology in the Trusted Firmware Wiki page:

    https://github.com/ARM-software/arm-trusted-firmware/wiki

Changes apply to output messages, comments and documentation.

non-ARM platform files have been left unmodified.

Change-Id: Ic2a99be4ed929d52afbeb27ac765ceffce46ed76

Replace all SCP FW (BL0, BL3-0) references ...

This patch replaces all references to the SCP Firmware (BL0, BL30,
BL3-0, bl30) with the image terminology detailed in the TF wiki
(https://github.com/ARM-software/arm-trusted-firmware/wiki):

    BL0          -->  SCP_BL1
    BL30, BL3-0  -->  SCP_BL2
    bl30         -->  scp_bl2

This change affects code, documentation, build system, tools and
platform ports that load SCP firmware. ARM plaforms have been
updated to the new porting API.

IMPORTANT: build option to specify the SCP FW image has changed:

    BL30 --> SCP_BL2

IMPORTANT: This patch breaks compatibility for platforms that use BL2
to load SCP firmware. Affected platforms must be updated as follows:

    BL30_IMAGE_ID --> SCP_BL2_IMAGE_ID
    BL30_BASE --> SCP_BL2_BASE
    bl2_plat_get_bl30_meminfo() --> bl2_plat_get_scp_bl2_meminfo()
    bl2_plat_handle_bl30() --> bl2_plat_handle_scp_bl2()

Change-Id: I24c4c1a4f0e4b9f17c9e4929da815c4069549e58

TBB: apply TBBR naming convention to certificates and extensions ...

This patch applies the TBBR naming convention to the certificates
and the corresponding extensions defined by the CoT:

    * Certificate UUID names
    * Certificate identifier names
    * OID names

Changes apply to:

    * Generic code (variables and defines)
    * The default certificate identifiers provided in the generic
      code
    * Build system
    * ARM platforms port
    * cert_create tool internal definitions
    * fip_create and cert_create tools command line options
    * Documentation

IMPORTANT: this change breaks the compatibility with platforms
that use TBBR. The platform will need to adapt the identifiers
and OIDs to the TBBR naming convention introduced by this patch:

Certificate UUIDs:

    UUID_TRUSTED_BOOT_FIRMWARE_BL2_CERT --> UUID_TRUSTED_BOOT_FW_CERT
    UUID_SCP_FIRMWARE_BL30_KEY_CERT --> UUID_SCP_FW_KEY_CERT
    UUID_SCP_FIRMWARE_BL30_CERT --> UUID_SCP_FW_CONTENT_CERT
    UUID_EL3_RUNTIME_FIRMWARE_BL31_KEY_CERT --> UUID_SOC_FW_KEY_CERT
    UUID_EL3_RUNTIME_FIRMWARE_BL31_CERT --> UUID_SOC_FW_CONTENT_CERT
    UUID_SECURE_PAYLOAD_BL32_KEY_CERT --> UUID_TRUSTED_OS_FW_KEY_CERT
    UUID_SECURE_PAYLOAD_BL32_CERT --> UUID_TRUSTED_OS_FW_CONTENT_CERT
    UUID_NON_TRUSTED_FIRMWARE_BL33_KEY_CERT --> UUID_NON_TRUSTED_FW_KEY_CERT
    UUID_NON_TRUSTED_FIRMWARE_BL33_CERT --> UUID_NON_TRUSTED_FW_CONTENT_CERT

Certificate identifiers:

    BL2_CERT_ID --> TRUSTED_BOOT_FW_CERT_ID
    BL30_KEY_CERT_ID --> SCP_FW_KEY_CERT_ID
    BL30_CERT_ID --> SCP_FW_CONTENT_CERT_ID
    BL31_KEY_CERT_ID --> SOC_FW_KEY_CERT_ID
    BL31_CERT_ID --> SOC_FW_CONTENT_CERT_ID
    BL32_KEY_CERT_ID --> TRUSTED_OS_FW_KEY_CERT_ID
    BL32_CERT_ID --> TRUSTED_OS_FW_CONTENT_CERT_ID
    BL33_KEY_CERT_ID --> NON_TRUSTED_FW_KEY_CERT_ID
    BL33_CERT_ID --> NON_TRUSTED_FW_CONTENT_CERT_ID

OIDs:

    TZ_FW_NVCOUNTER_OID --> TRUSTED_FW_NVCOUNTER_OID
    NTZ_FW_NVCOUNTER_OID --> NON_TRUSTED_FW_NVCOUNTER_OID
    BL2_HASH_OID --> TRUSTED_BOOT_FW_HASH_OID
    TZ_WORLD_PK_OID --> TRUSTED_WORLD_PK_OID
    NTZ_WORLD_PK_OID --> NON_TRUSTED_WORLD_PK_OID
    BL30_CONTENT_CERT_PK_OID --> SCP_FW_CONTENT_CERT_PK_OID
    BL30_HASH_OID --> SCP_FW_HASH_OID
    BL31_CONTENT_CERT_PK_OID --> SOC_FW_CONTENT_CERT_PK_OID
    BL31_HASH_OID --> SOC_AP_FW_HASH_OID
    BL32_CONTENT_CERT_PK_OID --> TRUSTED_OS_FW_CONTENT_CERT_PK_OID
    BL32_HASH_OID --> TRUSTED_OS_FW_HASH_OID
    BL33_CONTENT_CERT_PK_OID --> NON_TRUSTED_FW_CONTENT_CERT_PK_OID
    BL33_HASH_OID --> NON_TRUSTED_WORLD_BOOTLOADER_HASH_OID
    BL2U_HASH_OID --> AP_FWU_CFG_HASH_OID
    SCP_BL2U_HASH_OID --> SCP_FWU_CFG_HASH_OID
    NS_BL2U_HASH_OID --> FWU_HASH_OID

Change-Id: I1e047ae046299ca913911c39ac3a6e123bd41079

Merge pull request #465 from jcastillo-arm/jc/tbb_mbedtls_2_x ...

Move up to mbed TLS 2.x

Move up to mbed TLS 2.x ...

The mbed TLS library has introduced some changes in the API from
the 1.3.x to the 2.x releases. Using the 2.x releases requires
some changes to the crypto and transport modules.

This patch updates both modules to the mbed TLS 2.x API.

All references to the mbed TLS library in the code or documentation
have been updated to 'mbed TLS'. Old references to PolarSSL have
been updated to 'mbed TLS'.

User guide updated to use mbed TLS 2.2.0.

NOTE: moving up to mbed TLS 2.x from 1.3.x is not backward compatible.
Applying this patch will require an mbed TLS 2.x release to be used.
Also note that the mbed TLS license changed to Apache version 2.0.

Change-Id: Iba4584408653cf153091f2ca2ee23bc9add7fda4

Merge pull request #464 from sandrine-bailleux/sb/update-deps ...

Move up dependency versions in user guide

Move up dependency versions in user guide ...

Move up the version numbers in the user guide of:

 * DS-5 (to v5.22)
 * Base FVP (to 7.0)
 * Foundation FVP (to 9.4)
 * Linaro release (to 15.10)

Note that, starting from Linaro release 15.10, the related release
instructions have migrated from http://releases.linaro.org to the
ARM Connected Community website. The URLs in the User Guide have
been updated accordingly.

The 'libssl-dev' package has been removed from the list of
prerequisite tools, as it is already referenced on the ARM Connected
Community page. Also, the 'device-tree-compiler' package has been
marked as an optional dependency, since the Trusted Firmware
repository provides the prebuilt DTB files. Hence, this tool is
needed only when the user wants to rebuild the DTS files.

Change-Id: I4a172ece60bf90437131c6b96e73a9f1e9b40117

Merge pull request #463 from jcastillo-arm/jc/tf-issues/216 ...

De-feature PL011 UART driver to match generic UART spec

De-feature PL011 UART driver to match generic UART spec ...

The Server Base System Architecture document (ARM-DEN-0029)
specifies a generic UART device. The programmer's view of this
generic UART is a subset of the ARM PL011 UART. However, the
current PL011 driver in Trusted Firmware uses some features
that are outside the generic UART specification.

This patch modifies the PL011 driver to exclude features outside
the SBSA generic UART specification by setting the boolean build
option 'PL011_GENERIC_UART=1'. Default value is 0 (use full
PL011 features).

User guide updated.

Fixes ARM-software/tf-issues#216

Change-Id: I6e0eb86f9d69569bc3980fb57e70d6da5d91a737

Merge pull request #462 from soby-mathew/sm/runtime_console ...

Enable BL31 to configure a runtime console

Merge pull request #453 from yatharth-arm/yk/fwu-6 ...

Firmware Update patch stack