This patch adds a link to the Cortex-A57 Software Optimization Guide
in the ARM CPU Specific Build Macros document to justify the default
value of the A57_DISABLE_NON_TEMPORAL_HINT build flag.
Change-Id: I9779e42a4bb118442b2b64717ce143314ec9dd16
The folowing build options were missing from the User Guide and have been
documented:
- CTX_INCLUDE_FPREGS
- DISABLE_PEDANTIC
- BUILD_STRING
- VERSION_STRING
- BUILD_MESSAGE_TIMESTAMP
Change-Id: I6a9c39ff52cad8ff04deff3ac197af84d437b8b7
Current code mandates loading of SCP_BL2/SCP_BL2U images for all
CSS platforms. On future ARM CSS platforms, the Application
Processor (AP) might not need to load these images. So, these
items can be removed from the FIP on those platforms.
BL2 tries to load SCP_BL2/SCP_BL2U images if their base
addresses are defined causing boot error if the images are not
found in FIP.
This change adds a make flag `CSS_LOAD_SCP_IMAGES` which if set
to `1` does:
1. Adds SCP_BL2, SCP_BL2U images to FIP.
2. Defines the base addresses of these images so that AP loads
them.
And vice-versa if it is set to `0`. The default value is set to
`1`.
Change-Id: I5abfe22d5dc1e9d80d7809acefc87b42a462204a
The LDNP/STNP instructions as implemented on Cortex-A53 and
Cortex-A57 do not behave in a way most programmers expect, and will
most probably result in a significant speed degradation to any code
that employs them. The ARMv8-A architecture (see Document ARM DDI
0487A.h, section D3.4.3) allows cores to ignore the non-temporal hint
and treat LDNP/STNP as LDP/STP instead.
This patch introduces 2 new build flags:
A53_DISABLE_NON_TEMPORAL_HINT and A57_DISABLE_NON_TEMPORAL_HINT
to enforce this behaviour on Cortex-A53 and Cortex-A57. They are
enabled by default.
The string printed in debug builds when a specific CPU errata
workaround is compiled in but skipped at runtime has been
generalised, so that it can be reused for the non-temporal hint use
case as well.
Change-Id: I3e354f4797fd5d3959872a678e160322b13867a1
Move up to Base FVP version 7.2 (build 0.8/7202) and Foundation FVP version
9.5 (build 9.5.41) in the user guide.
Change-Id: Ie9900596216808cadf45f042eec639d906e497b2
This patch adds a brief explanation of the top/bottom load approach
to the Firmware Design guide and how Trusted Firmware keeps track of
the free memory at boot time. This will help platform developers to
avoid unexpected results in the memory layout.
FixesARM-software/tf-issues#319
Change-Id: I04be7e24c1f3b54d28cac29701c24bf51a5c00ad
The memory translation library in Trusted Firmware supports
non-identity mappings for Physical to Virtual addresses since commit
f984ce84ba. However, the porting guide hasn't been updated
accordingly and still mandates the platform ports to use
identity-mapped page tables for all addresses.
This patch removes this out-dated information from the Porting Guide
and clarifies in which circumstances non-identity mapping may safely
be used.
FixesARM-software/tf-issues#258
Change-Id: I84dab9f3cabfc43794951b1828bfecb13049f706
This patch reworks the section about booting an EL3 payload in the
User Guide:
- Centralize all EL3 payload related information in the same
section.
- Mention the possibility to program the EL3 payload in flash memory
and execute it in place.
- Provide model parameters for both the Base and Foundation FVPs.
- Provide some guidance to boot an EL3 payload on Juno.
Change-Id: I975c8de6b9b54ff4de01a1154cba63271d709912
The PL011 TRM (ARM DDI 0183G) specifies that the UART must be
disabled before any of the control registers are programmed. The
PL011 driver included in TF does not disable the UART, so the
initialization in BL2 and BL31 is violating this requirement
(and potentially in BL1 if the UART is enabled after reset).
This patch modifies the initialization function in the PL011
console driver to disable the UART before programming the
control registers.
Register clobber list and documentation updated.
FixesARM-software/tf-issues#300
Change-Id: I839b2d681d48b03f821ac53663a6a78e8b30a1a1
Currently, Trusted Firmware on ARM platforms unlocks access to the
timer frame registers that will be used by the Non-Secure world. This
unlock operation should be done by the Non-Secure software itself,
instead of relying on secure firmware settings.
This patch adds a new ARM specific build option 'ARM_CONFIG_CNTACR'
to unlock access to the timer frame by setting the corresponding
bits in the CNTACR<N> register. The frame id <N> is defined by
'PLAT_ARM_NSTIMER_FRAME_ID'. Default value is true (unlock timer
access).
Documentation updated accordingly.
FixesARM-software/tf-issues#170
Change-Id: Id9d606efd781e43bc581868cd2e5f9c8905bdbf6
GIC v2 and v3 specification references in the porting guide
should refer to publically visible links, not ARM internal links.
Change-Id: Ib47c8adda6a03581f23bcaed72d71c08c7dd9fb1
Signed-off-by: Yuping Luo <yuping.luo@arm.com>
Since commit 804040d106, the Juno port has moved from per-CPU mailboxes
to a single shared one. This patch updates an out-dated reference to
the former per-CPU mailboxes mechanism in the Firmware Design.
Change-Id: I355b54156b1ace1b3df4c4416e1e8625211677fc
Migrate all direct usage of __attribute__ to usage of their
corresponding macros from cdefs.h.
e.g.:
- __attribute__((unused)) -> __unused
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
This patch adds a brief description of 'MAX_MMAP_REGIONS' and
'ADDR_SPACE_SIZE' to the Porting Guide. These fields must be defined
by the platform in order to use the translation table library.
Change-Id: Ida366458fe2bc01979091a014dc38da0fae5991e
This patch fixes a couple of issues in the "CPU specific operations
framework" section in the Firmware Design document.
* Fix broken link to the CPU Specific Build Macros document.
* Fix the path to the cortex_a53.S file.
* Fix power levels terminology.
Change-Id: Ib610791eaba13dab2823b7699bb63534bcd1c8fb
The fip_create tool specifies images in the command line using the
ARM TF naming convention (--bl2, --bl31, etc), while the cert_create
tool uses the TBBR convention (--tb-fw, --soc-fw, etc). This double
convention is confusing and should be aligned.
This patch updates the fip_create command line options to follow the
TBBR naming convention. Usage examples in the User Guide have been
also updated.
NOTE: users that build the FIP by calling the fip_create tool directly
from the command line must update the command line options in their
scripts. Users that build the FIP by invoking the main ARM TF Makefile
should not notice any difference.
Change-Id: I84d602630a2585e558d927b50dfde4dd2112496f
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
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>
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
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
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
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
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
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
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.
FixesARM-software/tf-issues#216
Change-Id: I6e0eb86f9d69569bc3980fb57e70d6da5d91a737
danh-arm
Sandrine Bailleux
Antonio Nino Diaz
Vikram Kanigiri
Juan Castillo
Yuping Luo
Soren Brinkmann
Yatharth Kochar
Olivier Martin
Soby Mathew