Tegra: introduce per-soc system reset handler

This patch adds a per-soc system reset handler for Tegra chips. The
handler gets executed before the actual system resets. This allows
for custom handli

Tegra: introduce per-soc system reset handler

This patch adds a per-soc system reset handler for Tegra chips. The
handler gets executed before the actual system resets. This allows
for custom handling of the system reset sequence on each SoC.

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

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Merge pull request #424 from jcastillo-arm/jc/tf-issues/327

IMF: postpone SCR_EL3 update if context is not initialized

Add -mstrict-align to the gcc options

ARMv8 architecture allows unaligned memory accesses. However,
Trusted Firmware disables such feature by setting the SCTLR_A_BIT
and SCTLR_SA_BIT in the SCTLR_EL

Add -mstrict-align to the gcc options

ARMv8 architecture allows unaligned memory accesses. However,
Trusted Firmware disables such feature by setting the SCTLR_A_BIT
and SCTLR_SA_BIT in the SCTLR_EL3 register (it enables alignment
checks).

This patch adds -mstrict-align to the gcc build options. Although
there are not explicit unaligned memory accesses in Trusted Firmware,
this flag will tell the compiler not to use them.

Fixes ARM-software/tf-issues#294

Change-Id: I69748c6cf28504be9ca3dc975a331d14459c9ef1

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Merge pull request #425 from achingupta/ag/tf-issues#332

Re-introduce evaluation of ENABLE_PLAT_COMPAT build flag

Re-introduce evaluation of ENABLE_PLAT_COMPAT build flag

Commit #73c99d4eb377e0e25f7951be53087bf92e7b4b18 had refactored the top level
Makefile. This commit also broke platform ports that still rely

Re-introduce evaluation of ENABLE_PLAT_COMPAT build flag

Commit #73c99d4eb377e0e25f7951be53087bf92e7b4b18 had refactored the top level
Makefile. This commit also broke platform ports that still rely on an enabled
ENABLE_PLAT_COMPAT build option since the evaluation of this option was also
accidentally removed from the Makefile.

This patch fixes this break by re-introducing the necessary support to ensure
that this build option is enabled by default if a platform port does not disable
it explicitly.

Fixes ARM-software/tf-issues#332

Change-Id: I2217595d2e0bccae7de98cc6c0ea448b5bf3dae2

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IMF: postpone SCR_EL3 update if context is not initialized

The set_routing_model() function in the Interrupt Management
Framework calls the context management library to update the
SCR_EL3 register.

IMF: postpone SCR_EL3 update if context is not initialized

The set_routing_model() function in the Interrupt Management
Framework calls the context management library to update the
SCR_EL3 register. This context management library assumes that
the context has been previously initialized. Consequently, if
a Secure Payload Dispatcher (SPD) tries to set the routing model
before initializing the context, the system will fail (in debug
mode, an assertion will be raised).

This patch fixes the issue by checking if the context has been
initialized before updating SCR_EL3. If a valid context is not
available, SCR_EL3 update will be done when the SPD calls the
context initialization function. This function will call
get_scr_el3_from_routing_model() to obtain the SCR_EL3 value.
If the SPD does not call the context initialization function
then it is SPD's responsibility to obtain SCR_EL3 from the IMF
and update the context accordingly.

Fixes ARM-software/tf-issues#327

Change-Id: Ic2f1c6e899e578a8db858ec43747c63a8539c16f

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Merge pull request #423 from jcastillo-arm/jc/genfw/1211

Remove deprecated IO return definitions

Merge pull request #421 from sandrine-bailleux/sb/improve-display_boot_progress

Improve images transitions debugging messages

Merge pull request #422 from achingupta/bj/juno_r2_support

Add Cortex-A72 support for Juno R2

Add A72 support for Juno R2

Cortex-A72 library support is now compiled into the Juno platform port to go
with the existing A53/A57 support. This enables a single set of Juno TF
binaries to run on Ju

Add A72 support for Juno R2

Cortex-A72 library support is now compiled into the Juno platform port to go
with the existing A53/A57 support. This enables a single set of Juno TF
binaries to run on Juno R0, R1 and R2 boards.

Change-Id: I4a601dc4f671e98bdb19d98bbb66f02f0d8b7fc7

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Remove deprecated IO return definitions

Patch 7e26fe1f deprecates IO specific return definitions in favour
of standard errno codes. This patch removes those definitions
and its usage from the IO fra

Remove deprecated IO return definitions

Patch 7e26fe1f deprecates IO specific return definitions in favour
of standard errno codes. This patch removes those definitions
and its usage from the IO framework, IO drivers and IO platform
layer. Following this patch, standard errno codes must be used
when checking the return value of an IO function.

Change-Id: Id6e0e9d0a7daf15a81ec598cf74de83d5768650f

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Improve display_boot_progress() function

- Remove out-dated information about the use of printf() in the
function comment.

- Make the argument const, as the function doesn't need to modify it.

Improve display_boot_progress() function

- Remove out-dated information about the use of printf() in the
function comment.

- Make the argument const, as the function doesn't need to modify it.

- Rename the function into bl1_print_bl31_ep_info() to make its
purpose clearer.

Change-Id: I2a9d215a37f0ec11aefce0c5c9e050473b7a6b25

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Introduce print_entry_point_info() function

This patch introduces a new function called 'print_entry_point_info'
that prints an entry_point_t structure for debugging purposes.
As such, it can be use

Introduce print_entry_point_info() function

This patch introduces a new function called 'print_entry_point_info'
that prints an entry_point_t structure for debugging purposes.
As such, it can be used to display the entry point address, SPSR and
arguments passed from a firmware image to the next one.

This function is now called in the following images transitions:
- BL1 to BL2
- BL1 to BL31
- BL31 to the next image (typically BL32 or BL33)

The following changes have been introduced:

- Fix the output format of the SPSR value : SPSR is a 32-bit value,
not a 64-bit one.

- Print all arguments values.
The entry_point_info_t structure allows to pass up to 8 arguments.
In most cases, only the first 2 arguments were printed.
print_entry_point_info() now prints all of them as 'VERBOSE'
traces.

Change-Id: Ieb384bffaa7849e6cb95a01a47c0b7fc2308653a

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Merge pull request #418 from soby-mathew/sm/sys_suspend

Support SYSTEM SUSPEND on Juno

Merge pull request #419 from soby-mathew/sm/tf-issues#318

Include xlat_tables.h in plat_arm.h

Include xlat_tables.h in plat_arm.h

This patch fixes a compilation issue for platforms that are aligned to ARM
Standard platforms and include the `plat_arm.h` header in their platform port.
The comp

Include xlat_tables.h in plat_arm.h

This patch fixes a compilation issue for platforms that are aligned to ARM
Standard platforms and include the `plat_arm.h` header in their platform port.
The compilation would fail for such a platform because `xlat_tables.h` which
has the definition for `mmap_region_t` is not included in `plat_arm.h`. This
patch fixes this by including `xlat_tables.h` in `plat_arm.h` header.

Fixes ARM-Software/tf-issues#318

Change-Id: I75f990cfb4078b3996fc353c8cd37c9de61d555e

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Doc: Add instructions to test SYSTEM SUSPEND

This patch adds instructions to the user-guide.md to test SYSTEM SUSPEND
on Juno.

Change-Id: Icd01d10e1c1fb14b0db880d0ff134e505f097d2b

Support PSCI SYSTEM SUSPEND on Juno

This patch adds the capability to power down at system power domain level
on Juno via the PSCI SYSTEM SUSPEND API. The CSS power management helpers
are modified t

Support PSCI SYSTEM SUSPEND on Juno

This patch adds the capability to power down at system power domain level
on Juno via the PSCI SYSTEM SUSPEND API. The CSS power management helpers
are modified to add support for power management operations at system
power domain level. A new helper for populating `get_sys_suspend_power_state`
handler in plat_psci_ops is defined. On entering the system suspend state,
the SCP powers down the SYSTOP power domain on the SoC and puts the memory
into retention mode. On wakeup from the power down, the system components
on the CSS will be reinitialized by the platform layer and the PSCI client
is responsible for restoring the context of these system components.

According to PSCI Specification, interrupts targeted to cores in PSCI CPU
SUSPEND should be able to resume it. On Juno, when the system power domain
is suspended, the GIC is also powered down. The SCP resumes the final core
to be suspend when an external wake-up event is received. But the other
cores cannot be woken up by a targeted interrupt, because GIC doesn't
forward these interrupts to the SCP. Due to this hardware limitation,
we down-grade PSCI CPU SUSPEND requests targeted to the system power domain
level to cluster power domain level in `juno_validate_power_state()`
and the CSS default `plat_arm_psci_ops` is overridden in juno_pm.c.

A system power domain resume helper `arm_system_pwr_domain_resume()` is
defined for ARM standard platforms which resumes/re-initializes the
system components on wakeup from system suspend. The security setup also
needs to be done on resume from system suspend, which means
`plat_arm_security_setup()` must now be included in the BL3-1 image in
addition to previous BL images if system suspend need to be supported.

Change-Id: Ie293f75f09bad24223af47ab6c6e1268f77bcc47

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CSS: Implement topology support for System power domain

This patch implements the necessary topology changes for supporting
system power domain on CSS platforms. The definition of PLAT_MAX_PWR_LVL a

CSS: Implement topology support for System power domain

This patch implements the necessary topology changes for supporting
system power domain on CSS platforms. The definition of PLAT_MAX_PWR_LVL and
PLAT_NUM_PWR_DOMAINS macros are removed from arm_def.h and are made platform
specific. In addition, the `arm_power_domain_tree_desc[]` and
`arm_pm_idle_states[]` are modified to support the system power domain
at level 2. With this patch, even though the power management operations
involving the system power domain will not return any error, the platform
layer will silently ignore any operations to the power domain. The actual
power management support for the system power domain will be added later.

Change-Id: I791867eded5156754fe898f9cdc6bba361e5a379

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Merge pull request #415 from jcastillo-arm/jc/plat_err_handler

Add optional platform error handler API

Merge pull request #416 from davwan01/dw/css-common

Allow CSS to redefine function `plat_arm_calc_core_pos`

Add optional platform error handler API

This patch adds an optional API to the platform port:

void plat_error_handler(int err) __dead2;

The platform error handler is called when there is a spe

Add optional platform error handler API

This patch adds an optional API to the platform port:

void plat_error_handler(int err) __dead2;

The platform error handler is called when there is a specific error
condition after which Trusted Firmware cannot continue. While panic()
simply prints the crash report (if enabled) and spins, the platform
error handler can be used to hand control over to the platform port
so it can perform specific bookeeping or post-error actions (for
example, reset the system). This function must not return.

The parameter indicates the type of error using standard codes from
errno.h. Possible errors reported by the generic code are:

-EAUTH : a certificate or image could not be authenticated
(when Trusted Board Boot is enabled)
-ENOENT : the requested image or certificate could not be found
or an IO error was detected
-ENOMEM : resources exhausted. Trusted Firmware does not use
dynamic memory, so this error is usually an indication
of an incorrect array size

A default weak implementation of this function has been provided.
It simply implements an infinite loop.

Change-Id: Iffaf9eee82d037da6caa43b3aed51df555e597a3

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Merge pull request #417 from jcastillo-arm/jc/makefile_2

Makefile rework and bug fix #2

Make: fix dependency files generation

Currently, if no make goal is specified in the command line, 'all'
is assumed by default, but the dependency files are not generated.
This might lead to a succe

Make: fix dependency files generation

Currently, if no make goal is specified in the command line, 'all'
is assumed by default, but the dependency files are not generated.
This might lead to a successful but inconsistent build. This patch
provides a fix to the problem.

Change-Id: I0148719e114dbdbe46f8a57c7d05da7cbc212c92

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Rework Makefile

This patch is a complete rework of the main Makefile. Functionality
remains the same but the code has been reorganized in sections in
order to improve readability and facilitate addi

Rework Makefile

This patch is a complete rework of the main Makefile. Functionality
remains the same but the code has been reorganized in sections in
order to improve readability and facilitate adding future extensions.

A new file 'build_macros.mk' has been created and will contain common
definitions (variables, macros, etc) that may be used from the main
Makefile and other platform specific makefiles.

A new macro 'FIP_ADD_IMG' has been introduced and it will allow the
platform to specify binary images and the necessary checks for a
successful build. Platforms that require a BL30 image no longer need
to specify the NEED_BL30 option. The main Makefile is now completely
unaware of additional images not built as part of Trusted Firmware,
like BL30. It is the platform responsibility to specify images using
the macro 'FIP_ADD_IMG'. Juno uses this macro to include the BL30
image in the build.

BL33 image is specified in the main Makefile to preserve backward
compatibility with the NEED_BL33 option. Otherwise, platform ports
that rely on the definition of NEED_BL33 might break.

All Trusted Board Boot related definitions have been moved to a
separate file 'tbbr_tools.mk'. The main Makefile will include this
file unless the platform indicates otherwise by setting the variable
'INCLUDE_TBBR_MK := 0' in the corresponding platform.mk file. This
will keep backward compatibility but ideally each platform should
include the corresponding TBB .mk file in platform.mk.

Change-Id: I35e7bc9930d38132412e950e20aa2a01e2b26801

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