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After returning from SYSTEM_SUSPEND state, BL31 reconfigures the
TrustZone Controller during the boot sequence. If BL31 is placed in
TZC-secured DRAM, it will try to change the permissions of the memory it
is being executed from, causing an exception.

The solution is to disable SYSTEM_SUSPEND when the Trusted Firmware has
been compiled with ``ARM_BL31_IN_DRAM=1``.

Change-Id: I96dc50decaacd469327c6b591d07964726e58db4
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Common code mustn't include ARM platforms headers.

Change-Id: Ib6e4f5a77c2d095e6e8c3ad89c89cb1959cd3043
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

This patch allows non-secure bus masters to access TZC region0 as well
as the EL3 Payload itself.

Change-Id: I7e44f2673a2992920d41503fb4c57bd7fb30747a
Signed-off-by: Soby Mathew <soby.mathew@arm.com>

Pre-v8.2 platforms such as the Juno platform does not have
the Scalable Vector Extensions implemented and so the build
option ENABLE_SVE is set to zero.

This has a minor performance improvement with no functional
impact.

Change-Id: Ib072735db7a0247406f8b60e325b7e28b1e04ad1
Signed-off-by: David Cunado <david.cunado@arm.com>

The bl2_early_platform_setup() and bl2_platform_setup() were
redefined for Juno AArch32 eventhough CSS platform layer had
same definition for them. The CSS definitions definitions were
previously restricted to EL3_PAYLOAD_BASE builds and this is now
modified to include the Juno AArch32 builds as well thus
allowing us to remove the duplicate definitions in Juno platform
layer.

Change-Id: Ibd1d8c1428cc1d51ac0ba90f19f5208ff3278ab5
Signed-off-by: Soby Mathew <soby.mathew@arm.com>

This patch fixes a couple of issues for AArch32 builds on ARM reference
platforms :

1. The arm_def.h previously defined the same BL32_BASE value for AArch64 and
   AArch32 build. Since BL31 is not present in AArch32 mode, this meant that
   the BL31 memory is empty when built for AArch32. Hence this patch allocates
   BL32 to the memory region occupied by BL31 for AArch32 builds.

   As a side-effect of this change, the ARM_TSP_RAM_LOCATION macro cannot
   be used to control the load address of BL32 in AArch32 mode which was
   never the intention of the macro anyway.

2. A static assert is added to sp_min linker script to check that the progbits
   are within the bounds expected when overlaid with other images.

3. Fix specifying `SPD` when building Juno for AArch32 mode. Due to the quirks
   involved when building Juno for AArch32 mode, the build option SPD needed to
   specifed. This patch corrects this and also updates the documentation in the
   user-guide.

4. Exclude BL31 from the build and FIP when building Juno for AArch32 mode. As
   a result the previous assumption that BL31 must be always present is removed
   and the certificates for BL31 is only generated if `NEED_BL31` is defined.

Change-Id: I1c39bbc0abd2be8fbe9f2dea2e9cb4e3e3e436a8
Signed-off-by: Soby Mathew <soby.mathew@arm.com>

Change-Id: I96de88f44c36681ad8a70430af8e01016394bd14
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>

Factor out SPE operations in a separate file.  Use the publish
subscribe framework to drain the SPE buffers before entering secure
world.  Additionally, enable SPE before entering normal world.

A side effect of this change is that the profiling buffers are now
only drained when a transition from normal world to secure world
happens.  Previously they were drained also on return from secure
world, which is unnecessary as SPE is not supported in S-EL1.

Change-Id: I17582c689b4b525770dbb6db098b3a0b5777b70a
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>

Support SDEI on ARM platforms using frameworks implemented in earlier
patches by defining and exporting SDEI events: this patch defines the
standard event 0, and a handful of shared and private dynamic events.

Change-Id: I9d3d92a92cff646b8cc55eabda78e140deaa24e1
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>

Define number of priority bits, and allocate priority levels for SDEI.

Change-Id: Ib6bb6c5c09397f7caef950c4caed5a737b3d4112
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>

Provide a strong definition for plat_sdei_validate_sdei_entrypoint()
which translates client address to Physical Address, and then validating
the address to be present in DRAM.

Change-Id: Ib93eb66b413d638aa5524d1b3de36aa16d38ea11
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>

The function arm_validate_ns_entrypoint() validates a given non-secure
physical address. This function however specifically returns PSCI error
codes.

Non-secure physical address validation is potentially useful across ARM
platforms, even for non-PSCI use cases. Therefore make this function
common by returning 0 for success or -1 otherwise.

Having made the function common, make arm_validate_psci_entrypoint() a
wrapper around arm_validate_ns_entrypoint() which only translates return
value into PSCI error codes. This wrapper is now used where
arm_validate_ns_entrypoint() was currently used for PSCI entry point
validation.

Change-Id: Ic781fc3105d6d199fd8f53f01aba5baea0ebc310
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>

This patch brings in the following fixes:

  - The per-PE target data initialized during power up needs to be
    flushed so as to be visible to other PEs.

  - Setup per-PE target data for the primary PE as well. At present,
    this was only setup for secondary PEs when they were powered on.

Change-Id: Ibe3a57c14864e37b2326dd7ab321a5c7bf80e8af
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>

This initial port of the Secure Partitions Manager to FVP supports BL31
in both SRAM and Trusted DRAM.

A document with instructions to build the SPM has been added.

Change-Id: I4ea83ff0a659be77f2cd72eaf2302cdf8ba98b32
Co-authored-by: Douglas Raillard <douglas.raillard@arm.com>
Co-authored-by: Sandrine Bailleux <sandrine.bailleux@arm.com>
Co-authored-by: Achin Gupta <achin.gupta@arm.com>
Co-authored-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

ARM_TSP_RAM_LOCATION_ID was defined only in AARCH64, but the macro
was also used in AARCH32, and it meant that it was taking the value 0,
which happened to equal ARM_TRUSTED_SRAM_ID.

Change-Id: If9f4dbee1a2ba15e7806f2a03305b554bd327363
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

For Trusted Board Boot, BL2 needs more space to support the ECDSA
and ECDSA+RSA algorithms.

Change-Id: Ie7eda9a1315ce836dbc6d18d6588f8d17891a92d
Signed-off-by: Qixiang Xu <qixiang.xu@arm.com>

On Arm standard platforms, it runs out of SRAM space when TBB is
enabled, so the TSP default location is changed to dram when TBB
is enabled.

Change-Id: I516687013ad436ef454d2055d4e6fce06e467044
Signed-off-by: Qixiang Xu <qixiang.xu@arm.com>

An earlier patch added provision for the platform to provide secure
interrupt properties. ARM platforms already has a list of interrupts
that fall into different secure groups.

This patch defines macros that enumerate interrupt properties in the
same fashion, and points the driver driver data to a list of interrupt
properties rather than list of secure interrupts on ARM platforms.  The
deprecated interrupt list definitions are however retained to support
legacy builds.

Configuration applied to individual interrupts remain unchanged, so no
runtime behaviour change expected.

NOTE: Platforms that use the arm/common function
plat_arm_gic_driver_init() must replace their PLAT_ARM_G1S_IRQS and
PLAT_ARM_G0_IRQS macro definitions with PLAT_ARM_G1S_IRQ_PROPS and
PLAT_ARM_G0_IRQ_PROPS macros respectively, using the provided
INTR_PROP_DESC macro.

Change-Id: I24d643b83e3333753a3ba97d4b6fb71e16bb0952
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>

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

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

This function implements the platform dependant part of PSCI system
reset2 for CSS platforms using SCMI.

Change-Id: I724389decab484043cadf577aeed96b349c1466d
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

The common implementation of css_scp_sys_shutdown and
css_scp_warm_reset is refactored into a new function,
css_scp_system_off() that allows the desired power state to be
specified.

The css_scp_system_off can be used in the implementation of
SYSTEM_RESET2 for PSCI v1.1.

Change-Id: I161e62354d3d75f969b8436d794335237520a9a4
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

Provides GICv3 save/restore feature to arm_system_pwr_domain_resume and
arm_system_pwr_domain_save functions.

Introduce FVP PSCI power level 3 (System level) support. This is solely
done to provide example code on how to use the GICv3 save and restore
helpers.

Also make CSS GICv3 platforms power off the Redistributor on SYSTEM
SUSPEND as its state is saved and restored.

Change-Id: I0d852f3af8824edee1a17c085cf593ddd33a4e77
Signed-off-by: Soby Mathew <soby.mathew@arm.com>
Co-Authored-by: Douglas Raillard <douglas.raillard@arm.com>

Some recent enhancements to EL3 runtime firmware like support for
save and restoring GICv3 register context during system_suspend
necessitates additional data memory for the firmware. This patch
introduces support for creating a TZC secured DDR carveout for use
by ARM reference platforms. A new linker section `el3_tzc_dram` is
created using platform supplied linker script and data marked with
the attribute `arm_el3_tzc_dram` will be placed in this section.
The FVP makefile now defines the `PLAT_EXTRA_LD_SCRIPT` variable to
allow inclusion of the platform linker script by the top level BL31
linker script.

Change-Id: I0e7f4a75a6ac51419c667875ff2677043df1585d
Signed-off-by: Soby Mathew <soby.mathew@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>

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>

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>

    - fixed compile error when KEY_ALG=ecdsa
    - add new option ecdsa for TF_MBEDTLS_KEY_ALG
    - add new option devel_ecdsa for ARM_ROTPK_LOCATION
    - add ecdsa key at plat/arm/board/common/rotpk/
    - reduce the mbedtls heap memory size to 13k

Change-Id: I3f7a6170af93fdbaaa7bf2fffb4680a9f6113c13
Signed-off-by: Qixiang Xu <qixiang.xu@arm.com>

For Trusted Board Boot, BL1 RW section and BL2 need more space to
support the ECDSA algorithm. Specifically, PLAT_ARM_MAX_BL1_RW_SIZE
is increased on ARM platforms.

And on the Juno platform:
    - BL2 size, PLAT_ARM_MAX_BL2_SIZE is increased.
    - SCP_BL2 is loaded into the space defined by BL31_BASE ->
      BL31_RW_BASE. In order to maintain the same size space for
      SCP_BL2,PLAT_ARM_MAX_BL31_SIZE is increased.

Change-Id: I379083f918b40ab1c765da4e71780d89f0058040
Co-Authored-By: David Cunado <david.cunado@arm.com>
Signed-off-by: Qixiang Xu <qixiang.xu@arm.com>

platform_def.h doesn't need all the definitions in utils.h,
the ones in utils_def.h are enough. This patch is related
to the changes introduced by commit 53d9c9c8

.

Change-Id: I4b2ff237a2d7fe07a7230e0e49b44b3fc2ca8abe
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>

Earlier patches added errata workarounds 859972 for Cortex-A72, and
859972 for Cortex-A57 CPUs. Explicitly disable the workaround for Juno.

Also reorganize errata workaround flags.

No functional changes.

Change-Id: I3fe3745de57d77e5bf52012826d3969fe5d4844e
Signed-off-by: Eleanor Bonnici <Eleanor.bonnici@arm.com>
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>

This patch does the required changes to enable CSS platforms
to build and use the SDS framework. Since SDS is always coupled with
SCMI protocol, the preexisting SCMI build flag is now renamed to
`CSS_USE_SCMI_SDS_DRIVER` which will enable both SCMI and SDS on
CSS platforms. Also some of the workarounds applied for SCMI are
now removed with SDS in place.

Change-Id: I94e8b93f05e3fe95e475c5501c25bec052588a9c
Signed-off-by: Soby Mathew <soby.mathew@arm.com>

This patch introduces the driver for Shared-Data-Structure (SDS)
framework which will be used for communication between SCP and AP
CPU. The SDS framework is intended to replace the Boot-Over-MHU
(BOM) protocol used currently for the communication

Change-Id: Ic174291121f4e581b174cce3389d22d6435f7269
Signed-off-by: Soby Mathew <soby.mathew@arm.com>

This patch factors out common files required for sp_min for all CSS
platforms from the JUNO specific makefile to a the new `css_sp_min.mk`
makefile. This also allows the common build options that affect CSS
platforms to be configured in a central makefile for sp_min.

Change-Id: Ida952d8833b1aa5eda77ae0a6664a4632aeab24c
Signed-off-by: Soby Mathew <soby.mathew@arm.com>

plat_get_my_entrypoint was branching to juno_do_reset_to_aarch_32_state,
which is not supposed to return, and in case of returning it implemented
an infinite loop. The problem was that plat_get_my_entrypoint was using
"b" instead of "bl", so juno_do_reset_to_aarch_32_state was returning to
the caller of plat_get_my_entrypoint instead of stop the system with a
panic.

To avoid this problem juno_do_reset_to_aarch_32_state was modified to
call directly to plat_panic_handler if it tries to return.

Change-Id: I591cf2dd78d27d8568fb15b91366e4b3dce027b5
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

The commit 3eb2d672

 optimizes the memory map for BL2 when TSP
is not present. But this also broke OP-TEE as it was reusing
the TSP mapping. This patch fixes this problem by adding a
separate mapping for OP-TEE in the BL2 memory map table.

Change-Id: I130a2ea552b7b62d8478081feb1f4ddf5292a118
Signed-off-by: Soby Mathew <soby.mathew@arm.com>

The `KEY_ALG` variable is used to select the algorithm for key
generation by `cert_create` tool for signing the certificates. This
variable was previously undocumented and did not have a global default
value. This patch corrects this and also adds changes to derive the
value of `TF_MBEDTLS_KEY_ALG` based on `KEY_ALG` if it not set by the
platform. The corresponding assignment of these variables are also now
removed from the `arm_common.mk` makefile.
Signed-off-by: Soby Mathew <soby.mathew@arm.com>
Change-Id: I78e2d6f4fc04ed5ad35ce2266118afb63127a5a4

This patch ensures that the ARM_MAP_TSP_SEC_MEM memory region is mapped
in BL2 only if the TSPD has been included in the build. This saves one
entry in the plat_arm_mmap[] array and avoids to map extra memory when
it's not needed.

Change-Id: I6ae60822ff8f0de198145925b0b0d45355179a94
Signed-off-by: Achin Gupta <achin.gupta@arm.com>
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>

This patch fixes the PLAT_LOG_LEVEL_ASSERT to 40 which corresponds
to LOG_LEVEL_INFO. Having this level of log for assertions means that the
`assert()` will not generate the strings implied in the expression taken
as parameter. This allows to save some memory when Juno is built for
LOG_LEVEL = LOG_LEVEL_VERBOSE and DEBUG = 1.

Fixes ARM-software/tf-issues#511

Change-Id: Id84a40f803ab07a5a8f6e587167af96694a07d04
Signed-off-by: Soby Mathew <soby.mathew@arm.com>

zero_normalmem only can zero memory when caches are enabled
and the target memory is a normal memory, otherwise an abort is
generated. In the case of EL3_PAYLOAD_BASE bl2_platform_setup was
calling zero_normalmem with device memory and it generated an abort.

Change-Id: If013603f209a12af488a9c54481f97a8f395b26a
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>