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Unless specified in the environment, $(CC) expands to some generic
host C compiler like cc or c99. We set our own value for $(CC), but
only few lines later.

Move the first use of the $(CC) variable behind the definition to
correct this.

Change-Id: I45344e063d21ddfe22b7ad77954e85c1c46087bd
Fixes: 1684b873

 ("Use clang assembler when clang compiler is used")
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>

sp_min.ld.S is used for aarch32.

ALIGN(4) is used for alignment of the other structures. I do not think
struct fconf_populator is a special case. Let's use ALIGN(4) here too.

Perhaps, this is just a copy-paste mistake of commit 26d1e0c3


("fconf: necessary modifications to support fconf in BL31 & SP_MIN").

Change-Id: I29f4c68680842c1b5ef913934b4ccf378e9bfcfb
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

-D is a preprocessor flag that defines a macro. So, adding it to
BL*_CPPFLAGS makes more sense. You can reference it not only from
.c files but also from .S files.

Change-Id: Ib4f2f27a3ed3eae476a6a32da7ab5225ad0649de
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

Currently, BL*_CFLAGS and BL*_LDFLAGS are supported.

For completion, this adds BL*_CPPFLAGS and BL*_ASFLAGS.

My main motivation is to pass -D<macro> to BL*_CPPFLAGS so that
the macro can be used from all source files.

Change-Id: I0ca1e4e26386bef7fed999af140ee7cce7c2f8ef
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

1. Necessary changes to platform makefile to include fw_config
device tree and package it in fip.bin

2. Removed hw_config node from fw_config dts as there is no
HW_CONFIG device tree source for sgm775

3. Added mbedtls_heap related properties for TBBR functionality

Change-Id: I26b940c65b17ad2fb5537141f8649785bb0fd4ad
Signed-off-by: Madhukar Pappireddy <madhukar.pappireddy@arm.com>

* changes:
  stm32mp1: use stm32mp_get_ddr_ns_size() function
  stm32mp1: set XN attribute for some areas in BL2
  stm32mp1: dynamically map DDR later and non-cacheable during its test
  stm32mp1: add a function to get non-secure DDR size

Moved SMCCC defines from plat_arm.h to new <smccc_def.h> header
and include this header in all ARM platforms.
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Change-Id: I4cbc69c7b9307461de87b7c7bf200dd9b810e485

This patch moves all GICv3 driver files into new added
'gicv3.mk' makefile for the benefit of the generic driver
which can evolve in the future without affecting platforms.
The patch adds GICv3 driver configuration flags
'GICV3_IMPL', 'GICV3_IMPL_GIC600_MULTICHIP' and
'GICV3_OVERRIDE_DISTIF_PWR_OPS' described in
'GICv3 driver options' section of 'build-option.rst'
document.

NOTE: Platforms with GICv3 driver need to be modified to
include 'drivers/arm/gic/v3/gicv3.mk' in their makefiles.

Change-Id: If055f6770ff20f5dee5a3c99ae7ced7cdcac5c44
Signed-off-by: Alexei Fedorov <Alexei.Fedorov@arm.com>

Use ARRAY_SIZE macro instead of sizeof operator to obtain the maximum
number of SCMI channels supported on the platform.

Change-Id: Id922bb548af98ac99b4ac0c34e38e589e5a80b2d
Signed-off-by: Aditya Angadi <aditya.angadi@arm.com>

* changes:
  plat/arm/board/arm_fpga: Compile with additional CPU libraries
  plat/arm/board/arm_fpga: Enable position-independent execution
  plat/arm/board/arm_fpga: Enable port for alternative cluster configurations
  plat/arm/board/arm_fpga: Initialize the Generic Interrupt Controller
  plat/arm/board/arm_fpga: Initialize the System Counter
  plat/arm/board/arm_fpga: Add PSCI implementation for FPGA images
  plat/arm/board/arm_fpga: Use preloaded BL33 alternative boot flow
  plat/arm/board/arm_fpga: Enable basic BL31 port for an FPGA image

On DynamIQ CPU FVPs, stats test cases are failing when
hardware-assisted coherency is enabled due to a corrupt
timestamp value. Investigation of the issue indicates that
on these models the timestamp value is stored in cache
instead of memory. This patch flushes the dcache when the
timestamp is stored to make sure it is stored in memory.

Change-Id: I05cd54ba5991a5a96dd07f1e08b5212273201411
Signed-off-by: Zelalem <zelalem.aweke@arm.com>

Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Change-Id: I93892dbe76611a7a4b852af3272a0e6271ae037b

Notify if fw_config dt is either not available or not loaded from fip.

Change-Id: I4dfcbe5032503d97f532a3287c5312c581578b68
Signed-off-by: Manish Pandey <manish.pandey2@arm.com>

This change is part of the goal of enabling the port to be compatible
with multiple FPGA images.

BL31 behaves differently depending on whether or not the CPUs in the
system use cache coherency, and as a result any CPU libraries that are
compiled together must serve processors that are consistent in this
regard.

This compiles a different set of CPU libraries depending on whether or
not the HW_ASSISTED_COHERENCY is enabled at build-time to indicate the
CPUs support hardware-level support for cache coherency. This build
flag is used in the makefile in the same way as the Arm FVP port.
Signed-off-by: Oliver Swede <oli.swede@arm.com>
Change-Id: I18300b4443176b89767015e3688c0f315a91c27e

This allows the BL31 port to run with position-independent execution
enabled so that it can be ran from any address in the system.
This increases the flexibility of the image, allowing it to be ran from
other locations rather than only its hardcoded absolute address
(currently set to the typical DRAM base of 2GB). This may be useful for
future images that describe system configurations with other memory
layouts (e.g. where SRAM is included).

It does this by setting ENABLE_PIE=1 and changing the absolute
address to 0. The load address of bl31.bin can then be specified by
the -l [load address] argument in the fpga-run command (additionally,
this address is required by any preceding payloads that specify the
start address. For ELF payloads this is usually extracted automatically
by reading the entrypoint address in the header, however bl31.bin is a
different file format so has this additional dependency).
Signed-off-by: Oliver Swede <oli.swede@arm.com>
Change-Id: Idd74787796ab0cf605fe2701163d9c4b3223a143

This change is part of the goal of enabling the port to be compatible
with multiple FPGA images.

The BL31 port that is uploaded as a payload to the FPGA with an image
should cater for a wide variety of system configurations. This patch
makes the necessary changes to enable it to function with images whose
cluster configurations may be larger (either by utilizing more
clusters, more CPUs per cluster, more threads in each CPU, or a
combination) than the initial image being used for testing.

As part of this, the hard-coded values that configure the size of the
array describing the topology of the power domain tree are increased
to max. 8 clusters, max. 8 cores per cluster & max 4 threads per core.
This ensures the port works with cluster configurations up to these
sizes. When there are too many entries for the number of available PEs,
e.g. if there is a variable number of CPUs between clusters, then there
will be empty entries in the array. This is permitted and the PSCI
library will still function as expected. While this increases its size,
this shouldn't be an issue in the context of the size of BL31, and is
worth the trade-off for the extra compatibility.
Signed-off-by: Oliver Swede <oli.swede@arm.com>
Change-Id: I7d4ae1e20b2e99fdbac428d122a2cf9445394363

This initializes the GIC using the Arm GIC drivers in TF-A.
The initial FPGA image uses a GIC600 implementation, and so that its
power controller is enabled, this platform port calls the corresponding
implementation-specific routines.
Signed-off-by: Oliver Swede <oli.swede@arm.com>
Change-Id: I88d5a073eead4b653b1ca73273182cd98a95e4c5

This sets the frequency of the system counter so that the Delay Timer
driver programs the correct value to CNTCRL. This value depends on
the FPGA image being used, and is 10MHz for the initial test image.
Once configured, the BL31 platform setup sequence then enables the
system counter.
Signed-off-by: Oliver Swede <oli.swede@arm.com>
Change-Id: Ieb036a36fd990f350b5953357424a255b8ac5d5a

This adds a basic PSCI implementation allow secondary CPUs to be
released from an initial state and continue through to the warm boot
entrypoint.

Each secondary CPU is kept in a holding pen, whereby it polls the value
representing its hold state, by reading this from an array that acts as
a table for all the PEs. The hold states are initially set to 0 for all
cores to indicate that the executing core should continue polling.
To prevent the secondary CPUs from interfering with the platform's
initialization, they are only updated by the primary CPU once the cold
boot sequence has completed and fpga_pwr_domain_on(mpidr) is called.
The polling target CPU will then read 1 (which indicates that it should
branch to the warm reset entrypoint) and then jump to that address
rather than continue polling.

In addition to the initial polling behaviour of the secondary CPUs
before their warm boot reset sequence, they are also placed in a
low-power wfe() state at the end of each poll; accordingly, the PSCI
fpga_pwr_domain_on(mpidr) function also signals an event to all cores
(after updating the target CPU's hold entry) to wake them from this
state, allowing any secondary CPUs that are still polling to check
their hold state again.
This method is in accordance with both the PSCI and Linux kernel
recommendations, as the lessened overhead reduces the energy
consumption associated with the busy-loop.

The table of hold entries is implemented by a global array as shared SRAM
(which is used by other platforms in similar implementations) is not
available on the FPGA images.
Signed-off-by: Oliver Swede <oli.swede@arm.com>
Change-Id: I65cfd1892f8be1dfcb285f0e1e94e7a9870cdf5a

This makes use of the PRELOADED_BL33_BASE flag to indicate to BL31 that
the BL33 payload (kernel) has already been loaded and resides in memory;
BL31 will then jump to the non-secure address.

For this port the BL33 payload is the Linux kernel, and in accordance
with the pre-kernel setup requirements (as specified in the `Booting
AArch64 Linux' documentation:
https://www.kernel.org/doc/Documentation/arm64/booting.txt

),
this change also sets up the primary CPU's registers x0-x3 so they are
the expected values, which includes the address of the DTB at x0.

An external linker script is currently required to combine BL31, the
BL33 payload, and any other software images to create an ELF file that
can be uploaded to the FPGA board along with the bit file. It therefore
has dependencies on the value of PRELOADED_BL33_BASE (kernel base) and
the DTB base (plus any other relevant base addresses used to
distinguish the different ELF sections), both of which are set in this
patch.
Signed-off-by: Oliver Swede <oli.swede@arm.com>
Change-Id: If7ae8ee82d1e09fb05f553f6077ae13680dbf66b

This adds the minimal functions and definitions to create a basic
BL31 port for an initial FPGA image, in order for the port to be
uploaded to one the FPGA boards operated by an internal group within
Arm, such that BL31 runs as a payload for an image.

Future changes will enable the port for a wide range of system
configurations running on the FPGA boards to ensure compatibility with
multiple FPGA images.

It is expected that this will replace the FPGA fork of the Linux kernel
bootwrapper by performing similar secure-world initialization and setup
through the use of drivers and other well-established methods, before
passing control to the kernel, which will act as the BL33 payload and
run in EL2NS.

This change introduces a basic, loadable port with the console
initialized by setting the baud rate and base address of the UART as
configured by the Zeus image.

It is a BL31-only port, and RESET_TO_BL31 is enabled to reflect this.
Signed-off-by: Oliver Swede <oli.swede@arm.com>
Change-Id: I1817ad81be00afddcdbbda1ab70eb697203178e2

Instead of using dt_get_ddr_size() and withdrawing the secure and shared
memory areas, use stm32mp_get_ddr_ns_size() function.

Change-Id: I5608fd7873589ea0e1262ba7d2ee3e52b53d9a7d
Signed-off-by: Yann Gautier <yann.gautier@st.com>

DTB and BL32 area should not be set as executable in MMU during BL2
execution, hence set those areas as MT_RO_DATA.

Change-Id: I87c47a1e7fda761e541ec98a5b294588384d31db
Signed-off-by: Yann Gautier <yann.gautier@st.com>

A speculative accesses to DDR could be done whereas it was not reachable
and could lead to bus stall.
To correct this the dynamic mapping in MMU is used.
A first mapping is done for DDR tests with MT_NON_CACHEABLE attribute,
once DDR access is setup. It is then unmapped and a new mapping DDR is done
with cacheable attribute (through MT_MEMORY) to speed-up BL33 (or OP-TEE)
load.

The disabling of cache during DDR tests is also removed, as now useless.
A call to new functions stm32mp_{,un}map_ddr_non_cacheable() is done
instead.

PLAT_XLAT_TABLES_DYNAMIC is activated globally as used in BL2 and BL32.

BL33 max size is also updated to take into account the secure and shared
memory areas. Those are used in OP-TEE case.

Change-Id: I22c48b4a48255ee264991c34ecbb15bfe87e67c3
Signed-off-by: Yann Gautier <yann.gautier@st.com>

This function gets the DDR size from DT, and withdraws (if defined) the
sizes of secure DDR and shared memory areas.
This function also checks DT values fits the default DDR range.
This non-secure memory is available for BL33 and non-secure OS.

Change-Id: I162ae5e990a0f9b6b7d07e539de029f1d61a391b
Signed-off-by: Yann Gautier <yann.gautier@st.com>