Standardise header guards across codebase ...

All identifiers, regardless of use, that start with two underscores are
reserved. This means they can't be used in header guards.

The style that this project is now to use the full name of the file in
capital letters followed by 'H'. For example, for a file called
"uart_example.h", the header guard is UART_EXAMPLE_H.

The exceptions are files that are imported from other projects:

- CryptoCell driver
- dt-bindings folders
- zlib headers

Change-Id: I50561bf6c88b491ec440d0c8385c74650f3c106e
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

plat/arm: Fix MISRA defects in common code ...

Change-Id: I2419416fadfcdf64da8b7690a348007591c4edf3
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

plat/arm: Fix types of constants in headers ...

Change-Id: I33eaee8e7c983b3042635a448cb8d689ea4e3a12
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

FVP: Enable PIE for RESET_TO_BL31=1 ...

This patch enabled PIE for FVP when RESET_TO_BL31=1. The references
to BL31_BASE are replaced by BL31_START as being a symbol exported by
the linker, will create a dynamic relocation entry in .rela.dyn and
hence will be fixed up by dynamic linker at runtime. Also, we disable
RECLAIM_INIT_CODE when PIE is enabled as the init section overlay
creates some static relocations which cannot be handled by the
dynamic linker currently.

Change-Id: I86df1b0a8b2a8bbbe7c3f3c0b9a08c86c2963ec0
Signed-off-by: Soby Mathew <soby.mathew@arm.com>

plat/arm: Use `mov_imm` macro to load immediate values ...

This patch makes use of mov_imm macro where possible to load
immediate values within ARM platform layer.

Change-Id: I02bc7fbc1fa334c9fccf76fbddf515952f9a1298
Signed-off-by: Soby Mathew <soby.mathew@arm.com>

Convert arm_setup_page_tables into a generic helper ...

This function is not related to Arm platforms and can be reused by other
platforms if needed.

Change-Id: Ia9c328ce57ce7e917b825a9e09a42b0abb1a53e8
Co-authored-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

xlat: Fix compatibility between v1 and v2 ...

There are several platforms using arm_setup_page_tables(), which is
supposed to be Arm platform only. This creates several dependency
problems between platforms.

This patch adds the definition XLAT_TABLES_LIB_V2 to the xlat tables lib
v2 makefile. This way it is possible to detect from C code which version
is being used and include the correct header.

The file arm_xlat_tables.h has been renamed to xlat_tables_compat.h and
moved to a common folder. This way, when in doubt, this header can be
used to guarantee compatibility, as it includes the correct header based
on XLAT_TABLES_LIB_V2.

This patch also removes the usage of ARM_XLAT_TABLES_V1 from QEMU (so
that is now locked in xlat lib v2) and ZynqMP (where it was added as a
workaround).

Change-Id: Ie1e22a23b44c549603d1402a237a70d0120d3e04
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Merge pull request #1628 from antonio-nino-diaz-arm/an/sharing ...

plat/arm: Small reorganization of platform code

Merge pull request #1606 from satheesbalya-arm/sb1_2603_misra_plat ...

plat/arm: Fix misra warnings in platform code

plat/arm: Fix misra warnings in platform code ...

Change-Id: Ica944acc474a099219d50b041cfaeabd4f3d362f
Signed-off-by: Sathees Balya <sathees.balya@arm.com>

plat/arm: Remove file arm_board_def.h ...

This file is shared between FVP and all CSS platforms. While it may be
true that some definitions can be common, it doesn't make sense
conceptually. For example, the stack size depends on the platform and so
does the SRAM size.

After removing them, there are not enough common definitions to justify
having this header, so the other definitions have been moved to the
platform_def.h of FVP, board_css_def.h and arm_def.h.

Change-Id: Ifbf4b017227f9dfefa1a430f67d7d6baae6a4ba1
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Merge pull request #1619 from antonio-nino-diaz-arm/an/norflash ...

plat/arm: Move norflash driver to drivers/ folder

plat/arm: Move norflash driver to drivers/ folder ...

This way it can be reused by other platforms if needed.

Note that this driver is designed to work with the Versatile Express NOR
flash of Juno and FVP. In said platforms, the memory is organized as an
interleaved memory of two chips with a 16 bit word.

Any platform that wishes to reuse it with a different configuration will
need to modify the driver so that it is more generic.

Change-Id: Ic721758425864e0cf42b7b9b04bf0d9513b6022e
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Fix misra warnings in SMC and power mgmt code ...

Change-Id: Ia00eba2b18804e6498d935d33ec104953e0e5e03
Signed-off-by: Sathees Balya <sathees.balya@arm.com>

FVP: Reclaim init code for the stack ...

Map the initialization code for BL31 to overlap with the memory
required for the secondary cores stack. Once BL31 has been
initialized the memory can be remapped to RW data so that it can
be used for secondary cores stacks. By moving code from .text to
.text.init the size of the BL31 image is decreased by a page.

Split arm_common.ld.S into two linker scripts, one for tzc_dram
(arm_tzc_dram.ld.S) and one for reclaiming initialization code
(arm_reclaim_init.ld.S) so that platforms can chose which memory
regions they wish to include.

Change-Id: I648e88f3eda1aa71765744cf34343ecda9320b32
Signed-off-by: Daniel Boulby <daniel.boulby@arm.com>

plat/arm: Mark arm platform initialization functions ...

Mark the initialization functions found in the BL31 boot sequence
as __init so they can be reclaimed when no longer needed.

Change-Id: I687a89346419c7710ef5097feaa325d83c527697
Signed-off-by: Daniel Boulby <daniel.boulby@arm.com>

plat/arm: Remove option ARM_BOARD_OPTIMISE_MEM ...

This option makes it hard to optimize the memory definitions of all Arm
platforms because any change in the common defines must work in all of
them. The best thing to do is to remove it and move the definition to
each platform's header.

FVP, SGI and SGM were using the definitions in board_arm_def.h. The
definitions have been copied to each platform's platform_def.h. Juno
was already using the ones in platform_def.h, so there have been no
changes.

Change-Id: I9aecd11bbc72a3d0d7aad1ef9934d8df21dcfaf2
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

plat/arm: Migrate to new interfaces ...

- Remove references to removed build options.
- Remove support for legacy GIC driver.
- Remove support for LOAD_IMAGE_V2=0.

Change-Id: I72f8c05620bdf4a682765e6e53e2c04ca749a3d5
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Support shared Mbed TLS heap for FVP ...

This patch introduces the shared Mbed TLS heap optimisation for Arm
platforms. The objective is the Mbed TLS heap to be shared between BL1
and BL2 so as to not allocate the heap memory twice. To achieve that,
the patch introduces all the necessary helpers for implementing this
optimisation. It also applies it for FVP.

Change-Id: I6d85eaa1361517b7490956b2ac50f5fa0d0bb008
Signed-off-by: John Tsichritzis <john.tsichritzis@arm.com>

Fix MISRA defects in BL31 common code ...

Change-Id: I5993b425445ee794e6d2a792c244c0af53640655
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

memprotect: Move files to specific platform makefiles ...

All the arm platforms were including the files related to
mem-protect. This configuration generates some problems
with new platforms that don't support such functionality,
and for that reason this patch moves these files to the
platform specific makefiles.

Change-Id: I6923e5224668b76667795d8e11723cede7979b1e
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

ARM platforms: Allow board specific definition of SP stack base ...

The SGI platforms need to allocate memory for CPER buffers. These
platform buffers would be placed between the shared reserved memory
and the per cpu stack memory, thus the need to redefine stack base
pointer for these platforms. This patch allows each board in ARM
platform to define the PLAT_SP_IMAGE_STACK_BASE.

Change-Id: Ib5465448b860ab7ab0f645f7cb278a67acce7be9
Signed-off-by: Sughosh Ganu <sughosh.ganu@arm.com>

PSCI: Fix types of definitions ...

Also change header guards to fix defects of MISRA C-2012 Rule 21.1.

Change-Id: Ied0d4b0e557ef6119ab669d106d2ac5d99620c57
Acked-by: Sumit Garg <sumit.garg@linaro.org>
Acked-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Fix some violations to MISRA rule 8.3 ...

Wherever we use 'struct foo' and 'foo_t' interchangeably in a
function's declaration and definition, use 'struct foo' consistently
for both, as per the TF-A coding guidelines [1].

[1] https://github.com/ARM-software/arm-trusted-firmware/wiki/ARM-Trusted-Firmware-Coding-Guidelines#avoid-anonymous-typedefs-of-structsenums-in-header-files

Change-Id: I7998eb24a26746e87e9b6425529926406745b721
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>

Add initial CPU support for Cortex-Deimos ...

Change-Id: I2c4b06423fcd96af9351b88a5e2818059f981f1b
Signed-off-by: Joel Hutton <Joel.Hutton@Arm.com>
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>

Set FVP DYN_DISABLE_AUTH authentication default to 0 ...

Set the ability to dynamically disable Trusted Boot Board
authentication to be off by default

Change-Id: Ibd2aa179179f7d9b0e7731c6e450f200a8c67529
Signed-off-by: Daniel Boulby <daniel.boulby@arm.com>

Merge pull request #1441 from robertovargas-arm/mem_protect_board ...

Move mem-protect definitions to board specific files

Arm platforms: Remove common RAS configuration source ...

The file arm_ras.c intended to provide common platform-specific RAS
configuration for Arm platforms. Because this file has symbol
definitions, it's proving difficult to provide a common definition.

This patch therefore renames and makes the file specific to FVP. Other
platforms shall provide their own configuration in similar fashion.

Change-Id: I766fd238946e3e49cdb659680e1b45f41b237901
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>

Move mem-protect definitions to board specific files ...

Having these definitions in board_arm_def.h forces to
all the arm platforms to use the same definition for
PLAT_ARM_MEM_PROT_ADDR.

This macro also enables the mem-protect mechanism,
which means that all the arm platform has enabled
mem-protect and they cannot get rid of it.

Change-Id: Id29d2c51cbe6edc15f010a9f5a20c42266c48a08
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

Set DYNAMIC_WORKAROUND_CVE_2018_3639=1 on FVP by default ...

The upcoming patch that adds dynamic mitigation for Cortex-A76
requires that DYNAMIC_WORKAROUND_CVE_2018_3639=1.  On FVP, we pull in
all the CPU files into the build which means there will be a build
failure if DYNAMIC_WORKAROUND_CVE_2018_3639=0.

Change-Id: I2e781cbeafbf5d16eaabf76a1677e0c9f81269d2
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>