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The ARM_INSTANTIATE_LOCK macro defines a lock meant to be further
manipulated using the arm_lock_init/get/release() macros. It has 2
variants, depending on the BL image it is compiled for. One version
defines the lock variable with internal linkage whereas the other one,
with external linkage.

Code that uses these macros is not compliant with MISRA rule 8.4 because
when using the external linkage version, there is no visible declaration
for the lock variable.

This patch defines the arm_lock variable with internal linkage in both
cases. This fits well the way these macros are used in the code today,
where the lock is not used outside of the translation unit it is
defined in.

Change-Id: I213a74a2a6088a4f1e9a61a319ca7579c2001320
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>

The plat_arm_mmap variable is already declared in plat_arm.h, which is
included from plat/arm/common/arm_common.c.

Similarly, plat_arm.h declares the 'plat_arm_psci_pm_ops' variable, which
does not need to be declared again in plat/arm/common/arm_pm.c.

The duplication was not compliant with MISRA rule 8.5.

Change-Id: Icc42547cc025023226b1078a7ec4f06d093364b7
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>

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 and Cortex-Helios

Change-Id: Ic0486131c493632eadf329f80b0b5904aed5e4ef
Signed-off-by: Joel Hutton <joel.hutton@arm.com>
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>

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

Misra

Make TF compatible with Clang assembler and linker

Change-Id: Ie65eb779b048940cf32ed5744ff40610b3c5499d
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

Change-Id: I562c5de91e12fe384245df41225dfb9122a13a85
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

Change-Id: Ib90b767e46360ef07c1f22526e3f3eb5fe366d5d
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

This check was added to ensure the correct behaviour of fill_constants
macro. This macro has been verified and it is known his correct
behaviour. The check generates an error when the clang assembler is
used, so it is better to remove the check.

Change-Id: I3447ff9e9e5ee5cf0502f65e53c3d105d9396b8b
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

This directive is not implemented by clang assembler. The traditional
way to implement structs in assembly is using two macros for every field,
one for the offset, and another one for the size. For every field, the
offset can be calculated using the size and offset of the previous field.

Change-Id: Iacc6781e8f302fb925898737b8e85ab4e88a51cc
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

Clang assembler doesn't support concatenation of adjacent strings.

Change-Id: I092a1e30c137d431c6adcc13519fc2d595f92f14
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

Check_vector_size checks if the size of the vector fits
in the size reserved for it. This check creates problems in
the Clang assembler. A new macro, end_vector_entry, is added
and check_vector_size is deprecated.

This new macro fills the current exception vector until the next
exception vector. If the size of the current vector is bigger
than 32 instructions then it gives an error.

Change-Id: Ie8545cf1003a1e31656a1018dd6b4c28a4eaf671
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

These directives are only used when stabs debugging information
is used, but we use ELF which uses DWARF debugging information.
Clang assembler doesn't support these directives, and removing
them makes the code more compatible with clang.

Change-Id: I2803f22ebd24c0fe248e04ef1b17de9cec5f89c4
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

This patch allows the user to override the value of the LD Makefile
variable. This feature can be used to force the use of the new Clang
linker.

Change-Id: I97ffeb18e48fa75346702a479d7dc1e8abcb3621
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

These sections are required by clang when the code is compiled for
aarch32. These sections are related to the unwind of the stack in
exceptions, but in the way that clang defines and uses them, the
garbage collector cannot get rid of them.

Change-Id: I085efc0cf77eae961d522472f72c4b5bad2237ab
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

Clang linker doesn't support NEXT. As we are not using the MEMORY command
to define discontinuous memory for the output file in any of the linker
scripts, ALIGN and NEXT are equivalent.

Change-Id: I867ffb9c9a76d4e81c9ca7998280b2edf10efea0
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

The user guide didn't contain any information about the
requirements of the clang version needed by TF, which is
at least 4.0.

Change-Id: I1ea120aca0fb2c0950fbeaf6978c654ec277afde
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

Add device-tree-compiler to the list of packages

Change-Id: Ia7800dae52f152b2c3a3b41f1078ab7499d2f4b6
Signed-off-by: Sathees Balya <sathees.balya@arm.com>

Rule 8.4: A compatible declaration shall be visible when
an object or function with external linkage is defined

Fixed for:
	make DEBUG=1 PLAT=juno SPD=tspd CSS_USE_SCMI_SDS_DRIVER=1 all

Change-Id: Id732c8df12ef3e20903c41b7ab9a9b55341d68ac
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

Rule 8.3: All declarations of an object or function shall
              use the same names and type qualifiers.

Fixed for:
make DEBUG=1 PLAT=juno SPD=tspd CSS_USE_SCMI_SDS_DRIVER=1 all

Change-Id: Id9dcc6238b39fac6046abc28141e3ef5e7aa998d
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

Rule 8.4: A compatible declaration shall be visible when
an object or function with external linkage is defined

Fixed for:
	make DEBUG=1 PLAT=juno ARCH=aarch32 AARCH32_SP=sp_min RESET_TO_SP_MIN=1 JUNO_AARCH32_EL3_RUNTIME=1 bl32

Change-Id: I3ac25096b55774689112ae37bdf1222f9a9ecffb
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

Rule 8.3: All declarations of an object or function shall
              use the same names and type qualifiers.

Fixed for:
	make DEBUG=1 PLAT=juno ARCH=aarch32 AARCH32_SP=sp_min RESET_TO_SP_MIN=1 JUNO_AARCH32_EL3_RUNTIME=1 bl32

Change-Id: Ia34f5155e1cdb67161191f69e8d1248cbaa39e1a
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

tools/cert_create: fix makefile to build build_msg.o by HOSTCC

Previously build_msg.o is built by CC. It causes FTBFS when CC
is not equal to HOSTCC.
Signed-off-by: Ying-Chun Liu (PaulLiu) <paulliu@debian.org>

rpi3: Add support for Trusted Board Boot

allwinner: Add H6 SoC support

Add paragraph for how to enable Trusted Board Boot for rpi3
Tested-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Signed-off-by: Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>

For Trusted Board Boot we enlarge the BL1 size from 64k to 128k.
Tested-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Signed-off-by: Ying-Chun Liu (PaulLiu) <paulliu@debian.org>

This patch adds support for TBB to rpi3. The ROTPK is generated at build
time and is included into BL1/BL2. The key and content certificates are
read over semihosting.
Tested-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Signed-off-by: Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>

xlat v2: Update documentation

Extend FIP io driver to support multiple FIP devices

A proper link to Samuel's github page was missing. Add this to make
the link actually work.

Change-Id: I68b116935bf045df60b2e9309b5fd58a1c694d47
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

Fixes related to unaligned accesses

The H6 is Allwinner's most recent SoC. It shares most peripherals with the
other ARMv8 Allwinner SoCs (A64/H5), but has a completely different memory
map.

Introduce a separate platform target, which includes a different header
file to cater for the address differences. Also add the new build target
to the documentation.

The new ATF platform name is "sun50i_h6".
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

Casting a pointer to a struct uuid into a pointer to uint32_t may
result in a pointer that is not correctly aligned, which constitutes
an undefined behaviour. In the case of TF, this also generates a data
abort because alignment fault checking is enabled (through the SCTLR.A
bit).

This patch modifies the SMC_UUID_RET() macro to read the uuid
structure without any pointer aliasing. A helper function then
combines every set of 4 bytes into a 32-bit value suitable to be
returned through the x0-x3 registers.

This fixes a violation of MISRA rule 11.3.

Change-Id: I53ee73bb4cb332f4d8286055ceceb6f347caa080
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>

Alignment fault checking is always enabled in TF (by setting the
SCTLR.A bit). Thus, all instructions that load or store one or more
registers have an alignment check that the address being accessed is
aligned to the size of the data element(s) being accessed. If this
check fails it causes an Alignment fault, which is taken as a Data
Abort exception.

The compiler needs to be aware that it must not emit load and store
instructions resulting in unaligned accesses. It already is for
AArch64 builds (see commit fa1d3712

 "Add -mstrict-align to the gcc
options"), this patch does the same for AArch32 builds.

Change-Id: Ic885796bc6ed0ff392aae2d49f3a13f517e0169f
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>