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It uses the hardware RNG in a similar way as Juno (it gets 128 bits of
entropy and does xor on them).

It is disabled by default.

Change-Id: I8b3adb61f5a5623716e0e8b6799404c68dd94c60
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Note that this is a non-secure RNG. This is only useful for educational
purposes.

Change-Id: If359c8d0f755ef8e416986de7fbca34679a523e1
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

There is no way to boot BL31 at the addresses specified in the platform
memory map unless an extra loader is used at address 0x00000000. It is
better to remove it to prevent confusion. Having it enabled was a bug.

Change-Id: I3229fbc080f5996cff47efce8e799bae94e0d5cb
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

rpi3: A few improvements

Implement VideoCore mailbox interface driver and use it to get the board
revision identifier.

For now it is only used to print the model for debug purposes.

This wiki contains the documentation of the mailbox interface:

https://github.com/raspberrypi/firmware/wiki



Change-Id: I11943b99b52cc1409f4a195ebe58eb44ae5b1d6c
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

This implementation doesn't actually turn the system off, it simply
reboots it and prevents it from booting while keeping it in a low power
mode.

Change-Id: I7f72c9f43f25ba0341db052bc2be4774c88a7ea3
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Add a new default makefile target to concatenate BL1 and the FIP and
generate armstub8.bin. This way it isn't needed to do it manually.

Documentation updated to reflect the changes.

Change-Id: Id5b5b1b7b9f87767db63fd01180ddfea855a7207
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

CSS: Add support for SCMI AP core config protocol

[RFC] Add MMC framework

rpi3: enlarge SEC_DRAM0_SIZE for optee_test to pass

rpi3: Implement simple interrupt routing

Fix some violations to MISRA rules 8.3, 8.4, 8.5, 8.8

Change-Id: Iaebbeac1a1d6fbd531e5694b95ed068b7a193e62
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>

Change-Id: If07000b6b19011e960336a305a784dd643301b97
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>

Running optee_test failed because SEC_DRAM0_SIZE is too small. Previous
is 2 MB. We enlarge it to 11 MB for passing the test. Also we reduce
the NS_DRAM0_SIZE from 13MB to 4MB so that the whole section is still
fit in 16MB.

This commit also modified the document to reflect the changes we've
made in code.
Tested-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Signed-off-by: Ying-Chun Liu (PaulLiu) <paulliu@debian.org>

Implement minimal interrupt routing functions. All interrupts are
treated as non-secure interrupts to be handled by the non-secure world.

Add note to the documentation about disabling FIQs qhen using OP-TEE
with Linux.

Change-Id: I937096542d973925e43ae946c5d0b306d0d95a94
Tested-by: Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

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>