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Comment fixes and .gitignore update

fiptool: fix Segmentation fault when only --verbose option is given

Mandate 'Signed-off-by' line in commit messages

fiptool: Link `toc_entry` and `image` structures via UUID

Fix the following bug:

  $ tools/fiptool/fiptool -v
  Segmentation fault (core dumped)
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

rockchip: optimize the link mechanism for SRAM code

rockchip: fix A72 L2CTLR_DATA_RAM_LATENCY to 5

The default value of L2CTLR_DATA_RAM_LATENCY is 2, depends to
the test result on rk3399, the A72 will need lower voltage for
high frequency if it's set to be 5, and almost no effect on performance.

Change-Id: I99a6a43edcc0c58f7775c10f4b85669dc3eff66d
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

Due to the PMU design, the PMU may not clear the WAKEUP bit after
wakeup, therefore, the state machine at the power mode may enter
the infinite loop during WFI.

There is a solution that we can use the M0 to monitor the WAKEUP
bit and clear it during power mode, then the state machine will be
recovered immediately. Then, the DUT can exit the WFI normally.

Change-Id: I303628553b728c214bf2d436bd3122032b5e669c
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

This CL supports add M0 source code to built into the bl31.bin, the
goal is that we can load the M0 code binary into SRAM and execute it.

We need the M0 help us to clean the power_mode_en bit during the AP
PMU enter the state machine with interrupt, and avoid to the AP can
not exit the loop forever.

Change-Id: I844582c54a1f0d44ca41290d44618df58679f341
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

Add the common extra.ld.S and customized rk3399.ld.S to extend
to more features for different platforms.
For example, we can add SRAM section and specific address to
load there if we need it, and the common bl31.ld.S not need to
be modified.

Therefore, we can remove the unused codes which copying explicitly
from the function pmusram_prepare(). It looks like more clear.

Change-Id: Ibffa2da5e8e3d1d2fca80085ebb296ceb967fce8
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

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

As described in the Porting Guide, plat_reset_handler should
preserve x19 to x29.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

Do not double the phrase "called with the".
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

This patch updates the configuration file for the checkpatch.pl
script to check for the presence of a 'Signed-off-by' line in the
commit message. This is now required by TF contribution process.

Change-Id: I8bcd6d39a5dcd85547244d60c10a7cd2148c404f
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>

rockchip: fixes the wrong CLKSEL_CON count for CRU

The CRU_CLKSEL_COUNT value is 108, not 0x108.
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Change-Id: Ib9db066b8b3ecafcee7f645dd5633b55a808e3d7

partition: check GPT partition table

The `toc_entry` and `image` data structures had a cyclic
relationship.  This patch removes the explicit dependencies and introduces
functions to link them via the UUID.

This change highlights the intent of the code better and makes it more
flexible for future enhancements.

Change-Id: I0c3dd7bfda2a631a3827c8ba4831849c500affe9
Signed-off-by: dp-arm <dimitris.papastamos@arm.com>

Unify SCTLR initialization for AArch32 normal world

Makefile: Add missing space in help output

Remove non-standard <sys/cdefs.h> include from uuid.h

Add instrumentation support for PSCI

rockchip: fixes the clock select and divide register for rk3399

The values of CP15BEN, nTWI & nTWE bits in SCTLR_EL1 are architecturally
unknown if EL3 is AARCH64 whereas they reset to 1 if EL3 is AArch32. This
might be a compatibility break for legacy AArch32 normal world software if
these bits are not set to 1 when EL3 is AArch64. This patch enables the
CP15BEN, nTWI and nTWE bits in the SCTLR_EL1 if the lower non-secure EL is
AArch32. This unifies the SCTLR settings for lower non-secure EL in AArch32
mode for both AArch64 and AArch32 builds of Trusted Firmware.

Fixes ARM-software/tf-issues#428

Change-Id: I3152d1580e4869c0ea745c5bd9da765f9c254947
Signed-off-by: Soby Mathew <soby.mathew@arm.com>

Final updates for v1.3 release

Release v1.3: Minor updates to user guide

Updated the user guide to clarify building FIP for AArch32.
The instructions were previously specific to building a FIP for AArch64.

Change-Id: I7bd1a6b8e810cfda411f707e04f479006817858e
Signed-off-by: David Cunado <david.cunado@arm.com>

Update the release notes (readme.md) for the ARM Trusted Firmware
v1.3 release.

Change-Id: Ia1f4eb1897e63eeab7d69a593ba0ad91d50043f5
Signed-off-by: Dan Handley <dan.handley@arm.com>

Change-Id: I05991543d28e70b67be600b714990af6a8d7ba29

Updated change-log.md with summary of changes since release v1.2.

Change-Id: Ia1e18ff4b0da567cf12dfcb53e6317e995100bdf

PMF: Add documentation

Add a Performance Measurement Framework (PMF) section
to the firmware design document.

Change-Id: I5953bd3b1067501f190164c8827d2b0d8022fc0b
Signed-off-by: dp-arm <dimitris.papastamos@arm.com>

This include provides nothing useful for TF and prevents building
the fiptool using musl libc[0].

[0] https://www.musl-libc.org/



Change-Id: Ied35e16b9ea2b40213433f2a8185dddc59077884
Signed-off-by: dp-arm <dimitris.papastamos@arm.com>

In order to quantify the overall time spent in the PSCI software
implementation, an initial collection of PMF instrumentation points
has been added.

Instrumentation has been added to the following code paths:

- Entry to PSCI SMC handler.  The timestamp is captured as early
  as possible during the runtime exception and stored in memory
  before entering the PSCI SMC handler.

- Exit from PSCI SMC handler.  The timestamp is captured after
  normal return from the PSCI SMC handler or if a low power state
  was requested it is captured in the bl31 warm boot path before
  return to normal world.

- Entry to low power state.  The timestamp is captured before entry
  to a low power state which implies either standby or power down.
  As these power states are mutually exclusive, only one timestamp
  is defined to describe both.  It is possible to differentiate between
  the two power states using the PSCI STAT interface.

- Exit from low power state.  The timestamp is captured after a standby
  or power up operation has completed.

To calculate the number of cycles spent running code in Trusted Firmware
one can perform the following calculation:

(exit_psci - enter_psci) - (exit_low_pwr - enter_low_pwr).

The resulting number of cycles can be converted to time given the
frequency of the counter.

Change-Id: Ie3b8f3d16409b6703747093b3a2d5c7429ad0166
Signed-off-by: dp-arm <dimitris.papastamos@arm.com>

This patch adds ARM SiP service for use by ARM standard platforms.
This service is added to support the SMC interface for the Performance
measurement framework(PMF).

Change-Id: I26f5712f9ab54f5f721dd4781e35a16f40aacc44
Signed-off-by: dp-arm <dimitris.papastamos@arm.com>

Fix documentation of bootwrapper boot on juno

The user guide incorrectly claimed that it is possible to load a
bootwrapped kernel over JTAG on Juno in the same manner as an EL3
payload. In the EL3 payload boot flow, some of the platform
initialisations in BL2 are modified. In particular, the TZC settings
are modified to allow unrestricted access to DRAM. This in turn allows
the debugger to access the DRAM and therefore to load the image there.

In the BL33-preloaded boot flow though, BL2 uses the default TZC
programming, which prevent access to most of the DRAM from secure state.
When execution reaches the SPIN_ON_BL1_EXIT loop, the MMU is disabled
and thus DS-5 presumably issues secure access transactions while trying
to load the image, which fails.

One way around it is to stop execution at the end of BL2 instead. At
this point, the MMU is still enabled and the DRAM is mapped as
non-secure memory. Therefore, the debugger is allowed to access this
memory in this context and to sucessfully load the bootwrapped kernel in
DRAM. The user guide is updated to suggest this alternative method.
Co-Authored-By: Sandrine Bailleux <sandrine.bailleux@arm.com>
Signed-off-by: Dan Handley <dan.handley@arm.com>

Change-Id: I537ea1c6d2f96edc06bc3f512e770c748bcabe94

AArch32: Update firmware-design.md

AArch32: Update user-guide and add DTBs