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On ZynqMP the FSBL will configure the system counter. Hence, remove the
initialization of the system counter with hardcoded values from the ATF
and use the setup provided by the bootloader.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>

The silicon ID does not change at runtime. Skip the IO access if the
ID has been read before.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>

rk3399: fixes and updates for s2r

Alphabetical reordering for build options and make files

RK3399 M0 build system improvements

When build variables are assigned or processed en masse, they'd appear
neater in alphabetical order.

Static initializations are moved to a separate file,
make_helpers/defaults.mk, which in itself is sorted alphabetically.

No functional changes.

Change-Id: I966010042b33de6b67592fb9ffcef8fc44d7d128
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>

At present, build options in the user guide aren't listed in any
specific order. Ordering them alphabetically is a standard practice, and
is also easier on the reader.

Contents unchanged.

Change-Id: Ibc36f3a2a576edb86c1a402430d2ef5adcb2f144
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>

We have do something for clocks gate.

Fox example as the below:
susped:
clk_gate_con_save();
clk_gate_con_disable();

resume:
clk_gate_con_restore();
--

SO, add the plls_suspend_prepare() and plls_resume_finish() are not
necessary to S2R, that will save S2R time if remove them.

BRANCH=none
BUG=chrome-os-partner:58870,chrome-os-partner:55934
TEST=build kevin, two dogfooders with suspend_stress_test
passing 3000 cycles and still going on.

Change-Id: Icfbabc0b3ea8d2b5108d4f3de99a803b6d459669
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

The CA53 and CM0 WDT clock gating in rk3399 SGRF, and ATF is in charge of
it because the kernel can't touch SGRF.

Basically the WDT didn't stop at suspend time, it just switched from the
24M to the 32k clock. That meant that the WDT would fire if you slept for
long enough. In other word, the watchdog timer over count will increase to
750 (24*1000/32) times.
The RK3399 HW watchdog interval is 21 seconds. When machine enters the
suspend, the watchdog will reset the system after 35.7 (750/21) hours.

BUG=chrome-os-partner:59257
TEST=daisydog checked and set value, powerd_dbus_suspend to verify.

Change-Id: I88bb2a05b7d67d5ffd292f9d05d033ae9a6a3593
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

This patch adds dependency rule generation and inclusion to the M0
Makefile, so that M0 objects will get correctly remade with an
incremental build if a header file they included changed.

Change-Id: I2067bd9fd4d9dad3e77a09cbf09c7b4db3c1eda5
Signed-off-by: Julius Werner <jwerner@chromium.org>

The dependencies in the M0 Makefile are not correctly laid out, which
may lead to errors with make -j if the binary target gets evaluated
before the target that creates the directory. In addition, the M0
Makefile just calls mkdir without using the platform-independent macros
from the main ARM TF build system. This patch fixes those issues,
removes some unused (and broken) M0 build targets and merges the two M0
output directories into one (since there's no real point splitting it up
and it creates more hassle).

Change-Id: Ia5002479cf9c57fea7aefa8ca88e373df3a51f61
Signed-off-by: Julius Werner <jwerner@chromium.org>

Porting guide: Improve bl1_plat_mem_check() doc

BL31 runtime instrumentation fixes and documentation update

This patch fixes the type of the return value of bl1_plat_mem_check()
in the porting guide. It also specifies the expected return value.

Change-Id: I7c437342b8bfb1e621d74b2edf0aaf97b913216a
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>

Without an explicit cache flush, the next timestamp captured might have
a bogus value.

This can happen if the following operations happen in order,
on a CPU that's being powered down.

1) ENTER PSCI timestamp is captured with caches enabled.

2) The next timestamp (ENTER_HW_LOW_PWR) is captured with caches
   disabled.

3) On a system that uses a write-back cache configuration, the
   cache line that holds the PMF timestamps is evicted.

After step 1), the ENTER_PSCI timestamp is cached and not in main memory.
After step 2), the ENTER_HW_LOW_PWR timestamp is stored in main memory.
Before the CPU power down happens, the hardware evicts the cache line that
contains the PMF timestamps for this service.  As a result, the timestamp
captured in step 2) is overwritten with a bogus value.

Change-Id: Ic1bd816498d1a6d4dc16540208ed3a5efe43f529
Signed-off-by: dp-arm <dimitris.papastamos@arm.com>

Change-Id: I8e50df67e860b9589834445761a7b9927690fdce
Signed-off-by: dp-arm <dimitris.papastamos@arm.com>

Support rk3399 dram

Fix format of patches passed to checkpatch

Comment fixes and .gitignore update

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

Checkpatch is a script developed to verify the style of Linux kernel
patches. As Kernel developers use emails to send patches for review,
checkpatch is prepared for that specific format. This change adapts
the Makefile to use said format.

As a result, indentation in the commit message has been removed, thus
fixing the warnings about Signed-off-by lines being preceded by
whitespace.

Fixes ARM-software/tf-issues#432

Change-Id: I00cb86365fe15f7e2c3a99a306c8eb51cf02fe86
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

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

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

The RK3399 supports close the center logic enter power mode,
so we can close PD_CENTER to save more power during suspend.
Therefore, we need to support save/restore the DDR PHY and
controller registers during suspend/resume.

Also, need CL (http://crosreview.com/397399

) to check disabling
center logic.

Change-Id: I288defd8e9caa3846d9fa663a33e4d51df1aaa5d
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Derek Basehore <dbasehore@chromium.org>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

This patch intend to support save the registers of the DDR controller
and PHY before suspend, and restore them after resume.

Change-Id: Ia10b476c0b837628ac0f365416a7118292753e96
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Derek Basehore <dbasehore@chromium.org>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

This changes the style of dmc register accesses to be a read/write on
a base address plus a register offset instead of reinterpretting a
base address as a struct and accessing members within that struct.

Change-Id: Iead097cd6afdb830d8bc193608cd39d01ce5a6bc
Signed-off-by: Derek Basehore <dbasehore@chromium.org>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

This renames dram.c and dram.h to dfs.c and dfs.h respectively. This
is to make room for common functionality between frequency scaling and
suspend code for the DRAM in a pair of common files named dram.c and
dram.h. It also removes a duplicate enum definition from
dram_spec_timing.h

Change-Id: Ibfa1041f8781401f9d27901fe8c61862bcb05562
Signed-off-by: Derek Basehore <dbasehore@chromium.org>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

This moves the PMU register definitions into another file for use in
later patches.

Change-Id: I8b5f1e7938b63ada6a743cf9661c3e474e96e4e4
Signed-off-by: Derek Basehore <dbasehore@chromium.org>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

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