build: always use the C compiler to preprocess

We're a bit inconsistent about which tool we use to preprocess source
files; in some places we use `$(CC) -E` whilst in others we use `cpp`.

This chan

build: always use the C compiler to preprocess

We're a bit inconsistent about which tool we use to preprocess source
files; in some places we use `$(CC) -E` whilst in others we use `cpp`.

This change forces all invocations of the C preprocessor to use the
first scheme, which ensures that the preprocessor behaves the same way
as the C compiler used when compiling C source files.

Change-Id: Iede2f25ff86ea8b43d7a523e32648058d5023832
Signed-off-by: Chris Kay <chris.kay@arm.com>

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Merge pull request #1384 from rockchip-linux/for_m0_patch

for rk3399 suspend/resume

rockchip/rk3399: Split M0 binary into two

All the m0 code run in SRAM before, but we need to watch PMU_POWER_ST
when SOC enter into FSM, and SRAM will shutdown during this time, so
this code need ru

rockchip/rk3399: Split M0 binary into two

All the m0 code run in SRAM before, but we need to watch PMU_POWER_ST
when SOC enter into FSM, and SRAM will shutdown during this time, so
this code need run in PMUSRAM. But PMUSRAM only 8K space, we can not
put all the m0 binary into PMUSRAM, Split the M0 binary into two, dram
part still run in SRAM, and suspend part run in PMUSRAM.

Change-Id: Ie08bdf3e2b8838f12b9297fe60ab0aad219684b1
Signed-off-by: Lin Huang <hl@rock-chips.com>

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Merge pull request #925 from dp-arm/dp/spdx

Use SPDX license identifiers

Use SPDX license identifiers

To make software license auditing simpler, use SPDX[0] license
identifiers instead of duplicating the license text in every file.

NOTE: Files that have been imported by

Use SPDX license identifiers

To make software license auditing simpler, use SPDX[0] license
identifiers instead of duplicating the license text in every file.

NOTE: Files that have been imported by FreeBSD have not been modified.

[0]: https://spdx.org/

Change-Id: I80a00e1f641b8cc075ca5a95b10607ed9ed8761a
Signed-off-by: dp-arm <dimitris.papastamos@arm.com>

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Merge pull request #835 from rockchip-linux/rk3399-atf-cleanup-20170210

RK3399 ARM TF clean up 20170210

rockchip: Clean up M0 Makefile, clarify float-abi

This patch shuffles the M0 Makefile flags around a bit trying to make
their purpose clearer and remove duplication. Since all three build
steps (com

rockchip: Clean up M0 Makefile, clarify float-abi

This patch shuffles the M0 Makefile flags around a bit trying to make
their purpose clearer and remove duplication. Since all three build
steps (compiling, assembling, linking) actually call GCC, remove the
misleading aliases $(AS) and $(LD) to avoid confusion that those tools
might be called directly. Split flags into a common group that has
meaning for all three steps and separate variables specific to each
step. Remove -nostartfiles which is a strict subset of -nostdlib.

Also add explicit parameters for -mfloat-abi=soft, -fomit-frame-pointer
and -fno-common. If omitted these settings depend on the toolchain's
built-in default and cause various problems if they resolve to
unexpected values.

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

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rockchip: rk3399: add stopwatch functions to m0

There is system timer in m0, we can use it to implement a set of
stopwatch functions for measuring timeouts.

Signed-off-by: Lin Huang <hl@rock-chips.

rockchip: rk3399: add stopwatch functions to m0

There is system timer in m0, we can use it to implement a set of
stopwatch functions for measuring timeouts.

Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Derek Basehore <dbasehore@chromium.org>

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rk3399: dram: use PMU M0 to do ddr frequency scaling

We used dcf do ddr frequency scaling, but we just include a dcf
binary, it hard to maintain later, we have M0 compile flow in ATF,
and M0 can als

rk3399: dram: use PMU M0 to do ddr frequency scaling

We used dcf do ddr frequency scaling, but we just include a dcf
binary, it hard to maintain later, we have M0 compile flow in ATF,
and M0 can also work for ddr frequency scaling, so let's use it.

Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>

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Merge pull request #802 from pgeorgi/rk3399m0

rockchip: Build m0 firmware without standard libraries

rockchip: Build m0 firmware without standard libraries

Depending on the compiler used, it might try to link in libc even though
it's not required. Stop it from doing that.

Signed-off-by: Patrick Ge

rockchip: Build m0 firmware without standard libraries

Depending on the compiler used, it might try to link in libc even though
it's not required. Stop it from doing that.

Signed-off-by: Patrick Georgi <pgeorgi@google.com>

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Merge pull request #750 from jwerner-chromium/m0_build

RK3399 M0 build system improvements

rockchip: Add proper dependency tracking to M0 Makefile

This patch adds dependency rule generation and inclusion to the M0
Makefile, so that M0 objects will get correctly remade with an
incremental

rockchip: Add proper dependency tracking to M0 Makefile

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>

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rockchip: Clean up parent directory creation for M0

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 t

rockchip: Clean up parent directory creation for M0

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>

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Merge pull request #724 from rockchip-linux/support-rk3399-sdram

rockchip: optimize the link mechanism for SRAM code

rockchip: add M0 source code and build system for RK3399

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

rockchip: add M0 source code and build system for RK3399

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>

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