Merge "fix(allwinner): enable dtb modifications for CPU idle states to the rich OS" into integration

fix(allwinner): enable dtb modifications for CPU idle states to the rich OS

Commit e2b18771fc2a0528dda18dbdaac08dd8530df25a ("feat(allwinner):
provide CPU idle states to the rich OS") added function

fix(allwinner): enable dtb modifications for CPU idle states to the rich OS

Commit e2b18771fc2a0528dda18dbdaac08dd8530df25a ("feat(allwinner):
provide CPU idle states to the rich OS") added functionality to amend
dtb, when SCPI as the PSCI backend is available. But this
functionality is disabled by default even for platforms, that support
it, like A64. As a result rich OS don't get information about
available CPU idle states.

Due to size constraints of A64 platform DEBUG=1 can be built with
dtb amend functionality only with LTO enabled. So ENABLE_LTO is
enabled by default for this platform.

```
aarch64-linux-gnu-ld.bfd: address 0x500dd of build/sun50i_a64/debug/bl31/bl31.elf section `.data' is not within region `RAM'
aarch64-linux-gnu-ld.bfd: BL31 image has exceeded its limit.
aarch64-linux-gnu-ld.bfd: region `RAM' overflowed by 224 bytes
```

To build with ENABLE_LTO=0 and DEBUG=1 it's required SUNXI_AMEND_DTB=0
to explicitly disable dtb amend functionality.

sun50i_r329 SUNXI_AMEND_DTB=1 DEBUG=1 build fails with 'region `RAM'
overflowed by 120 bytes'. To avoid unnecessary RAM consumption on
other resource-constraints platforms (like sun50i_r329)
SUNXI_AMEND_DTB is enabled only on sun50i_a64. Otherwise
On other platforms sunxi_idle_states are empty.

Signed-off-by: Andrey Skvortsov <andrej.skvortzov@gmail.com>
Change-Id: I81fcf31b5bd2bd02a9f3361a6a519632f087445d

show more ...

Merge changes from topic "allwinner_h616" into integration

* changes:
allwinner: H616: Add reserved-memory node to DT
allwinner: Add Allwinner H616 SoC support
allwinner: Add H616 SoC ID
all

Merge changes from topic "allwinner_h616" into integration

* changes:
allwinner: H616: Add reserved-memory node to DT
allwinner: Add Allwinner H616 SoC support
allwinner: Add H616 SoC ID
allwinner: Express memmap more dynamically
allwinner: Move sunxi_cpu_power_off_self() into platforms
allwinner: Move SEPARATE_NOBITS_REGION to platforms
doc: allwinner: Reorder sections, document memory mapping

show more ...

allwinner: Move SEPARATE_NOBITS_REGION to platforms

For the existing SoCs we support, we use SEPARATE_NOBITS_REGION, to move
some parts of the data into separate memory regions (to save on the SRAM

allwinner: Move SEPARATE_NOBITS_REGION to platforms

For the existing SoCs we support, we use SEPARATE_NOBITS_REGION, to move
some parts of the data into separate memory regions (to save on the SRAM
A2 we are loaded into).
For the upcoming H616 platform this is of no concern (we run in DRAM),
so make this flag a platform choice instead.

Change-Id: Ic01d49578c6274660f8f112bd23680d3eca3be7a
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

show more ...

Merge "allwinner: A64: Limit FDT checks to reduce code size" into integration

allwinner: A64: Limit FDT checks to reduce code size

The upcoming refactoring to support the new H616 SoCs will push the A64
build over the edge, by using more than the 48KB of SRAM available.

To r

allwinner: A64: Limit FDT checks to reduce code size

The upcoming refactoring to support the new H616 SoCs will push the A64
build over the edge, by using more than the 48KB of SRAM available.

To reduce the code size, set some libfdt options that aim to reduce
sanity checks (for saving code space):
- ASSUME_LATEST: only allow v17 DTBs (as created by dtc)
- ASSUME_NO_ROLLBACK: don't prepare for failed DT additions
- ASSUME_LIBFDT_ORDER: assume sane ordering, as done by dtc

Change-Id: I12c93ec09e7587c5ae71e54947f817c32ce5fd6d
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

show more ...

Merge changes from topic "allwinner_pmic" into integration

* changes:
allwinner: h6: power: Switch to using the AXP driver
drivers: allwinner: axp: Add AXP805 support

Merge changes from topic "allwinner_pmic" into integration

* changes:
allwinner: Convert AXP803 regulator setup code into a driver
allwinner: a64: power: Use fdt_for_each_subnode
allwinner: a6

Merge changes from topic "allwinner_pmic" into integration

* changes:
allwinner: Convert AXP803 regulator setup code into a driver
allwinner: a64: power: Use fdt_for_each_subnode
allwinner: a64: power: Remove obsolete register check
allwinner: a64: power: Remove duplicate DT check
allwinner: Build PMIC bus drivers only in BL31
allwinner: a64: power: Make sunxi_turn_off_soc static
allwinner: Merge duplicate code in sunxi_power_down
allwinner: Clean up PMIC-related error handling
allwinner: Synchronize PMIC enumerations
allwinner: Enable clock before resetting I2C/RSB

show more ...

allwinner: h6: power: Switch to using the AXP driver

Chip ID checking and poweroff work just like they did before.
Regulators are now enabled just like on A64/H5.

This changes the signatures of the

allwinner: h6: power: Switch to using the AXP driver

Chip ID checking and poweroff work just like they did before.
Regulators are now enabled just like on A64/H5.

This changes the signatures of the low-level register read/write
functions to match the interface expected by the common driver.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Change-Id: I14d63d171a094fa1375904928270fa3e21761646

show more ...

allwinner: Convert AXP803 regulator setup code into a driver

Previously, the A64/H5 and H6 platforms' PMIC setup code was entirely
independent. However, some H6 boards also need early regulator setu

allwinner: Convert AXP803 regulator setup code into a driver

Previously, the A64/H5 and H6 platforms' PMIC setup code was entirely
independent. However, some H6 boards also need early regulator setup.

Most of the register interface and all of the device tree traversal code
can be reused between the AXP803 and AXP805. The main difference is the
hardware bus interface, so that part is left to the platforms. The
remainder is moved into a driver.

I factored out the bits that were obviously specific to the AXP803;
additional changes for compatibility with other PMICs can be made as
needed.

The only functional change is that rsb_init() now checks the PMIC's chip
ID register against the expected value. This was already being done in
the H6 version of the code.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Change-Id: Icdcf9edd6565f78cccc503922405129ac27e08a2

show more ...

allwinner: Build PMIC bus drivers only in BL31

These are used by the PMIC setup code, which runs during BL31
initialization, and the PSCI shutdown code, also a part of BL31.
They can't be needed bef

allwinner: Build PMIC bus drivers only in BL31

These are used by the PMIC setup code, which runs during BL31
initialization, and the PSCI shutdown code, also a part of BL31.
They can't be needed before BL31, or it wouldn't be possible to boot.
Allwinner platforms don't generally build anything but BL31 anyway, but
this change improves clarity and consistency with allwinner-common.mk.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Change-Id: I24f1d9ca8b4256e44badf5218d04d8690082babf

show more ...

Merge pull request #1646 from Andre-ARM/allwinner/pmic-v2

Allwinner/pmic v2

allwinner: A64: Add AXP803 PMIC support to power off the board

Boards with the Allwinner A64 SoC are mostly paired with an AXP803 PMIC,
which allows to programmatically power down the board.

Use th

allwinner: A64: Add AXP803 PMIC support to power off the board

Boards with the Allwinner A64 SoC are mostly paired with an AXP803 PMIC,
which allows to programmatically power down the board.

Use the newly introduced RSB driver to detect and program the PMIC on
boot, then later to turn off the main voltage rails when receiving a
PSCI SYSTEM_POWER_OFF command.

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

show more ...

allwinner: Unify platform.mk files

For the two different platforms we support in the Allwinner port we
mostly rely on header files covering the differences. This leads to the
platform.mk files in th

allwinner: Unify platform.mk files

For the two different platforms we support in the Allwinner port we
mostly rely on header files covering the differences. This leads to the
platform.mk files in the respective directories to be almost identical.

To avoid further divergence and make sure that one platform doesn't
break accidentally, let's create a shared allwinner-common.mk file and
include that from the platform directory.

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

show more ...

Merge pull request #1587 from antonio-nino-diaz-arm/an/deprecated

Remove deprecated interfaces for all platforms

allwinner: Remove references to removed build flags

Change-Id: I206478597dd9855d3fe1577e7e2c0fe6d2af1cc5
Tested-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Antonio Nino Diaz <antonio.

allwinner: Remove references to removed build flags

Change-Id: I206478597dd9855d3fe1577e7e2c0fe6d2af1cc5
Tested-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

show more ...

Merge pull request #1534 from Icenowy/sun50i_h6_pmic

Add support for Allwinner H6 + X-Powers AXP805 PMIC combination

allwinner: call PMIC setup code

As the ATF may need to do some power initialization on Allwinner
platform with AXP PMICs, call the PMIC setup code in BL31.

Stub of PMIC setup code is added, to prev

allwinner: call PMIC setup code

As the ATF may need to do some power initialization on Allwinner
platform with AXP PMICs, call the PMIC setup code in BL31.

Stub of PMIC setup code is added, to prevent undefined reference.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>

show more ...

Merge pull request #1400 from Andre-ARM/allwinner/v1

Allwinner platform support

allwinner: Add security setup

Some peripherals are TrustZone aware, so they need to be configured to
be accessible from non-secure world, as we don't need any of them being
exclusive to the secure w

allwinner: Add security setup

Some peripherals are TrustZone aware, so they need to be configured to
be accessible from non-secure world, as we don't need any of them being
exclusive to the secure world.
This affects some clocks, DMA channels and the Secure Peripheral
Controller (SPC). The latter controls access to most devices, but is not
active unless booting with the secure boot fuse burnt.

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

show more ...

allwinner: Add functions to control CPU power/reset

sun50i_cpu_on will be used by the PSCI implementation to initialize
secondary cores for SMP. Unfortunately, sun50i_cpu_off is not usable by
PSCI d

allwinner: Add functions to control CPU power/reset

sun50i_cpu_on will be used by the PSCI implementation to initialize
secondary cores for SMP. Unfortunately, sun50i_cpu_off is not usable by
PSCI directly, because it is not possible for a CPU to use this function
to power itself down. Power cannot be shut off until the outputs are
clamped, and MMIO does not work once the outputs are clamped.

But at least CPU0 can shutdown the other cores early in the BL31 boot
process and before shutting down the system.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

show more ...

allwinner: Add Allwinner A64 support

The Allwinner A64 SoC is quite popular on single board computers.
It comes with four Cortex-A53 cores in a singe cluster and the usual
peripherals for set-top bo

allwinner: Add Allwinner A64 support

The Allwinner A64 SoC is quite popular on single board computers.
It comes with four Cortex-A53 cores in a singe cluster and the usual
peripherals for set-top box/tablet SoC.

The ATF platform target is called "sun50i_a64".

[Andre: adapted to amended directory layout, removed unneeded definitions ]

Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

show more ...