Merge changes from topic "bk/pabandon_cleanup" into integration

* changes:
feat(cpus): add pabandon support to the Alto cpu
feat(psci): optimise clock init on a pabandon
feat(psci): check that

Merge changes from topic "bk/pabandon_cleanup" into integration

* changes:
feat(cpus): add pabandon support to the Alto cpu
feat(psci): optimise clock init on a pabandon
feat(psci): check that CPUs handled a pabandon
feat(psci): make pabandon support generic
refactor(psci): unify coherency exit between AArch64 and AArch32
refactor(psci): absorb psci_power_down_wfi() into common code
refactor(platforms): remove usage of psci_power_down_wfi
fix(cm): disable SPE/TRBE correctly

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refactor(platforms): remove usage of psci_power_down_wfi

The callers in PSCI will now call wfi() after calling the
pwr_domain_pwr_down() platform hook (previously they were mutually
exclusive). As s

refactor(platforms): remove usage of psci_power_down_wfi

The callers in PSCI will now call wfi() after calling the
pwr_domain_pwr_down() platform hook (previously they were mutually
exclusive). As such, there is no need for platforms to do this
themselves. In fact, it is strongly advisable for platforms not to do
this themselves so that the PSCI can apply any relevant errata
mitigations.

Change-Id: Ic9702edef7503996be24d984e29dfcc13bc3fcba
Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>

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Merge changes I765a7fa0,Ic33f0b6d,I8d1a88c7,I381f96be,I698fa849, ... into integration

* changes:
fix(cpus): clear CPUPWRCTLR_EL1.CORE_PWRDN_EN_BIT on reset
chore(docs): drop the "wfi" from `pwr_

Merge changes I765a7fa0,Ic33f0b6d,I8d1a88c7,I381f96be,I698fa849, ... into integration

* changes:
fix(cpus): clear CPUPWRCTLR_EL1.CORE_PWRDN_EN_BIT on reset
chore(docs): drop the "wfi" from `pwr_domain_pwr_down_wfi`
chore(psci): drop skip_wfi variable
feat(arm): convert arm platforms to expect a wakeup
fix(cpus): avoid SME related loss of context on powerdown
feat(psci): allow cores to wake up from powerdown
refactor: panic after calling psci_power_down_wfi()
refactor(cpus): undo errata mitigations
feat(cpus): add sysreg_bit_toggle

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refactor: panic after calling psci_power_down_wfi()

This function doesn't return and its callers that don't return either
rely on this. Drop the dead attribute and add a panic() after it to make
thi

refactor: panic after calling psci_power_down_wfi()

This function doesn't return and its callers that don't return either
rely on this. Drop the dead attribute and add a panic() after it to make
this expectation explicit. Calling `wfi` in the powerdown sequence is
terminal so even if the function was made to return, there would be no
functional change.

This is useful for a following patch that makes psci_power_down_wfi()
return.

Change-Id: I62ca1ee058b1eaeb046966c795081e01bf45a2eb
Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>

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Merge "feat(allwinner): use reset through scpi for warm/soft reset" into integration

feat(allwinner): use reset through scpi for warm/soft reset

On systems with SCP (running crust) scpi_system_reboot action
performs board-level (PMIC) reboot. This doesn't preserve RAM content
on A64

feat(allwinner): use reset through scpi for warm/soft reset

On systems with SCP (running crust) scpi_system_reboot action
performs board-level (PMIC) reboot. This doesn't preserve RAM content
on A64 PinePhone at least.

warm/soft system reset without RAM reset is required to get
pstore (persistent storage) in RAM working with Linux kernel. That is
very useful for oops/panic logging for post mortem analysis.

scpi_system_reset action performs reset via SoC reset (using watchdog)
and RAM content is preserved in this case. Linux kernel detects
system_reset2 support and uses it for warm reset automatically.

Change-Id: I1c21aa8f27c8e0395e2326034788693b59b80bc4
Signed-off-by: Andrey Skvortsov <andrej.skvortzov@gmail.com>

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Merge changes from topic "allwinner-idle" into integration

* changes:
feat(allwinner): provide CPU idle states to the rich OS
feat(allwinner): simplify CPU_SUSPEND power state encoding
feat(al

Merge changes from topic "allwinner-idle" into integration

* changes:
feat(allwinner): provide CPU idle states to the rich OS
feat(allwinner): simplify CPU_SUSPEND power state encoding
feat(allwinner): choose PSCI states to avoid translation
feat(fdt): add the ability to supply idle state information
fix(allwinner): improve DTB patching error handling
refactor(allwinner): patch the DTB after setting up PSCI
refactor(allwinner): move DTB change code into allwinner/common

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feat(allwinner): simplify CPU_SUSPEND power state encoding

Use the encoding recommended by the PSCI specification: four bits for
the power state at each power level.

SCPI provides no way to handsha

feat(allwinner): simplify CPU_SUSPEND power state encoding

Use the encoding recommended by the PSCI specification: four bits for
the power state at each power level.

SCPI provides no way to handshake an exit from a standby state, so the
only possible standby state is the architectural WFI state. Since WFI
can be used outside of PSCI, we do not allow passing in standby states.

Change-Id: I4b3b84e5c255ee58a25255a0cab5d7623425086e
Signed-off-by: Samuel Holland <samuel@sholland.org>

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feat(allwinner): choose PSCI states to avoid translation

Aligning the PSCI and SCPI power states avoids some code to translate
between the two. This also makes room for an intermediate power state,

feat(allwinner): choose PSCI states to avoid translation

Aligning the PSCI and SCPI power states avoids some code to translate
between the two. This also makes room for an intermediate power state,
for future firmware capability growth.

Change-Id: I26691085f277a96bd405e3305ab0fe390a92b418
Signed-off-by: Samuel Holland <samuel@sholland.org>

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Merge changes from topic "allwinner_mmap" into integration

* changes:
refactor(plat/allwinner): clean up platform definitions
refactor(plat/allwinner): do not map BL32 DRAM at EL3
refactor(pla

Merge changes from topic "allwinner_mmap" into integration

* changes:
refactor(plat/allwinner): clean up platform definitions
refactor(plat/allwinner): do not map BL32 DRAM at EL3
refactor(plat/allwinner): map SRAM as device memory by default
refactor(plat/allwinner): rename static mmap region constant
feat(bl_common): import BL_NOBITS_{BASE,END} when defined

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refactor(plat/allwinner): map SRAM as device memory by default

The SRAM on Allwinner platforms is shared between BL31 and coprocessor
firmware. Previously, SRAM was mapped as normal memory by defaul

refactor(plat/allwinner): map SRAM as device memory by default

The SRAM on Allwinner platforms is shared between BL31 and coprocessor
firmware. Previously, SRAM was mapped as normal memory by default.
This scheme requires carveouts and cache maintenance code for proper
synchronization with the coprocessor.

A better scheme is to only map pages owned by BL31 as normal memory,
and leave everything else as device memory. This removes the need for
cache maintenance, and it makes the mapping for BL31 RW data explicit
instead of magic.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Change-Id: I820ddeba2dfa2396361c2322308c0db51b55c348

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Merge changes from topic "sunxi-split-psci" into integration

* changes:
allwinner: Split native and SCPI-based PSCI implementations
allwinner: psci: Improve system shutdown/reset sequence
allw

Merge changes from topic "sunxi-split-psci" into integration

* changes:
allwinner: Split native and SCPI-based PSCI implementations
allwinner: psci: Improve system shutdown/reset sequence
allwinner: psci: Drop .pwr_domain_pwr_down_wfi callback
allwinner: Separate code to power off self and other CPUs

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allwinner: Split native and SCPI-based PSCI implementations

In order to keep SCP firmware as optional, the original, limited native
PSCI implementation was kept around as a fallback. This turned out

allwinner: Split native and SCPI-based PSCI implementations

In order to keep SCP firmware as optional, the original, limited native
PSCI implementation was kept around as a fallback. This turned out to be
a good decision, as some newer SoCs omit the ARISC, and thus cannot run
SCP firmware.

However, keeping the two implementations in one file makes things
unnecessarily messy. First, it is difficult to compile out the
SCPI-based implementation where it is not applicable. Second the check
is done in each callback, while scpi_available is only updated at boot.
This makes the individual callbacks unnecessarily complicated.

It is cleaner to provide two entirely separate implementations in two
separate files. The native implementation does not support any kind of
CPU suspend, so its callbacks are greatly simplified. One function,
sunxi_validate_ns_entrypoint, is shared between the two implementations.

Finally, the logic for choosing between implementations is kept in a
third file, to provide for platforms where only one implementation is
applicable and the other is compiled out.

Change-Id: I4914f07d8e693dbce218e0e2394bef15c42945f8
Signed-off-by: Samuel Holland <samuel@sholland.org>

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