Sanitise includes across codebase ...

Enforce full include path for includes. Deprecate old paths.

The following folders inside include/lib have been left unchanged:

- include/lib/cpus/${ARCH}
- include/lib/el3_runtime/${ARCH}

The reason for this change is that having a global namespace for
includes isn't a good idea. It defeats one of the advantages of having
folders and it introduces problems that are sometimes subtle (because
you may not know the header you are actually including if there are two
of them).

For example, this patch had to be created because two headers were
called the same way: e0ea0928d5b7 ("Fix gpio includes of mt8173 platform
to avoid collision."). More recently, this patch has had similar
problems: 46f9b2c3a282 ("drivers: add tzc380 support").

This problem was introduced in commit 4ecca33988b9 ("Move include and
source files to logical locations"). At that time, there weren't too
many headers so it wasn't a real issue. However, time has shown that
this creates problems.

Platforms that want to preserve the way they include headers may add the
removed paths to PLAT_INCLUDES, but this is discouraged.

Change-Id: I39dc53ed98f9e297a5966e723d1936d6ccf2fc8f
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

plat: imx: Add i.MX8MQ basic support ...

i.MX8MQ is new SOC of NXP's i.MX8M family based on
A53. It can provide industry-leading audio, voice
and video processing for applications that scale
from consumer home audio to industrial building
automation and mobile computers

this patchset add the basic supoort to boot up
the 4 X A53. more feature will be added later.

Signed-off-by: Bai Ping <ping.bai@nxp.com>

Standardise header guards across codebase ...

All identifiers, regardless of use, that start with two underscores are
reserved. This means they can't be used in header guards.

The style that this project is now to use the full name of the file in
capital letters followed by 'H'. For example, for a file called
"uart_example.h", the header guard is UART_EXAMPLE_H.

The exceptions are files that are imported from other projects:

- CryptoCell driver
- dt-bindings folders
- zlib headers

Change-Id: I50561bf6c88b491ec440d0c8385c74650f3c106e
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

imx: imx_wdog: Add code to initialize the wdog block ...

The watchdog block on the IMX is mercifully simple. This patch maps the
various registers and bits associated with the block.

We are mostly only really interested in the power-down-enable (PDE) bits in
the block for the purposes of ATF.

The i.MX7 Solo Applications Processor Reference Manual details the PDE bit
as follows:

"Power Down Enable bit. Reset value of this bit is 1, which means the power
down counter inside the WDOG is enabled after reset. The software must
write 0 to this bit to disable the counter within 16 seconds of reset
de-assertion. Once disabled this counter cannot be enabled again. See
Power-down counter event for operation of this counter."

This patch does that zero write in-lieu of later phases in the boot
no-longer have the necessary permissions to rewrite the PDE bit directly.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>

imx: imx_caam: Add code to initialize the CAAM job-rings to NS-world ...

This patch defines the most basic part of the CAAM and the only piece of
the CAAM silicon we are really interested in, in ATF, the CAAM control
structure.

The CAAM itself is a huge address space of some 32k, way out of scope for
the purpose we have in ATF.

This patch adds a simple CAAM init function that assigns ownership of the
CAAM job-rings to the non-secure MID with the ownership bit set to
non-secure.

This will allow later logic in the boot process such as OPTEE, u-boot and
Linux to assign job-rings as appropriate, restricting if necessary but
leaving open the main functionality of the CAAM to the Linux NS runtime.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>

imx: imx_hab: Define a HAB header file ...

The High Assurance Boot or HAB is an on-chip method of providing a
root-of-trust from the reset vector to subsequent stages in the bootup
flow of the Cortex-A7 on the i.MX series of processors.

This patch adds a simple header file with pointer offsets of the provided
set of HAH API callbacks in the BootROM.

The relative offset of the function pointers is a constant and known
quantum, a software-contract between NXP and an implementation which is
defined in the NXP HAB documentation.

All we need is the correct base offset and then we can map the set of
function pointers relative to that offset.

imx_hab_arch.h provides the correct offset and the imx_hab.h hooks the
offset to the pre-determined callbacks.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Ryan Harkin <ryan.harkin@linaro.org>

imx: imx_snvs: Define a SNVS header and memory map ...

This commit defines two things.

- The basic SNVS memory map. At the moment that is total overkill for the
  permission bits we need to set inside the SNVS but, for the sake of
  completeness define the whole SNVS area as a struct.

- The bits of the HPCOMR register

  A permission fix will need to be applied to the SNVS block prior to
  switching on TrustZone. All we need to do is waggle a bit in the HPCOMR
  register. To do that waggle we first need to define the bits of the
  HPCOMR register.

- A imx_snvs_init() function definition

  Declare the snvs_init() function so that it can be called from our
  platform setup code.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>

imx: imx_csu: Add a simple CSU layer ...

- Add a header to define imx_csu_init().
- Defines the Central Security Unit's Config Security Level
  permission bits.
- Define CSU_CSL_OPEN_ACCESS permission bitmask
- Run a loop to setup peripheral CSU permissions

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>

imx: imx_aips: Add initial AIPS support ...

This patch adds an initial AHB-to-IP TrustZone (AIPS-TZ) initialization
routine. Setting up the AIPSTZ controller is required to inform the SoC
interconnect fabric which bus-masters can read/write and if the read/writes
are buffered.

For our purposes the initial configuration is for everything to be open. We
can lock-down later on as necessary.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>

imx: imx_io_mux: Define an IO-mux layer ...

This patch defines:

- The full range of IO-mux register offsets relative to the base address of
  the IO-mux block base address.

- The bits for muxing the UART1 TX/RX lines.

- The bits for muxing the UART6 TX/RX lines.

- The pad control pad bits for the UART

Two functions are provided to configure pad muxes:

- void io_muxc_set_pad_alt_function(pad_mux_offset, alt_function)
  Takes a pad_mux_offset and sets the alt_function bit-mask supplied.
  This will have the effect of switching the pad into one of its defined
  peripheral functions. These peripheral function modes are defined in the
  NXP documentation and need to be referred to in order to correctly
  configure a new alternative-function.

- void io_muxc_set_pad_features(pad_feature_offset, pad_features)
  Takes a pad_feature_offset and applies a pad_features bit-mask to the
  indicated pad.
  This function allows the setting of PAD drive-strength, pull-up values,
  hysteresis glitch filters and slew-rate settings.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>

imx: imx_clock: usb: Add USB clock API ...

This set of patches adds a very minimal layer of USB enabling patches to
clock.c. Unlike the watchdog or UART blocks the USB clocks pertain to PHYs,
the main USB clock etc, not to different instances of the same IP block.

As a result this patch-set takes the clock CCGR clock identifier directly
rather than as an index of an instance of blocks of the same type.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>

imx: imx_clock: wdog: Add watchdog clock API ...

This patch adds a set of functions to enable the clock for each of the
watchdog IP blocks.

Unlike the MMC and UART blocks, the watchdog blocks operate off of the one
root clock, only the clock-gates are enable/disabled individually.

As a consequence the function clock_set_wdog_clk_root_bits() is used to set
the root-slice just once for all of the watchdog blocks.

Future implementations may need to change this model but for now on the one
supported processor and similar NXP SoCs this model should work fine.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>

imx: imx_clock: mmc: Add USDHC clock API ...

This patch adds an API to configure up the base USDHC clocks, taking a
bit-mask of silicon specific bits as an input from a higher layer in order
to direct the necessary clock source.

Signed-off-by: Jun Nie <jun.nie@linaro.org>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>

imx: imx_clock: uart: Add UART clock API ...

This patch adds an API to configure up the base UART clocks, taking a
bit-mask of silicon specific bits as an input from a higher layer in order
to direct the necessary clock source.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>

imx: imx_clock: Add driver and associated clock register definitions ...

This commit:

- Defines a clock stub with a conjoined header defining the clock
  memory map.

- Defines the CCM Clock Gating Register which comes in a quadrumvirate
  register set to read, set, clear and toggle individual clock gates into
  one of four states based bitmask.

  00: Domain clocks not needed
  01: Domain clocks needed when in RUN
  10: Domain clocks needed when in RUN and WAIT
  11: Domain clocks needed all the time

- Defines clock control register bits

  There are various quadrumvirate register blocks target-root, misc-root,
  post-root, pre-root in the CCM.

  The number of registers is huge but the four registers in each
  quadrumvirate block contain the same bits, so the number of bit
  definitions is actually quite low.

- Defines clock identifiers

  An array of clock gates is provided in the CCM block. In order to index
  that array and thus enable/disable clock gates for the right components,
  we need to provide meaningful names to the indices.

  Section 5.2.5 of the i.MX7 Solo Application Processor Reference Manual
  Rev 0.1 provides the relevant details.

- Defines target mux select bits
  This is a comprehensive definition of the target clock mux select bits.
  These bits are required to correctly select the clock source. Defining
  all of the bits up-front even for unused blocks in ATF means we can
  switch on any block we want at a later date without having to write new
  code in the clock-mux layer.

- Defines identifier indices into root-slice array
  The root-slice array of control registers has a specific set of indices,
  which differ from the clock-gate indices.

- Provides a clock gate enable/disable routine
  Provides a clock-gate enable/disable routine via the set/clr
  registers in a given clock-gate control register block.

  This index passed should be one of the enums associated with CCM and
  depending on enable/disable being passed either set or clr will be
  written to.

  The Domain0 bits are currently the only bits targeted by this write, more
  work may need to be done on the domain bits in subsequent patches as a
  result.

- imx: Adds set/clr routines to clock layer

  Adds a set and clr routine to the clock layer. These routines allow us to
  access the set and clear registers of the "target" block registers. These
  are the registers where we select the clock source from the available list.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>

libc: Fix all includes in codebase ...

The codebase was using non-standard headers. It is needed to replace
them by the correct ones so that we can use the new libc headers.

Change-Id: I530f71d9510cb036e69fe79823c8230afe890b9d
Acked-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

imx: imx8qx: add domain suspend/resume support ...

Add domain suspend/resume support, Linux kernel
can "echo mem > /sys/power/state" to put system
into suspend mode, all CPUs and cluster will be
powered off and can be waked up if irq pending
in GIC, tested on i.MX8QX MEK board.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>

imx: imx8qx: add system reset support ...

Add system reset support for i.MX8QX,
when Linux kernel issues "reboot" command,
TF-A will send command to inform system
controller to reset whole board according
to board design, tested on i.MX8QX MEK board.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>

imx: imx8qx: add system off support ...

Add system power off support for i.MX8QX,
when Linux kernel issues "poweroff" command,
TF-A will send command to inform system
controller to power off whole board according
to board design, tested on i.MX8QX MEK board.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>

Support for NXP's i.MX8QM SoC ...

NXP's i.MX8QM is an ARMv8 SoC with 2 clusters, 2 Cortex-A72
cores in one cluster and 4 Cortex-A53 in the other cluster,
and also has system controller (Cortex-M4) inside, documentation
can be found in below link:

https://www.nxp.com/products/processors-and-microcontrollers/
applications-processors/i.mx-applications-processors/i.mx-8-processors:IMX8-SERIES

This patch adds support for booting up SMP linux kernel (v4.9).

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>

Support for NXP's i.MX8QX SoC ...

NXP's i.MX8QX is an ARMv8 SoC with 4 Cortex-A35 cores and
system controller (Cortex-M4) inside, documentation can
be found in below link:

https://www.nxp.com/products/processors-and-microcontrollers/
applications-processors/i.mx-applications-processors/i.mx-8-processors:IMX8-SERIES

This patch adds support for booting up SMP linux kernel (v4.9).

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>

Support for NXP's imx SoC common function ...

This patch adds support for NXP's imx SoC common
function support like topology, gic implementation.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>

Support for NXP's imx SoC debug uart ...

Add NXP's imx SoC debug uart driver.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>

Support for NXP's i.MX8 SoCs IPC ...

NXP's i.MX8 SoCs have system controller (M4 core)
which takes control of clock management, power management,
partition management, PAD management etc., other
clusters like Cortex-A35 can send out command via MU
(Message Unit) to system controller for clock/power
management etc..

This patch adds basic IPC(inter-processor communication) support.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>