arm: imx: add initial imx8mp support ...

This adds base support for the i.MX8MP SoC. Not much to do here as this
SoC is quite similar to the i.MX8M. This adds:

- Kconfig symbols
- bootsource detection
- register base address defines
- iomux defines

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>

kbuild: resync top Makefile, mkmakefile, tags.sh with Linux 5.7-rc4 ...

The prologue of the build system is not specific to Linux or Barebox.
Paritially resync with Linux 5.7-rc4

- In Linux, $(objtree) is always '.', and $(srctree) might be relative.
  I am keeping both absolute for now to avoid unexpected breakage.

- I did not resync single target for now. We need to touch
  Makefile.build a lot if we want to resync it.

- 'export CDPATH=' is Barebox-only code, which was added by
  commit 6cc8d0544658 ("Makefile: disable CDPATH"). Keep it.

- KBUILD_SRC no longer exists in the upstream Linux. I replaced it
  with building_out_of_srctree.

- scripts/mkmakefile does not contain anything specific to Linux or
  Barebox. Resync it with Linux 5.7-rc4

- scripts/tags was imported from Linux 3.6 with some cherry-picks on
  top of that. Resync it with Linux 5.7-rc4

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/misc'

firmware: Fix dependencies for firmware in PBL ...

The object files for the PBL are not regenerated when the firmware files
are updated. The dependency from the pbl-*.gen.o to the firmware files
are missing, add them.

Reported-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: i.MX8M: Add TF-A loading support for i.MX8MM ...

Basically the same as for i.MX8MQ, just some function split up needed
to account for different base addresses for the TF-A on both SoCs.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/misc'

firmware: add gitignore file for *.bin ...

There is no intention to commit static firmware to this directory.
If there is a use case, gitignore can be overridden explicitly.

Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: Layerscape: Add PPA firmware support ...

The "Primary Protected Application" (PPA) is a PSCI compliant firmware
distributed by NXP. It is needed to start the secondary cores on
Layerscape SoCs. Without it Linux will be started in EL3 and doesn't
work properly. The precompiled firmware images can be found on
https://github.com/NXP/qoriq-ppa-binary and are not included in
barebox.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: Add Freescale FMan ethernet support ...

This adds ethernet support for the Freecale Layerscape SoCs. The
architecture in these SoCs is called "Data Path Acceleration
Architecture" (DPAA). It is comprised of:

- The Queue Manager (QMan)
- Buffer Manager (BMan)
- Frame Manager (FMan)
- Multirate Ethernet Media Access Controller (mEMAC)

The code is based on the corresponding U-Boot driver enriched with
device tree parsing and proper device driver support.

Tested on LS1046a, should work on other SoCs aswell with some minor
quirks. SerDes support has been removed for now.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

firmware: drop the imx subdir ...

We don't intend to ship any files in this directory, so there is no
risk of the directory getting too crowded over time. Drop the subdir
as this makes it easier for a outer build system to drop all the
needed firmwares into the correct directory.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

firmware: add a note about license implications ...

Building additional firmware into the boot image has some license
implications, which should be considered by the user, so add a short
note about this.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

firmware: imx: remove prebuilt ATF binary ...

The prebuilt ATF binary is in fact a license compliance issue. While
the used BSD-3-clause license allows aggregation with the Barebox
binary, the chosen license requires us to ship the license text
itself for the source distribution and also for the binary form if
the built boot image contains the ATF binary.

As this is a restriction that only applies to some boot images,
depending on the Barebox configuration, it's non-trivial to do
proper license compliance from within the Barebox source.

Remove the prebuilt binary and rely on the external build system
or user to provide the correct binary. Most system build systems
already provide a proper way to handle the license dependency
issue.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

firmware: Fix copy-paste comment mistake ...

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: i.MX: fimware: Add pre-built BL31 ATF blob ...

Running Linux on i.MX8M requires us to use and properly set up a ARM
Trusted Firmware blob. For the sake of convenience, add a pre-built
blob to our firmware tree, so it can be used by individual boards.

This blob was built using Buildroot:

 - commit: 6b02b82
 - defconig: freescale_imx8mqevk_defconfig

The resulting file of interest is output/images/bl31.bin

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: i.MX8: Add i.MX8mq EVK support ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Add builtin firmware support ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
[andrew.smirnov@gmail.com: Add dummy.o in case directory is empty]
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>