The CREDITS file was removed from barebox in 2015 by commit 6570288f2d97
("Remove the CREDITS file"). Remove references to it from several files.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

We used to pass a device tree pointer to
imx*_barebox_boot_nand_external(). This no longer works since we compile
barebox with -fPIE.

The problem is that we only have the first 2KiB of the image available
when we start from NAND. The pointer to the device tree is not valid
yet. This hasn't been a problem because the pointer is only used later
when we have the full image in SDRAM. With -fPIE though the actual
pointer is derived indirectly through another pointer, and that pointer
to the pointer is also not valid which causes an invalid pointer to
the device tree later.

This is solved by splitting the NAND boot functions up into two
functions. With imx*_nand_relocate_to_sdram() the board code relocates
the image out of the NFC SRAM into SDRAM. From that point on the device
tree pointer can be accessed and the board can load the image using
imx*_nand_load_image() and can afterwards pass control to barebox
passing whatever device tee pointer it likes.

Fixes: b0348d677b ("ARM: Compile with -fPIE")
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

This adds support for the i.MX8MM.

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

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>

This adds the DDR driver for the i.MX8MQ/i.MX8MM. It's taken from
U-Boot v2020.04-rc1 with slight modifications for barebox

The i.MX8MQ boards in the tree currently use the output of an earlier
version of the NXP i.MX8M DDR Tool which doesn't use a controller driver
but instead does most stuff in board code. It seems this can coexist
with the new driver, only a few helper functions that previously lived
in arch/arm/mach-imx/imx8-ddrc.c are now provided by the new driver.

Tested on an i.MX8MM EVK

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

The i.MX8M boards all have the same code for setting up the UART clock.
Add a common helper for it. In the helper just setup the clocks for all
UARTs as it's not worth it to have separate functions for each UART.

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

The i.MX7 boards have the same code for setting up the UART clock. Add a
common helper function for it.

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

U-Boot has some lowlevel clock functions which take a clock slice index
as argument. Add them for barebox as well to make the code better
comparable to U-Boot.

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

i.MX8 is something different than the i.MX8M and both will not share
this header file, so rename it to imx8m-ccm-regs.h

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

This adds some clock slice indices and CCGR defines needed for the
lowlevel i.MX8M code.

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

The CCM defines used on i.MX7 and i.MX8M do not have any SoC namespace.
Add it to make clear where they are supposed to be used. Since it looks
confusing to call i.MX7 specific defines on i.MX8M and vice versa,
duplicate them for both SoCs.

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

imx8_esdhc_load_image() and friends can't be used on the big variants of
the i.MX8, so rename to imx8m_esdhc_load_image()

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

The big i.MX8 variants have completely other UARTs than the i.MX8M
variants, so rename imx8_uart_setup_ll() to imx8m_uart_setup_ll().

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

Those will differ between i.MX8MQ and i.MX8MM, so give them the
appropriate prefix before introducing i.MX8MM support.

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

Add various base addresses for the i.MX8MM.

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

This adds the iomux definitions for the i.MX8MM, taken from U-Boot
2020-rc1.

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

The name mx7_setup_pad already implies the SoC where it runs on, so we
do not have to pass the iomux base address but can hardcode it in the
function. While at it rename it to imx7_setup_pad() which is more
consistent to other i.MX specific functions.

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

We already have a mx8_setup_pad() function for early iomux setup, but it
is unused. Add a i.MX8MQ specific wrapper for the function which passes
the correct base address to mx8_setup_pad(). Let the boards use this
function. While at it rename mx8_setup_pad() to imx8_setup_pad() which
is more consistent to other i.MX specific functions.

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

This adds defines for the base addresses common to all currently
existing i.MX8M SoCs. Only the base addresses that are known to be
needed for the early SoC code are added. With this we can reuse the
early code for all variants without guessing that the base addresses
are the same for the other variants.

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

Parts of iomux-mx8.h are for i.MX8M and others for i.MX8MQ only, but
never for i.MX8 in general. Split this up into different file and
avoid the imx8_ prefix.

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

Currently the pfuze driver is build dependent to ARCH_IMX6. To make it
possible to work with ARCH_IMX8 we move the imx6_poweroff call to an own
poweroff handler.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

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

Add an option that allows to just load the image into memory, but
return to the calling function instead of directly jumping to the
loaded image.

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

Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

UID information in OCOTP is located in the same place on at least
i.MX6, i.MX7 and i.MX8MQ. Create an SoC-agnostic helper to do all the
work and convert i.MX6 to use it.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

These settings used to be specified per-mode. But the device tree
bindings have these two values attached to the display and not to each
mode. Also for the supported boards it doesn't matter as they all only
have a single mode.

This is preparatory work to add devicetree support for the imxfb driver.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

When only a single i.MX SoC is selected the cpu_is_mx?() macros expand
to static 0 or 1. With the generic DT image enabled it could be though
that the SoC is not a i.MX at all, so make sure that with the generic
DT image enabled the cpu_is_mx?() macros always compare against
__imx_cpu_type

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