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>

The code wants to test if the lower 16bits of the content of
MX53_CSD0_BASE_ADDR and SDRAM_COMPARE_CONST1 are identical. The assembly
this code was derived from did:

	mov             r5, r0, lsl #16
        mov             r6, r7, lsl #16
        cmp             r5, r6

In C this is better written with masks which is better readable and
avoid this compiler warning:

arch/arm/mach-imx/esdctl-v4.c:613:63: warning: result of '305419896 << 16' requires 46 bits to represent, but 'int' only has 32 bits [-Wshift-overflow=]

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

Fix setup of the SDRAM's MR0 register: 'val' gets overwritten by the chip
select decision and nothing is written to the MR0 register.

This fix is required since some i.MX53 based platforms still use this
software setup routine to configure their SDRAMs.

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

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

This adds support for initializing DDR3 RAMs on the i.MX53 type
SDRAM controller. The code automatically detects size/layout of
the connected RAM, detects the bus width and which chipselects are
populated.
While I believe this code is not 100% generic, it is far too
sophisticated to stay in a single board directory. I'm sure
other boards could make use of this aswell.

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