Dear Sascha,
Hi Igor,
On Wed, Aug 19, 2015 at 11:48:41AM +0300, Igor Plyatov wrote:
Dear all,
for debugging purposes I need to add some delays into the <BOARD
NAME>.imxcfg file, but does not know which format it is. It looks
like some kind of C, but it is confusing.
Where is defined "wm 32", "soc", "dcdofs", "loadaddr" command and others?
They are interpreted in the imx-image tool, see scripts/imx/README and
scripts/imx/imx-image.c. The imx-image tool converts the commands into a
dcd table which is understood by the Freescale i.MX ROM Code. The ROM
code does not provide a delay command, so what you are looking for does
not exist. All the is is a nop command. This is currently not
implemented in imx-image, you would have to add it.
Which commands I can use in the IMXCFG file to create very early
delay, before initialization of DRAM?
As said, there is nop. Otherwise there is a 'check' command to poll for
setting/clearing bits.
See the i.MX reference manual in the "Device Configuration Data (DCD)"
section for further information.
Thank you for explanation above!
Everywhere I see references to DCD in the Reference Manual, but I can
not find details about DCD in the MCIMX51RM.pdf Rev. 1 2/2010.
If you know, please give me a link to document where DCD explained in
details, because any attempt to setup GPIO output, fails. Device just
does not boot at all.
wm 32 0x73f88000 0x689c0319 /* hangup line in flash-header.imxcfg */
Best wishes.
--
Igor Plyatov
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