We load u-boot into the internal flash of the LPC4357. We use QSPI flash for
the Linux image. After u-boot configures the external SDRAM, Linux gets loaded
into it, and then uncompressed and booted.
To do this required some modifications to u-boot from the Emcraft source. I
believe their
We're using a variation of it developed by Emcraft for that very same chip. It
currently only uses the M4 portion, but it has worked pretty well for us. The
source code is located at: https://github.com/EmcraftSystems/linux-emcraft
We also used their expertise to perform a few modifications
What hardware are you using? Are you using a development board or a custom
design? If you can try this on some known good hardware, then that will make
this easier to work with.
I can suggest u-boot modifications to you once I know more about your platform.
Thanks,
Doug Brainard
From:
Config header will be something like the attached infinisource-lpc4357.h file
that I included. Just create a new file with a name for your board in the same
directory as mentioned below. The file needs to be modified for your desired
features and board requirements.
Thanks,
Doug Brainard
Without a login, I apparently can't look at the schematic of the Embedded
Artist's Dev Kit, so I'm going to be making some assumptions here. The
following example assumes that the QSPI flash is attached to the following pins
(but it's relatively easy to change):
ยท CS attached to P3.8
