On Fri, Mar 06, 2020 at 09:41:42AM +0100, Giorgio Dal Molin wrote: > Hi all, > > I've just double checked the reg=val entries I have in my DTD for the imx7d > but could not find anything wrong with it, it is very similar to the > 'arch/arm/mach-imx/include/mach/flash-header/imx7d-ddr-sabresd.imxcfg'. > > What I don't understand is the absolute address of the DTD present at offset 0x40c: > in my barebox image it is 0x8000042c: when the rom code in the imx7 reads the image > from the qspi flash it must transfer it to the OCRAM (0x00910000) because it is > the only memory that works at this early stage of the boot process; but then, when it > searches for the DCD it finds its absolute address, at offset 040c, to be 0x8000042c; > but this address is on the DDR space that is still not configured and so cannot be accessed. > > Here is a hex dump of the barebox image I'm using: > > ... > 0400: 0xd1 0x00 0x20 0x40 0x00 0x10 0x00 0x80 0x00 0x00 0x00 0x00 0x2c 0x04 0x00 0x80 > 0410: 0x20 0x04 0x00 0x80 0x00 0x04 0x00 0x80 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 > 0420: 0x00 0x00 0x00 0x80 0x00 0x00 0x07 0x00 0x00 0x00 0x00 0x00 0xd2 0x01 0xbc 0x40 > 0430: 0xcc 0x01 0x6c 0x04 0x30 0x34 0x00 0x04 0x4f 0x40 0x00 0x05 0x30 0x39 0x10 0x00 > 0440: 0x00 0x00 0x00 0x02 0x30 0x7a 0x00 0x00 0x01 0x04 0x00 0x01 0x30 0x7a 0x01 0xa0 This is quite unreadable. Could you post the output of 'md -s /dev/m25p0 1k+1k' ? Sascha -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
