Hello, thanks for this explanation. It help a lot to understand what is going on in the NAND_SPL. But I have an addittional question.
I'm wondering where the initialization of the ram is done? Because I think the ram has to be set up before copying the 2kB preloader into the ram. Another thing I don't understand yet is how the boot mode of the mx31 is set? According the ref. manual the inputs NFC_FMS, /NF8BOOT, /NF16BOOT and NF_16BIT_SEL in the NANDFC have to be set to determine what kind of NAND Flash is used. I cannot find these settings anywhere in the u-boot code. Thanks in advance. Best Regards, Ulrich Gerster >>>> Magnus Lilja <[email protected]> 23.06.09 23.31 Uhr >>> >Hi >>2009/6/22 Ulrich Gerster <[email protected]>: >> Hello, >> >> I'm trying to boot from my board with a i.MX31 and small page (512Byte) NAND >> Flash. I applied the patches in v4 which introduce the CONFIG_PRELOADER >> macro. The only example I found where this macro is used is in part 6/6 of >> the patch. There a separate folder structure in nand_spl for the PDK Board >> is created. >> Could you describe the mode of operation of the CONFIG_PRELOADER macro and >> in particular NAND SPL? I'm not sure how to use this functionality in my >> case. >The whole NAND booting procedure is described i >http://lists.denx.de/pipermail/u-boot/2009-April/051826.html . That >description is still valid with the addition that CONFIG_PRELOADER is >now defined when compiling the NAND SPL (in step 2). Also >nand_boot_mx31.c has been renamed to nand_boot_fsl_nfc.c. >Regards, Magnus _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
