sunxi_nand_spl reading zeros on NextThing C.H.I.P.

sunxi_nand_spl reading zeros on NextThing C.H.I.P.

[Yevhenii Hrabliuk]

Hello,

I'm trying to get latest U-Boot to work on the NextThing C.H.I.P.

After borrowing NFC config from the Chip Pro .dts, I can write the SPL to NAND
after loading U-Boot via sunxi-fel and the bootrom will pick it up fine.
So the "full" sunxi_nand.c works.

SPL's sunxi_nand_spl.c appears to read all zeros however - I checked by adding
prints in spl.c/jump_to_image_no_args().

Can someone please suggest possible things to try to make it work? I tried
tinkering with the settings but I have no idea if that's even the issue.

The NAND is a Toshiba "TC58TEG5DCLTA00"; NTC's settings for it are presumably [1]
and sunxi_nand_spl.c autodetects the following settings:

page_size:16384 ecc_strength:4 ecc_size:1024 addr_cycles:5 nseeds:8 randomize:0

Thanks.

[1]: https://raw.githubusercontent.com/nextthingco/chip-nand-scripts/master/nand_configs/Toshiba-MLC.config

sunxi_nand_spl reading zeros on NextThing C.H.I.P.

[r315]

Hello,

I'm experiencing the same issue, have you manage to solve it?



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sunxi_nand_spl reading zeros on NextThing C.H.I.P.

[r315]

Replying to myself,

I'm using sunxi driver for nand spl, had to remove ECC from "nand_read_page"
function, after that I was able to proceed to second stage of boot.

Not sure of the cause, maybe the u-boot_SPL ECC algorithm is different of
the one on u-boot, which is used to write u-boot on nand as described by
board/sunxi/README.md




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