topic Re: The data read from nand flash is wrong during booting. in T-Series

The data read from nand flash is wrong during booting.

wangmeng0427 — Mon, 21 Dec 2020 09:07:13 GMT

I'm debugging booting from nand flash on T1024 CPU, using the config T1024RDB_NAND_defconfig of u-boot. After the ddr initialization, loading uboot from nand flash. But the datas from nand flash are all 0xff.

The function flow is : board_init_r(t102xrdb/spl.c)->nand_boot(fsl_ifc_spl.c)->nand_spl_load_image(fsl_ifc_spl.c).

During the booting, there is no nand_init. Is the flow right?

Thanks very much.

Re: The data read from nand flash is wrong during booting.

yipingwang — Tue, 22 Dec 2020 05:51:51 GMT

You need to modify section "ONFI NAND Flash mode0 Timing Params" in include/configs/T102xRDB.h in u-boot source code, please calculate IFC timing configuration based on the datasheet of NAND flash on your target board.

For IFC timing calculation, please refer to https://community.nxp.com/t5/Layerscape-Knowledge-Base/IFC-Controller-Configuration-on-QorIQ-Custom-Boards/ta-p/1109156

Re: The data read from nand flash is wrong during booting.

wangmeng0427 — Fri, 25 Dec 2020 06:32:39 GMT

Hi yiping,

The issue has been resolved. Thanks very much.