On Wed, 13 Dec 2017 22:20:57 +0800 herbert yuanjp@hust.edu.cn wrote:

Hi

I am very sorry to ask this simple question. I read a lot of document and googled online, but I still feel puzzled by the SPL of U-Boot.

I has an ancient SoC s3c2440 which is armv4t architecture. s3c2440 will copy the first 4K code on NAND to static SRAM. It is obvious that u-boot bin is bigger than 4K. so Here is my question:

It is very unlikely that the 4K that you load is the SPL.

It may be a bl1 image, which is crafted by SoC vendor and needs to be signed.

I can only recommend looking on the old u-boot from the board BSP and check what is going on.

IIRC the s3c2440 is not supported by u-boot anymore.

1. In this condition, do I must compile a SPL bin？ and flash it to

the first page of NAND flash. if it's, I think the SPL should be less than 4K, or it's meaningless, It still need to copy remain content, and has no difference with a single u-boot.

2. can I only compile a regular u-boot and do copy work and relocate

work at this single u-boot. namely, merge SPL and regular u-boot, does u-boot support this framework?

thanks very much!

From 袁建鹏 (Yuan Jianpeng)

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Best regards,

Lukasz Majewski

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