Re: [U-Boot] [RFC] arm926ejs: fix jump to RAM nand_boot

Hello Wolfgang,

Wolfgang Denk wrote:

Dear Heiko Schocher,

In message 4CCFAFE4.3000600@denx.de you wrote:

...

• preloader copies first page of nand (nand_spl code) to 0xbb000000 (some cpu internal mem) and jumps to this address
• nand_spl does lowlevelinit, relocate itself to TEXT_BASE (nand_spl code)

Why is this relocation needed? I understand that this 0xbb000000

Thats the question to solve ... don;t know, why nand_spl code on arm (and other architectures?) do this ... I try to have a look to find out, if we can run the nand_spl code complete from this address, and immedietaly copy u-boot from nand to ram ...

address is determined by the given hardware ans as such always fix?

Yep.

...

But as codesize changes (and with it relocation address) this is not a perfect solution.

Indeed. CONFIG_SYS_NAND_U_BOOT_SIZE should be dropped, and the avtual value should be derived from the actual U-Boot image building process.

Yep.

bye, Heiko