On 04/09/12 23:57, Stefano Babic wrote:
On 04/09/2012 16:03, Zhong Hongbo wrote:
On 03/09/12 08:14, Marek Vasut wrote:
Dear Zhong Hongbo,
From: Zhong Hongbo bocui107@gmail.com
When the u-boot address of destination equal to __start, no relocation. relocation offset(r9) = 0.
Good, now what kind of issue does this patch fix?
Hi Marek
When you adopt CONFIG_SPL_BUILD framework, no CONFIG_NAND_SPL, if the addr of destination is equal to _start, we should skip u-boot relocation.
In the last, u-boot will count the dest addr, see the below:
adr r1, _start add lr, r0, r1 add lr, lr, r9Here, lr = lr + r9, r9 is the offset of u-boot, So when it do not neet to reolocat, we need to set the zero value for r9 register.
/* setup parameters for board_init_r */ mov r0, r5 /* gd_t */ mov r1, r6 /* dest_addr */ /* jump to it ... */ mov pc, lrI can confirm this issue - I see this when I ported SPL to a MX35 board. However, clearing r9 was not enough. I had to fix also _rel_dyn_* to make SPL working, and I did changing the start.S in the same way start.S for arv7 is built.
Do you not have these issues ?
Hi Stefano,
That is enough for my smdk6400 board.
Thanks, hongbo
Regards, Stefano