[U-Boot-Users] why "go 0x0" and "go 0x0c000000" could start u-boot?
hello, everyone:
(Will somebody write to me to tell me how i can see your replies?)
when reset cpu or power up, u-boot starts, press any key to stop it automaticly boot the kernel, i test "go 0x0" and "go 0x0c000000", but two of them could go to restart u-boot! I am sure u-boot was flashed in 0x0c000000, but why "go 0x0" has the same effect?!
With my mxlads board, I know another truth, when power up, cpu exec the first cmd in 0x0c000000. (this could be set by switches)
Somebody know why?
HoHo_Zhao
HoHo_Zhao hoho_zhao@sina.com wrote:
hello, everyone:
(Will somebody write to me to tell me how i can see your replies?)
If you gotten two replies at the same time, it means you can see my reply and our replies.
I am sure u-boot was flashed in 0x0c000000, but why "go 0x0" has the same effect?!
Probably 0x0 is kind of invalid address for normal access. So 'go 0x0' made CPU in check-stop status and then it restart CPU like reset from 0x0c000000. Pls check the board memory map to understand it.
Regards,
Sam
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participants (2)
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HoHo_Zhao -
Sam Song