Ben NanoNote New Owner's Questions

Yi Zhang yi at sharism.cc
Sun Mar 14 13:20:03 EDT 2010


Boot steps wrote by xiangfu is added to wiki:

http://en.qi-hardware.com/wiki/BenOwner#Boot_Steps

Yi

On 2010-3-14, at 下午12:40, Xiangfu Liu wrote:

> kahl at cas.mcmaster.ca wrote:
>> I wrote:
>>  > Xiangfu Liu wrote:
>>  >  >  > Wolfgang Spraul wrote:
>>  >  > >>  How can I switch Ben off while it is in USB_BOOT_mode,
>>  >  > >>  with no usb_boot tools on the host side?  >  > >>  (I  
>> ended up taking the battery out.)  >  > >  >  > > Battery out  
>> probably the only way.
>>  >  >  >  > sometimes I use the "reset" button at the back of Ben.
>>  >  > What does that exactly do? Reboot the machine
>>  > in normal mode?
>> Sorry, I meant to ask:
>> What is the expected result of pressing the reset button?
>> (I would assume that the expected result of pressing the reset button
>>  does not depend on the kind of state Ben is in,
>>  but if it does depend, I would like to know how it depends.)
> Hi  Wolfram sorry for my bad English :-)
>
> it's does not depend on the kind of state Ben is in.
>
>> Does pressing the reset button reboot the machine into normal mode?
>> (Or does it perhaps just power it off?)
>
> let me talk about the ben boot.
>
> STEPS:
> 1. poweron Ben 2. hardware will check the usbboot pin(under the  
> battery)
>   --> if usbboot pin short goto [Hardware USBOOT Mode] --> [wait PC  
> usb connect] --> [END]
>   --> if not short. goto step[3].
> 3. load the bootloader to ram.
> 4. bootloader will check if key [U], [S], [M] pressed.
>   --> if [U] pressed goto [Software USBBOOT Mode] --> [wait PC usb  
> connect] --> [END]
>   --> if [S] pressed. enable the serial console. goto step[5]
>   --> if [M] pressed. goto step[7].
>   --> if none pressed. direct goto step[6].
> 5. wait input from serial console for 5secs.
>   --> if something input, enable bootloader console. stop at  
> bootloaer.
>   --> nothing input. goto step[6]
> 6. load the kernel, boot the rootfs in NAND.
> 7. load the kernel, boot the rootfs in sd card.
>
> so whenever you press [reset]. it's will always goto SETP[1] and do  
> those follow steps.
>
>
> PS:
> if something wrong with step[3]. the nanonote screen will black and  
> nothing happen.
> so if you meet black screen issue. just reflash the bootloader.
>
> if something wrong with load kernel. ben will stop at screen with  
> some messgge like:
> fail to load kernel ...... so we need reflash the kernel.
>
> if something wrong with boot to rootfs. ben will stop at slash  
> screen "OpenWrt". and no message
> at the end of screen. so we need reflash the rootfs.
>> Wolfram
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>
>
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