Re: [U-Boot-Users] is it possible to make the booting sequence in U-boot?

Le 5/10/07 1:02, « Wolfgang Denk » wd@denx.de a écrit :

In message BAY124-W1322E27AA87E199D7EB970A3A80@phx.gbl you wrote:

...

Thanks a lot! But I am not sure, is there the "if " command in uboot? I rea d the manual and did not find it. I am just work on it for a few weeks, so. ..

Yes, there is, if you configure the hush shell as command line parser.

But then:

...

...

Set env try First
Boot From First
    if not enter in entry point
        Set env try First
        Boot From second
            if not enter in entry point
                Error Message No system available
            else
                if watchdog timeout
                    Error Message No system available
                else
                        Banzai System Start
                endif
            endif
    else
        if watchdog timeout
            Error Message No system available
        else
            Set env try First
            Boot From second
            if not enter in entry point
                Error Message No system available
            else
                if watchdog timeout
                    Error Message No system available
                else
                        Banzai System Start
                endif
            endif
        endif
    endif

This is overly complex and not needed at all.

Complex, maybe but its allow you to known the current state of your boot and it just a timeline algo not script the run boot_nand; run boot_flash;print $error_message

Can be represent as fallow

Set env try First Boot From First if not enter in entry point Set env try First Boot From second if not enter in entry point Error Message No system available else Banzai System Start endif endif else Banzai System Start endif

Best regards,

Wolfgang Denk