On Fri, Aug 21, 2009 at 6:23 PM, Peter Belm <[email protected]> wrote:
> > > > This is not quite correct. "romReserved" is only used for the, well, > > reserved entries. There are other parameters passed, these two are > > pretty important for example: > > > The thing I don't get is if you expand the RVECENT macro into the code > wouldn't you get this: > > _start: > b reset; nop /* U-boot entry point */ On power on, first instruction that will get executed is 'b reset, nop'. So code will Jump to reset label from where actual booting sequence start. > > b reset; nop /* software reboot */ > > b romReserved > b romReserved > > .... > > romReserved: > b romReserved > > So wouldn't it get stuck in an infinite loop straight away, calling > romReserved recursively? I'm obviously overlooking something I think. So romReserved will not get called in normal booting-sequence as code will jump to 'reset' label. In case of some exception 'romReserved' will be called and then board will struck in while loop. Thanks, Chetan Nanda > > > And what's the point of passing the second parameter (0-127) to RVECENT > when > it's not used? > > -- > Regards, > Peter Belm > > _______________________________________________ > U-Boot mailing list > [email protected] > http://lists.denx.de/mailman/listinfo/u-boot > >
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