From mboxrd@z Thu Jan 1 00:00:00 1970 From: George G. Davis Date: Wed, 22 Dec 2004 00:23:02 -0500 Subject: [U-Boot-Users] Re: What does the Kernel get from U-boot ? In-Reply-To: <41C8C898.9060405@acm.org> References: <20041221121101.A7F6F1D04F7@sc8-sf-uberspam1.sourceforge.net> <41C8C898.9060405@acm.org> Message-ID: <20041222052301.GE7494@mvista.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Tue, Dec 21, 2004 at 08:06:32PM -0500, Federico Lucifredi wrote: > Hello Booters, > Just a quick newbie-style question: what is passed between U-boot > and the kernel? Just the bootargs env variable or is there any other > (more intimate :-) relationship between the two? What I am asking is, > what does the kernel get from U-boot aside from the location of the root > filesystem? I guess the answer is 'nothing', but if it turns out there > is more, I'd like to know =) If it gets nothing more than the cmdline, that alone is a lot since it allows flexibility of booting the kernel in a variety of different ways, e.g. what to exec as init; MTD flash, NFS; ramdisk based root among others; what to use as console device; changing MTD flash partition layouts; memory size; etc.,. Other parameters passed into the Linux kernel from U-Boot vary by architecture and board. For that, see the README, source and, perhaps, http://www.denx.de/twiki/bin/view/DULG/WebHome. -- Regards, George > > -Federico > > > _________________________________________ > -- "'Problem' is a bleak word for challenge" - Richard Fish > > Muad'Dib of Caladan (Federico L. Lucifredi)- Harvard University & BU > http://metcs.bu.edu/~lucifred > > > > ------------------------------------------------------- > SF email is sponsored by - The IT Product Guide > Read honest & candid reviews on hundreds of IT Products from real users. > Discover which products truly live up to the hype. Start reading now. > http://productguide.itmanagersjournal.com/ > _______________________________________________ > U-Boot-Users mailing list > U-Boot-Users at lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/u-boot-users