From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <3AC08CA8.D15B04AF@raleigh.ibm.com> Date: Tue, 27 Mar 2001 07:50:48 -0500 From: Ralph Blach MIME-Version: 1.0 To: Zehetbauer Thomas Cc: "'linuxppc-embedded@lists.linuxppc.org'" Subject: Re: booting HardHat on IBM 405GP References: <41EA756DBC9FD0118CFC0020AFDB5C5A188D91@tcint1ntsrv> Content-Type: multipart/mixed; boundary="------------F17B431FC3CD5DB9ED3C91B7" Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: This is a multi-part message in MIME format. --------------F17B431FC3CD5DB9ED3C91B7 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Zehetbauer, Hi, This is a function call to sa, and if you look at the address of sa (the starting address) I'll bet it absoulte 0. So, what happens is you get a jump to zero. Heres the boot process. 1)move the ramdisk to upper memory. 2)uncompress the kernel image starting a real 0. 3)Jump to 0. Chip Blach Zehetbauer Thomas wrote: > > Hi! > > My company is going to develop an embedded solution based on a IBM 406GP > processor. > We are in early development right now and I am trying to boot linux on a > > IBM 25 EB 405 P4 WIN WAL 00 > evaluation kit (this is the information on the bill of delivery). > > Attempting to debug I've found linux/arch/ppc/boot/tree/main.c:start to > be the first function executed. > At the very last step this function calls > > (*(void (*)())sa)(&board_info, > > initrd_start, > > initrd_start + initrd_size, > > cmdline, > > cmdline + strlen(cmdline)); > and I can't find where execution goes on. > > Any help is greatly appreciated. > > TIA > Tom > > PS: Does someone know how to determine the board's revision number? > --------------F17B431FC3CD5DB9ED3C91B7 Content-Type: text/x-vcard; charset=us-ascii; name="rcblach.vcf" Content-Description: Card for Ralph Blach Content-Disposition: attachment; filename="rcblach.vcf" Content-Transfer-Encoding: 7bit begin:vcard n:Blach;Ralph tel;work:919-543-1207 x-mozilla-html:TRUE url:www.ibm.com org:IBM MicroElectronics adr:;;3039 Cornwallis ;RTP;NC;27709;USA version:2.1 email;internet:rcblach@raleigh.ibm.com x-mozilla-cpt:;15936 fn:Ralph Blach end:vcard --------------F17B431FC3CD5DB9ED3C91B7-- ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/