From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Roese Date: Wed, 23 Apr 2008 10:26:51 +0200 Subject: [U-Boot-Users] pci memory booting on ppc460 In-Reply-To: <480E55CC.4010807@ovro.caltech.edu> References: <20080422205307.B644E24AB5@gemini.denx.de> <480E55CC.4010807@ovro.caltech.edu> Message-ID: <200804231026.51751.sr@denx.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Tuesday 22 April 2008, David Hawkins wrote: > So, its not impossible, but it does seem like more work than > using Flash to boot the board. Full ACK from me. I would always recommend to use a small NOR FLASH with a full-blown U-Boot for booting from NOR with full DDR2 setup etc. All this will be hard to implement with all the restrictions for booting from PCI (even though I have never done this before, but I suspect that it will be quite as limited as booting from NAND). > But of course there may be > reasons to want to boot over PCI ... Yes, what is the main reason you want to do this? As mentioned above, I recommend to boot from a small NOR FLASH (512kB) and "wait" in U-Boot for the PCI host to provide the OS/application image via PCI. Best regards, Stefan ===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: office at denx.de =====================================================================