From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jerry Van Baren Date: Thu, 30 Nov 2006 23:26:20 -0500 Subject: [U-Boot-Users] [PATCH] MPC8360EMDS lowboot option In-Reply-To: <1164945637.3655.21.camel@localhost.localdomain> References: <456FA55F.9000602@comcast.net> <1164945637.3655.21.camel@localhost.localdomain> Message-ID: <456FAEEC.4010902@comcast.net> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Dave Liu wrote: > On Thu, 2006-11-30 at 22:45 -0500, Jerry Van Baren wrote: >> Hi Dave Liu, >> >> The following patch adds a configuration to do "low boot" (HRCW.BMS = 0) >> as well as "high boot" (HRCW.BMS = 1). >> >> Many people, myself included :o) prefer to boot out of low memory. It >> has an added benefit that, if you screw up the image of of u-boot in low >> memory, you can switch SW9.3 FCFG and boot using the BCSR, which "high >> boots" (assuming you smart enough to keep a valid u-boot image at >> 0xFFF00000). > > The 8360EMDS u-boot is booting at low memory in default now. You can > change it for high memory. > >> The patch is against the top of the denx.de repository (thanks, >> Wolfgang, for pulling the fsl patches). > > Thanks Wolfgang and Stefan for pulling them. Yes, if the board is not configured as a PCI slave. I forgot to ask, is that a hardware restriction or is it OK to "boot low" as a PCI slave (mostly curious)? In defense of the patch, it is nice to be able to easily configure u-boot to boot high or low. The Makefile configuration trick is really handy and is how several boards handle it. Thanks, gvb