From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jerry Van Baren Date: Fri, 1 Jul 2005 08:20:53 -0400 Subject: [U-Boot-Users] uboot on pq2fadsvr In-Reply-To: <74499824050701044466e21088@mail.gmail.com> References: <74499824050701044466e21088@mail.gmail.com> Message-ID: <42C53525.6030405@smiths-aerospace.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de eagle keeper wrote: > Hi all, > and sorry for my question. I have not very clear what to do to compile > uboot for pq2fadsvr with mpc8275 processor. I mean: it is an > evaluation board supported by uboot isn't it? > And if so, why doesn't exist a configuration file? > Is it enought to lighlty modify the 8260ads configuration file? And > wich entries? > > Thank in advance > > Lele In the top level directory, do the following: $ grep PQ2FADS Makefile PQ2FADS_config \ PQ2FADS_lowboot_config \ PQ2FADS-VR_config \ PQ2FADS-VR_lowboot_config \ PQ2FADS-ZU_config \ PQ2FADS-ZU_lowboot_config \ PQ2FADS-ZU_66MHz_config \ PQ2FADS-ZU_66MHz_lowboot_config \ I would expect PQ2FADS-VR_config or PQ2FADS-VR_lowboot_config would work (if you don't have the "lowboot" version, you may want to update your u-boot copy from the head of CVS). The lowboot is configured to boot with the Boot Memory Space HWCW[BMS] set to 1 (i.e. booting at 0x00000000) and is the recommended configuration. In this case you _must_ use the HRCW from flash rather than from the FPGA (sorry, I forgot what they called the registers in the FPGA). I highly recommend using the HRCW from flash and lowboot. If you live right ;-), you can actually make a "lowboot" and a "high boot" version and program both into your board. Run with the lowboot version and, if you screw up u-boot[low] (not that I've ever done that ;-), you can recover by switching the configuration to use the FPGA-supplied HRCW to "boot high" out of the alternate u-boot image. gvb