From mboxrd@z Thu Jan 1 00:00:00 1970 From: Reinhard Meyer Date: Wed, 08 Dec 2010 20:47:57 +0100 Subject: [U-Boot] Port to at91sam9g45-ekes In-Reply-To: References: Message-ID: <4CFFE0ED.7000000@emk-elektronik.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Dear Morten Kristiansen, > Hi U-boot members. I have ported u-boot to the AT91SAM9G45-EKES board. I > have, however, run into a little problem. The internal boot-ROM in the > SAM9G45 processor only accepts boot-loaders up to 60K and the loader I have > is already 70K. I therefore need an chainloader in between. Is there a > recommended approach for this, something like You are likely to end near 200k... > > 1. Use some other smaller bootloader to boot u-boot. That would usually be AT91BOOTSTRAP, which initializes SDRAM and loads software from NAND, SPI, MMC etc. > 2. Use a tiny version of u-boot to boot the real u-boot. We don't have that (yet) for AT91. > 3. Use pieces u-boot, e.g. by replacing start_armboot Are you using current u-boot, like at least the released 2010.09 ? Regards, Reinhard