From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ilya Averyanov Date: Sat, 21 Apr 2012 16:33:30 +0400 Subject: [U-Boot] [PATCH v3] Add support for MINI2440 (s3c2440). Documentation about the product can be found on: http://www.friendlyarm.net/products/mini2440 In-Reply-To: References: <20120416174633.GA7463@debian> <201204201817.25124.marex@denx.de> <201204202203.33873.marex@denx.de> Message-ID: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de 2012/4/21 Vasily Khoruzhick > 2012/4/21 Ilya Averyanov : > > > > No have problem. > > Available only if you boot from NOR flash. > > If you boot from the NAND 4kb of SRAM (steppingstone) not available. > > For NAND boot it's mapped at 0x0 > For NOR boot it's mapped at 0x40000000 > > NAND controller uses it for booting purpose, but anyway for SPL we > should fit code into > 4k (hardware limitation), so I think using assembly here for SDRAM init is > OK. > > And how will you use the internal SRAM when you boot from NAND, if the SoC writes in the SDRAM read data from NAND, and your data will be overwritten. > Regards > Vasily >