From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mirek23 Date: Mon, 25 May 2009 01:43:21 -0700 (PDT) Subject: [U-Boot] U-boot and linux command line parameters In-Reply-To: <23698396.post@talk.nabble.com> References: <23698396.post@talk.nabble.com> Message-ID: <23703431.post@talk.nabble.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de When studying the u-boot (1.2.0) source code I have found that it is register r6 and r7 which pass the location of the command line parameters and the size. The location of the parameters could be changed in u-boot according to the macro: CFG_BOOTMAPSZ There is however the message in all configuration files for u-boot that Linux can only map first initial 8MB so it seems to be not possible to set CFG_BOOTMAPSZ to something higher than 8MB? /* * For booting Linux, the board info and command line data * have to be in the first 8 MB of memory, since this is * the maximum mapped by the Linux kernel during initialization. */ #define CFG_BOOTMAPSZ (8 << 20) /* Initial Memory map for Linux */ Does somebody have an idea how to bypass this limitation in linux 2.6.23 or higher? M. -- View this message in context: http://www.nabble.com/U-boot-and-linux-command-line-parameters-tp23698396p23703431.html Sent from the Uboot - Users mailing list archive@Nabble.com.