Luigi, I believe the kernel you retrieve from Freescale side is based on dBug bootloader and is not u-boot compatible; thus, will cause error when trying to bring up kernel from u-boot. An engineer is working on the new update release for 547x_8x soon. Once the kernel is updated, I believe no update is needed to be done in u-boot side.
Regards, TsiChung -----Original Message----- From: Luigi 'Comio' Mantellini [mailto:[EMAIL PROTECTED] Sent: Thursday, June 05, 2008 2:53 AM To: U-Boot-Users Cc: Liew Tsi Chung Subject: Coldfire 547x, Linux and big memory. Hi List, Hi Tsi-Ching Liew, I'm using u-boot 1.3.2 (trunk) on my application in order to boot the freescale linux kernel for mcf547x cpus. My application has a lot of memory (256MB) and this causes difficulties to start the linux kernel. The Head.S code of the mcf547x Linux Kernel allows a one-to-one TLB map for the first 16MB of memory (mcf547x can use up to 1M for page). From this observation it is mandatory that U-BOOT should call the kernel allowing all structures (board descr., intrd, env and command line) onto the first 16M of physical RAM. The solutions can be: - to use the env variables bootm_low = 0 and bootm_size = 0x1000000 (16M) - modify the code of do_bootm function in order to limitate mem_size to 16M - Pray the Freescale to modify the kernel code in order to use a better and more flexible initialization code. I'm studying for smart modifications for Kernel and U-Boot (that hasn't guilt). Best regards, luigi -- ______ Luigi Mantellini .'______'. R&D - Software (.' '.) Industrie Dial Face S.p.A. ( :=----=: ) Via Canzo, 4 ('.______.') 20068 Peschiera Borromeo (MI), Italy '.______.' Tel.: +39 02 5167 2813 Fax: +39 02 5167 2459 Ind. Dial Face Email: [EMAIL PROTECTED] www.idf-hit.com GPG fingerprint: 3DD1 7B71 FBDF 6376 1B4A B003 175F E979 907E 1650 ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ U-Boot-Users mailing list U-Boot-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/u-boot-users