From mboxrd@z Thu Jan 1 00:00:00 1970 From: Detlev Zundel Date: Fri, 17 Jan 2014 17:17:00 +0100 Subject: [U-Boot] booting os 'Unknown OS' (1) is not supported In-Reply-To: (Alexander Khryukin's message of "Fri, 17 Jan 2014 19:42:41 +0400") References: 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 Hi Alexander, > Also if flashed 3.12_zImage (same kernel, same sources, just zImage) Ok, zImage doesn't have the uImage header, so we will not see any information nor will U-Boot be able to verify a checksum there. > reading kernel..device 0 Start 1063, Count 16384 > MMC read: dev # 0, block # 1063, count 16384 ... 16384 blocks read: OK > completed > reading RFS..device 0 Count 17447, Start 2048 > MMC read: dev # 0, block # 17447, count 2048 ... 2048 blocks read: OK > completed > Boot with zImage > Wrong Ramdisk Image Format Note that you also have a problem with your ramdisk, even if the kernel starts, it will likely not do much if it needs the ramdisk. > Starting kernel ... > > > And it's stucked at "Starting kernel ..." Let's say "we don't see anything after Starting kernel ....". This is also a common case when the kernel cannot open an initial console. It may well be that the kernel runs but without a console you will see nothing. To diagnose this you'd need to be sure that "bootargs" is setup properly before booting the kernel. Let's step back a bit. Do you have a kernel and ramdisk and kernel command line that works on your board? I.e. do we have a "working case" that we can retreat to for further tests? Also is U-Boot and the kernel mainline? Cheers Detlev -- The management question ... is not _whether_ to build a pilot system and throw it away. You _will_ do that. The only question is whether to plan in advance to build a throwaway, or to promise to deliver the throwaway to customers. - Fred Brooks, "The Mythical Man Month" -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: dzu at denx.de