>From the CnMbook site, flashing a kernel is Fn+Shift+F1, not Fn+Shift+Ctrl. >http://194.150.201.35/cnmlifestyle/cnmbook/CnMNB7BEfirmware.htm Strange. I've always booted from SD with a 2.6-kernel with Fn+Shift+Ctrl without any problems.
> From: h...@goldelico.com > Date: Mon, 23 Aug 2010 17:19:13 +0200 > To: mipsbook-devel@linuxtogo.org > Subject: [Mipsbook-devel] Kernel 2.6 damages Kernel 2.4 in NAND? - was: Need > to recover, which image to use > > > Am 23.08.2010 um 17:00 schrieb Dr. H. Nikolaus Schaller: > > > > > Am 22.08.2010 um 00:54 schrieb Andy Valencia: > > > >> -------- > >> Ok... I can boot from that SD card, but not, apparently, any other way any > >> more. But I typed fast and killed the init script before it shot down the > >> system, so now I appear to have a 2.6 kernel running on what is apparently > >> the 2.4 filesystem. > >> > >> The instructions say to bring up eth0 (done, works) and run "./postinst". > >> There's no such file. Is there something subtly wrong, which is why I've > >> booted up with the new kernel and an old root filesystem? > > > > Hi Andy, > > did you install our Debian Lenny rootfs including the config.tgz > > on the second partition? The latter provides the postinst file. > > > > Then, the 2.6 kernel and Debian should log in as root and > > change the home directory to /root. There should be the postinst > > file that completes the Lenny bootstrapping. > > > > In the meantime, I have tried to pull the original files from > > /dev/mtd* on another machine - and now it can't start the > > old 2.4 system. > > > > Therefore: we have a problem in our 2.6-kernel that appears > > to (slightly?) damage the NAND flash contents even if the > > mtd devices are NOT mounted. > > > > I hope that I can build the JTAG adapter next week so that we > > will have progress with direct access to the flash and console. > > > > Nikolaus > > Once again I have damaged one of the Mipsbooks by booting the 2.6 > kernel from SD card. > > The device *did* boot into the Skytone system before I inserted the SD > card, powered down, and powered on while pressing Shift+Fn+Ctrl. > > After that, the 2.6 kernel booted fine into Debian and I copied the /dev/mtd > partitions (without mounting). After that, I did shut down, unplug the SD > card with Debian and rebooted back to Skytone from internal NAND. > Well, tried to reboot but it did not boot at all. > > Fortunately, this unit has a RS232 connector in the battery compartment > so I could now trace the U-Boot messages: > > > > NAND SPL > > Starting U-Boot ... > > > U-Boot 1.1.6 (Jun 24 2008 - 18:57:34) > > Board: Ingenic PMP Ver 1.x (CPU Speed 335 MHz) > DRAM: 64 MB > Flash: 0 kB > NAND:1024 MiB > *** Warning - bad CRC or NAND, using default environment > > In: serial > Out: serial > Err: serial > Net: JZ ETHERNET > ### main_loop: bootcmd="nboot 0x80600000 0 0x100000;bootm" > Hit any key to stop autoboot: 0 > > Loading from NAND 1GiB 3,3V 8-bit, offset 0x100000 > Image Name: Linux-2.6.24.3-g4f2821eb-dirty > Image Type: MIPS Linux Kernel Image (gzip compressed) > Data Size: 2225876 Bytes = 2.1 MB > Load Address: 80010000 > Entry Point: 803c1960 > ## Booting image at 80600000 ... > Image Name: Linux-2.6.24.3-g4f2821eb-dirty > Image Type: MIPS Linux Kernel Image (gzip compressed) > Data Size: 2225876 Bytes = 2.1 MB > Load Address: 80010000 > Entry Point: 803c1960 > Verifying Checksum ... Bad Data CRC > ### boot the second kernel in nand flash offset 0x200000 ...... > > Loading from NAND 1GiB 3,3V 8-bit, offset 0x280000 > > ** Bad Magic Number 0xffffffff ** > ## Booting image at 80600000 ... > Bad Magic Number > ### boot the second kernel in nand flash offset 0x200000 ...... > > Loading from NAND 1GiB 3,3V 8-bit, offset 0x280000 > > > > The interesting thing is that it reports to find a Linux-2.6.24.3 image!!! > > Maybe, we have either a bug in our descriptions or did not > correctly understand the U-Boot code for handling the modifier > keys? > > It appears that booting with Fn+Ctrl+Shift installs the new > kernel in NAND as a side-effect. > > > Nikolaus > > _______________________________________________ > Mipsbook-devel mailing list > Mipsbook-devel@linuxtogo.org > http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/mipsbook-devel
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