Thank you very much for your detailed answer. I have a fuloong mini box with "PMON 2.1 (Bonito) #7". Le command "set" at the "PMON>" prompt says 'Version = 1.2.125". I have downloaded the file ftp://debian.bjlx.org.cn/loongson2f/usb_loongson2f_v4.tar.bz2 and copied thee fils to an USB disk, according to the README file. So, at the "PMON>" prompt, I type "load /dev/fs/e...@usb0/boot/vmlinux" with the USB key inserted. I dont have found any file named "vmlinux-installer. The line "Entry address is 80205fb0" displays and the "PMON>" prompt show again. Then, after the command "g console=tty" , the system loads from the default /dev/hda1 partition. Then I have the gdm display manager, but the usb keyboard doesnt respond. Anyway, what I try to to is to launch the install process from the usb key, as described in the README file from usb_loongson2f_v4.tar.bz. Consequently, I type:
PMON> load /dev/fs/e...@usb0/boot/vmlinux PMON> g console=tty root=/dev/sda1 delay=7 Then, the system loads... and ends up in a kernel panic. The error messages are: VFS: Cannot open root device "sda1" or unknown-block (0,0) Please append a correct "root=" boot option; here are the available partitions: 0300 117220824 hda driver: ide-disk 0301 30724312 hda1 0302 30724312 hda2 0303 1020127 hda3 0304 54749520 hda4 Kernel panic - not syncind: VFS: Unable to mount root fs on unknown-block(0,0) BTW, the procedure consisting to untar the file ftp://bjlx.org.cn/loongson/loongson2_debian5_20081216.tar.bz2 on the /dev/hdaN partition, following the instructions in the README file from usb_loongson2f_v4.tar.bz are correct. Consequently, I have a working system then. But I tried to make the process more easiest for the members of our GNewSenseToMips project. Thank you again for your help Best regards Samy Quoting yanhua <[email protected]>: > Hiï¼ > The PMON is just a bootloader, you can load any kernel images through > it, a kernel with ramdisk(installer in it) can be loaded as normal > kernel, then a install > process start. > The pmon you currently use may differ from Fuloongn mini. Fuloong mini > have used a pmon supporting boot.cfg which likes grub, but yeeloong uses > only environment setting to load kernel. Later we will update the pmon > and make it support boot.cfg. > If you want to install a new system, you can load the kernel by hand. > Here are some commands available in pmon. > 1. To load a kernel in usb disk > load /dev/fs/e...@usb0/boot/vmlinux-installer > 2. using the kernel to boot and install(From now on, the install process > is like in fuloong mini) > g console=tty > > BTW, to come to pmon prompt, you press DEL key when booting > > below are some useful commands in pmon > h ## list all commands > h <cmd> ## give out <cmd> usage > > [email protected] åé: > > Hi, > > > > For our porting project of the gNewSense distribution on the Yeelong > laptop, we > > try to figure out some details about the pmon2000 boot firmware. > > > > First of all, we want to be sure that we can restore and reinstall the > system > > from an external media (such as an usb key or an external disk) before we > make > > the yeelong unusable because of our experiments. > > > > We have experimented initially the procedure on a Fuloong mini, and > instaled on > > it the latest loongson2 release > > (http://bjlx.org.cn/loongson/loongson2_debian5_20081216.tar.bz2). We want > to > > adapt later the procedure on the Yeelong if possible (we have no access to > this > > hardware yet, but we want to prepare the future work already). > > > > The /boot/boot.cfg file has a section "title usb" with which we should boot > from > > an usb media. We installed on an usb key the file > > http://bjlx.org.cn/loongson2f/usb_loongson2f_v4.tar.bz2. Unfortunately, the > > systems hangs with a kernel panic, after selecting the "usb" option from > the > > boot.cfg file. The pmon2000 version is 2.1 (Bonito). > > > > So, my question: could we boot from an usb device with PMON2000 > > Bonito 2.1. My guess is that there is a bug in that version and my hope is > that > > it has been possibly fixed in a newer PM2000 version. > > > > Thank you for your help > > > > Best regards > > > > Samy > > > > > > > > > > > > > > > > _______________________________________________ gNewSense-users mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/gnewsense-users
