On 04/09/15 02:09, Joerg Wiegand wrote:
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1On platforms with a bootloader that lets you select a kernel, typically drop in as a new name and select it at boot time. In your case you may have to rename awy the old kernel and put it in as /netbsd.Hmmmm .... there in no /netbsd on the system now. There are 2 kernels under /boot, kernel.img & kernel7.img (straight off of rpi.gzimg file I downloaded a few days ago, no mods by me) .... I also don't have a monitor hooked up now, did when it was back in my work room, so I can't choose a kernel if I wanted to :-/ ....Hi, here is how I do it: save the old kernel: cp /boot/kernel.img /boot/kernel.img.old then download the file netbsd-RPI.bin.gz, unzip it and move the file to /boot/kernel.img . The other, somewhat bigger file netbsd-RPI.gz contains the kernel in another format that can be converted to Raspberry's this way (as far as I remember): objcopy -S -O binary netbsd kernel.img This produces the file in netbsd-RPI.bin.gz. The modules will unpack in an own directory for each kernel version, so don't mind about that, no need for backups here. If the new kernel doesn't work, you can still cp and mv the kernels in the boot-partition with any other system, so there should be little risk. But unfortunately I don't see any way to choose between different kernels at boot time. Hope this helps, Joerg Wiegand -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQEcBAEBAgAGBQJVJiWUAAoJENQZzfWzYhr44jkH/3wwZVdW2uhhe9P0GfVRjZjJ UPqU6jFKS8wlpOSnFO6jfGEqk03VTpV22svtX/fnG735NBlhTwC9UyKZwUAkAiTV j9l6MA2qa6qTHkGe7D6lgJ3pBsP0D3YnaJR01C2RlDRaq3a66fQQxDtA0LLdhAuR /ukqjeXc5nP/juGAUNj2ai2bKzbap80+hKL9Mc8MxHhBuKpyBOKYvuqAORYZ0+Mr al06AXKseBU50kYQuVUG//m7YCLEaQqlmjM450smvRuW6hAeXGduCyZWN6fCMgQa rw8QE2VvfrZrrk6Vl2uyp78Tn8ZE2COicMyn3yhi6nr1f2LGcsCJGEKbgmEuNdM= =9Yuk -----END PGP SIGNATURE-----
Thanks for your reply, it clears up much, especially on the 2 different available kernel images (.bin.gz & .gz). The only lingering problem is which of the 2 kernels in /boot is actually booted. The boot code seems to be binary (This was/is NetBSD-7 rpi.gzimg from a few days ago), & I don't know how to tell what was booted, see below:
rpi # grep kernel /var/log/messages rpi # grep boot /var/log/messages Mar 27 23:55:59 rpi /netbsd: boot device: ld0 Mar 28 04:44:56 rpi /netbsd: unmounted /dev/ld0e on /boot type msdos Mar 28 04:44:56 rpi /netbsd: Please press any key to reboot. Mar 28 04:44:56 rpi /netbsd: rebooting... Mar 28 04:44:56 rpi /netbsd: boot device: ld0 Mar 28 07:02:02 rpi /netbsd: unmounted /dev/ld0e on /boot type msdos Mar 28 07:02:02 rpi /netbsd: rebooting... Mar 28 07:02:03 rpi /netbsd: boot device: ld0 Mar 28 07:02:03 rpi /netbsd: unmounted /dev/ld0e on /boot type msdos Mar 28 07:02:03 rpi /netbsd: rebooting... Mar 28 07:02:03 rpi /netbsd: boot device: ld0 Apr 8 00:05:34 rpi /netbsd: boot device: ld0 Apr 8 22:15:14 rpi /netbsd: boot device: ld0 rpi # uname -a NetBSD rpi 7.0_BETA NetBSD 7.0_BETA (RPI.201503272230Z) evbarm rpi # lltr /boot/ total 14313 1 16 drwxr-xr-x 1 root wheel 16384 Dec 31 1979 ./ 1826 544 -rwxr-xr-x 1 root wheel 555896 Mar 27 19:01 start_cd.elf* 1824 2592 -rwxr-xr-x 1 root wheel 2651576 Mar 27 19:01 start.elf* 1813 5584 -rwxr-xr-x 1 root wheel 5715712 Mar 27 19:01 kernel7.img* 1811 5532 -rwxr-xr-x 1 root wheel 5661248 Mar 27 19:01 kernel.img* 1822 4 -rwxr-xr-x 1 root wheel 2357 Mar 27 19:01 fixup_cd.dat* 1820 8 -rwxr-xr-x 1 root wheel 6148 Mar 27 19:01 fixup.dat* 1818 20 -rwxr-xr-x 1 root wheel 17856 Mar 27 19:01 bootcode.bin* 1816 4 -rwxr-xr-x 1 root wheel 1447 Mar 27 19:01 LICENCE.broadcom* 2 1 drwxr-xr-x 21 root wheel 512 Mar 28 01:30 ../ 1829 4 -rwxr-xr-x 1 root wheel 116 Mar 28 01:57 cmdline.orig.txt* 1809 4 -rwxr-xr-x 1 root wheel 116 Mar 28 02:15 cmdline.txt* rpi # cat /boot/cmdline.txt root=ld0a console=fb #fb=1280x1024 # to select a mode, otherwise try EDID #fb=disable # to disable fb completely rpi # file /boot/bootcode.bin /boot/bootcode.bin: data rpi #I also wasn't clear that you could copy/mv the kernel file once it had booted, but you apparently can, no ? TIA & thanks again :-) ....
--
William A. Mahaffey III
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