diff options
Diffstat (limited to 'distrib/notes/loongson/install')
| -rw-r--r-- | distrib/notes/loongson/install | 56 |
1 files changed, 38 insertions, 18 deletions
diff --git a/distrib/notes/loongson/install b/distrib/notes/loongson/install index 290f50821e6..c7e8dbd024c 100644 --- a/distrib/notes/loongson/install +++ b/distrib/notes/loongson/install @@ -1,4 +1,4 @@ -dnl $OpenBSD: install,v 1.5 2010/02/12 21:33:29 otto Exp $ +dnl $OpenBSD: install,v 1.6 2010/02/16 22:17:35 miod Exp $ OpenBSDInstallPrelude Booting the installation media: @@ -70,27 +70,29 @@ dnl OpenBSDInstallWrapup As the OpenBSD/MACHINE port is very new, there is not yet a proper - bootloader. In addition to these steps, you will need, for the time - being, to copy the kernel image to the Linux partition and boot - from it. This annoyance is being worked on and should disappear - very soon. + bootloader installation. In addition to these steps, you will need, + for the time being, to copy either a bootblock or the kernel image + itself to the Linux partition and boot from it. This annoyance is + being worked on and should disappear very soon. Lemote systems final steps: Lemote systems ship with a boot menu. After the installation - is complete, you should add an OpenBSD entry to the boot menu - to be able to boot OpenBSD more easily. + is complete, you should copy the OpenBSD/MACHINE bootloader + to a PMON bootable location, and add an OpenBSD entry to the + boot menu to be able to boot OpenBSD more easily. The boot menu contents are found in /boot/boot.cfg on the Linux partition. To add an OpenBSD entry, simply add a new entry in the file, such as: title OpenBSD - kernel /dev/fs/ext2@wd0/boot/bsd + kernel /dev/fs/ext2@wd0/boot/boot args "" - In the example above, /dev/fs/ext2@wd0/boot/bsd is the PMON - path to the kernel image. + In the example above, /dev/fs/ext2@wd0/boot/boot is the PMON + path to the OpenBSD bootloader, which can be found in + /usr/mdec on the installed system. You may make OpenBSD the default option by changing the ``default'' line near the top of the file. The value on this @@ -103,16 +105,33 @@ OpenBSDInstallWrapup The timeout until the default choice is selected, in seconds, can be modified on the ``timeout'' line. - Note that using the boot menu currently disables root device - discovery and kernel symbol loading. Therefore it may be - more convenient to switch to the PMON prompt using 'c' and - boot with the command + However, due to side effects of PMON operation, automatic + loading of OpenBSD binaries (bootloader or kernel) causes + a register dump to be silently displayed by PMON; while + it won't be visible on screen, PMON will gladly wait for + user input to continue if it believes it has written too + much output. - PMON> boot -k $bsd + To overcome this annoyance, simply change the `moresz' + environment variable to a large value (30 or larger will + do): - after having set the bsd variable to your boot path: + PMON> set moresz 30 - PMON> set bsd /dev/fs/ext2@wd0/boot/bsd + If you do not want to use the boot menu, you may simply + disable it in the environment, and set the `al' variable + to point to the bootloader path: + + PMON> set ShowBootMenu no + PMON> set al /dev/fs/ext2@wd0/boot/boot + + The bootloader will attempt to load the kernel file set in + the `bsd' environment variable. Should this fail, it will + wait for user commands. The value of `bsd' should be a + path within the OpenBSD root filesystem on the disk, such + as: + + PMON> set bsd /bsd On the Fuloong 2F, getting PMON to use the serial console is tricky, due to PMON bugs and design decisions made by @@ -141,7 +160,8 @@ OpenBSDInstallWrapup Gdium systems final steps: Gdium systems do not have a boot menu, and directly boot the - system (Linux, by default). + system (Linux, by default). Unfortunately, the OpenBSD + bootloader does not work on this machine. The path to the file booted by default is set in the `al' environment variable. To boot the bsd kernel on the G-Key |