You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
55 lines
1.9 KiB
55 lines
1.9 KiB
|
|
Q: How do I boot Linux on an RS/6000 (OpenFirmware)
|
|
|
|
Build the kernel with "make zImage" and use "arch/ppc/boot/images/
|
|
zImage.chrp-rs6k" as kernel image for booting your RS/6000.
|
|
|
|
If you are running your RS/6000 on a serial console, remember to set your
|
|
terminal program to 9600 Bps (8N1). Read Documentation/serial-console.txt
|
|
for the linux kernel sources for details on how to let the kernel use a
|
|
serial console.
|
|
|
|
Enter the OpenFirmware (can be done by pressing 'F8' on startup when using
|
|
the VGA console or just '8' on a serial console). The RS/6000 BIOS calls the
|
|
OpenFirmware prompt the "OK Prompt". Put the kernel image on a floppy with
|
|
MS-DOS FAT filesystem. Use a filename like "zimage" without extension. The
|
|
RS/6000 OpenFirmware doesn't know about long file names on a DOS floppy. Boot
|
|
the kernel with:
|
|
|
|
boot floppy:,<filename> <kernel-options>
|
|
|
|
e.g.:
|
|
|
|
0 > boot floppy:,zimage root=/dev/discs/disc1/part3
|
|
|
|
Note that 'floppy' is a device-alias.
|
|
|
|
Other useful commands:
|
|
|
|
printenv shows the current contents of the variables
|
|
dev / ls shows the device tree
|
|
devalias shows the device aliases and the OpenFirmware pathnames
|
|
|
|
setenv variable value set the content of the variable
|
|
reset-all restart the machine
|
|
shut-down power off the machine
|
|
|
|
If you want to permanently boot a linux kernel from the OpenFirmware, create
|
|
a small partition of the 'PPC PReP Boot' (Id 41) partition type for it and
|
|
write the kernel image directly to the partition block device:
|
|
|
|
# dd if=/mnt/zImage of=/dev/discs/disc0/part1
|
|
|
|
Now reboot to the OpenFirmware prompt (F8 again) and type:
|
|
|
|
0 > setenv boot-device disk:1
|
|
0 > setenv boot-file root=/dev/discs/disc0/part2
|
|
|
|
now you con boot with
|
|
|
|
0 > boot
|
|
|
|
and if you don't enter the OpenFirmware (F8) on further reboots this kernel
|
|
will automatically be loaded. If you need any other kernel parameters, just
|
|
append them to the 'setenv boot-file ..' line.
|
|
|