67 lines
1.8 KiB
Plaintext
67 lines
1.8 KiB
Plaintext
|
Brutus is an evaluation platform for the SA1100 manufactured by Intel.
|
||
|
|
For more details, see:
|
||
|
|
|
||
|
|
http://developer.intel.com
|
||
|
|
|
||
|
|
To compile for Brutus, you must issue the following commands:
|
||
|
|
|
||
|
|
make brutus_config
|
||
|
|
make config
|
||
|
|
[accept all the defaults]
|
||
|
|
make zImage
|
||
|
|
|
||
|
|
The resulting kernel will end up in linux/arch/arm/boot/zImage. This file
|
||
|
|
must be loaded at 0xc0008000 in Brutus's memory and execution started at
|
||
|
|
0xc0008000 as well with the value of registers r0 = 0 and r1 = 16 upon
|
||
|
|
entry.
|
||
|
|
|
||
|
|
But prior to execute the kernel, a ramdisk image must also be loaded in
|
||
|
|
memory. Use memory address 0xd8000000 for this. Note that the file
|
||
|
|
containing the (compressed) ramdisk image must not exceed 4 MB.
|
||
|
|
|
||
|
|
Typically, you'll need angelboot to load the kernel.
|
||
|
|
The following angelboot.opt file should be used:
|
||
|
|
|
||
|
|
----- begin angelboot.opt -----
|
||
|
|
base 0xc0008000
|
||
|
|
entry 0xc0008000
|
||
|
|
r0 0x00000000
|
||
|
|
r1 0x00000010
|
||
|
|
device /dev/ttyS0
|
||
|
|
options "9600 8N1"
|
||
|
|
baud 115200
|
||
|
|
otherfile ramdisk_img.gz
|
||
|
|
otherbase 0xd8000000
|
||
|
|
----- end angelboot.opt -----
|
||
|
|
|
||
|
|
Then load the kernel and ramdisk with:
|
||
|
|
|
||
|
|
angelboot -f angelboot.opt zImage
|
||
|
|
|
||
|
|
The first Brutus serial port (assumed to be linked to /dev/ttyS0 on your
|
||
|
|
host PC) is used by angel to load the kernel and ramdisk image. The serial
|
||
|
|
console is provided through the second Brutus serial port. To access it,
|
||
|
|
you may use minicom configured with /dev/ttyS1, 9600 baud, 8N1, no flow
|
||
|
|
control.
|
||
|
|
|
||
|
|
Currently supported:
|
||
|
|
- RS232 serial ports
|
||
|
|
- audio output
|
||
|
|
- LCD screen
|
||
|
|
- keyboard
|
||
|
|
|
||
|
|
The actual Brutus support may not be complete without extra patches.
|
||
|
|
If such patches exist, they should be found from
|
||
|
|
ftp.netwinder.org/users/n/nico.
|
||
|
|
|
||
|
|
A full PCMCIA support is still missing, although it's possible to hack
|
||
|
|
some drivers in order to drive already inserted cards at boot time with
|
||
|
|
little modifications.
|
||
|
|
|
||
|
|
Any contribution is welcome.
|
||
|
|
|
||
|
|
Please send patches to nico@fluxnic.net
|
||
|
|
|
||
|
|
Have Fun !
|
||
|
|
|