1Brutus is an evaluation platform for the SA1100 manufactured by Intel. 2For more details, see: 3 4http://developer.intel.com/design/strong/applnots/sa1100lx/getstart.htm 5 6To compile for Brutus, you must issue the following commands: 7 8 make brutus_config 9 make config 10 [accept all the defaults] 11 make zImage 12 13The resulting kernel will end up in linux/arch/arm/boot/zImage. This file 14must be loaded at 0xc0008000 in Brutus's memory and execution started at 150xc0008000 as well with the value of registers r0 = 0 and r1 = 16 upon 16entry. 17 18But prior to execute the kernel, a ramdisk image must also be loaded in 19memory. Use memory address 0xd8000000 for this. Note that the file 20containing the (compressed) ramdisk image must not exceed 4 MB. 21 22Typically, you'll need angelboot to load the kernel. 23The following angelboot.opt file should be used: 24 25----- begin angelboot.opt ----- 26base 0xc0008000 27entry 0xc0008000 28r0 0x00000000 29r1 0x00000010 30device /dev/ttyS0 31options "9600 8N1" 32baud 115200 33otherfile ramdisk_img.gz 34otherbase 0xd8000000 35----- end angelboot.opt ----- 36 37Then load the kernel and ramdisk with: 38 39 angelboot -f angelboot.opt zImage 40 41The first Brutus serial port (assumed to be linked to /dev/ttyS0 on your 42host PC) is used by angel to load the kernel and ramdisk image. The serial 43console is provided through the second Brutus serial port. To access it, 44you may use minicom configured with /dev/ttyS1, 9600 baud, 8N1, no flow 45control. 46 47Currently supported: 48 - RS232 serial ports 49 - audio output 50 - LCD screen 51 - keyboard 52 53The actual Brutus support may not be complete without extra patches. 54If such patches exist, they should be found from 55ftp.netwinder.org/users/n/nico. 56 57A full PCMCIA support is still missing, although it's possible to hack 58some drivers in order to drive already inserted cards at boot time with 59little modifications. 60 61Any contribution is welcome. 62 63Please send patches to nico@fluxnic.net 64 65Have Fun ! 66 67