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1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
67 lines
1.9 KiB
Plaintext
67 lines
1.9 KiB
Plaintext
Brutus is an evaluation platform for the SA1100 manufactured by Intel.
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For more details, see:
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http://developer.intel.com/design/strong/applnots/sa1100lx/getstart.htm
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To compile for Brutus, you must issue the following commands:
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make brutus_config
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make config
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[accept all the defaults]
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make zImage
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The resulting kernel will end up in linux/arch/arm/boot/zImage. This file
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must be loaded at 0xc0008000 in Brutus's memory and execution started at
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0xc0008000 as well with the value of registers r0 = 0 and r1 = 16 upon
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entry.
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But prior to execute the kernel, a ramdisk image must also be loaded in
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memory. Use memory address 0xd8000000 for this. Note that the file
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containing the (compressed) ramdisk image must not exceed 4 MB.
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Typically, you'll need angelboot to load the kernel.
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The following angelboot.opt file should be used:
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----- begin angelboot.opt -----
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base 0xc0008000
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entry 0xc0008000
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r0 0x00000000
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r1 0x00000010
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device /dev/ttyS0
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options "9600 8N1"
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baud 115200
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otherfile ramdisk_img.gz
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otherbase 0xd8000000
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----- end angelboot.opt -----
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Then load the kernel and ramdisk with:
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angelboot -f angelboot.opt zImage
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The first Brutus serial port (assumed to be linked to /dev/ttyS0 on your
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host PC) is used by angel to load the kernel and ramdisk image. The serial
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console is provided through the second Brutus serial port. To access it,
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you may use minicom configured with /dev/ttyS1, 9600 baud, 8N1, no flow
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control.
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Currently supported:
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- RS232 serial ports
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- audio output
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- LCD screen
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- keyboard
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The actual Brutus support may not be complete without extra patches.
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If such patches exist, they should be found from
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ftp.netwinder.org/users/n/nico.
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A full PCMCIA support is still missing, although it's possible to hack
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some drivers in order to drive already inserted cards at boot time with
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little modifications.
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Any contribution is welcome.
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Please send patches to nico@cam.org
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Have Fun !
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