FreeBSD
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== Next steps == | == Next steps == | ||
Implement console driver over uart. | Implement console driver over uart. | ||
+ | |||
+ | == Using a Kernel Testimage == | ||
+ | Another method of getting the kernel into the neo is to use an image for the emulated sd card. | ||
+ | I already have a file called sd.img ( dd'ed from a 32mb usb stick). | ||
+ | cp /usr/obj/arm/usr/src/sys/NEO1973/kernel . | ||
+ | /usr/obj/arm/usr/src/tmp/usr/bin/objcopy -O binary kernel | ||
+ | sudo mdconfig -a -t vnode -f sd.img | ||
+ | sudo mount_msdosfs /dev/md0s1 /mnt/tmp | ||
+ | sudo cp kernel /mnt/tmp/ | ||
+ | sudo umount /mnt/tmp | ||
+ | sudo mdconfig -d -u 0 | ||
+ | arm-softmmu/qemu-system-arm -M neo -m 130 -mtdblock openmoko/openmoko-flash.image -kernel openmoko/openmoko-kernel.bin -sd sd.img -usb -show-cursor -serial telnet:localhost:1200,server | ||
+ | In another terminal: | ||
+ | telnet localhost 1200 | ||
+ | mmcinit | ||
+ | fatload mmc 0 0x30008000 kernel | ||
+ | go 0x30008000 | ||
+ | And wait for the crash :) |
Revision as of 23:27, 27 September 2007
Interested in using FreeBSD on the Neo1973 or as a Host OS? Get in touch with mn -at- bsdgroup.de and andrew -at- fubar.geek.nz, they are currently exploring what to do about this.
Contents |
Running FreeBSD in Qemu-neo1973
A FreeBSD port is only ready for kernel developers.
Required tools
You will need mkimage from u-boot. It's available in Ports under devel/u-boot.
You will also need Qemu-neo1973. Hints on building it are avaliable from this page.
Building FreeBSD
You will need to download http://fubar.geek.nz/files/freebsd/neo1973/neo1973-0.20070917.tar.bz2 and extract it over the FreeBSD src tree.
From the FreeBSD src tree run:
make buildworld TARGET=arm TARGET_ARCH=arm TARGET_CPUTYPE=arm920t
make buildkernel TARGET=arm TARGET_ARCH=arm TARGET_CPUTYPE=arm920t KERNCONF=NEO1973
gzip -9 usr/obj/path/to/kernel
/path/to/mkimage -A arm -O freebsd -T kernel -C gzip -a 30008000 -e 30008000 -n "Kernel Image" -d /usr/obj/path/to/kernel.gz /usr/obj/same/path/kernel.boot
You will now have a copy of FreeBSD that is able to be loaded by u-boot.
Running FreeBSD
From the qemu directory edit the openmoko/flash.sh and add the line
kernel_image="/usr/obj/path/to/kernel.boot"
after the four "most_recent" lines.
Next run
./openmoko/download.sh
./openmoko/flash.sh
This will fetch the required parts and create an image to run. They require you to have bash installed.
Finally run qemu with
arm-softmmu/qemu-system-arm -M neo -m 130 -mtdblock openmoko/openmoko-flash.image -kernel openmoko/openmoko-kernel.bin -usb -show-cursor
It will display "Kernel loading..." with no further messages.
You can append
-serial telnet:localhost:1200,server
to the qemu startup line to start a telnet server which represents the serial console, just
telnet localhost 1200
and qemu will go on with the startup process.
Useful pages
Next steps
Implement console driver over uart.
Using a Kernel Testimage
Another method of getting the kernel into the neo is to use an image for the emulated sd card. I already have a file called sd.img ( dd'ed from a 32mb usb stick).
cp /usr/obj/arm/usr/src/sys/NEO1973/kernel . /usr/obj/arm/usr/src/tmp/usr/bin/objcopy -O binary kernel sudo mdconfig -a -t vnode -f sd.img sudo mount_msdosfs /dev/md0s1 /mnt/tmp sudo cp kernel /mnt/tmp/ sudo umount /mnt/tmp sudo mdconfig -d -u 0 arm-softmmu/qemu-system-arm -M neo -m 130 -mtdblock openmoko/openmoko-flash.image -kernel openmoko/openmoko-kernel.bin -sd sd.img -usb -show-cursor -serial telnet:localhost:1200,server
In another terminal:
telnet localhost 1200 mmcinit fatload mmc 0 0x30008000 kernel go 0x30008000
And wait for the crash :)