(Attached)
--
Loïc Minier
--- Begin Message ---
On Thu, Jul 07, 2011, Loïc Minier wrote:
> I just tried creating an image manually myself minutes ago after
> building barebox for beagle and beagle_xload, but failed miserably, I'm
> not sure why yet; I just get "qemu: hardware error: no boot device
> found". I will dig into this, as I need this for the UEFI research
> too.
Ok; QEMU seems to be picky about the FAT for some reason; will dig into
this later, but here is how I got some of it working (and then breaking
badly):
* Create blank SD card (sparse) image, sufficiently big to allow FAT32 parts
(here: 256 MiB)
{{{
% dd if=/dev/zero of=sd.img bs=1M seek=256 count=0
}}}
* Partition with a bootable FAT32 partition starting at +63s
{{{
% parted sd.img
(parted) unit s
(parted) mklabel msdos
(parted) mkpartfs primary fat32 63 -1
(parted) toggle 1 boot
(parted) quit
% sudo mount -o loop,offset=$((63*512)) sd.img /mnt
% sudo cp barebox/obj-omap3530_beagle_xload/barebox.bin.ift /mnt/MLO
% sudo cp barebox/obj-omap3530_beagle/barebox.bin /mnt/barebox.bin
% sudo cp barebox/obj-omap3530_beagle/barebox.bin /mnt/barebox
% sudo umount /mnt
}}}
* Boot in QEMU
{{{
% qemu-system-arm -sd sd.img -nographic -M beagle
}}}
You should get:
{{{
barebox 2011.07.0-00043-gd757dd4 (Jul 7 2011 - 15:06:10)
Board: Texas Instrument's Beagle
NAND device: Manufacturer ID: 0x2c, Chip ID: 0xba ( )
Malloc space: 0x87bfff10 -> 0x87ffff10 (size 4 MB)
Stack space : 0x87bf7f10 -> 0x87bfff10 (size 32 kB)
unknown boot source. Fall back to nand
booting from NAND
qemu: fatal: Trying to execute code outside RAM or ROM at 0x402145f4
R00=40200000 R01=4020f800 R02=00000000 R03=00000030
R04=87c054b8 R05=87bfff10 R06=78500100 R07=ffffffff
R08=87bfff00 R09=ffffffff R10=00000000 R11=00000002
R12=40209ac4 R13=87bfff00 R14=4020f858 R15=402145f4
PSR=200001db --C- A und32
}}}
to debug, you can use Ubuntu's gdb-multiarch (which allows debugging
ARM binaries) and connecting to QEMU's gdb connection.
--
Loïc Minier
--- End Message ---
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