With the BIC, the easiest way to run everything is to create two pty's
for each SoC and reserve stdin/stdout for the monitor:
wget https://github.com/facebook/openbmc/releases/download/openbmc-e2294ff5d31d/fby35.mtd
wget https://github.com/peterdelevoryas/OpenBIC/releases/download/oby35-cl-2022.13.01/Y35BCL.elf
qemu-system-arm -machine fby35 \
-drive file=fby35.mtd,format=raw,if=mtd \
-device loader,file=fby35.mtd,addr=0,cpu-num=0 \
-serial pty -serial pty -serial mon:stdio -display none -S
screen /dev/ttys0
screen /dev/ttys1
(qemu) c
This commit only adds the the first server board's Bridge IC, but in the
future we'll try to include the other three server board Bridge IC's
too.
Signed-off-by: Peter Delevoryas <peter@pjd.dev>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20220705191400.41632-9-peter@pjd.dev>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
The BMC boots from the first flash device by fetching instructions
from the flash contents. Add an alias region on 0x0 for this
purpose. There are currently performance issues with this method (TBs
being flushed too often), so as a faster alternative, install the
flash contents as a ROM in the BMC memory space.
See commit 1a15311a12 ("hw/arm/aspeed: add a 'execute-in-place'
property to boot directly from CE0")
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Peter Delevoryas <peter@pjd.dev>
[ clg: blk_pread() fixes ]
Message-Id: <20220705191400.41632-8-peter@pjd.dev>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
You can test booting the BMC with both '-device loader' and '-drive
file'. This is necessary because of how the fb-openbmc boot sequence
works (jump to 0x20000000 after U-Boot SPL).
wget https://github.com/facebook/openbmc/releases/download/openbmc-e2294ff5d31d/fby35.mtd
qemu-system-arm -machine fby35 -nographic \
-device loader,file=fby35.mtd,addr=0,cpu-num=0 -drive file=fby35.mtd,format=raw,if=mtd
Signed-off-by: Peter Delevoryas <peter@pjd.dev>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20220705191400.41632-7-peter@pjd.dev>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
