Date: Tue, 17 Dec 2013 15:06:27 +0100
From:
martin.stein@...1...
To:
genode-main@lists.sourceforge.net
Subject: Re: A20-OLinuXino-MICRO-4GB
Hi Nick,
Nice to hear that you're intending to port base-hw to
A20-OLinuXino :-) Currently there are 3 Cortex-A9 boards
officially supported by base-hw: VEA9X4, PBXA9, and the
Pandaboard. You can refer to any of these boards. Looking
e.g. at PBXA9, you can see that basically the following
files must be implemented for your board:
base/mk/spec-platform_<BOARD>.mk
base/include/platform/<BOARD>/drivers/board_base.h
base-hw/mk/spec-hw_<BOARD>.mk
base-hw/src/core/<BOARD>/tlb.h
base-hw/src/core/<BOARD>/target.mk
base-hw/src/core/<BOARD>/timer.h
base-hw/src/core/<BOARD>/pic.h
base-hw/src/core/<BOARD>/platform_support.cc
base-hw/src/core/<BOARD>/cpu.h
To add support for your board in the builddir tool you
should add
hw_<BOARD>::
@echo "SPECS = genode hw_<BOARD>" >
$(BUILD_DIR)/etc/specs.conf
to tool/create_builddir and copy
tool/builddir/etc/build.conf.hw_pbxa9 to
tool/builddir/etc/build.conf.hw_<BOARD>.
Cortex-A9 brings its own core timer and interrupt
controller, so the only thing left is a UART driver.
Either one of the drivers in base/include/drivers/uart/
fit or you should implement your own at this place. To
install the driver afterwards you should create
base-hw/include/<UARTNAME>/drivers/serial_log.h (for
instance PBXA9 uses
base-hw/include/pl011/drivers/serial_log.h) and add
UARTNAME to SPECS in your
base/mk/spec-platform_<BOARD>.mk. After that
Genode::printf should print to the UART.
Assuming that the Cortex-A9 / ARMv7 revision of your board
and the board you used as reference do not differ, you
should be able to run a first scenario after this. If you
have further questions do not hesitate to ask ;-)
Greetings,
Martin
On 17.12.2013 14:19, buzz heavyyear wrote:
Hi
I have just received a new board with a dual core
cortex a7, the A20-OLinuXino, which I'd like to set up
and add to the genode tree - currently more pressing
than the RPi!
I'm no Arm expert, but I'm assuming that I can take
most of the existing arm_v7 and a9 code in base-hw and
just use this for setting up an a20olinuxino
environment and building an image?
Cheers
Nick
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IT organizations don't have a clear picture of how
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& PHP application. Start your 15-day FREE TRIAL of
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