Actually , I really add --fdt in kernel command line arguments.
-- Best Regards, Jicheng Shi
If you have checked append dt, you need to do:
cat /path/to/device_tree.dtb >> arch/arm/boot/zImage
and use that as your kernel. Otherwise you need to pass the dt separately.
-Christoffer
On Fri, Sep 7, 2012 at 2:07 AM, shi roger <rogershijicheng@xxxxxxxxx> wrote:
I will describe the steps I have taken in detail here. If you find anything
may cause the problem, please tell me, as it still doesn't work after
modification.
1. Download kernel from https://github.com/virtualopensystems/linux-kvm-arm,
download device tree from git://linux-arm.org/arm-dts.git, download default
kernel config from
http://www.virtualopensystems.com/media/kvm-resources/host-config
2. Build cross compiler, set global PATH environment. ( As kernel passes
compilation, the cross compiler must be installed well.)
3. CROSS_COMPILE=arm-unknown-eabi- ARCH=arm make vexpress_defconfig.
CROSS_COMPILE=arm-unknown-eabi- ARCH=arm make menuconfig
CROSS_COMPILE=arm-unknown-eabi- ARCH=arm make uImage -j5
There's no error in this step
4. In previous step, I have checked CONFIG_ARCH_VEXPRESS_DT,
CONFIG_ARM_APPENDED_DTB, and CONFIG_ARM_ATAG_DTB_COMPAT were set to "y".
Build device tree file.
"./scripts/dtc/dtc -O dtb -o rtsm_ve-cortex_a15x1.dtb \
../arm-dts/fast_models/rtsm_ve-cortex_a15x1.dts"
5. Download bootloader from
git://github.com/virtualopensystems/boot-wrapper.git.
make clean; make;
-------------------------------------------------------------------------------------
Previous 5 steps are all about building components.
6. I deploy the host file system in the same machine which runs the
simulator.
Ip address is 10.131.250.61.
/etc/exports file:
/srv 10.0.0.0/255.0.0.0(rw,sync,no_root_squash,no_subtree_check,insecure)
I download base file system from
"http://releases.linaro.org/12.02/ubuntu/oneiric-images/alip/linaro-o-alip-tar-20120221-0.tar.gz".
Untar the package and copy the dir to /srv.
7. Prepare the params file, its content is shown bellow:
motherboard.smsc_91c111.enabled=1
motherboard.hostbridge.userNetworking=1
cluster.cpu0.semihosting-cmd_line="--kernel uImage --fdt
rtsm_ve-cortex_a15x1.dt b -- console=ttyAMA0 mem=512M
earlyprintk=serial,ttyAMA0 root=/dev/nfs nfsroot=10.131.250.61:/srv/ rw
ip=10.131.250.62::10.131.250.1:255.255.254.0:arm-kvm::off"
Because my host machine's net port is equipped with 5 ips, I assign
10.131.250.62 to fast model simulator.
--
Best Regards,
Jicheng Shi
On 2012-9-7, at 上午11:52, Christoffer Dall <c.dall@xxxxxxxxxxxxxxxxxxxxxx>
wrote:
Try running make vexpress_defconfig (you will need to enable the right
SMC network adapter to boot), but that should at last give you prints
early in the boot with earlyprintk.
Also, after you clone the device tree file, you need to create dtb
files, use this command in the kernel directory:
./scripts/dtc/dtc -O dtb -o /some/path/to/dtb
/some/path/to/source/from/git/repo
-Christoffer
On Thu, Sep 6, 2012 at 11:42 PM, shi roger <rogershijicheng@xxxxxxxxx>
wrote:
After adding earlyprintk, there's no any console output. Should I do some
specific config when I make menuconfig? My configure file is downloaded from
http://www.virtualopensystems.com/media/kvm-resources/host-config as the
guide told me. The same, I'm not sure whether I should modify device tree
file after clone it from git repository.
--
Best Regards,
Jicheng Shi
On 2012-9-7, at 上午12:00, Christoffer Dall <c.dall@xxxxxxxxxxxxxxxxxxxxxx>
wrote:
try adding earlyprintk to the kernel command line and see if you get
any console output.
if not, I would double-check the device tree file and the kernel config.
-Christoffer
On Thu, Sep 6, 2012 at 10:23 AM, shi roger <rogershijicheng@xxxxxxxxx>
wrote:
Hi, everyone.
I tried to install the latest kvm on arm on arm simulator. After following
the Development guide from http://systems.cs.columbia.edu/projects/kvm-arm/,
I stuck in the step named "Testing the host system".
When I started the simulator and telneted to localhost:5000, there's no
output from the serial port.
My Host: Debian6.0 x86_64
The simulator's output is listed bellow:
---------------------------
model_shell
~/ARM/FastModelsPortfolio_7.1/examples/RTSM_VE/Build_Cortex-A15x1/Linux-Debug-GCC-4.4/cadi_system_Linux-Debug-GCC-4.4.so
-f ./params boot-wrapper/linux-system-semi.axf
terminal_0: Listening for serial connection on port 5000
terminal_1: Listening for serial connection on port 5001
terminal_2: Listening for serial connection on port 5002
terminal_3: Listening for serial connection on port 5003
INFO: mmc: no image file connected
Simulation is started
[bootwrapper] Loaded kernel: uImage
[bootwrapper] WARNING: Ignoring uImage meta-data
[bootwrapper] Loaded FDT: rtsm_ve-cortex_a15x1.dtb
[bootwrapper] Kernel bootargs: console=ttyAMA0 mem=512M root=/dev/nfs
nfsroot=10.131.250.61:/srv/ rw
ip=10.131.250.62::10.131.250.1:255.255.254.0:arm-kvm::off
-----------------------------
BTW, the linux kernel is cloned from columbia repository, not virtual open
system. It would be nice if you have some idea to fix this problem. I'm glad
to receive your response. Thanks.
--
Best Regards,
Jicheng Shi
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