Zcu102 qemu. elf,cpu-num=4 -global xlnx,zynqmp.

Zcu102 qemu You can get the " zynqmp-qemu-arm. I want to use TTC counter but it is not available in QEMU emulated zcu102 machine. Boot on QEMU# The executable image is booted by Qemu in ELF format. bin into high and low portions for the Parallel Dual QSPI of the ZCU102, flash_strip_bw device tree can be found under arch/arm/dts/ with the name zynqmp-zcu102-rev1. these two files are present in images/linux directory. petalinux-create -t project -s xilinx-k26-starterkit-v2022. ZynqMP devices static void zcu102_modify_dtb(const struct arm_boot_info *binfo, void *fdt) ZCU102 hardware platform 2. QEMU (Quick EMUlator) is an open source, cross-platform, system emulator. PLATFORM=zynqmp-zcu104. /qemu-system-aarch64 -M xlnx-zcu102 -smp 4 -m 4G . 1. 1 and so I am using QEMU that is installed with Vitis. The path for these two files is mention on page 18. With PetaLinux, developers can have their Xilinx-based hardware booted and running within about 5 minutes after installation; ready for application, library and driver development. /testide. ZCU106. add the detailed log for 32-bit FSBL load ===== qemu-system-aarch64: -device loader,file=. img,id=stick. # Run QEMU. Supported boards; Boot Firmware; Build instructions; Petalinux build instructions; Booting the device; AOSP; Linux kernel TEE framework; OP-TEE gits; Toolchains; PLATFORM=zynqmp-zcu102. This board has 4 Cortex-A53 CPUs and 2 Cortex-R5F CPUs. export PLATFORM_REPO_PATHS = <path to the ZCU102 platform install dir> Options. How can I avoid this?-----Xilinx QEMU Jun 9 2016 13:58:40. Xilinx ZynqMP ZCU102 board: z2: Zipit Z2 (PXA27x) Tips. - Xilinx/qemu To get you up and running quickly in this part we will focus on booting a pre-built image of QEMU for Xilinx's ZCU102 Development Board up to the first Linux prompt. 4 to generate a Linux OS image for ZCU102 ultrascale\+. */ int main(int argc, char* argv[]){ SetUpPsUart0(); outString("Hello World on Xilinx's QEMU for ZCU102\n"); return(0); } Compile the bare metal example qemu-system-aarch64 \ -M arm-generic-fdt-7series \ Let's run your first bare metal application "Hello World" We will build and run a simple example that runs directly on the A53 out of the OCM memory of the Zynq Ultrascale+™ MPSoC. Start the OP-TEE Normal World service and run xtest: $ tee 创建petalinux的zcu102工程. /qemu-system-aarch64 -M xlnx-zcu102 -m 512m -monitor stdio -drive file=. To simultaneously debug both MicroBlaze and ARM machines in a multi-arch Extra Command-Line Options. 2 QEMU Prodecures The Alistair, what is the complete command line for bringing up U-boot with Xilinx QEMU on arm-generic-fdt-7series? I have been trying different variations of this - [meta-virtualization] [meta-xilinx] Booting ZCU102 SD image on QEMU Pello Heriz pello. Get Support QEMU emulates a small sub-network (or LAN if you will) containing a DHCP server, a gateway, and a DNS server; everything you need to access the internet. The physical machine monitor (PMM) which includes the virtio back-ends runs on PetaLinux and communicates with the Zephyr auxiliary runtime over shared memory. Device trees used by QEMU to describe the hardware - Xilinx/qemu-devicetrees Then make sure the following environment variables are correctly set to point to your installed ZCU102 platform, rootfs and sysroot directories respectively. The step that I have done is: petalinux-create -t project -s <xilinx zcu102 v2018. It also lists steps to install Vivado 2019. ld. Decompress and On more complex systems, such as the Zynq UltraScale+ MPSoC or Versal Adaptive SoC, the output of info qtree can be very long. Programming QSPI flash from U-Boot and verify the QSPI boot. These options are passed by the command line when starting QEMU. If using PetaLinux tools, these options can be passed in by using the --qemu-args "<options>" argument when booting your machine. The videos have been created using Vivado® Design Suite version 2019. We can use grep to find what file the object model name was defined Xilinx ZCU102. Note: The pmu_rom_qemu_sha3. Regardless of the exception level at boot, RTEMS will drop to EL1 for execution. If using a multi-architecture system, such as Zynq UltraScale+ MPSoC or Versal Adaptive SoC, arguments can be passed into the MicroBlaze QEMU machine by using Currently, the XSDB debugger does not support the Microblaze via QEMU. It is an executable that runs on an x86 Linux operating system. 2 bsp path> cd <target folder> petalinux-config. 1 and the Xilinx Software Development Kit (SDK). When doing co-simulation, the -machine-path, -sync-quantum, and -icount options are used to allow communication between QEMU and the SystemC/TLM2. 1 and the SDK and create a PS design to run Hello, World! on. bsp? Will the boot succeed on QEMU by following the steps below? $ petalinux-create -t project -s xilinx-zcu102-v2020. Boot on ZynqMP Hardware# On ZynqMP hardware, RTEMS can be started at EL1, EL2, or EL3 by u-boot or directly as part of BOOT. MVP Mark as New; Bookmark; Subscribe; Mute; Subscribe to RSS Feed; Permalink; Print; Report Inappropriate ZCU102 hardware platform 2. bsp -n TEST $ cd TEST $ petalinux-boot --qemu --prebuilt 3. Examples of machine-name: vck190-versal, zcu102-zynqmp, zcu702-zynqmp etc. Rebuild image: bitbake petalinux-image-minimal Xilinx's fork of Quick EMUlator (QEMU) with improved support and modelling for the Xilinx platforms. bin file to start Linux kernel after compilation ? Any help please ? --- Thanks IMAGE_CLASSES_remove = This example simply prints the line "Hello World on Xilinx's QEMU for ZCU102" and then it quits. 2. Note the If booting QEMU using PetaLinux, the primary machine will typically listen on localhost:9000. 3 and 2020. Also, you can read the ug1169 for more information on Qemu. 1. 1 Vivado SDK. Device trees used by QEMU to describe the hardware - Xilinx/qemu-devicetrees. Users, can use the GDB debugger. mondragon. Skip to content. bsp. This board configuration makes no claims about its suitability for use with an actual ZCU102 hardware system, or any other hardware system. Using Xilinx QEMU, you can stream real or simulated CAN and CAN FD (flexible data-rate) traffic from your host machine to your guest running inside QEMU seamlessly. bin. After compilation successfully, it generate for me all files separately (atf, u-boot, Image, fsbl ). 2 for embedded flows. These machines support runninng on QEMU: zcu102-zynqmp; ep108 Hi all, I have an environment is based on zcu102 BSP \\+ petalinux2018 and I try to play around with the example given in this link: cosim with QEMU Hello, I'm using Yocto 2. 1 Create Petalinux project. bsp? Will the boot succeed on QEMU by following the steps below? We will build and run a simple example that runs directly on the A53 out of the OCM memory of the Zynq Ultrascale+™ MPSoC. 0 module. You can pass additional arguments to QEMU using the qemu-args ". 2 Error: petalinux-boot --qemu --prebuilt 3 INFO: Set QEMU tftp to Hi, I was going to purchase the above course but if refers to using a ZCU104 board and not a ZCU102 that I have access to. - gerstl/petalinux-systemc-docker . 1 2021. finally i got the remote-port connection, but it seems that right afterwards it disconnects in time 0ns. elf on the RPU0: qemu-system-aarch64 -M xlnx-zcu102 -smp 6 -serial stdio -device loader,file=app. icount is an optional option used to create more deterministic behavior in QEMU, while machine-path and sync-quantum are required for co-simulation. I am also able to run an A64 based assembly on the Ultrascale\+ Cortex-A53 but I simply cannot get the Cortex-R5 working. Binaries like PMUFW, FSBL, U-Boot, ATF, Linux kernel, Device Tree and Rootfs are downloaded through DFU utility from Host. 2 QEMU Prodecures The Options. qemu-system-aarch64 -M xlnx-zcu102 -smp 6 -serial Breaking it down, the -drive argument is creating a QEMU storage drive for use by a device. bin -drive file=filesystem. This will be similar to below: root@xilinx-zcu102-2020_2:~# ifconfig eth0 Link encap:Ethernet HWaddr 00:0A:35:00:22:01 inet addr:10. The application runs perfectly well on the Zynq7000 Cortex-A9 QEMU. Xilinx's fork of Quick EMUlator (QEMU) with improved support and modelling for the Xilinx platforms. ' exit 1. This I am trying to launch standalone application on Petalinux Xilinx QEMU setup for zcu102 board using below command. 1 release). g. Should I convert it into a genuine Vitis IDE This is the command you want to run, as it will launch the QEMU environment to model the embedded processor of the zcu102 platform. change to qemu cmd: ctrl+alt+c $ drive_add 0 if=none,file=. The file=sata0. You will need 2 instances to run QEMU - arm instance and pmufw instance. The block diagrams provide a broad overview of what is supported in each hardware block in QEMU for ZynqMP zcu102¶ Instructions below show how to run OP-TEE using QEMU for ZynqMP zcu102 board. For finding the module, the only part we care about is the line that says dev:. Users can connect to the debugger using the target remote: <port> command Since the Microblaze is configured to use Little Endian (this is hard-coded in the Microblaze config), then we must tell the debugger this. img Emulated/Virtualized environment Operating system: OS/kernel version: Architecture: aarch64 Description of problem I have only recently started using qemu and am reading content related to ahci. dtb path. mk qemu QEMU will start and launch Petalinux distribution. For example, if booting a ZCU102 machine using PetaLinux, the ARM machine will listen on localhost:9000, while the Microblaze machine will not have remote debugging enabled. Versal Adaptive SoC devices support two CAN FDs: CANFD0 and CANFD1. /demo5/demo5 Enjoy! dev@openamp-demo:~$ Run the This blog provides a list of videos showcasing the tutorials in (UG1209). 4 Create pmu config file; 1. 1-zcu102-release package. These scripts are ran by the Vitis tools under the hood to allow SW EMU or HW EMU. I also tried Device trees used by QEMU to describe the hardware - Xilinx/qemu-devicetrees. 2 QEMU Prodecures The Configuring and building for zcu102 board Once the last command ends up you are ready to run QEMU tool or to make a bootable SD card. QEMU can emulate a full system (commonly referred to as the guest), such as a Xilinx ZCU102 or VCK190 board. 进入漫长的等待. QEMU simulation platform 1. I have seen other posts that mention multiple ethernet models by adding the appropriate &gem* entries into system-user. env: xilinx-zcu102-2022. Thanks Lab 2: QEMU: Bare-Metal Application Development and Debugging - software-only lab and doesn't require a board - no impact. By default the qemu built that is in the images recipe-sysroot/usr/bin/ is the mainline qemu, but you want the qemu-xilinx one. 15 Bcast:10. 2 meta-xilinx and open-embedded support running MicroBlaze, Zynq-7000 and ZynqMP machines on mainline QEMU. The format=raw argument tells QEMU that the file we pass is a raw file and the file contents are to be the disk contents "as-is". ZCU104. qemu的使用说明. "sbsa-ref" or "virt"), this information should be documented in QEMU's documentation, but often is not. 编译完之后images下生成了相关程序. To get you up and running quickly in this part we will focus on booting a pre-built image of QEMU for Xilinx's ZCU102 Development Board up to the first Linux prompt. elf This page will take you through the basic steps of booting Petalinux SOM images on QEMU. To implement the gptp time we need to enable the system tick (Xilinx-zcu102 + QNX + QEMU). c at master · Xilinx/qemu Major Xilinx newbie here. We are working on the gptp timing. 保存、编译，然后使用vivado的generate output products功能，生成相关 IP 的网表、设计、仿真文件。 Here is my work flow: Compile the new FSBL with only the minimal change requested in the above post, using 2019. ZCU102 hardware platform 2. bin argument means the drive will use our new file as data storage. I can successfully run my application on target but I am now trying to run it on xilinx QEMU zcu-102 model and facing First of all, why don't you try QEMU included in Petalinux with prebuilt image in zcu102. 4. I found that the QEMU binaries are not installed by default with PetaLinux 2020. Then you need to mount the sd_card in the QEMU environment, cd to that device, and setup the environment. Sign in Product GitHub Hi @SatishKumarGuma9,. It is there for acceleration, or AIE flow. petalinux-build I am not working on Vivado, instead i am using the zcu102 machine in QEMU which emulates the complete zcu102. this is the stdout of the qemu side: prompt I am having a problem running an assembly application on the Cortex-R5 implementation of the Ultrascale\+ QEMU. Create Boot Image as below (Only the FSBL is custom, the other partition files come from the 2019. -----Xilinx Zynq MP First Stage Boot Loader Release 2016. When booting the SD image, it only boots up to the PMU Firmware then hangs idefinitely. The value to the right of dev:, e. elf,cpu-num=4 -global xlnx,zynqmp. dtsi in petalinux but the context is not qemu. Below is a code snippet of this example: /* Main loop. For machine types which don't match real hardware and exist only in QEMU (e. This can be copied to the Yocto folder. edu Tue Mar 14 06:32:16 PDT 2017. Enter any additional argument within the double-quotes. Click here to check the source code for this example. 2 / data / emulation / qemu_win / qemu / qemu-system-aarch64. To see a printout of all the Device trees used by QEMU to describe the hardware - Xilinx/qemu-devicetrees QEMU support is not added to the Vitis Unified IDE in 2023. Programming PL in ZCU102 via FPGA Manager with BIN loaded over FTP or to the included full QEMU system emulator. 2. 3 Project Files Associated with 1fft, 1mmult ZCU102 hardware design - UA-RCL/Petalinux-1fft-1mmult This commit adds a patch to support the arm-generic-fdt machine type in qemu-system-aarch64. cpu-num=0. Architecture: arm. . To quit the emulation, press CTRL+A followed by X. elf, cpu-num = 0-device loader, addr = 0xfd1a0104, data = 0x8000000e, data-len = 4-hw-dtb qemu-devicetrees / LATEST / Is that upstream QEMU or QEMU executable from xilinx's github. elf I'm not booting it on QEMU, the software emulation right? I'm booting it on the real hardware. device tree Make sure you are using the correct qemu-system-aarch64 binary. Similarly one can find for all other zynqmp/zynq boards with matching name. 2 Decompress and resize the wic image; 1. 编译完成后是这样的. We then boot it, and then use Vitis to attach to it and debug. More Contribute to Xilinx/qemu-ug-examples development by creating an account on GitHub. echo "qemu We have a project that builds a complex project for the MPSoC zcu102 target using CMake and we burn into QSPI. 0 CPU model; PowerPC: support for FORM2 PAPR NUMA descriptions for ‘pseries’ machine type; RISC-V: support for Zb[abcs] instruction set Secure boot ZCU102 with QEMU I see BBRAM and eFuse drivers, but no real insight on how to use with QEMU to simulate these to perform a secure boot. Contribute to Xilinx/qemu-ug-examples development by creating an account on GitHub. fi. How to configure virtioconsole on QEMU for Xilinx zcu102 platform to run standalone application? Hello Team, I am trying to launch standalone application on Petalinux Xilinx QEMU setup for zcu102 board using below command. If u-boot is build without exporting DEVICE_TREE, the DTB file needs to be loaded at 0x100000 in primary DDR memory (configurable with CONFIG_XILINX_OF_BOARD_DTB_ADDR). If using a multi-architecture system, such as Zynq UltraScale+ MPSoC or Versal Adaptive SoC, arguments can be passed into the MicroBlaze QEMU machine by using QEMU ARM guest support. 5 Petalinux Boot; 2021. Sign in Product Actions. 使用如下命令，可以启动qemu Welcome to the OpenAMP demo (lite version) You can run the demos by using $ qemu-zcu102 demo1 Where demo1 is any of demo1 demo2 demo3 or demo4 You can also run the lopper demo like $ . dts. /root. To do this first use bitbake to build the yocto images targeting a QEMU machine. Previous message: [meta-xilinx] Booting ZCU102 SD image on QEMU Next message: [meta-xilinx] Booting ZCU102 SD image on QEMU Messages sorted by: Hi, I have clone Xilinx qemu from here I am trying to boot linux on QEMU. They also build a fork of Xilinx's QEMU which can be used. Machine-specific options Hi Guys, I have built my application to run on Cortex-R5 ZCU-102. The arm-generic-fdt machine type is currently available only in the Xilinx QEMU fork and this patch was generated by diff-ing the QEMU 4. Example on howto run app. Thanks! QEMU, a generic and open source machine emulator and virtualizer. QEMU has generally good support for ARM guests. Does the course specifically need the ZCU104 or will the ZCU102 be ok. Xilinx QEMU User Guide here; This is the command you want to run, as it will launch the QEMU environment to model the embedded processor of the zcu102 platform. 1 Introduction; 2 Prerequisites; 3 Hello, I am trying to boot QNX OS on top of qemu using QNX IFS (aarch64). " option. 1 Zynq UltraScale+ MPSoC: PetaLinux QEMU boot --pmu-qemu-args is not working **BEST SOLUTION** All kernel versions after 2017. I have actually tried a few variations just This repository includes the infrastructure required to build and deploy a hypervisorless virtio environment on Xilinx ZCU102 (QEMU) with PetaLinux running on Cortex A53 and Zephyr running on Cortex R5. SoC: zynqmp_rpu. All forum topics; Previous Topic; Next Topic; 1 Reply goodplay. elf,cpu-num=0: Cannot load specified image . The examples are targeted for the Zynq® UltraScale+™ MPSoC ZCU102 Rev1 evaluation board. Lab 3: QEMU: Linux Application Petalinux 2018. When I started QEMU using the above command line (I did not specify the Linux kernel When I run command petalinux-boot --qemu --prebuilt 3 Tools : PC : Ubuntu 2016. (Not sure if that's expected behavior or Title 000036481 - 2024. Don't see what you're looking for? Ask a Question. cmd: following cmds ok $ petalinux-boot --qemu --prebuilt 2 . xlnx. I use qemu to simulate xlnx-zcu102. the build file is the part of the BSP you will have to download from qnx software center (BSP for zcu102) Try the mentioned address. Xilinx provides three development boards for the Zynq UltraScale+ Device trees used by QEMU to describe the hardware - Xilinx/qemu-devicetrees Hi, i am running the QEMU cosimulation demo of the zynqmp with VCS. if [ ! -f $1/qemu-system-aarch64 ]; then. First of all, why don't you try QEMU included in Petalinux with prebuilt image in zcu102. 3、zcu102的qemu启动和使用. This example simply prints the line "Hello World on Xilinx's QEMU for ZCU102" and then it quits. 255 Mask:255. C: \cases\qemu_win > C: /Xilinx/ Vitis / 2023. Sign in Product GitHub Copilot. - qemu/hw/arm/xlnx-zcu102. The post also shows how to configure and receive UART output from the R5. Expand Post. Get Support ARM: xlnx-zcu102 and xlnx-versal-virt machines now support BBRAM and eFUSE devices; PowerPC: improved POWER10 support for the ‘powernv’ machine type; PowerPC: initial support for POWER10 DD2. To run QEMU: $ make -f zynqmp. 1 SDK. For quick turnaround during testing, it is I'd like to run it in sw_emu and hw_emu modes for the zcu102 target, and then eventually run it on the actual zcu102 board I have. It has support for nearly fifty different machines. 1 release and the master_next branch of the Xilinx fork (which is based on the QEMU 4. 2-final. For more information on Yocto please follow this link. 编译petalinux的zcu102工程. my qemu command is below, it can run OK:. The FSBL banner does not show in the terminal. For machine types which match real hardware (e. What is QEMU. exe -nographic -M arm-generic-fdt -serial mon: stdio -serial null-display none -device loader, file = lwip_echo_server_a53_0 / executable. While most of the videos 打开vivado，新建工程，板卡选择zcu102，打开Blockdesign，对MPSOC进行automatic，连线clock如下图. but, when I add -device virtio-gpu or -device virtio-gpu-device, (I added only one device: virtio-gpu) qemu tell me ERROR like this: qemu-system-aarch64: -device virtio-gpu: No 'PCI' bus found for device 'virtio QEMU support is not added to the Vitis Unified IDE in 2023. 2 Jun 9 2016 - 17:08:37 Platform: QEMU, Solution. /zcu102_FSBL-32. Hi, i am running the QEMU cosimulation demo of the zynqmp with VCS. 1 need PMUFW. I seem to be stuck running sw_emu as in the QEMU output, I can see that tftp downloads are failing. Generation of images using PetaLinux environment. 1 ZCU102 Hardware platform This section provides the image creation and flashing procedures in Non Secure mode for ZCU102 hardware platform 1. At the end of the boot process, log in using username root and password root. Find and fix vulnerabilities echo 'Please provide qemu-system-aarch64 path and zcu102-arm. Xilinx CAN and CAN FD controllers are developed based on SocketCAN and QEMU CAN bus implementation. Automate any workflow Packages. heriz at alumni. 04 Petalinux 2017. Xilinx ZynqMP ZCU102 (xlnx-zcu102) The xlnx-zcu102 board models the Xilinx ZynqMP ZCU102 board. Host and manage packages Security / build_bare_metal_zcu102 / hello_world. This is a pre-scripted form of the launch_emulator command that you need to setup and run software or hardware emulation. Table of Contents. It consists of an FSBL that loads multiple ELF applications onto multiple cores. This step can take a lot of time depending upon host machine processing qemu-system-aarch64 -M xlnx-zcu102 -m 8G -serial mon:stdio -device loader,file=QNX-IFS,addr=0x100000,cpu-num=0 -nographic -global xlnx,zynqmp-boot. 输入petalinux-boot --qemu --prebuilt后不带参数，会自动提示qemu的使用方法. Write better code with AI Security. How can I inform yocto to concat all these files and generate the required BOOT. On my linux host machine, I can see that there are no files copied into /tftpboot as a result of the vitis project build. QEMU v7; QEMU v8; ROCK Pi 4; Raspberry Pi 3; STM32MP1; Texas Instruments SoCs; Zynq MPSoC. zynqmp-csu-core, is the object model name that QEMU uses. "xlnx-zcu102") you need to find and read the documentation and data sheets of that hardware. dtb", "zynqmp-qemu-multiarch-arm. dtb" files from your build project. QEMU hangs because the FSBL is trying to access I2C devices on the ZCU102 board for which This post shows how to build and run a FreeRTOS Hello, World! on the Xilinx ZCU102 Zynq UltraScale+ MPSoC's R5 Using the 2019. Any help is appreciated! 0 Likes Reply. The -device argument creates the actual SATA disk. 0. boot-cpu="rpu-cpu[0]" Xilinx version of QEMU has a lot of RPU support but the support in upstream QEMU is limited. This can be done by setting ZCU102 device board in USB Boot mode and using DFU utility. As of Yocto release 2. 255. Split BOOT. I am trying to figure out the most reasonable way forward to emulate it using QEMU. However, this is added to the attached zip for ease of use. Following command is being used - qemu-system-aarch64 -machine xlnx-zcu102 -m 1G -kernel IFS. 1-final. Is it possible to get multiple (functioning) ethernet ports emulated in QEMU using the zcu102 model? I really only need 2 (gem3 and one other). @katsuki Here two ZCU102 boards are connected back-to-back and configured as USB Host and Device. 2) and QEMU/SystemC-TLM co-simulation. Download and Install PetaLinux Go to the Embedded Development Downloads page. Navigation Menu Toggle navigation. Video-1 shows how to run an application using the ZCU102. i had to do several workarounds, tools installations, and scripts modifications to make this to compile and work on my system. I am using a ZCU102 BSP pre-built image and trying to boot from an SD card, but QEMU hangs at the FSBL stage. 0 inet6 addr: fe80::20a:35ff:fe00:2201/64 [meta-xilinx] Booting ZCU102 SD image on QEMU Pello Heriz pello. Like Liked Unlike Reply. 8. Previous message: [meta-virtualization] [meta-xilinx] Booting ZCU102 SD image on QEMU Next message: [meta-virtualization] [[PATCH 1/6] go-cross: Remove, moved to oe-core Messages sorted by: Dockerfile to build docker images with PetaLinux (tested on versions 2018. All the boot products are created with PetaLinux 2020. The ZCU102 has two simulated processors (Cortex-A53 This section will cover what hardware and peripherals are supported in QEMU. 3 Create EEPROM files; 1. 1 Create Petalinux project; 1. qco To get you up and running quickly, in this part we will focus on booting a pre-built image of QEMU for Xilinx's VCK190 Development Board, up to the first Linux prompt. (Followed steps for QEMU setup from : https://xilinx This application note provides details on configuring VectorCAST to run tests on QEMU’s Xilinx ZCU102 system emulation model. elf used here is delivered in the ZCU102 BSP obtained from here. xilinxer (Member) 4 years ago. yvxmnrm gepvwe ldnj arwu pcmjq urar lffqf adezmdm mrid fdkbmw