I tried as mentioned at: Can ARM qemu system emulator boot from card image without kernel param? to remove -kernel and -append and add -bios u-boot.bin. So there is a U-Boot binary there: u-boot.bin, but how do I use that with QEMU? Lrwxrwxrwx 1 ciro ciro 11 _13:36:25 rootfs.ext4 -> rootfs.ext2 output/host/usr/bin/qemu-system-aarch64 -M virt -cpu cortex-a57 -nographic -smp 1 -kernel output/images/Image -append "root=/dev/vda console=ttyAMA0" -netdev user,id=eth0 -device virtio-net-device,netdev=eth0 -drive file=output/images/rootfs.ext4,if=none,format=raw,id=hd0 -device virtio-blk-device,drive=hd0 Now, I can boot fine without U-Boot with the command line mentioned at: How to download the Torvalds Linux Kernel master, (re)compile it, and boot it with QEMU?. Install kernel image to /boot in target.U-Boot configuration (Using an in-tree board defconfig file).Therefore, these environment variables must be exported in any shell instance that will run configure/compile commands to build U-Boot or Linux for the target module.I tried: git clone git:///buildroot The U-Boot and Linux makefiles use the environment variables ARCH/CROSS_COMPILE to configure and call the compiler correctly. Select the correct one from the tabs below: You have to choose to download either the 32 bit or 64 bit Arm cross-toolchain, according to the architecture of your Computer on Module SoC. If you use 32-bit Linux on your host machine (check using uname -m), you can still download the older 14.09 release which is still 32-bit: Note: Since the 14.11 release Linaro only provides x86_64 toolchains. Linaro releases well tested binary toolchains which can be used to cross-compile software for our modules (choose gcc-linaro-5.2-2015.11-2-x86_64_):īeginning with image V2.0, we transitioned to using the hard-float ABI: Linaro releases well tested binary toolchains which can be used to cross-compile software for our modules (choose gcc-linaro-6.2.1-2016.11-x86_64_):īeginning with image V2.6, as part of our OpenEmbedded Jethro update we transitioned to using version 5.2 of the gcc compiler. Before proceding, you have to installīeginning with image 2.7b2, as part of our OpenEmbedded Morty update we transitioned to using version 6.2 of the gcc compiler. To disable the serial console modifying U-Boot, you need to reconfigure it following some basic steps. Disable U-Boot Console Output on UART_A Custom U-Boot Make sure to check on UART (Linux) the name of the UART interfaces available for your specific SoM before proceeding. Here are sections for disabling the console on U-Boot and the Linux kernel. Disable the Debug UART (Serial Console) We advise you to use either the default Debug Port defined by Toradex or NXP.įor the i.MX 8/8X SoMs which have a System Controller Unit/System Controller Firmware (SCU/SCFW), or other SoMs from the i.MX 8 family (such as the i.MX 8M Mini) which use a BootROM, it may be nearly or even impossible to change the default UART. We don't provide instructions on how to do this. You want to access a service hosted on the board, for instance, a web server or a remote graphical user interface.Ĭhange the Debug UART (Serial Console) to Another Port .The DHCP tables from your LAN router were refreshed and now the board has a different IP address.You are connecting to the debug UART because you were unable to login via SSH due to missing the board IP.To get your board IP address, follow the instructions from the section Find your IP and MAC address on the article Basic Linux Commands. ![]() In case you want to know how to set up a terminal emulator to start accessing your module, please refer to Serial Terminal Emulator article. Make sure that the jumpers JP19 and JP17 are set to USB mode as shown in the image below: Setting up a terminal Use UART A via the USB Type-B connector X27: Unplug the device from your computer and run: Linux - Find the Number of the ttyUSB Port Your COMx port will be listed under Ports. Go to Control Panel and find the Device Manager. Windows - Find the Number of the COM Port port: it depends on your hardware, often it is /dev/ttyUSBx on Linux, or COMx on Windows, being x a number to be determined in the next section.Console Serial Parameters Ĭonnecting to the board requires some parameters, here they are: This section applies to both our BSP Layers and Reference Images for Yocto Project and TorizonCore. You can easily access your Toradex SoM via the serial, in this section, you will find out how to set up the hardware on each of our boards as well as know the parameters. In case you would like to disable debug messages or the virtual console on graphical output (DVI-I, HDMI, LVDS, or VGA) please refer to the Framebuffer (Linux) article. This article shows how to disable the debug messages on the serial console only.
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