QEMU-arma9 Board Support Package 1. About this document ====================== This document contains common and non-hardware specific information. Please refer to README.hardware for hardware specific information. Dependencies ------------ This layer depends on the oe-core layer Maintenance ----------- This layer is maintained by Wind River Systems, Inc. Contact <support@windriver.com> or your support representative for more information on submitting changes. 2. Boot Instructions ==================== Since this BSP is targeted at a QEMU simulated board, run the command below in the project directory to load the BSP on top of QEMU: $ runqemu qemuarma9 nographic 2.1 RAM Root File System (initramfs) --------------------------------- 2.1.1 Create the initrd image ----------------------------- Build the gzip'd initramfs image with: $ bitbake <xyz>-initramfs The resulting file can be found at tmp/deploy/images/qemuarma9/core-image-minimal-initramfs-qemuarma9.cpio.gz 2.1.2 Deployment ---------------- Pass the run-time option "-initrd" to qemuparams to use the initramfs image as a ram disk, as shown in the example below. And add the 'root=/dev/ram' to bootparams. For example, run the following command in the project directory to run the guest in QEMU using initrd: $ runqemu nographic slirp qemuparams="-initrd `pwd`/tmp/deploy/images/qemuarma9/core-image-minimal-initramfs-qemuarma9.cpio.gz -M vexpress-a9" bootparams="root=/dev/ram" 2.2 Virtual Disk on Qemu ------------------------ 2.2.1 Create virtual disk image ------------------------------- $ bitbake core-image-minimal $ ls tmp/deploy/images/qeumarma9/core-image-minimal-qemuarma9.ext4 2.2.2 Deployment ------------------ $ runqemu qemuarma9 nograhpic Example: command to get MMC disk image bootup. % tmp/work/x86_64-linux/qemu-helper-native/1.0-r1/recipe-sysroot-native/usr/bin/qemu-system-arm -sd tmp/deploy/images/qemuarma9/core-image-minimal-qemuarma9-20180928071920.rootfs.ext4 -show-cursor -nographic -machine vexpress-a9 -m 256 -serial mon:stdio -serial null -kernel tmp/deploy/images/qemuarma9/zImage--4.18-rc++git0+0659636384_ef0043f38a-r0-qemuarma9-20180928065251.bin -append 'root=/dev/mmcblk0 rw highres=off console=ttyS0 mem=256M ip=dhcp console=ttyAMA0,115200 console=tty ' -dtb tmp/deploy/images/qemuarma9/vexpress-v2p-ca9--4.18-rc++git0+0659636384_ef0043f38a-r0-qemuarma9-20180928065251.dtb