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#!/bin/sh
#
# A quick HOWTO to get u-boot up and running with qemu.
#
# For more detailed explanations and a LOT of examples, see the knowledge
# base article:
#
# http://lx-dokuwiki.lab.linutronix.de/03_knowledge/01_internal/u-boot/qemu
#
export CROSS_COMPILE=/opt/gcc-linaro-6.3.1-2017.05-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-
make vexpress_ca9x4_defconfig
make -j 8 u-boot.bin
TEXT_BASE=`grep CONFIG_SYS_TEXT_BASE u-boot.cfg | awk '{print $3}'`
./tools/mkimage -A arm -C none -T kernel -O linux -d u-boot.bin \
-a $TEXT_BASE -e $TEXT_BASE u-boot.uimg
QEMU_AUDIO_DRV="none" qemu-system-arm -M vexpress-a9 -nographic \
-kernel u-boot.uimg -net nic -net user,tftp=`pwd`
# Assuming the following files in the current working directory of the host:
# - zImage
# - vexpress-v2p-ca9.dtb
# - initramfs.uimg
#
# the following U-Boot commands can load/boot the kernel:
#
# dhcp 0x61000000 vexpress-v2p-ca9.dtb
# dhcp 0x61100000 initramfs.uimg
# dhcp 0x62100000 zImage
# setenv bootargs loglevel=7 console=ttyAMA0,115200 ip=dhcp
# bootz 0x62100000 0x61100000 0x61000000
# NOTE: The initramfs.uimg can be created from a cpio.gz with:
#
# ./tools/mkimage -A arm -C none -T ramdisk -O linux \
# -d initramfs.cpio.gz initramfs.uimg
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