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57b071ccaa
This installs a script which is able to kexec a kernel through the network from user space. As the proprietary bootloader is limited and does not offer such a feature, this is a good alternative for developers.
28 lines
780 B
Bash
28 lines
780 B
Bash
#!/bin/sh
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# Copyright (C) 2014 Romain Perier <romain.perier@gmail.com>
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# Released under the MIT license (see COPYING.MIT for the terms)
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GATEWAY=$(route | grep default | sed 's/ [ ]*/:/g' | cut -d ':' -f 2)
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fail() {
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echo $1
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exit 1
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}
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# If we are not already connected, connect eth0 with DHCP
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ifconfig eth0 | grep 'inet addr:[0-9]*\.[0-9]*\.[0-9]*\.[0-9]* ' >/dev/null
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if [ $? -ne 0 ]; then
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echo "* Starting DHCP on eth0"
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udhcpc -n -i eth0 || fail "Unable to establish a DHCP session with eth0"
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fi
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tftp -g -r zImage $GATEWAY >/dev/null || fail "Unable to get zImage throught TFTP"
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echo "* Found zImage on $TFTP_SERVER"
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echo -n "Do you want to reboot to the new kernel on the fly ? [y/n] "
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read boot
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if [ "$boot" = "y" ]; then
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kexec -l zImage
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kexec -e
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fi
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