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#!/bin/bash
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echo "================================================================================"
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echo "| FPGA Gateware Update |"
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echo "| |"
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echo "| Please ensure that the mpfs_bitstream.spi file containing the gateware |"
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echo "| update has been copied to directory /lib/firmware. |"
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echo "| |"
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echo "| !!! This will take a couple of minutes. !!! |"
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echo "| |"
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echo "| Give the system a few minutes to reboot itself |"
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echo "| after Linux has shutdown. |"
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echo "| |"
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echo "================================================================================"
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if [ ! -f /usr/sbin/mtd_debug ] ; then
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echo "Install mtd-utils package"
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exit 2
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fi
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read -rsp $'Press any key to continue...\n' -n1 key
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# Already mounted by default...
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#/usr/bin/mount -t debugfs none /sys/kernel/debug
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# Trash exisitng device tree overlay in case the rest of the process fails:
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/usr/sbin/mtd_debug erase /dev/mtd0 0x0 0x10000
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# Write device tree overlay
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dtbo_ls=$(ls -l /lib/firmware/mpfs_dtbo.spi)
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dtbo_size=$(echo $dtbo_ls | cut -d " " -f 5)
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/usr/sbin/mtd_debug write /dev/mtd0 0x400 $dtbo_size /lib/firmware/mpfs_dtbo.spi > /dev/zero
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# Fake the presence of a golden image for now.
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/usr/sbin/mtd_debug write /dev/mtd0 0 4 /dev/zero > /dev/zero
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# Initiate FPGA update.
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echo 1 > /sys/kernel/debug/fpga/microchip_exec_update
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# Reboot Linux for the gateware update to take effect.
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# FPGA reprogramming takes places between Linux shut-down and HSS restarting the board.
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/usr/sbin/reboot
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