89 lines
2.3 KiB
Bash
Executable File
89 lines
2.3 KiB
Bash
Executable File
#!/bin/sh
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#
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# Load FPGA firmware from SD card and program FPGA.
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#
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. /opt/puzzlefw/lib/functions.sh
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start() {
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# Read hardware revision from EEPROM
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read_eeprom
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if [ "$eeprom_hw_rev" = "STEM_125-14_v1.0" ]; then
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# Red Pitaya with XC7Z010 and 2 analog inputs
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FIRMWARE_FILE="puzzlefw_top.bit.bin"
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elif [ "$eeprom_hw_rev" = "STEM_125-14_Z7020_4IN_v1.3" ]; then
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# Red Pitaya with XC7Z020 and 4 analog inputs
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FIRMWARE_FILE="puzzlefw_top_4ch.bit.bin"
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else
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echo "ERROR: Unsupported hardware revision '$eeprom_hw_rev'" >&2
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exit 1
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fi
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# If firmware is not on rootfs, copy it from the SD card.
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if [ ! -f /lib/firmware/$FIRMWARE_FILE ]; then
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mkdir -p /lib/firmware
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mkdir -p /mnt/tmp_sdcard
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mount -t vfat -o fmask=0177 -r /dev/mmcblk0p1 /mnt/tmp_sdcard
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if ! cp /mnt/tmp_sdcard/$FIRMWARE_FILE /lib/firmware ; then
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echo "ERROR: Failed to copy FPGA firmware from SD card" >&2
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fi
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umount /mnt/tmp_sdcard
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rmdir /mnt/tmp_sdcard
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fi
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# Check that firmware is in place.
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if [ ! -f /lib/firmware/$FIRMWARE_FILE ]; then
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echo "ERROR: FPGA firmware not found" >&2
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exit 1
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fi
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# Drive internal GPIO(0) low to reset FPGA.
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# Note: EMIO GPIO(n) is gpio (n + 54) in Linux.
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gpioset 0 54=0
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# Program FPGA.
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echo "Programming FPGA ..."
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echo 0 > /sys/class/fpga_manager/fpga0/flags
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echo $FIRMWARE_FILE > /sys/class/fpga_manager/fpga0/firmware
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# Wait until FPGA programmed.
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sleep 5
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if [ "$eeprom_hw_rev" = "STEM_125-14_v1.0" ]; then
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# Drive internal GPIO(2) high to enable ADC duty cycle stabilizer.
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gpioset 0 56=1
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elif [ "$eeprom_hw_rev" = "STEM_125-14_Z7020_4IN_v1.3" ]; then
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# Program ADCs for DDR data mode and enable duty cycle stabilizer.
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/opt/puzzlefw/bin/puzzle-adccfg init --force --dcs
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# Enable ADC output randomization.
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/opt/puzzlefw/bin/puzzle-adccfg format --rand
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# Drive internal GPIO(3) high to enable sample derandomization in FPGA.
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gpioset 0 57=1
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fi
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# Drive internal GPIO(0) high to release FPGA reset.
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gpioset 0 54=1
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sleep 1
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}
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case "$1" in
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start)
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start
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;;
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stop|restart|reload)
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;;
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*)
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echo "Usage: $0 start"
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exit 1
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esac
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