pr: can flash using bus pirate

scripts/flash_ec_buspirate.sh

@@ -0,0 +1,85 @@
+#!/usr/bin/env bash
+#
+# Wiring:
+# | JECDB               | BusPirate 5 |
+# |  1 EC_DEBUG_VCC     | VOUT/VREF   |
+# |  2 UART_0_CRXD_DTXD |             |
+# |  3 JTAG_TMS         |             |
+# |  4 JTAG_CLK         |             |
+# |  5 JTAG_DTO         |             |
+# |  6 EC_UART0_TX      | IO5         |
+# |  7 EC_UART0_RX      | IO4         |
+# |  8 UART_0_CTXD_DRXD |             |
+# |  9 nRESETI_R        | IO2         |
+# | 10 GND              | GND         |
+
+
+DEVICE=${DEVICE:-"/dev/serial/by-id/usb-Bus_Pirate_Bus_Pirate_5"}
+CTRLUART=(${DEVICE}*-if00)
+FLASHUART=$(basename $(readlink ${DEVICE}*-if00))
+
+if [ $# -eq 0 ]; then
+	#no argument, try default locations
+	search_paths=("${HOME}/software/ec-lotus/src/platform/ec/build/zephyr/azalea/output"\
+		"${HOME}/chromiumos/src/platform/ec/build/zephyr/azalea/output")
+
+	for search in ${search_paths[@]}
+	do
+		if [ -d $search ] 
+		then
+			echo "${search} exists"
+			FLASH_SRC="${search}/ec.bin"
+			MONITOR="${search}/npcx_monitor.bin"
+		fi
+	done
+else
+  #allow specifying a file as argument
+  FLASH_SRC="$1/ec.bin"
+  MONITOR="$1/npcx_monitor.bin"
+fi
+echo "USING ${FLASH_SRC} to flash EC"
+
+#clear any invalid commands from uart buffer
+echo -e "n\r\n" > ${CTRLUART}
+# Put EC into reset by pulling nRESETI_R (pin 2 on buspirate) low
+echo -e "\r\na 2\r\n" > ${CTRLUART}
+#read INPUT < ${CTRLUART}
+sleep 1
+
+# Enable BusPirate's 10k internal pulldown on UART RX wired to IO6
+# This switches the Nuvoton EC's UART from console mode into UUT update mode
+echo -e "\r\na 6\r\n" > ${CTRLUART}
+sleep 1
+
+# Take out of reset, set pin 2 (connected to nRESETI_R) as a pullup input on the buspirate
+ echo -e "\r\n@ 2\r\n" > ${CTRLUART}
+sleep 1
+
+# Bridge UART via the BusPirate
+# This turns the current UART consle to the bus pirate into a bridge to the EC
+# After we're done, to exit, you have press the buspirate button
+echo -e "\r\nbridge\r\n" > ${CTRLUART}
+
+sleep 1
+
+#### DO FLASH
+echo "Using NUVOTON Tool ./uartupdatetool" 
+./uartupdatetool --port ${FLASHUART} --opr wr --addr 0x200c3020 --file ${MONITOR}
+./uartupdatetool --port ${FLASHUART} --opr wr --auto --addr 0x0000 --file ${FLASH_SRC}
+
+read -p "Press button on buspirate" userinput
+
+#### TAKE OUT OF RESET
+
+#put ec into reset 
+echo -e "\r\na 2\r\n" > ${CTRLUART}
+#read INPUT < ${CTRLUART}
+sleep 1
+
+# Enable BusPirate's 10k internal pulldown on UART RX wired to IO6
+echo -e "\r\n@ 6\r\n" > ${CTRLUART}
+sleep 1
+
+
+# take out of reset
+echo -e "\r\n@ 2\r\n" > ${CTRLUART}