build/openocd: add set_qe parameter to flash

QE bit is not set on blank SPI flashes and need to be set when SPI X4 is enabled in the bistream to load the FPGA.

litex/build/openocd.py

@@ -24,11 +24,12 @@ class OpenOCD(GenericProgrammer):
         ])
         subprocess.call(["openocd", "-f", self.config, "-c", script])
 
-    def flash(self, address, data):
+    def flash(self, address, data, set_qe=False):
         flash_proxy = self.find_flash_proxy()
         script = "; ".join([
             "init",
             "jtagspi_init 0 {{{}}}".format(flash_proxy),
+            "jtagspi set_qe 0 1" if set_qe else "",
             "jtagspi_program {{{}}} 0x{:x}".format(data, address),
             "fpga_program",
             "exit"