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.

diff --git a/litex/build/openocd.py b/litex/build/openocd.py
index 04b5a7f04a202f0744ede50fa144318a3e28271c..c149ca2ccd78e2baede767a1b1c52dfa0d168849 100644 (file)
--- a/litex/build/openocd.py
+++ b/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"