Merge pull request #331 from ozbenh/misc

jtag tooling improvements & gitignore fix

.gitignore

@@ -13,4 +13,5 @@ tests/*/*.hex
 tests/*/*.elf
 TAGS
 litedram/build/*
+liteeth/build/*
 obj_dir/*

openocd/arty.cfg

@@ -0,0 +1,6 @@
+interface ftdi
+ftdi_vid_pid 0x0403 0x6010
+ftdi_channel 0
+ftdi_layout_init 0x00e8 0x60eb
+reset_config none
+adapter_khz 25000

openocd/flash-arty

@@ -7,7 +7,7 @@ import sys
 
 BASE = os.path.dirname(os.path.abspath(__file__))
 
-def flash(config, flash_proxy, address, data, filetype="", set_qe=False):
+def flash(cable, config, flash_proxy, address, data, filetype="", set_qe=False):
     script = "; ".join([
         "init",
         "jtagspi_init 0 {{{}}}".format(flash_proxy),
@@ -17,7 +17,7 @@ def flash(config, flash_proxy, address, data, filetype="", set_qe=False):
         "exit"
     ])
     print(script)
-    subprocess.call(["openocd", "-f", config, "-c", script])
+    subprocess.call(["openocd", "-f", cable, "-f", config, "-c", script])
 
 def get_version():
     a = subprocess.run(["openocd", "-v"], capture_output=True)
@@ -33,6 +33,7 @@ parser.add_argument("file", help="file to write to flash")
 parser.add_argument("-a", "--address", help="offset in flash", type=lambda x: int(x,0), default=0)
 parser.add_argument("-f", "--fpga", help="a35, a100 or a200", default="a35")
 parser.add_argument("-t", "--filetype", help="file type such as 'bin'", default="")
+parser.add_argument("-c", "--cable", help="cable type such as 'arty'", default="arty")
 args = parser.parse_args()
 
 version = get_version()
@@ -49,5 +50,6 @@ else:
 
 proxy = os.path.join(BASE, proxy)
 config = os.path.join(BASE, "xilinx-xc7{}.cfg".format(version))
+cable = os.path.join(BASE, "{}.cfg".format(args.cable))
 
-flash(config, proxy, args.address, args.file, args.filetype.lower())
+flash(cable, config, proxy, args.address, args.file, args.filetype.lower())

openocd/xilinx-xc7.cfg

@@ -1,9 +1,3 @@
-interface ftdi
-ftdi_vid_pid 0x0403 0x6010
-ftdi_channel 0
-ftdi_layout_init 0x00e8 0x60eb
-reset_config none
-adapter_khz 25000
 
 source [find cpld/xilinx-xc7.cfg]
 

openocd/xilinx-xc7_openocd_v0.11.cfg

@@ -1,13 +1,6 @@
 # This file is the same sa xilinx-xc7.cfg, except we use
 # verify_image instead of verify_bank
 
-interface ftdi
-ftdi_vid_pid 0x0403 0x6010
-ftdi_channel 0
-ftdi_layout_init 0x00e8 0x60eb
-reset_config none
-adapter_khz 25000
-
 source [find cpld/xilinx-xc7.cfg]
 
 # From jtagspi.cfg with modification to support

scripts/mw_debug/mw_debug.c

@@ -220,7 +220,7 @@ static int jtag_init(const char *target)
 	int rc, part;
 
 	if (!target)
-		target = "DigilentHS1";
+		target = "probe";
 	sep = strchr(target, ':');
 	cable = strndup(target, sep - target);
 	if (sep && *sep) {
@@ -237,6 +237,15 @@ static int jtag_init(const char *target)
 	}
 	jc->main_part = 0;
 
+	if (strcmp(cable, "probe") == 0) {
+		char *cparams[] = { NULL, NULL,};
+		rc = urj_tap_cable_usb_probe(cparams);
+		if (rc != URJ_STATUS_OK) {
+			fprintf(stderr, "JTAG cable probe failed\n");
+			return -1;
+		}
+		cable = strdup(cparams[1]);
+	}
 	rc = urj_tap_chain_connect(jc, cable, params);
 	if (rc != URJ_STATUS_OK) {
 		fprintf(stderr, "JTAG cable detect failed\n");
@@ -735,10 +744,8 @@ int main(int argc, char *argv[])
 		}
 	}
 
-	if (b == NULL) {
+	if (b == NULL)
-		fprintf(stderr, "No backend selected\n");
+		b = &jtag_backend;
-		exit(1);
-	}
 
 	rc = b->init(target);
 	if (rc < 0)