jtagspi/pld: add support from intel driver

Provide jtagspi with information to use jtagspi for
programming spi-flash devices on intel devices using
a proxy bitstream.

Change-Id: Ib947b8c0dd61e2c6fa8beeb30074606131b1480f
Signed-off-by: Daniel Anselmi <danselmi@gmx.ch>
Reviewed-on: https://review.openocd.org/c/openocd/+/7837
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>

src/pld/intel.c

@@ -362,6 +362,12 @@ static int intel_get_ipdbg_hub(int user_num, struct pld_device *pld_device, stru
 	return ERROR_OK;
 }
 
+static int intel_get_jtagspi_userircode(struct pld_device *pld_device, unsigned int *ir)
+{
+	*ir = USER1;
+	return ERROR_OK;
+}
+
 COMMAND_HANDLER(intel_set_bscan_command_handler)
 {
 	unsigned int boundary_scan_length;
@@ -412,7 +418,6 @@ COMMAND_HANDLER(intel_set_check_pos_command_handler)
 	return ERROR_OK;
 }
 
-
 PLD_CREATE_COMMAND_HANDLER(intel_pld_create_command)
 {
 	if (CMD_ARGC != 4 && CMD_ARGC != 6)
@@ -498,4 +503,5 @@ struct pld_driver intel_pld = {
 	.pld_create_command = &intel_pld_create_command,
 	.load = &intel_load,
 	.get_ipdbg_hub = intel_get_ipdbg_hub,
+	.get_jtagspi_userircode = intel_get_jtagspi_userircode,
 };

tcl/board/bemicro_cycloneiii.cfg

@@ -16,5 +16,9 @@ source [find fpga/altera-cycloneiii.cfg]
 
 #quartus_cpf --option=bitstream_compression=off -c output_files\cycloneiii_blinker.sof cycloneiii_blinker.rbf
 
-#openocd -f board/bemicro_cycloneiii.cfg -c "init" -c "pld load 0 cycloneiii_blinker.rbf"
+#openocd -f board/bemicro_cycloneiii.cfg -c "init" -c "pld load cycloneiii.pld cycloneiii_blinker.rbf"
 # "ipdbg -start -tap cycloneiii.tap -hub 0x00e -tool 0 -port 5555"
+
+
+set JTAGSPI_CHAIN_ID cycloneiii.pld
+source [find cpld/jtagspi.cfg]