--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/simagent/simup.c	Fri Mar 12 20:11:39 2021 +0000
@@ -0,0 +1,97 @@
+#include <sys/types.h>
+#include <strings.h>
+#include "types.h"
+#include "abbdefs.h"
+#include "simregs.h"
+
+#define	WAIT_ONE_TDMA	60000
+
+extern u16 abb_reg_read();
+extern void abb_reg_write();
+
+int sim_if_state;
+u16 conf1_reg;
+
+void
+cmd_sim_up(argbulk)
+	char *argbulk;
+{
+	char *argv[2];
+	u16 abb_sim_reg;
+	unsigned count;
+
+	if (sim_if_state) {
+		printf("ERROR: SIM interface is already up\n");
+		return;
+	}
+	if (parse_args(argbulk, 1, 1, argv, 0) < 0)
+		return;
+	if (!strcmp(argv[0], "1.8"))
+		abb_sim_reg = 2;
+	else if (!strcmp(argv[0], "3"))
+		abb_sim_reg = 3;
+	else {
+		printf("ERROR: \"1.8\" or \"3\" argument expected\n");
+		return;
+	}
+	abb_reg_write(VRPCSIM, abb_sim_reg);
+	sim_if_state = 1;
+
+	/* wait for regulator like TI's SIM_StartVolt() */
+	for (count = 0; ; ) {
+		abb_sim_reg = abb_reg_read(VRPCSIM);
+		if (abb_sim_reg & 4)
+			break;
+		if (++count >= 5) {
+			printf("ERROR: VRSIM is not in proper regulation\n");
+			return;
+		}
+		wait_ARM_cycles(WAIT_ONE_TDMA);
+	}
+
+	/* TI's SIM_ManualStart() code follows */
+	SIMREGS.conf1 = conf1_reg = 0x8004;
+	SIMREGS.cmd = SIM_CMD_CLKEN;
+
+	SIMREGS.cmd = SIM_CMD_CLKEN | SIM_CMD_STOP;
+	wait_ARM_cycles(WAIT_ONE_TDMA * 4);
+
+	SIMREGS.cmd = SIM_CMD_CLKEN | SIM_CMD_SWRST;
+	wait_ARM_cycles(WAIT_ONE_TDMA);
+
+	SIMREGS.conf2  = 0x0940;
+
+	//enter in manual mode to start the ATR sequence
+	SIMREGS.conf1 = conf1_reg |= SIM_CONF1_BYPASS;
+	wait_ARM_cycles(WAIT_ONE_TDMA);
+
+	SIMREGS.conf1 = conf1_reg |= SIM_CONF1_SVCCLEV;
+	wait_ARM_cycles(WAIT_ONE_TDMA);
+
+	abb_sim_reg |= 8;
+	abb_reg_write(VRPCSIM, abb_sim_reg);
+	wait_ARM_cycles(WAIT_ONE_TDMA);
+
+	SIMREGS.conf1 = conf1_reg &= ~SIM_CONF1_SIOLOW;
+	wait_ARM_cycles(WAIT_ONE_TDMA);
+
+	SIMREGS.conf1 = conf1_reg |= SIM_CONF1_SCLKEN;
+	SIMREGS.conf1 = conf1_reg &= ~SIM_CONF1_TXRX; //set to receive mode
+	wait_ARM_cycles(WAIT_ONE_TDMA * 3);
+
+	/* flush any garbage in the Rx FIFO */
+	for (count = 0; ; ) {
+		if (SIMREGS.stat & SIM_STAT_FEMPTY)
+			break;
+		(void) SIMREGS.drx;
+		if (++count >= 32) {
+			printf("ERROR: Rx FIFO flush does not end\n");
+			return;
+		}
+	}
+
+#if 0
+	/* lift the card out of reset! */
+	SIMREGS.conf1 = conf1_reg |= SIM_CONF1_SRSTLEV;
+#endif
+}