IOC mediator: boot IOC device from the main entry

Add "-i" in the DM boot command line for booting IOC mediator.

NOTE: currently only ioc_init will be called in the main entry, ioc_deinit
hasn't be called so far. The DM plans to add one virtual devices list inside
of struct vmctx in the near furture, and virtual devices data structure will
add one common deinit callbacks which will be called during VM exits.

Will support ioc_deinit once that patch merged.

Signed-off-by: Liu Yuan <yuan1.liu@intel.com>
Reviewed-by: Wang Yu <yu1.wang@intel.com>
Reviewed-by: Liu Shuo <shuo.a.liu@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

Author: yliu80

devicemodel/core/main.c

@@ -64,6 +64,7 @@
 #include "version.h"
 #include "sw_load.h"
 #include "monitor.h"
+#include "ioc.h"
 
 #define GUEST_NIO_PORT		0x488	/* guest upcalls via i/o port */
 
@@ -155,6 +156,7 @@ usage(int code)
 		"       -r: ramdisk image path\n"
 		"       -B: bootargs for kernel\n"
 		"       -v: version\n"
+		"       -i: ioc boot parameters\n"
 		"       --vsbl: vsbl file path\n"
 		"       --part_info: guest partition info file path\n"
 		"	--enable_trusty: enable trusty for guest\n",
@@ -604,7 +606,7 @@ main(int argc, char *argv[])
 	if (signal(SIGINT, sig_handler_term) == SIG_ERR)
 		fprintf(stderr, "cannot register handler for SIGINT\n");
 
-	optstr = "abehuwxACHIMPSWYvk:r:B:p:g:c:s:m:l:U:G:";
+	optstr = "abehuwxACHIMPSWYvk:r:B:p:g:c:s:m:l:U:G:i:";
 	while ((c = getopt_long(argc, argv, optstr, long_options,
 			&option_idx)) != -1) {
 		switch (c) {
@@ -633,6 +635,11 @@ main(int argc, char *argv[])
 		case 'g':
 			gdb_port = atoi(optarg);
 			break;
+
+		case 'i':
+			ioc_parse(optarg);
+			break;
+
 		case 'l':
 			if (lpc_device_parse(optarg) != 0) {
 				errx(EX_USAGE,
@@ -782,6 +789,7 @@ main(int argc, char *argv[])
 		pci_irq_init(ctx);
 		atkbdc_init(ctx);
 		ioapic_init(ctx);
+		ioc_init();
 
 		vrtc_init(ctx, rtc_localtime);
 		sci_init(ctx);