exo: add usb3 force enable support

Like the other configs, it can be read from system_settings.ini and be set.

Additionally a new `usb3force` key was added to allow user to override and enable/disable that setting via a boot entry.
This allows for fast (re)boot into an entry that disables that (important because of the huge interference that USB3 creates to Bluetooth and WiFi 2.4GHz).

bootloader/hos/fss.c

@@ -81,15 +81,16 @@ typedef struct _fss_content_t
 	char name[0x10];
 } fss_content_t;
 
-static void _update_r2p(const char *path)
+static void _update_r2p(launch_ctxt_t *ctxt, const char *path)
 {
-	char *r2p_path = malloc(256);
+	char *r2p_path = malloc(512);
 	u32 path_len = strlen(path);
+
 	strcpy(r2p_path, path);
 
 	while(path_len)
 	{
-		if ((r2p_path[path_len - 1] == '/') || (r2p_path[path_len - 1] == 0x5C))
+		if ((r2p_path[path_len - 1] == '/') || (r2p_path[path_len - 1] == '\\'))
 		{
 			r2p_path[path_len] = 0;
 			strcat(r2p_path, "reboot_payload.bin");
@@ -98,6 +99,15 @@ static void _update_r2p(const char *path)
 			is_ipl_updated(r2p_payload, r2p_path, h_cfg.updater2p ? true : false);
 
 			free(r2p_payload);
+
+			// Save fss0 parrent path.
+			if (ctxt)
+			{
+				r2p_path[path_len] = 0;
+				ctxt->fss0_main_path = r2p_path;
+				return;
+			}
+
 			break;
 		}
 		path_len--;
@@ -264,7 +274,7 @@ out:
 		gfx_printf("Done!\n");
 		f_close(&fp);
 
-		_update_r2p(path);
+		_update_r2p(ctxt, path);
 
 		return (!sept_ctxt ? 1 : sept_used);
 	}

bootloader/hos/hos.h

@@ -51,6 +51,7 @@ typedef struct _exo_ctxt_t
 	bool fs_is_510;
 	bool no_user_exceptions;
 	bool user_pmu;
+	bool *usb3_force;
 	bool *cal0_blank;
 	bool *cal0_allow_writes_sys;
 } exo_ctxt_t;
@@ -107,14 +108,16 @@ typedef struct _launch_ctxt_t
 	link_t kip1_list;
 	char*  kip1_patches;
 
-	u32  fss0_hosver;
 	bool svcperm;
 	bool debugmode;
 	bool stock;
-	bool atmosphere;
-	bool fss0_experimental;
 	bool emummc_forced;
 
+	char *fss0_main_path;
+	u32   fss0_hosver;
+	bool  fss0_experimental;
+	bool  atmosphere;
+
 	exo_ctxt_t exo_ctx;
 
 	ini_sec_t *cfg;

bootloader/hos/hos_config.c

@@ -220,6 +220,19 @@ static int _config_exo_user_pmu_access(launch_ctxt_t *ctxt, const char *value)
 	return 1;
 }
 
+static int _config_exo_usb3_force(launch_ctxt_t *ctxt, const char *value)
+{
+	// Override key found.
+	ctxt->exo_ctx.usb3_force = calloc(sizeof(bool), 1);
+
+	if (*value == '1')
+	{
+		DPRINTF("Enabled USB 3.0\n");
+		*ctxt->exo_ctx.usb3_force = true;
+	}
+	return 1;
+}
+
 static int _config_exo_cal0_blanking(launch_ctxt_t *ctxt, const char *value)
 {
 	// Override key found.
@@ -291,6 +304,7 @@ static const cfg_handler_t _config_handlers[] = {
 	{ "emummcforce", _config_emummc_forced },
 	{ "nouserexceptions", _config_dis_exo_user_exceptions },
 	{ "userpmu", _config_exo_user_pmu_access },
+	{ "usb3force", _config_exo_usb3_force },
 	{ "cal0blank", _config_exo_cal0_blanking },
 	{ "cal0writesys", _config_exo_cal0_writes_enable },
 	{ NULL, NULL },

bootloader/hos/secmon_exo.c

@@ -145,6 +145,7 @@ typedef struct _atm_fatal_error_ctx
 #define  EXO_FLAG_USER_PMU        BIT(4)
 #define  EXO_FLAG_CAL0_BLANKING   BIT(5)
 #define  EXO_FLAG_CAL0_WRITES_SYS BIT(6)
+#define  EXO_FLAG_ENABLE_USB3     BIT(7)
 
 #define EXO_FW_VER(mj, mn, rv) (((mj) << 24) | ((mn) << 16) | ((rv) << 8))
 
@@ -152,6 +153,7 @@ void config_exosphere(launch_ctxt_t *ctxt, u32 warmboot_base, bool exo_new)
 {
 	u32 exo_fw_no = 0;
 	u32 exo_flags = 0;
+	bool usb3_force = false;
 	bool user_debug = false;
 	bool cal0_blanking = false;
 	bool cal0_allow_writes_sys = false;
@@ -252,6 +254,34 @@ void config_exosphere(launch_ctxt_t *ctxt, u32 warmboot_base, bool exo_new)
 				break;
 			}
 		}
+
+		// Parse usb mtim settings. Avoid parsing if it's overridden.
+		if (ctxt->fss0_main_path && !ctxt->exo_ctx.usb3_force)
+		{
+			char set_path[256];
+			strcpy(set_path, ctxt->fss0_main_path);
+			strcat(set_path, "config/system_settings.ini");
+			LIST_INIT(sys_settings);
+			if (ini_parse(&ini_sections, set_path, false))
+			{
+				LIST_FOREACH_ENTRY(ini_sec_t, ini_sec, &ini_sections, link)
+				{
+					// Only parse usb section.
+					if (!(ini_sec->type == INI_CHOICE) || strcmp(ini_sec->name, "usb"))
+						continue;
+
+					LIST_FOREACH_ENTRY(ini_kv_t, kv, &ini_sec->kvs, link)
+					{
+						if (!strcmp("usb30_force_enabled", kv->key))
+						{
+							usb3_force = !strcmp("u8!0x1", kv->val);
+							break; // Only parse usb30_force_enabled key.
+						}
+					}
+					break;
+				}
+			}
+		}
 	}
 
 	// To avoid problems, make private debug mode always on if not semi-stock.
@@ -270,6 +300,11 @@ void config_exosphere(launch_ctxt_t *ctxt, u32 warmboot_base, bool exo_new)
 	if (ctxt->exo_ctx.user_pmu)
 		exo_flags |= EXO_FLAG_USER_PMU;
 
+	// Enable USB 3.0. Check if system_settings ini value is overridden. If not, check if enabled in ini.
+	if ((ctxt->exo_ctx.usb3_force && *ctxt->exo_ctx.usb3_force)
+			|| (!ctxt->exo_ctx.usb3_force && usb3_force))
+		exo_flags |= EXO_FLAG_ENABLE_USB3;
+
 	// Enable prodinfo blanking. Check if exo ini value is overridden. If not, check if enabled in exo ini.
 	if ((ctxt->exo_ctx.cal0_blank && *ctxt->exo_ctx.cal0_blank)
 			|| (!ctxt->exo_ctx.cal0_blank && cal0_blanking))