[Stock] Add cleaner stock

[Stock]
fss0={sd path}
stock=1

Can now work for both older and new HOS versions.

- <= 6.2.0 loads nothing and removes kernel patching.
- >= 7.0.0 loads exo, wb and removes kernel patching.

This requires that fss0 {sd path} is valid. Otherwise it will fail on ini cfg parsing.

If <= 6.2.0 and no FSS0
[Stock]
stock=1

will provide a cleaner stock with no kernel patching.

README.md

@@ -58,6 +58,7 @@ There are four possible type of entries. "**[ ]**": Boot entry, "**{ }**": Capti
 | fullsvcperm=1      | Disables SVC verification (full services permission)       |
 | debugmode=1        | Enables Debug mode. Obsolete when used with exosphere as secmon. |
 | atmosphere=1       | Enables Atmosphère patching                                |
+| stock=1            | Disables unneeded kernel patching when running stock or semi-stock. |
 | payload={SD path}  | Payload launching. Tools, Linux, CFW bootloaders, etc.     |
 
 **Note1**: When using the wildcard (`/*`) with `kip1` you can still use the normal `kip1` after that to load extra signle kips.

bootloader/hos/fss.c

@@ -60,9 +60,24 @@ typedef struct _fss_content_t
 int parse_fss(launch_ctxt_t *ctxt, const char *value)
 {
 	FIL fp;
+
+	bool stock = false;
+
+	LIST_FOREACH_ENTRY(ini_kv_t, kv, &ctxt->cfg->kvs, link)
+	{
+		if (!strcmp("stock", kv->key))
+			if (kv->val[0] == '1')
+				stock = true;
+	}
+
+	if (stock && ctxt->pkg1_id->kb <= KB_FIRMWARE_VERSION_620)
+		return 1;
+
 	if (f_open(&fp, value, FA_READ) != FR_OK)
 		return 0;
 
+	ctxt->atmosphere = true;
+
 	void *fss = malloc(f_size(&fp));
 	// Read header.
 	f_read(&fp, fss, 0x400, NULL);
@@ -89,7 +104,9 @@ int parse_fss(launch_ctxt_t *ctxt, const char *value)
 			// Load content to launch context.
 			switch (curr_fss_cnt[i].type)
 			{
-			case CNT_TYPE_KIP:;
+			case CNT_TYPE_KIP:
+				if (stock)
+					continue;
 				merge_kip_t *mkip1 = (merge_kip_t *)malloc(sizeof(merge_kip_t));
 				mkip1->kip1 = content;
 				list_append(&ctxt->kip1_list, &mkip1->link);

bootloader/hos/hos.c

@@ -369,6 +369,7 @@ out:;
 
 static void _free_launch_components(launch_ctxt_t *ctxt)
 {
+	ini_free_section(ctxt->cfg);
 	free(ctxt->keyblob);
 	free(ctxt->pkg1);
 	free(ctxt->pkg2);
@@ -388,20 +389,25 @@ int hos_launch(ini_sec_t *cfg)
 	memset(&tsec_ctxt, 0, sizeof(tsec_ctxt_t));
 	list_init(&ctxt.kip1_list);
 
+	ctxt.cfg = cfg;
+
 	if (!gfx_con.mute)
 		gfx_clear_grey(&gfx_ctxt, 0x1B);
 	gfx_con_setpos(&gfx_con, 0, 0);
 
-	// Try to parse config if present.
-	if (cfg && !parse_boot_config(&ctxt, cfg))
-		return 0;
-
 	gfx_printf(&gfx_con, "Initializing...\n\n");
 
 	// Read package1 and the correct keyblob.
 	if (!_read_emmc_pkg1(&ctxt))
 		return 0;
 
+	// Try to parse config if present.
+	if (ctxt.cfg && !parse_boot_config(&ctxt))
+	{
+		EPRINTF("Wrong ini cfg or missing files!");
+		return 0;
+	}
+
 	// Check if fuses lower than 4.0.0 and if yes apply NO Gamecard patch.
 	if (h_cfg.autonogc && !(fuse_read_odm(7) & ~0xF) && ctxt.pkg1_id->kb >= KB_FIRMWARE_VERSION_400)
 		config_kip1patch(&ctxt, "nogc");
@@ -507,7 +513,7 @@ int hos_launch(ini_sec_t *cfg)
 		ctxt.kernel = pkg2_hdr->data;
 		ctxt.kernel_size = pkg2_hdr->sec_size[PKG2_SEC_KERNEL];
 
-		if (ctxt.svcperm || ctxt.debugmode || ctxt.atmosphere)
+		if (!ctxt.stock && (ctxt.svcperm || ctxt.debugmode || ctxt.atmosphere))
 		{
 			u32 kernel_crc32 = crc32c(ctxt.kernel, ctxt.kernel_size);
 			ctxt.pkg2_kernel_id = pkg2_identify(kernel_crc32);
@@ -610,7 +616,7 @@ int hos_launch(ini_sec_t *cfg)
 
 	// Config Exosphère if booting full Atmosphère.
 	if (ctxt.atmosphere && ctxt.secmon)
-		config_exosphere(ctxt.pkg1_id->id, ctxt.pkg1_id->kb, (void *)ctxt.pkg1_id->warmboot_base, ctxt.pkg1);
+		config_exosphere(ctxt.pkg1_id->id, ctxt.pkg1_id->kb, (void *)ctxt.pkg1_id->warmboot_base, ctxt.pkg1, ctxt.stock);
 
 	// Unmount SD card.
 	sd_unmount();
@@ -640,7 +646,6 @@ int hos_launch(ini_sec_t *cfg)
 	secmon_mb->out = 0;
 
 	// Free allocated memory.
-	ini_free_section(cfg);
 	_free_launch_components(&ctxt);
 
 	// Disable display. This must be executed before secmon to provide support for all fw versions.

bootloader/hos/hos.h

@@ -58,7 +58,10 @@ typedef struct _launch_ctxt_t
 
 	bool svcperm;
 	bool debugmode;
+	bool stock;
 	bool atmosphere;
+
+	ini_sec_t *cfg;
 } launch_ctxt_t;
 
 typedef struct _merge_kip_t

bootloader/hos/hos_config.c

@@ -176,6 +176,16 @@ static int _config_debugmode(launch_ctxt_t *ctxt, const char *value)
 	return 1;
 }
 
+static int _config_stock(launch_ctxt_t *ctxt, const char *value)
+{
+	if (*value == '1')
+	{
+		DPRINTF("Disabled all patching\n");
+		ctxt->stock = true;
+	}
+	return 1;
+}
+
 static int _config_atmosphere(launch_ctxt_t *ctxt, const char *value)
 {
 	if (*value == '1')
@@ -205,14 +215,15 @@ static const cfg_handler_t _config_handlers[] = {
 	{ "kip1patch", config_kip1patch },
 	{ "fullsvcperm", _config_svcperm },
 	{ "debugmode", _config_debugmode },
+	{ "stock", _config_stock },
 	{ "atmosphere", _config_atmosphere },
 	{ "fss0", _config_fss },
 	{ NULL, NULL },
 };
 
-int parse_boot_config(launch_ctxt_t *ctxt, ini_sec_t *cfg)
+int parse_boot_config(launch_ctxt_t *ctxt)
 {
-	LIST_FOREACH_ENTRY(ini_kv_t, kv, &cfg->kvs, link)
+	LIST_FOREACH_ENTRY(ini_kv_t, kv, &ctxt->cfg->kvs, link)
 	{
 		for(u32 i = 0; _config_handlers[i].key; i++)
 		{

bootloader/hos/hos_config.h

@@ -19,7 +19,7 @@
 
 #include "hos.h"
 
-int parse_boot_config(launch_ctxt_t *ctxt, ini_sec_t *cfg);
+int parse_boot_config(launch_ctxt_t *ctxt);
 int config_kip1patch(launch_ctxt_t *ctxt, const char *value);
 
 #endif

bootloader/hos/secmon_exo.c

@@ -48,7 +48,7 @@ typedef struct _atm_meta_t
 #define  EXO_FLAG_DBG_PRIV  (1 << 1)
 #define  EXO_FLAG_DBG_USER  (1 << 2)
 
-void config_exosphere(const char *id, u32 kb, void *warmboot, void *pkg1)
+void config_exosphere(const char *id, u32 kb, void *warmboot, void *pkg1, bool stock)
 {
 	u32 exoFwNo = 0;
 	u32 exoFlags = 0;
@@ -75,7 +75,8 @@ void config_exosphere(const char *id, u32 kb, void *warmboot, void *pkg1)
 	if (kb == KB_FIRMWARE_VERSION_620)
 		exoFlags |= EXO_FLAG_620_KGN;
 
-	// To avoid problems, make private debug mode always on.
+	// To avoid problems, make private debug mode always on if not semi-stock.
+	if (!stock)
 		exoFlags |= EXO_FLAG_DBG_PRIV;
 
 	// Set mailbox values.

bootloader/hos/secmon_exo.h

@@ -19,6 +19,6 @@
 
 #include "../utils/types.h"
 
-void config_exosphere(const char *id, u32 kb, void *warmboot, void *pkg1);
+void config_exosphere(const char *id, u32 kb, void *warmboot, void *pkg1, bool stock);
 
 #endif