add emusd.c

bootloader/storage/emusd.c

@@ -0,0 +1,70 @@
+#include "emusd.h"
+#include <bdk.h>
+#include <string.h>
+#include <utils/ini.h>
+
+emusd_cfg_t emu_sd_cfg = {0};
+
+void emusd_load_cfg()
+{
+	emu_sd_cfg.enabled = 0;
+	emu_sd_cfg.fs_ver  = 0;
+	emu_sd_cfg.id      = 0;
+	emu_sd_cfg.sector  = 0;
+	if(!emu_sd_cfg.path) {
+		emu_sd_cfg.path = (char*)malloc(0x200);
+	}
+	if(emu_sd_cfg.emummc_file_based_path){
+		emu_sd_cfg.emummc_file_based_path = (char*)malloc(0x200);
+	}
+
+	LIST_INIT(ini_sections);
+	if(ini_parse(&ini_sections, "emuSD/emusd.ini", false))
+	{
+		LIST_FOREACH_ENTRY(ini_sec_t, ini_sec, &ini_sections, link)
+		{
+			if(ini_sec->type == INI_CHOICE)
+			{
+				if(strcmp(ini_sec->name, "emusd")){
+					continue;
+				}
+
+				LIST_FOREACH_ENTRY(ini_kv_t, kv, &ini_sec->kvs, link)
+				{
+					if(!strcmp(kv->key, "enabled")){
+						emu_sd_cfg.enabled = atoi(kv->val);
+					} else if(!strcmp(kv->key, "sector")){
+						emu_sd_cfg.sector = strtol(kv->val, NULL, 16);
+					}
+				}
+				break;
+			}
+		}
+	}
+}
+
+bool emusd_set_path(char *path) {
+	FIL fp;
+	bool found = false;
+	char sd_path[0x80];
+
+	// TODO: use emu_sd.file_path  instead
+	strcpy(sd_path, path);
+	strcat(sd_path, "/raw_emmc_based");
+
+	if(!f_open(&fp, sd_path, FA_READ))
+	{
+		if(!f_read(&fp, &emu_sd_cfg.sector, 4, NULL)){
+			if(emu_sd_cfg.sector){
+				found = true;
+				emu_sd_cfg.enabled = 4;
+				goto out;
+			}
+		}
+	}
+
+	// TODO: file based / SD partition based support
+
+	out:
+	return found;
+}

bootloader/storage/emusd.h

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2019-2021 CTCaer
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _EMUSD_H
+#define _EMUSD_H
+
+#include <bdk.h>
+
+typedef struct _emusd_cfg_t
+{
+	int   enabled;
+	u64   sector;
+	u32   id;
+	char *path;
+	// Internal.
+	int fs_ver;
+	char *emummc_file_based_path;
+
+} emusd_cfg_t;
+
+extern emusd_cfg_t emu_sd_cfg;
+
+void emusd_load_cfg();
+bool emusd_set_path(char *path);
+int  emusd_storage_init_mmc();
+int  emusd_storage_end();
+int  emusd_storage_read(u32 sector, u32 num_sectors, void *buf);
+int  emusd_storage_write(u32 sector, u32 num_sectors, void *buf);
+sdmmc_storage_t *emusd_get_storage();
+
+#endif