Add support for file/partition based emummc on emmc,

Add support for emuSD

fusee/program/source/fatfs/ff.h

@@ -172,8 +172,7 @@ typedef struct {
     LBA_t   bitbase;        /* Allocation bitmap base sector */
 #endif
     LBA_t   winsect;        /* Current sector appearing in the win[] */
-    BYTE    pad[4];
-    BYTE    win[FF_MAX_SS]; /* Disk access window for Directory, FAT (and file data at tiny cfg) */
+    __attribute__((aligned(8))) BYTE    win[FF_MAX_SS]; /* Disk access window for Directory, FAT (and file data at tiny cfg) */
 } FATFS;
 
 
@@ -218,7 +217,7 @@ typedef struct {
     DWORD*  cltbl;          /* Pointer to the cluster link map table (nulled on open, set by application) */
 #endif
 #if !FF_FS_TINY
-    BYTE    buf[FF_MAX_SS]; /* File private data read/write window */
+    __attribute__((aligned(8))) BYTE    buf[FF_MAX_SS]; /* File private data read/write window */
 #endif
 } FIL;
 

fusee/program/source/fatfs/fusee_diskio.cpp

@@ -16,7 +16,7 @@
 #include <exosphere.hpp>
 #include "diskio_cpp.h"
 #include "../fusee_sd_card.hpp"
-#include "../fusee_emummc.hpp"
+#include "../fusee_mmc.hpp"
 
 bool diskio_read_sd_card(void *dst, size_t size, size_t sector_index, size_t sector_count) {
     return R_SUCCEEDED(::ams::nxboot::ReadSdCard(dst, size, sector_index, sector_count));
@@ -27,9 +27,10 @@ bool diskio_write_sd_card(size_t sector_index, size_t sector_count, const void *
 }
 
 bool diskio_read_system(void *dst, size_t size, size_t sector_index, size_t sector_count) {
-    return false;
+    return R_SUCCEEDED(::ams::nxboot::ReadMmc(dst, size, ::ams::sdmmc::MmcPartition::MmcPartition_UserData, sector_index, sector_count));
 }
 
 bool diskio_write_system(size_t sector_index, size_t sector_count, const void *src, size_t size) {
+    /* Don't allow writes to eMMC GPP partition */
     return false;
 }