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Use more space for N3DS RAMdrive

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This commit is contained in:
d0k3 2016-05-02 11:22:49 +02:00
parent 89cca90447
commit e3e8b40061
1 changed files with 23 additions and 10 deletions
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33
source/fatfs/image.c
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@ -1,19 +1,25 @@
#include "image.h" #include "image.h"
#include "platform.h"
#include "fatfs/ff.h" #include "fatfs/ff.h"
#define RAMDRV_BUFFER ((u8*)0x22200000) #define RAMDRV_BUFFER_O3DS ((u8*)0x22200000) // in O3DS FCRAM
#define RAMDRV_SIZE (0x01C00000) // 28MB #define RAMDRV_SIZE_O3DS (0x01C00000) // 28MB
#define RAMDRV_BUFFER_N3DS ((u8*)0x28000000) // in N3DS FCRAM
#define RAMDRV_SIZE_N3DS (0x08000000) // 128MB
FIL mount_file; static u8* ramdrv_buffer = NULL;
u32 mount_state = 0; static u32 ramdrv_size = 0;
static FIL mount_file;
static u32 mount_state = 0;
int ReadImageSectors(u8* buffer, u32 sector, u32 count) { int ReadImageSectors(u8* buffer, u32 sector, u32 count) {
UINT bytes_read; UINT bytes_read;
UINT ret; UINT ret;
if (!count) return -1; if (!count) return -1;
if (mount_state == IMG_RAMDRV) { if (mount_state == IMG_RAMDRV) {
if ((sector + count) * 0x200 > RAMDRV_SIZE) return -1; if ((sector + count) * 0x200 > ramdrv_size) return -1;
memcpy(buffer, RAMDRV_BUFFER + (sector * 0x200), count * 0x200); memcpy(buffer, ramdrv_buffer + (sector * 0x200), count * 0x200);
return 0; return 0;
} }
if (!mount_state) return FR_INVALID_OBJECT; if (!mount_state) return FR_INVALID_OBJECT;
@ -30,8 +36,8 @@ int WriteImageSectors(const u8* buffer, u32 sector, u32 count) {
UINT ret; UINT ret;
if (!count) return -1; if (!count) return -1;
if (mount_state == IMG_RAMDRV) { if (mount_state == IMG_RAMDRV) {
if ((sector + count) * 0x200 > RAMDRV_SIZE) return -1; if ((sector + count) * 0x200 > ramdrv_size) return -1;
memcpy(RAMDRV_BUFFER + (sector * 0x200), buffer, count * 0x200); memcpy(ramdrv_buffer + (sector * 0x200), buffer, count * 0x200);
return 0; return 0;
} }
if (!mount_state) return FR_INVALID_OBJECT; if (!mount_state) return FR_INVALID_OBJECT;
@ -47,7 +53,7 @@ int SyncImage(void) {
} }
u64 GetMountSize(void) { u64 GetMountSize(void) {
return (mount_state == IMG_RAMDRV) ? RAMDRV_SIZE : return (mount_state == IMG_RAMDRV) ? ramdrv_size :
mount_state ? f_size(&mount_file) : 0; mount_state ? f_size(&mount_file) : 0;
} }
@ -88,7 +94,14 @@ u32 IdentifyImage(const char* path) {
u32 MountRamDrive(void) { u32 MountRamDrive(void) {
if (mount_state && (mount_state != IMG_RAMDRV)) if (mount_state && (mount_state != IMG_RAMDRV))
f_close(&mount_file); f_close(&mount_file);
if (GetUnitPlatform() == PLATFORM_3DS) {
ramdrv_buffer = RAMDRV_BUFFER_O3DS;
ramdrv_size = RAMDRV_SIZE_O3DS;
} else {
ramdrv_buffer = RAMDRV_BUFFER_N3DS;
ramdrv_size = RAMDRV_SIZE_N3DS;
}
return (mount_state = IMG_RAMDRV); return (mount_state = IMG_RAMDRV);
} }