mirror of
https://github.com/ApacheThunder/omega-kernel-boot-to-nor.git
synced 2025-06-18 19:25:32 -04:00
252dfd3a6a
* Bring over updated fat lib from DE kernel. * Updated Write_SD_sectors function to include fail condition check introduced in DE's kernel. * Removed old/unused copies of fat lib. * Refactored button detection routine for skipping autoboot/triggering boot last SD list game. * Press A to boot last played game from PSRAM actually triggers now. Unfortunately it doesn't actually seem to be working right now. Previously due to how the old button detection code was setup, the press A code wasn't triggering at all. * Press B option provided in commented out code for dumping fat table. Compile with this enabled (and the related changes in EZcard_OP.c) to enable dumping fat table to SD prior to booting game. Useful for debugging fat table related stuff for custom kernels/external launchers on DS. Disabled by default as this has no practicle use for end users.
251 lines
5.8 KiB
C
251 lines
5.8 KiB
C
/*-----------------------------------------------------------------------*/
|
|
/* Low level disk I/O module SKELETON for FatFs (C)ChaN, 2019 */
|
|
/*-----------------------------------------------------------------------*/
|
|
/* If a working storage control module is available, it should be */
|
|
/* attached to the FatFs via a glue function rather than modifying it. */
|
|
/* This is an example of glue functions to attach various exsisting */
|
|
/* storage control modules to the FatFs module with a defined API. */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
#include "ff.h" /* Obtains integer types */
|
|
#include "diskio.h" /* Declarations of disk functions */
|
|
#include "../Ezcard_OP.h"
|
|
#include "../RTC.h"
|
|
/* Definitions of physical drive number for each drive */
|
|
//#define DEV_RAM 0 /* Example: Map Ramdisk to physical drive 0 */
|
|
//#define DEV_MMC 1 /* Example: Map MMC/SD card to physical drive 1 */
|
|
//#define DEV_USB 2 /* Example: Map USB MSD to physical drive 2 */
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Get Drive Status */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
DSTATUS disk_status (
|
|
BYTE pdrv /* Physical drive nmuber to identify the drive */
|
|
)
|
|
{
|
|
/*DSTATUS stat;
|
|
int result;
|
|
|
|
switch (pdrv) {
|
|
case DEV_RAM :
|
|
result = RAM_disk_status();
|
|
|
|
// translate the reslut code here
|
|
|
|
return stat;
|
|
|
|
case DEV_MMC :
|
|
result = MMC_disk_status();
|
|
|
|
// translate the reslut code here
|
|
|
|
return stat;
|
|
|
|
case DEV_USB :
|
|
result = USB_disk_status();
|
|
|
|
// translate the reslut code here
|
|
|
|
return stat;
|
|
}
|
|
return STA_NOINIT;*/
|
|
return RES_OK;
|
|
}
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Inidialize a Drive */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
DSTATUS disk_initialize (
|
|
BYTE pdrv /* Physical drive nmuber to identify the drive */
|
|
)
|
|
{
|
|
/*DSTATUS stat;
|
|
int result;
|
|
|
|
switch (pdrv) {
|
|
case DEV_RAM :
|
|
result = RAM_disk_initialize();
|
|
|
|
// translate the reslut code here
|
|
|
|
return stat;
|
|
|
|
case DEV_MMC :
|
|
result = MMC_disk_initialize();
|
|
|
|
// translate the reslut code here
|
|
|
|
return stat;
|
|
|
|
case DEV_USB :
|
|
result = USB_disk_initialize();
|
|
|
|
// translate the reslut code here
|
|
|
|
return stat;
|
|
}
|
|
return STA_NOINIT;*/
|
|
return RES_OK;
|
|
}
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Read Sector(s) */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
DRESULT disk_read (
|
|
BYTE pdrv, /* Physical drive nmuber to identify the drive */
|
|
BYTE *buff, /* Data buffer to store read data */
|
|
LBA_t sector, /* Start sector in LBA */
|
|
UINT count /* Number of sectors to read */
|
|
)
|
|
{
|
|
/*DRESULT res;
|
|
int result;
|
|
|
|
switch (pdrv) {
|
|
case DEV_RAM :
|
|
// translate the arguments here
|
|
|
|
result = RAM_disk_read(buff, sector, count);
|
|
|
|
// translate the reslut code here
|
|
|
|
return res;
|
|
|
|
case DEV_MMC :
|
|
// translate the arguments here
|
|
|
|
result = MMC_disk_read(buff, sector, count);
|
|
|
|
// translate the reslut code here
|
|
|
|
return res;
|
|
|
|
case DEV_USB :
|
|
// translate the arguments here
|
|
|
|
result = USB_disk_read(buff, sector, count);
|
|
|
|
// translate the reslut code here
|
|
|
|
return res;
|
|
}
|
|
|
|
return RES_PARERR;*/
|
|
DRESULT res;
|
|
res = Read_SD_sectors(sector, count, buff);
|
|
return res;
|
|
}
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Write Sector(s) */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
#if FF_FS_READONLY == 0
|
|
|
|
DRESULT disk_write (
|
|
BYTE pdrv, /* Physical drive nmuber to identify the drive */
|
|
const BYTE *buff, /* Data to be written */
|
|
LBA_t sector, /* Start sector in LBA */
|
|
UINT count /* Number of sectors to write */
|
|
)
|
|
{
|
|
/*DRESULT res;
|
|
int result;
|
|
|
|
switch (pdrv) {
|
|
case DEV_RAM :
|
|
// translate the arguments here
|
|
|
|
result = RAM_disk_write(buff, sector, count);
|
|
|
|
// translate the reslut code here
|
|
|
|
return res;
|
|
|
|
case DEV_MMC :
|
|
// translate the arguments here
|
|
|
|
result = MMC_disk_write(buff, sector, count);
|
|
|
|
// translate the reslut code here
|
|
|
|
return res;
|
|
|
|
case DEV_USB :
|
|
// translate the arguments here
|
|
|
|
result = USB_disk_write(buff, sector, count);
|
|
|
|
// translate the reslut code here
|
|
|
|
return res;
|
|
}
|
|
|
|
return RES_PARERR;*/
|
|
DRESULT res;
|
|
res = Write_SD_sectors(sector, count, buff);
|
|
return res;
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Miscellaneous Functions */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
DRESULT disk_ioctl (
|
|
BYTE pdrv, /* Physical drive nmuber (0..) */
|
|
BYTE cmd, /* Control code */
|
|
void *buff /* Buffer to send/receive control data */
|
|
)
|
|
{
|
|
/*DRESULT res;
|
|
int result;
|
|
|
|
switch (pdrv) {
|
|
case DEV_RAM :
|
|
|
|
// Process of the command for the RAM drive
|
|
|
|
return res;
|
|
|
|
case DEV_MMC :
|
|
|
|
// Process of the command for the MMC/SD card
|
|
|
|
return res;
|
|
|
|
case DEV_USB :
|
|
|
|
// Process of the command the USB drive
|
|
|
|
return res;
|
|
}
|
|
|
|
return RES_PARERR;*/
|
|
return RES_OK;
|
|
}
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Get omega card time Functions */
|
|
/*-----------------------------------------------------------------------*/
|
|
DWORD get_fattime (void)
|
|
{
|
|
u8 datetime[7];
|
|
rtc_enable();
|
|
rtc_get(datetime);
|
|
rtc_disenable();
|
|
return ((DWORD)(UNBCD(datetime[0])+20) << 25 | (DWORD)UNBCD(datetime[1]) << 21 | (DWORD)UNBCD(datetime[2]&0x3F) << 16 | (DWORD)UNBCD(datetime[4]&0x3F) << 11 | (DWORD)UNBCD(datetime[5]) << 5 | (DWORD)UNBCD(datetime[6]) >> 1 );
|
|
}
|
|
|