📄 fat.c
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/*******************************************************************/
//this FAT.c file is the file allocation table system program
//the physical format unit is 8Meg bit
//SMC file system format
//
//make by mikal 12/22/2003
/*******************************************************************/
#include "general.h"
UWord16 *MBR_Databuffer= ( UWord16 *)0x5000;
UWord32 Fat_Address ;
UWord32 Fat_Copyaddress ;
UWord32 PBR_Partstart_Add;
UWord32 RootDir_Add;
UWord32 DataAera_Add;
#if(NandFlash_256MB==3)
extern UWord16 MBR_PartENtryData[512]=
{
0xfa, 0x33, 0xc0, 0x8e,
0xd0, 0xbc, 0x00, 0x7c,
0x8b, 0xf4, 0x50, 0x07,
0x50, 0x1f, 0xfb, 0xfc,
0xbf, 0x00, 0x06, 0xb9,
0x00, 0x01, 0xf2, 0xa5,
0xea, 0x1d, 0x06, 0x00,
0x00, 0xbe, 0xbe, 0x07,
0xb3, 0x04, 0x80, 0x3c,
0x80, 0x74, 0x0e, 0x80,
0x3c, 0x00, 0x75, 0x1c,
0x83, 0xc6, 0x10, 0xfe,
0xcb, 0x75, 0xef, 0xcd,
0x18, 0x8b, 0x14, 0x8b,
0x4c, 0x02, 0x8b, 0xee,
0x83, 0xc6, 0x10, 0xfe,
0xcb, 0x74, 0x1a, 0x80,
0x3c, 0x00, 0x74, 0xf4,
0xbe, 0x8b, 0x06, 0xac,
0x3c, 0x00, 0x74, 0x0b,
0x56, 0xbb, 0x07, 0x00,
0xb4, 0x0e, 0xcd, 0x10,
0x5e, 0xeb, 0xf0, 0xeb,
0xfe, 0xbf, 0x05, 0x00,
0xbb, 0x00, 0x7c, 0xb8,
0x01, 0x02, 0x57, 0xcd,
0x13, 0x5f, 0x73, 0x0c,
0x33, 0xc0, 0xcd, 0x13,
0x4f, 0x75, 0xed, 0xbe,
0xa3, 0x06, 0xeb, 0xd3,
0xbe, 0xc2, 0x06, 0xbf,
0xfe, 0x7d, 0x81, 0x3d,
0x55, 0xaa, 0x75, 0xc7,
0x8b, 0xf5, 0xea, 0x00,
0x7c, 0x00, 0x00, 0x49,
0x6e, 0x76, 0x61, 0x6c,
0x69, 0x64, 0x20, 0x70,
0x61, 0x72, 0x74, 0x69,
0x74, 0x69, 0x6f, 0x6e,
0x20, 0x74, 0x61, 0x62,
0x6c, 0x65, 0x00, 0x45,
0x72, 0x72, 0x6f, 0x72,
0x20, 0x6c, 0x6f, 0x61,
0x64, 0x69, 0x6e, 0x67,
0x20, 0x6f, 0x70, 0x65,
0x72, 0x61, 0x74, 0x69,
0x6e, 0x67, 0x20, 0x73,
0x79, 0x73, 0x74, 0x65,
0x6d, 0x00, 0x4d, 0x69,
0x73, 0x73, 0x69, 0x6e,
0x67, 0x20, 0x6f, 0x70,
0x65, 0x72, 0x61, 0x74,
0x69, 0x6e, 0x67, 0x20,
0x73, 0x79, 0x73, 0x74,
0x65, 0x6d, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, //
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, //1
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, //2
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,//3
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,//4
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,//5
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,//6
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,//7
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,//8
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,//9
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,//10
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,//11
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,//12
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,//13
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00,
0x80, //14//16bytes Entry partition
0x01,
0x01,
0x00,
0x01,//0x04, // Partition Type system ID
0x03, // end Head
0x00,
0xf9, // 250 head
0x10, // start sector LSB
0x00, // |
0x00, // |
0x00, // MSB
0x3e, // Number Sector LSB
0x70, // |
0x00, // |
0x00, // MSB
0x00, 0x00,//15
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,//16
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,//17
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x55, 0xaa,//18
};
/*******************************************************************/
extern UWord16 PBR_FileData[]=
{
0xEB, // JMP instruction to PBR code
0x3c, //
0x90, //
'M',//0x4d, //
'S',//0x53, //
'-',//0x44, //
'D',//0x4f, //
'O',//0x53, //
'S',//0x35, //
'5',//0x2e,
'0',//0x30,
0x00,
0x02, // BytesSector 0X200 bytes
0x08, //SectorPerCluster
0x01,
0x00,
0x02, //
0x00, //256 directory
0x01,//0x10, //
0x3e, //
0x70, // data total sector
0xF8, // Media types
0x6, // NumSector/FAT
0x00, //
0x10, // NumSector/Track
0x00,
0x04, // NumHead/Cylinder
0x00,
0x10, // Hide 4 bytes
0x00,
0x00,
0x00,
0x00, // Number Sector LSB
0x00, // |
0x00, // |
0x00, // MSB
0x00,
0x00,
0x29, //
0x77,
0xE2,//
0xCB,
0x94, //
0x00, //
0x00, //
0x00,
0x00,
0x00,
0x00, //
0x00,
0x00,
0x00,
0x00, //
0x00, //
'F',
'A',
'T',
'1', //
'2',
0x20,
0x20,
0x20,
0x33 ,0xc9 ,
0x8e, 0xd1, 0xbc, 0xfc, 0x7b, 0x16, 0x07, 0xbd,
0x78, 0x00, 0xc5, 0x76, 0x00, 0x1e, 0x56, 0x16,
0x55, 0xbf, 0x22, 0x05, 0x89, 0x7e, 0x00, 0x89,
0x4e, 0x02, 0xb1, 0x0b, 0xfc, 0xf3, 0xa4, 0x06,
0x1f, 0xbd, 0x00, 0x7c, 0xc6, 0x45, 0xfe, 0x0f,
0x38, 0x4e, 0x24, 0x7d, 0x20, 0x8b, 0xc1, 0x99,
0xe8, 0x7e, 0x01, 0x83, 0xeb, 0x3a, 0x66, 0xa1,
0x1c, 0x7c, 0x66, 0x3b, 0x07, 0x8a, 0x57, 0xfc,
0x75, 0x06, 0x80, 0xca, 0x02, 0x88, 0x56, 0x02,
0x80, 0xc3, 0x10, 0x73, 0xed, 0x33, 0xc9, 0xfe, //10
0x06, 0xd8, 0x7d, 0x8a, 0x46, 0x10, 0x98, 0xf7,
0x66, 0x16, 0x03, 0x46, 0x1c, 0x13, 0x56, 0x1e,
0x03, 0x46, 0x0e, 0x13, 0xd1, 0x8b, 0x76, 0x11,
0x60, 0x89, 0x46, 0xfc, 0x89, 0x56, 0xfe, 0xb8,
0x20, 0x00, 0xf7, 0xe6, 0x8b, 0x5e, 0x0b, 0x03,
0xc3, 0x48, 0xf7, 0xf3, 0x01, 0x46, 0xfc, 0x11,
0x4e, 0xfe, 0x61, 0xbf, 0x00, 0x07, 0xe8, 0x28,
0x01, 0x72, 0x3e, 0x38, 0x2d, 0x74, 0x17, 0x60,
0xb1, 0x0b, 0xbe, 0xd8, 0x7d, 0xf3, 0xa6, 0x61,
0x74, 0x3d, 0x4e, 0x74, 0x09, 0x83, 0xc7, 0x20, //20
0x3b, 0xfb, 0x72, 0xe7, 0xeb, 0xdd, 0xfe, 0x0e,
0xd8, 0x7d, 0x7b, 0xa7, 0xbe, 0x7f, 0x7d, 0xac,
0x98, 0x03, 0xf0, 0xac, 0x98, 0x40, 0x74, 0x0c,
0x48, 0x74, 0x13, 0xb4, 0x0e, 0xbb, 0x07, 0x00,
0xcd, 0x10, 0xeb, 0xef, 0xbe, 0x82, 0x7d, 0xeb,
0xe6, 0xbe, 0x80, 0x7d, 0xeb, 0xe1, 0xcd, 0x16,
0x5e, 0x1f, 0x66, 0x8f, 0x04, 0xcd, 0x19, 0xbe,
0x81, 0x7d, 0x8b, 0x7d, 0x1a, 0x8d, 0x45, 0xfe,
0x8a, 0x4e, 0x0d, 0xf7, 0xe1, 0x03, 0x46, 0xfc,
0x13, 0x56, 0xfe, 0xb1, 0x04, 0xe8, 0xc2, 0x00, //30
0x72, 0xd7, 0xea, 0x00, 0x02, 0x70, 0x00, 0x52,
0x50, 0x06, 0x53, 0x6a, 0x01, 0x6a, 0x10, 0x91,
0x8b, 0x46, 0x18, 0xa2, 0x26, 0x05, 0x96, 0x92,
0x33, 0xd2, 0xf7, 0xf6, 0x91, 0xf7, 0xf6, 0x42,
0x87, 0xca, 0xf7, 0x76, 0x1a, 0x8a, 0xf2, 0x8a,
0xe8, 0xc0, 0xcc, 0x02, 0x0a, 0xcc, 0xb8, 0x01,
0x02, 0x80, 0x7e, 0x02, 0x0e, 0x75, 0x04, 0xb4,
0x42, 0x8b, 0xf4, 0x8a, 0x56, 0x24, 0xcd, 0x13,
0x61, 0x61, 0x72, 0x0a, 0x40, 0x75, 0x01, 0x42,
0x03, 0x5e, 0x0b, 0x49, 0x75, 0x77, 0xc3, 0x03, //40
0x18, 0x01, 0x27, 0x0d, 0x0a, 0x49, 0x6e, 0x76,
0x61, 0x6c, 0x69, 0x64, 0x20, 0x73, 0x79, 0x73,
0x74, 0x65, 0x6d, 0x20, 0x64, 0x69, 0x73, 0x6b,
0xff, 0x0d, 0x0a, 0x44, 0x69, 0x73, 0x6b, 0x20,
0x49, 0x2f, 0x4f, 0x20, 0x65, 0x72, 0x72, 0x6f,
0x72, 0xff, 0x0d, 0x0a, 0x52, 0x65, 0x70, 0x6c,
0x61, 0x63, 0x65, 0x20, 0x74, 0x68, 0x65, 0x20,
0x64, 0x69, 0x73, 0x6b, 0x2c, 0x20, 0x61, 0x6e,
0x64, 0x20, 0x74, 0x68, 0x65, 0x6e, 0x20, 0x70,
0x72, 0x65, 0x73, 0x73, 0x20, 0x61, 0x6e, 0x79, //50
0x20, 0x6b, 0x65, 0x79, 0x0d, 0x0a, 0x00, 0x00,
0x49, 0x4f, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
0x53, 0x59, 0x53, 0x4d, 0x53, 0x44, 0x4f, 0x53,
0x20, 0x20, 0x20, 0x53, 0x59, 0x53, 0x7f, 0x01,
0x00, 0x41, 0xbb, 0x00, 0x07, 0x60, 0x66, 0x6a,
0x00, 0xe9, 0x3b, 0xff, 0x00, 0x00, 0x55, 0xaa,//56
};
#endif
#if(0)
UWord16 G_RootDir_Data[]=
{
/* 0xe5, 0xb0, 0x65, 0xfa, 0x5e, 0x87, 0x65, 0xf6,
0x4e, 0x39, 0x59, 0x0f, 0x00, 0x75, 0x00, 0x00,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff,
0xe5, 0xc2, 0xbd, 0xa8, 0xce, 0xc4, 0x7e, 0x31,
0x20, 0x20, 0x20, 0x10, 0x20, 0x20, 0x20, 0x20,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x9f, 0x2f, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
*/
0x41, 0x47, 0x00, 0x6f,0x00, 0x6c, 0x00, 0x64,
0x00, 0x69, 0x00, 0x0f,0x00, 0x6a, 0x6e, 0x00, //DCIM
0x66, 0x00, 0x6f, 0x00,0x00, 0x00, 0xff, 0xff,
0xff, 0xff, 0x00, 0x00,0xff, 0xff, 0xff, 0xff,
0x47, 0x4f, 0x4c, 0x44,0x49, 0x4e, 0x46, 0x4f,
0x20, 0x20, 0x20, 0x10,0x00, 0xbe, 0x88, 0x7e, //DCIM
0x27, 0x30, 0x27, 0x30,0x00, 0x00, 0x89, 0x7e,
0x27, 0x30, 0x02, 0x00,0x00, 0x00, 0x00, 0x00,
};
UWord16 G_DataArea[]=
{
0x2e, 0x20, 0x20, 0x20,0x20, 0x20, 0x20, 0x20,
0x20, 0x20, 0x20, 0x10,0x00, 0xbe, 0x88, 0x7e, //DCIM
0x27, 0x30, 0x27, 0x30,0x00, 0x00, 0x89, 0x7e,
0x27, 0x30, 0x02, 0x00,0x00, 0x00, 0x00, 0x00,
0x2e, 0x2e, 0x20, 0x20,0x20, 0x20, 0x20, 0x20,
0x20, 0x20, 0x20, 0x10,0x00, 0xbe, 0x88, 0x7e, //DCIM
0x27, 0x30, 0x27, 0x30,0x00, 0x00, 0x89, 0x7e,
0x27, 0x30, 0x00, 0x00,0x00, 0x00, 0x00, 0x00,
0x41, 0x4d, 0x00, 0x69, 0x00, 0x6b, 0x00, 0x61,
0x00, 0x6c, 0x00, 0x0f, 0x00, 0xf4, 0x00, 0x00,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff,
0x4d, 0x49, 0x4b, 0x41, 0x4c, 0x20, 0x20, 0x20,
0x20, 0x20, 0x20, 0x10, 0x00, 0x2e, 0x8e, 0x7e, //DCIM
0x27, 0x30, 0x27, 0x30, 0x00, 0x00, 0x8f, 0x7e,
0x27, 0x30, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00,
};
UWord16 G_SunDir_Data[]=
{
0x2e, 0x20, 0x20, 0x20,0x20, 0x20, 0x20, 0x20,
0x20, 0x20, 0x20, 0x10,0x00, 0x2e, 0x8e, 0x7e, //DCIM
0x27, 0x30, 0x27, 0x30, 0x00, 0x00, 0x8f, 0x7e,
0x27, 0x30, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00,
0x2e, 0x2e, 0x20, 0x20,0x20, 0x20, 0x20, 0x20,
0x20, 0x20, 0x20, 0x10,0x00, 0x2e, 0x8e, 0x7e, //DCIM
0x27, 0x30, 0x27, 0x30, 0x00, 0x00, 0x8f, 0x7e,
0x27, 0x30, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
} ;
#endif
//*****************************************************************************
/*++
Routine Description:
process FAT MBR data
Arguments:
none
Return Value:
none
--*/
void FAT12_MBRDataSet(void)
{
UWord32 i;// ,j;
// for(i=0;i<0xbfff;i++)
for(i=3;i<=511;i++)
{
//MBR_Databuffer[i]=0;
G_NFlash_DataBuff[i]=0x00;
}
G_NFlash_DataBuff[0]=0xf8;
G_NFlash_DataBuff[1]=0xff;
G_NFlash_DataBuff[2]=0xff;
// for(i=0;i<=511;i++)
{
// MBR_Databuffer[i]=MBR_PartENtryData[i];
Write_NFlash_Sector(0,512,MBR_PartENtryData,K_NFlash_WR_Var);//block page0
}
// j=0;
PBR_Partstart_Add = 16*K_FAT12_SectorSize;
Fat_Address = 17*K_FAT12_SectorSize;
Fat_Copyaddress = 23*K_FAT12_SectorSize;
RootDir_Add =29*K_FAT12_SectorSize;
DataAera_Add =45*K_FAT12_SectorSize;
// for(i=PBR_Partstart_Add;i<Fat_Address;i++)
{
//MBR_Databuffer[i]=PBR_FileData[j];
Write_NFlash_Sector(16,512,PBR_FileData,K_NFlash_WR_Var);
// j++;
}
//MBR_Databuffer[Fat_Address]=0xf8; // fat start
//MBR_Databuffer[Fat_Address+1]=0xff;
//MBR_Databuffer[Fat_Address+2]=0xff;
Write_NFlash_Sector(17,512,G_NFlash_DataBuff,K_NFlash_WR_Var);
//MBR_Databuffer[Fat_Copyaddress]=0xf8; // fat start
//MBR_Databuffer[Fat_Copyaddress+1]=0xff;
//MBR_Databuffer[Fat_Copyaddress+2]=0xff;
Write_NFlash_Sector(23,512,G_NFlash_DataBuff,K_NFlash_WR_Var);
for(i=0;i<=511;i++)
{
G_NFlash_DataBuff[i]=0x00;
}
for(i=29;i<=1000;i++)
{
Write_NFlash_Sector(i,512,G_NFlash_DataBuff,K_NFlash_WR_Var);
}
}
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