?? intel28f128_16x2.c
字號:
src1[0] = src[0];
src1[1] = src[1];
src1[2] = src[2];
src1[3] = src[3];
/* Flash program setup command */
Write_40_to(dest);
/* Write the value */
FWrite(dest,src1);
/* Wait for write to complete by polling RSR... */
do {
Write_70_to_base();
rsr = Read_0000_from_base();
} while (! (rsr & WSMS_H && rsr & WSMS_L));
Write_50_to_base(); /* Clear status register */
Write_ff_to_base(); /* Go to read-array mode */
if (Is_Not_Equal(dest, src1)) {
goto ewrite_again;
}
dest+=DEV_WIDTH;
src+=DEV_WIDTH;
}
/* Now that the re-programming of flash is complete, reset: */
reset = RESETFUNC();
reset();
return(0); /* won't get here */
}
/* EndIntel28f128_16x2_ewrite():
* Function place holder to determine the end of the above function.
*/
void
EndIntel28f128_16x2_ewrite(void)
{}
/* Intel28f128_16x2_lock():
*/
int
Intel28f128_16x2_lock(struct flashinfo *fdev,int snum,int operation)
{
volatile int i;
ulong add, rsr;
int sector;
add = (ulong)(fdev->base);
if (operation == FLASH_LOCKABLE)
return(1);
if (operation == FLASH_LOCKQRY) {
/* TODO: Write this */
return(0);
}
/* Not applicable for this device.
*/
if (operation == FLASH_LOCKDWN)
return(-1);
/* For this device the unlock is applied to all
* sectors, so no need to enter the loop below.
*/
if (operation == FLASH_UNLOCK) {
Write_60_to_base();
Write_d0_to_base();
/* Wait for unlock to complete by polling
* status register.
*/
do {
for(i=0;i<SR_WAIT*10;i++);
rsr = *(ulong *)add;
} while(!(rsr & WSMS));
for(i=0;i<SR_WAIT;i++);
Write_ff_to_base(); /* Go to read-array mode */
return(0);
}
/* Lock the requested sector(s):
*/
for (sector=0;sector<fdev->sectorcnt;sector++) {
if ((snum == ALL_SECTORS) || (snum == sector)) {
/* Issue the setup/lock command sequence
*/
Write_60_to(add);
Write_01_to(add);
/* Wait for lock/unlock to complete by polling
* status register.
*/
do {
for(i=0;i<SR_WAIT;i++);
rsr = *(ulong *)add;
} while(!(rsr & WSMS));
Write_ff_to_base(); /* Go to read-array mode */
}
add += fdev->sectors[sector].size;
}
return(0);
}
/* EndIntel28f128_16x2_lock():
* Function place holder to determine the end of the above function.
*/
void
EndIntel28f128_16x2_lock(void)
{
}
/* Intel28f128_16x2_type():
* Run the AUTOSELECT algorithm to retrieve the manufacturer and
* device id of the flash.
*/
int
Intel28f128_16x2_type(struct flashinfo *fdev)
{
ushort man, dev;
ulong id;
/* Issue the read configuration command: */
Write_90_to_base();
man = (ushort)Read_0000_from_base(); /* manufacturer ID */
dev = (ushort)Read_0001_from_base(); /* device ID */
id = man;
id <<= 16;
id |= dev;
fdev->id = id;
/* Issue the read array command: */
Write_ff_to_base();
return((int)(fdev->id));
}
/* EndIntel28f128_16x2_type():
* Function place holder to determine the end of the above function.
*/
void
EndIntel28f128_16x2_type(void)
{}
/**************************************************************************
**************************************************************************
*
* The remainder of the code in this file can be included if the
* target configuration is such that this 28F128 device is the only
* real flash device in the system that is to be visible to the monitor.
*
**************************************************************************
**************************************************************************
*/
#ifdef SINGLE_FLASH_DEVICE
/* FlashXXXFbuf[]:
* If FLASH_COPY_TO_RAM is defined then these arrays will contain the
* flash operation functions above. To operate on most flash devices,
* you cannot be executing out of it (there are exceptions, but
* in general, we do not assume the flash supports this). The flash
* functions are copied here, then executed through the function
* pointers established in the flashinfo structure below.
* One obvious requirement... The size of each array must be at least
* as large as the function that it will contain.
*/
#ifdef FLASH_COPY_TO_RAM
ulong FlashTypeFbuf[400];
ulong FlashEraseFbuf[400];
ulong FlashWriteFbuf[400];
ulong FlashEwriteFbuf[400];
ulong FlashLockFbuf[400];
#endif
/* FlashNamId[]:
* Used to correlate between the ID and a string representing the name
* of the flash device.
*/
struct flashdesc FlashNamId[] = {
{ INTEL28F128J, "INTEL-28F128J" },
{ 0, 0 },
};
/* This configuration is 2 side-by-side 28F128J devices.
* Each device has 128 128Kbyte sectors, so since we have 2
* in parallel, then each 32-bit sector is 256Kbytes...
*/
int SectorSizes28F128_32[] = {
0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000,
0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000,
0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000,
0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000,
0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000,
0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000,
0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000,
0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000,
0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000,
0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000,
0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000,
0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000,
0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000,
0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000,
0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000,
0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000, 0x40000,
};
struct sectorinfo sinfo128[sizeof(SectorSizes28F128_32)/sizeof(int)];
int
FlashBankInit(struct flashinfo *fbnk,int snum)
{
uchar *saddr;
int i, *sizetable, msize;
struct sectorinfo *sinfotbl;
/* Based on the flash bank ID returned, load a sector count and a */
/* sector size-information table... */
flashtype(fbnk);
switch(fbnk->id) {
case INTEL28F128J:
fbnk->sectorcnt = (sizeof(SectorSizes28F128_32)/sizeof(int));
sizetable = SectorSizes28F128_32;
break;
default:
printf("Unrecognized flashid: 0x%08lx\n",fbnk->id);
return(-1);
break;
}
/* Create the per-sector information table. The size of the table */
/* depends on the number of sectors in the device... */
if (fbnk->sectors)
free((char *)fbnk->sectors);
msize = fbnk->sectorcnt * (sizeof(struct sectorinfo));
sinfotbl = (struct sectorinfo *)malloc(msize);
if (!sinfotbl) {
printf("Can't allocate space for flash sector information\n");
return(-1);
}
fbnk->sectors = sinfotbl;
/* Using the above-determined sector count and size table, build */
/* the sector information table as part of the flash-bank structure: */
saddr = fbnk->base;
for(i=0;i<fbnk->sectorcnt;i++) {
fbnk->sectors[i].snum = snum+i;
fbnk->sectors[i].size = sizetable[i];
fbnk->sectors[i].begin = saddr;
fbnk->sectors[i].end =
fbnk->sectors[i].begin + fbnk->sectors[i].size - 1;
fbnk->sectors[i].protected = 0;
saddr += sizetable[i];
}
fbnk->end = saddr-1;
return(fbnk->sectorcnt);
}
/* FlashInit():
* Initialize data structures for each bank of flash...
*/
int
FlashInit(void)
{
int snum;
struct flashinfo *fbnk;
snum = 0;
FlashCurrentBank = 0;
#ifdef FLASH_COPY_TO_RAM
/* Copy functions to ram space... */
/* Note that this MUST be done when cache is disabled to assure that */
/* the RAM is occupied by the designated block of code. */
if (flashopload((ulong *)Intel28f128_16x2_lock,
(ulong *)EndIntel28f128_16x2_lock,
FlashLockFbuf,sizeof(FlashLockFbuf)) < 0)
return(-1);
if (flashopload((ulong *)Intel28f128_16x2_type,
(ulong *)EndIntel28f128_16x2_type,
FlashTypeFbuf,sizeof(FlashTypeFbuf)) < 0)
return(-1);
if (flashopload((ulong *)Intel28f128_16x2_erase,
(ulong *)EndIntel28f128_16x2_erase,
FlashEraseFbuf,sizeof(FlashEraseFbuf)) < 0)
return(-1);
if (flashopload((ulong *)Intel28f128_16x2_ewrite,
(ulong *)EndIntel28f128_16x2_ewrite,
FlashEwriteFbuf,sizeof(FlashEwriteFbuf)) < 0)
return(-1);
if (flashopload((ulong *)Intel28f128_16x2_write,
(ulong *)EndIntel28f128_16x2_write,
FlashWriteFbuf,sizeof(FlashWriteFbuf)) < 0)
return(-1);
#endif
fbnk = &FlashBank[0];
fbnk->base = (unsigned char *)FLASH_BANK0_BASE_ADDR;
fbnk->width = FLASH_BANK0_WIDTH;
#ifdef FLASH_COPY_TO_RAM
fbnk->fltype = (int(*)())FlashTypeFbuf; /* flashtype(). */
fbnk->flerase = (int(*)())FlashEraseFbuf; /* flasherase(). */
fbnk->flwrite = (int(*)())FlashWriteFbuf; /* flashwrite(). */
fbnk->flewrite = (int(*)())FlashEwriteFbuf; /* flashewrite(). */
fbnk->fllock = (int(*)())FlashLockFbuf; /* flashlock(). */
#else
fbnk->fltype = Intel28f128_16x2_type;
fbnk->flerase = Intel28f128_16x2_erase;
fbnk->fllock = Intel28f128_16x2_lock;
fbnk->flwrite = Intel28f128_16x2_write;
fbnk->flewrite = Intel28f128_16x2_ewrite;
#endif
snum += FlashBankInit(fbnk,snum);
sectorProtect(FLASH_PROTECT_RANGE,1);
#ifdef FLASHRAM_BASE
FlashRamInit(snum, FLASHRAM_SECTORCOUNT,
&FlashBank[FLASHRAM_BANKNUM], sinfoRAM, 0);
#endif
return(0);
}
#endif /* SINGLE_FLASH_DEVICE */
#endif /* INCLUDE_FLASH */
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