/*-----------------------------------------------------------------------
*/
-unsigned long
+unsigned long
flash_init (void)
{
volatile immap_t *immap = (immap_t *)CFG_IMMR;
volatile memctl8xx_t *memctl = &immap->im_memctl;
unsigned long size_b0;
int i;
-
+
/* Init: no FLASHes known */
- for (i=0; i<CFG_MAX_FLASH_BANKS; ++i)
+ for (i=0; i<CFG_MAX_FLASH_BANKS; ++i)
{
flash_info[i].flash_id = FLASH_UNKNOWN;
}
-
+
/* Static FLASH Bank configuration here - FIXME XXX */
-
- size_b0 = flash_get_size ((volatile unsigned char *)FLASH_BASE0_PRELIM,
+
+ size_b0 = flash_get_size ((volatile unsigned char *)FLASH_BASE0_PRELIM,
&flash_info[0]);
-
- if ( flash_info[0].flash_id == FLASH_UNKNOWN )
+
+ if ( flash_info[0].flash_id == FLASH_UNKNOWN )
{
printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
size_b0, size_b0<<20);
}
-
+
/* Remap FLASH according to real size */
memctl->memc_or0 = CFG_OR_TIMING_FLASH | (-size_b0 & OR_AM_MSK);
memctl->memc_br0 = (CFG_FLASH_BASE & BR_BA_MSK) | BR_MS_GPCM | BR_PS_8 | BR_V;
-
+
/* Re-do sizing to get full correct info */
- size_b0 = flash_get_size ((volatile unsigned char *)CFG_FLASH_BASE,
+ size_b0 = flash_get_size ((volatile unsigned char *)CFG_FLASH_BASE,
&flash_info[0]);
-
+
flash_get_offsets (CFG_FLASH_BASE, &flash_info[0]);
-
+
#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
/* monitor protection ON by default */
flash_protect (FLAG_PROTECT_SET,
CFG_MONITOR_BASE,
- CFG_MONITOR_BASE + CFG_MONITOR_LEN-1,
+ CFG_MONITOR_BASE + monitor_flash_len-1,
&flash_info[0]);
#endif
-
+
#ifdef CFG_ENV_IS_IN_FLASH
/* ENV protection ON by default */
flash_protect(FLAG_PROTECT_SET,
#endif
flash_info[0].size = size_b0;
-
+
return (size_b0);
}
/*-----------------------------------------------------------------------
*/
-static void
-flash_get_offsets (ulong base,
+static void
+flash_get_offsets (ulong base,
flash_info_t *info)
{
int i;
#define SECTOR_64KB 0x00010000
/* set up sector start adress table */
- for (i = 0; i < info->sector_count; i++)
+ for (i = 0; i < info->sector_count; i++)
{
info->start[i] = base + (i * SECTOR_64KB);
}
/*-----------------------------------------------------------------------
*/
-void
+void
flash_print_info (flash_info_t *info)
{
int i;
-
- if ( info->flash_id == FLASH_UNKNOWN )
+
+ if ( info->flash_id == FLASH_UNKNOWN )
{
printf ("missing or unknown FLASH type\n");
return;
}
- switch ( info->flash_id & FLASH_VENDMASK )
+ switch ( info->flash_id & FLASH_VENDMASK )
{
case FLASH_MAN_AMD: printf ("AMD "); break;
case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
case FLASH_MAN_STM: printf ("STM (Thomson) "); break;
default: printf ("Unknown Vendor "); break;
}
-
- switch ( info->flash_id & FLASH_TYPEMASK )
+
+ switch ( info->flash_id & FLASH_TYPEMASK )
{
case FLASH_AM040: printf ("AM29F040 (4 Mbits)\n");
break;
default: printf ("Unknown Chip Type\n");
break;
}
-
- printf (" Size: %ld KB in %d Sectors\n",
+
+ printf (" Size: %ld KB in %d Sectors\n",
info->size >> 10, info->sector_count);
-
+
printf (" Sector Start Addresses:");
- for (i=0; i<info->sector_count; ++i)
+ for (i=0; i<info->sector_count; ++i)
{
if ((i % 5) == 0)
printf ("\n ");
* The following code cannot be run from FLASH!
*/
-static ulong
-flash_get_size (volatile unsigned char *addr,
- flash_info_t *info)
+static ulong
+flash_get_size (volatile unsigned char *addr,
+ flash_info_t *info)
{
short i;
uchar value;
addr[0x0555] = 0xAA;
addr[0x02AA] = 0x55;
addr[0x0555] = 0x90;
-
+
value = addr[0];
- switch ( value )
+ switch ( value )
{
/* case AMD_MANUFACT: */
case 0x01:
info->size = 0;
return (0); /* no or unknown flash */
}
-
+
value = addr[1]; /* device ID */
-
- switch ( value )
+
+ switch ( value )
{
case STM_ID_F040B:
case AMD_ID_F040B:
}
/* set up sector start adress table */
- for (i = 0; i < info->sector_count; i++)
+ for (i = 0; i < info->sector_count; i++)
{
info->start[i] = base + (i * 0x00010000);
}
-
+
/* check for protected sectors */
- for (i = 0; i < info->sector_count; i++)
+ for (i = 0; i < info->sector_count; i++)
{
/* read sector protection at sector address, (A7 .. A0) = 0x02 */
/* D0 = 1 if protected */
/*
* Prevent writes to uninitialized FLASH.
*/
- if ( info->flash_id != FLASH_UNKNOWN )
+ if ( info->flash_id != FLASH_UNKNOWN )
{
addr = (volatile unsigned char *)info->start[0];
-
+
*addr = 0xF0; /* reset bank */
}
-
+
return (info->size);
}
*/
int
-flash_erase (flash_info_t *info,
- int s_first,
+flash_erase (flash_info_t *info,
+ int s_first,
int s_last)
{
volatile unsigned char *addr = (volatile unsigned char *)(info->start[0]);
int flag, prot, sect, l_sect;
ulong start, now, last;
-
- if ( (s_first < 0) || (s_first > s_last) )
+
+ if ( (s_first < 0) || (s_first > s_last) )
{
- if ( info->flash_id == FLASH_UNKNOWN )
+ if ( info->flash_id == FLASH_UNKNOWN )
{
printf ("- missing\n");
- }
- else
+ }
+ else
{
printf ("- no sectors to erase\n");
}
}
if ( (info->flash_id == FLASH_UNKNOWN) ||
- (info->flash_id > FLASH_AMD_COMP) )
+ (info->flash_id > FLASH_AMD_COMP) )
{
printf ("Can't erase unknown flash type %08lx - aborted\n",
info->flash_id);
return ( 1 );
}
-
+
prot = 0;
- for (sect=s_first; sect<=s_last; ++sect)
+ for (sect=s_first; sect<=s_last; ++sect)
{
- if ( info->protect[sect] )
+ if ( info->protect[sect] )
{
prot++;
}
}
-
- if ( prot )
+
+ if ( prot )
{
printf ("- Warning: %d protected sectors will not be erased!\n", prot);
- }
- else
+ }
+ else
{
printf ("\n");
}
-
+
l_sect = -1;
-
+
/* Disable interrupts which might cause a timeout here */
flag = disable_interrupts();
-
+
addr[0x0555] = 0xAA;
addr[0x02AA] = 0x55;
addr[0x0555] = 0x80;
addr[0x0555] = 0xAA;
addr[0x02AA] = 0x55;
-
+
/* Start erase on unprotected sectors */
- for (sect = s_first; sect<=s_last; sect++)
+ for (sect = s_first; sect<=s_last; sect++)
{
if (info->protect[sect] == 0) /* not protected */
{
l_sect = sect;
}
}
-
+
/* re-enable interrupts if necessary */
if ( flag )
enable_interrupts();
-
+
/* wait at least 80us - let's wait 1 ms */
udelay (1000);
-
+
/*
* We wait for the last triggered sector
*/
if ( l_sect < 0 )
goto DONE;
-
+
start = get_timer (0);
last = start;
addr = (volatile unsigned char *)(info->start[l_sect]);
- while ( (addr[0] & 0x80) != 0x80 )
+ while ( (addr[0] & 0x80) != 0x80 )
{
- if ( (now = get_timer(start)) > CFG_FLASH_ERASE_TOUT )
+ if ( (now = get_timer(start)) > CFG_FLASH_ERASE_TOUT )
{
printf ("Timeout\n");
return ( 1 );
last = now;
}
}
-
+
DONE:
/* reset to read mode */
addr = (volatile unsigned char *)info->start[0];
addr[0] = 0xF0; /* reset bank */
-
+
printf (" done\n");
-
+
return ( 0 );
}
* 2 - Flash not erased
*/
-int
-write_buff (flash_info_t *info,
- uchar *src,
- ulong addr,
+int
+write_buff (flash_info_t *info,
+ uchar *src,
+ ulong addr,
ulong cnt)
{
ulong cp, wp, data;
/* Width of the data bus: 8 bits */
wp = addr;
-
+
while ( cnt )
{
bdata = *src++;
-
+
if ( (rc = write_byte(info, wp, bdata)) != 0 )
{
return (rc);
}
-
+
++wp;
--cnt;
}
/* Width of the data bus: 32 bits */
wp = (addr & ~3); /* get lower word aligned address */
-
+
/*
* handle unaligned start bytes
*/
- if ( (l = addr - wp) != 0 )
+ if ( (l = addr - wp) != 0 )
{
data = 0;
- for (i=0, cp=wp; i<l; ++i, ++cp)
+ for (i=0, cp=wp; i<l; ++i, ++cp)
{
data = (data << 8) | (*(uchar *)cp);
}
- for (; i<4 && cnt>0; ++i)
+ for (; i<4 && cnt>0; ++i)
{
data = (data << 8) | *src++;
--cnt;
++cp;
}
- for (; cnt==0 && i<4; ++i, ++cp)
+ for (; cnt==0 && i<4; ++i, ++cp)
{
data = (data << 8) | (*(uchar *)cp);
}
-
- if ( (rc = write_word(info, wp, data)) != 0 )
+
+ if ( (rc = write_word(info, wp, data)) != 0 )
{
return (rc);
}
wp += 4;
}
-
+
/*
* handle word aligned part
*/
- while ( cnt >= 4 )
+ while ( cnt >= 4 )
{
data = 0;
- for (i=0; i<4; ++i)
+ for (i=0; i<4; ++i)
{
data = (data << 8) | *src++;
}
- if ( (rc = write_word(info, wp, data)) != 0 )
+ if ( (rc = write_word(info, wp, data)) != 0 )
{
return (rc);
}
wp += 4;
cnt -= 4;
}
-
- if ( cnt == 0 )
+
+ if ( cnt == 0 )
{
return (0);
}
-
+
/*
* handle unaligned tail bytes
*/
data = 0;
- for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp)
+ for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp)
{
data = (data << 8) | *src++;
--cnt;
}
- for (; i<4; ++i, ++cp)
+ for (; i<4; ++i, ++cp)
{
data = (data << 8) | (*(uchar *)cp);
}
-
+
return (write_word(info, wp, data));
}
}
* 1 - write timeout
* 2 - Flash not erased
*/
-static int
-write_word (flash_info_t *info,
- ulong dest,
+static int
+write_word (flash_info_t *info,
+ ulong dest,
ulong data)
{
vu_long *addr = (vu_long*)(info->start[0]);
ulong start;
int flag;
-
+
/* Check if Flash is (sufficiently) erased */
- if ( (*((vu_long *)dest) & data) != data )
+ if ( (*((vu_long *)dest) & data) != data )
{
return (2);
}
/* Disable interrupts which might cause a timeout here */
flag = disable_interrupts();
-
+
addr[0x0555] = 0x00AA00AA;
addr[0x02AA] = 0x00550055;
addr[0x0555] = 0x00A000A0;
-
+
*((vu_long *)dest) = data;
-
+
/* re-enable interrupts if necessary */
if ( flag )
enable_interrupts();
/* data polling for D7 */
start = get_timer (0);
- while ( (*((vu_long *)dest) & 0x00800080) != (data & 0x00800080) )
+ while ( (*((vu_long *)dest) & 0x00800080) != (data & 0x00800080) )
{
- if ( get_timer(start) > CFG_FLASH_WRITE_TOUT )
+ if ( get_timer(start) > CFG_FLASH_WRITE_TOUT )
{
return (1);
}
* 1 - write timeout
* 2 - Flash not erased
*/
-static int
-write_byte (flash_info_t *info,
- ulong dest,
+static int
+write_byte (flash_info_t *info,
+ ulong dest,
uchar data)
{
volatile unsigned char *addr = (volatile unsigned char *)(info->start[0]);
ulong start;
int flag;
-
+
/* Check if Flash is (sufficiently) erased */
- if ( (*((volatile unsigned char *)dest) & data) != data )
+ if ( (*((volatile unsigned char *)dest) & data) != data )
{
return (2);
}
/* Disable interrupts which might cause a timeout here */
flag = disable_interrupts();
-
+
addr[0x0555] = 0xAA;
addr[0x02AA] = 0x55;
addr[0x0555] = 0xA0;
-
+
*((volatile unsigned char *)dest) = data;
-
+
/* re-enable interrupts if necessary */
if ( flag )
enable_interrupts();
/* data polling for D7 */
start = get_timer (0);
- while ( (*((volatile unsigned char *)dest) & 0x80) != (data & 0x80) )
+ while ( (*((volatile unsigned char *)dest) & 0x80) != (data & 0x80) )
{
- if ( get_timer(start) > CFG_FLASH_WRITE_TOUT )
+ if ( get_timer(start) > CFG_FLASH_WRITE_TOUT )
{
return (1);
}
projects / u-boot / blobdiff