561 lines
13 KiB
C
561 lines
13 KiB
C
/*
|
|
* (C) Copyright 2000
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <mpc8xx.h>
|
|
|
|
flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
|
|
|
|
#if defined(CFG_ENV_IS_IN_FLASH)
|
|
# ifndef CFG_ENV_ADDR
|
|
# define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
|
|
# endif
|
|
# ifndef CFG_ENV_SIZE
|
|
# define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
|
|
# endif
|
|
# ifndef CFG_ENV_SECT_SIZE
|
|
# define CFG_ENV_SECT_SIZE CFG_ENV_SIZE
|
|
# endif
|
|
#endif
|
|
|
|
#define QUAD_ID(id) ((((ulong)(id) & 0xFF) << 24) | \
|
|
(((ulong)(id) & 0xFF) << 16) | \
|
|
(((ulong)(id) & 0xFF) << 8) | \
|
|
(((ulong)(id) & 0xFF) << 0) \
|
|
)
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Functions
|
|
*/
|
|
static ulong flash_get_size (vu_long * addr, flash_info_t * info);
|
|
static int write_word (flash_info_t * info, ulong dest, ulong data);
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
unsigned long flash_init (void)
|
|
{
|
|
volatile immap_t *immap = (immap_t *) CFG_IMMR;
|
|
volatile memctl8xx_t *memctl = &immap->im_memctl;
|
|
vu_long *bcsr = (vu_long *)BCSR_ADDR;
|
|
unsigned long pd_size, total_size, bsize, or_am;
|
|
int i;
|
|
|
|
/* Init: no FLASHes known */
|
|
for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
|
|
flash_info[i].flash_id = FLASH_UNKNOWN;
|
|
flash_info[i].size = 0;
|
|
flash_info[i].sector_count = 0;
|
|
flash_info[i].start[0] = 0xFFFFFFFF; /* For TFTP */
|
|
}
|
|
|
|
switch ((bcsr[2] & BCSR2_FLASH_PD_MASK) >> BCSR2_FLASH_PD_SHIFT) {
|
|
case 2:
|
|
case 4:
|
|
case 6:
|
|
pd_size = 0x800000;
|
|
or_am = 0xFF800000;
|
|
break;
|
|
|
|
case 5:
|
|
case 7:
|
|
pd_size = 0x400000;
|
|
or_am = 0xFFC00000;
|
|
break;
|
|
|
|
case 8:
|
|
pd_size = 0x200000;
|
|
or_am = 0xFFE00000;
|
|
break;
|
|
|
|
default:
|
|
pd_size = 0;
|
|
or_am = 0xFFE00000;
|
|
printf("## Unsupported flash detected by BCSR: 0x%08X\n", bcsr[2]);
|
|
}
|
|
|
|
total_size = 0;
|
|
for (i = 0; i < CFG_MAX_FLASH_BANKS && total_size < pd_size; ++i) {
|
|
bsize = flash_get_size((vu_long *)(CFG_FLASH_BASE + total_size),
|
|
&flash_info[i]);
|
|
|
|
if (flash_info[i].flash_id == FLASH_UNKNOWN) {
|
|
printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
|
|
i, bsize, bsize >> 20);
|
|
}
|
|
|
|
total_size += bsize;
|
|
}
|
|
|
|
if (total_size != pd_size) {
|
|
printf("## Detected flash size %lu conflicts with PD data %lu\n",
|
|
total_size, pd_size);
|
|
}
|
|
|
|
/* Remap FLASH according to real size */
|
|
memctl->memc_or0 = or_am | CFG_OR_TIMING_FLASH;
|
|
|
|
for (i = 0; i < CFG_MAX_FLASH_BANKS && flash_info[i].size != 0; ++i) {
|
|
#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
|
|
/* monitor protection ON by default */
|
|
if (CFG_MONITOR_BASE >= flash_info[i].start[0])
|
|
flash_protect (FLAG_PROTECT_SET,
|
|
CFG_MONITOR_BASE,
|
|
CFG_MONITOR_BASE + monitor_flash_len - 1,
|
|
&flash_info[i]);
|
|
#endif
|
|
|
|
#ifdef CFG_ENV_IS_IN_FLASH
|
|
/* ENV protection ON by default */
|
|
if (CFG_ENV_ADDR >= flash_info[i].start[0])
|
|
flash_protect (FLAG_PROTECT_SET,
|
|
CFG_ENV_ADDR,
|
|
CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
|
|
&flash_info[i]);
|
|
#endif
|
|
}
|
|
|
|
return total_size;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
void flash_print_info (flash_info_t * info)
|
|
{
|
|
int i;
|
|
|
|
if (info->flash_id == FLASH_UNKNOWN) {
|
|
printf ("missing or unknown FLASH type\n");
|
|
return;
|
|
}
|
|
|
|
switch (info->flash_id & FLASH_VENDMASK) {
|
|
case FLASH_MAN_AMD:
|
|
printf ("AMD ");
|
|
break;
|
|
case FLASH_MAN_FUJ:
|
|
printf ("FUJITSU ");
|
|
break;
|
|
case FLASH_MAN_BM:
|
|
printf ("BRIGHT MICRO ");
|
|
break;
|
|
default:
|
|
printf ("Unknown Vendor ");
|
|
break;
|
|
}
|
|
|
|
switch (info->flash_id & FLASH_TYPEMASK) {
|
|
case FLASH_AM040:
|
|
printf ("29F040 or 29LV040 (4 Mbit, uniform sectors)\n");
|
|
break;
|
|
case FLASH_AM080:
|
|
printf ("29F080 or 29LV080 (8 Mbit, uniform sectors)\n");
|
|
break;
|
|
case FLASH_AM400B:
|
|
printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
|
|
break;
|
|
case FLASH_AM400T:
|
|
printf ("AM29LV400T (4 Mbit, top boot sector)\n");
|
|
break;
|
|
case FLASH_AM800B:
|
|
printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
|
|
break;
|
|
case FLASH_AM800T:
|
|
printf ("AM29LV800T (8 Mbit, top boot sector)\n");
|
|
break;
|
|
case FLASH_AM160B:
|
|
printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
|
|
break;
|
|
case FLASH_AM160T:
|
|
printf ("AM29LV160T (16 Mbit, top boot sector)\n");
|
|
break;
|
|
case FLASH_AM320B:
|
|
printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
|
|
break;
|
|
case FLASH_AM320T:
|
|
printf ("AM29LV320T (32 Mbit, top boot sector)\n");
|
|
break;
|
|
default:
|
|
printf ("Unknown Chip Type\n");
|
|
break;
|
|
}
|
|
|
|
printf (" Size: %ld MB in %d Sectors\n", info->size >> 20,
|
|
info->sector_count);
|
|
|
|
printf (" Sector Start Addresses:");
|
|
|
|
for (i = 0; i < info->sector_count; ++i) {
|
|
if ((i % 5) == 0) {
|
|
printf ("\n ");
|
|
}
|
|
|
|
printf (" %08lX%s",
|
|
info->start[i], info->protect[i] ? " (RO)" : " ");
|
|
}
|
|
|
|
printf ("\n");
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* The following code can not run from flash!
|
|
*/
|
|
static ulong flash_get_size (vu_long * addr, flash_info_t * info)
|
|
{
|
|
short i;
|
|
|
|
/* Write auto select command: read Manufacturer ID */
|
|
addr[0x0555] = 0xAAAAAAAA;
|
|
addr[0x02AA] = 0x55555555;
|
|
addr[0x0555] = 0x90909090;
|
|
|
|
switch (addr[0]) {
|
|
case QUAD_ID(AMD_MANUFACT):
|
|
info->flash_id = FLASH_MAN_AMD;
|
|
break;
|
|
|
|
case QUAD_ID(FUJ_MANUFACT):
|
|
info->flash_id = FLASH_MAN_FUJ;
|
|
break;
|
|
|
|
default:
|
|
info->flash_id = FLASH_UNKNOWN;
|
|
info->sector_count = 0;
|
|
info->size = 0;
|
|
break;
|
|
}
|
|
|
|
switch (addr[1]) { /* device ID */
|
|
case QUAD_ID(AMD_ID_F040B):
|
|
case QUAD_ID(AMD_ID_LV040B):
|
|
info->flash_id += FLASH_AM040;
|
|
info->sector_count = 8;
|
|
info->size = 0x00200000;
|
|
break; /* => 2 MB */
|
|
|
|
case QUAD_ID(AMD_ID_F080B):
|
|
info->flash_id += FLASH_AM080;
|
|
info->sector_count = 16;
|
|
info->size = 0x00400000;
|
|
break; /* => 4 MB */
|
|
#if 0
|
|
case AMD_ID_LV400T:
|
|
info->flash_id += FLASH_AM400T;
|
|
info->sector_count = 11;
|
|
info->size = 0x00100000;
|
|
break; /* => 1 MB */
|
|
|
|
case AMD_ID_LV400B:
|
|
info->flash_id += FLASH_AM400B;
|
|
info->sector_count = 11;
|
|
info->size = 0x00100000;
|
|
break; /* => 1 MB */
|
|
|
|
case AMD_ID_LV800T:
|
|
info->flash_id += FLASH_AM800T;
|
|
info->sector_count = 19;
|
|
info->size = 0x00200000;
|
|
break; /* => 2 MB */
|
|
|
|
case AMD_ID_LV800B:
|
|
info->flash_id += FLASH_AM800B;
|
|
info->sector_count = 19;
|
|
info->size = 0x00200000;
|
|
break; /* => 2 MB */
|
|
|
|
case AMD_ID_LV160T:
|
|
info->flash_id += FLASH_AM160T;
|
|
info->sector_count = 35;
|
|
info->size = 0x00400000;
|
|
break; /* => 4 MB */
|
|
|
|
case AMD_ID_LV160B:
|
|
info->flash_id += FLASH_AM160B;
|
|
info->sector_count = 35;
|
|
info->size = 0x00400000;
|
|
break; /* => 4 MB */
|
|
|
|
case AMD_ID_LV320T:
|
|
info->flash_id += FLASH_AM320T;
|
|
info->sector_count = 67;
|
|
info->size = 0x00800000;
|
|
break; /* => 8 MB */
|
|
|
|
case AMD_ID_LV320B:
|
|
info->flash_id += FLASH_AM320B;
|
|
info->sector_count = 67;
|
|
info->size = 0x00800000;
|
|
break; /* => 8 MB */
|
|
#endif /* 0 */
|
|
default:
|
|
info->flash_id = FLASH_UNKNOWN;
|
|
return (0); /* => no or unknown flash */
|
|
}
|
|
|
|
#if 0
|
|
/* set up sector start address table */
|
|
if (info->flash_id & FLASH_BTYPE) {
|
|
/* set sector offsets for bottom boot block type */
|
|
info->start[0] = base + 0x00000000;
|
|
info->start[1] = base + 0x00008000;
|
|
info->start[2] = base + 0x0000C000;
|
|
info->start[3] = base + 0x00010000;
|
|
for (i = 4; i < info->sector_count; i++) {
|
|
info->start[i] = base + (i * 0x00020000) - 0x00060000;
|
|
}
|
|
} else {
|
|
/* set sector offsets for top boot block type */
|
|
i = info->sector_count - 1;
|
|
info->start[i--] = base + info->size - 0x00008000;
|
|
info->start[i--] = base + info->size - 0x0000C000;
|
|
info->start[i--] = base + info->size - 0x00010000;
|
|
for (; i >= 0; i--) {
|
|
info->start[i] = base + i * 0x00020000;
|
|
}
|
|
}
|
|
#else
|
|
/* set sector offsets for uniform sector type */
|
|
for (i = 0; i < info->sector_count; i++)
|
|
info->start[i] = (ulong)addr + (i * 0x00040000);
|
|
#endif
|
|
|
|
/* check for protected sectors */
|
|
for (i = 0; i < info->sector_count; i++) {
|
|
/* read sector protection at sector address, (A7 .. A0) = 0x02 */
|
|
/* D0 = 1 if protected */
|
|
addr = (volatile unsigned long *) (info->start[i]);
|
|
info->protect[i] = addr[2] & 1;
|
|
}
|
|
|
|
if (info->flash_id != FLASH_UNKNOWN) {
|
|
addr = (volatile unsigned long *) info->start[0];
|
|
*addr = 0xF0F0F0F0; /* reset bank */
|
|
}
|
|
|
|
return (info->size);
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
int flash_erase (flash_info_t * info, int s_first, int s_last)
|
|
{
|
|
vu_long *addr = (vu_long *) (info->start[0]);
|
|
int flag, prot, sect, l_sect;
|
|
ulong start, now, last;
|
|
|
|
if ((s_first < 0) || (s_first > s_last)) {
|
|
if (info->flash_id == FLASH_UNKNOWN) {
|
|
printf ("- missing\n");
|
|
} else {
|
|
printf ("- no sectors to erase\n");
|
|
}
|
|
return ERR_INVAL;
|
|
}
|
|
|
|
if ((info->flash_id == FLASH_UNKNOWN) ||
|
|
(info->flash_id > FLASH_AMD_COMP)) {
|
|
printf ("Can't erase unknown flash type - aborted\n");
|
|
return ERR_UNKNOWN_FLASH_TYPE;
|
|
}
|
|
|
|
prot = 0;
|
|
for (sect = s_first; sect <= s_last; ++sect) {
|
|
if (info->protect[sect]) {
|
|
prot++;
|
|
}
|
|
}
|
|
|
|
if (prot) {
|
|
printf ("- Warning: %d protected sectors will not be erased!\n", prot);
|
|
} else {
|
|
printf ("\n");
|
|
}
|
|
|
|
l_sect = -1;
|
|
|
|
/* Disable interrupts which might cause a timeout here */
|
|
flag = disable_interrupts ();
|
|
|
|
addr[0x0555] = 0xAAAAAAAA;
|
|
addr[0x02AA] = 0x55555555;
|
|
addr[0x0555] = 0x80808080;
|
|
addr[0x0555] = 0xAAAAAAAA;
|
|
addr[0x02AA] = 0x55555555;
|
|
|
|
/* Start erase on unprotected sectors */
|
|
for (sect = s_first; sect <= s_last; sect++) {
|
|
if (info->protect[sect] == 0) { /* not protected */
|
|
addr = (vu_long *) (info->start[sect]);
|
|
addr[0] = 0x30303030;
|
|
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 = (vu_long *) (info->start[l_sect]);
|
|
while ((addr[0] & 0xFFFFFFFF) != 0xFFFFFFFF)
|
|
{
|
|
if ((now = get_timer (start)) > CFG_FLASH_ERASE_TOUT) {
|
|
printf ("Timeout\n");
|
|
return ERR_TIMOUT;
|
|
}
|
|
/* show that we're waiting */
|
|
if ((now - last) > 1000) { /* every second */
|
|
putc ('.');
|
|
last = now;
|
|
}
|
|
}
|
|
|
|
DONE:
|
|
/* reset to read mode */
|
|
addr = (volatile unsigned long *) info->start[0];
|
|
addr[0] = 0xF0F0F0F0; /* reset bank */
|
|
|
|
printf (" done\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Copy memory to flash, returns:
|
|
* 0 - OK
|
|
* 1 - write timeout
|
|
* 2 - Flash not erased
|
|
*/
|
|
int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
|
|
{
|
|
ulong cp, wp, data;
|
|
int i, l, rc;
|
|
|
|
wp = (addr & ~3); /* get lower word aligned address */
|
|
|
|
/*
|
|
* handle unaligned start bytes
|
|
*/
|
|
if ((l = addr - wp) != 0) {
|
|
data = 0;
|
|
for (i = 0, cp = wp; i < l; ++i, ++cp) {
|
|
data = (data << 8) | (*(uchar *) cp);
|
|
}
|
|
for (; i < 4 && cnt > 0; ++i) {
|
|
data = (data << 8) | *src++;
|
|
--cnt;
|
|
++cp;
|
|
}
|
|
for (; cnt == 0 && i < 4; ++i, ++cp) {
|
|
data = (data << 8) | (*(uchar *) cp);
|
|
}
|
|
|
|
if ((rc = write_word (info, wp, data)) != 0) {
|
|
return (rc);
|
|
}
|
|
wp += 4;
|
|
}
|
|
|
|
/*
|
|
* handle word aligned part
|
|
*/
|
|
while (cnt >= 4) {
|
|
data = 0;
|
|
for (i = 0; i < 4; ++i) {
|
|
data = (data << 8) | *src++;
|
|
}
|
|
if ((rc = write_word (info, wp, data)) != 0) {
|
|
return (rc);
|
|
}
|
|
wp += 4;
|
|
cnt -= 4;
|
|
}
|
|
|
|
if (cnt == 0) {
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* handle unaligned tail bytes
|
|
*/
|
|
data = 0;
|
|
for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
|
|
data = (data << 8) | *src++;
|
|
--cnt;
|
|
}
|
|
for (; i < 4; ++i, ++cp) {
|
|
data = (data << 8) | (*(uchar *) cp);
|
|
}
|
|
|
|
return (write_word (info, wp, data));
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Write a word to Flash, returns:
|
|
* 0 - OK
|
|
* 1 - write timeout
|
|
* 2 - Flash not erased
|
|
*/
|
|
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) {
|
|
return ERR_NOT_ERASED;
|
|
}
|
|
/* Disable interrupts which might cause a timeout here */
|
|
flag = disable_interrupts ();
|
|
|
|
addr[0x0555] = 0xAAAAAAAA;
|
|
addr[0x02AA] = 0x55555555;
|
|
addr[0x0555] = 0xA0A0A0A0;
|
|
|
|
*((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) & 0x80808080) != (data & 0x80808080))
|
|
{
|
|
if (get_timer (start) > CFG_FLASH_WRITE_TOUT) {
|
|
return ERR_TIMOUT;
|
|
}
|
|
}
|
|
return (0);
|
|
}
|