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uboot-1.1.4-kirkwood/board/mvblue/flash.c
Olaf Rempel f69754bccc u-boot 1.1.4
2024-01-07 23:57:24 +01:00

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/*
* (C) Copyright 2000
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
* (C) Copyright 2001-2003
*
* Changes for MATRIX Vision mvBLUE devices
* MATRIX Vision GmbH / hg,as info@matrix-vision.de
*
* 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 <mpc824x.h>
#if 0
#define mvdebug(p) printf ##p
#else
#define mvdebug(p)
#endif
flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
#define FLASH_BUS_WIDTH 8
#if (FLASH_BUS_WIDTH==32)
#define FLASH_DATA_MASK 0xffffffff
#define FLASH_SHIFT 1
#define FDT vu_long
#elif (FLASH_BUS_WIDTH==16)
#define FLASH_DATA_MASK 0xff
#define FLASH_SHIFT 0
#define FDT vu_short
#elif (FLASH_BUS_WIDTH==8)
#define FLASH_DATA_MASK 0xff
#define FLASH_SHIFT 0
#define FDT vu_char
#else
#error FLASH_BUS_WIDTH undefined
#endif
/*-----------------------------------------------------------------------
* Functions
*/
static ulong flash_get_size (vu_long *address, flash_info_t *info);
static int write_word (flash_info_t *info, ulong dest, ulong data);
static void flash_get_offsets (ulong base, flash_info_t *info);
/*-----------------------------------------------------------------------
*/
unsigned long flash_init (void)
{
unsigned long size_b0;
int i;
for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
flash_info[i].flash_id = FLASH_UNKNOWN;
}
size_b0 = flash_get_size((vu_long *)0xffc00000, &flash_info[0]);
if (flash_info[0].flash_id == FLASH_UNKNOWN) {
printf ("## Unknown FLASH : Size = 0x%08lx = %ld MB\n",
size_b0, size_b0<<20);
}
flash_get_offsets (0xffc00000, &flash_info[0]);
flash_info[0].size = size_b0;
/* monitor protection OFF by default */
flash_protect ( FLAG_PROTECT_CLEAR, 0xffc00000, 0x2000, flash_info );
return size_b0;
}
/*-----------------------------------------------------------------------
*/
static void flash_get_offsets (ulong base, flash_info_t *info)
{
int i;
/* set up sector start address table */
if (info->flash_id & FLASH_BTYPE)
{ /* bottom boot sector types - these are the useful ones! */
/* set sector offsets for bottom boot block type */
if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B)
{ /* AMDLV320B has 8 x 8k bottom boot sectors */
for (i = 0; i < 8; i++) /* +8k */
info->start[i] = base + (i * (0x00002000 << FLASH_SHIFT));
for (; i < info->sector_count; i++) /* +64k */
info->start[i] = base + (i * (0x00010000 << FLASH_SHIFT)) - (0x00070000 << FLASH_SHIFT);
}
else
{ /* other types have 4 bottom boot sectors (16,8,8,32) */
i = 0;
info->start[i++] = base + 0x00000000; /* - */
info->start[i++] = base + (0x00004000 << FLASH_SHIFT); /* +16k */
info->start[i++] = base + (0x00006000 << FLASH_SHIFT); /* +8k */
info->start[i++] = base + (0x00008000 << FLASH_SHIFT); /* +8k */
info->start[i++] = base + (0x00010000 << FLASH_SHIFT); /* +32k */
for (; i < info->sector_count; i++) /* +64k */
info->start[i] = base + (i * (0x00010000 << FLASH_SHIFT)) - (0x00030000 << FLASH_SHIFT);
}
}
else
{ /* top boot sector types - not so useful */
/* set sector offsets for top boot block type */
if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T)
{ /* AMDLV320T has 8 x 8k top boot sectors */
for (i = 0; i < info->sector_count - 8; i++) /* +64k */
info->start[i] = base + (i * (0x00010000 << FLASH_SHIFT));
for (; i < info->sector_count; i++) /* +8k */
info->start[i] = base + (i * (0x00002000 << FLASH_SHIFT));
}
else
{ /* other types have 4 top boot sectors (32,8,8,16) */
for (i = 0; i < info->sector_count - 4; i++) /* +64k */
info->start[i] = base + (i * (0x00010000 << FLASH_SHIFT));
info->start[i++] = base + info->size - (0x00010000 << FLASH_SHIFT); /* -32k */
info->start[i++] = base + info->size - (0x00008000 << FLASH_SHIFT); /* -8k */
info->start[i++] = base + info->size - (0x00006000 << FLASH_SHIFT); /* -8k */
info->start[i] = base + info->size - (0x00004000 << FLASH_SHIFT); /* -16k */
}
}
}
/*-----------------------------------------------------------------------
*/
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_STM: printf ("ST "); break;
default: printf ("Unknown Vendor "); break;
}
switch (info->flash_id & FLASH_TYPEMASK) {
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;
case FLASH_STMW320DB: printf ("M29W320B (32 Mbit, bottom boot sect)\n");
break;
case FLASH_STMW320DT: printf ("M29W320T (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 cannot be run from FLASH!
*/
#define AMD_ID_LV160T_MVS (AMD_ID_LV160T & FLASH_DATA_MASK)
#define AMD_ID_LV160B_MVS (AMD_ID_LV160B & FLASH_DATA_MASK)
#define AMD_ID_LV320T_MVS (AMD_ID_LV320T & FLASH_DATA_MASK)
#define AMD_ID_LV320B_MVS (AMD_ID_LV320B & FLASH_DATA_MASK)
#define STM_ID_W320DT_MVS (STM_ID_29W320DT & FLASH_DATA_MASK)
#define STM_ID_W320DB_MVS (STM_ID_29W320DB & FLASH_DATA_MASK)
#define AMD_MANUFACT_MVS (AMD_MANUFACT & FLASH_DATA_MASK)
#define FUJ_MANUFACT_MVS (FUJ_MANUFACT & FLASH_DATA_MASK)
#define STM_MANUFACT_MVS (STM_MANUFACT & FLASH_DATA_MASK)
#if (FLASH_BUS_WIDTH >= 16)
#define AUTOSELECT_ADDR1 0x0555
#define AUTOSELECT_ADDR2 0x02AA
#define AUTOSELECT_ADDR3 AUTOSELECT_ADDR1
#else
#define AUTOSELECT_ADDR1 0x0AAA
#define AUTOSELECT_ADDR2 0x0555
#define AUTOSELECT_ADDR3 AUTOSELECT_ADDR1
#endif
#define AUTOSELECT_DATA1 (0x00AA00AA & FLASH_DATA_MASK)
#define AUTOSELECT_DATA2 (0x00550055 & FLASH_DATA_MASK)
#define AUTOSELECT_DATA3 (0x00900090 & FLASH_DATA_MASK)
#define RESET_BANK_DATA (0x00F000F0 & FLASH_DATA_MASK)
static ulong flash_get_size (vu_long *address, flash_info_t *info)
{
short i;
FDT value;
FDT *addr = (FDT *)address;
ulong base = (ulong)address;
addr[AUTOSELECT_ADDR1] = AUTOSELECT_DATA1;
addr[AUTOSELECT_ADDR2] = AUTOSELECT_DATA2;
addr[AUTOSELECT_ADDR3] = AUTOSELECT_DATA3;
__asm__ __volatile__("sync");
udelay(180);
value = addr[0]; /* manufacturer ID */
switch (value) {
case AMD_MANUFACT_MVS:
info->flash_id = FLASH_MAN_AMD;
break;
case FUJ_MANUFACT_MVS:
info->flash_id = FLASH_MAN_FUJ;
break;
case STM_MANUFACT_MVS:
info->flash_id = FLASH_MAN_STM;
break;
default:
info->flash_id = FLASH_UNKNOWN;
info->sector_count = 0;
info->size = 0;
return (0); /* no or unknown flash */
}
#if (FLASH_BUS_WIDTH >= 16)
value = addr[1]; /* device ID */
#else
value = addr[2]; /* device ID */
#endif
switch (value) {
case AMD_ID_LV160T_MVS:
info->flash_id += FLASH_AM160T;
info->sector_count = 37;
info->size = (0x00200000 << FLASH_SHIFT);
break; /* => 2 or 4 MB */
case AMD_ID_LV160B_MVS:
info->flash_id += FLASH_AM160B;
info->sector_count = 37;
info->size = (0x00200000 << FLASH_SHIFT);
break; /* => 2 or 4 MB */
case AMD_ID_LV320T_MVS:
info->flash_id += FLASH_AM320T;
info->sector_count = 71;
info->size = (0x00400000 << FLASH_SHIFT);
break; /* => 4 or 8 MB */
case AMD_ID_LV320B_MVS:
info->flash_id += FLASH_AM320B;
info->sector_count = 71;
info->size = (0x00400000 << FLASH_SHIFT);
break; /* => 4 or 8MB */
case STM_ID_W320DT_MVS:
info->flash_id += FLASH_STMW320DT;
info->sector_count = 67;
info->size = (0x00400000 << FLASH_SHIFT);
break; /* => 4 or 8 MB */
case STM_ID_W320DB_MVS:
info->flash_id += FLASH_STMW320DB;
info->sector_count = 67;
info->size = (0x00400000 << FLASH_SHIFT);
break; /* => 4 or 8MB */
default:
info->flash_id = FLASH_UNKNOWN;
return (0); /* => no or unknown flash */
}
/* set up sector start address table */
flash_get_offsets (base, info);
/* 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 = (FDT *)(info->start[i]);
info->protect[i] = addr[2] & 1;
}
/*
* Prevent writes to uninitialized FLASH.
*/
if (info->flash_id != FLASH_UNKNOWN) {
addr = (FDT *)info->start[0];
*addr = RESET_BANK_DATA; /* reset bank */
}
return (info->size);
}
/*-----------------------------------------------------------------------
*/
#if (FLASH_BUS_WIDTH >= 16)
#define ERASE_ADDR1 0x0555
#define ERASE_ADDR2 0x02AA
#else
#define ERASE_ADDR1 0x0AAA
#define ERASE_ADDR2 0x0555
#endif
#define ERASE_ADDR3 ERASE_ADDR1
#define ERASE_ADDR4 ERASE_ADDR1
#define ERASE_ADDR5 ERASE_ADDR2
#define ERASE_DATA1 (0x00AA00AA & FLASH_DATA_MASK)
#define ERASE_DATA2 (0x00550055 & FLASH_DATA_MASK)
#define ERASE_DATA3 (0x00800080 & FLASH_DATA_MASK)
#define ERASE_DATA4 ERASE_DATA1
#define ERASE_DATA5 ERASE_DATA2
#define ERASE_SECTOR_DATA (0x00300030 & FLASH_DATA_MASK)
#define ERASE_CHIP_DATA (0x00100010 & FLASH_DATA_MASK)
#define ERASE_CONFIRM_DATA (0x00800080 & FLASH_DATA_MASK)
int flash_erase (flash_info_t *info, int s_first, int s_last)
{
FDT *addr = (FDT *)(info->start[0]);
int prot, sect, l_sect, flag;
ulong start, now, last;
__asm__ __volatile__ ("sync");
addr[0] = 0xf0;
udelay(1000);
printf("\nflash_erase: first = %d @ 0x%08lx\n", s_first, info->start[s_first] );
printf(" last = %d @ 0x%08lx\n", s_last , info->start[s_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 1;
}
if ((info->flash_id == FLASH_UNKNOWN) || (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) {
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[ERASE_ADDR1] = ERASE_DATA1;
addr[ERASE_ADDR2] = ERASE_DATA2;
addr[ERASE_ADDR3] = ERASE_DATA3;
addr[ERASE_ADDR4] = ERASE_DATA4;
addr[ERASE_ADDR5] = ERASE_DATA5;
for (sect = s_first; sect <= s_last; sect++) {
if (info->protect[sect] == 0) {
addr = (FDT *)(info->start[sect]);
addr[0] = ERASE_SECTOR_DATA;
l_sect = sect;
}
}
if (flag)
enable_interrupts();
/*
* We wait for the last triggered sector
*/
if (l_sect < 0)
goto DONE;
start = get_timer (0);
last = start;
addr = (FDT *)(info->start[l_sect]);
while ((addr[0] & ERASE_CONFIRM_DATA) != ERASE_CONFIRM_DATA) {
if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
printf ("Timeout\n");
return 1;
}
/* show that we're waiting */
if ((now - last) > 1000) { /* every second */
putc ('.');
last = now;
}
}
DONE:
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)
{
#define BUFF_INC 4
ulong cp, wp, data;
int i, l, rc;
mvdebug (("+write_buff %p ==> 0x%08lx, count = 0x%08lx\n", src, addr, cnt));
wp = (addr & ~3); /* get lower word aligned address */
/*
* handle unaligned start bytes
*/
if ((l = addr - wp) != 0) {
mvdebug ((" handle unaligned start bytes (cnt = 0x%08lx)\n", cnt));
data = 0;
for (i=0, cp=wp; i<l; ++i, ++cp) {
data = (data << 8) | (*(uchar *)cp);
}
for (; i<BUFF_INC && cnt>0; ++i) {
data = (data << 8) | *src++;
--cnt;
++cp;
}
for (; cnt==0 && i<BUFF_INC; ++i, ++cp) {
data = (data << 8) | (*(uchar *)cp);
}
if ((rc = write_word(info, wp, data)) != 0) {
return (rc);
}
wp += BUFF_INC;
}
/*
* handle (half)word aligned part
*/
mvdebug ((" handle word aligned part (cnt = 0x%08lx)\n", cnt));
while (cnt >= BUFF_INC) {
data = 0;
for (i=0; i<BUFF_INC; ++i) {
data = (data << 8) | *src++;
}
if ((rc = write_word(info, wp, data)) != 0) {
return (rc);
}
wp += BUFF_INC;
cnt -= BUFF_INC;
}
if (cnt == 0) {
return (0);
}
/*
* handle unaligned tail bytes
*/
mvdebug ((" handle unaligned tail bytes (cnt = 0x%08lx)\n", cnt));
data = 0;
for (i=0, cp=wp; i<BUFF_INC && cnt>0; ++i, ++cp) {
data = (data << 8) | *src++;
--cnt;
}
for (; i<BUFF_INC; ++i, ++cp) {
data = (data << 8) | (*(uchar *)cp);
}
return (write_word(info, wp, data));
}
#if (FLASH_BUS_WIDTH >= 16)
#define WRITE_ADDR1 0x0555
#define WRITE_ADDR2 0x02AA
#else
#define WRITE_ADDR1 0x0AAA
#define WRITE_ADDR2 0x0555
#define WRITE_ADDR3 WRITE_ADDR1
#endif
#define WRITE_DATA1 (0x00AA00AA & FLASH_DATA_MASK)
#define WRITE_DATA2 (0x00550055 & FLASH_DATA_MASK)
#define WRITE_DATA3 (0x00A000A0 & FLASH_DATA_MASK)
#define WRITE_CONFIRM_DATA ERASE_CONFIRM_DATA
/*-----------------------------------------------------------------------
* Write a byte to Flash, returns:
* 0 - OK
* 1 - write timeout
* 2 - Flash not erased
*/
static int write_char (flash_info_t *info, ulong dest, uchar data)
{
vu_char *addr = (vu_char *)(info->start[0]);
ulong start;
int flag;
/* Check if Flash is (sufficiently) erased */
if ((*((vu_char *)dest) & data) != data) {
printf(" *** ERROR: Flash not erased !\n");
return (2);
}
flag = disable_interrupts();
addr[WRITE_ADDR1] = WRITE_DATA1;
addr[WRITE_ADDR2] = WRITE_DATA2;
addr[WRITE_ADDR3] = WRITE_DATA3;
*((vu_char *)dest) = data;
if (flag)
enable_interrupts();
/* data polling for D7 */
start = get_timer (0);
addr = (vu_char *)dest;
while (( (*addr) & WRITE_CONFIRM_DATA) != (data & WRITE_CONFIRM_DATA)) {
if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
printf(" *** ERROR: Flash write timeout !");
return (1);
}
}
mvdebug (("-write_byte\n"));
return (0);
}
/*-----------------------------------------------------------------------
* 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)
{
int i,
result = 0;
mvdebug (("+write_word : 0x%08lx @ 0x%08lx\n", data, dest));
for ( i=0; (i < 4) && (result == 0); i++, dest+=1 )
result = write_char (info, dest, (data >> (8*(3-i))) & 0xff );
mvdebug (("-write_word\n"));
return result;
}
/*---------------------------------------------------------------- */
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