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u-boot/board/pcs440ep/flash.c
Jean-Christophe PLAGNIOL-VILLARD 6d0f6bcf33 rename CFG_ macros to CONFIG_SYS 
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-10-18 21:54:03 +02:00

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/*
* (C) Copyright 2006
* Stefan Roese, DENX Software Engineering, sr@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 <asm/processor.h>
#ifndef CONFIG_SYS_FLASH_READ0
#define CONFIG_SYS_FLASH_READ0 0x0000 /* 0 is standard */
#define CONFIG_SYS_FLASH_READ1 0x0001 /* 1 is standard */
#define CONFIG_SYS_FLASH_READ2 0x0002 /* 2 is standard */
#endif
flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
/*
* Functions
*/
static int write_word(flash_info_t *info, ulong dest, ulong data);
static ulong flash_get_size(vu_long *addr, flash_info_t *info);
unsigned long flash_init(void)
{
unsigned long size_b0, size_b1;
int i;
unsigned long base_b0, base_b1;
/* Init: no FLASHes known */
for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
flash_info[i].flash_id = FLASH_UNKNOWN;
}
/* Static FLASH Bank configuration here - FIXME XXX */
base_b0 = FLASH_BASE0_PRELIM;
size_b0 = flash_get_size ((vu_long *) base_b0, &flash_info[0]);
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);
}
base_b1 = FLASH_BASE1_PRELIM;
size_b1 = flash_get_size ((vu_long *) base_b1, &flash_info[1]);
return (size_b0 + size_b1);
}
void flash_print_info(flash_info_t *info)
{
int i;
int k;
int size;
int erased;
volatile unsigned long *flash;
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_SST: printf ("SST "); break;
case FLASH_MAN_STM: printf ("ST Micro"); break;
case FLASH_MAN_EXCEL: printf ("Excel Semiconductor "); break;
case FLASH_MAN_MX: printf ("MXIC "); break;
default: printf ("Unknown Vendor "); break;
}
switch (info->flash_id & FLASH_TYPEMASK) {
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_AM040: printf ("AM29LV040B (4 Mbit, uniform sector size)\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_AM320T: printf ("AM29LV320T (32 M, top sector)\n");
break;
case FLASH_AM320B: printf ("AM29LV320B (32 M, bottom sector)\n");
break;
case FLASH_AMDL322T: printf ("AM29DL322T (32 M, top sector)\n");
break;
case FLASH_AMDL322B: printf ("AM29DL322B (32 M, bottom sector)\n");
break;
case FLASH_AMDL323T: printf ("AM29DL323T (32 M, top sector)\n");
break;
case FLASH_AMDL323B: printf ("AM29DL323B (32 M, bottom sector)\n");
break;
case FLASH_SST020: printf ("SST39LF/VF020 (2 Mbit, uniform sector size)\n");
break;
case FLASH_SST040: printf ("SST39LF/VF040 (4 Mbit, uniform sector size)\n");
break;
case STM_ID_M29W040B: printf ("ST Micro M29W040B (4 Mbit, uniform sector size)\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) {
#ifdef CONFIG_SYS_FLASH_EMPTY_INFO
/*
* Check if whole sector is erased
*/
if (i != (info->sector_count-1))
size = info->start[i+1] - info->start[i];
else
size = info->start[0] + info->size - info->start[i];
erased = 1;
flash = (volatile unsigned long *)info->start[i];
size = size >> 2; /* divide by 4 for longword access */
for (k=0; k<size; k++) {
if (*flash++ != 0xffffffff) {
erased = 0;
break;
}
}
if ((i % 5) == 0)
printf ("\n ");
/* print empty and read-only info */
printf (" %08lX%s%s",
info->start[i],
erased ? " E" : " ",
info->protect[i] ? "RO " : " ");
#else
if ((i % 5) == 0)
printf ("\n ");
printf (" %08lX%s",
info->start[i],
info->protect[i] ? " (RO)" : " ");
#endif
}
printf ("\n");
return;
}
/*
* The following code cannot be run from FLASH!
*/
static ulong flash_get_size(vu_long *addr, flash_info_t *info)
{
short i;
short n;
volatile CONFIG_SYS_FLASH_WORD_SIZE value;
ulong base = (ulong)addr;
volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)addr;
/* Write auto select command: read Manufacturer ID */
addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00900090;
value = addr2[CONFIG_SYS_FLASH_READ0];
switch (value) {
case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_MANUFACT:
info->flash_id = FLASH_MAN_AMD;
break;
case (CONFIG_SYS_FLASH_WORD_SIZE)FUJ_MANUFACT:
info->flash_id = FLASH_MAN_FUJ;
break;
case (CONFIG_SYS_FLASH_WORD_SIZE)SST_MANUFACT:
info->flash_id = FLASH_MAN_SST;
break;
case (CONFIG_SYS_FLASH_WORD_SIZE)STM_MANUFACT:
info->flash_id = FLASH_MAN_STM;
break;
case (CONFIG_SYS_FLASH_WORD_SIZE)EXCEL_MANUFACT:
info->flash_id = FLASH_MAN_EXCEL;
break;
case (CONFIG_SYS_FLASH_WORD_SIZE)MX_MANUFACT:
info->flash_id = FLASH_MAN_MX;
break;
default:
info->flash_id = FLASH_UNKNOWN;
info->sector_count = 0;
info->size = 0;
return (0); /* no or unknown flash */
}
value = addr2[CONFIG_SYS_FLASH_READ1]; /* device ID */
switch (value) {
case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV400T:
info->flash_id += FLASH_AM400T;
info->sector_count = 11;
info->size = 0x00080000;
break; /* => 0.5 MB */
case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV400B:
info->flash_id += FLASH_AM400B;
info->sector_count = 11;
info->size = 0x00080000;
break; /* => 0.5 MB */
case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV040B:
info->flash_id += FLASH_AM040;
info->sector_count = 8;
info->size = 0x0080000; /* => 0.5 MB */
break;
case (CONFIG_SYS_FLASH_WORD_SIZE)STM_ID_M29W040B:
info->flash_id += FLASH_AM040;
info->sector_count = 8;
info->size = 0x0080000; /* => 0,5 MB */
break;
case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV800T:
info->flash_id += FLASH_AM800T;
info->sector_count = 19;
info->size = 0x00100000;
break; /* => 1 MB */
case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV800B:
info->flash_id += FLASH_AM800B;
info->sector_count = 19;
info->size = 0x00100000;
break; /* => 1 MB */
case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV160T:
info->flash_id += FLASH_AM160T;
info->sector_count = 35;
info->size = 0x00200000;
break; /* => 2 MB */
case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV160B:
info->flash_id += FLASH_AM160B;
info->sector_count = 35;
info->size = 0x00200000;
break; /* => 2 MB */
case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320T:
info->flash_id += FLASH_AM320T;
info->sector_count = 71;
info->size = 0x00400000;
break; /* => 4 MB */
case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320B:
info->flash_id += FLASH_AM320B;
info->sector_count = 71;
info->size = 0x00400000;
break; /* => 4 MB */
case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL322T:
info->flash_id += FLASH_AMDL322T;
info->sector_count = 71;
info->size = 0x00400000;
break; /* => 4 MB */
case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL322B:
info->flash_id += FLASH_AMDL322B;
info->sector_count = 71;
info->size = 0x00400000;
break; /* => 4 MB */
case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL323T:
info->flash_id += FLASH_AMDL323T;
info->sector_count = 71;
info->size = 0x00400000;
break; /* => 4 MB */
case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL323B:
info->flash_id += FLASH_AMDL323B;
info->sector_count = 71;
info->size = 0x00400000;
break; /* => 4 MB */
case (CONFIG_SYS_FLASH_WORD_SIZE)SST_ID_xF020:
info->flash_id += FLASH_SST020;
info->sector_count = 64;
info->size = 0x00040000;
break; /* => 256 kB */
case (CONFIG_SYS_FLASH_WORD_SIZE)SST_ID_xF040:
info->flash_id += FLASH_SST040;
info->sector_count = 128;
info->size = 0x00080000;
break; /* => 512 kB */
default:
info->flash_id = FLASH_UNKNOWN;
return (0); /* => no or unknown flash */
}
/* set up sector start address table */
if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
((info->flash_id & FLASH_TYPEMASK) == FLASH_AM640U)) {
for (i = 0; i < info->sector_count; i++)
info->start[i] = base + (i * 0x00001000);
} else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) {
for (i = 0; i < info->sector_count; i++)
info->start[i] = base + (i * 0x00010000);
} else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322B) ||
((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323B) ||
((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324B)) {
/* set sector offsets for bottom boot block type */
for (i=0; i<8; ++i) { /* 8 x 8k boot sectors */
info->start[i] = base;
base += 8 << 10;
}
while (i < info->sector_count) { /* 64k regular sectors */
info->start[i] = base;
base += 64 << 10;
++i;
}
} else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322T) ||
((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323T) ||
((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324T)) {
/* set sector offsets for top boot block type */
base += info->size;
i = info->sector_count;
for (n=0; n<8; ++n) { /* 8 x 8k boot sectors */
base -= 8 << 10;
--i;
info->start[i] = base;
}
while (i > 0) { /* 64k regular sectors */
base -= 64 << 10;
--i;
info->start[i] = base;
}
} else {
if (info->flash_id & FLASH_BTYPE) {
/* set sector offsets for bottom boot block type */
info->start[0] = base + 0x00000000;
info->start[1] = base + 0x00004000;
info->start[2] = base + 0x00006000;
info->start[3] = base + 0x00008000;
for (i = 4; i < info->sector_count; i++) {
info->start[i] = base + (i * 0x00010000) - 0x00030000;
}
} else {
/* set sector offsets for top boot block type */
i = info->sector_count - 1;
info->start[i--] = base + info->size - 0x00004000;
info->start[i--] = base + info->size - 0x00006000;
info->start[i--] = base + info->size - 0x00008000;
for (; i >= 0; i--) {
info->start[i] = base + i * 0x00010000;
}
}
}
/* 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 */
addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
if ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_AMD)
info->protect[i] = 0;
else
info->protect[i] = addr2[CONFIG_SYS_FLASH_READ2] & 1;
}
/*
* Prevent writes to uninitialized FLASH.
*/
if (info->flash_id != FLASH_UNKNOWN) {
addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)info->start[0];
*addr2 = (CONFIG_SYS_FLASH_WORD_SIZE)0x00F000F0; /* reset bank */
}
return (info->size);
}
int flash_erase(flash_info_t *info, int s_first, int s_last)
{
volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
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 1;
}
if (info->flash_id == FLASH_UNKNOWN) {
printf ("Can't erase unknown flash type - aborted\n");
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();
/* Start erase on unprotected sectors */
for (sect = s_first; sect<=s_last; sect++) {
if (info->protect[sect] == 0) { /* not protected */
addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[sect]);
if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080;
addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00300030; /* sector erase */
/* re-enable interrupts if necessary */
if (flag) {
enable_interrupts();
flag = 0;
}
/* data polling for D7 */
start = get_timer (0);
while ((addr2[0] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) !=
(CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) {
if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
return (1);
}
} else {
if (sect == s_first) {
addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080;
addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
}
addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00300030; /* sector erase */
}
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 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[l_sect]);
while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) != (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) {
if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
printf ("Timeout\n");
return 1;
}
/* show that we're waiting */
if ((now - last) > 1000) { /* every second */
putc ('.');
last = now;
}
}
DONE:
/* reset to read mode */
addr = (CONFIG_SYS_FLASH_WORD_SIZE *)info->start[0];
addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00F000F0; /* 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)
{
volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *)dest;
volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *)&data;
ulong start;
int flag;
int i;
/* Check if Flash is (sufficiently) erased */
if ((*((vu_long *)dest) & data) != data)
return (2);
/* Disable interrupts which might cause a timeout here */
flag = disable_interrupts();
for (i=0; i<4/sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00A000A0;
dest2[i] = data2[i];
/* re-enable interrupts if necessary */
if (flag)
enable_interrupts();
/* data polling for D7 */
start = get_timer (0);
while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) !=
(data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080)) {
if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
return (1);
}
}
return (0);
}
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