387 lines
9.0 KiB
C
387 lines
9.0 KiB
C
/*
|
|
* (C) Copyright 2001, 2002
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*
|
|
* Flash Routines for Intel devices
|
|
*
|
|
*--------------------------------------------------------------------
|
|
* 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[CONFIG_SYS_MAX_FLASH_BANKS];
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
ulong flash_get_size (volatile unsigned long *baseaddr,
|
|
flash_info_t * info)
|
|
{
|
|
short i;
|
|
unsigned long flashtest_h, flashtest_l;
|
|
|
|
info->sector_count = info->size = 0;
|
|
info->flash_id = FLASH_UNKNOWN;
|
|
|
|
/* Write query command sequence and test FLASH answer
|
|
*/
|
|
baseaddr[0] = 0x00980098;
|
|
baseaddr[1] = 0x00980098;
|
|
|
|
flashtest_h = baseaddr[0]; /* manufacturer ID */
|
|
flashtest_l = baseaddr[1];
|
|
|
|
if (flashtest_h != INTEL_MANUFACT || flashtest_l != INTEL_MANUFACT)
|
|
return (0); /* no or unknown flash */
|
|
|
|
flashtest_h = baseaddr[2]; /* device ID */
|
|
flashtest_l = baseaddr[3];
|
|
|
|
if (flashtest_h != flashtest_l)
|
|
return (0);
|
|
|
|
switch (flashtest_h) {
|
|
case INTEL_ID_28F160C3B:
|
|
info->flash_id = FLASH_28F160C3B;
|
|
info->sector_count = 39;
|
|
info->size = 0x00800000; /* 4 * 2 MB = 8 MB */
|
|
break;
|
|
case INTEL_ID_28F160F3B:
|
|
info->flash_id = FLASH_28F160F3B;
|
|
info->sector_count = 39;
|
|
info->size = 0x00800000; /* 4 * 2 MB = 8 MB */
|
|
break;
|
|
case INTEL_ID_28F640C3B:
|
|
info->flash_id = FLASH_28F640C3B;
|
|
info->sector_count = 135;
|
|
info->size = 0x02000000; /* 16 * 2 MB = 32 MB */
|
|
break;
|
|
default:
|
|
return (0); /* no or unknown flash */
|
|
}
|
|
|
|
info->flash_id |= INTEL_MANUFACT << 16; /* set manufacturer offset */
|
|
|
|
if (info->flash_id & FLASH_BTYPE) {
|
|
volatile unsigned long *tmp = baseaddr;
|
|
|
|
/* set up sector start adress table (bottom sector type)
|
|
* AND unlock the sectors (if our chip is 160C3 or 640C3)
|
|
*/
|
|
for (i = 0; i < info->sector_count; i++) {
|
|
if (((info->flash_id & FLASH_TYPEMASK) == FLASH_28F160C3B) ||
|
|
((info->flash_id & FLASH_TYPEMASK) == FLASH_28F640C3B)) {
|
|
tmp[0] = 0x00600060;
|
|
tmp[1] = 0x00600060;
|
|
tmp[0] = 0x00D000D0;
|
|
tmp[1] = 0x00D000D0;
|
|
}
|
|
info->start[i] = (uint) tmp;
|
|
tmp += i < 8 ? 0x2000 : 0x10000; /* pointer arith */
|
|
}
|
|
}
|
|
|
|
memset (info->protect, 0, info->sector_count);
|
|
|
|
baseaddr[0] = 0x00FF00FF;
|
|
baseaddr[1] = 0x00FF00FF;
|
|
|
|
return (info->size);
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
unsigned long flash_init (void)
|
|
{
|
|
unsigned long size_b0 = 0;
|
|
int i;
|
|
|
|
/* 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 (only one bank) */
|
|
|
|
size_b0 = flash_get_size ((ulong *) CONFIG_SYS_FLASH0_BASE, &flash_info[0]);
|
|
if (flash_info[0].flash_id == FLASH_UNKNOWN || size_b0 == 0) {
|
|
printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
|
|
size_b0, size_b0 >> 20);
|
|
}
|
|
|
|
/* protect monitor and environment sectors
|
|
*/
|
|
|
|
#ifndef CONFIG_BOOT_ROM
|
|
/* If U-Boot is booted from ROM the CONFIG_SYS_MONITOR_BASE > CONFIG_SYS_FLASH0_BASE
|
|
* but we shouldn't protect it.
|
|
*/
|
|
|
|
# if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH0_BASE
|
|
flash_protect (FLAG_PROTECT_SET,
|
|
CONFIG_SYS_MONITOR_BASE,
|
|
CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1, &flash_info[0]
|
|
);
|
|
# endif
|
|
#endif /* CONFIG_BOOT_ROM */
|
|
|
|
#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR)
|
|
# ifndef CONFIG_ENV_SIZE
|
|
# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
|
|
# endif
|
|
flash_protect (FLAG_PROTECT_SET,
|
|
CONFIG_ENV_ADDR,
|
|
CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0]);
|
|
#endif
|
|
|
|
return (size_b0);
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
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 >> 16) & 0xff) {
|
|
case 0x89:
|
|
printf ("INTEL ");
|
|
break;
|
|
default:
|
|
printf ("Unknown Vendor ");
|
|
break;
|
|
}
|
|
|
|
switch (info->flash_id & FLASH_TYPEMASK) {
|
|
case FLASH_28F160C3B:
|
|
printf ("28F160C3B (16 M, bottom sector)\n");
|
|
break;
|
|
case FLASH_28F160F3B:
|
|
printf ("28F160F3B (16 M, bottom sector)\n");
|
|
break;
|
|
case FLASH_28F640C3B:
|
|
printf ("28F640C3B (64 M, bottom 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");
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
int flash_erase (flash_info_t * info, int s_first, int s_last)
|
|
{
|
|
int flag, prot, 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;
|
|
}
|
|
|
|
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");
|
|
}
|
|
|
|
/* Start erase on unprotected sectors
|
|
*/
|
|
for (sect = s_first; sect <= s_last; sect++) {
|
|
volatile ulong *addr =
|
|
(volatile unsigned long *) info->start[sect];
|
|
|
|
start = get_timer (0);
|
|
last = start;
|
|
if (info->protect[sect] == 0) {
|
|
/* Disable interrupts which might cause a timeout here
|
|
*/
|
|
flag = disable_interrupts ();
|
|
|
|
/* Erase the block
|
|
*/
|
|
addr[0] = 0x00200020;
|
|
addr[1] = 0x00200020;
|
|
addr[0] = 0x00D000D0;
|
|
addr[1] = 0x00D000D0;
|
|
|
|
/* re-enable interrupts if necessary
|
|
*/
|
|
if (flag)
|
|
enable_interrupts ();
|
|
|
|
/* wait at least 80us - let's wait 1 ms
|
|
*/
|
|
udelay (1000);
|
|
|
|
last = start;
|
|
while ((addr[0] & 0x00800080) != 0x00800080 ||
|
|
(addr[1] & 0x00800080) != 0x00800080) {
|
|
if ((now = get_timer (start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
|
|
printf ("Timeout (erase suspended!)\n");
|
|
/* Suspend erase
|
|
*/
|
|
addr[0] = 0x00B000B0;
|
|
addr[1] = 0x00B000B0;
|
|
goto DONE;
|
|
}
|
|
/* show that we're waiting
|
|
*/
|
|
if ((now - last) > 1000) { /* every second */
|
|
serial_putc ('.');
|
|
last = now;
|
|
}
|
|
}
|
|
if (addr[0] & 0x00220022 || addr[1] & 0x00220022) {
|
|
printf ("*** ERROR: erase failed!\n");
|
|
goto DONE;
|
|
}
|
|
}
|
|
/* Clear status register and reset to read mode
|
|
*/
|
|
addr[0] = 0x00500050;
|
|
addr[1] = 0x00500050;
|
|
addr[0] = 0x00FF00FF;
|
|
addr[1] = 0x00FF00FF;
|
|
}
|
|
|
|
printf (" done\n");
|
|
|
|
DONE:
|
|
return 0;
|
|
}
|
|
|
|
static int write_word (flash_info_t *, volatile unsigned long *, ulong);
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* 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 v;
|
|
int i, l, cc = cnt, res = 0;
|
|
|
|
|
|
for (v=0; cc > 0; addr += 4, cc -= 4 - l) {
|
|
l = (addr & 3);
|
|
addr &= ~3;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
v = (v << 8) + (i < l || i - l >= cc ?
|
|
*((unsigned char *) addr + i) : *src++);
|
|
}
|
|
|
|
if ((res = write_word (info, (volatile unsigned long *) addr, v)) != 0)
|
|
break;
|
|
}
|
|
|
|
return (res);
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Write a word to Flash, returns:
|
|
* 0 - OK
|
|
* 1 - write timeout
|
|
* 2 - Flash not erased
|
|
*/
|
|
static int write_word (flash_info_t * info, volatile unsigned long *addr,
|
|
ulong data)
|
|
{
|
|
int flag, res = 0;
|
|
ulong start;
|
|
|
|
/* Check if Flash is (sufficiently) erased
|
|
*/
|
|
if ((*addr & data) != data)
|
|
return (2);
|
|
|
|
/* Disable interrupts which might cause a timeout here
|
|
*/
|
|
flag = disable_interrupts ();
|
|
|
|
*addr = 0x00400040;
|
|
*addr = data;
|
|
|
|
/* re-enable interrupts if necessary
|
|
*/
|
|
if (flag)
|
|
enable_interrupts ();
|
|
|
|
start = get_timer (0);
|
|
while ((*addr & 0x00800080) != 0x00800080) {
|
|
if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
|
|
/* Suspend program
|
|
*/
|
|
*addr = 0x00B000B0;
|
|
res = 1;
|
|
goto OUT;
|
|
}
|
|
}
|
|
|
|
if (*addr & 0x00220022) {
|
|
printf ("*** ERROR: program failed!\n");
|
|
res = 1;
|
|
}
|
|
|
|
OUT:
|
|
/* Clear status register and reset to read mode
|
|
*/
|
|
*addr = 0x00500050;
|
|
*addr = 0x00FF00FF;
|
|
|
|
return (res);
|
|
}
|