mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-05 02:51:00 +00:00
277 lines
6 KiB
C
277 lines
6 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
|
|
*
|
|
* Hacked for the Hymod board by Murray.Jensen@cmst.csiro.au, 20-Oct-00
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <mpc8xx.h>
|
|
#include <galileo/gt64260R.h>
|
|
#include <galileo/memory.h>
|
|
#include "intel_flash.h"
|
|
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Protection Flags:
|
|
*/
|
|
#define FLAG_PROTECT_SET 0x01
|
|
#define FLAG_PROTECT_CLEAR 0x02
|
|
|
|
static void
|
|
bank_reset(flash_info_t *info, int sect)
|
|
{
|
|
bank_addr_t addrw, eaddrw;
|
|
|
|
addrw = (bank_addr_t)info->start[sect];
|
|
eaddrw = BANK_ADDR_NEXT_WORD(addrw);
|
|
|
|
while (addrw < eaddrw) {
|
|
#ifdef FLASH_DEBUG
|
|
printf(" writing reset cmd to addr 0x%08lx\n",
|
|
(unsigned long)addrw);
|
|
#endif
|
|
*addrw = BANK_CMD_RST;
|
|
addrw++;
|
|
}
|
|
}
|
|
|
|
static void
|
|
bank_erase_init(flash_info_t *info, int sect)
|
|
{
|
|
bank_addr_t addrw, saddrw, eaddrw;
|
|
int flag;
|
|
|
|
#ifdef FLASH_DEBUG
|
|
printf("0x%08x BANK_CMD_PROG\n", BANK_CMD_PROG);
|
|
printf("0x%08x BANK_CMD_ERASE1\n", BANK_CMD_ERASE1);
|
|
printf("0x%08x BANK_CMD_ERASE2\n", BANK_CMD_ERASE2);
|
|
printf("0x%08x BANK_CMD_CLR_STAT\n", BANK_CMD_CLR_STAT);
|
|
printf("0x%08x BANK_CMD_RST\n", BANK_CMD_RST);
|
|
printf("0x%08x BANK_STAT_RDY\n", BANK_STAT_RDY);
|
|
printf("0x%08x BANK_STAT_ERR\n", BANK_STAT_ERR);
|
|
#endif
|
|
|
|
saddrw = (bank_addr_t)info->start[sect];
|
|
eaddrw = BANK_ADDR_NEXT_WORD(saddrw);
|
|
|
|
#ifdef FLASH_DEBUG
|
|
printf("erasing sector %d, start addr = 0x%08lx "
|
|
"(bank next word addr = 0x%08lx)\n", sect,
|
|
(unsigned long)saddrw, (unsigned long)eaddrw);
|
|
#endif
|
|
|
|
/* Disable intrs which might cause a timeout here */
|
|
flag = disable_interrupts();
|
|
|
|
for (addrw = saddrw; addrw < eaddrw; addrw++) {
|
|
#ifdef FLASH_DEBUG
|
|
printf(" writing erase cmd to addr 0x%08lx\n",
|
|
(unsigned long)addrw);
|
|
#endif
|
|
*addrw = BANK_CMD_ERASE1;
|
|
*addrw = BANK_CMD_ERASE2;
|
|
}
|
|
|
|
/* re-enable interrupts if necessary */
|
|
if (flag)
|
|
enable_interrupts();
|
|
}
|
|
|
|
static int
|
|
bank_erase_poll(flash_info_t *info, int sect)
|
|
{
|
|
bank_addr_t addrw, saddrw, eaddrw;
|
|
int sectdone, haderr;
|
|
|
|
saddrw = (bank_addr_t)info->start[sect];
|
|
eaddrw = BANK_ADDR_NEXT_WORD(saddrw);
|
|
|
|
sectdone = 1;
|
|
haderr = 0;
|
|
|
|
for (addrw = saddrw; addrw < eaddrw; addrw++) {
|
|
bank_word_t stat = *addrw;
|
|
|
|
#ifdef FLASH_DEBUG
|
|
printf(" checking status at addr "
|
|
"0x%08x [0x%08x]\n",
|
|
(unsigned long)addrw, stat);
|
|
#endif
|
|
if ((stat & BANK_STAT_RDY) != BANK_STAT_RDY)
|
|
sectdone = 0;
|
|
else if ((stat & BANK_STAT_ERR) != 0) {
|
|
printf(" failed on sector %d "
|
|
"(stat = 0x%08x) at "
|
|
"address 0x%p\n",
|
|
sect, stat, addrw);
|
|
*addrw = BANK_CMD_CLR_STAT;
|
|
haderr = 1;
|
|
}
|
|
}
|
|
|
|
if (haderr)
|
|
return (-1);
|
|
else
|
|
return (sectdone);
|
|
}
|
|
|
|
int
|
|
write_word_intel(bank_addr_t addr, bank_word_t value)
|
|
{
|
|
bank_word_t stat;
|
|
ulong start;
|
|
int flag, retval;
|
|
|
|
/* Disable interrupts which might cause a timeout here */
|
|
flag = disable_interrupts();
|
|
|
|
*addr = BANK_CMD_PROG;
|
|
|
|
*addr = value;
|
|
|
|
/* re-enable interrupts if necessary */
|
|
if (flag)
|
|
enable_interrupts();
|
|
|
|
retval = 0;
|
|
|
|
/* data polling for D7 */
|
|
start = get_timer (0);
|
|
do {
|
|
if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
|
|
retval = 1;
|
|
goto done;
|
|
}
|
|
stat = *addr;
|
|
} while ((stat & BANK_STAT_RDY) != BANK_STAT_RDY);
|
|
|
|
if ((stat & BANK_STAT_ERR) != 0) {
|
|
printf("flash program failed (stat = 0x%08lx) "
|
|
"at address 0x%08lx\n", (ulong)stat, (ulong)addr);
|
|
*addr = BANK_CMD_CLR_STAT;
|
|
retval = 3;
|
|
}
|
|
|
|
done:
|
|
/* reset to read mode */
|
|
*addr = BANK_CMD_RST;
|
|
|
|
return (retval);
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
|
|
int
|
|
flash_erase_intel(flash_info_t *info, int s_first, int s_last)
|
|
{
|
|
int prot, sect, haderr;
|
|
ulong start, now, last;
|
|
|
|
#ifdef FLASH_DEBUG
|
|
printf("\nflash_erase: erase %d sectors (%d to %d incl.) from\n"
|
|
" Bank # %d: ", s_last - s_first + 1, s_first, s_last,
|
|
(info - flash_info) + 1);
|
|
flash_print_info(info);
|
|
#endif
|
|
|
|
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 sector%s will not be erased!\n",
|
|
prot, (prot > 1 ? "s" : ""));
|
|
}
|
|
|
|
start = get_timer (0);
|
|
last = 0;
|
|
haderr = 0;
|
|
|
|
for (sect = s_first; sect <= s_last; sect++) {
|
|
if (info->protect[sect] == 0) { /* not protected */
|
|
ulong estart;
|
|
int sectdone;
|
|
|
|
bank_erase_init(info, sect);
|
|
|
|
/* wait at least 80us - let's wait 1 ms */
|
|
udelay (1000);
|
|
|
|
estart = get_timer(start);
|
|
|
|
do {
|
|
now = get_timer(start);
|
|
|
|
if (now - estart > CFG_FLASH_ERASE_TOUT) {
|
|
printf ("Timeout (sect %d)\n", sect);
|
|
haderr = 1;
|
|
break;
|
|
}
|
|
|
|
#ifndef FLASH_DEBUG
|
|
/* show that we're waiting */
|
|
if ((now - last) > 1000) { /* every second */
|
|
putc ('.');
|
|
last = now;
|
|
}
|
|
#endif
|
|
|
|
sectdone = bank_erase_poll(info, sect);
|
|
|
|
if (sectdone < 0) {
|
|
haderr = 1;
|
|
break;
|
|
}
|
|
|
|
} while (!sectdone);
|
|
|
|
if (haderr)
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (haderr > 0)
|
|
printf (" failed\n");
|
|
else
|
|
printf (" done\n");
|
|
|
|
/* reset to read mode */
|
|
for (sect = s_first; sect <= s_last; sect++) {
|
|
if (info->protect[sect] == 0) { /* not protected */
|
|
bank_reset(info, sect);
|
|
}
|
|
}
|
|
return haderr;
|
|
}
|