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/*
* (C) Copyright 2000
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
*
* Hacked for the marvell db64360 eval board by
* Ingo Assmus <ingo.assmus@keymile.com>
*/
#include <common.h>
#include <mpc8xx.h>
#include "../include/mv_gen_reg.h"
#include "../include/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) > CONFIG_SYS_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 > CONFIG_SYS_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;
}
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