3b57fe0a70
instead CFG_MONITOR_LEN is now only used to determine _at_compile_ _time_ (!) if the environment is embedded within the U-Boot image, or in a separate flash sector. * Cleanup CFG_DER #defines in config files (wd maintained only)
524 lines
14 KiB
C
524 lines
14 KiB
C
/*
|
|
* (C) Copyright 2000
|
|
* Marius Groeger <mgroeger@sysgo.de>
|
|
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
|
|
*
|
|
* (C) Copyright 2000, 2001
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*
|
|
* (C) Copyright 2001
|
|
* Advent Networks, Inc. <http://www.adventnetworks.com>
|
|
* Oliver Brown <oliverb@alumni.utexas.net>
|
|
*
|
|
*--------------------------------------------------------------------
|
|
* 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
|
|
*/
|
|
|
|
/*********************************************************************/
|
|
/* DESCRIPTION:
|
|
* This file contains the flash routines for the GW8260 board.
|
|
*
|
|
*
|
|
*
|
|
* MODULE DEPENDENCY:
|
|
* None
|
|
*
|
|
*
|
|
* RESTRICTIONS/LIMITATIONS:
|
|
*
|
|
* Only supports the following flash devices:
|
|
* AMD 29F080B
|
|
* AMD 29F016D
|
|
*
|
|
* Copyright (c) 2001, Advent Networks, Inc.
|
|
*
|
|
*/
|
|
/*********************************************************************/
|
|
|
|
#include <common.h>
|
|
#include <mpc8260.h>
|
|
|
|
flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
|
|
|
|
static ulong flash_get_size (vu_long *addr, flash_info_t *info);
|
|
static int write_word (flash_info_t *info, ulong dest, ulong data);
|
|
|
|
/*********************************************************************/
|
|
/* functions */
|
|
/*********************************************************************/
|
|
|
|
/*********************************************************************/
|
|
/* NAME: flash_init() - initializes flash banks */
|
|
/* */
|
|
/* DESCRIPTION: */
|
|
/* This function initializes the flash bank(s). */
|
|
/* */
|
|
/* RETURNS: */
|
|
/* The size in bytes of the flash */
|
|
/* */
|
|
/* RESTRICTIONS/LIMITATIONS: */
|
|
/* */
|
|
/* */
|
|
/*********************************************************************/
|
|
unsigned long flash_init (void)
|
|
{
|
|
unsigned long size;
|
|
int i;
|
|
|
|
/* Init: no FLASHes known */
|
|
for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
|
|
flash_info[i].flash_id = FLASH_UNKNOWN;
|
|
}
|
|
|
|
/* for now, only support the 4 MB Flash SIMM */
|
|
size = flash_get_size((vu_long *)CFG_FLASH0_BASE, &flash_info[0]);
|
|
|
|
/*
|
|
* protect monitor and environment sectors
|
|
*/
|
|
|
|
#if CFG_MONITOR_BASE >= CFG_FLASH0_BASE
|
|
flash_protect(FLAG_PROTECT_SET,
|
|
CFG_MONITOR_BASE,
|
|
CFG_MONITOR_BASE+monitor_flash_len-1,
|
|
&flash_info[0]);
|
|
#endif
|
|
|
|
#if (CFG_ENV_IS_IN_FLASH == 1) && defined(CFG_ENV_ADDR)
|
|
# ifndef CFG_ENV_SIZE
|
|
# define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
|
|
# endif
|
|
flash_protect(FLAG_PROTECT_SET,
|
|
CFG_ENV_ADDR,
|
|
CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
|
|
&flash_info[0]);
|
|
#endif
|
|
|
|
return (CFG_FLASH0_SIZE * 1024 * 1024); /*size*/
|
|
}
|
|
|
|
/*********************************************************************/
|
|
/* NAME: flash_print_info() - prints flash imformation */
|
|
/* */
|
|
/* DESCRIPTION: */
|
|
/* This function prints the flash information. */
|
|
/* */
|
|
/* INPUTS: */
|
|
/* flash_info_t *info - flash information structure */
|
|
/* */
|
|
/* OUTPUTS: */
|
|
/* Displays flash information to console */
|
|
/* */
|
|
/* RETURNS: */
|
|
/* None */
|
|
/* */
|
|
/* RESTRICTIONS/LIMITATIONS: */
|
|
/* */
|
|
/* */
|
|
/*********************************************************************/
|
|
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 0x1:
|
|
printf ("AMD ");
|
|
break;
|
|
default:
|
|
printf ("Unknown Vendor ");
|
|
break;
|
|
}
|
|
|
|
switch (info->flash_id & FLASH_TYPEMASK) {
|
|
case AMD_ID_F040B:
|
|
printf ("AM29F040B (4 Mbit)\n");
|
|
break;
|
|
case AMD_ID_F080B:
|
|
printf ("AM29F080B (8 Mbit)\n");
|
|
break;
|
|
case AMD_ID_F016D:
|
|
printf ("AM29F016D (16 Mbit)\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");
|
|
return;
|
|
}
|
|
|
|
/*********************************************************************/
|
|
/* The following code cannot be run from FLASH! */
|
|
/*********************************************************************/
|
|
|
|
/*********************************************************************/
|
|
/* NAME: flash_get_size() - detects the flash size */
|
|
/* */
|
|
/* DESCRIPTION: */
|
|
/* 1) Reads vendor ID and devices ID from the flash devices. */
|
|
/* 2) Initializes flash info struct. */
|
|
/* 3) Return the flash size */
|
|
/* */
|
|
/* INPUTS: */
|
|
/* vu_long *addr - pointer to start of flash */
|
|
/* flash_info_t *info - flash information structure */
|
|
/* */
|
|
/* OUTPUTS: */
|
|
/* None */
|
|
/* */
|
|
/* RETURNS: */
|
|
/* Size of the flash in bytes, or 0 if device id is unknown. */
|
|
/* */
|
|
/* RESTRICTIONS/LIMITATIONS: */
|
|
/* Only supports the following devices: */
|
|
/* AM29F080D */
|
|
/* AM29F016D */
|
|
/* */
|
|
/*********************************************************************/
|
|
static ulong flash_get_size (vu_long *addr, flash_info_t *info)
|
|
{
|
|
short i;
|
|
vu_long vendor, devid;
|
|
ulong base = (ulong)addr;
|
|
|
|
/*printf("addr = %08lx\n", (unsigned long)addr); */
|
|
|
|
/* Reset and Write auto select command: read Manufacturer ID */
|
|
addr[0x0000] = 0xf0f0f0f0;
|
|
addr[0x0555] = 0xAAAAAAAA;
|
|
addr[0x02AA] = 0x55555555;
|
|
addr[0x0555] = 0x90909090;
|
|
udelay (1000);
|
|
|
|
vendor = addr[0];
|
|
/*printf("vendor = %08lx\n", vendor); */
|
|
if (vendor != 0x01010101) {
|
|
info->size = 0;
|
|
goto out;
|
|
}
|
|
|
|
devid = addr[1];
|
|
/*printf("devid = %08lx\n", devid); */
|
|
|
|
if ((devid & 0xff) == AMD_ID_F080B) {
|
|
info->flash_id = (vendor & 0xff) << 16 | AMD_ID_F080B;
|
|
/* we have 16 sectors with 64KB each x 4 */
|
|
info->sector_count = 16;
|
|
info->size = 4 * info->sector_count * 64*1024;
|
|
} else if ((devid & 0xff) == AMD_ID_F016D){
|
|
info->flash_id = (vendor & 0xff) << 16 | AMD_ID_F016D;
|
|
/* we have 32 sectors with 64KB each x 4 */
|
|
info->sector_count = 32;
|
|
info->size = 4 * info->sector_count * 64*1024;
|
|
} else {
|
|
info->size = 0;
|
|
goto out;
|
|
}
|
|
/*printf("sector count = %08x\n", info->sector_count); */
|
|
/* check for protected sectors */
|
|
for (i = 0; i < info->sector_count; i++) {
|
|
/* sector base address */
|
|
info->start[i] = base + i * (info->size / info->sector_count);
|
|
/* read sector protection at sector address, (A7 .. A0) = 0x02 */
|
|
/* D0 = 1 if protected */
|
|
addr = (volatile unsigned long *)(info->start[i]);
|
|
info->protect[i] = addr[2] & 1;
|
|
}
|
|
|
|
/* reset command */
|
|
addr = (vu_long *)info->start[0];
|
|
|
|
out:
|
|
addr[0] = 0xf0f0f0f0;
|
|
|
|
/*printf("size = %08x\n", info->size); */
|
|
return info->size;
|
|
}
|
|
|
|
/*********************************************************************/
|
|
/* NAME: flash_erase() - erases flash by sector */
|
|
/* */
|
|
/* DESCRIPTION: */
|
|
/* This function erases flash sectors starting for s_first to */
|
|
/* s_last. */
|
|
/* */
|
|
/* INPUTS: */
|
|
/* flash_info_t *info - flash information structure */
|
|
/* int s_first - first sector to erase */
|
|
/* int s_last - last sector to erase */
|
|
/* */
|
|
/* OUTPUTS: */
|
|
/* None */
|
|
/* */
|
|
/* RETURNS: */
|
|
/* Returns 0 for success, 1 for failure. */
|
|
/* */
|
|
/* RESTRICTIONS/LIMITATIONS: */
|
|
/* */
|
|
/*********************************************************************/
|
|
int flash_erase (flash_info_t *info, int s_first, int s_last)
|
|
{
|
|
vu_long *addr = (vu_long*)(info->start[0]);
|
|
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;
|
|
}
|
|
|
|
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[0x0555] = 0xAAAAAAAA;
|
|
addr[0x02AA] = 0x55555555;
|
|
addr[0x0555] = 0x80808080;
|
|
addr[0x0555] = 0xAAAAAAAA;
|
|
addr[0x02AA] = 0x55555555;
|
|
udelay (100);
|
|
|
|
/* Start erase on unprotected sectors */
|
|
for (sect = s_first; sect <= s_last; sect++) {
|
|
if (info->protect[sect] == 0) { /* not protected */
|
|
addr = (vu_long*)(info->start[sect]);
|
|
addr[0] = 0x30303030;
|
|
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 = (vu_long*)(info->start[l_sect]);
|
|
while ((addr[0] & 0x80808080) != 0x80808080) {
|
|
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 */
|
|
serial_putc ('.');
|
|
last = now;
|
|
}
|
|
}
|
|
|
|
DONE:
|
|
/* reset to read mode */
|
|
addr = (volatile unsigned long *)info->start[0];
|
|
addr[0] = 0xF0F0F0F0; /* reset bank */
|
|
|
|
printf (" done\n");
|
|
return 0;
|
|
}
|
|
|
|
/*********************************************************************/
|
|
/* NAME: write_buff() - writes a buffer to flash */
|
|
/* */
|
|
/* DESCRIPTION: */
|
|
/* This function copies a buffer, *src, to flash. */
|
|
/* */
|
|
/* INPUTS: */
|
|
/* flash_info_t *info - flash information structure */
|
|
/* uchar *src - pointer to buffer to write to flash */
|
|
/* ulong addr - address to start write at */
|
|
/* ulong cnt - number of bytes to write to flash */
|
|
/* */
|
|
/* OUTPUTS: */
|
|
/* None */
|
|
/* */
|
|
/* RETURNS: */
|
|
/* 0 - OK */
|
|
/* 1 - write timeout */
|
|
/* 2 - Flash not erased */
|
|
/* */
|
|
/* RESTRICTIONS/LIMITATIONS: */
|
|
/* */
|
|
/*********************************************************************/
|
|
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));
|
|
}
|
|
|
|
/*********************************************************************/
|
|
/* NAME: write_word() - writes a word to flash */
|
|
/* */
|
|
/* DESCRIPTION: */
|
|
/* This writes a single word to flash. */
|
|
/* */
|
|
/* INPUTS: */
|
|
/* flash_info_t *info - flash information structure */
|
|
/* ulong dest - address to write */
|
|
/* ulong data - data to write */
|
|
/* */
|
|
/* OUTPUTS: */
|
|
/* None */
|
|
/* */
|
|
/* RETURNS: */
|
|
/* 0 - OK */
|
|
/* 1 - write timeout */
|
|
/* 2 - Flash not erased */
|
|
/* */
|
|
/* RESTRICTIONS/LIMITATIONS: */
|
|
/* */
|
|
/*********************************************************************/
|
|
static int write_word (flash_info_t *info, ulong dest, ulong data)
|
|
{
|
|
vu_long *addr = (vu_long*)(info->start[0]);
|
|
ulong start;
|
|
int flag;
|
|
|
|
/* 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();
|
|
|
|
addr[0x0555] = 0xAAAAAAAA;
|
|
addr[0x02AA] = 0x55555555;
|
|
addr[0x0555] = 0xA0A0A0A0;
|
|
|
|
*((vu_long *)dest) = data;
|
|
|
|
/* re-enable interrupts if necessary */
|
|
if (flag)
|
|
enable_interrupts();
|
|
|
|
/* data polling for D7 */
|
|
start = get_timer (0);
|
|
while ((*((vu_long *)dest) & 0x80808080) != (data & 0x80808080)) {
|
|
if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
|
|
return (1);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
/*********************************************************************/
|
|
/* End of flash.c */
|
|
/*********************************************************************/
|