mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-19 11:18:28 +00:00
476 lines
10 KiB
C
476 lines
10 KiB
C
/*
|
|
* (C) Copyright 2002
|
|
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
|
|
* Marius Groeger <mgroeger@sysgo.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>
|
|
|
|
ulong myflush(void);
|
|
|
|
|
|
#define FLASH_BANK_SIZE 0x800000
|
|
#define MAIN_SECT_SIZE 0x20000
|
|
#define PARAM_SECT_SIZE 0x4000
|
|
|
|
/* puzzle magic for lart
|
|
* data_*_flash are def'd in flashasm.S
|
|
*/
|
|
|
|
extern u32 data_from_flash(u32);
|
|
extern u32 data_to_flash(u32);
|
|
|
|
#define PUZZLE_FROM_FLASH(x) data_from_flash((x))
|
|
#define PUZZLE_TO_FLASH(x) data_to_flash((x))
|
|
|
|
flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
|
|
|
|
|
|
#define CMD_READ_ARRAY 0x00FF00FF
|
|
#define CMD_IDENTIFY 0x00900090
|
|
#define CMD_ERASE_SETUP 0x00200020
|
|
#define CMD_ERASE_CONFIRM 0x00D000D0
|
|
#define CMD_PROGRAM 0x00400040
|
|
#define CMD_RESUME 0x00D000D0
|
|
#define CMD_SUSPEND 0x00B000B0
|
|
#define CMD_STATUS_READ 0x00700070
|
|
#define CMD_STATUS_RESET 0x00500050
|
|
|
|
#define BIT_BUSY 0x00800080
|
|
#define BIT_ERASE_SUSPEND 0x00400040
|
|
#define BIT_ERASE_ERROR 0x00200020
|
|
#define BIT_PROGRAM_ERROR 0x00100010
|
|
#define BIT_VPP_RANGE_ERROR 0x00080008
|
|
#define BIT_PROGRAM_SUSPEND 0x00040004
|
|
#define BIT_PROTECT_ERROR 0x00020002
|
|
#define BIT_UNDEFINED 0x00010001
|
|
|
|
#define BIT_SEQUENCE_ERROR 0x00300030
|
|
#define BIT_TIMEOUT 0x80000000
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
|
|
ulong flash_init(void)
|
|
{
|
|
int i, j;
|
|
ulong size = 0;
|
|
|
|
for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++)
|
|
{
|
|
ulong flashbase = 0;
|
|
flash_info[i].flash_id =
|
|
(INTEL_MANUFACT & FLASH_VENDMASK) |
|
|
(INTEL_ID_28F160F3B & FLASH_TYPEMASK);
|
|
flash_info[i].size = FLASH_BANK_SIZE;
|
|
flash_info[i].sector_count = CONFIG_SYS_MAX_FLASH_SECT;
|
|
memset(flash_info[i].protect, 0, CONFIG_SYS_MAX_FLASH_SECT);
|
|
if (i == 0)
|
|
flashbase = PHYS_FLASH_1;
|
|
else
|
|
panic("configured too many flash banks!\n");
|
|
for (j = 0; j < flash_info[i].sector_count; j++)
|
|
{
|
|
if (j <= 7)
|
|
{
|
|
flash_info[i].start[j] = flashbase + j * PARAM_SECT_SIZE;
|
|
}
|
|
else
|
|
{
|
|
flash_info[i].start[j] = flashbase + (j - 7)*MAIN_SECT_SIZE;
|
|
}
|
|
}
|
|
size += flash_info[i].size;
|
|
}
|
|
|
|
/* Protect monitor and environment sectors
|
|
*/
|
|
flash_protect(FLAG_PROTECT_SET,
|
|
CONFIG_SYS_FLASH_BASE,
|
|
CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1,
|
|
&flash_info[0]);
|
|
|
|
flash_protect(FLAG_PROTECT_SET,
|
|
CONFIG_ENV_ADDR,
|
|
CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
|
|
&flash_info[0]);
|
|
|
|
return size;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
void flash_print_info (flash_info_t *info)
|
|
{
|
|
int i;
|
|
|
|
switch (info->flash_id & FLASH_VENDMASK)
|
|
{
|
|
case (INTEL_MANUFACT & FLASH_VENDMASK):
|
|
printf("Intel: ");
|
|
break;
|
|
default:
|
|
printf("Unknown Vendor ");
|
|
break;
|
|
}
|
|
|
|
switch (info->flash_id & FLASH_TYPEMASK)
|
|
{
|
|
case (INTEL_ID_28F160F3B & FLASH_TYPEMASK):
|
|
printf("2x 28F160F3B (16Mbit)\n");
|
|
break;
|
|
default:
|
|
printf("Unknown Chip Type\n");
|
|
goto Done;
|
|
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");
|
|
|
|
Done:
|
|
;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
|
|
int flash_error (ulong code)
|
|
{
|
|
/* Check bit patterns */
|
|
/* SR.7=0 is busy, SR.7=1 is ready */
|
|
/* all other flags indicate error on 1 */
|
|
/* SR.0 is undefined */
|
|
/* Timeout is our faked flag */
|
|
|
|
/* sequence is described in Intel 290644-005 document */
|
|
|
|
/* check Timeout */
|
|
if (code & BIT_TIMEOUT)
|
|
{
|
|
printf ("Timeout\n");
|
|
return ERR_TIMOUT;
|
|
}
|
|
|
|
/* check Busy, SR.7 */
|
|
if (~code & BIT_BUSY)
|
|
{
|
|
printf ("Busy\n");
|
|
return ERR_PROG_ERROR;
|
|
}
|
|
|
|
/* check Vpp low, SR.3 */
|
|
if (code & BIT_VPP_RANGE_ERROR)
|
|
{
|
|
printf ("Vpp range error\n");
|
|
return ERR_PROG_ERROR;
|
|
}
|
|
|
|
/* check Device Protect Error, SR.1 */
|
|
if (code & BIT_PROTECT_ERROR)
|
|
{
|
|
printf ("Device protect error\n");
|
|
return ERR_PROG_ERROR;
|
|
}
|
|
|
|
/* check Command Seq Error, SR.4 & SR.5 */
|
|
if (code & BIT_SEQUENCE_ERROR)
|
|
{
|
|
printf ("Command seqence error\n");
|
|
return ERR_PROG_ERROR;
|
|
}
|
|
|
|
/* check Block Erase Error, SR.5 */
|
|
if (code & BIT_ERASE_ERROR)
|
|
{
|
|
printf ("Block erase error\n");
|
|
return ERR_PROG_ERROR;
|
|
}
|
|
|
|
/* check Program Error, SR.4 */
|
|
if (code & BIT_PROGRAM_ERROR)
|
|
{
|
|
printf ("Program error\n");
|
|
return ERR_PROG_ERROR;
|
|
}
|
|
|
|
/* check Block Erase Suspended, SR.6 */
|
|
if (code & BIT_ERASE_SUSPEND)
|
|
{
|
|
printf ("Block erase suspended\n");
|
|
return ERR_PROG_ERROR;
|
|
}
|
|
|
|
/* check Program Suspended, SR.2 */
|
|
if (code & BIT_PROGRAM_SUSPEND)
|
|
{
|
|
printf ("Program suspended\n");
|
|
return ERR_PROG_ERROR;
|
|
}
|
|
|
|
/* OK, no error */
|
|
return ERR_OK;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
|
|
int flash_erase (flash_info_t *info, int s_first, int s_last)
|
|
{
|
|
ulong result;
|
|
int iflag, cflag, prot, sect;
|
|
int rc = ERR_OK;
|
|
ulong start;
|
|
|
|
/* first look for protection bits */
|
|
|
|
if (info->flash_id == FLASH_UNKNOWN)
|
|
return ERR_UNKNOWN_FLASH_TYPE;
|
|
|
|
if ((s_first < 0) || (s_first > s_last)) {
|
|
return ERR_INVAL;
|
|
}
|
|
|
|
if ((info->flash_id & FLASH_VENDMASK) !=
|
|
(INTEL_MANUFACT & FLASH_VENDMASK)) {
|
|
return ERR_UNKNOWN_FLASH_VENDOR;
|
|
}
|
|
|
|
prot = 0;
|
|
for (sect=s_first; sect<=s_last; ++sect) {
|
|
if (info->protect[sect]) {
|
|
prot++;
|
|
}
|
|
}
|
|
if (prot)
|
|
return ERR_PROTECTED;
|
|
|
|
/*
|
|
* Disable interrupts which might cause a timeout
|
|
* here. Remember that our exception vectors are
|
|
* at address 0 in the flash, and we don't want a
|
|
* (ticker) exception to happen while the flash
|
|
* chip is in programming mode.
|
|
*/
|
|
cflag = icache_status();
|
|
icache_disable();
|
|
iflag = disable_interrupts();
|
|
|
|
/* Start erase on unprotected sectors */
|
|
for (sect = s_first; sect<=s_last && !ctrlc(); sect++)
|
|
{
|
|
printf("Erasing sector %2d ... ", sect);
|
|
|
|
/* arm simple, non interrupt dependent timer */
|
|
start = get_timer(0);
|
|
|
|
if (info->protect[sect] == 0)
|
|
{ /* not protected */
|
|
vu_long *addr = (vu_long *)(info->start[sect]);
|
|
|
|
*addr = PUZZLE_TO_FLASH(CMD_STATUS_RESET);
|
|
*addr = PUZZLE_TO_FLASH(CMD_ERASE_SETUP);
|
|
*addr = PUZZLE_TO_FLASH(CMD_ERASE_CONFIRM);
|
|
|
|
/* wait until flash is ready */
|
|
do
|
|
{
|
|
/* check timeout */
|
|
if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT)
|
|
{
|
|
*addr = PUZZLE_TO_FLASH(CMD_SUSPEND);
|
|
result = BIT_TIMEOUT;
|
|
break;
|
|
}
|
|
|
|
result = PUZZLE_FROM_FLASH(*addr);
|
|
} while (~result & BIT_BUSY);
|
|
|
|
*addr = PUZZLE_TO_FLASH(CMD_READ_ARRAY);
|
|
|
|
if ((rc = flash_error(result)) != ERR_OK)
|
|
goto outahere;
|
|
|
|
printf("ok.\n");
|
|
}
|
|
else /* it was protected */
|
|
{
|
|
printf("protected!\n");
|
|
}
|
|
}
|
|
|
|
if (ctrlc())
|
|
printf("User Interrupt!\n");
|
|
|
|
outahere:
|
|
/* allow flash to settle - wait 10 ms */
|
|
udelay_masked(10000);
|
|
|
|
if (iflag)
|
|
enable_interrupts();
|
|
|
|
if (cflag)
|
|
icache_enable();
|
|
|
|
return rc;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Copy memory to flash
|
|
*/
|
|
|
|
static int write_word (flash_info_t *info, ulong dest, ulong data)
|
|
{
|
|
vu_long *addr = (vu_long *)dest;
|
|
ulong result;
|
|
int rc = ERR_OK;
|
|
int cflag, iflag;
|
|
ulong start;
|
|
|
|
/* Check if Flash is (sufficiently) erased
|
|
*/
|
|
result = PUZZLE_FROM_FLASH(*addr);
|
|
if ((result & data) != data)
|
|
return ERR_NOT_ERASED;
|
|
|
|
/*
|
|
* Disable interrupts which might cause a timeout
|
|
* here. Remember that our exception vectors are
|
|
* at address 0 in the flash, and we don't want a
|
|
* (ticker) exception to happen while the flash
|
|
* chip is in programming mode.
|
|
*/
|
|
cflag = icache_status();
|
|
icache_disable();
|
|
iflag = disable_interrupts();
|
|
|
|
*addr = PUZZLE_TO_FLASH(CMD_STATUS_RESET);
|
|
*addr = PUZZLE_TO_FLASH(CMD_PROGRAM);
|
|
*addr = data;
|
|
|
|
/* arm simple, non interrupt dependent timer */
|
|
start = get_timer(0);
|
|
|
|
/* wait until flash is ready */
|
|
do
|
|
{
|
|
/* check timeout */
|
|
if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT)
|
|
{
|
|
*addr = PUZZLE_TO_FLASH(CMD_SUSPEND);
|
|
result = BIT_TIMEOUT;
|
|
break;
|
|
}
|
|
|
|
result = PUZZLE_FROM_FLASH(*addr);
|
|
} while (~result & BIT_BUSY);
|
|
|
|
*addr = PUZZLE_TO_FLASH(CMD_READ_ARRAY);
|
|
|
|
rc = flash_error(result);
|
|
|
|
if (iflag)
|
|
enable_interrupts();
|
|
|
|
if (cflag)
|
|
icache_enable();
|
|
|
|
return rc;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Copy memory to flash.
|
|
*/
|
|
|
|
int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
|
|
{
|
|
ulong cp, wp, data;
|
|
int l;
|
|
int i, 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 << 24);
|
|
}
|
|
for (; i<4 && cnt>0; ++i) {
|
|
data = (data >> 8) | (*src++ << 24);
|
|
--cnt;
|
|
++cp;
|
|
}
|
|
for (; cnt==0 && i<4; ++i, ++cp) {
|
|
data = (data >> 8) | (*(uchar *)cp << 24);
|
|
}
|
|
|
|
if ((rc = write_word(info, wp, data)) != 0) {
|
|
return (rc);
|
|
}
|
|
wp += 4;
|
|
}
|
|
|
|
/*
|
|
* handle word aligned part
|
|
*/
|
|
while (cnt >= 4) {
|
|
data = *((vu_long*)src);
|
|
if ((rc = write_word(info, wp, data)) != 0) {
|
|
return (rc);
|
|
}
|
|
src += 4;
|
|
wp += 4;
|
|
cnt -= 4;
|
|
}
|
|
|
|
if (cnt == 0) {
|
|
return ERR_OK;
|
|
}
|
|
|
|
/*
|
|
* handle unaligned tail bytes
|
|
*/
|
|
data = 0;
|
|
for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
|
|
data = (data >> 8) | (*src++ << 24);
|
|
--cnt;
|
|
}
|
|
for (; i<4; ++i, ++cp) {
|
|
data = (data >> 8) | (*(uchar *)cp << 24);
|
|
}
|
|
|
|
return write_word(info, wp, data);
|
|
}
|