mirror of
https://github.com/u-boot/u-boot.git
synced 2024-11-29 07:33:29 +08:00
27b207fd0a
applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
660 lines
14 KiB
C
660 lines
14 KiB
C
/*
|
|
* (C) Copyright 2001
|
|
* Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
|
|
*
|
|
* (C) Copyright 2002
|
|
* 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
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <flash.h>
|
|
#include <asm/io.h>
|
|
#include <memio.h>
|
|
|
|
/*---------------------------------------------------------------------*/
|
|
#undef DEBUG_FLASH
|
|
|
|
#ifdef DEBUG_FLASH
|
|
#define DEBUGF(fmt,args...) printf(fmt ,##args)
|
|
#else
|
|
#define DEBUGF(fmt,args...)
|
|
#endif
|
|
/*---------------------------------------------------------------------*/
|
|
|
|
flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
|
|
|
|
static ulong flash_get_size (ulong addr, flash_info_t *info);
|
|
static int flash_get_offsets (ulong base, flash_info_t *info);
|
|
static int write_word (flash_info_t *info, ulong dest, ulong data);
|
|
static void flash_reset (ulong addr);
|
|
|
|
int flash_xd_nest;
|
|
|
|
static void flash_to_xd(void)
|
|
{
|
|
unsigned char x;
|
|
|
|
flash_xd_nest ++;
|
|
|
|
if (flash_xd_nest == 1)
|
|
{
|
|
DEBUGF("Flash on XD\n");
|
|
x = pci_read_cfg_byte(0, 0, 0x74);
|
|
pci_write_cfg_byte(0, 0, 0x74, x|1);
|
|
}
|
|
}
|
|
|
|
static void flash_to_mem(void)
|
|
{
|
|
unsigned char x;
|
|
|
|
flash_xd_nest --;
|
|
|
|
if (flash_xd_nest == 0)
|
|
{
|
|
DEBUGF("Flash on memory bus\n");
|
|
x = pci_read_cfg_byte(0, 0, 0x74);
|
|
pci_write_cfg_byte(0, 0, 0x74, x&0xFE);
|
|
}
|
|
}
|
|
|
|
unsigned long flash_init_old(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < CFG_MAX_FLASH_BANKS; i++)
|
|
{
|
|
flash_info[i].flash_id = FLASH_UNKNOWN;
|
|
flash_info[i].sector_count = 0;
|
|
flash_info[i].size = 0;
|
|
}
|
|
|
|
|
|
return 1;
|
|
}
|
|
|
|
unsigned long flash_init (void)
|
|
{
|
|
unsigned int i;
|
|
unsigned long flash_size = 0;
|
|
|
|
flash_xd_nest = 0;
|
|
|
|
flash_to_xd();
|
|
|
|
/* Init: no FLASHes known */
|
|
for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
|
|
flash_info[i].flash_id = FLASH_UNKNOWN;
|
|
flash_info[i].sector_count = 0;
|
|
flash_info[i].size = 0;
|
|
}
|
|
|
|
DEBUGF("\n## Get flash size @ 0x%08x\n", CFG_FLASH_BASE);
|
|
|
|
flash_size = flash_get_size (CFG_FLASH_BASE, flash_info);
|
|
|
|
DEBUGF("## Flash bank size: %08lx\n", flash_size);
|
|
|
|
if (flash_size) {
|
|
#if CFG_MONITOR_BASE >= CFG_FLASH_BASE && \
|
|
CFG_MONITOR_BASE < CFG_FLASH_BASE + CFG_FLASH_MAX_SIZE
|
|
/* monitor protection ON by default */
|
|
flash_protect(FLAG_PROTECT_SET,
|
|
CFG_MONITOR_BASE,
|
|
CFG_MONITOR_BASE + CFG_MONITOR_LEN - 1,
|
|
&flash_info[0]);
|
|
#endif
|
|
|
|
#ifdef CFG_ENV_IS_IN_FLASH
|
|
/* ENV protection ON by default */
|
|
flash_protect(FLAG_PROTECT_SET,
|
|
CFG_ENV_ADDR,
|
|
CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
|
|
&flash_info[0]);
|
|
#endif
|
|
|
|
} else {
|
|
printf ("Warning: the BOOT Flash is not initialised !");
|
|
}
|
|
|
|
flash_to_mem();
|
|
|
|
return flash_size;
|
|
}
|
|
|
|
/*
|
|
* The following code cannot be run from FLASH!
|
|
*/
|
|
static ulong flash_get_size (ulong addr, flash_info_t *info)
|
|
{
|
|
short i;
|
|
uchar value;
|
|
uchar *x = (uchar *)addr;
|
|
|
|
flash_to_xd();
|
|
|
|
/* Write auto select command: read Manufacturer ID */
|
|
x[0x0555] = 0xAA;
|
|
__asm volatile ("sync\n eieio");
|
|
x[0x02AA] = 0x55;
|
|
__asm volatile ("sync\n eieio");
|
|
x[0x0555] = 0x90;
|
|
__asm volatile ("sync\n eieio");
|
|
|
|
value = x[0];
|
|
__asm volatile ("sync\n eieio");
|
|
|
|
DEBUGF("Manuf. ID @ 0x%08lx: 0x%08x\n", (ulong)addr, value);
|
|
|
|
switch (value | (value << 16)) {
|
|
case AMD_MANUFACT:
|
|
info->flash_id = FLASH_MAN_AMD;
|
|
break;
|
|
|
|
case FUJ_MANUFACT:
|
|
info->flash_id = FLASH_MAN_FUJ;
|
|
break;
|
|
|
|
case STM_MANUFACT:
|
|
info->flash_id = FLASH_MAN_STM;
|
|
break;
|
|
|
|
default:
|
|
info->flash_id = FLASH_UNKNOWN;
|
|
info->sector_count = 0;
|
|
info->size = 0;
|
|
flash_reset (addr);
|
|
return 0;
|
|
}
|
|
|
|
value = x[1];
|
|
__asm volatile ("sync\n eieio");
|
|
|
|
DEBUGF("Device ID @ 0x%08lx: 0x%08x\n", addr+1, value);
|
|
|
|
switch (value) {
|
|
case AMD_ID_F040B:
|
|
DEBUGF("Am29F040B\n");
|
|
info->flash_id += FLASH_AM040;
|
|
info->sector_count = 8;
|
|
info->size = 0x00080000;
|
|
break; /* => 512 kB */
|
|
|
|
case AMD_ID_LV040B:
|
|
DEBUGF("Am29LV040B\n");
|
|
info->flash_id += FLASH_AM040;
|
|
info->sector_count = 8;
|
|
info->size = 0x00080000;
|
|
break; /* => 512 kB */
|
|
|
|
case AMD_ID_LV400T:
|
|
DEBUGF("Am29LV400T\n");
|
|
info->flash_id += FLASH_AM400T;
|
|
info->sector_count = 11;
|
|
info->size = 0x00100000;
|
|
break; /* => 1 MB */
|
|
|
|
case AMD_ID_LV400B:
|
|
DEBUGF("Am29LV400B\n");
|
|
info->flash_id += FLASH_AM400B;
|
|
info->sector_count = 11;
|
|
info->size = 0x00100000;
|
|
break; /* => 1 MB */
|
|
|
|
case AMD_ID_LV800T:
|
|
DEBUGF("Am29LV800T\n");
|
|
info->flash_id += FLASH_AM800T;
|
|
info->sector_count = 19;
|
|
info->size = 0x00200000;
|
|
break; /* => 2 MB */
|
|
|
|
case AMD_ID_LV800B:
|
|
DEBUGF("Am29LV400B\n");
|
|
info->flash_id += FLASH_AM800B;
|
|
info->sector_count = 19;
|
|
info->size = 0x00200000;
|
|
break; /* => 2 MB */
|
|
|
|
case AMD_ID_LV160T:
|
|
DEBUGF("Am29LV160T\n");
|
|
info->flash_id += FLASH_AM160T;
|
|
info->sector_count = 35;
|
|
info->size = 0x00400000;
|
|
break; /* => 4 MB */
|
|
|
|
case AMD_ID_LV160B:
|
|
DEBUGF("Am29LV160B\n");
|
|
info->flash_id += FLASH_AM160B;
|
|
info->sector_count = 35;
|
|
info->size = 0x00400000;
|
|
break; /* => 4 MB */
|
|
|
|
case AMD_ID_LV320T:
|
|
DEBUGF("Am29LV320T\n");
|
|
info->flash_id += FLASH_AM320T;
|
|
info->sector_count = 67;
|
|
info->size = 0x00800000;
|
|
break; /* => 8 MB */
|
|
|
|
#if 0
|
|
/* Has the same ID as AMD_ID_LV320T, to be fixed */
|
|
case AMD_ID_LV320B:
|
|
DEBUGF("Am29LV320B\n");
|
|
info->flash_id += FLASH_AM320B;
|
|
info->sector_count = 67;
|
|
info->size = 0x00800000;
|
|
break; /* => 8 MB */
|
|
#endif
|
|
|
|
case AMD_ID_LV033C:
|
|
DEBUGF("Am29LV033C\n");
|
|
info->flash_id += FLASH_AM033C;
|
|
info->sector_count = 64;
|
|
info->size = 0x01000000;
|
|
break; /* => 16Mb */
|
|
|
|
case STM_ID_F040B:
|
|
DEBUGF("M29F040B\n");
|
|
info->flash_id += FLASH_AM040;
|
|
info->sector_count = 8;
|
|
info->size = 0x00080000;
|
|
break; /* => 512 kB */
|
|
|
|
default:
|
|
info->flash_id = FLASH_UNKNOWN;
|
|
flash_reset (addr);
|
|
flash_to_mem();
|
|
return (0); /* => no or unknown flash */
|
|
|
|
}
|
|
|
|
if (info->sector_count > CFG_MAX_FLASH_SECT) {
|
|
printf ("** ERROR: sector count %d > max (%d) **\n",
|
|
info->sector_count, CFG_MAX_FLASH_SECT);
|
|
info->sector_count = CFG_MAX_FLASH_SECT;
|
|
}
|
|
|
|
if (! flash_get_offsets (addr, info)) {
|
|
flash_reset (addr);
|
|
flash_to_mem();
|
|
return 0;
|
|
}
|
|
|
|
/* check for protected sectors */
|
|
for (i = 0; i < info->sector_count; i++) {
|
|
/* read sector protection at sector address, (A7 .. A0) = 0x02 */
|
|
/* D0 = 1 if protected */
|
|
value = in8(info->start[i] + 2);
|
|
iobarrier_rw();
|
|
info->protect[i] = (value & 1) != 0;
|
|
}
|
|
|
|
/*
|
|
* Reset bank to read mode
|
|
*/
|
|
flash_reset (addr);
|
|
|
|
flash_to_mem();
|
|
|
|
return (info->size);
|
|
}
|
|
|
|
static int flash_get_offsets (ulong base, flash_info_t *info)
|
|
{
|
|
unsigned int i;
|
|
|
|
switch (info->flash_id & FLASH_TYPEMASK) {
|
|
case FLASH_AM040:
|
|
/* set sector offsets for uniform sector type */
|
|
for (i = 0; i < info->sector_count; i++) {
|
|
info->start[i] = base + i * info->size /
|
|
info->sector_count;
|
|
}
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
int flash_erase (flash_info_t *info, int s_first, int s_last)
|
|
{
|
|
volatile ulong addr = info->start[0];
|
|
int flag, prot, sect, l_sect;
|
|
ulong start, now, last;
|
|
|
|
flash_to_xd();
|
|
|
|
if (s_first < 0 || s_first > s_last) {
|
|
if (info->flash_id == FLASH_UNKNOWN) {
|
|
printf ("- missing\n");
|
|
} else {
|
|
printf ("- no sectors to erase\n");
|
|
}
|
|
flash_to_mem();
|
|
return 1;
|
|
}
|
|
|
|
if (info->flash_id == FLASH_UNKNOWN) {
|
|
printf ("Can't erase unknown flash type %08lx - aborted\n",
|
|
info->flash_id);
|
|
flash_to_mem();
|
|
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 ("");
|
|
}
|
|
|
|
l_sect = -1;
|
|
|
|
/* Disable interrupts which might cause a timeout here */
|
|
flag = disable_interrupts();
|
|
|
|
out8(addr + 0x555, 0xAA);
|
|
iobarrier_rw();
|
|
out8(addr + 0x2AA, 0x55);
|
|
iobarrier_rw();
|
|
out8(addr + 0x555, 0x80);
|
|
iobarrier_rw();
|
|
out8(addr + 0x555, 0xAA);
|
|
iobarrier_rw();
|
|
out8(addr + 0x2AA, 0x55);
|
|
iobarrier_rw();
|
|
|
|
/* Start erase on unprotected sectors */
|
|
for (sect = s_first; sect<=s_last; sect++) {
|
|
if (info->protect[sect] == 0) { /* not protected */
|
|
addr = info->start[sect];
|
|
out8(addr, 0x30);
|
|
iobarrier_rw();
|
|
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 = info->start[l_sect];
|
|
|
|
DEBUGF ("Start erase timeout: %d\n", CFG_FLASH_ERASE_TOUT);
|
|
|
|
while ((in8(addr) & 0x80) != 0x80) {
|
|
if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
|
|
printf ("Timeout\n");
|
|
flash_reset (info->start[0]);
|
|
flash_to_mem();
|
|
return 1;
|
|
}
|
|
/* show that we're waiting */
|
|
if ((now - last) > 1000) { /* every second */
|
|
putc ('.');
|
|
last = now;
|
|
}
|
|
iobarrier_rw();
|
|
}
|
|
|
|
DONE:
|
|
/* reset to read mode */
|
|
flash_reset (info->start[0]);
|
|
flash_to_mem();
|
|
|
|
printf (" done\n");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* 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 cp, wp, data;
|
|
int i, l, rc;
|
|
ulong out_cnt = 0;
|
|
|
|
flash_to_xd();
|
|
|
|
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) {
|
|
flash_to_mem();
|
|
return (rc);
|
|
}
|
|
wp += 4;
|
|
}
|
|
|
|
putc(219);
|
|
|
|
/*
|
|
* handle word aligned part
|
|
*/
|
|
while (cnt >= 4) {
|
|
if (out_cnt>26214)
|
|
{
|
|
putc(219);
|
|
out_cnt = 0;
|
|
}
|
|
data = 0;
|
|
for (i=0; i<4; ++i) {
|
|
data = (data << 8) | *src++;
|
|
}
|
|
if ((rc = write_word(info, wp, data)) != 0) {
|
|
flash_to_mem();
|
|
return (rc);
|
|
}
|
|
wp += 4;
|
|
cnt -= 4;
|
|
out_cnt += 4;
|
|
}
|
|
|
|
if (cnt == 0) {
|
|
flash_to_mem();
|
|
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);
|
|
}
|
|
|
|
flash_to_mem();
|
|
return (write_word(info, wp, data));
|
|
}
|
|
|
|
/*
|
|
* Write a word to Flash, returns:
|
|
* 0 - OK
|
|
* 1 - write timeout
|
|
* 2 - Flash not erased
|
|
*/
|
|
static int write_word (flash_info_t *info, ulong dest, ulong data)
|
|
{
|
|
volatile ulong addr = info->start[0];
|
|
ulong start;
|
|
int i;
|
|
|
|
flash_to_xd();
|
|
|
|
/* Check if Flash is (sufficiently) erased */
|
|
if ((in32(dest) & data) != data) {
|
|
flash_to_mem();
|
|
return (2);
|
|
}
|
|
|
|
/* write each byte out */
|
|
for (i = 0; i < 4; i++) {
|
|
char *data_ch = (char *)&data;
|
|
int flag = disable_interrupts();
|
|
|
|
out8(addr + 0x555, 0xAA);
|
|
iobarrier_rw();
|
|
out8(addr + 0x2AA, 0x55);
|
|
iobarrier_rw();
|
|
out8(addr + 0x555, 0xA0);
|
|
iobarrier_rw();
|
|
out8(dest+i, data_ch[i]);
|
|
iobarrier_rw();
|
|
|
|
/* re-enable interrupts if necessary */
|
|
if (flag)
|
|
enable_interrupts();
|
|
|
|
/* data polling for D7 */
|
|
start = get_timer (0);
|
|
while ((in8(dest+i) & 0x80) != (data_ch[i] & 0x80)) {
|
|
if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
|
|
flash_reset (addr);
|
|
flash_to_mem();
|
|
return (1);
|
|
}
|
|
iobarrier_rw();
|
|
}
|
|
}
|
|
|
|
flash_reset (addr);
|
|
flash_to_mem();
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Reset bank to read mode
|
|
*/
|
|
static void flash_reset (ulong addr)
|
|
{
|
|
flash_to_xd();
|
|
out8(addr, 0xF0); /* reset bank */
|
|
iobarrier_rw();
|
|
flash_to_mem();
|
|
}
|
|
|
|
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 & FLASH_VENDMASK) {
|
|
case FLASH_MAN_AMD: printf ("AMD "); break;
|
|
case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
|
|
case FLASH_MAN_BM: printf ("BRIGHT MICRO "); break;
|
|
case FLASH_MAN_STM: printf ("SGS THOMSON "); break;
|
|
default: printf ("Unknown Vendor "); break;
|
|
}
|
|
|
|
switch (info->flash_id & FLASH_TYPEMASK) {
|
|
case FLASH_AM040: printf ("29F040 or 29LV040 (4 Mbit, uniform sectors)\n");
|
|
break;
|
|
case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
|
|
break;
|
|
case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n");
|
|
break;
|
|
case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
|
|
break;
|
|
case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n");
|
|
break;
|
|
case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
|
|
break;
|
|
case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
|
|
break;
|
|
case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
|
|
break;
|
|
case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n");
|
|
break;
|
|
default: printf ("Unknown Chip Type\n");
|
|
break;
|
|
}
|
|
|
|
if (info->size % 0x100000 == 0) {
|
|
printf (" Size: %ld MB in %d Sectors\n",
|
|
info->size / 0x100000, info->sector_count);
|
|
} else if (info->size % 0x400 == 0) {
|
|
printf (" Size: %ld KB in %d Sectors\n",
|
|
info->size / 0x400, info->sector_count);
|
|
} else {
|
|
printf (" Size: %ld B in %d Sectors\n",
|
|
info->size, 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");
|
|
}
|