mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-18 02:38:56 +00:00
522 lines
12 KiB
C
522 lines
12 KiB
C
/*
|
|
* (C) Copyright 2000-2002
|
|
* 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
|
|
*/
|
|
|
|
#define DEBUG
|
|
|
|
#include <common.h>
|
|
#include <mpc8xx.h>
|
|
|
|
#ifndef CONFIG_ENV_ADDR
|
|
#define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
|
|
#endif
|
|
|
|
flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Functions
|
|
*/
|
|
static ulong flash_get_size (vu_long *addr, flash_info_t *info);
|
|
static int write_word (flash_info_t *info, ulong dest, ulong data);
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
|
|
unsigned long flash_init (void)
|
|
{
|
|
volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
|
|
volatile memctl8xx_t *memctl = &immap->im_memctl;
|
|
unsigned long size;
|
|
int i;
|
|
|
|
/* Init: no FLASHes known */
|
|
for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
|
|
flash_info[i].flash_id = FLASH_UNKNOWN;
|
|
}
|
|
|
|
/* Static FLASH Bank configuration here - FIXME XXX */
|
|
|
|
size = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
|
|
|
|
if (flash_info[0].flash_id == FLASH_UNKNOWN) {
|
|
printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
|
|
size, size<<20);
|
|
}
|
|
|
|
/* Remap FLASH according to real size */
|
|
memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-size & OR_AM_MSK);
|
|
memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | BR_MS_GPCM | BR_V;
|
|
|
|
/* Re-do sizing to get full correct info */
|
|
size = flash_get_size((vu_long *)CONFIG_SYS_FLASH_BASE, &flash_info[0]);
|
|
|
|
#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
|
|
/* monitor protection ON by default */
|
|
flash_protect(FLAG_PROTECT_SET,
|
|
CONFIG_SYS_MONITOR_BASE,
|
|
CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
|
|
&flash_info[0]);
|
|
#endif
|
|
|
|
#ifdef CONFIG_ENV_IS_IN_FLASH
|
|
/* ENV protection ON by default */
|
|
flash_protect(FLAG_PROTECT_SET,
|
|
CONFIG_ENV_ADDR,
|
|
CONFIG_ENV_ADDR+CONFIG_ENV_SIZE-1,
|
|
&flash_info[0]);
|
|
#endif
|
|
|
|
flash_info[0].size = size;
|
|
|
|
return (size);
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
void flash_print_info (flash_info_t *info)
|
|
{
|
|
int i;
|
|
|
|
if (info->flash_id == FLASH_UNKNOWN) {
|
|
puts ("missing or unknown FLASH type\n");
|
|
return;
|
|
}
|
|
|
|
switch (info->flash_id & FLASH_VENDMASK) {
|
|
case FLASH_MAN_AMD: puts ("AMD "); break;
|
|
case FLASH_MAN_FUJ: puts ("FUJITSU "); break;
|
|
default: puts ("Unknown Vendor "); break;
|
|
}
|
|
|
|
switch (info->flash_id & FLASH_TYPEMASK) {
|
|
case FLASH_AM400B: puts ("AM29LV400B (4 Mbit, bottom boot sect)\n");
|
|
break;
|
|
case FLASH_AM400T: puts ("AM29LV400T (4 Mbit, top boot sector)\n");
|
|
break;
|
|
case FLASH_AM800B: puts ("AM29LV800B (8 Mbit, bottom boot sect)\n");
|
|
break;
|
|
case FLASH_AM800T: puts ("AM29LV800T (8 Mbit, top boot sector)\n");
|
|
break;
|
|
case FLASH_AM160B: puts ("AM29LV160B (16 Mbit, bottom boot sect)\n");
|
|
break;
|
|
case FLASH_AM160T: puts ("AM29LV160T (16 Mbit, top boot sector)\n");
|
|
break;
|
|
case FLASH_AM320B: puts ("AM29LV320B (32 Mbit, bottom boot sect)\n");
|
|
break;
|
|
case FLASH_AM320T: puts ("AM29LV320T (32 Mbit, top boot sector)\n");
|
|
break;
|
|
default: puts ("Unknown Chip Type\n");
|
|
break;
|
|
}
|
|
|
|
printf (" Size: %ld MB in %d Sectors\n",
|
|
info->size >> 20, info->sector_count);
|
|
|
|
puts (" Sector Start Addresses:");
|
|
for (i=0; i<info->sector_count; ++i) {
|
|
if ((i % 5) == 0)
|
|
puts ("\n ");
|
|
printf (" %08lX%s",
|
|
info->start[i],
|
|
info->protect[i] ? " (RO)" : " "
|
|
);
|
|
}
|
|
puts ("\n");
|
|
return;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
|
|
/*
|
|
* The following code cannot be run from FLASH!
|
|
*/
|
|
|
|
static ulong flash_get_size (vu_long *addr, flash_info_t *info)
|
|
{
|
|
short i;
|
|
ulong value;
|
|
ulong base = (ulong)addr;
|
|
|
|
/* Write auto select command: read Manufacturer ID */
|
|
addr[0x0555] = 0x00AA00AA;
|
|
addr[0x02AA] = 0x00550055;
|
|
addr[0x0555] = 0x00900090;
|
|
|
|
value = addr[0];
|
|
|
|
switch (value) {
|
|
case AMD_MANUFACT:
|
|
info->flash_id = FLASH_MAN_AMD;
|
|
break;
|
|
case FUJ_MANUFACT:
|
|
info->flash_id = FLASH_MAN_FUJ;
|
|
break;
|
|
default:
|
|
info->flash_id = FLASH_UNKNOWN;
|
|
info->sector_count = 0;
|
|
info->size = 0;
|
|
return (0); /* no or unknown flash */
|
|
}
|
|
|
|
value = addr[1]; /* device ID */
|
|
|
|
switch (value) {
|
|
case AMD_ID_LV400T:
|
|
info->flash_id += FLASH_AM400T;
|
|
info->sector_count = 11;
|
|
info->size = 0x00100000;
|
|
break; /* => 1 MB */
|
|
|
|
case AMD_ID_LV400B:
|
|
info->flash_id += FLASH_AM400B;
|
|
info->sector_count = 11;
|
|
info->size = 0x00100000;
|
|
break; /* => 1 MB */
|
|
|
|
case AMD_ID_LV800T:
|
|
info->flash_id += FLASH_AM800T;
|
|
info->sector_count = 19;
|
|
info->size = 0x00200000;
|
|
break; /* => 2 MB */
|
|
|
|
case AMD_ID_LV800B:
|
|
info->flash_id += FLASH_AM800B;
|
|
info->sector_count = 19;
|
|
info->size = 0x00200000;
|
|
break; /* => 2 MB */
|
|
|
|
case AMD_ID_LV160T:
|
|
info->flash_id += FLASH_AM160T;
|
|
info->sector_count = 35;
|
|
info->size = 0x00400000;
|
|
break; /* => 4 MB */
|
|
|
|
case AMD_ID_LV160B:
|
|
info->flash_id += FLASH_AM160B;
|
|
info->sector_count = 35;
|
|
info->size = 0x00400000;
|
|
break; /* => 4 MB */
|
|
case AMD_ID_LV320T:
|
|
info->flash_id += FLASH_AM320T;
|
|
info->sector_count = 71;
|
|
info->size = 0x00800000;
|
|
break; /* => 8 MB */
|
|
|
|
case AMD_ID_LV320B:
|
|
info->flash_id += FLASH_AM320B;
|
|
info->sector_count = 71;
|
|
info->size = 0x00800000;
|
|
break; /* => 8 MB */
|
|
default:
|
|
info->flash_id = FLASH_UNKNOWN;
|
|
return (0); /* => no or unknown flash */
|
|
}
|
|
|
|
/* set up sector start address table */
|
|
switch (value) {
|
|
case AMD_ID_LV400B:
|
|
case AMD_ID_LV800B:
|
|
case AMD_ID_LV160B:
|
|
/* set sector offsets for bottom boot block type */
|
|
info->start[0] = base + 0x00000000;
|
|
info->start[1] = base + 0x00008000;
|
|
info->start[2] = base + 0x0000C000;
|
|
info->start[3] = base + 0x00010000;
|
|
for (i = 4; i < info->sector_count; i++) {
|
|
info->start[i] = base + (i * 0x00020000) - 0x00060000;
|
|
}
|
|
break;
|
|
case AMD_ID_LV400T:
|
|
case AMD_ID_LV800T:
|
|
case AMD_ID_LV160T:
|
|
/* set sector offsets for top boot block type */
|
|
i = info->sector_count - 1;
|
|
info->start[i--] = base + info->size - 0x00008000;
|
|
info->start[i--] = base + info->size - 0x0000C000;
|
|
info->start[i--] = base + info->size - 0x00010000;
|
|
for (; i >= 0; i--) {
|
|
info->start[i] = base + i * 0x00020000;
|
|
}
|
|
break;
|
|
case AMD_ID_LV320B:
|
|
for (i = 0; i < info->sector_count; i++) {
|
|
info->start[i] = base;
|
|
/*
|
|
* The first 8 sectors are 8 kB,
|
|
* all the other ones are 64 kB
|
|
*/
|
|
base += (i < 8)
|
|
? 2 * ( 8 << 10)
|
|
: 2 * (64 << 10);
|
|
}
|
|
break;
|
|
case AMD_ID_LV320T:
|
|
for (i = 0; i < info->sector_count; i++) {
|
|
info->start[i] = base;
|
|
/*
|
|
* The last 8 sectors are 8 kB,
|
|
* all the other ones are 64 kB
|
|
*/
|
|
base += (i < (info->sector_count - 8))
|
|
? 2 * (64 << 10)
|
|
: 2 * ( 8 << 10);
|
|
}
|
|
break;
|
|
default:
|
|
return (0);
|
|
break;
|
|
}
|
|
|
|
/* 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 */
|
|
addr = (volatile unsigned long *)(info->start[i]);
|
|
info->protect[i] = addr[2] & 1;
|
|
}
|
|
|
|
/*
|
|
* Prevent writes to uninitialized FLASH.
|
|
*/
|
|
if (info->flash_id != FLASH_UNKNOWN) {
|
|
addr = (volatile unsigned long *)info->start[0];
|
|
|
|
*addr = 0x00F000F0; /* reset bank */
|
|
}
|
|
|
|
return (info->size);
|
|
}
|
|
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
|
|
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) {
|
|
puts ("- missing\n");
|
|
} else {
|
|
puts ("- no sectors to erase\n");
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
if ((info->flash_id == FLASH_UNKNOWN) ||
|
|
(info->flash_id > FLASH_AMD_COMP)) {
|
|
printf ("Can't erase unknown flash type %08lx - aborted\n",
|
|
info->flash_id);
|
|
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 {
|
|
puts ("\n");
|
|
}
|
|
|
|
l_sect = -1;
|
|
|
|
/* Disable interrupts which might cause a timeout here */
|
|
flag = disable_interrupts();
|
|
|
|
addr[0x0555] = 0x00AA00AA;
|
|
addr[0x02AA] = 0x00550055;
|
|
addr[0x0555] = 0x00800080;
|
|
addr[0x0555] = 0x00AA00AA;
|
|
addr[0x02AA] = 0x00550055;
|
|
|
|
/* 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] = 0x00300030;
|
|
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] & 0x00800080) != 0x00800080) {
|
|
if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
|
|
puts ("Timeout\n");
|
|
return 1;
|
|
}
|
|
/* show that we're waiting */
|
|
if ((now - last) > 1000) { /* every second */
|
|
putc ('.');
|
|
last = now;
|
|
}
|
|
}
|
|
|
|
DONE:
|
|
/* reset to read mode */
|
|
addr = (volatile unsigned long *)info->start[0];
|
|
addr[0] = 0x00F000F0; /* reset bank */
|
|
|
|
puts (" 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;
|
|
|
|
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));
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* 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)
|
|
{
|
|
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] = 0x00AA00AA;
|
|
addr[0x02AA] = 0x00550055;
|
|
addr[0x0555] = 0x00A000A0;
|
|
|
|
*((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) & 0x00800080) != (data & 0x00800080)) {
|
|
if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
|
|
return (1);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|