mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-11 15:37:23 +00:00
490 lines
13 KiB
C
490 lines
13 KiB
C
/*
|
|
* (C) Copyright 2004
|
|
* 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
|
|
*/
|
|
|
|
/*
|
|
* Yoo. Jonghoon, IPone, yooth@ipone.co.kr
|
|
* U-Boot port on RPXlite board
|
|
*
|
|
* Some of flash control words are modified. (from 2x16bit device
|
|
* to 4x8bit device)
|
|
* RPXLite board I tested has only 4 AM29LV800BB devices. Other devices
|
|
* are not tested.
|
|
*
|
|
* (?) Does an RPXLite board which
|
|
* does not use AM29LV800 flash memory exist ?
|
|
* I don't know...
|
|
*/
|
|
|
|
/* Yes,Yoo.They do use other FLASH for the board.
|
|
*
|
|
* Sam Song, IEMC. SHU, samsongshu@yahoo.com.cn
|
|
* U-Boot port on RPXlite DW version board
|
|
*
|
|
* By now,it uses 4 AM29DL323DB90VI devices(4x8bit).
|
|
* The total FLASH has 16MB(4x4MB).
|
|
* I just made some necessary changes on the basis of Wolfgang and Yoo's job.
|
|
*
|
|
* June 8, 2004 */
|
|
|
|
#include <common.h>
|
|
#include <mpc8xx.h>
|
|
|
|
flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Functions vu_long : volatile unsigned long IN include/common.h
|
|
*/
|
|
static ulong flash_get_size (vu_long *addr, flash_info_t *info);
|
|
static int write_word (flash_info_t *info, ulong dest, ulong data);
|
|
static void flash_get_offsets (ulong base, flash_info_t *info);
|
|
|
|
unsigned long flash_init (void)
|
|
{
|
|
unsigned long size_b0 ;
|
|
int i;
|
|
|
|
/* Init: no FLASHes known */
|
|
for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
|
|
flash_info[i].flash_id = FLASH_UNKNOWN;
|
|
}
|
|
|
|
size_b0 = flash_get_size((vu_long *)CONFIG_SYS_FLASH_BASE, &flash_info[0]);
|
|
flash_get_offsets (CONFIG_SYS_FLASH_BASE, &flash_info[0]);
|
|
|
|
#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
|
|
/* If Monitor is in the cope of FLASH,then
|
|
* protect this area by default in case for
|
|
* other occupation. [SAM] */
|
|
|
|
/* monitor protection ON by default */
|
|
flash_protect(FLAG_PROTECT_SET,
|
|
CONFIG_SYS_MONITOR_BASE,
|
|
CONFIG_SYS_MONITOR_BASE+CONFIG_SYS_MONITOR_LEN-1,
|
|
&flash_info[0]);
|
|
#endif
|
|
flash_info[0].size = size_b0;
|
|
return (size_b0);
|
|
}
|
|
|
|
static void flash_get_offsets (ulong base, flash_info_t *info)
|
|
{
|
|
int i;
|
|
|
|
/* set up sector start address table */
|
|
if (info->flash_id & FLASH_BTYPE) {
|
|
info->start[0] = base + 0x00000000;
|
|
info->start[1] = base + 0x00008000;
|
|
info->start[2] = base + 0x00010000;
|
|
info->start[3] = base + 0x00018000;
|
|
info->start[4] = base + 0x00020000;
|
|
info->start[5] = base + 0x00028000;
|
|
info->start[6] = base + 0x00030000;
|
|
info->start[7] = base + 0x00038000;
|
|
|
|
for (i = 8; i < info->sector_count; i++) {
|
|
info->start[i] = base + ((i-7) * 0x00040000);
|
|
}
|
|
} else {
|
|
i = info->sector_count - 1;
|
|
info->start[i--] = base + info->size - 0x00010000;
|
|
info->start[i--] = base + info->size - 0x00018000;
|
|
info->start[i--] = base + info->size - 0x00020000;
|
|
for (; i >= 0; i--) {
|
|
info->start[i] = base + i * 0x00040000;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
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;
|
|
default: printf ("Unknown Vendor "); break;
|
|
}
|
|
|
|
switch (info->flash_id & FLASH_TYPEMASK) {
|
|
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;
|
|
case FLASH_AMDL323B: printf ("AM29DL323B (32 Mbit, bottom boot sector)\n");
|
|
break;
|
|
/* I just add the FLASH_AMDL323B for RPXlite_DW BOARD. [SAM] */
|
|
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;
|
|
}
|
|
|
|
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[0xAAA] = 0x00AA00AA ;
|
|
addr[0x555] = 0x00550055 ;
|
|
addr[0xAAA] = 0x00900090 ;
|
|
|
|
value = addr[0] ;
|
|
switch (value & 0x00FF00FF) {
|
|
case AMD_MANUFACT: /* AMD_MANUFACT =0x00010001 in flash.h */
|
|
info->flash_id = FLASH_MAN_AMD; /* FLASH_MAN_AMD=0x00000000 in flash.h */
|
|
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[2] ; /* device ID */
|
|
switch (value & 0x00FF00FF) {
|
|
case (AMD_ID_LV400T & 0x00FF00FF):
|
|
info->flash_id += FLASH_AM400T;
|
|
info->sector_count = 11;
|
|
info->size = 0x00100000;
|
|
break; /* => 1 MB */
|
|
case (AMD_ID_LV400B & 0x00FF00FF):
|
|
info->flash_id += FLASH_AM400B;
|
|
info->sector_count = 11;
|
|
info->size = 0x00100000;
|
|
break; /* => 1 MB */
|
|
case (AMD_ID_LV800T & 0x00FF00FF):
|
|
info->flash_id += FLASH_AM800T;
|
|
info->sector_count = 19;
|
|
info->size = 0x00200000;
|
|
break; /* => 2 MB */
|
|
case (AMD_ID_LV800B & 0x00FF00FF):
|
|
info->flash_id += FLASH_AM800B;
|
|
info->sector_count = 19;
|
|
info->size = 0x00400000; /* Size doubled by yooth */
|
|
break; /* => 4 MB */
|
|
case (AMD_ID_LV160T & 0x00FF00FF):
|
|
info->flash_id += FLASH_AM160T;
|
|
info->sector_count = 35;
|
|
info->size = 0x00400000;
|
|
break; /* => 4 MB */
|
|
case (AMD_ID_LV160B & 0x00FF00FF):
|
|
info->flash_id += FLASH_AM160B;
|
|
info->sector_count = 35;
|
|
info->size = 0x00400000;
|
|
break; /* => 4 MB */
|
|
case (AMD_ID_DL323B & 0x00FF00FF):
|
|
info->flash_id += FLASH_AMDL323B;
|
|
info->sector_count = 71;
|
|
info->size = 0x01000000;
|
|
break; /* => 16 MB(4x4MB) */
|
|
/* AMD_ID_DL323B= 0x22532253 FLASH_AMDL323B= 0x0013
|
|
* AMD_ID_DL323B could be found in <flash.h>.[SAM]
|
|
* So we could get : flash_id = 0x00000013.
|
|
* The first four-bit represents VEDOR ID,leaving others for FLASH ID. */
|
|
default:
|
|
info->flash_id = FLASH_UNKNOWN;
|
|
return (0); /* => no or unknown flash */
|
|
|
|
}
|
|
/* set up sector start address table */
|
|
if (info->flash_id & FLASH_BTYPE) {
|
|
/* FLASH_BTYPE=0x0001 mask for bottom boot sector type.If the last bit equals 1,
|
|
* it means bottom boot flash. GOOD IDEA! [SAM]
|
|
*/
|
|
|
|
/* set sector offsets for bottom boot block type */
|
|
info->start[0] = base + 0x00000000;
|
|
info->start[1] = base + 0x00008000;
|
|
info->start[2] = base + 0x00010000;
|
|
info->start[3] = base + 0x00018000;
|
|
info->start[4] = base + 0x00020000;
|
|
info->start[5] = base + 0x00028000;
|
|
info->start[6] = base + 0x00030000;
|
|
info->start[7] = base + 0x00038000;
|
|
|
|
for (i = 8; i < info->sector_count; i++) {
|
|
info->start[i] = base + ((i-7) * 0x00040000) ;
|
|
}
|
|
} else {
|
|
/* set sector offsets for top boot block type */
|
|
i = info->sector_count - 1;
|
|
info->start[i--] = base + info->size - 0x00010000;
|
|
info->start[i--] = base + info->size - 0x00018000;
|
|
info->start[i--] = base + info->size - 0x00020000;
|
|
for (; i >= 0; i--) {
|
|
info->start[i] = base + i * 0x00040000;
|
|
}
|
|
}
|
|
|
|
/* 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[4] & 1 ; */
|
|
/* Mask it for disorder FLASH protection **[Sam]** */
|
|
}
|
|
|
|
/*
|
|
* Prevent writes to uninitialized FLASH.
|
|
*/
|
|
if (info->flash_id != FLASH_UNKNOWN) {
|
|
addr = (volatile unsigned long *)info->start[0];
|
|
|
|
*addr = 0xF0F0F0F0; /* 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) {
|
|
printf ("- missing\n");
|
|
} else {
|
|
printf ("- 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 {
|
|
printf ("\n");
|
|
}
|
|
|
|
l_sect = -1;
|
|
|
|
/* Disable interrupts which might cause a timeout here */
|
|
flag = disable_interrupts();
|
|
|
|
addr[0xAAA] = 0xAAAAAAAA;
|
|
addr[0x555] = 0x55555555;
|
|
addr[0xAAA] = 0x80808080;
|
|
addr[0xAAA] = 0xAAAAAAAA;
|
|
addr[0x555] = 0x55555555;
|
|
|
|
/* 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)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
|
|
printf ("Timeout\n");
|
|
return 1;
|
|
}
|
|
/* show that we're waiting */
|
|
if ((now - last) > 1000) { /* every second */
|
|
putc ('.');
|
|
last = now;
|
|
}
|
|
}
|
|
|
|
DONE:
|
|
/* reset to read mode */
|
|
addr = (vu_long *)info->start[0];
|
|
addr[0] = 0xF0F0F0F0; /* reset bank */
|
|
|
|
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;
|
|
|
|
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[0xAAA] = 0xAAAAAAAA;
|
|
addr[0x555] = 0x55555555;
|
|
addr[0xAAA] = 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) > CONFIG_SYS_FLASH_WRITE_TOUT) {
|
|
return (1);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|