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u-boot/board/eric/flash.c

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Initial revision
2002-11-03 00:38:21 +00:00
/*
* (C) Copyright 2001
* 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 <ppc4xx.h>
#include <asm/processor.h>
flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
#ifdef CFG_FLASH_16BIT
#define FLASH_WORD_SIZE unsigned short
#define FLASH_ID_MASK 0xFFFF
#else
#define FLASH_WORD_SIZE unsigned long
#define FLASH_ID_MASK 0xFFFFFFFF
#endif
/*-----------------------------------------------------------------------
* Functions
*/
/* stolen from esteem192e/flash.c */
ulong flash_get_size (volatile FLASH_WORD_SIZE *addr, flash_info_t *info);
#ifndef CFG_FLASH_16BIT
static int write_word (flash_info_t *info, ulong dest, ulong data);
#else
static int write_short (flash_info_t *info, ulong dest, ushort data);
#endif
static void flash_get_offsets (ulong base, flash_info_t *info);
/*-----------------------------------------------------------------------
*/
unsigned long flash_init (void)
{
unsigned long size_b0, size_b1;
int i;
uint pbcr;
unsigned long base_b0, base_b1;
/* Init: no FLASHes known */
for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
flash_info[i].flash_id = FLASH_UNKNOWN;
}
/* Static FLASH Bank configuration here - FIXME XXX */
size_b0 = flash_get_size((volatile FLASH_WORD_SIZE *)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_b0, size_b0<<20);
}
/* Only one bank */
if (CFG_MAX_FLASH_BANKS == 1)
{
/* Setup offsets */
flash_get_offsets (FLASH_BASE0_PRELIM, &flash_info[0]);
/* Monitor protection ON by default */
#if 0 /* sand: */
(void)flash_protect(FLAG_PROTECT_SET,
FLASH_BASE0_PRELIM-CFG_MONITOR_LEN+size_b0,
FLASH_BASE0_PRELIM-1+size_b0,
&flash_info[0]);
#else
(void)flash_protect(FLAG_PROTECT_SET,
CFG_MONITOR_BASE,
CFG_MONITOR_BASE+CFG_MONITOR_LEN-1,
&flash_info[0]);
#endif
size_b1 = 0 ;
flash_info[0].size = size_b0;
}
/* 2 banks */
else
{
size_b1 = flash_get_size((volatile FLASH_WORD_SIZE *)FLASH_BASE1_PRELIM, &flash_info[1]);
/* Re-do sizing to get full correct info */
if (size_b1)
{
mtdcr(ebccfga, pb0cr);
pbcr = mfdcr(ebccfgd);
mtdcr(ebccfga, pb0cr);
base_b1 = -size_b1;
pbcr = (pbcr & 0x0001ffff) | base_b1 | (((size_b1/1024/1024)-1)<<17);
mtdcr(ebccfgd, pbcr);
/* printf("pb1cr = %x\n", pbcr); */
}
if (size_b0)
{
mtdcr(ebccfga, pb1cr);
pbcr = mfdcr(ebccfgd);
mtdcr(ebccfga, pb1cr);
base_b0 = base_b1 - size_b0;
pbcr = (pbcr & 0x0001ffff) | base_b0 | (((size_b0/1024/1024)-1)<<17);
mtdcr(ebccfgd, pbcr);
/* printf("pb0cr = %x\n", pbcr); */
}
size_b0 = flash_get_size((volatile FLASH_WORD_SIZE *)base_b0, &flash_info[0]);
flash_get_offsets (base_b0, &flash_info[0]);
/* monitor protection ON by default */
#if 0 /* sand: */
(void)flash_protect(FLAG_PROTECT_SET,
FLASH_BASE0_PRELIM-CFG_MONITOR_LEN+size_b0,
FLASH_BASE0_PRELIM-1+size_b0,
&flash_info[0]);
#else
(void)flash_protect(FLAG_PROTECT_SET,
CFG_MONITOR_BASE,
CFG_MONITOR_BASE+CFG_MONITOR_LEN-1,
&flash_info[0]);
#endif
if (size_b1) {
/* Re-do sizing to get full correct info */
size_b1 = flash_get_size((volatile FLASH_WORD_SIZE *)base_b1, &flash_info[1]);
flash_get_offsets (base_b1, &flash_info[1]);
/* monitor protection ON by default */
(void)flash_protect(FLAG_PROTECT_SET,
base_b1+size_b1-CFG_MONITOR_LEN,
base_b1+size_b1-1,
&flash_info[1]);
/* monitor protection OFF by default (one is enough) */
(void)flash_protect(FLAG_PROTECT_CLEAR,
base_b0+size_b0-CFG_MONITOR_LEN,
base_b0+size_b0-1,
&flash_info[0]);
} else {
flash_info[1].flash_id = FLASH_UNKNOWN;
flash_info[1].sector_count = -1;
}
flash_info[0].size = size_b0;
flash_info[1].size = size_b1;
}/* else 2 banks */
return (size_b0 + size_b1);
}
/*-----------------------------------------------------------------------
*/
static void flash_get_offsets (ulong base, flash_info_t *info)
{
int i;
/* set up sector start adress table */
if ((info->flash_id & FLASH_TYPEMASK) == FLASH_28F320J3A ||
(info->flash_id & FLASH_TYPEMASK) == FLASH_28F640J3A ||
(info->flash_id & FLASH_TYPEMASK) == FLASH_28F128J3A) {
for (i = 0; i < info->sector_count; i++) {
info->start[i] = base + (i * info->size/info->sector_count);
}
} else if (info->flash_id & FLASH_BTYPE) {
if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
#ifndef CFG_FLASH_16BIT
/* set sector offsets for bottom boot block type */
info->start[0] = base + 0x00000000;
info->start[1] = base + 0x00004000;
info->start[2] = base + 0x00008000;
info->start[3] = base + 0x0000C000;
info->start[4] = base + 0x00010000;
info->start[5] = base + 0x00014000;
info->start[6] = base + 0x00018000;
info->start[7] = base + 0x0001C000;
for (i = 8; i < info->sector_count; i++) {
info->start[i] = base + (i * 0x00020000) - 0x000E0000;
}
}
else {
/* 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;
}
}
#else
/* set sector offsets for bottom boot block type */
info->start[0] = base + 0x00000000;
info->start[1] = base + 0x00002000;
info->start[2] = base + 0x00004000;
info->start[3] = base + 0x00006000;
info->start[4] = base + 0x00008000;
info->start[5] = base + 0x0000A000;
info->start[6] = base + 0x0000C000;
info->start[7] = base + 0x0000E000;
for (i = 8; i < info->sector_count; i++) {
info->start[i] = base + (i * 0x00010000) - 0x00070000;
}
}
else {
/* set sector offsets for bottom boot block type */
info->start[0] = base + 0x00000000;
info->start[1] = base + 0x00004000;
info->start[2] = base + 0x00006000;
info->start[3] = base + 0x00008000;
for (i = 4; i < info->sector_count; i++) {
info->start[i] = base + (i * 0x00010000) - 0x00030000;
}
}
#endif
} else {
/* set sector offsets for top boot block type */
i = info->sector_count - 1;
if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
#ifndef CFG_FLASH_16BIT
info->start[i--] = base + info->size - 0x00004000;
info->start[i--] = base + info->size - 0x00008000;
info->start[i--] = base + info->size - 0x0000C000;
info->start[i--] = base + info->size - 0x00010000;
info->start[i--] = base + info->size - 0x00014000;
info->start[i--] = base + info->size - 0x00018000;
info->start[i--] = base + info->size - 0x0001C000;
for (; i >= 0; i--) {
info->start[i] = base + i * 0x00020000;
}
} else {
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;
}
}
#else
info->start[i--] = base + info->size - 0x00002000;
info->start[i--] = base + info->size - 0x00004000;
info->start[i--] = base + info->size - 0x00006000;
info->start[i--] = base + info->size - 0x00008000;
info->start[i--] = base + info->size - 0x0000A000;
info->start[i--] = base + info->size - 0x0000C000;
info->start[i--] = base + info->size - 0x0000E000;
for (; i >= 0; i--) {
info->start[i] = base + i * 0x00010000;
}
} else {
info->start[i--] = base + info->size - 0x00004000;
info->start[i--] = base + info->size - 0x00006000;
info->start[i--] = base + info->size - 0x00008000;
for (; i >= 0; i--) {
info->start[i] = base + i * 0x00010000;
}
}
#endif
}
}
/*-----------------------------------------------------------------------
*/
void flash_print_info (flash_info_t *info)
{
int i;
uchar *boottype;
uchar botboot[]=", bottom boot sect)\n";
uchar topboot[]=", top boot sector)\n";
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_SST: printf ("SST "); break;
case FLASH_MAN_STM: printf ("STM "); break;
case FLASH_MAN_INTEL: printf ("INTEL "); break;
default: printf ("Unknown Vendor "); break;
}
if (info->flash_id & 0x0001 ) {
boottype = botboot;
} else {
boottype = topboot;
}
switch (info->flash_id & FLASH_TYPEMASK) {
case FLASH_AM400B: printf ("AM29LV400B (4 Mbit%s",boottype);
break;
case FLASH_AM400T: printf ("AM29LV400T (4 Mbit%s",boottype);
break;
case FLASH_AM800B: printf ("AM29LV800B (8 Mbit%s",boottype);
break;
case FLASH_AM800T: printf ("AM29LV800T (8 Mbit%s",boottype);
break;
case FLASH_AM160B: printf ("AM29LV160B (16 Mbit%s",boottype);
break;
case FLASH_AM160T: printf ("AM29LV160T (16 Mbit%s",boottype);
break;
case FLASH_AM320B: printf ("AM29LV320B (32 Mbit%s",boottype);
break;
case FLASH_AM320T: printf ("AM29LV320T (32 Mbit%s",boottype);
break;
case FLASH_INTEL800B: printf ("INTEL28F800B (8 Mbit%s",boottype);
break;
case FLASH_INTEL800T: printf ("INTEL28F800T (8 Mbit%s",boottype);
break;
case FLASH_INTEL160B: printf ("INTEL28F160B (16 Mbit%s",boottype);
break;
case FLASH_INTEL160T: printf ("INTEL28F160T (16 Mbit%s",boottype);
break;
case FLASH_INTEL320B: printf ("INTEL28F320B (32 Mbit%s",boottype);
break;
case FLASH_INTEL320T: printf ("INTEL28F320T (32 Mbit%s",boottype);
break;
#if 0 /* enable when devices are available */
case FLASH_INTEL640B: printf ("INTEL28F640B (64 Mbit%s",boottype);
break;
case FLASH_INTEL640T: printf ("INTEL28F640T (64 Mbit%s",boottype);
break;
#endif
case FLASH_28F320J3A: printf ("INTEL28F320J3A (32 Mbit%s",boottype);
break;
case FLASH_28F640J3A: printf ("INTEL28F640J3A (64 Mbit%s",boottype);
break;
case FLASH_28F128J3A: printf ("INTEL28F128J3A (128 Mbit%s",boottype);
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!
*/
ulong flash_get_size (volatile FLASH_WORD_SIZE *addr, flash_info_t *info)
{
short i;
ulong base = (ulong)addr;
FLASH_WORD_SIZE value;
/* Write auto select command: read Manufacturer ID */
#ifndef CFG_FLASH_16BIT
/*
* Note: if it is an AMD flash and the word at addr[0000]
* is 0x00890089 this routine will think it is an Intel
* flash device and may(most likely) cause trouble.
*/
addr[0x0000] = 0x00900090;
if(addr[0x0000] != 0x00890089){
addr[0x0555] = 0x00AA00AA;
addr[0x02AA] = 0x00550055;
addr[0x0555] = 0x00900090;
#else
/*
* Note: if it is an AMD flash and the word at addr[0000]
* is 0x0089 this routine will think it is an Intel
* flash device and may(most likely) cause trouble.
*/
addr[0x0000] = 0x0090;
if(addr[0x0000] != 0x0089){
addr[0x0555] = 0x00AA;
addr[0x02AA] = 0x0055;
addr[0x0555] = 0x0090;
#endif
}
value = addr[0];
switch (value) {
case (AMD_MANUFACT & FLASH_ID_MASK):
info->flash_id = FLASH_MAN_AMD;
break;
case (FUJ_MANUFACT & FLASH_ID_MASK):
info->flash_id = FLASH_MAN_FUJ;
break;
case (STM_MANUFACT & FLASH_ID_MASK):
info->flash_id = FLASH_MAN_STM;
break;
case (SST_MANUFACT & FLASH_ID_MASK):
info->flash_id = FLASH_MAN_SST;
break;
case (INTEL_MANUFACT & FLASH_ID_MASK):
info->flash_id = FLASH_MAN_INTEL;
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 & FLASH_ID_MASK):
info->flash_id += FLASH_AM400T;
info->sector_count = 11;
info->size = 0x00100000;
break; /* => 1 MB */
case (AMD_ID_LV400B & FLASH_ID_MASK):
info->flash_id += FLASH_AM400B;
info->sector_count = 11;
info->size = 0x00100000;
break; /* => 1 MB */
case (AMD_ID_LV800T & FLASH_ID_MASK):
info->flash_id += FLASH_AM800T;
info->sector_count = 19;
info->size = 0x00200000;
break; /* => 2 MB */
case (AMD_ID_LV800B & FLASH_ID_MASK):
info->flash_id += FLASH_AM800B;
info->sector_count = 19;
info->size = 0x00200000;
break; /* => 2 MB */
case (AMD_ID_LV160T & FLASH_ID_MASK):
info->flash_id += FLASH_AM160T;
info->sector_count = 35;
info->size = 0x00400000;
break; /* => 4 MB */
case (AMD_ID_LV160B & FLASH_ID_MASK):
info->flash_id += FLASH_AM160B;
info->sector_count = 35;
info->size = 0x00400000;
break; /* => 4 MB */
#if 0 /* enable when device IDs are available */
case (AMD_ID_LV320T & FLASH_ID_MASK):
info->flash_id += FLASH_AM320T;
info->sector_count = 67;
info->size = 0x00800000;
break; /* => 8 MB */
case (AMD_ID_LV320B & FLASH_ID_MASK):
info->flash_id += FLASH_AM320B;
info->sector_count = 67;
info->size = 0x00800000;
break; /* => 8 MB */
#endif
case (INTEL_ID_28F800B3T & FLASH_ID_MASK):
info->flash_id += FLASH_INTEL800T;
info->sector_count = 23;
info->size = 0x00200000;
break; /* => 2 MB */
case (INTEL_ID_28F800B3B & FLASH_ID_MASK):
info->flash_id += FLASH_INTEL800B;
info->sector_count = 23;
info->size = 0x00200000;
break; /* => 2 MB */
case (INTEL_ID_28F160B3T & FLASH_ID_MASK):
info->flash_id += FLASH_INTEL160T;
info->sector_count = 39;
info->size = 0x00400000;
break; /* => 4 MB */
case (INTEL_ID_28F160B3B & FLASH_ID_MASK):
info->flash_id += FLASH_INTEL160B;
info->sector_count = 39;
info->size = 0x00400000;
break; /* => 4 MB */
case (INTEL_ID_28F320B3T & FLASH_ID_MASK):
info->flash_id += FLASH_INTEL320T;
info->sector_count = 71;
info->size = 0x00800000;
break; /* => 8 MB */
case (INTEL_ID_28F320B3B & FLASH_ID_MASK):
info->flash_id += FLASH_AM320B;
info->sector_count = 71;
info->size = 0x00800000;
break; /* => 8 MB */
#if 0 /* enable when devices are available */
case (INTEL_ID_28F320B3T & FLASH_ID_MASK):
info->flash_id += FLASH_INTEL320T;
info->sector_count = 135;
info->size = 0x01000000;
break; /* => 16 MB */
case (INTEL_ID_28F320B3B & FLASH_ID_MASK):
info->flash_id += FLASH_AM320B;
info->sector_count = 135;
info->size = 0x01000000;
break; /* => 16 MB */
#endif
case (INTEL_ID_28F320J3A & FLASH_ID_MASK):
info->flash_id += FLASH_28F320J3A;
info->sector_count = 32;
info->size = 0x00400000;
break; /* => 32 MBit */
case (INTEL_ID_28F640J3A & FLASH_ID_MASK):
info->flash_id += FLASH_28F640J3A;
info->sector_count = 64;
info->size = 0x00800000;
break; /* => 64 MBit */
case (INTEL_ID_28F128J3A & FLASH_ID_MASK):
info->flash_id += FLASH_28F128J3A;
info->sector_count = 128;
info->size = 0x01000000;
break; /* => 128 MBit */
default:
/* FIXME*/
info->flash_id = FLASH_UNKNOWN;
return (0); /* => no or unknown flash */
}
flash_get_offsets(base, info);
/* 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 FLASH_WORD_SIZE *)(info->start[i]);
info->protect[i] = addr[2] & 1;
}
/*
* Prevent writes to uninitialized FLASH.
*/
if (info->flash_id != FLASH_UNKNOWN) {
addr = (volatile FLASH_WORD_SIZE *)info->start[0];
if( (info->flash_id & 0xFF00) == FLASH_MAN_INTEL){
*addr = (0x00F000F0 & FLASH_ID_MASK); /* reset bank */
} else {
*addr = (0x00FF00FF & FLASH_ID_MASK); /* reset bank */
}
}
return (info->size);
}
/*-----------------------------------------------------------------------
*/
int flash_erase (flash_info_t *info, int s_first, int s_last)
{
volatile FLASH_WORD_SIZE *addr=(volatile FLASH_WORD_SIZE*)(info->start[0]);
int flag, prot, sect, l_sect, barf;
ulong start, now, last;
int rcode = 0;
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) &&
( (info->flash_id & FLASH_VENDMASK) != FLASH_MAN_INTEL ) ) ){
printf ("Can't erase unknown flash type - aborted\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();
if(info->flash_id < FLASH_AMD_COMP) {
#ifndef CFG_FLASH_16BIT
addr[0x0555] = 0x00AA00AA;
addr[0x02AA] = 0x00550055;
addr[0x0555] = 0x00800080;
addr[0x0555] = 0x00AA00AA;
addr[0x02AA] = 0x00550055;
#else
addr[0x0555] = 0x00AA;
addr[0x02AA] = 0x0055;
addr[0x0555] = 0x0080;
addr[0x0555] = 0x00AA;
addr[0x02AA] = 0x0055;
#endif
/* Start erase on unprotected sectors */
for (sect = s_first; sect<=s_last; sect++) {
if (info->protect[sect] == 0) { /* not protected */
addr = (volatile FLASH_WORD_SIZE *)(info->start[sect]);
addr[0] = (0x00300030 & FLASH_ID_MASK);
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 = (volatile FLASH_WORD_SIZE*)(info->start[l_sect]);
while ((addr[0] & (0x00800080&FLASH_ID_MASK)) !=
(0x00800080&FLASH_ID_MASK) )
{
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 FLASH_WORD_SIZE *)info->start[0];
addr[0] = (0x00F000F0 & FLASH_ID_MASK); /* reset bank */
} else {
for (sect = s_first; sect<=s_last; sect++) {
if (info->protect[sect] == 0) { /* not protected */
barf = 0;
#ifndef CFG_FLASH_16BIT
addr = (vu_long*)(info->start[sect]);
addr[0] = 0x00200020;
addr[0] = 0x00D000D0;
while(!(addr[0] & 0x00800080)); /* wait for error or finish */
if( addr[0] & 0x003A003A) { /* check for error */
barf = addr[0] & 0x003A0000;
if( barf ) {
barf >>=16;
} else {
barf = addr[0] & 0x0000003A;
}
}
#else
addr = (vu_short*)(info->start[sect]);
addr[0] = 0x0020;
addr[0] = 0x00D0;
while(!(addr[0] & 0x0080)); /* wait for error or finish */
if( addr[0] & 0x003A) /* check for error */
barf = addr[0] & 0x003A;
#endif
if(barf) {
printf("\nFlash error in sector at %lx\n",(unsigned long)addr);
if(barf & 0x0002) printf("Block locked, not erased.\n");
if((barf & 0x0030) == 0x0030)
printf("Command Sequence error.\n");
if((barf & 0x0030) == 0x0020)
printf("Block Erase error.\n");
if(barf & 0x0008) printf("Vpp Low error.\n");
rcode = 1;
} else printf(".");
l_sect = sect;
}
addr = (volatile FLASH_WORD_SIZE *)info->start[0];
addr[0] = (0x00FF00FF & FLASH_ID_MASK); /* reset bank */
}
}
printf (" done\n");
return rcode;
}
/*-----------------------------------------------------------------------
*/
/*flash_info_t *addr2info (ulong addr)
{
flash_info_t *info;
int i;
for (i=0, info=&flash_info[0]; i<CFG_MAX_FLASH_BANKS; ++i, ++info) {
if ((addr >= info->start[0]) &&
(addr < (info->start[0] + info->size)) ) {
return (info);
}
}
return (NULL);
}
*/
/*-----------------------------------------------------------------------
* Copy memory to flash.
* Make sure all target addresses are within Flash bounds,
* and no protected sectors are hit.
* Returns:
* 0 - OK
* 1 - write timeout
* 2 - Flash not erased
* 4 - target range includes protected sectors
* 8 - target address not in Flash memory
*/
/*int flash_write (uchar *src, ulong addr, ulong cnt)
{
int i;
ulong end = addr + cnt - 1;
flash_info_t *info_first = addr2info (addr);
flash_info_t *info_last = addr2info (end );
flash_info_t *info;
if (cnt == 0) {
return (0);
}
if (!info_first || !info_last) {
return (8);
}
for (info = info_first; info <= info_last; ++info) {
ulong b_end = info->start[0] + info->size;*/ /* bank end addr */
/* short s_end = info->sector_count - 1;
for (i=0; i<info->sector_count; ++i) {
ulong e_addr = (i == s_end) ? b_end : info->start[i + 1];
if ((end >= info->start[i]) && (addr < e_addr) &&
(info->protect[i] != 0) ) {
return (4);
}
}
}
*/ /* finally write data to flash */
/* for (info = info_first; info <= info_last && cnt>0; ++info) {
ulong len;
len = info->start[0] + info->size - addr;
if (len > cnt)
len = cnt;
if ((i = write_buff(info, src, addr, len)) != 0) {
return (i);
}
cnt -= len;
addr += len;
src += len;
}
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)
{
#ifndef CFG_FLASH_16BIT
ulong cp, wp, data;
int l;
#else
ulong cp, wp;
ushort data;
#endif
int i, rc;
#ifndef CFG_FLASH_16BIT
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));
#else
wp = (addr & ~1); /* get lower word aligned address */
/*
* handle unaligned start byte
*/
if (addr - wp) {
data = 0;
data = (data << 8) | *src++;
--cnt;
if ((rc = write_short(info, wp, data)) != 0) {
return (rc);
}
wp += 2;
}
/*
* handle word aligned part
*/
/* l = 0; used for debuging */
while (cnt >= 2) {
data = 0;
for (i=0; i<2; ++i) {
data = (data << 8) | *src++;
}
/* if(!l){
printf("%x",data);
l = 1;
} used for debuging */
if ((rc = write_short(info, wp, data)) != 0) {
return (rc);
}
wp += 2;
cnt -= 2;
}
if (cnt == 0) {
return (0);
}
/*
* handle unaligned tail bytes
*/
data = 0;
for (i=0, cp=wp; i<2 && cnt>0; ++i, ++cp) {
data = (data << 8) | *src++;
--cnt;
}
for (; i<2; ++i, ++cp) {
data = (data << 8) | (*(uchar *)cp);
}
return (write_short(info, wp, data));
#endif
}
/*-----------------------------------------------------------------------
* Write a word to Flash, returns:
* 0 - OK
* 1 - write timeout
* 2 - Flash not erased
*/
#ifndef CFG_FLASH_16BIT
static int write_word (flash_info_t *info, ulong dest, ulong data)
{
vu_long *addr = (vu_long*)(info->start[0]);
ulong start,barf;
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();
if(info->flash_id > FLASH_AMD_COMP) {
/* AMD stuff */
addr[0x0555] = 0x00AA00AA;
addr[0x02AA] = 0x00550055;
addr[0x0555] = 0x00A000A0;
} else {
/* intel stuff */
*addr = 0x00400040;
}
*((vu_long *)dest) = data;
/* re-enable interrupts if necessary */
if (flag)
enable_interrupts();
/* data polling for D7 */
start = get_timer (0);
if(info->flash_id > FLASH_AMD_COMP) {
while ((*((vu_long *)dest) & 0x00800080) != (data & 0x00800080)) {
if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
return (1);
}
}
} else {
while(!(addr[0] & 0x00800080)){ /* wait for error or finish */
if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
return (1);
}
if( addr[0] & 0x003A003A) { /* check for error */
barf = addr[0] & 0x003A0000;
if( barf ) {
barf >>=16;
} else {
barf = addr[0] & 0x0000003A;
}
printf("\nFlash write error at address %lx\n",(unsigned long)dest);
if(barf & 0x0002) printf("Block locked, not erased.\n");
if(barf & 0x0010) printf("Programming error.\n");
if(barf & 0x0008) printf("Vpp Low error.\n");
return(2);
}
}
return (0);
}
#else
static int write_short (flash_info_t *info, ulong dest, ushort data)
{
vu_short *addr = (vu_short*)(info->start[0]);
ulong start,barf;
int flag;
/* Check if Flash is (sufficiently) erased */
if ((*((vu_short *)dest) & data) != data) {
return (2);
}
/* Disable interrupts which might cause a timeout here */
flag = disable_interrupts();
if(info->flash_id < FLASH_AMD_COMP) {
/* AMD stuff */
addr[0x0555] = 0x00AA;
addr[0x02AA] = 0x0055;
addr[0x0555] = 0x00A0;
} else {
/* intel stuff */
*addr = 0x00D0;
*addr = 0x0040;
}
*((vu_short *)dest) = data;
/* re-enable interrupts if necessary */
if (flag)
enable_interrupts();
/* data polling for D7 */
start = get_timer (0);
if(info->flash_id < FLASH_AMD_COMP) {
/* AMD stuff */
while ((*((vu_short *)dest) & 0x0080) != (data & 0x0080)) {
if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
return (1);
}
}
} else {
/* intel stuff */
while(!(addr[0] & 0x0080)){ /* wait for error or finish */
if (get_timer(start) > CFG_FLASH_WRITE_TOUT) return (1);
}
if( addr[0] & 0x003A) { /* check for error */
barf = addr[0] & 0x003A;
printf("\nFlash write error at address %lx\n",(unsigned long)dest);
if(barf & 0x0002) printf("Block locked, not erased.\n");
if(barf & 0x0010) printf("Programming error.\n");
if(barf & 0x0008) printf("Vpp Low error.\n");
return(2);
}
*addr = 0x00B0;
*addr = 0x0070;
while(!(addr[0] & 0x0080)){ /* wait for error or finish */
if (get_timer(start) > CFG_FLASH_WRITE_TOUT) return (1);
}
*addr = 0x00FF;
}
return (0);
}
#endif
/*-----------------------------------------------------------------------
*/
Reference in a new issue Copy permalink