分类： 嵌入式
2013-09-12 14:45:38
/*
* (C) Copyright 2001
* Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
*
* 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
#include
#define CFG_FLASH_WORD_SIZE unsigned short /* flash word size (width) */
#define CFG_FLASH_ADDR0 0x555 /* 参看am160的图示 */
#define CFG_FLASH_ADDR1 0x2AA /* 参看am160的图示 */
/*
* The following defines are added for buggy IOP480 byte interface.
* All other boards should use the standard values (CPCI405 etc.)
*/
#define CFG_FLASH_READ0 0x0000 /* 0 is standard */
#define CFG_FLASH_READ1 0x0001 /* 1 is standard */
#define CFG_FLASH_READ2 0x0002 /* 2 is standard */
flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
/*-----------------------------------------------------------------------
* Functions
*/
static int write_word (flash_info_t *info, ulong dest, ulong data);
/*-----------------------------------------------------------------------
*/
static void flash_get_offsets (ulong base, flash_info_t *info)
{
int i;
short n;
/* set up sector start address table */
if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
((info->flash_id & FLASH_TYPEMASK) == FLASH_AM160T) || /*添加的，因为要以64K来划分*/
((info->flash_id & FLASH_TYPEMASK) == FLASH_AM640U)) {
for (i = 0; i < info->sector_count; i++)
info->start[i] = base + (i * 0x00010000);
} else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322B) ||
((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323B) ||
((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324B)) {
/* set sector offsets for bottom boot block type */
for (i=0; i<8; ++i) { /* 8 x 8k boot sectors */
info->start[i] = base;
base += 8 << 10;
}
while (i < info->sector_count) { /* 64k regular sectors */
info->start[i] = base;
base += 64 << 10;
++i;
}
} else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322T) ||
((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323T) ||
((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324T)) {
/* set sector offsets for top boot block type */
base += info->size;
i = info->sector_count;
for (n=0; n<8; ++n) { /* 8 x 8k boot sectors */
base -= 8 << 10;
--i;
info->start[i] = base;
}
while (i > 0) { /* 64k regular sectors */
base -= 64 << 10;
--i;
info->start[i] = base;
}
} else {
if (info->flash_id & FLASH_BTYPE) {
/* 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;
}
} else {
/* set sector offsets for top boot block type */
i = info->sector_count - 1;
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;
}
}
}
}
/*-----------------------------------------------------------------------
*/
void flash_print_info (flash_info_t *info)
{
int i;
int k;
int size;
int erased;
volatile unsigned long *flash;
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 ("ST "); 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; //调用的是这个函数，不用修改
case FLASH_AM320T: printf ("AM29LV320T (32 M, top sector)\n");
break;
case FLASH_AM320B: printf ("AM29LV320B (32 M, bottom sector)\n");
break;
case FLASH_AMDL322T: printf ("AM29DL322T (32 M, top sector)\n");
break;
case FLASH_AMDL322B: printf ("AM29DL322B (32 M, bottom sector)\n");
break;
case FLASH_AMDL323T: printf ("AM29DL323T (32 M, top sector)\n");
break;
case FLASH_AMDL323B: printf ("AM29DL323B (32 M, bottom sector)\n");
break;
case FLASH_AM640U: printf ("AM29LV640D (64 M, uniform sector)\n");
break;
case FLASH_SST800A: printf ("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
break;
case FLASH_SST160A: printf ("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
break;
case FLASH_STMW320DT: printf ("M29W320DT (32 M, top sector)\n");
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
#ifdef CFG_FLASH_EMPTY_INFO
/*
* Check if whole sector is erased
*/
if (i != (info->sector_count-1))
size = info->start[i+1] - info->start[i];
else
size = info->start[0] + info->size - info->start[i];
erased = 1;
flash = (volatile unsigned long *)info->start[i];
size = size >> 2; /* divide by 4 for longword access */
for (k=0; k
{
if (*flash++ != 0xffffffff)
{
erased = 0;
break;
}
}
if ((i % 5) == 0)
printf ("\n ");
/* print empty and read-only info */
printf (" %08lX%s%s",
info->start[i],
erased ? " E" : " ",
info->protect[i] ? "RO " : " ");
#else
if ((i % 5) == 0)
printf ("\n ");
printf (" %08lX%s",
info->start[i],
info->protect[i] ? " (RO)" : " ");
#endif
}
printf ("\n");
return;
}
/*-----------------------------------------------------------------------
*/
/*-----------------------------------------------------------------------
*/
/*
* The following code cannot be run from FLASH!
*/
static ulong flash_get_size (vu_long *addr, flash_info_t *info)
{
short i;
short n;
CFG_FLASH_WORD_SIZE value;
ulong base = (ulong)addr;
volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *)addr;
debug("[%s, %d] Entering ...\n", __FUNCTION__, __LINE__);
/* Write auto select command: read Manufacturer ID */
addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00AA;
addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE)0x0055;
addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x0090;
value = addr2[CFG_FLASH_READ0];
switch (value) {
case (CFG_FLASH_WORD_SIZE)AMD_MANUFACT:
info->flash_id = FLASH_MAN_AMD;
break;
case (CFG_FLASH_WORD_SIZE)FUJ_MANUFACT:
info->flash_id = FLASH_MAN_FUJ;
break;
case (CFG_FLASH_WORD_SIZE)SST_MANUFACT:
info->flash_id = FLASH_MAN_SST;
break;
case (CFG_FLASH_WORD_SIZE)STM_MANUFACT:
info->flash_id = FLASH_MAN_STM;
break;
default:
info->flash_id = FLASH_UNKNOWN;
info->sector_count = 0;
info->size = 0;
return (0); /* no or unknown flash */
}
value = addr2[CFG_FLASH_READ1]; /* device ID */
switch (value) {
case (CFG_FLASH_WORD_SIZE)AMD_ID_LV400T:
info->flash_id += FLASH_AM400T;
info->sector_count = 11;
info->size = 0x00080000;
break; /* => 0.5 MB */
case (CFG_FLASH_WORD_SIZE)AMD_ID_LV400B:
info->flash_id += FLASH_AM400B;
info->sector_count = 11;
info->size = 0x00080000;
break; /* => 0.5 MB */
case (CFG_FLASH_WORD_SIZE)AMD_ID_LV800T:
info->flash_id += FLASH_AM800T;
info->sector_count = 19;
info->size = 0x00100000;
break; /* => 1 MB */
case (CFG_FLASH_WORD_SIZE)AMD_ID_LV800B:
info->flash_id += FLASH_AM800B;
info->sector_count = 19;
info->size = 0x00100000;
break; /* => 1 MB */
case (CFG_FLASH_WORD_SIZE)AMD_ID_LV160T://调用的是这个
info->flash_id += FLASH_AM160T;
info->sector_count = 32; //原来是35，改为32
info->size = 0x00200000;
break; /* => 2 MB */
case (CFG_FLASH_WORD_SIZE)AMD_ID_LV160B:
info->flash_id += FLASH_AM160B;
info->sector_count = 35;
info->size = 0x00200000;
break; /* => 2 MB */
case (CFG_FLASH_WORD_SIZE)STM_ID_29W320DT:
info->flash_id += FLASH_STMW320DT;
info->sector_count = 67;
info->size = 0x00400000; break; /* => 4 MB */
case (CFG_FLASH_WORD_SIZE)AMD_ID_LV320T:
info->flash_id += FLASH_AM320T;
info->sector_count = 71;
info->size = 0x00400000; break; /* => 4 MB */
case (CFG_FLASH_WORD_SIZE)AMD_ID_LV320B:
info->flash_id += FLASH_AM320B;
info->sector_count = 71;
info->size = 0x00400000; break; /* => 4 MB */
case (CFG_FLASH_WORD_SIZE)AMD_ID_DL322T:
info->flash_id += FLASH_AMDL322T;
info->sector_count = 71;
info->size = 0x00400000; break; /* => 4 MB */
case (CFG_FLASH_WORD_SIZE)AMD_ID_DL322B:
info->flash_id += FLASH_AMDL322B;
info->sector_count = 71;
info->size = 0x00400000; break; /* => 4 MB */
case (CFG_FLASH_WORD_SIZE)AMD_ID_DL323T:
info->flash_id += FLASH_AMDL323T;
info->sector_count = 71;
info->size = 0x00400000; break; /* => 4 MB */
case (CFG_FLASH_WORD_SIZE)AMD_ID_DL323B:
info->flash_id += FLASH_AMDL323B;
info->sector_count = 71;
info->size = 0x00400000; break; /* => 4 MB */
case (CFG_FLASH_WORD_SIZE)AMD_ID_LV640U:
info->flash_id += FLASH_AM640U;
info->sector_count = 128;
info->size = 0x00800000; break; /* => 8 MB */
case (CFG_FLASH_WORD_SIZE)SST_ID_xF800A:
info->flash_id += FLASH_SST800A;
info->sector_count = 16;
info->size = 0x00100000;
break; /* => 1 MB */
case (CFG_FLASH_WORD_SIZE)SST_ID_xF160A:
info->flash_id += FLASH_SST160A;
info->sector_count = 32;
info->size = 0x00200000;
break; /* => 2 MB */
default:
info->flash_id = FLASH_UNKNOWN;
return (0); /* => no or unknown flash */
}
/* set up sector start address table, add myself am160t */
if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
((info->flash_id & FLASH_TYPEMASK) == FLASH_AM160T) || //添加的，原理同上
((info->flash_id & FLASH_TYPEMASK) == FLASH_AM640U)) {
for (i = 0; i < info->sector_count; i++)
info->start[i] = base + (i * 0x00010000);
} else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322B) ||
((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323B) ||
((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324B)) {
/* set sector offsets for bottom boot block type */
for (i=0; i<8; ++i) { /* 8 x 8k boot sectors */
info->start[i] = base;
base += 8 << 10;
}
while (i < info->sector_count) { /* 64k regular sectors */
info->start[i] = base;
base += 64 << 10;
++i;
}
} else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322T) ||
((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323T) ||
((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324T)) {
/* set sector offsets for top boot block type */
base += info->size;
i = info->sector_count;
for (n=0; n<8; ++n) { /* 8 x 8k boot sectors */
base -= 8 << 10;
--i;
info->start[i] = base;
}
while (i > 0) { /* 64k regular sectors */
base -= 64 << 10;
--i;
info->start[i] = base;
}
} else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) {
/* set sector offsets for top boot block type */
base += info->size;
i = info->sector_count;
/* 1 x 16k boot sector */
base -= 16 << 10;
--i;
info->start[i] = base;
/* 2 x 8k boot sectors */
for (n=0; n<2; ++n) {
base -= 8 << 10;
--i;
info->start[i] = base;
}
/* 1 x 32k boot sector */
base -= 32 << 10;
--i;
info->start[i] = base;
while (i > 0) { /* 64k regular sectors */
base -= 64 << 10;
--i;
info->start[i] = base;
}
} else {
if (info->flash_id & FLASH_BTYPE) {
/* 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;
}
} else {
/* set sector offsets for top boot block type */
i = info->sector_count - 1;
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;
}
}
}
/* 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 */
addr2 = (volatile CFG_FLASH_WORD_SIZE *)(info->start[i]);
if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
info->protect[i] = 0;
else
info->protect[i] = addr2[CFG_FLASH_READ2] & 1;
}
/*
* Prevent writes to uninitialized FLASH.
*/
if (info->flash_id != FLASH_UNKNOWN) {
addr2 = (CFG_FLASH_WORD_SIZE *)info->start[0];
*addr2 = (CFG_FLASH_WORD_SIZE)0x00F0; /* reset bank */
}
return (info->size);
}
unsigned long flash_init (void)
{
unsigned long size_b0;
int i;
/* Init: no FLASHes known */
for (i=0; i
flash_info[i].flash_id = FLASH_UNKNOWN;
}
/* Static FLASH Bank configuration here - FIXME XXX */
size_b0 = flash_get_size((vu_long *)CFG_FLASH_BASE, &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);
}
/* Setup offsets */
flash_get_offsets (0, &flash_info[0]);
/* Monitor protection ON by default */
(void)flash_protect(FLAG_PROTECT_SET,
-CFG_MONITOR_LEN,
0xffffffff,
&flash_info[0]);
flash_info[0].size = size_b0;
return (size_b0);
}
/*-----------------------------------------------------------------------
*/
int flash_erase (flash_info_t *info, int s_first, int s_last)
{
volatile CFG_FLASH_WORD_SIZE *addr = (CFG_FLASH_WORD_SIZE *)(info->start[0]);
volatile CFG_FLASH_WORD_SIZE *addr2;
int flag, prot, sect, l_sect;
ulong start, now, last;
int i;
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) {
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();
/* Start erase on unprotected sectors */
for (sect = s_first; sect<=s_last; sect++) {
if (info->protect[sect] == 0) { /* not protected */
addr2 = (CFG_FLASH_WORD_SIZE *)(info->start[sect]);
if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00AA00AA;
addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE)0x00550055;
addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00800080;
addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00AA00AA;
addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE)0x00550055;
addr2[0] = (CFG_FLASH_WORD_SIZE)0x00500050; /* block erase */
for (i=0; i<50; i++)
udelay(1000); /* wait 1 ms */
} else {
if (sect == s_first) {
/*add myself ，这个地方很重要，那个saveenv，就是调用的这里，在这我解释一下，通过图片，我们看到，这flash不支持块擦写，所以就用扇区擦写*/
printf("select sector erase \n"); //我添加的，实验证明，在我进行saveenv是，显示了这条信息，说明，进入了着个if中
addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00AA;
addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE)0x0055;
addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x0080;
addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00AA;
addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE)0x0055;
}
addr2[0] = (CFG_FLASH_WORD_SIZE)0x0030; /* sector erase */
}
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 = (CFG_FLASH_WORD_SIZE *)(info->start[l_sect]);
while ((addr[0] & (CFG_FLASH_WORD_SIZE)0x0080) != (CFG_FLASH_WORD_SIZE)0x0080) {
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 */
putc ('.');
last = now;
}
}
DONE:
/* reset to read mode */
addr = (CFG_FLASH_WORD_SIZE *)info->start[0];
addr[0] = (CFG_FLASH_WORD_SIZE)0x00F0; /* 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
#ifdef CONFIG_MINI2440
data = data | ((*(uchar *)cp)<<(8*i));
#else
data = (data << 8) | (*(uchar *)cp);
#endif
}
for (; i<4 && cnt>0; ++i) {
#ifdef CONFIG_MINI2440
data = data | ((*src++)<<(8*i));
#else
data = (data << 8) | *src++;
#endif
--cnt;
++cp;
}
for (; cnt==0 && i<4; ++i, ++cp) {
#ifdef CONFIG_MINI2440
data = data | ((*(uchar *)cp)<<(8*i));
#else
data = (data << 8) | (*(uchar *)cp);
#endif
}
if ((rc = write_word(info, wp, data)) != 0) {
return (rc);
}
wp += 4;
}
/*
* handle word aligned part
*/
while (cnt >= 4) {
data = 0;
#ifdef CONFIG_MINI2440
data = (*(ulong*)src);
src += 4;
#else
for (i=0; i<4; ++i) {
data = (data << 8) | *src++;
}
#endif
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) {
#ifdef CONFIG_MINI2440
data = data | ((*src++)<<(8*i));
#else
data = (data << 8) | *src++;
#endif
--cnt;
}
for (; i<4; ++i, ++cp) {
#ifdef CONFIG_MINI2440
data = data | ((*(uchar *)cp)<<(8*i));
#else
data = (data << 8) | (*(uchar *)cp);
#endif
}
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 CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *)(info->start[0]);
volatile CFG_FLASH_WORD_SIZE *dest2 = (CFG_FLASH_WORD_SIZE *)dest;
volatile CFG_FLASH_WORD_SIZE *data2 = (CFG_FLASH_WORD_SIZE *)&data;
ulong start;
int flag;
int i;
/* Check if Flash is (sufficiently) erased */
if ((*((volatile ulong *)dest) & data) != data) {
return (2);
}
/* Disable interrupts which might cause a timeout here */
flag = disable_interrupts();
for (i=0; i<4/sizeof(CFG_FLASH_WORD_SIZE); i++)
{
addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00AA;
addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE)0x0055;
addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00A0;
dest2[i] = data2[i];
/* re-enable interrupts if necessary */
if (flag)
enable_interrupts();
/* data polling for D7 */
start = get_timer (0);
while ((dest2[i] & (CFG_FLASH_WORD_SIZE)0x0080) !=
(data2[i] & (CFG_FLASH_WORD_SIZE)0x0080)) {
if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
return (1);
}
}
}
return (0);
}
/*-----------------------------------------------------------------------
*/
mini2440.rar /*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH
* Marius Groeger
* Gary Jennejohn
* David Mueller
*
* Configuation settings for the SAMSUNG SMDK2410 board.
*
* 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
*/
#ifndef __CONFIG_H
#define __CONFIG_H
/*
* High Level Configuration Options
* (easy to change)
*/
#define CONFIG_ARM920T 1 /* This is an ARM920T Core */
#define CONFIG_S3C2440 1 /* in a SAMSUNG S3C2410 SoC */
#define CONFIG_MINI2440 1 /* on a SAMSUNG SMDK2410 Board */
/* input clock of PLL */
#define CONFIG_SYS_CLK_FREQ 12000000/* the SMDK2410 has 12MHz input clock */
#define USE_920T_MMU 1
#undef CONFIG_USE_IRQ /* we don't need IRQ/FIQ stuff */
/*
* Size of malloc() pool
*/
#define CFG_MALLOC_LEN (CONFIG_ENV_SIZE + 128*1024)
#define CFG_GBL_DATA_SIZE 128 /* size in bytes reserved for initial data */
/*
* Hardware drivers
*/
/*modified by david, for mini2440 ,dm9000 */
#if 0
#define CONFIG_DRIVER_CS8900 1 /* we have a CS8900 on-board */
#define CS8900_BASE 0x19000300
#define CS8900_BUS16 1 /* the Linux driver does accesses as shorts */
#endif
#define CONFIG_DRIVER_DM9000 1
#define CONFIG_DM9000_USE_16BIT 1
#define CONFIG_DM9000_BASE 0x20000300
#define DM9000_IO 0x20000300
#define DM9000_DATA 0x20000304
/*
* select serial console configuration
*/
#define CONFIG_SERIAL1 1 /* we use SERIAL 1 on SMDK2410 */
/************************************************************
* RTC
************************************************************/
#define CONFIG_RTC_S3C24X0 1
/* allow to overwrite serial and ethaddr */
#define CONFIG_ENV_OVERWRITE
#define CONFIG_BAUDRATE 115200
/*
* BOOTP options
*/
#define CONFIG_BOOTP_BOOTFILESIZE
#define CONFIG_BOOTP_BOOTPATH
#define CONFIG_BOOTP_GATEWAY
#define CONFIG_BOOTP_HOSTNAME
/*
* Command line configuration.
*/
#include
#define CONFIG_CMD_CACHE
#define CONFIG_CMD_DATE
#define CONFIG_CMD_ELF
/*add by david,for 2440,ping cmd*/
#define CONFIG_CMD_PING
#define CONFIG_BOOTDELAY 3
/*#define CONFIG_BOOTARGS "root=ramfs devfs=mount console=ttySA0,9600" */
/*#define CONFIG_ETHADDR 08:00:3e:26:0a:5b */
#define CONFIG_NETMASK 255.255.255.0
#define CONFIG_IPADDR 10.0.0.110
#define CONFIG_SERVERIP 10.0.0.1
/*#define CONFIG_BOOTFILE "elinos-lart" */
/*#define CONFIG_BOOTCOMMAND "tftp; bootm" */
#if defined(CONFIG_CMD_KGDB)
#define CONFIG_KGDB_BAUDRATE 115200 /* speed to run kgdb serial port */
/* what's this ? it's not used anywhere */
#define CONFIG_KGDB_SER_INDEX 1 /* which serial port to use */
#endif
/*
* Miscellaneous configurable options
*/
#define CFG_LONGHELP /* undef to save memory */
#define CFG_PROMPT "Mini2440 # " /* Monitor Command Prompt */
#define CFG_CBSIZE 256 /* Console I/O Buffer Size */
#define CFG_PBSIZE (CFG_CBSIZE+sizeof(CFG_PROMPT)+16) /* Print Buffer Size */
#define CFG_MAXARGS 16 /* max number of command args */
#define CFG_BARGSIZE CFG_CBSIZE /* Boot Argument Buffer Size */
#define CFG_MEMTEST_START 0x30000000 /* memtest works on */
#define CFG_MEMTEST_END 0x33F00000 /* 63 MB in DRAM */
#undef CFG_CLKS_IN_HZ /* everything, incl board info, in Hz */
#define CFG_LOAD_ADDR 0x33000000 /* default load address */
/* the PWM TImer 4 uses a counter of 15625 for 10 ms, so we need */
/* it to wrap 100 times (total 1562500) to get 1 sec. */
#define CFG_HZ 1562500
/* valid baudrates */
#define CFG_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 }
/*-----------------------------------------------------------------------
* Stack sizes
*
* The stack sizes are set up in start.S using the settings below
*/
#define CONFIG_STACKSIZE (128*1024) /* regular stack */
#ifdef CONFIG_USE_IRQ
#define CONFIG_STACKSIZE_IRQ (4*1024) /* IRQ stack */
#define CONFIG_STACKSIZE_FIQ (4*1024) /* FIQ stack */
#endif
/*-----------------------------------------------------------------------
* Physical Memory Map
*/
#define CONFIG_NR_DRAM_BANKS 1 /* we have 1 bank of DRAM */
#define PHYS_SDRAM_1 0x30000000 /* SDRAM Bank #1 */
#define PHYS_SDRAM_1_SIZE 0x04000000 /* 64 MB */
#define PHYS_FLASH_1 0x00000000 /* Flash Bank #1 */
#define CFG_FLASH_BASE PHYS_FLASH_1
/*-----------------------------------------------------------------------
* FLASH and environment organization
*/
#if 0
#define CONFIG_AMD_LV400 1 /* uncomment this if you have a LV400 flash */
#define CONFIG_AMD_LV800 1 /* uncomment this if you have a LV800 flash */
#endif
#define CFG_MAX_FLASH_BANKS 1 /* max number of memory banks */
#ifdef CONFIG_AMD_LV800
#define PHYS_FLASH_SIZE 0x00100000 /* 1MB */
#define CFG_MAX_FLASH_SECT (19) /* max number of sectors on one chip */
#define CONFIG_ENV_ADDR (CFG_FLASH_BASE + 0x0F0000) /* addr of environment */
#endif
#ifdef CONFIG_AMD_LV400
#define PHYS_FLASH_SIZE 0x00080000 /* 512KB */
#define CFG_MAX_FLASH_SECT (11) /* max number of sectors on one chip */
#define CONFIG_ENV_ADDR (CFG_FLASH_BASE + 0x070000) /* addr of environment */
#endif
#define PHYS_FLASH_SIZE 0x00200000 /* 2M */
#define CFG_MAX_FLASH_SECT (32) /* max number of sectors on one chip */
#define CONFIG_ENV_ADDR (CFG_FLASH_BASE + 0x030000) /* addr of environment */
#define CFG_MONITOR_BASE TEXT_BASE
#define CFG_MONITOR_LEN (256*1024)
/* timeout values are in ticks */
#define CFG_FLASH_ERASE_TOUT (5*CFG_HZ) /* Timeout for Flash Erase */
#define CFG_FLASH_WRITE_TOUT (5*CFG_HZ) /* Timeout for Flash Write */
#define CONFIG_ENV_IS_IN_FLASH 1
#define CONFIG_ENV_SIZE 0x10000 /* Total Size of Environment Sector */
#endif /* __CONFIG_H */
u-boot20.rar 