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[Blackfin][PATCH]: fix flash unaligned copy issue

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This commit is contained in:
Aubrey Li 2007-04-05 18:28:34 +08:00
parent 25b0806fff
commit dfeeab2cd6
2 changed files with 45 additions and 42 deletions
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2
board/bf533-ezkit/flash-defines.h
View File

@ -60,7 +60,7 @@ void reset_flash(void);
int erase_flash(void);
int erase_block_flash(int, unsigned long);
void unlock_flash(long lOffset);
int write_data(long lStart, long lCount, long lStride, int *pnData);
int write_data(long lStart, long lCount, uchar *pnData);
int FillData(long lStart, long lCount, long lStride, int *pnData);
int read_data(long lStart, long lCount, long lStride, int *pnData);
int read_flash(long nOffset, int *pnValue);

85
board/bf533-ezkit/flash.c
View File

@ -1,7 +1,7 @@
/*
* U-boot - flash.c Flash driver for PSD4256GV
*
* Copyright (c) 2005 blackfin.uclinux.org
* Copyright (c) 2005-2007 Analog Devices Inc.
* This file is based on BF533EzFlash.c originally written by Analog Devices, Inc.
*
* (C) Copyright 2000-2004
@ -22,8 +22,8 @@
*
* 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
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include <asm/io.h>
@ -178,63 +178,66 @@ int flash_erase(flash_info_t * info, int s_first, int s_last)
int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
{
int ret;
ret = write_data(addr, cnt, 1, (int *)src);
int d;
if (addr % 2) {
read_flash(addr - 1 - CFG_FLASH_BASE, &d);
d = (int)((d & 0x00FF) | (*src++ << 8));
ret = write_data(addr - 1, 2, (uchar *) & d);
if (ret == FLASH_FAIL)
return ERR_NOT_ERASED;
ret = write_data(addr + 1, cnt - 1, src);
} else
ret = write_data(addr, cnt, src);
if (ret == FLASH_FAIL)
return ERR_NOT_ERASED;
return FLASH_SUCCESS;
}
int write_data(long lStart, long lCount, long lStride, int *pnData)
int write_data(long lStart, long lCount, uchar * pnData)
{
long i = 0;
int j = 0;
unsigned long ulOffset = lStart - CFG_FLASH_BASE;
int d;
int iShift = 0;
int iNumWords = 2;
int nLeftover = lCount % 4;
int nSector = 0;
int flag = 0;
for (i = 0; (i < lCount / 4) && (i < BUFFER_SIZE); i++) {
for (iShift = 0, j = 0; (j < iNumWords);
j++, ulOffset += (lStride * 2)) {
if ((ulOffset >= INVALIDLOCNSTART)
&& (ulOffset < INVALIDLOCNEND)) {
printf
("Invalid locations, Try writing to another location \n");
return FLASH_FAIL;
}
get_sector_number(ulOffset, &nSector);
read_flash(ulOffset, &d);
if (d != 0xffff) {
printf
("Flash not erased at offset 0x%x Please erase to reprogram \n",
ulOffset);
return FLASH_FAIL;
}
unlock_flash(ulOffset);
if (write_flash(ulOffset, (pnData[i] >> iShift)) < 0) {
printf("Error programming the flash \n");
return FLASH_FAIL;
}
iShift += 16;
}
if (lCount % 2) {
flag = 1;
lCount = lCount - 1;
}
if (nLeftover > 0) {
if ((ulOffset >= INVALIDLOCNSTART)
&& (ulOffset < INVALIDLOCNEND))
return FLASH_FAIL;
for (i = 0; i < lCount - 1; i += 2, ulOffset += 2) {
get_sector_number(ulOffset, &nSector);
read_flash(ulOffset, &d);
if (d != 0xffff) {
printf
("Flash already programmed. Please erase to reprogram \n");
printf("uloffset = 0x%x \t d = 0x%x\n", ulOffset, d);
("Flash not erased at offset 0x%x Please erase to reprogram \n",
ulOffset);
return FLASH_FAIL;
}
unlock_flash(ulOffset);
if (write_flash(ulOffset, pnData[i]) < 0) {
d = (int)(pnData[i] | pnData[i + 1] << 8);
write_flash(ulOffset, d);
if (poll_toggle_bit(ulOffset) < 0) {
printf("Error programming the flash \n");
return FLASH_FAIL;
}
if ((i > 0) && (!(i % AFP_SectorSize2)))
printf(".");
}
if (flag) {
get_sector_number(ulOffset, &nSector);
read_flash(ulOffset, &d);
if (d != 0xffff) {
printf
("Flash not erased at offset 0x%x Please erase to reprogram \n",
ulOffset);
return FLASH_FAIL;
}
unlock_flash(ulOffset);
d = (int)(pnData[i] | (d & 0xFF00));
write_flash(ulOffset, d);
if (poll_toggle_bit(ulOffset) < 0) {
printf("Error programming the flash \n");
return FLASH_FAIL;
}