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u-boot/board/ezkit533/flash.c
Wolfgang Denk 8e7b703a62 Coding Style cleanup
2006-03-12 02:55:22 +01:00

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/*
* U-boot - flash.c Flash driver for PSD4256GV
*
* Copyright (c) 2005 blackfin.uclinux.org
* This file is based on BF533EzFlash.c originally written by Analog Devices, Inc.
*
* (C) Copyright 2000-2004
* 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
*/
#include "flash-defines.h"
void flash_reset(void)
{
reset_flash();
}
unsigned long flash_get_size(ulong baseaddr, flash_info_t * info,
int bank_flag)
{
int id = 0, i = 0;
static int FlagDev = 1;
id = get_codes();
if(FlagDev) {
#ifdef DEBUG
printf("Device ID of the Flash is %x\n", id);
#endif
FlagDev = 0;
}
info->flash_id = id;
switch (bank_flag) {
case 0:
for (i = PriFlashABegin; i < SecFlashABegin; i++)
info->start[i] = (baseaddr + (i * AFP_SectorSize1));
info->size = 0x200000;
info->sector_count = 32;
break;
case 1:
info->start[0] = baseaddr + SecFlashASec1Off;
info->start[1] = baseaddr + SecFlashASec2Off;
info->start[2] = baseaddr + SecFlashASec3Off;
info->start[3] = baseaddr + SecFlashASec4Off;
info->size = 0x10000;
info->sector_count = 4;
break;
case 2:
info->start[0] = baseaddr + SecFlashBSec1Off;
info->start[1] = baseaddr + SecFlashBSec2Off;
info->start[2] = baseaddr + SecFlashBSec3Off;
info->start[3] = baseaddr + SecFlashBSec4Off;
info->size = 0x10000;
info->sector_count = 4;
break;
}
return (info->size);
}
unsigned long flash_init(void)
{
unsigned long size_b0, size_b1, size_b2;
int i;
size_b0 = size_b1 = size_b2 = 0;
#ifdef DEBUG
printf("Flash Memory Start 0x%x\n", CFG_FLASH_BASE);
printf("Memory Map for the Flash\n");
printf("0x20000000 - 0x200FFFFF Flash A Primary (1MB)\n");
printf("0x20100000 - 0x201FFFFF Flash B Primary (1MB)\n");
printf("0x20200000 - 0x2020FFFF Flash A Secondary (64KB)\n");
printf("0x20280000 - 0x2028FFFF Flash B Secondary (64KB)\n");
printf("Please type command flinfo for information on Sectors \n");
#endif
for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
flash_info[i].flash_id = FLASH_UNKNOWN;
}
size_b0 = flash_get_size(CFG_FLASH0_BASE, &flash_info[0], 0);
size_b1 = flash_get_size(CFG_FLASH0_BASE, &flash_info[1], 1);
size_b2 = flash_get_size(CFG_FLASH0_BASE, &flash_info[2], 2);
if (flash_info[0].flash_id == FLASH_UNKNOWN || size_b0 == 0) {
printf("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
size_b0, size_b0 >> 20);
}
(void)flash_protect(FLAG_PROTECT_SET,CFG_FLASH0_BASE,(flash_info[0].start[2] - 1),&flash_info[0]);
return (size_b0 + size_b1 + size_b2);
}
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) {
case FLASH_PSD4256GV:
printf("ST Microelectronics ");
break;
default:
printf("Unknown Vendor ");
break;
}
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;
}
int flash_erase(flash_info_t * info, int s_first, int s_last)
{
int cnt = 0,i;
int prot,sect;
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");
cnt = s_last - s_first + 1;
if (cnt == FLASH_TOT_SECT) {
printf("Erasing flash, Please Wait \n");
if(erase_flash() < 0) {
printf("Erasing flash failed \n");
return FLASH_FAIL;
}
} else {
printf("Erasing Flash locations, Please Wait\n");
for (i = s_first; i <= s_last; i++) {
if (info->protect[i] == 0) { /* not protected */
if(erase_block_flash(i, info->start[i]) < 0) {
printf("Error Sector erasing \n");
return FLASH_FAIL;
}
}
}
}
return FLASH_SUCCESS;
}
int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
{
int ret;
ret = write_data(addr, cnt, 1, (int *) src);
if(ret == FLASH_FAIL)
return ERR_NOT_ERASED;
return FLASH_SUCCESS;
}
int write_data(long lStart, long lCount, long lStride, int *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;
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 (nLeftover > 0) {
if ((ulOffset >= INVALIDLOCNSTART)
&& (ulOffset < INVALIDLOCNEND))
return FLASH_FAIL;
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);
return FLASH_FAIL;
}
unlock_flash(ulOffset);
if(write_flash(ulOffset, pnData[i]) < 0) {
printf("Error programming the flash \n");
return FLASH_FAIL;
}
}
return FLASH_SUCCESS;
}
int read_data(long ulStart, long lCount, long lStride, int *pnData)
{
long i = 0;
int j = 0;
long ulOffset = ulStart;
int iShift = 0;
int iNumWords = 2;
int nLeftover = lCount % 4;
int nHi, nLow;
int nSector = 0;
for (i = 0; (i < lCount / 4) && (i < BUFFER_SIZE); i++) {
for (iShift = 0, j = 0; j < iNumWords; j += 2) {
if ((ulOffset >= INVALIDLOCNSTART)
&& (ulOffset < INVALIDLOCNEND))
return FLASH_FAIL;
get_sector_number(ulOffset, &nSector);
read_flash(ulOffset, &nLow);
ulOffset += (lStride * 2);
read_flash(ulOffset, &nHi);
ulOffset += (lStride * 2);
pnData[i] = (nHi << 16) | nLow;
}
}
if (nLeftover > 0) {
if ((ulOffset >= INVALIDLOCNSTART)
&& (ulOffset < INVALIDLOCNEND))
return FLASH_FAIL;
get_sector_number(ulOffset, &nSector);
read_flash(ulOffset, &pnData[i]);
}
return FLASH_SUCCESS;
}
int write_flash(long nOffset, int nValue)
{
long addr;
addr = (CFG_FLASH_BASE + nOffset);
asm("ssync;");
*(unsigned volatile short *) addr = nValue;
asm("ssync;");
if(poll_toggle_bit(nOffset) < 0)
return FLASH_FAIL;
return FLASH_SUCCESS;
}
int read_flash(long nOffset, int *pnValue)
{
int nValue = 0x0;
long addr = (CFG_FLASH_BASE + nOffset);
if (nOffset != 0x2)
reset_flash();
asm("ssync;");
nValue = *(volatile unsigned short *) addr;
asm("ssync;");
*pnValue = nValue;
return TRUE;
}
int poll_toggle_bit(long lOffset)
{
unsigned int u1,u2;
unsigned long timeout = 0xFFFFFFFF;
volatile unsigned long *FB = (volatile unsigned long *)(0x20000000 + lOffset);
while(1) {
if(timeout < 0)
break;
u1 = *(volatile unsigned short *)FB;
u2 = *(volatile unsigned short *)FB;
if((u1 & 0x0040) == (u2 & 0x0040))
return FLASH_SUCCESS;
if((u2 & 0x0020) == 0x0000)
continue;
u1 = *(volatile unsigned short *)FB;
if((u2 & 0x0040) == (u1 & 0x0040))
return FLASH_SUCCESS;
else {
reset_flash();
return FLASH_FAIL;
}
timeout--;
}
printf("Time out occured \n");
if(timeout <0) return FLASH_FAIL;
}
void reset_flash(void)
{
write_flash(WRITESEQ1, RESET_VAL);
/* Wait for 10 micro seconds */
udelay(10);
}
int erase_flash(void)
{
write_flash(WRITESEQ1, WRITEDATA1);
write_flash(WRITESEQ2, WRITEDATA2);
write_flash(WRITESEQ3, WRITEDATA3);
write_flash(WRITESEQ4, WRITEDATA4);
write_flash(WRITESEQ5, WRITEDATA5);
write_flash(WRITESEQ6, WRITEDATA6);
if(poll_toggle_bit(0x0000) < 0)
return FLASH_FAIL;
write_flash(SecFlashAOff + WRITESEQ1, WRITEDATA1);
write_flash(SecFlashAOff + WRITESEQ2, WRITEDATA2);
write_flash(SecFlashAOff + WRITESEQ3, WRITEDATA3);
write_flash(SecFlashAOff + WRITESEQ4, WRITEDATA4);
write_flash(SecFlashAOff + WRITESEQ5, WRITEDATA5);
write_flash(SecFlashAOff + WRITESEQ6, WRITEDATA6);
if(poll_toggle_bit(SecFlashASec1Off) < 0)
return FLASH_FAIL;
write_flash(PriFlashBOff + WRITESEQ1, WRITEDATA1);
write_flash(PriFlashBOff + WRITESEQ2, WRITEDATA2);
write_flash(PriFlashBOff + WRITESEQ3, WRITEDATA3);
write_flash(PriFlashBOff + WRITESEQ4, WRITEDATA4);
write_flash(PriFlashBOff + WRITESEQ5, WRITEDATA5);
write_flash(PriFlashBOff + WRITESEQ6, WRITEDATA6);
if(poll_toggle_bit(PriFlashBOff) <0)
return FLASH_FAIL;
write_flash(SecFlashBOff + WRITESEQ1, WRITEDATA1);
write_flash(SecFlashBOff + WRITESEQ2, WRITEDATA2);
write_flash(SecFlashBOff + WRITESEQ3, WRITEDATA3);
write_flash(SecFlashBOff + WRITESEQ4, WRITEDATA4);
write_flash(SecFlashBOff + WRITESEQ5, WRITEDATA5);
write_flash(SecFlashBOff + WRITESEQ6, WRITEDATA6);
if(poll_toggle_bit(SecFlashBOff) < 0)
return FLASH_FAIL;
return FLASH_SUCCESS;
}
int erase_block_flash(int nBlock, unsigned long address)
{
long ulSectorOff = 0x0;
if ((nBlock < 0) || (nBlock > AFP_NumSectors))
return FALSE;
ulSectorOff = (address - CFG_FLASH_BASE);
write_flash((WRITESEQ1 | ulSectorOff), WRITEDATA1);
write_flash((WRITESEQ2 | ulSectorOff), WRITEDATA2);
write_flash((WRITESEQ3 | ulSectorOff), WRITEDATA3);
write_flash((WRITESEQ4 | ulSectorOff), WRITEDATA4);
write_flash((WRITESEQ5 | ulSectorOff), WRITEDATA5);
write_flash(ulSectorOff, BlockEraseVal);
if(poll_toggle_bit(ulSectorOff) < 0)
return FLASH_FAIL;
return FLASH_SUCCESS;
}
void unlock_flash(long ulOffset)
{
unsigned long ulOffsetAddr = ulOffset;
ulOffsetAddr &= 0xFFFF0000;
write_flash((WRITESEQ1 | ulOffsetAddr), UNLOCKDATA1);
write_flash((WRITESEQ2 | ulOffsetAddr), UNLOCKDATA2);
write_flash((WRITESEQ3 | ulOffsetAddr), UNLOCKDATA3);
}
int get_codes()
{
int dev_id = 0;
write_flash(WRITESEQ1, GETCODEDATA1);
write_flash(WRITESEQ2, GETCODEDATA2);
write_flash(WRITESEQ3, GETCODEDATA3);
read_flash(0x0002, &dev_id);
dev_id &= 0x00FF;
reset_flash();
return dev_id;
}
void get_sector_number(long ulOffset, int *pnSector)
{
int nSector = 0;
if (ulOffset >= SecFlashAOff) {
if ((ulOffset < SecFlashASec1Off)
&& (ulOffset < SecFlashASec2Off)) {
nSector = SECT32;
} else if ((ulOffset >= SecFlashASec2Off)
&& (ulOffset < SecFlashASec3Off)) {
nSector = SECT33;
} else if ((ulOffset >= SecFlashASec3Off)
&& (ulOffset < SecFlashASec4Off)) {
nSector = SECT34;
} else if ((ulOffset >= SecFlashASec4Off)
&& (ulOffset < SecFlashAEndOff)) {
nSector = SECT35;
}
} else if (ulOffset >= SecFlashBOff) {
if ((ulOffset < SecFlashBSec1Off)
&& (ulOffset < SecFlashBSec2Off)) {
nSector = SECT36;
}
if ((ulOffset < SecFlashBSec2Off)
&& (ulOffset < SecFlashBSec3Off)) {
nSector = SECT37;
}
if ((ulOffset < SecFlashBSec3Off)
&& (ulOffset < SecFlashBSec4Off)) {
nSector = SECT38;
}
if ((ulOffset < SecFlashBSec4Off)
&& (ulOffset < SecFlashBEndOff)) {
nSector = SECT39;
}
} else if ((ulOffset >= PriFlashAOff) && (ulOffset < SecFlashAOff)) {
nSector = ulOffset & 0xffff0000;
nSector = ulOffset >> 16;
nSector = nSector & 0x000ff;
}
if ((nSector >= 0) && (nSector < AFP_NumSectors)) {
*pnSector = nSector;
}
}
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