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|
/* LowLevel function for ATMEL DataFlash support
* Author : Hamid Ikdoumi (Atmel)
*
* 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 <config.h>
#include <asm/hardware.h>
#include <dataflash.h>
static AT91S_DataFlash DataFlashInst;
extern void AT91F_SpiInit (void);
extern int AT91F_DataflashProbe (int i, AT91PS_DataflashDesc pDesc);
extern int AT91F_DataFlashRead (AT91PS_DataFlash pDataFlash,
unsigned long addr,
unsigned long size, char *buffer);
extern int AT91F_DataFlashWrite( AT91PS_DataFlash pDataFlash,
unsigned char *src,
int dest,
int size );
int AT91F_DataflashInit (void)
{
int i, j;
int dfcode;
int part;
int last_part;
int found[CONFIG_SYS_MAX_DATAFLASH_BANKS];
unsigned char protected;
AT91F_SpiInit ();
for (i = 0; i < CONFIG_SYS_MAX_DATAFLASH_BANKS; i++) {
found[i] = 0;
dataflash_info[i].Desc.state = IDLE;
dataflash_info[i].id = 0;
dataflash_info[i].Device.pages_number = 0;
dfcode = AT91F_DataflashProbe (cs[i].cs,
&dataflash_info[i].Desc);
switch (dfcode) {
case AT45DB021:
dataflash_info[i].Device.pages_number = 1024;
dataflash_info[i].Device.pages_size = 264;
dataflash_info[i].Device.page_offset = 9;
dataflash_info[i].Device.byte_mask = 0x300;
dataflash_info[i].Device.cs = cs[i].cs;
dataflash_info[i].Desc.DataFlash_state = IDLE;
dataflash_info[i].logical_address = cs[i].addr;
dataflash_info[i].id = dfcode;
found[i] += dfcode;;
break;
case AT45DB081:
dataflash_info[i].Device.pages_number = 4096;
dataflash_info[i].Device.pages_size = 264;
dataflash_info[i].Device.page_offset = 9;
dataflash_info[i].Device.byte_mask = 0x300;
dataflash_info[i].Device.cs = cs[i].cs;
dataflash_info[i].Desc.DataFlash_state = IDLE;
dataflash_info[i].logical_address = cs[i].addr;
dataflash_info[i].id = dfcode;
found[i] += dfcode;;
break;
case AT45DB161:
dataflash_info[i].Device.pages_number = 4096;
dataflash_info[i].Device.pages_size = 528;
dataflash_info[i].Device.page_offset = 10;
dataflash_info[i].Device.byte_mask = 0x300;
dataflash_info[i].Device.cs = cs[i].cs;
dataflash_info[i].Desc.DataFlash_state = IDLE;
dataflash_info[i].logical_address = cs[i].addr;
dataflash_info[i].id = dfcode;
found[i] += dfcode;;
break;
case AT45DB321:
dataflash_info[i].Device.pages_number = 8192;
dataflash_info[i].Device.pages_size = 528;
dataflash_info[i].Device.page_offset = 10;
dataflash_info[i].Device.byte_mask = 0x300;
dataflash_info[i].Device.cs = cs[i].cs;
dataflash_info[i].Desc.DataFlash_state = IDLE;
dataflash_info[i].logical_address = cs[i].addr;
dataflash_info[i].id = dfcode;
found[i] += dfcode;;
break;
case AT45DB642:
dataflash_info[i].Device.pages_number = 8192;
dataflash_info[i].Device.pages_size = 1056;
dataflash_info[i].Device.page_offset = 11;
dataflash_info[i].Device.byte_mask = 0x700;
dataflash_info[i].Device.cs = cs[i].cs;
dataflash_info[i].Desc.DataFlash_state = IDLE;
dataflash_info[i].logical_address = cs[i].addr;
dataflash_info[i].id = dfcode;
found[i] += dfcode;;
break;
case AT45DB128:
dataflash_info[i].Device.pages_number = 16384;
dataflash_info[i].Device.pages_size = 1056;
dataflash_info[i].Device.page_offset = 11;
dataflash_info[i].Device.byte_mask = 0x700;
dataflash_info[i].Device.cs = cs[i].cs;
dataflash_info[i].Desc.DataFlash_state = IDLE;
dataflash_info[i].logical_address = cs[i].addr;
dataflash_info[i].id = dfcode;
found[i] += dfcode;;
break;
default:
dfcode = 0;
break;
}
/* set the last area end to the dataflash size*/
area_list[NB_DATAFLASH_AREA - 1].end =
(dataflash_info[i].Device.pages_number *
dataflash_info[i].Device.pages_size) - 1;
part = 0;
last_part = 0;
/* set the area addresses */
for(j = 0; j < NB_DATAFLASH_AREA; j++) {
if(found[i]!=0) {
dataflash_info[i].Device.area_list[j].start =
area_list[part].start +
dataflash_info[i].logical_address;
if(area_list[part].end == 0xffffffff) {
dataflash_info[i].Device.area_list[j].end =
dataflash_info[i].end_address +
dataflash_info[i].logical_address;
last_part = 1;
} else {
dataflash_info[i].Device.area_list[j].end =
area_list[part].end +
dataflash_info[i].logical_address;
}
protected = area_list[part].protected;
/* Set the environment according to the label...*/
if(protected == FLAG_PROTECT_INVALID) {
dataflash_info[i].Device.area_list[j].protected =
FLAG_PROTECT_INVALID;
} else {
dataflash_info[i].Device.area_list[j].protected =
protected;
}
strcpy((char*)(dataflash_info[i].Device.area_list[j].label),
(const char *)area_list[part].label);
}
part++;
}
}
return found[0];
}
void AT91F_DataflashSetEnv (void)
{
int i, j;
int part;
unsigned char env;
unsigned char s[32]; /* Will fit a long int in hex */
unsigned long start;
for (i = 0, part= 0; i < CONFIG_SYS_MAX_DATAFLASH_BANKS; i++) {
for(j = 0; j < NB_DATAFLASH_AREA; j++) {
env = area_list[part].setenv;
/* Set the environment according to the label...*/
if((env & FLAG_SETENV) == FLAG_SETENV) {
start = dataflash_info[i].Device.area_list[j].start;
sprintf((char*) s,"%lX",start);
setenv((char*) area_list[part].label,(char*) s);
}
part++;
}
}
}
void dataflash_print_info (void)
{
int i, j;
for (i = 0; i < CONFIG_SYS_MAX_DATAFLASH_BANKS; i++) {
if (dataflash_info[i].id != 0) {
printf("DataFlash:");
switch (dataflash_info[i].id) {
case AT45DB021:
printf("AT45DB021\n");
break;
case AT45DB161:
printf("AT45DB161\n");
break;
case AT45DB321:
printf("AT45DB321\n");
break;
case AT45DB642:
printf("AT45DB642\n");
break;
case AT45DB128:
printf("AT45DB128\n");
break;
}
printf("Nb pages: %6d\n"
"Page Size: %6d\n"
"Size=%8d bytes\n"
"Logical address: 0x%08X\n",
(unsigned int) dataflash_info[i].Device.pages_number,
(unsigned int) dataflash_info[i].Device.pages_size,
(unsigned int) dataflash_info[i].Device.pages_number *
dataflash_info[i].Device.pages_size,
(unsigned int) dataflash_info[i].logical_address);
for (j = 0; j < NB_DATAFLASH_AREA; j++) {
switch(dataflash_info[i].Device.area_list[j].protected) {
case FLAG_PROTECT_SET:
case FLAG_PROTECT_CLEAR:
printf("Area %i:\t%08lX to %08lX %s", j,
dataflash_info[i].Device.area_list[j].start,
dataflash_info[i].Device.area_list[j].end,
(dataflash_info[i].Device.area_list[j].protected==FLAG_PROTECT_SET) ? "(RO)" : " ");
printf(" %s\n", dataflash_info[i].Device.area_list[j].label);
break;
case FLAG_PROTECT_INVALID:
break;
}
}
}
}
}
/*---------------------------------------------------------------------------*/
/* Function Name : AT91F_DataflashSelect */
/* Object : Select the correct device */
/*---------------------------------------------------------------------------*/
AT91PS_DataFlash AT91F_DataflashSelect (AT91PS_DataFlash pFlash,
unsigned long *addr)
{
char addr_valid = 0;
int i;
for (i = 0; i < CONFIG_SYS_MAX_DATAFLASH_BANKS; i++)
if ( dataflash_info[i].id
&& ((((int) *addr) & 0xFF000000) ==
dataflash_info[i].logical_address)) {
addr_valid = 1;
break;
}
if (!addr_valid) {
pFlash = (AT91PS_DataFlash) 0;
return pFlash;
}
pFlash->pDataFlashDesc = &(dataflash_info[i].Desc);
pFlash->pDevice = &(dataflash_info[i].Device);
*addr -= dataflash_info[i].logical_address;
return (pFlash);
}
/*---------------------------------------------------------------------------*/
/* Function Name : addr_dataflash */
/* Object : Test if address is valid */
/*---------------------------------------------------------------------------*/
int addr_dataflash (unsigned long addr)
{
int addr_valid = 0;
int i;
for (i = 0; i < CONFIG_SYS_MAX_DATAFLASH_BANKS; i++) {
if ((((int) addr) & 0xFF000000) ==
dataflash_info[i].logical_address) {
addr_valid = 1;
break;
}
}
return addr_valid;
}
/*---------------------------------------------------------------------------*/
/* Function Name : size_dataflash */
/* Object : Test if address is valid regarding the size */
/*---------------------------------------------------------------------------*/
int size_dataflash (AT91PS_DataFlash pdataFlash, unsigned long addr,
unsigned long size)
{
/* is outside the dataflash */
if (((int)addr & 0x0FFFFFFF) > (pdataFlash->pDevice->pages_size *
pdataFlash->pDevice->pages_number)) return 0;
/* is too large for the dataflash */
if (size > ((pdataFlash->pDevice->pages_size *
pdataFlash->pDevice->pages_number) -
((int)addr & 0x0FFFFFFF))) return 0;
return 1;
}
/*---------------------------------------------------------------------------*/
/* Function Name : prot_dataflash */
/* Object : Test if destination area is protected */
/*---------------------------------------------------------------------------*/
int prot_dataflash (AT91PS_DataFlash pdataFlash, unsigned long addr)
{
int area;
/* find area */
for (area = 0; area < NB_DATAFLASH_AREA; area++) {
if ((addr >= pdataFlash->pDevice->area_list[area].start) &&
(addr < pdataFlash->pDevice->area_list[area].end))
break;
}
if (area == NB_DATAFLASH_AREA)
return -1;
/*test protection value*/
if (pdataFlash->pDevice->area_list[area].protected == FLAG_PROTECT_SET)
return 0;
if (pdataFlash->pDevice->area_list[area].protected == FLAG_PROTECT_INVALID)
return 0;
return 1;
}
/*--------------------------------------------------------------------------*/
/* Function Name : dataflash_real_protect */
/* Object : protect/unprotect area */
/*--------------------------------------------------------------------------*/
int dataflash_real_protect (int flag, unsigned long start_addr,
unsigned long end_addr)
{
int i,j, area1, area2, addr_valid = 0;
/* find dataflash */
for (i = 0; i < CONFIG_SYS_MAX_DATAFLASH_BANKS; i++) {
if ((((int) start_addr) & 0xF0000000) ==
dataflash_info[i].logical_address) {
addr_valid = 1;
break;
}
}
if (!addr_valid) {
return -1;
}
/* find start area */
for (area1 = 0; area1 < NB_DATAFLASH_AREA; area1++) {
if (start_addr == dataflash_info[i].Device.area_list[area1].start)
break;
}
if (area1 == NB_DATAFLASH_AREA) return -1;
/* find end area */
for (area2 = 0; area2 < NB_DATAFLASH_AREA; area2++) {
if (end_addr == dataflash_info[i].Device.area_list[area2].end)
break;
}
if (area2 == NB_DATAFLASH_AREA)
return -1;
/*set protection value*/
for(j = area1; j < area2 + 1 ; j++)
if(dataflash_info[i].Device.area_list[j].protected
!= FLAG_PROTECT_INVALID) {
if (flag == 0) {
dataflash_info[i].Device.area_list[j].protected
= FLAG_PROTECT_CLEAR;
} else {
dataflash_info[i].Device.area_list[j].protected
= FLAG_PROTECT_SET;
}
}
return (area2 - area1 + 1);
}
/*---------------------------------------------------------------------------*/
/* Function Name : read_dataflash */
/* Object : dataflash memory read */
/*---------------------------------------------------------------------------*/
int read_dataflash (unsigned long addr, unsigned long size, char *result)
{
unsigned long AddrToRead = addr;
AT91PS_DataFlash pFlash = &DataFlashInst;
pFlash = AT91F_DataflashSelect (pFlash, &AddrToRead);
if (pFlash == 0)
return ERR_UNKNOWN_FLASH_TYPE;
if (size_dataflash(pFlash,addr,size) == 0)
return ERR_INVAL;
return (AT91F_DataFlashRead (pFlash, AddrToRead, size, result));
}
/*---------------------------------------------------------------------------*/
/* Function Name : write_dataflash */
/* Object : write a block in dataflash */
/*---------------------------------------------------------------------------*/
int write_dataflash (unsigned long addr_dest, unsigned long addr_src,
unsigned long size)
{
unsigned long AddrToWrite = addr_dest;
AT91PS_DataFlash pFlash = &DataFlashInst;
pFlash = AT91F_DataflashSelect (pFlash, &AddrToWrite);
if (pFlash == 0)
return ERR_UNKNOWN_FLASH_TYPE;
if (size_dataflash(pFlash,addr_dest,size) == 0)
return ERR_INVAL;
if (prot_dataflash(pFlash,addr_dest) == 0)
return ERR_PROTECTED;
if (AddrToWrite == -1)
return -1;
return AT91F_DataFlashWrite (pFlash, (uchar *)addr_src,
AddrToWrite, size);
}
void dataflash_perror (int err)
{
switch (err) {
case ERR_OK:
break;
case ERR_TIMOUT:
printf("Timeout writing to DataFlash\n");
break;
case ERR_PROTECTED:
printf("Can't write to protected/invalid DataFlash sectors\n");
break;
case ERR_INVAL:
printf("Outside available DataFlash\n");
break;
case ERR_UNKNOWN_FLASH_TYPE:
printf("Unknown Type of DataFlash\n");
break;
case ERR_PROG_ERROR:
printf("General DataFlash Programming Error\n");
break;
default:
printf("%s[%d] FIXME: rc=%d\n", __FILE__, __LINE__, err);
break;
}
}
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