git.sur5r.net Git - u-boot/blob - drivers/dataflash.c

   1 /* LowLevel function for ATMEL DataFlash support
   2  * Author : Hamid Ikdoumi (Atmel)
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation; either version 2 of
   7  * the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  17  * MA 02111-1307 USA
  18  *
  19  */
  20 #include <common.h>
  21 #include <config.h>
  22 #ifdef CONFIG_HAS_DATAFLASH
  23 #include <asm/hardware.h>
  24 #include <dataflash.h>
  25
  26 AT91S_DATAFLASH_INFO dataflash_info[CFG_MAX_DATAFLASH_BANKS];
  27 static AT91S_DataFlash DataFlashInst;
  28
  29 int cs[][CFG_MAX_DATAFLASH_BANKS] = {
  30         {CFG_DATAFLASH_LOGIC_ADDR_CS0, 0},      /* Logical adress, CS */
  31         {CFG_DATAFLASH_LOGIC_ADDR_CS3, 3}
  32 };
  33
  34 extern void AT91F_SpiInit (void);
  35 extern int AT91F_DataflashProbe (int i, AT91PS_DataflashDesc pDesc);
  36 extern int AT91F_DataFlashRead (AT91PS_DataFlash pDataFlash,
  37                                 unsigned long addr,
  38                                 unsigned long size, char *buffer);
  39
  40
  41 int AT91F_DataflashInit (void)
  42 {
  43         int i, j;
  44         int dfcode;
  45
  46         AT91F_SpiInit ();
  47
  48         for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
  49
  50                 dataflash_info[i].id = 0;
  51                 dataflash_info[i].Device.pages_number = 0;
  52                 dfcode = AT91F_DataflashProbe (cs[i][1], &dataflash_info[i].Desc);
  53
  54                 switch (dfcode) {
  55                 case AT45DB161:
  56                         dataflash_info[i].Device.pages_number = 4096;
  57                         dataflash_info[i].Device.pages_size = 528;
  58                         dataflash_info[i].Device.page_offset = 10;
  59                         dataflash_info[i].Device.byte_mask = 0x300;
  60                         dataflash_info[i].Device.cs = cs[i][1];
  61                         dataflash_info[i].Desc.DataFlash_state = IDLE;
  62                         dataflash_info[i].logical_address = cs[i][0];
  63                         dataflash_info[i].id = dfcode;
  64                         break;
  65
  66                 case AT45DB321:
  67                         dataflash_info[i].Device.pages_number = 8192;
  68                         dataflash_info[i].Device.pages_size = 528;
  69                         dataflash_info[i].Device.page_offset = 10;
  70                         dataflash_info[i].Device.byte_mask = 0x300;
  71                         dataflash_info[i].Device.cs = cs[i][1];
  72                         dataflash_info[i].Desc.DataFlash_state = IDLE;
  73                         dataflash_info[i].logical_address = cs[i][0];
  74                         dataflash_info[i].id = dfcode;
  75                         break;
  76
  77                 case AT45DB642:
  78                         dataflash_info[i].Device.pages_number = 8192;
  79                         dataflash_info[i].Device.pages_size = 1056;
  80                         dataflash_info[i].Device.page_offset = 11;
  81                         dataflash_info[i].Device.byte_mask = 0x700;
  82                         dataflash_info[i].Device.cs = cs[i][1];
  83                         dataflash_info[i].Desc.DataFlash_state = IDLE;
  84                         dataflash_info[i].logical_address = cs[i][0];
  85                         dataflash_info[i].id = dfcode;
  86                         break;
  87
  88                 default:
  89                         break;
  90                 }
  91
  92                 for (j = 0; j < dataflash_info[i].Device.pages_number; j++)
  93                         dataflash_info[i].protect[j] = FLAG_PROTECT_SET;
  94
  95         }
  96         return (1);
  97 }
  98
  99
 100 void dataflash_print_info (void)
 101 {
 102         int i;
 103
 104         for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
 105                 if (dataflash_info[i].id != 0) {
 106                         printf ("DataFlash:");
 107                         switch (dataflash_info[i].id) {
 108                         case AT45DB161:
 109                                 printf ("AT45DB161\n");
 110                                 break;
 111
 112                         case AT45DB321:
 113                                 printf ("AT45DB321\n");
 114                                 break;
 115
 116                         case AT45DB642:
 117                                 printf ("AT45DB642\n");
 118                                 break;
 119                         }
 120
 121                         printf ("Nb pages: %6d\n"
 122                                 "Page Size: %6d\n"
 123                                 "Size=%8d bytes\n"
 124                                 "Logical address: 0x%08X\n",
 125                                 (unsigned int) dataflash_info[i].Device.pages_number,
 126                                 (unsigned int) dataflash_info[i].Device.pages_size,
 127                                 (unsigned int) dataflash_info[i].Device.pages_number *
 128                                 dataflash_info[i].Device.pages_size,
 129                                 (unsigned int) dataflash_info[i].logical_address);
 130                 }
 131         }
 132 }
 133
 134
 135 /*------------------------------------------------------------------------------*/
 136 /* Function Name       : AT91F_DataflashSelect                                  */
 137 /* Object              : Select the correct device                              */
 138 /*------------------------------------------------------------------------------*/
 139 AT91PS_DataFlash AT91F_DataflashSelect (AT91PS_DataFlash pFlash,
 140                                                                                 unsigned int *addr)
 141 {
 142         char addr_valid = 0;
 143         int i;
 144
 145         for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++)
 146                 if ((*addr & 0xFF000000) == dataflash_info[i].logical_address) {
 147                         addr_valid = 1;
 148                         break;
 149                 }
 150         if (!addr_valid) {
 151                 pFlash = (AT91PS_DataFlash) 0;
 152                 return pFlash;
 153         }
 154         pFlash->pDataFlashDesc = &(dataflash_info[i].Desc);
 155         pFlash->pDevice = &(dataflash_info[i].Device);
 156         *addr -= dataflash_info[i].logical_address;
 157         return (pFlash);
 158 }
 159
 160 /*------------------------------------------------------------------------------*/
 161 /* Function Name       : addr_dataflash                                         */
 162 /* Object              : Test if address is valid                               */
 163 /*------------------------------------------------------------------------------*/
 164 int addr_dataflash (unsigned long addr)
 165 {
 166         int addr_valid = 0;
 167         int i;
 168
 169         for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
 170                 if ((((int) addr) & 0xFF000000) ==
 171                         dataflash_info[i].logical_address) {
 172                         addr_valid = 1;
 173                         break;
 174                 }
 175         }
 176
 177         return addr_valid;
 178 }
 179
 180 /*------------------------------------------------------------------------------*/
 181 /* Function Name       : read_dataflash                                         */
 182 /* Object              : dataflash memory read                                  */
 183 /*------------------------------------------------------------------------------*/
 184 int read_dataflash (unsigned long addr, unsigned long size, char *result)
 185 {
 186         int AddrToRead = addr;
 187         AT91PS_DataFlash pFlash = &DataFlashInst;
 188
 189         pFlash = AT91F_DataflashSelect (pFlash, &AddrToRead);
 190         if (pFlash == 0)
 191                 return -1;
 192
 193         return (AT91F_DataFlashRead (pFlash, AddrToRead, size, result));
 194 }
 195
 196
 197 /*-----------------------------------------------------------------------------*/
 198 /* Function Name       : write_dataflash                                       */
 199 /* Object              : write a block in dataflash                            */
 200 /*-----------------------------------------------------------------------------*/
 201 int write_dataflash (unsigned long addr_dest, unsigned long addr_src,
 202                      unsigned long size)
 203 {
 204         extern AT91S_DataFlashStatus AT91F_DataFlashWrite(
 205                         AT91PS_DataFlash, uchar *, int, int);
 206         int AddrToWrite = addr_dest;
 207         AT91PS_DataFlash pFlash = &DataFlashInst;
 208
 209         pFlash = AT91F_DataflashSelect (pFlash, &AddrToWrite);
 210         if (AddrToWrite == -1)
 211                 return -1;
 212
 213         return AT91F_DataFlashWrite (pFlash, (char *) addr_src, AddrToWrite,
 214                                                                  size);
 215 }
 216
 217
 218 void dataflash_perror (int err)
 219 {
 220         switch (err) {
 221         case ERR_OK:
 222                 break;
 223         case ERR_TIMOUT:
 224                 printf ("Timeout writing to DataFlash\n");
 225                 break;
 226         case ERR_PROTECTED:
 227                 printf ("Can't write to protected DataFlash sectors\n");
 228                 break;
 229         case ERR_INVAL:
 230                 printf ("Outside available DataFlash\n");
 231                 break;
 232         case ERR_UNKNOWN_FLASH_TYPE:
 233                 printf ("Unknown Type of DataFlash\n");
 234                 break;
 235         case ERR_PROG_ERROR:
 236                 printf ("General DataFlash Programming Error\n");
 237                 break;
 238         default:
 239                 printf ("%s[%d] FIXME: rc=%d\n", __FILE__, __LINE__, err);
 240                 break;
 241         }
 242 }
 243
 244 #endif