target/linux/at91/image/dfboot/src/dataflash.c

   1 /*----------------------------------------------------------------------------
   2  *         ATMEL Microcontroller Software Support  -  ROUSSET  -
   3  *----------------------------------------------------------------------------
   4  * The software is delivered "AS IS" without warranty or condition of any
   5  * kind, either express, implied or statutory. This includes without
   6  * limitation any warranty or condition with respect to merchantability or
   7  * fitness for any particular purpose, or against the infringements of
   8  * intellectual property rights of others.
   9  *----------------------------------------------------------------------------
  10  * File Name           : dataflash.c
  11  * Object              : High level functions for the dataflash
  12  * Creation            : HIi   10/10/2003
  13  *----------------------------------------------------------------------------
  14  */
  15 #include "config.h"
  16 #include "stdio.h"
  17 #include "dataflash.h"
  18
  19
  20 AT91S_DATAFLASH_INFO dataflash_info[CFG_MAX_DATAFLASH_BANKS];
  21 static AT91S_DataFlash DataFlashInst;
  22
  23 int cs[][CFG_MAX_DATAFLASH_BANKS] = {
  24         {CFG_DATAFLASH_LOGIC_ADDR_CS0, 0},      /* Logical adress, CS */
  25         {CFG_DATAFLASH_LOGIC_ADDR_CS3, 3}
  26 };
  27
  28 int AT91F_DataflashInit(void)
  29 {
  30         int i;
  31         int dfcode;
  32         int Nb_device = 0;
  33
  34         AT91F_SpiInit();
  35
  36         for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
  37                 dataflash_info[i].id = 0;
  38                 dataflash_info[i].Device.pages_number = 0;
  39                 dfcode = AT91F_DataflashProbe (cs[i][1], &dataflash_info[i].Desc);
  40
  41                 switch (dfcode) {
  42                 case AT45DB161:
  43                         dataflash_info[i].Device.pages_number = 4096;
  44                         dataflash_info[i].Device.pages_size = 528;
  45                         dataflash_info[i].Device.page_offset = 10;
  46                         dataflash_info[i].Device.byte_mask = 0x300;
  47                         dataflash_info[i].Device.cs = cs[i][1];
  48                         dataflash_info[i].Desc.DataFlash_state = IDLE;
  49                         dataflash_info[i].logical_address = cs[i][0];
  50                         dataflash_info[i].id = dfcode;
  51                         Nb_device++;
  52                         break;
  53
  54                 case AT45DB321:
  55                         dataflash_info[i].Device.pages_number = 8192;
  56                         dataflash_info[i].Device.pages_size = 528;
  57                         dataflash_info[i].Device.page_offset = 10;
  58                         dataflash_info[i].Device.byte_mask = 0x300;
  59                         dataflash_info[i].Device.cs = cs[i][1];
  60                         dataflash_info[i].Desc.DataFlash_state = IDLE;
  61                         dataflash_info[i].logical_address = cs[i][0];
  62                         dataflash_info[i].id = dfcode;
  63                         Nb_device++;
  64                         break;
  65
  66                 case AT45DB642:
  67                         dataflash_info[i].Device.pages_number = 8192;
  68                         dataflash_info[i].Device.pages_size = 1056;
  69                         dataflash_info[i].Device.page_offset = 11;
  70                         dataflash_info[i].Device.byte_mask = 0x700;
  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                         Nb_device++;
  76                         break;
  77                 case AT45DB128:
  78                         dataflash_info[i].Device.pages_number = 16384;
  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                         Nb_device++;
  87                         break;
  88                 default:
  89                         break;
  90                 }
  91         }
  92         return (Nb_device);
  93 }
  94
  95
  96 void AT91F_DataflashPrintInfo(void)
  97 {
  98         int i;
  99         for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
 100                 if (dataflash_info[i].id != 0) {
 101                         printf ("DF:AT45DB");
 102                         switch (dataflash_info[i].id) {
 103                         case AT45DB161:
 104                                 printf ("161");
 105                                 break;
 106
 107                         case AT45DB321:
 108                                 printf ("321");
 109                                 break;
 110
 111                         case AT45DB642:
 112                                 printf ("642");
 113                                 break;
 114                         case AT45DB128:
 115                                 printf ("128");
 116                                 break;
 117                         }
 118
 119                         printf ("\n# PG: %6d\n"
 120                                 "PG SZ: %6d\n"
 121                                 "SZ=%8d bytes\n"
 122                                 "ADDR: %08X\n",
 123                                 (unsigned int) dataflash_info[i].Device.pages_number,
 124                                 (unsigned int) dataflash_info[i].Device.pages_size,
 125                                 (unsigned int) dataflash_info[i].Device.pages_number *
 126                                 dataflash_info[i].Device.pages_size,
 127                                 (unsigned int) dataflash_info[i].logical_address);
 128                 }
 129         }
 130 }
 131
 132
 133 /*------------------------------------------------------------------------------*/
 134 /* Function Name       : AT91F_DataflashSelect                                  */
 135 /* Object              : Select the correct device                              */
 136 /*------------------------------------------------------------------------------*/
 137 static AT91PS_DataFlash AT91F_DataflashSelect(AT91PS_DataFlash pFlash,
 138                                               unsigned int *addr)
 139 {
 140         char addr_valid = 0;
 141         int i;
 142
 143         for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++)
 144                 if ((*addr & 0xFF000000) == dataflash_info[i].logical_address) {
 145                         addr_valid = 1;
 146                         break;
 147                 }
 148         if (!addr_valid) {
 149                 pFlash = (AT91PS_DataFlash) 0;
 150                 return pFlash;
 151         }
 152         pFlash->pDataFlashDesc = &(dataflash_info[i].Desc);
 153         pFlash->pDevice = &(dataflash_info[i].Device);
 154         *addr -= dataflash_info[i].logical_address;
 155         return (pFlash);
 156 }
 157
 158
 159 /*------------------------------------------------------------------------------*/
 160 /* Function Name       : read_dataflash                                         */
 161 /* Object              : dataflash memory read                                  */
 162 /*------------------------------------------------------------------------------*/
 163 int read_dataflash(unsigned long addr, unsigned long size, char *result)
 164 {
 165         unsigned int AddrToRead = addr;
 166         AT91PS_DataFlash pFlash = &DataFlashInst;
 167
 168         pFlash = AT91F_DataflashSelect (pFlash, &AddrToRead);
 169         if (pFlash == 0)
 170                 return -1;
 171
 172         return (AT91F_DataFlashRead(pFlash, AddrToRead, size, result));
 173 }
 174
 175
 176 /*-----------------------------------------------------------------------------*/
 177 /* Function Name       : write_dataflash                                       */
 178 /* Object              : write a block in dataflash                            */
 179 /*-----------------------------------------------------------------------------*/
 180 int write_dataflash(unsigned long addr_dest, unsigned int addr_src,
 181                     unsigned int size)
 182 {
 183         unsigned int AddrToWrite = addr_dest;
 184         AT91PS_DataFlash pFlash = &DataFlashInst;
 185
 186         pFlash = AT91F_DataflashSelect(pFlash, &AddrToWrite);
 187         if (AddrToWrite == -1)
 188                 return -1;
 189
 190         return AT91F_DataFlashWrite(pFlash, (unsigned char *) addr_src, AddrToWrite, size);
 191 }
 192
 193 /*-----------------------------------------------------------------------------*/
 194 /* Function Name       : erase_dataflash                                       */
 195 /* Object              : Erase entire dataflash                                */
 196 /*-----------------------------------------------------------------------------*/
 197 int erase_dataflash(unsigned long addr_dest)
 198 {
 199         unsigned int AddrToWrite = addr_dest;
 200         AT91PS_DataFlash pFlash = &DataFlashInst;
 201
 202         pFlash = AT91F_DataflashSelect (pFlash, &AddrToWrite);
 203         if (AddrToWrite == -1)
 204                 return -1;
 205
 206         return AT91F_DataFlashErase(pFlash);
 207 }
 208