src/flash/x7026.c

   1 /***************************************************************************
   2  *   Copyright (C) 2008 by Kevin McGuire                                   *
   3  *   Copyright (C) 2008 by Marcel Wijlaars                                 *
   4  *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include "config.h"
  24 #endif
  25
  26 #include "replacements.h"
  27
  28 #include "flash.h"
  29 #include "target.h"
  30 #include "log.h"
  31 #include "armv4_5.h"
  32 #include "algorithm.h"
  33 #include "binarybuffer.h"
  34
  35 #include <stdlib.h>
  36 #include <string.h>
  37 #include <unistd.h>
  38
  39 int x7026_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
  40 int x7026_register_commands(struct command_context_s *cmd_ctx);
  41 int x7026_erase(struct flash_bank_s *bank, int first, int last);
  42 int x7026_protect(struct flash_bank_s *bank, int set, int first, int last);
  43 int x7026_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count);
  44 int x7026_probe(struct flash_bank_s *bank);
  45 int x7026_info(struct flash_bank_s *bank, char *buf, int buf_size);
  46 int x7026_protect_check(struct flash_bank_s *bank);
  47 int x7026_erase_check(struct flash_bank_s *bank);
  48
  49 #define ADUC7026_FLASH                          0xfffff800
  50 #define ADUC7026_FLASH_FEESTA                   (0*4)
  51 #define ADUC7026_FLASH_FEEMOD                   (1*4)
  52 #define ADUC7026_FLASH_FEECON                   (2*4)
  53 #define ADUC7026_FLASH_FEEDAT                   (3*4)
  54 #define ADUC7026_FLASH_FEEADR                   (4*4)
  55 #define ADUC7026_FLASH_FEESIGN          (5*4)
  56 #define ADUC7026_FLASH_FEEPRO                   (6*4)
  57 #define ADUC7026_FLASH_FEEHIDE          (7*4)
  58
  59 typedef struct{
  60         uint32_t        feesta;
  61         uint32_t        feemod;
  62         uint32_t        feecon;
  63         uint32_t        feedat;
  64         uint32_t        feeadr;
  65         uint32_t        feesign;
  66         uint32_t        feepro;
  67         uint32_t        feehide;
  68 } ADUC7026_FLASH_MMIO;
  69
  70 typedef struct
  71 {
  72         unsigned char tmp;
  73 } X7026_BANK;
  74
  75 flash_driver_t x7026_flash =
  76 {
  77         .name = "x7026",
  78         .register_commands = x7026_register_commands,
  79         .flash_bank_command = x7026_flash_bank_command,
  80         .erase = x7026_erase,
  81         .protect = x7026_protect,
  82         .write = x7026_write,
  83         .probe = x7026_probe,
  84         .auto_probe = x7026_probe,
  85         .erase_check = x7026_erase_check,
  86         .protect_check = x7026_protect_check,
  87         .info = x7026_info
  88 };
  89
  90 int x7026_register_commands(struct command_context_s *cmd_ctx)
  91 {
  92         printf("x7026_register_commands not implemented yet.\n");
  93         return ERROR_OK;
  94 }
  95
  96 /* flash bank str7x <base> <size> 0 0 <target#>  */
  97 int x7026_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
  98 {
  99         X7026_BANK      *nbank;
 100
 101         if (argc < 6)
 102         {
 103                 LOG_WARNING("incomplete flash_bank x7026 configuration");
 104                 return ERROR_FLASH_BANK_INVALID;
 105         }
 106
 107         nbank = malloc(sizeof(X7026_BANK));
 108         /* just warn that we are used to normally using 0x80000 */
 109         if(bank->base != 0x80000)
 110         {
 111                 LOG_WARNING("Default base address is 0x80000 on the ADuC7026!");
 112         }
 113         nbank->tmp = 1;
 114         bank->driver_priv = nbank;
 115         return ERROR_OK;
 116 }
 117
 118 int x7026_protect_check(struct flash_bank_s *bank)
 119 {
 120         printf("x7026_protect_check not implemented yet.\n");
 121         return ERROR_OK;
 122 }
 123
 124 int x7026_erase(struct flash_bank_s *bank, int first, int last)
 125 {
 126         unsigned int    x;
 127         int                     count;
 128         u32                     v;
 129         target_t *target = bank->target;
 130
 131         /* mass erase */
 132         if((first | last) == 0)
 133         {
 134                 printf("performing mass erase.\n");
 135                 target_write_u32(target, ADUC7026_FLASH + ADUC7026_FLASH_FEEDAT, 0x3cff);
 136                 target_write_u32(target, ADUC7026_FLASH + ADUC7026_FLASH_FEEADR, 0xffc3);
 137                 target_read_u32(target, ADUC7026_FLASH + ADUC7026_FLASH_FEEMOD, &v);
 138                 target_write_u32(target, ADUC7026_FLASH + ADUC7026_FLASH_FEEMOD, v | 0x8);
 139                 target_write_u32(target, ADUC7026_FLASH + ADUC7026_FLASH_FEECON, 0x06);
 140                 for(v = 0x4; v & 0x4;
 141                         target_read_u32(target, ADUC7026_FLASH + ADUC7026_FLASH_FEESTA, &v));
 142
 143                 if(!(v & 0x1))
 144                 {
 145                         printf("mass erase failed.\n");
 146                         return -1;
 147                 }
 148                 printf("mass erase successful.\n");
 149                 return ERROR_OK;
 150         }
 151
 152         count = last - first;
 153         for(x = 0; x < (unsigned int)count; ++x)
 154         {
 155                 target_write_u32(target, ADUC7026_FLASH + ADUC7026_FLASH_FEEADR, bank->base + first * 512 + x * 512);
 156                 target_write_u32(target, ADUC7026_FLASH + ADUC7026_FLASH_FEECON, 0x05);
 157                 for(v = 0x4; v & 0x4; target_read_u32(target, ADUC7026_FLASH + ADUC7026_FLASH_FEESTA, &v));
 158                 if(!(v & 0x1))
 159                 {
 160                         printf("erase failed for page address %x\n", bank->base + first * 512 + x * 512);
 161                         return -1;
 162                 }
 163                 printf("erased page address %x\n", bank->base + first * 512 + x * 512);
 164         }
 165         return ERROR_OK;
 166 }
 167
 168 int x7026_protect(struct flash_bank_s *bank, int set, int first, int last)
 169 {
 170         printf("x7026_protect not implemented yet.\n");
 171         return -1;
 172 }
 173
 174 int x7026_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
 175 {
 176         unsigned int    x;
 177         u32                     v;
 178         target_t                *target = bank->target;
 179         for(x = 0; x < count; x += 2)
 180         {
 181                 target_write_u32(target, ADUC7026_FLASH + ADUC7026_FLASH_FEEADR, offset + x);
 182                 /* if we able to encounter a single byte instead of a word */
 183                 if((x + 1) == count)
 184                 {
 185                         target_write_u32(target, ADUC7026_FLASH + ADUC7026_FLASH_FEEDAT, buffer[x]);
 186                 }else{
 187                         target_write_u32(target, ADUC7026_FLASH + ADUC7026_FLASH_FEEDAT, buffer[x] | (buffer[x+1] << 8));
 188                 }
 189                 target_write_u32(target, ADUC7026_FLASH + ADUC7026_FLASH_FEECON, 0x02);
 190                 for(v = 0x4; v & 0x4; target_read_u32(target, ADUC7026_FLASH + ADUC7026_FLASH_FEESTA, &v));
 191                 if(!(v & 0x1))
 192                 {
 193                         printf("single write failed for address %x.\n", offset + x);
 194                         return -1;
 195                 }
 196                 printf("single write for address %x.\n", offset + x);
 197         }
 198         return ERROR_OK;
 199 }
 200
 201 int x7026_probe(struct flash_bank_s *bank)
 202 {
 203         printf("x7026_probe not implemented yet.\n");
 204         return ERROR_OK;
 205 }
 206
 207 int x7026_info(struct flash_bank_s *bank, char *buf, int buf_size)
 208 {
 209         snprintf(buf, buf_size, "x7026 flash driver info" );
 210         return -1;
 211 }
 212
 213 int x7026_erase_check(struct flash_bank_s *bank)
 214 {
 215         printf("x7026_erase_check not implemented yet.\n");
 216         return -1;
 217 }