packages/devs/flash/arm/integrator/v2_0/src/arm_integrator_flash.c

   1 //==========================================================================
   2 //
   3 //      arm_integrator_flash.c
   4 //
   5 //      Flash programming for Intel FlashFile devices on ARM Integrator board
   6 //
   7 //==========================================================================
   8 //####ECOSGPLCOPYRIGHTBEGIN####
   9 // -------------------------------------------
  10 // This file is part of eCos, the Embedded Configurable Operating System.
  11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
  12 //
  13 // eCos is free software; you can redistribute it and/or modify it under
  14 // the terms of the GNU General Public License as published by the Free
  15 // Software Foundation; either version 2 or (at your option) any later version.
  16 //
  17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
  18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
  19 // FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  20 // for more details.
  21 //
  22 // You should have received a copy of the GNU General Public License along
  23 // with eCos; if not, write to the Free Software Foundation, Inc.,
  24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  25 //
  26 // As a special exception, if other files instantiate templates or use macros
  27 // or inline functions from this file, or you compile this file and link it
  28 // with other works to produce a work based on this file, this file does not
  29 // by itself cause the resulting work to be covered by the GNU General Public
  30 // License. However the source code for this file must still be made available
  31 // in accordance with section (3) of the GNU General Public License.
  32 //
  33 // This exception does not invalidate any other reasons why a work based on
  34 // this file might be covered by the GNU General Public License.
  35 //
  36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
  37 // at http://sources.redhat.com/ecos/ecos-license/
  38 // -------------------------------------------
  39 //####ECOSGPLCOPYRIGHTEND####
  40 //==========================================================================
  41 //#####DESCRIPTIONBEGIN####
  42 //
  43 // Author(s):    jskov
  44 // Contributors: jskov
  45 // Date:         2001-08-07
  46 // Purpose:
  47 // Description:
  48 //
  49 //####DESCRIPTIONEND####
  50 //
  51 //==========================================================================
  52
  53 //--------------------------------------------------------------------------
  54 // Device properties
  55
  56 // We use the eight Intel 28F320S3 parts on the Integrator board.
  57 // These are arranged in a 2x4 grid, giving 32 bits wide by 32MB long.
  58
  59 #define CYGNUM_FLASH_INTERLEAVE (2)
  60 #define CYGNUM_FLASH_SERIES     (4)
  61 #define CYGNUM_FLASH_WIDTH      (16)
  62 #define CYGNUM_FLASH_BASE       (0x24000000)
  63
  64 //--------------------------------------------------------------------------
  65 // Platform specific extras
  66
  67 #define CYGHWR_FLASH_WRITE_ENABLE()                                                             \
  68         {                                                                                       \
  69                 volatile cyg_uint32 *ebi_csr1 = (volatile cyg_uint32 *)INTEGRATOR_EBI_CSR1;     \
  70                                                                                                 \
  71                 /* allow write access to EBI_CSR1 area (Flash) */                               \
  72                 *ebi_csr1 |= INTEGRATOR_EBI_WRITE_ENABLE;                                       \
  73                                                                                                 \
  74                 if (!(*ebi_csr1 & INTEGRATOR_EBI_WRITE_ENABLE)) {                               \
  75                     *(volatile cyg_uint32 *)INTEGRATOR_EBI_LOCK = 0xA05F;                       \
  76                     *ebi_csr1 |= INTEGRATOR_EBI_WRITE_ENABLE;                                   \
  77                     *(volatile cyg_uint32 *)INTEGRATOR_EBI_LOCK = 0;                            \
  78                 }                                                                               \
  79                                                                                                 \
  80                 /* Enable Vpp and allow write access to Flash in system controller */           \
  81                 *(volatile unsigned int *)INTEGRATOR_SC_CTRLS = FL_SC_CONTROL;                  \
  82         }
  83
  84 #define CYGHWR_FLASH_WRITE_DISABLE()                                                            \
  85         {                                                                                       \
  86                 volatile cyg_uint32 *ebi_csr1 = (volatile cyg_uint32 *)INTEGRATOR_EBI_CSR1;     \
  87                                                                                                 \
  88                 /* disable write access to EBI_CSR1 area (Flash) */                             \
  89                 *ebi_csr1 &= ~INTEGRATOR_EBI_WRITE_ENABLE;                                      \
  90                                                                                                 \
  91                 if (*ebi_csr1 & INTEGRATOR_EBI_WRITE_ENABLE) {                                  \
  92                     *(volatile cyg_uint32 *)INTEGRATOR_EBI_LOCK = 0xA05F;                       \
  93                     *ebi_csr1 &= ~INTEGRATOR_EBI_WRITE_ENABLE;                                  \
  94                     *(volatile cyg_uint32 *)INTEGRATOR_EBI_LOCK = 1;                            \
  95                 }                                                                               \
  96                                                                                                 \
  97                 /* Disable Vpp and disable write access to Flash in system controller */        \
  98                 *(volatile unsigned int *)INTEGRATOR_SC_CTRLS = 0;                              \
  99         }
 100
 101 //--------------------------------------------------------------------------
 102 // Now include the driver code.
 103 #include "cyg/io/flash_28fxxx.inl"
 104
 105 // ------------------------------------------------------------------------
 106 // EOF arm_integrator_flash.c