board/esd/adciop/flash.c

   1 /*
   2  * (C) Copyright 2001
   3  * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <asm/ppc4xx.h>
  10 #include <asm/processor.h>
  11
  12 /*
  13  * include common flash code (for esd boards)
  14  */
  15 #include "../common/flash.c"
  16
  17 /*-----------------------------------------------------------------------
  18  * Functions
  19  */
  20 static ulong flash_get_size (vu_long *addr, flash_info_t *info);
  21 static void flash_get_offsets (ulong base, flash_info_t *info);
  22
  23 /*-----------------------------------------------------------------------
  24  */
  25
  26 unsigned long flash_init (void)
  27 {
  28         unsigned long size_b0, size_b1;
  29         int i;
  30
  31         /* Init: no FLASHes known */
  32         for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
  33                 flash_info[i].flash_id = FLASH_UNKNOWN;
  34         }
  35
  36         size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
  37
  38         if (flash_info[0].flash_id == FLASH_UNKNOWN) {
  39                 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
  40                         size_b0, size_b0<<20);
  41         }
  42
  43         size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]);
  44
  45         if (size_b1 > size_b0) {
  46                 printf ("## ERROR: "
  47                         "Bank 1 (0x%08lx = %ld MB) > Bank 0 (0x%08lx = %ld MB)\n",
  48                         size_b1, size_b1<<20,
  49                         size_b0, size_b0<<20
  50                 );
  51                 flash_info[0].flash_id  = FLASH_UNKNOWN;
  52                 flash_info[1].flash_id  = FLASH_UNKNOWN;
  53                 flash_info[0].sector_count      = -1;
  54                 flash_info[1].sector_count      = -1;
  55                 flash_info[0].size              = 0;
  56                 flash_info[1].size              = 0;
  57                 return (0);
  58         }
  59
  60         /* Re-do sizing to get full correct info */
  61         size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
  62
  63         flash_get_offsets (FLASH_BASE0_PRELIM, &flash_info[0]);
  64
  65         /* monitor protection ON by default */
  66         flash_protect(FLAG_PROTECT_SET,
  67                       FLASH_BASE0_PRELIM+size_b0-monitor_flash_len,
  68                       FLASH_BASE0_PRELIM+size_b0-1,
  69                       &flash_info[0]);
  70
  71         if (size_b1) {
  72                 /* Re-do sizing to get full correct info */
  73                 size_b1 = flash_get_size((vu_long *)(FLASH_BASE0_PRELIM + size_b0),
  74                                           &flash_info[1]);
  75
  76                 flash_get_offsets (FLASH_BASE0_PRELIM + size_b0, &flash_info[1]);
  77
  78                 /* monitor protection ON by default */
  79                 flash_protect(FLAG_PROTECT_SET,
  80                               FLASH_BASE0_PRELIM+size_b0+size_b1-monitor_flash_len,
  81                               FLASH_BASE0_PRELIM+size_b0+size_b1-1,
  82                               &flash_info[1]);
  83                 /* monitor protection OFF by default (one is enough) */
  84                 flash_protect(FLAG_PROTECT_CLEAR,
  85                               FLASH_BASE0_PRELIM+size_b0-monitor_flash_len,
  86                               FLASH_BASE0_PRELIM+size_b0-1,
  87                               &flash_info[0]);
  88         } else {
  89                 flash_info[1].flash_id = FLASH_UNKNOWN;
  90                 flash_info[1].sector_count = -1;
  91         }
  92
  93         flash_info[0].size = size_b0;
  94         flash_info[1].size = size_b1;
  95
  96         return (size_b0 + size_b1);
  97 }