board/prodrive/pdnb3/flash.c

   1 /*
   2  * (C) Copyright 2006
   3  * Stefan Roese, DENX Software Engineering, sr@denx.de.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <asm/arch/ixp425.h>
  10
  11 #if !defined(CONFIG_FLASH_CFI_DRIVER)
  12
  13 /*
  14  * include common flash code (for esd boards)
  15  */
  16 #include "../common/flash.c"
  17
  18 /*
  19  * Prototypes
  20  */
  21 static ulong flash_get_size (vu_long * addr, flash_info_t * info);
  22
  23 static inline ulong ld(ulong x)
  24 {
  25         ulong k = 0;
  26
  27         while (x >>= 1)
  28                 ++k;
  29
  30         return k;
  31 }
  32
  33 unsigned long flash_init(void)
  34 {
  35         unsigned long size;
  36         int i;
  37
  38         /* Init: no FLASHes known */
  39         for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; i++)
  40                 flash_info[i].flash_id = FLASH_UNKNOWN;
  41
  42         size = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
  43
  44         if (flash_info[0].flash_id == FLASH_UNKNOWN)
  45                 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
  46                         size, size<<20);
  47
  48         /* Reconfigure CS0 to actual FLASH size */
  49         *IXP425_EXP_CS0 = (*IXP425_EXP_CS0 & ~0x00003C00) | ((ld(size) - 9) << 10);
  50
  51         /* Monitor protection ON by default */
  52         flash_protect(FLAG_PROTECT_SET,
  53                       CONFIG_SYS_MONITOR_BASE, CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
  54                       &flash_info[CONFIG_SYS_MAX_FLASH_BANKS - 1]);
  55
  56         /* Environment protection ON by default */
  57         flash_protect(FLAG_PROTECT_SET,
  58                       CONFIG_ENV_ADDR,
  59                       CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
  60                       &flash_info[CONFIG_SYS_MAX_FLASH_BANKS - 1]);
  61
  62         /* Redundant environment protection ON by default */
  63         flash_protect(FLAG_PROTECT_SET,
  64                       CONFIG_ENV_ADDR_REDUND,
  65                       CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
  66                       &flash_info[CONFIG_SYS_MAX_FLASH_BANKS - 1]);
  67
  68         flash_info[0].size = size;
  69
  70         return size;
  71 }
  72
  73 #endif /* CONFIG_FLASH_CFI_DRIVER */