board/amcc/luan/flash.c

   1 /*
   2  * (C) Copyright 2002
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * (C) Copyright 2002 Jun Gu <jung@artesyncp.com>
   6  * Add support for Am29F016D and dynamic switch setting.
   7  *
   8  * SPDX-License-Identifier:     GPL-2.0+
   9  */
  10
  11 /*
  12  * Modified 4/5/2001
  13  * Wait for completion of each sector erase command issued
  14  * 4/5/2001
  15  * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
  16  */
  17
  18 #include <common.h>
  19 #include <asm/ppc4xx.h>
  20 #include <asm/processor.h>
  21
  22 #undef DEBUG
  23 #ifdef DEBUG
  24 #define DEBUGF(x...) printf(x)
  25 #else
  26 #define DEBUGF(x...)
  27 #endif                          /* DEBUG */
  28
  29 static unsigned long flash_addr_table[1][CONFIG_SYS_MAX_FLASH_BANKS] = {
  30         {0xff900000, 0xff980000, 0xffc00000},   /* 0:000: configuraton 3 */
  31 };
  32
  33 /*
  34  * include common flash code (for amcc boards)
  35  */
  36 #include "../common/flash.c"
  37
  38 /*-----------------------------------------------------------------------
  39  * Functions
  40  */
  41 static ulong flash_get_size(vu_long * addr, flash_info_t * info);
  42
  43 unsigned long flash_init(void)
  44 {
  45         unsigned long total_b = 0;
  46         unsigned long size_b[CONFIG_SYS_MAX_FLASH_BANKS];
  47         unsigned short index = 0;
  48         int i;
  49
  50         /* read FPGA base register FPGA_REG0 */
  51
  52         DEBUGF("\n");
  53         DEBUGF("FLASH: Index: %d\n", index);
  54
  55         /* Init: no FLASHes known */
  56         for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
  57                 flash_info[i].flash_id = FLASH_UNKNOWN;
  58                 flash_info[i].sector_count = -1;
  59                 flash_info[i].size = 0;
  60
  61                 /* check whether the address is 0 */
  62                 if (flash_addr_table[index][i] == 0) {
  63                         continue;
  64                 }
  65
  66                 /* call flash_get_size() to initialize sector address */
  67                 size_b[i] = flash_get_size((vu_long *)
  68                                            flash_addr_table[index][i],
  69                                            &flash_info[i]);
  70                 flash_info[i].size = size_b[i];
  71                 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
  72                         printf("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
  73                                i, size_b[i], size_b[i] << 20);
  74                         flash_info[i].sector_count = -1;
  75                         flash_info[i].size = 0;
  76                 }
  77
  78                 /* Monitor protection ON by default */
  79                 (void)flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_MONITOR_BASE,
  80                                     CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN - 1,
  81                                     &flash_info[2]);
  82 #ifdef CONFIG_ENV_IS_IN_FLASH
  83                 (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR,
  84                                     CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
  85                                     &flash_info[2]);
  86                 (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR_REDUND,
  87                                     CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
  88                                     &flash_info[2]);
  89 #endif
  90
  91                 total_b += flash_info[i].size;
  92         }
  93
  94         return total_b;
  95 }