flash.c 4.3 KB

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  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. * See file CREDITS for list of people who contributed to this
  9. * project.
  10. *
  11. * This program is free software; you can redistribute it and/or
  12. * modify it under the terms of the GNU General Public License as
  13. * published by the Free Software Foundation; either version 2 of
  14. * the License, or (at your option) any later version.
  15. *
  16. * This program is distributed in the hope that it will be useful,
  17. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  19. * GNU General Public License for more details.
  20. *
  21. * You should have received a copy of the GNU General Public License
  22. * along with this program; if not, write to the Free Software
  23. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  24. * MA 02111-1307 USA
  25. */
  26. /*
  27. * Modified 4/5/2001
  28. * Wait for completion of each sector erase command issued
  29. * 4/5/2001
  30. * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
  31. */
  32. #include <common.h>
  33. #include <ppc4xx.h>
  34. #include <asm/processor.h>
  35. #undef DEBUG
  36. #ifdef DEBUG
  37. #define DEBUGF(x...) printf(x)
  38. #else
  39. #define DEBUGF(x...)
  40. #endif /* DEBUG */
  41. #define BOOT_SMALL_FLASH 32 /* 00100000 */
  42. #define FLASH_ONBD_N 2 /* 00000010 */
  43. #define FLASH_SRAM_SEL 1 /* 00000001 */
  44. #define BOOT_SMALL_FLASH_VAL 4
  45. #define FLASH_ONBD_N_VAL 2
  46. #define FLASH_SRAM_SEL_VAL 1
  47. static unsigned long flash_addr_table[8][CONFIG_SYS_MAX_FLASH_BANKS] = {
  48. {0xffc00000, 0xffe00000, 0xff880000}, /* 0:000: configuraton 3 */
  49. {0xffc00000, 0xffe00000, 0xff800000}, /* 1:001: configuraton 4 */
  50. {0xffc00000, 0xffe00000, 0x00000000}, /* 2:010: configuraton 7 */
  51. {0xffc00000, 0xffe00000, 0x00000000}, /* 3:011: configuraton 8 */
  52. {0xff800000, 0xffa00000, 0xfff80000}, /* 4:100: configuraton 1 */
  53. {0xff800000, 0xffa00000, 0xfff00000}, /* 5:101: configuraton 2 */
  54. {0xffc00000, 0xffe00000, 0x00000000}, /* 6:110: configuraton 5 */
  55. {0xffc00000, 0xffe00000, 0x00000000} /* 7:111: configuraton 6 */
  56. };
  57. /*
  58. * include common flash code (for amcc boards)
  59. */
  60. #include "../common/flash.c"
  61. /*-----------------------------------------------------------------------
  62. * Functions
  63. */
  64. static ulong flash_get_size(vu_long * addr, flash_info_t * info);
  65. unsigned long flash_init(void)
  66. {
  67. unsigned long total_b = 0;
  68. unsigned long size_b[CONFIG_SYS_MAX_FLASH_BANKS];
  69. unsigned char *fpga_base = (unsigned char *)CONFIG_SYS_FPGA_BASE;
  70. unsigned char switch_status;
  71. unsigned short index = 0;
  72. int i;
  73. /* read FPGA base register FPGA_REG0 */
  74. switch_status = *fpga_base;
  75. /* check the bitmap of switch status */
  76. if (switch_status & BOOT_SMALL_FLASH) {
  77. index += BOOT_SMALL_FLASH_VAL;
  78. }
  79. if (switch_status & FLASH_ONBD_N) {
  80. index += FLASH_ONBD_N_VAL;
  81. }
  82. if (switch_status & FLASH_SRAM_SEL) {
  83. index += FLASH_SRAM_SEL_VAL;
  84. }
  85. DEBUGF("\n");
  86. DEBUGF("FLASH: Index: %d\n", index);
  87. /* Init: no FLASHes known */
  88. for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
  89. flash_info[i].flash_id = FLASH_UNKNOWN;
  90. flash_info[i].sector_count = -1;
  91. flash_info[i].size = 0;
  92. /* check whether the address is 0 */
  93. if (flash_addr_table[index][i] == 0) {
  94. continue;
  95. }
  96. /* call flash_get_size() to initialize sector address */
  97. size_b[i] = flash_get_size((vu_long *)
  98. flash_addr_table[index][i],
  99. &flash_info[i]);
  100. flash_info[i].size = size_b[i];
  101. if (flash_info[i].flash_id == FLASH_UNKNOWN) {
  102. printf("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
  103. i, size_b[i], size_b[i] << 20);
  104. flash_info[i].sector_count = -1;
  105. flash_info[i].size = 0;
  106. }
  107. /* Monitor protection ON by default */
  108. (void)flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_MONITOR_BASE,
  109. CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN - 1,
  110. &flash_info[2]);
  111. #ifdef CONFIG_ENV_IS_IN_FLASH
  112. (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR,
  113. CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
  114. &flash_info[2]);
  115. (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR_REDUND,
  116. CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
  117. &flash_info[2]);
  118. #endif
  119. total_b += flash_info[i].size;
  120. }
  121. return total_b;
  122. }