global_data.h 2.7 KB

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  1. /*
  2. * U-boot - global_data.h Declarations for global data of u-boot
  3. *
  4. * Copyright (c) 2005-2007 Analog Devices Inc.
  5. *
  6. * (C) Copyright 2000-2010
  7. * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  8. *
  9. * See file CREDITS for list of people who contributed to this
  10. * project.
  11. *
  12. * This program is free software; you can redistribute it and/or
  13. * modify it under the terms of the GNU General Public License as
  14. * published by the Free Software Foundation; either version 2 of
  15. * the License, or (at your option) any later version.
  16. *
  17. * This program is distributed in the hope that it will be useful,
  18. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  20. * GNU General Public License for more details.
  21. *
  22. * You should have received a copy of the GNU General Public License
  23. * along with this program; if not, write to the Free Software
  24. * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
  25. * MA 02110-1301 USA
  26. */
  27. #ifndef __ASM_GBL_DATA_H
  28. #define __ASM_GBL_DATA_H
  29. #include <asm/u-boot.h>
  30. /*
  31. * The following data structure is placed in some memory wich is
  32. * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
  33. * some locked parts of the data cache) to allow for a minimum set of
  34. * global variables during system initialization (until we have set
  35. * up the memory controller so that we can use RAM).
  36. *
  37. * Keep it *SMALL* and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t)
  38. */
  39. typedef struct global_data {
  40. bd_t *bd;
  41. unsigned long flags;
  42. unsigned long board_type;
  43. unsigned long baudrate;
  44. unsigned long have_console; /* serial_init() was called */
  45. phys_size_t ram_size; /* RAM size */
  46. unsigned long env_addr; /* Address of Environment struct */
  47. unsigned long env_valid; /* Checksum of Environment valid? */
  48. #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
  49. unsigned long post_log_word; /* Record POST activities */
  50. unsigned long post_init_f_time; /* When post_init_f started */
  51. #endif
  52. void **jt; /* jump table */
  53. char env_buf[32]; /* buffer for getenv() before reloc. */
  54. } gd_t;
  55. /*
  56. * Global Data Flags
  57. */
  58. #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */
  59. #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */
  60. #define GD_FLG_SILENT 0x00004 /* Silent mode */
  61. #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */
  62. #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */
  63. #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */
  64. #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */
  65. #define GD_FLG_ENV_READY 0x00080 /* Environment imported into hash table */
  66. #define DECLARE_GLOBAL_DATA_PTR register gd_t * volatile gd asm ("P3")
  67. #endif