global_data.h 2.4 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. /* Architecture-specific global data */
  31. struct arch_global_data {
  32. };
  33. /*
  34. * The following data structure is placed in some memory wich is
  35. * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
  36. * some locked parts of the data cache) to allow for a minimum set of
  37. * global variables during system initialization (until we have set
  38. * up the memory controller so that we can use RAM).
  39. */
  40. typedef struct global_data {
  41. bd_t *bd;
  42. unsigned long flags;
  43. unsigned long board_type;
  44. unsigned int baudrate;
  45. unsigned long have_console; /* serial_init() was called */
  46. #ifdef CONFIG_PRE_CONSOLE_BUFFER
  47. unsigned long precon_buf_idx; /* Pre-Console buffer index */
  48. #endif
  49. phys_size_t ram_size; /* RAM size */
  50. unsigned long env_addr; /* Address of Environment struct */
  51. unsigned long env_valid; /* Checksum of Environment valid? */
  52. #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
  53. unsigned long post_log_word; /* Record POST activities */
  54. unsigned long post_log_res; /* success of POST test */
  55. unsigned long post_init_f_time; /* When post_init_f started */
  56. #endif
  57. void **jt; /* jump table */
  58. char env_buf[32]; /* buffer for getenv() before reloc. */
  59. struct arch_global_data arch; /* architecture-specific data */
  60. } gd_t;
  61. #include <asm-generic/global_data_flags.h>
  62. #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("P3")
  63. #endif