global_data.h 2.5 KB

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  1. /*
  2. * Copyright (C) 2004-2006 Atmel Corporation
  3. *
  4. * See file CREDITS for list of people who contributed to this
  5. * project.
  6. *
  7. * This program is free software; you can redistribute it and/or
  8. * modify it under the terms of the GNU General Public License as
  9. * published by the Free Software Foundation; either version 2 of
  10. * the License, or (at your option) any later version.
  11. *
  12. * This program is distributed in the hope that it will be useful,
  13. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15. * GNU General Public License for more details.
  16. *
  17. * You should have received a copy of the GNU General Public License
  18. * along with this program; if not, write to the Free Software
  19. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  20. * MA 02111-1307 USA
  21. */
  22. #ifndef __ASM_GLOBAL_DATA_H__
  23. #define __ASM_GLOBAL_DATA_H__
  24. /*
  25. * The following data structure is placed in some memory wich is
  26. * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
  27. * some locked parts of the data cache) to allow for a minimum set of
  28. * global variables during system initialization (until we have set
  29. * up the memory controller so that we can use RAM).
  30. *
  31. * Keep it *SMALL* and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t)
  32. */
  33. typedef struct global_data {
  34. bd_t *bd;
  35. unsigned long flags;
  36. unsigned long baudrate;
  37. unsigned long stack_end; /* highest stack address */
  38. unsigned long have_console; /* serial_init() was called */
  39. unsigned long reloc_off; /* Relocation Offset */
  40. unsigned long env_addr; /* Address of env struct */
  41. unsigned long env_valid; /* Checksum of env valid? */
  42. unsigned long cpu_hz; /* cpu core clock frequency */
  43. #if defined(CONFIG_LCD)
  44. void *fb_base; /* framebuffer address */
  45. #endif
  46. void **jt; /* jump table */
  47. char env_buf[32]; /* buffer for getenv() before reloc. */
  48. } gd_t;
  49. /*
  50. * Global Data Flags
  51. */
  52. #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */
  53. #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */
  54. #define GD_FLG_SILENT 0x00004 /* Silent mode */
  55. #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */
  56. #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */
  57. #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */
  58. #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */
  59. #define GD_FLG_ENV_READY 0x00080 /* Environment imported into hash table */
  60. #define DECLARE_GLOBAL_DATA_PTR register gd_t *gd asm("r5")
  61. #endif /* __ASM_GLOBAL_DATA_H__ */