global_data.h 2.2 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. /* Architecture-specific global data */
  25. struct arch_global_data {
  26. };
  27. /*
  28. * The following data structure is placed in some memory wich is
  29. * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
  30. * some locked parts of the data cache) to allow for a minimum set of
  31. * global variables during system initialization (until we have set
  32. * up the memory controller so that we can use RAM).
  33. */
  34. typedef struct global_data {
  35. bd_t *bd;
  36. unsigned long flags;
  37. unsigned int baudrate;
  38. unsigned long stack_end; /* highest stack address */
  39. unsigned long have_console; /* serial_init() was called */
  40. #ifdef CONFIG_PRE_CONSOLE_BUFFER
  41. unsigned long precon_buf_idx; /* Pre-Console buffer index */
  42. #endif
  43. unsigned long reloc_off; /* Relocation Offset */
  44. unsigned long env_addr; /* Address of env struct */
  45. unsigned long env_valid; /* Checksum of env valid? */
  46. unsigned long cpu_hz; /* cpu core clock frequency */
  47. #if defined(CONFIG_LCD)
  48. void *fb_base; /* framebuffer address */
  49. #endif
  50. void **jt; /* jump table */
  51. char env_buf[32]; /* buffer for getenv() before reloc. */
  52. struct arch_global_data arch; /* architecture-specific data */
  53. } gd_t;
  54. #include <asm-generic/global_data_flags.h>
  55. #define DECLARE_GLOBAL_DATA_PTR register gd_t *gd asm("r5")
  56. #endif /* __ASM_GLOBAL_DATA_H__ */