global_data.h 2.0 KB

12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455
  1. /*
  2. * (C) Copyright 2004 Atmark Techno, Inc.
  3. *
  4. * Yasushi SHOJI <yashi@atmark-techno.com>
  5. *
  6. * See file CREDITS for list of people who contributed to this
  7. * project.
  8. *
  9. * This program is free software; you can redistribute it and/or
  10. * modify it under the terms of the GNU General Public License as
  11. * published by the Free Software Foundation; either version 2 of
  12. * the License, or (at your option) any later version.
  13. *
  14. * This program is distributed in the hope that it will be useful,
  15. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17. * GNU General Public License for more details.
  18. *
  19. * You should have received a copy of the GNU General Public License
  20. * along with this program; if not, write to the Free Software
  21. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  22. * MA 02111-1307 USA
  23. */
  24. #ifndef __ASM_GBL_DATA_H
  25. #define __ASM_GBL_DATA_H
  26. /*
  27. * The following data structure is placed in some memory wich is
  28. * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
  29. * some locked parts of the data cache) to allow for a minimum set of
  30. * global variables during system initialization (until we have set
  31. * up the memory controller so that we can use RAM).
  32. */
  33. typedef struct global_data {
  34. bd_t *bd;
  35. unsigned long flags;
  36. unsigned int baudrate;
  37. unsigned long have_console; /* serial_init() was called */
  38. #ifdef CONFIG_PRE_CONSOLE_BUFFER
  39. unsigned long precon_buf_idx; /* Pre-Console buffer index */
  40. #endif
  41. unsigned long env_addr; /* Address of Environment struct */
  42. const void *fdt_blob; /* Our device tree, NULL if none */
  43. unsigned long env_valid; /* Checksum of Environment valid? */
  44. unsigned long fb_base; /* base address of frame buffer */
  45. void **jt; /* jump table */
  46. char env_buf[32]; /* buffer for getenv() before reloc. */
  47. } gd_t;
  48. #include <asm-generic/global_data_flags.h>
  49. #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("r31")
  50. #endif /* __ASM_GBL_DATA_H */