global_data.h 2.0 KB

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  1. /*
  2. * Copyright (c) 2011 The Chromium OS Authors.
  3. *
  4. * (C) Copyright 2002-2010
  5. * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  6. *
  7. * See file CREDITS for list of people who contributed to this
  8. * project.
  9. *
  10. * This program is free software; you can redistribute it and/or
  11. * modify it under the terms of the GNU General Public License as
  12. * published by the Free Software Foundation; either version 2 of
  13. * the License, or (at your option) any later version.
  14. *
  15. * This program is distributed in the hope that it will be useful,
  16. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18. * GNU General Public License for more details.
  19. *
  20. * You should have received a copy of the GNU General Public License
  21. * along with this program; if not, write to the Free Software
  22. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23. * MA 02111-1307 USA
  24. */
  25. #ifndef __ASM_GBL_DATA_H
  26. #define __ASM_GBL_DATA_H
  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 long baudrate;
  38. unsigned long have_console; /* serial_init() was called */
  39. unsigned long env_addr; /* Address of Environment struct */
  40. unsigned long env_valid; /* Checksum of Environment valid? */
  41. unsigned long fb_base; /* base address of frame buffer */
  42. u8 *ram_buf; /* emulated RAM buffer */
  43. phys_size_t ram_size; /* RAM size */
  44. const void *fdt_blob; /* Our device tree, NULL if none */
  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 extern gd_t *gd
  50. #endif /* __ASM_GBL_DATA_H */