global_data.h 2.8 KB

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  1. /*
  2. * (C) Copyright 2002-2010
  3. * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  4. *
  5. * (C) Copyright 2007
  6. * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com.
  7. *
  8. * See file CREDITS for list of people who contributed to this
  9. * project.
  10. *
  11. * This program is free software; you can redistribute it and/or
  12. * modify it under the terms of the GNU General Public License as
  13. * published by the Free Software Foundation; either version 2 of
  14. * the License, or (at your option) any later version.
  15. *
  16. * This program is distributed in the hope that it will be useful,
  17. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  19. * GNU General Public License for more details.
  20. *
  21. * You should have received a copy of the GNU General Public License
  22. * along with this program; if not, write to the Free Software
  23. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  24. * MA 02111-1307 USA
  25. */
  26. #ifndef __ASM_GBL_DATA_H
  27. #define __ASM_GBL_DATA_H
  28. #include "asm/types.h"
  29. /*
  30. * The following data structure is placed in some memory wich is
  31. * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
  32. * some locked parts of the data cache) to allow for a minimum set of
  33. * global variables during system initialization (until we have set
  34. * up the memory controller so that we can use RAM).
  35. */
  36. typedef struct global_data {
  37. bd_t *bd;
  38. unsigned long flags;
  39. unsigned int baudrate;
  40. unsigned long cpu_clk; /* CPU clock in Hz! */
  41. unsigned long bus_clk;
  42. phys_size_t ram_size; /* RAM size */
  43. unsigned long reloc_off; /* Relocation Offset */
  44. unsigned long reset_status; /* reset status register at boot */
  45. unsigned long env_addr; /* Address of Environment struct */
  46. unsigned long env_valid; /* Checksum of Environment valid? */
  47. unsigned long have_console; /* serial_init() was called */
  48. #ifdef CONFIG_PRE_CONSOLE_BUFFER
  49. unsigned long precon_buf_idx; /* Pre-Console buffer index */
  50. #endif
  51. #if defined(CONFIG_LCD) || defined(CONFIG_VIDEO)
  52. unsigned long fb_base; /* Base address of framebuffer memory */
  53. #endif
  54. #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
  55. unsigned long post_log_word; /* Record POST activities */
  56. unsigned long post_log_res; /* success of POST test */
  57. unsigned long post_init_f_time; /* When post_init_f started */
  58. #endif
  59. #ifdef CONFIG_BOARD_TYPES
  60. unsigned long board_type;
  61. #endif
  62. #ifdef CONFIG_MODEM_SUPPORT
  63. unsigned long do_mdm_init;
  64. unsigned long be_quiet;
  65. #endif
  66. #ifdef CONFIG_LWMON
  67. unsigned long kbd_status;
  68. #endif
  69. void **jt; /* jump table */
  70. char env_buf[32]; /* buffer for getenv() before reloc. */
  71. } gd_t;
  72. #include <asm-generic/global_data_flags.h>
  73. #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("%g7")
  74. #endif /* __ASM_GBL_DATA_H */