global_data.h 3.1 KB

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  1. /*
  2. * (C) Copyright 2002 - 2010
  3. * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  4. *
  5. * See file CREDITS for list of people who contributed to this
  6. * project.
  7. *
  8. * This program is free software; you can redistribute it and/or
  9. * modify it under the terms of the GNU General Public License as
  10. * published by the Free Software Foundation; either version 2 of
  11. * the License, or (at your option) any later version.
  12. *
  13. * This program is distributed in the hope that it will be useful,
  14. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16. * GNU General Public License for more details.
  17. *
  18. * You should have received a copy of the GNU General Public License
  19. * along with this program; if not, write to the Free Software
  20. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21. * MA 02111-1307 USA
  22. */
  23. #ifndef __ASM_GBL_DATA_H
  24. #define __ASM_GBL_DATA_H
  25. /*
  26. * The following data structure is placed in some memory wich is
  27. * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
  28. * some locked parts of the data cache) to allow for a minimum set of
  29. * global variables during system initialization (until we have set
  30. * up the memory controller so that we can use RAM).
  31. *
  32. * Keep it *SMALL* and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t)
  33. */
  34. typedef struct global_data {
  35. bd_t *bd;
  36. unsigned long flags;
  37. unsigned long baudrate;
  38. unsigned long cpu_clk; /* CPU clock in Hz! */
  39. unsigned long bus_clk;
  40. #ifdef CONFIG_PCI
  41. unsigned long pci_clk;
  42. #endif
  43. #ifdef CONFIG_EXTRA_CLOCK
  44. unsigned long inp_clk;
  45. unsigned long vco_clk;
  46. unsigned long flb_clk;
  47. #endif
  48. #ifdef CONFIG_FSL_I2C
  49. unsigned long i2c1_clk;
  50. unsigned long i2c2_clk;
  51. #endif
  52. phys_size_t ram_size; /* RAM size */
  53. unsigned long reloc_off; /* Relocation Offset */
  54. unsigned long reset_status; /* reset status register at boot */
  55. unsigned long env_addr; /* Address of Environment struct */
  56. unsigned long env_valid; /* Checksum of Environment valid? */
  57. unsigned long have_console; /* serial_init() was called */
  58. #if defined(CONFIG_LCD) || defined(CONFIG_VIDEO)
  59. unsigned long fb_base; /* Base addr of framebuffer memory */
  60. #endif
  61. #ifdef CONFIG_BOARD_TYPES
  62. unsigned long board_type;
  63. #endif
  64. void **jt; /* Standalone app jump table */
  65. char env_buf[32]; /* buffer for getenv() before reloc. */
  66. } gd_t;
  67. /*
  68. * Global Data Flags
  69. */
  70. #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */
  71. #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */
  72. #define GD_FLG_SILENT 0x00004 /* Silent mode */
  73. #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */
  74. #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */
  75. #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */
  76. #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */
  77. #define GD_FLG_ENV_READY 0x00080 /* Environment imported into hash table */
  78. #if 0
  79. extern gd_t *global_data;
  80. #define DECLARE_GLOBAL_DATA_PTR gd_t *gd = global_data
  81. #else
  82. #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("d7")
  83. #endif
  84. #endif /* __ASM_GBL_DATA_H */