global_data.h 3.3 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. /* Architecture-specific global data */
  26. struct arch_global_data {
  27. };
  28. /*
  29. * The following data structure is placed in some memory which is
  30. * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
  31. * some locked parts of the data cache) to allow for a minimum set of
  32. * global variables during system initialization (until we have set
  33. * up the memory controller so that we can use RAM).
  34. */
  35. typedef struct global_data {
  36. bd_t *bd;
  37. unsigned long flags;
  38. unsigned int baudrate;
  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 env_addr; /* Address of Environment struct */
  44. unsigned long env_valid; /* Checksum of Environment valid? */
  45. unsigned long fb_base; /* base address of frame buffer */
  46. #ifdef CONFIG_FSL_ESDHC
  47. unsigned long sdhc_clk;
  48. #endif
  49. #ifdef CONFIG_AT91FAMILY
  50. /* "static data" needed by at91's clock.c */
  51. unsigned long cpu_clk_rate_hz;
  52. unsigned long main_clk_rate_hz;
  53. unsigned long mck_rate_hz;
  54. unsigned long plla_rate_hz;
  55. unsigned long pllb_rate_hz;
  56. unsigned long at91_pllb_usb_init;
  57. #endif
  58. #ifdef CONFIG_ARM
  59. /* "static data" needed by most of timer.c on ARM platforms */
  60. unsigned long timer_rate_hz;
  61. unsigned long tbl;
  62. unsigned long tbu;
  63. unsigned long long timer_reset_value;
  64. unsigned long lastinc;
  65. #endif
  66. #ifdef CONFIG_IXP425
  67. unsigned long timestamp;
  68. #endif
  69. unsigned long relocaddr; /* Start address of U-Boot in RAM */
  70. phys_size_t ram_size; /* RAM size */
  71. unsigned long mon_len; /* monitor len */
  72. unsigned long irq_sp; /* irq stack pointer */
  73. unsigned long start_addr_sp; /* start_addr_stackpointer */
  74. unsigned long reloc_off;
  75. #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
  76. unsigned long tlb_addr;
  77. unsigned long tlb_size;
  78. #endif
  79. const void *fdt_blob; /* Our device tree, NULL if none */
  80. void **jt; /* jump table */
  81. char env_buf[32]; /* buffer for getenv() before reloc. */
  82. #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
  83. unsigned long post_log_word; /* Record POST activities */
  84. unsigned long post_log_res; /* success of POST test */
  85. unsigned long post_init_f_time; /* When post_init_f started */
  86. #endif
  87. struct arch_global_data arch; /* architecture-specific data */
  88. } gd_t;
  89. #include <asm-generic/global_data_flags.h>
  90. #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("r8")
  91. #endif /* __ASM_GBL_DATA_H */