global_data.h 2.3 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. #include <asm/regdef.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. #ifdef CONFIG_JZSOC
  37. /* There are other clocks in the jz4740 */
  38. unsigned long cpu_clk; /* CPU core clock */
  39. unsigned long sys_clk; /* System bus clock */
  40. unsigned long per_clk; /* Peripheral bus clock */
  41. unsigned long mem_clk; /* Memory bus clock */
  42. unsigned long dev_clk; /* Device clock */
  43. /* "static data" needed by most of timer.c */
  44. unsigned long tbl;
  45. unsigned long lastinc;
  46. #endif
  47. unsigned long baudrate;
  48. unsigned long have_console; /* serial_init() was called */
  49. #ifdef CONFIG_PRE_CONSOLE_BUFFER
  50. unsigned long precon_buf_idx; /* Pre-Console buffer index */
  51. #endif
  52. phys_size_t ram_size; /* RAM size */
  53. unsigned long reloc_off; /* Relocation Offset */
  54. unsigned long env_addr; /* Address of Environment struct */
  55. unsigned long env_valid; /* Checksum of Environment valid? */
  56. void **jt; /* jump table */
  57. char env_buf[32]; /* buffer for getenv() before reloc. */
  58. } gd_t;
  59. #include <asm-generic/global_data_flags.h>
  60. #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("k0")
  61. #endif /* __ASM_GBL_DATA_H */