global_data.h 5.6 KB

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  1. /* SPDX-License-Identifier: GPL-2.0+ */
  2. /*
  3. * Copyright (c) 2012 The Chromium OS Authors.
  4. * (C) Copyright 2002-2010
  5. * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  6. */
  7. #ifndef __ASM_GENERIC_GBL_DATA_H
  8. #define __ASM_GENERIC_GBL_DATA_H
  9. /*
  10. * The following data structure is placed in some memory which is
  11. * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
  12. * some locked parts of the data cache) to allow for a minimum set of
  13. * global variables during system initialization (until we have set
  14. * up the memory controller so that we can use RAM).
  15. *
  16. * Keep it *SMALL* and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t)
  17. *
  18. * Each architecture has its own private fields. For now all are private
  19. */
  20. #ifndef __ASSEMBLY__
  21. #include <membuff.h>
  22. #include <linux/list.h>
  23. typedef struct global_data {
  24. bd_t *bd;
  25. unsigned long flags;
  26. unsigned int baudrate;
  27. unsigned long cpu_clk; /* CPU clock in Hz! */
  28. unsigned long bus_clk;
  29. /* We cannot bracket this with CONFIG_PCI due to mpc5xxx */
  30. unsigned long pci_clk;
  31. unsigned long mem_clk;
  32. #if defined(CONFIG_LCD) || defined(CONFIG_VIDEO)
  33. unsigned long fb_base; /* Base address of framebuffer mem */
  34. #endif
  35. #if defined(CONFIG_POST)
  36. unsigned long post_log_word; /* Record POST activities */
  37. unsigned long post_log_res; /* success of POST test */
  38. unsigned long post_init_f_time; /* When post_init_f started */
  39. #endif
  40. #ifdef CONFIG_BOARD_TYPES
  41. unsigned long board_type;
  42. #endif
  43. unsigned long have_console; /* serial_init() was called */
  44. #if CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER)
  45. unsigned long precon_buf_idx; /* Pre-Console buffer index */
  46. #endif
  47. unsigned long env_addr; /* Address of Environment struct */
  48. unsigned long env_valid; /* Environment valid? enum env_valid */
  49. unsigned long env_has_init; /* Bitmask of boolean of struct env_location offsets */
  50. int env_load_location;
  51. unsigned long ram_base; /* Base address of RAM used by U-Boot */
  52. unsigned long ram_top; /* Top address of RAM used by U-Boot */
  53. unsigned long relocaddr; /* Start address of U-Boot in RAM */
  54. phys_size_t ram_size; /* RAM size */
  55. unsigned long mon_len; /* monitor len */
  56. unsigned long irq_sp; /* irq stack pointer */
  57. unsigned long start_addr_sp; /* start_addr_stackpointer */
  58. unsigned long reloc_off;
  59. struct global_data *new_gd; /* relocated global data */
  60. #ifdef CONFIG_DM
  61. struct udevice *dm_root; /* Root instance for Driver Model */
  62. struct udevice *dm_root_f; /* Pre-relocation root instance */
  63. struct list_head uclass_root; /* Head of core tree */
  64. #endif
  65. #ifdef CONFIG_TIMER
  66. struct udevice *timer; /* Timer instance for Driver Model */
  67. #endif
  68. const void *fdt_blob; /* Our device tree, NULL if none */
  69. void *new_fdt; /* Relocated FDT */
  70. unsigned long fdt_size; /* Space reserved for relocated FDT */
  71. #ifdef CONFIG_OF_LIVE
  72. struct device_node *of_root;
  73. #endif
  74. struct jt_funcs *jt; /* jump table */
  75. char env_buf[32]; /* buffer for env_get() before reloc. */
  76. #ifdef CONFIG_TRACE
  77. void *trace_buff; /* The trace buffer */
  78. #endif
  79. #if defined(CONFIG_SYS_I2C)
  80. int cur_i2c_bus; /* current used i2c bus */
  81. #endif
  82. #ifdef CONFIG_SYS_I2C_MXC
  83. void *srdata[10];
  84. #endif
  85. unsigned int timebase_h;
  86. unsigned int timebase_l;
  87. #if CONFIG_VAL(SYS_MALLOC_F_LEN)
  88. unsigned long malloc_base; /* base address of early malloc() */
  89. unsigned long malloc_limit; /* limit address */
  90. unsigned long malloc_ptr; /* current address */
  91. #endif
  92. #ifdef CONFIG_PCI
  93. struct pci_controller *hose; /* PCI hose for early use */
  94. phys_addr_t pci_ram_top; /* top of region accessible to PCI */
  95. #endif
  96. #ifdef CONFIG_PCI_BOOTDELAY
  97. int pcidelay_done;
  98. #endif
  99. struct udevice *cur_serial_dev; /* current serial device */
  100. struct arch_global_data arch; /* architecture-specific data */
  101. #ifdef CONFIG_CONSOLE_RECORD
  102. struct membuff console_out; /* console output */
  103. struct membuff console_in; /* console input */
  104. #endif
  105. #ifdef CONFIG_DM_VIDEO
  106. ulong video_top; /* Top of video frame buffer area */
  107. ulong video_bottom; /* Bottom of video frame buffer area */
  108. #endif
  109. #ifdef CONFIG_BOOTSTAGE
  110. struct bootstage_data *bootstage; /* Bootstage information */
  111. struct bootstage_data *new_bootstage; /* Relocated bootstage info */
  112. #endif
  113. #ifdef CONFIG_LOG
  114. int log_drop_count; /* Number of dropped log messages */
  115. int default_log_level; /* For devices with no filters */
  116. struct list_head log_head; /* List of struct log_device */
  117. int log_fmt; /* Mask containing log format info */
  118. #endif
  119. } gd_t;
  120. #endif
  121. #ifdef CONFIG_BOARD_TYPES
  122. #define gd_board_type() gd->board_type
  123. #else
  124. #define gd_board_type() 0
  125. #endif
  126. /*
  127. * Global Data Flags - the top 16 bits are reserved for arch-specific flags
  128. */
  129. #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */
  130. #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */
  131. #define GD_FLG_SILENT 0x00004 /* Silent mode */
  132. #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */
  133. #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */
  134. #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */
  135. #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */
  136. #define GD_FLG_ENV_READY 0x00080 /* Env. imported into hash table */
  137. #define GD_FLG_SERIAL_READY 0x00100 /* Pre-reloc serial console ready */
  138. #define GD_FLG_FULL_MALLOC_INIT 0x00200 /* Full malloc() is ready */
  139. #define GD_FLG_SPL_INIT 0x00400 /* spl_init() has been called */
  140. #define GD_FLG_SKIP_RELOC 0x00800 /* Don't relocate */
  141. #define GD_FLG_RECORD 0x01000 /* Record console */
  142. #define GD_FLG_ENV_DEFAULT 0x02000 /* Default variable flag */
  143. #define GD_FLG_SPL_EARLY_INIT 0x04000 /* Early SPL init is done */
  144. #define GD_FLG_LOG_READY 0x08000 /* Log system is ready for use */
  145. #endif /* __ASM_GENERIC_GBL_DATA_H */