global_data.h 6.3 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 <fdtdec.h>
  22. #include <membuff.h>
  23. #include <linux/list.h>
  24. typedef struct global_data {
  25. struct bd_info *bd;
  26. unsigned long flags;
  27. unsigned int baudrate;
  28. unsigned long cpu_clk; /* CPU clock in Hz! */
  29. unsigned long bus_clk;
  30. /* We cannot bracket this with CONFIG_PCI due to mpc5xxx */
  31. unsigned long pci_clk;
  32. unsigned long mem_clk;
  33. #if defined(CONFIG_LCD) || defined(CONFIG_VIDEO) || defined(CONFIG_DM_VIDEO)
  34. unsigned long fb_base; /* Base address of framebuffer mem */
  35. #endif
  36. #if defined(CONFIG_POST)
  37. unsigned long post_log_word; /* Record POST activities */
  38. unsigned long post_log_res; /* success of POST test */
  39. unsigned long post_init_f_time; /* When post_init_f started */
  40. #endif
  41. #ifdef CONFIG_BOARD_TYPES
  42. unsigned long board_type;
  43. #endif
  44. unsigned long have_console; /* serial_init() was called */
  45. #if CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER)
  46. unsigned long precon_buf_idx; /* Pre-Console buffer index */
  47. #endif
  48. unsigned long env_addr; /* Address of Environment struct */
  49. unsigned long env_valid; /* Environment valid? enum env_valid */
  50. unsigned long env_has_init; /* Bitmask of boolean of struct env_location offsets */
  51. int env_load_prio; /* Priority of the loaded environment */
  52. unsigned long ram_base; /* Base address of RAM used by U-Boot */
  53. unsigned long ram_top; /* Top address of RAM used by U-Boot */
  54. unsigned long relocaddr; /* Start address of U-Boot in RAM */
  55. phys_size_t ram_size; /* RAM size */
  56. unsigned long mon_len; /* monitor len */
  57. unsigned long irq_sp; /* irq stack pointer */
  58. unsigned long start_addr_sp; /* start_addr_stackpointer */
  59. unsigned long reloc_off;
  60. struct global_data *new_gd; /* relocated global data */
  61. #ifdef CONFIG_DM
  62. struct udevice *dm_root; /* Root instance for Driver Model */
  63. struct udevice *dm_root_f; /* Pre-relocation root instance */
  64. struct list_head uclass_root; /* Head of core tree */
  65. #endif
  66. #ifdef CONFIG_TIMER
  67. struct udevice *timer; /* Timer instance for Driver Model */
  68. #endif
  69. const void *fdt_blob; /* Our device tree, NULL if none */
  70. void *new_fdt; /* Relocated FDT */
  71. unsigned long fdt_size; /* Space reserved for relocated FDT */
  72. #ifdef CONFIG_OF_LIVE
  73. struct device_node *of_root;
  74. #endif
  75. #if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
  76. const void *multi_dtb_fit; /* uncompressed multi-dtb FIT image */
  77. #endif
  78. struct jt_funcs *jt; /* jump table */
  79. char env_buf[32]; /* buffer for env_get() before reloc. */
  80. #ifdef CONFIG_TRACE
  81. void *trace_buff; /* The trace buffer */
  82. #endif
  83. #if defined(CONFIG_SYS_I2C)
  84. int cur_i2c_bus; /* current used i2c bus */
  85. #endif
  86. unsigned int timebase_h;
  87. unsigned int timebase_l;
  88. #if CONFIG_VAL(SYS_MALLOC_F_LEN)
  89. unsigned long malloc_base; /* base address of early malloc() */
  90. unsigned long malloc_limit; /* limit address */
  91. unsigned long malloc_ptr; /* current address */
  92. #endif
  93. #ifdef CONFIG_PCI
  94. struct pci_controller *hose; /* PCI hose for early use */
  95. phys_addr_t pci_ram_top; /* top of region accessible to PCI */
  96. #endif
  97. #ifdef CONFIG_PCI_BOOTDELAY
  98. int pcidelay_done;
  99. #endif
  100. struct udevice *cur_serial_dev; /* current serial device */
  101. struct arch_global_data arch; /* architecture-specific data */
  102. #ifdef CONFIG_CONSOLE_RECORD
  103. struct membuff console_out; /* console output */
  104. struct membuff console_in; /* console input */
  105. #endif
  106. #ifdef CONFIG_DM_VIDEO
  107. ulong video_top; /* Top of video frame buffer area */
  108. ulong video_bottom; /* Bottom of video frame buffer area */
  109. #endif
  110. #ifdef CONFIG_BOOTSTAGE
  111. struct bootstage_data *bootstage; /* Bootstage information */
  112. struct bootstage_data *new_bootstage; /* Relocated bootstage info */
  113. #endif
  114. #ifdef CONFIG_LOG
  115. int log_drop_count; /* Number of dropped log messages */
  116. int default_log_level; /* For devices with no filters */
  117. struct list_head log_head; /* List of struct log_device */
  118. int log_fmt; /* Mask containing log format info */
  119. #endif
  120. #if CONFIG_IS_ENABLED(BLOBLIST)
  121. struct bloblist_hdr *bloblist; /* Bloblist information */
  122. struct bloblist_hdr *new_bloblist; /* Relocated blolist info */
  123. # ifdef CONFIG_SPL
  124. struct spl_handoff *spl_handoff;
  125. # endif
  126. #endif
  127. #if defined(CONFIG_TRANSLATION_OFFSET)
  128. fdt_addr_t translation_offset; /* optional translation offset */
  129. #endif
  130. #if CONFIG_IS_ENABLED(WDT)
  131. struct udevice *watchdog_dev;
  132. #endif
  133. } gd_t;
  134. #endif
  135. #ifdef CONFIG_BOARD_TYPES
  136. #define gd_board_type() gd->board_type
  137. #else
  138. #define gd_board_type() 0
  139. #endif
  140. /*
  141. * Global Data Flags
  142. */
  143. #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */
  144. #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */
  145. #define GD_FLG_SILENT 0x00004 /* Silent mode */
  146. #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */
  147. #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */
  148. #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */
  149. #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */
  150. #define GD_FLG_ENV_READY 0x00080 /* Env. imported into hash table */
  151. #define GD_FLG_SERIAL_READY 0x00100 /* Pre-reloc serial console ready */
  152. #define GD_FLG_FULL_MALLOC_INIT 0x00200 /* Full malloc() is ready */
  153. #define GD_FLG_SPL_INIT 0x00400 /* spl_init() has been called */
  154. #define GD_FLG_SKIP_RELOC 0x00800 /* Don't relocate */
  155. #define GD_FLG_RECORD 0x01000 /* Record console */
  156. #define GD_FLG_ENV_DEFAULT 0x02000 /* Default variable flag */
  157. #define GD_FLG_SPL_EARLY_INIT 0x04000 /* Early SPL init is done */
  158. #define GD_FLG_LOG_READY 0x08000 /* Log system is ready for use */
  159. #define GD_FLG_WDT_READY 0x10000 /* Watchdog is ready for use */
  160. #define GD_FLG_SKIP_LL_INIT 0x20000 /* Don't perform low-level init */
  161. #define GD_FLG_SMP_READY 0x40000 /* SMP init is complete */
  162. #endif /* __ASM_GENERIC_GBL_DATA_H */