include/asm-generic/global_data.h

   1 /*
   2  * Copyright (c) 2012 The Chromium OS Authors.
   3  * (C) Copyright 2002-2010
   4  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #ifndef __ASM_GENERIC_GBL_DATA_H
  10 #define __ASM_GENERIC_GBL_DATA_H
  11 /*
  12  * The following data structure is placed in some memory which is
  13  * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
  14  * some locked parts of the data cache) to allow for a minimum set of
  15  * global variables during system initialization (until we have set
  16  * up the memory controller so that we can use RAM).
  17  *
  18  * Keep it *SMALL* and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t)
  19  *
  20  * Each architecture has its own private fields. For now all are private
  21  */
  22
  23 #ifndef __ASSEMBLY__
  24 #include <membuff.h>
  25 #include <linux/list.h>
  26
  27 typedef struct global_data {
  28         bd_t *bd;
  29         unsigned long flags;
  30         unsigned int baudrate;
  31         unsigned long cpu_clk;          /* CPU clock in Hz!             */
  32         unsigned long bus_clk;
  33         /* We cannot bracket this with CONFIG_PCI due to mpc5xxx */
  34         unsigned long pci_clk;
  35         unsigned long mem_clk;
  36 #if defined(CONFIG_LCD) || defined(CONFIG_VIDEO)
  37         unsigned long fb_base;          /* Base address of framebuffer mem */
  38 #endif
  39 #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
  40         unsigned long post_log_word;    /* Record POST activities */
  41         unsigned long post_log_res;     /* success of POST test */
  42         unsigned long post_init_f_time; /* When post_init_f started */
  43 #endif
  44 #ifdef CONFIG_BOARD_TYPES
  45         unsigned long board_type;
  46 #endif
  47         unsigned long have_console;     /* serial_init() was called */
  48 #if CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER)
  49         unsigned long precon_buf_idx;   /* Pre-Console buffer index */
  50 #endif
  51         unsigned long env_addr;         /* Address  of Environment struct */
  52         unsigned long env_valid;        /* Checksum of Environment valid? */
  53
  54         unsigned long ram_top;          /* Top address of RAM used by U-Boot */
  55         unsigned long relocaddr;        /* Start address of U-Boot in RAM */
  56         phys_size_t ram_size;           /* RAM size */
  57         unsigned long mon_len;          /* monitor len */
  58         unsigned long irq_sp;           /* irq stack pointer */
  59         unsigned long start_addr_sp;    /* start_addr_stackpointer */
  60         unsigned long reloc_off;
  61         struct global_data *new_gd;     /* relocated global data */
  62
  63 #ifdef CONFIG_DM
  64         struct udevice  *dm_root;       /* Root instance for Driver Model */
  65         struct udevice  *dm_root_f;     /* Pre-relocation root instance */
  66         struct list_head uclass_root;   /* Head of core tree */
  67 #endif
  68 #ifdef CONFIG_TIMER
  69         struct udevice  *timer;         /* Timer instance for Driver Model */
  70 #endif
  71
  72         const void *fdt_blob;           /* Our device tree, NULL if none */
  73         void *new_fdt;                  /* Relocated FDT */
  74         unsigned long fdt_size;         /* Space reserved for relocated FDT */
  75 #ifdef CONFIG_OF_LIVE
  76         struct device_node *of_root;
  77 #endif
  78         struct jt_funcs *jt;            /* jump table */
  79         char env_buf[32];               /* buffer for getenv() 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 #ifdef CONFIG_SYS_I2C_MXC
  87         void *srdata[10];
  88 #endif
  89         unsigned int timebase_h;
  90         unsigned int timebase_l;
  91 #ifdef CONFIG_SYS_MALLOC_F_LEN
  92         unsigned long malloc_base;      /* base address of early malloc() */
  93         unsigned long malloc_limit;     /* limit address */
  94         unsigned long malloc_ptr;       /* current address */
  95 #endif
  96 #ifdef CONFIG_PCI
  97         struct pci_controller *hose;    /* PCI hose for early use */
  98         phys_addr_t pci_ram_top;        /* top of region accessible to PCI */
  99 #endif
 100 #ifdef CONFIG_PCI_BOOTDELAY
 101         int pcidelay_done;
 102 #endif
 103         struct udevice *cur_serial_dev; /* current serial device */
 104         struct arch_global_data arch;   /* architecture-specific data */
 105 #ifdef CONFIG_CONSOLE_RECORD
 106         struct membuff console_out;     /* console output */
 107         struct membuff console_in;      /* console input */
 108 #endif
 109 #ifdef CONFIG_DM_VIDEO
 110         ulong video_top;                /* Top of video frame buffer area */
 111         ulong video_bottom;             /* Bottom of video frame buffer area */
 112 #endif
 113 #ifdef CONFIG_BOOTSTAGE
 114         struct bootstage_data *bootstage;       /* Bootstage information */
 115         struct bootstage_data *new_bootstage;   /* Relocated bootstage info */
 116 #endif
 117 } gd_t;
 118 #endif
 119
 120 #ifdef CONFIG_BOARD_TYPES
 121 #define gd_board_type()         gd->board_type
 122 #else
 123 #define gd_board_type()         0
 124 #endif
 125
 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
 145 #endif /* __ASM_GENERIC_GBL_DATA_H */