include/asm-generic/global_data.h

   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
   8 #ifndef __ASM_GENERIC_GBL_DATA_H
   9 #define __ASM_GENERIC_GBL_DATA_H
  10 /*
  11  * The following data structure is placed in some memory which is
  12  * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
  13  * some locked parts of the data cache) to allow for a minimum set of
  14  * global variables during system initialization (until we have set
  15  * up the memory controller so that we can use RAM).
  16  *
  17  * Keep it *SMALL* and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t)
  18  *
  19  * Each architecture has its own private fields. For now all are private
  20  */
  21
  22 #ifndef __ASSEMBLY__
  23 #include <fdtdec.h>
  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) || defined(CONFIG_DM_VIDEO)
  37         unsigned long fb_base;          /* Base address of framebuffer mem */
  38 #endif
  39 #if defined(CONFIG_POST)
  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;        /* Environment valid? enum env_valid */
  53         unsigned long env_has_init;     /* Bitmask of boolean of struct env_location offsets */
  54         int env_load_prio;              /* Priority of the loaded environment */
  55
  56         unsigned long ram_base;         /* Base address of RAM used by U-Boot */
  57         unsigned long ram_top;          /* Top address of RAM used by U-Boot */
  58         unsigned long relocaddr;        /* Start address of U-Boot in RAM */
  59         phys_size_t ram_size;           /* RAM size */
  60         unsigned long mon_len;          /* monitor len */
  61         unsigned long irq_sp;           /* irq stack pointer */
  62         unsigned long start_addr_sp;    /* start_addr_stackpointer */
  63         unsigned long reloc_off;
  64         struct global_data *new_gd;     /* relocated global data */
  65
  66 #ifdef CONFIG_DM
  67         struct udevice  *dm_root;       /* Root instance for Driver Model */
  68         struct udevice  *dm_root_f;     /* Pre-relocation root instance */
  69         struct list_head uclass_root;   /* Head of core tree */
  70 #endif
  71 #ifdef CONFIG_TIMER
  72         struct udevice  *timer;         /* Timer instance for Driver Model */
  73 #endif
  74
  75         const void *fdt_blob;           /* Our device tree, NULL if none */
  76         void *new_fdt;                  /* Relocated FDT */
  77         unsigned long fdt_size;         /* Space reserved for relocated FDT */
  78 #ifdef CONFIG_OF_LIVE
  79         struct device_node *of_root;
  80 #endif
  81
  82 #if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
  83         const void *multi_dtb_fit;      /* uncompressed multi-dtb FIT image */
  84 #endif
  85         struct jt_funcs *jt;            /* jump table */
  86         char env_buf[32];               /* buffer for env_get() before reloc. */
  87 #ifdef CONFIG_TRACE
  88         void            *trace_buff;    /* The trace buffer */
  89 #endif
  90 #if defined(CONFIG_SYS_I2C)
  91         int             cur_i2c_bus;    /* current used i2c bus */
  92 #endif
  93 #ifdef CONFIG_SYS_I2C_MXC
  94         void *srdata[10];
  95 #endif
  96         unsigned int timebase_h;
  97         unsigned int timebase_l;
  98 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
  99         unsigned long malloc_base;      /* base address of early malloc() */
 100         unsigned long malloc_limit;     /* limit address */
 101         unsigned long malloc_ptr;       /* current address */
 102 #endif
 103 #ifdef CONFIG_PCI
 104         struct pci_controller *hose;    /* PCI hose for early use */
 105         phys_addr_t pci_ram_top;        /* top of region accessible to PCI */
 106 #endif
 107 #ifdef CONFIG_PCI_BOOTDELAY
 108         int pcidelay_done;
 109 #endif
 110         struct udevice *cur_serial_dev; /* current serial device */
 111         struct arch_global_data arch;   /* architecture-specific data */
 112 #ifdef CONFIG_CONSOLE_RECORD
 113         struct membuff console_out;     /* console output */
 114         struct membuff console_in;      /* console input */
 115 #endif
 116 #ifdef CONFIG_DM_VIDEO
 117         ulong video_top;                /* Top of video frame buffer area */
 118         ulong video_bottom;             /* Bottom of video frame buffer area */
 119 #endif
 120 #ifdef CONFIG_BOOTSTAGE
 121         struct bootstage_data *bootstage;       /* Bootstage information */
 122         struct bootstage_data *new_bootstage;   /* Relocated bootstage info */
 123 #endif
 124 #ifdef CONFIG_LOG
 125         int log_drop_count;             /* Number of dropped log messages */
 126         int default_log_level;          /* For devices with no filters */
 127         struct list_head log_head;      /* List of struct log_device */
 128         int log_fmt;                    /* Mask containing log format info */
 129 #endif
 130 #if CONFIG_IS_ENABLED(BLOBLIST)
 131         struct bloblist_hdr *bloblist;  /* Bloblist information */
 132         struct bloblist_hdr *new_bloblist;      /* Relocated blolist info */
 133 # ifdef CONFIG_SPL
 134         struct spl_handoff *spl_handoff;
 135 # endif
 136 #endif
 137 #if defined(CONFIG_TRANSLATION_OFFSET)
 138         fdt_addr_t translation_offset;  /* optional translation offset */
 139 #endif
 140 #if CONFIG_IS_ENABLED(WDT)
 141         struct udevice *watchdog_dev;
 142 #endif
 143 } gd_t;
 144 #endif
 145
 146 #ifdef CONFIG_BOARD_TYPES
 147 #define gd_board_type()         gd->board_type
 148 #else
 149 #define gd_board_type()         0
 150 #endif
 151
 152 /*
 153  * Global Data Flags
 154  */
 155 #define GD_FLG_RELOC            0x00001 /* Code was relocated to RAM       */
 156 #define GD_FLG_DEVINIT          0x00002 /* Devices have been initialized   */
 157 #define GD_FLG_SILENT           0x00004 /* Silent mode                     */
 158 #define GD_FLG_POSTFAIL         0x00008 /* Critical POST test failed       */
 159 #define GD_FLG_POSTSTOP         0x00010 /* POST seqeunce aborted           */
 160 #define GD_FLG_LOGINIT          0x00020 /* Log Buffer has been initialized */
 161 #define GD_FLG_DISABLE_CONSOLE  0x00040 /* Disable console (in & out)      */
 162 #define GD_FLG_ENV_READY        0x00080 /* Env. imported into hash table   */
 163 #define GD_FLG_SERIAL_READY     0x00100 /* Pre-reloc serial console ready  */
 164 #define GD_FLG_FULL_MALLOC_INIT 0x00200 /* Full malloc() is ready          */
 165 #define GD_FLG_SPL_INIT         0x00400 /* spl_init() has been called      */
 166 #define GD_FLG_SKIP_RELOC       0x00800 /* Don't relocate                  */
 167 #define GD_FLG_RECORD           0x01000 /* Record console                  */
 168 #define GD_FLG_ENV_DEFAULT      0x02000 /* Default variable flag           */
 169 #define GD_FLG_SPL_EARLY_INIT   0x04000 /* Early SPL init is done          */
 170 #define GD_FLG_LOG_READY        0x08000 /* Log system is ready for use     */
 171 #define GD_FLG_WDT_READY        0x10000 /* Watchdog is ready for use       */
 172
 173 #endif /* __ASM_GENERIC_GBL_DATA_H */