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 #ifdef CONFIG_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
  56         unsigned long relocaddr;        /* Start address of U-Boot in RAM */
  57         phys_size_t ram_size;   /* RAM size */
  58         unsigned long mon_len;  /* monitor len */
  59         unsigned long irq_sp;           /* irq stack pointer */
  60         unsigned long start_addr_sp;    /* start_addr_stackpointer */
  61         unsigned long reloc_off;
  62         struct global_data *new_gd;     /* relocated global data */
  63
  64 #ifdef CONFIG_DM
  65         struct udevice  *dm_root;       /* Root instance for Driver Model */
  66         struct udevice  *dm_root_f;     /* Pre-relocation root instance */
  67         struct list_head uclass_root;   /* Head of core tree */
  68 #endif
  69 #ifdef CONFIG_TIMER
  70         struct udevice  *timer; /* Timer instance for Driver Model */
  71 #endif
  72
  73         const void *fdt_blob;   /* Our device tree, NULL if none */
  74         void *new_fdt;          /* Relocated FDT */
  75         unsigned long fdt_size; /* Space reserved for relocated FDT */
  76         struct jt_funcs *jt;            /* jump table */
  77         char env_buf[32];       /* buffer for getenv() before reloc. */
  78 #ifdef CONFIG_TRACE
  79         void            *trace_buff;    /* The trace buffer */
  80 #endif
  81 #if defined(CONFIG_SYS_I2C)
  82         int             cur_i2c_bus;    /* current used i2c bus */
  83 #endif
  84 #ifdef CONFIG_SYS_I2C_MXC
  85         void *srdata[10];
  86 #endif
  87         unsigned long timebase_h;
  88         unsigned long timebase_l;
  89 #ifdef CONFIG_SYS_MALLOC_F_LEN
  90         unsigned long malloc_base;      /* base address of early malloc() */
  91         unsigned long malloc_limit;     /* limit address */
  92         unsigned long malloc_ptr;       /* current address */
  93 #endif
  94 #ifdef CONFIG_PCI
  95         struct pci_controller *hose;    /* PCI hose for early use */
  96         phys_addr_t pci_ram_top;        /* top of region accessible to PCI */
  97 #endif
  98 #ifdef CONFIG_PCI_BOOTDELAY
  99         int pcidelay_done;
 100 #endif
 101         struct udevice *cur_serial_dev; /* current serial device */
 102         struct arch_global_data arch;   /* architecture-specific data */
 103 #ifdef CONFIG_CONSOLE_RECORD
 104         struct membuff console_out;     /* console output */
 105         struct membuff console_in;      /* console input */
 106 #endif
 107 #ifdef CONFIG_DM_VIDEO
 108         ulong video_top;                /* Top of video frame buffer area */
 109         ulong video_bottom;             /* Bottom of video frame buffer area */
 110 #endif
 111 } gd_t;
 112 #endif
 113
 114 /*
 115  * Global Data Flags - the top 16 bits are reserved for arch-specific flags
 116  */
 117 #define GD_FLG_RELOC            0x00001 /* Code was relocated to RAM       */
 118 #define GD_FLG_DEVINIT          0x00002 /* Devices have been initialized   */
 119 #define GD_FLG_SILENT           0x00004 /* Silent mode                     */
 120 #define GD_FLG_POSTFAIL         0x00008 /* Critical POST test failed       */
 121 #define GD_FLG_POSTSTOP         0x00010 /* POST seqeunce aborted           */
 122 #define GD_FLG_LOGINIT          0x00020 /* Log Buffer has been initialized */
 123 #define GD_FLG_DISABLE_CONSOLE  0x00040 /* Disable console (in & out)      */
 124 #define GD_FLG_ENV_READY        0x00080 /* Env. imported into hash table   */
 125 #define GD_FLG_SERIAL_READY     0x00100 /* Pre-reloc serial console ready  */
 126 #define GD_FLG_FULL_MALLOC_INIT 0x00200 /* Full malloc() is ready          */
 127 #define GD_FLG_SPL_INIT         0x00400 /* spl_init() has been called      */
 128 #define GD_FLG_SKIP_RELOC       0x00800 /* Don't relocate */
 129 #define GD_FLG_RECORD           0x01000 /* Record console */
 130 #define GD_FLG_ENV_DEFAULT      0x02000 /* Default variable flag */
 131
 132 #endif /* __ASM_GENERIC_GBL_DATA_H */