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 <linux/list.h>
  25
  26 typedef struct global_data {
  27         bd_t *bd;
  28         unsigned long flags;
  29         unsigned int baudrate;
  30         unsigned long cpu_clk;  /* CPU clock in Hz!             */
  31         unsigned long bus_clk;
  32         /* We cannot bracket this with CONFIG_PCI due to mpc5xxx */
  33         unsigned long pci_clk;
  34         unsigned long mem_clk;
  35 #if defined(CONFIG_LCD) || defined(CONFIG_VIDEO)
  36         unsigned long fb_base;  /* Base address of framebuffer mem */
  37 #endif
  38 #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
  39         unsigned long post_log_word;  /* Record POST activities */
  40         unsigned long post_log_res; /* success of POST test */
  41         unsigned long post_init_f_time;  /* When post_init_f started */
  42 #endif
  43 #ifdef CONFIG_BOARD_TYPES
  44         unsigned long board_type;
  45 #endif
  46         unsigned long have_console;     /* serial_init() was called */
  47 #ifdef CONFIG_PRE_CONSOLE_BUFFER
  48         unsigned long precon_buf_idx;   /* Pre-Console buffer index */
  49 #endif
  50 #ifdef CONFIG_MODEM_SUPPORT
  51         unsigned long do_mdm_init;
  52         unsigned long be_quiet;
  53 #endif
  54         unsigned long env_addr; /* Address  of Environment struct */
  55         unsigned long env_valid;        /* Checksum of Environment valid? */
  56
  57         unsigned long ram_top;  /* Top address of RAM used by U-Boot */
  58
  59         unsigned long relocaddr;        /* Start address of U-Boot in RAM */
  60         phys_size_t ram_size;   /* RAM size */
  61         unsigned long mon_len;  /* monitor len */
  62         unsigned long irq_sp;           /* irq stack pointer */
  63         unsigned long start_addr_sp;    /* start_addr_stackpointer */
  64         unsigned long reloc_off;
  65         struct global_data *new_gd;     /* relocated global data */
  66
  67 #ifdef CONFIG_DM
  68         struct udevice  *dm_root;       /* Root instance for Driver Model */
  69         struct udevice  *dm_root_f;     /* Pre-relocation root instance */
  70         struct list_head uclass_root;   /* Head of core tree */
  71 #endif
  72 #ifdef CONFIG_TIMER
  73         struct udevice  *timer; /* Timer instance for Driver Model */
  74 #endif
  75
  76         const void *fdt_blob;   /* Our device tree, NULL if none */
  77         void *new_fdt;          /* Relocated FDT */
  78         unsigned long fdt_size; /* Space reserved for relocated FDT */
  79         struct jt_funcs *jt;            /* jump table */
  80         char env_buf[32];       /* buffer for getenv() before reloc. */
  81 #ifdef CONFIG_TRACE
  82         void            *trace_buff;    /* The trace buffer */
  83 #endif
  84 #if defined(CONFIG_SYS_I2C)
  85         int             cur_i2c_bus;    /* current used i2c bus */
  86 #endif
  87 #ifdef CONFIG_SYS_I2C_MXC
  88         void *srdata[10];
  89 #endif
  90         unsigned long timebase_h;
  91         unsigned long timebase_l;
  92 #ifdef CONFIG_SYS_MALLOC_F_LEN
  93         unsigned long malloc_base;      /* base address of early malloc() */
  94         unsigned long malloc_limit;     /* limit address */
  95         unsigned long malloc_ptr;       /* current address */
  96 #endif
  97 #ifdef CONFIG_PCI
  98         struct pci_controller *hose;    /* PCI hose for early use */
  99         phys_addr_t pci_ram_top;        /* top of region accessible to PCI */
 100 #endif
 101 #ifdef CONFIG_PCI_BOOTDELAY
 102         int pcidelay_done;
 103 #endif
 104         struct udevice *cur_serial_dev; /* current serial device */
 105         struct arch_global_data arch;   /* architecture-specific data */
 106 } gd_t;
 107 #endif
 108
 109 /*
 110  * Global Data Flags - the top 16 bits are reserved for arch-specific flags
 111  */
 112 #define GD_FLG_RELOC            0x00001 /* Code was relocated to RAM       */
 113 #define GD_FLG_DEVINIT          0x00002 /* Devices have been initialized   */
 114 #define GD_FLG_SILENT           0x00004 /* Silent mode                     */
 115 #define GD_FLG_POSTFAIL         0x00008 /* Critical POST test failed       */
 116 #define GD_FLG_POSTSTOP         0x00010 /* POST seqeunce aborted           */
 117 #define GD_FLG_LOGINIT          0x00020 /* Log Buffer has been initialized */
 118 #define GD_FLG_DISABLE_CONSOLE  0x00040 /* Disable console (in & out)      */
 119 #define GD_FLG_ENV_READY        0x00080 /* Env. imported into hash table   */
 120 #define GD_FLG_SERIAL_READY     0x00100 /* Pre-reloc serial console ready  */
 121 #define GD_FLG_FULL_MALLOC_INIT 0x00200 /* Full malloc() is ready          */
 122 #define GD_FLG_SPL_INIT         0x00400 /* spl_init() has been called      */
 123 #define GD_FLG_SKIP_RELOC       0x00800 /* Don't relocate */
 124
 125 #endif /* __ASM_GENERIC_GBL_DATA_H */