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 #ifdef CONFIG_SYS_MEM_RESERVE_SECURE
  59 #define MEM_RESERVE_SECURE_SECURED      0x1
  60 #define MEM_RESERVE_SECURE_MAINTAINED   0x2
  61 #define MEM_RESERVE_SECURE_ADDR_MASK    (~0x3)
  62         /*
  63          * Secure memory addr
  64          * This variable needs maintenance if the RAM base is not zero,
  65          * or if RAM splits into non-consecutive banks. It also has a
  66          * flag indicating the secure memory is marked as secure by MMU.
  67          * Flags used: 0x1 secured
  68          *             0x2 maintained
  69          */
  70         phys_addr_t secure_ram;
  71 #endif
  72         unsigned long mon_len;  /* monitor len */
  73         unsigned long irq_sp;           /* irq stack pointer */
  74         unsigned long start_addr_sp;    /* start_addr_stackpointer */
  75         unsigned long reloc_off;
  76         struct global_data *new_gd;     /* relocated global data */
  77
  78 #ifdef CONFIG_DM
  79         struct udevice  *dm_root;       /* Root instance for Driver Model */
  80         struct udevice  *dm_root_f;     /* Pre-relocation root instance */
  81         struct list_head uclass_root;   /* Head of core tree */
  82 #endif
  83 #ifdef CONFIG_TIMER
  84         struct udevice  *timer; /* Timer instance for Driver Model */
  85 #endif
  86
  87         const void *fdt_blob;   /* Our device tree, NULL if none */
  88         void *new_fdt;          /* Relocated FDT */
  89         unsigned long fdt_size; /* Space reserved for relocated FDT */
  90         struct jt_funcs *jt;            /* jump table */
  91         char env_buf[32];       /* buffer for getenv() before reloc. */
  92 #ifdef CONFIG_TRACE
  93         void            *trace_buff;    /* The trace buffer */
  94 #endif
  95 #if defined(CONFIG_SYS_I2C)
  96         int             cur_i2c_bus;    /* current used i2c bus */
  97 #endif
  98 #ifdef CONFIG_SYS_I2C_MXC
  99         void *srdata[10];
 100 #endif
 101         unsigned long timebase_h;
 102         unsigned long timebase_l;
 103 #ifdef CONFIG_SYS_MALLOC_F_LEN
 104         unsigned long malloc_base;      /* base address of early malloc() */
 105         unsigned long malloc_limit;     /* limit address */
 106         unsigned long malloc_ptr;       /* current address */
 107 #endif
 108 #ifdef CONFIG_PCI
 109         struct pci_controller *hose;    /* PCI hose for early use */
 110         phys_addr_t pci_ram_top;        /* top of region accessible to PCI */
 111 #endif
 112 #ifdef CONFIG_PCI_BOOTDELAY
 113         int pcidelay_done;
 114 #endif
 115         struct udevice *cur_serial_dev; /* current serial device */
 116         struct arch_global_data arch;   /* architecture-specific data */
 117 #ifdef CONFIG_CONSOLE_RECORD
 118         struct membuff console_out;     /* console output */
 119         struct membuff console_in;      /* console input */
 120 #endif
 121 #ifdef CONFIG_DM_VIDEO
 122         ulong video_top;                /* Top of video frame buffer area */
 123         ulong video_bottom;             /* Bottom of video frame buffer area */
 124 #endif
 125 } gd_t;
 126 #endif
 127
 128 /*
 129  * Global Data Flags - the top 16 bits are reserved for arch-specific flags
 130  */
 131 #define GD_FLG_RELOC            0x00001 /* Code was relocated to RAM       */
 132 #define GD_FLG_DEVINIT          0x00002 /* Devices have been initialized   */
 133 #define GD_FLG_SILENT           0x00004 /* Silent mode                     */
 134 #define GD_FLG_POSTFAIL         0x00008 /* Critical POST test failed       */
 135 #define GD_FLG_POSTSTOP         0x00010 /* POST seqeunce aborted           */
 136 #define GD_FLG_LOGINIT          0x00020 /* Log Buffer has been initialized */
 137 #define GD_FLG_DISABLE_CONSOLE  0x00040 /* Disable console (in & out)      */
 138 #define GD_FLG_ENV_READY        0x00080 /* Env. imported into hash table   */
 139 #define GD_FLG_SERIAL_READY     0x00100 /* Pre-reloc serial console ready  */
 140 #define GD_FLG_FULL_MALLOC_INIT 0x00200 /* Full malloc() is ready          */
 141 #define GD_FLG_SPL_INIT         0x00400 /* spl_init() has been called      */
 142 #define GD_FLG_SKIP_RELOC       0x00800 /* Don't relocate */
 143 #define GD_FLG_RECORD           0x01000 /* Record console */
 144
 145 #endif /* __ASM_GENERIC_GBL_DATA_H */