arch/arm/include/asm/global_data.h

   1 /*
   2  * (C) Copyright 2002-2010
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #ifndef __ASM_GBL_DATA_H
  25 #define __ASM_GBL_DATA_H
  26
  27 /* Architecture-specific global data */
  28 struct arch_global_data {
  29 #ifdef CONFIG_AT91FAMILY
  30         /* "static data" needed by at91's clock.c */
  31         unsigned long   cpu_clk_rate_hz;
  32         unsigned long   main_clk_rate_hz;
  33         unsigned long   mck_rate_hz;
  34         unsigned long   plla_rate_hz;
  35         unsigned long   pllb_rate_hz;
  36         unsigned long   at91_pllb_usb_init;
  37 #endif
  38         /* "static data" needed by most of timer.c on ARM platforms */
  39         unsigned long timer_rate_hz;
  40         unsigned long tbu;
  41         unsigned long tbl;
  42 };
  43
  44 /*
  45  * The following data structure is placed in some memory which is
  46  * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
  47  * some locked parts of the data cache) to allow for a minimum set of
  48  * global variables during system initialization (until we have set
  49  * up the memory controller so that we can use RAM).
  50  */
  51
  52 typedef struct  global_data {
  53         bd_t            *bd;
  54         unsigned long   flags;
  55         unsigned int    baudrate;
  56         unsigned long   have_console;   /* serial_init() was called */
  57 #ifdef CONFIG_PRE_CONSOLE_BUFFER
  58         unsigned long   precon_buf_idx; /* Pre-Console buffer index */
  59 #endif
  60         unsigned long   env_addr;       /* Address  of Environment struct */
  61         unsigned long   env_valid;      /* Checksum of Environment valid? */
  62         unsigned long   fb_base;        /* base address of frame buffer */
  63 #ifdef CONFIG_FSL_ESDHC
  64         unsigned long   sdhc_clk;
  65 #endif
  66 #ifdef CONFIG_ARM
  67         /* "static data" needed by most of timer.c on ARM platforms */
  68         unsigned long long      timer_reset_value;
  69         unsigned long   lastinc;
  70 #endif
  71 #ifdef CONFIG_IXP425
  72         unsigned long   timestamp;
  73 #endif
  74         unsigned long   relocaddr;      /* Start address of U-Boot in RAM */
  75         phys_size_t     ram_size;       /* RAM size */
  76         unsigned long   mon_len;        /* monitor len */
  77         unsigned long   irq_sp;         /* irq stack pointer */
  78         unsigned long   start_addr_sp;  /* start_addr_stackpointer */
  79         unsigned long   reloc_off;
  80 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
  81         unsigned long   tlb_addr;
  82         unsigned long   tlb_size;
  83 #endif
  84         const void      *fdt_blob;      /* Our device tree, NULL if none */
  85         void            **jt;           /* jump table */
  86         char            env_buf[32];    /* buffer for getenv() before reloc. */
  87 #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
  88         unsigned long   post_log_word; /* Record POST activities */
  89         unsigned long   post_log_res; /* success of POST test */
  90         unsigned long   post_init_f_time; /* When post_init_f started */
  91 #endif
  92         struct arch_global_data arch;   /* architecture-specific data */
  93 } gd_t;
  94
  95 #include <asm-generic/global_data_flags.h>
  96
  97 #define DECLARE_GLOBAL_DATA_PTR     register volatile gd_t *gd asm ("r8")
  98
  99 #endif /* __ASM_GBL_DATA_H */