arch/mips/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 #include <asm/regdef.h>
  28
  29 /* Architecture-specific global data */
  30 struct arch_global_data {
  31 };
  32
  33 /*
  34  * The following data structure is placed in some memory wich is
  35  * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
  36  * some locked parts of the data cache) to allow for a minimum set of
  37  * global variables during system initialization (until we have set
  38  * up the memory controller so that we can use RAM).
  39  */
  40
  41 typedef struct  global_data {
  42         bd_t            *bd;
  43         unsigned long   flags;
  44 #ifdef CONFIG_JZSOC
  45         /* There are other clocks in the jz4740 */
  46         unsigned long   cpu_clk;        /* CPU core clock */
  47         unsigned long   sys_clk;        /* System bus clock */
  48         unsigned long   per_clk;        /* Peripheral bus clock */
  49         unsigned long   mem_clk;        /* Memory bus clock */
  50         unsigned long   dev_clk;        /* Device clock */
  51         /* "static data" needed by most of timer.c */
  52         unsigned long   tbl;
  53         unsigned long   lastinc;
  54 #endif
  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         phys_size_t     ram_size;       /* RAM size */
  61         unsigned long   reloc_off;      /* Relocation Offset */
  62         unsigned long   env_addr;       /* Address  of Environment struct */
  63         unsigned long   env_valid;      /* Checksum of Environment valid? */
  64         void            **jt;           /* jump table */
  65         char            env_buf[32];    /* buffer for getenv() before reloc. */
  66         struct arch_global_data arch;   /* architecture-specific data */
  67 } gd_t;
  68
  69 #include <asm-generic/global_data_flags.h>
  70
  71 #define DECLARE_GLOBAL_DATA_PTR     register volatile gd_t *gd asm ("k0")
  72
  73 #endif /* __ASM_GBL_DATA_H */