include/asm-ppc/global_data.h

   1 /*
   2  * (C) Copyright 2002
   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/types.h"
  28
  29 /*
  30  * The following data structure is placed in some memory wich is
  31  * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
  32  * some locked parts of the data cache) to allow for a minimum set of
  33  * global variables during system initialization (until we have set
  34  * up the memory controller so that we can use RAM).
  35  *
  36  * Keep it *SMALL* and remember to set CFG_GBL_DATA_SIZE > sizeof(gd_t)
  37  */
  38
  39 typedef struct  global_data {
  40         bd_t            *bd;
  41         unsigned long   flags;
  42         unsigned long   baudrate;
  43         unsigned long   cpu_clk;        /* CPU clock in Hz!             */
  44         unsigned long   bus_clk;
  45 #if defined(CONFIG_CPM2)
  46         /* There are many clocks on the MPC8260 - see page 9-5 */
  47         unsigned long   vco_out;
  48         unsigned long   cpm_clk;
  49         unsigned long   scc_clk;
  50         unsigned long   brg_clk;
  51 #endif
  52 #if defined(CONFIG_MPC83XX)
  53         /* There are other clocks in the MPC83XX */
  54         u32 csb_clk;
  55         u32 tsec1_clk;
  56         u32 tsec2_clk;
  57         u32 core_clk;
  58         u32 usbmph_clk;
  59         u32 usbdr_clk;
  60         u32 i2c_clk;
  61         u32 enc_clk;
  62         u32 lbiu_clk;
  63         u32 lclk_clk;
  64         u32 ddr_clk;
  65 #endif
  66 #if defined(CONFIG_MPC5xxx)
  67         unsigned long   ipb_clk;
  68         unsigned long   pci_clk;
  69 #endif
  70 #if defined(CONFIG_MPC8220)
  71         unsigned long   bExtUart;
  72         unsigned long   inp_clk;
  73         unsigned long   pci_clk;
  74         unsigned long   vco_clk;
  75         unsigned long   pev_clk;
  76         unsigned long   flb_clk;
  77 #endif
  78         unsigned long   ram_size;       /* RAM size */
  79         unsigned long   reloc_off;      /* Relocation Offset */
  80         unsigned long   reset_status;   /* reset status register at boot        */
  81         unsigned long   env_addr;       /* Address  of Environment struct       */
  82         unsigned long   env_valid;      /* Checksum of Environment valid?       */
  83         unsigned long   have_console;   /* serial_init() was called             */
  84 #if defined(CFG_ALLOC_DPRAM) || defined(CONFIG_CPM2)
  85         unsigned int    dp_alloc_base;
  86         unsigned int    dp_alloc_top;
  87 #endif
  88 #if defined(CFG_GT_6426x)
  89         unsigned int    mirror_hack[16];
  90 #endif
  91 #if defined(CONFIG_A3000)       || \
  92     defined(CONFIG_HIDDEN_DRAGON)  || \
  93     defined(CONFIG_MUSENKI)     ||  \
  94     defined(CONFIG_SANDPOINT)
  95         void *          console_addr;
  96 #endif
  97 #ifdef CONFIG_AMIGAONEG3SE
  98         unsigned long   relocaddr;      /* Start address of U-Boot in RAM */
  99 #endif
 100 #if defined(CONFIG_LCD) || defined(CONFIG_VIDEO)
 101         unsigned long   fb_base;        /* Base address of framebuffer memory   */
 102 #endif
 103 #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
 104         unsigned long   post_log_word;  /* Record POST activities */
 105         unsigned long   post_init_f_time;  /* When post_init_f started */
 106 #endif
 107 #ifdef CONFIG_BOARD_TYPES
 108         unsigned long   board_type;
 109 #endif
 110 #ifdef CONFIG_MODEM_SUPPORT
 111         unsigned long do_mdm_init;
 112         unsigned long be_quiet;
 113 #endif
 114 #ifdef CONFIG_LWMON
 115         unsigned long kbd_status;
 116 #endif
 117         void            **jt;           /* jump table */
 118 } gd_t;
 119
 120 /*
 121  * Global Data Flags
 122  */
 123 #define GD_FLG_RELOC    0x00001         /* Code was relocated to RAM            */
 124 #define GD_FLG_DEVINIT  0x00002         /* Devices have been initialized        */
 125 #define GD_FLG_SILENT   0x00004         /* Silent mode                          */
 126
 127 #if 1
 128 #define DECLARE_GLOBAL_DATA_PTR     register volatile gd_t *gd asm ("r29")
 129 #else /* We could use plain global data, but the resulting code is bigger */
 130 #define XTRN_DECLARE_GLOBAL_DATA_PTR    extern
 131 #define DECLARE_GLOBAL_DATA_PTR     XTRN_DECLARE_GLOBAL_DATA_PTR \
 132                                     gd_t *gd
 133 #endif
 134
 135 #endif /* __ASM_GBL_DATA_H */