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* (C) Copyright 2002-2010
* Wolfgang Denk, DENX Software Engineering,
* See file CREDITS for list of people who contributed to this
* project.
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
#ifndef __ASM_GBL_DATA_H
#define __ASM_GBL_DATA_H
* The following data structure is placed in some memory wich is
* available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
* some locked parts of the data cache) to allow for a minimum set of
* global variables during system initialization (until we have set
* up the memory controller so that we can use RAM).
#ifndef __ASSEMBLY__
#include <asm/u-boot.h>
typedef struct global_data gd_t;
struct global_data {
/* NOTE: gd_addr MUST be first member of struct global_data! */
gd_t *gd_addr; /* Location of Global Data */
bd_t *bd;
unsigned long flags;
unsigned int baudrate;
unsigned long have_console; /* serial_init() was called */
unsigned long precon_buf_idx; /* Pre-Console buffer index */
unsigned long reloc_off; /* Relocation Offset */
unsigned long load_off; /* Load Offset */
unsigned long env_addr; /* Address of Environment struct */
unsigned long env_valid; /* Checksum of Environment valid? */
unsigned long cpu_clk; /* CPU clock in Hz! */
unsigned long bus_clk;
unsigned long relocaddr; /* Start address of U-Boot in RAM */
unsigned long start_addr_sp; /* start_addr_stackpointer */
unsigned long gdt_addr; /* Location of GDT */
phys_size_t ram_size; /* RAM size */
unsigned long reset_status; /* reset status register at boot */
const void *fdt_blob; /* Our device tree, NULL if none */
void **jt; /* jump table */
char env_buf[32]; /* buffer for getenv() before reloc. */
static inline gd_t *get_fs_gd_ptr(void)
gd_t *gd_ptr;
asm volatile("fs movl 0, %0\n" : "=r" (gd_ptr));
return gd_ptr;
#define gd get_fs_gd_ptr()
#include <asm-generic/global_data_flags.h>
* Our private Global Data Flags
#define GD_FLG_COLD_BOOT 0x00100 /* Cold Boot */
#define GD_FLG_WARM_BOOT 0x00200 /* Warm Boot */
#endif /* __ASM_GBL_DATA_H */