2 * (C) Copyright 2002-2010
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
24 #ifndef __ASM_GBL_DATA_H
25 #define __ASM_GBL_DATA_H
27 * The following data structure is placed in some memory wich is
28 * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
29 * some locked parts of the data cache) to allow for a minimum set of
30 * global variables during system initialization (until we have set
31 * up the memory controller so that we can use RAM).
36 #include <asm/u-boot.h>
38 typedef struct global_data gd_t;
41 /* NOTE: gd_addr MUST be first member of struct global_data! */
42 gd_t *gd_addr; /* Location of Global Data */
45 unsigned int baudrate;
46 unsigned long have_console; /* serial_init() was called */
47 #ifdef CONFIG_PRE_CONSOLE_BUFFER
48 unsigned long precon_buf_idx; /* Pre-Console buffer index */
50 unsigned long reloc_off; /* Relocation Offset */
51 unsigned long load_off; /* Load Offset */
52 unsigned long env_addr; /* Address of Environment struct */
53 unsigned long env_valid; /* Checksum of Environment valid? */
54 unsigned long cpu_clk; /* CPU clock in Hz! */
55 unsigned long bus_clk;
56 unsigned long relocaddr; /* Start address of U-Boot in RAM */
57 unsigned long start_addr_sp; /* start_addr_stackpointer */
58 unsigned long gdt_addr; /* Location of GDT */
59 phys_size_t ram_size; /* RAM size */
60 unsigned long reset_status; /* reset status register at boot */
61 const void *fdt_blob; /* Our device tree, NULL if none */
62 void **jt; /* jump table */
63 char env_buf[32]; /* buffer for getenv() before reloc. */
66 static inline gd_t *get_fs_gd_ptr(void)
70 asm volatile("fs movl 0, %0\n" : "=r" (gd_ptr));
75 #define gd get_fs_gd_ptr()
79 #include <asm-generic/global_data_flags.h>
82 * Our private Global Data Flags
84 #define GD_FLG_COLD_BOOT 0x00100 /* Cold Boot */
85 #define GD_FLG_WARM_BOOT 0x00200 /* Warm Boot */
87 #define DECLARE_GLOBAL_DATA_PTR
89 #endif /* __ASM_GBL_DATA_H */