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 #include <asm/regdef.h>
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).
36 * Keep it *SMALL* and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t)
39 typedef struct global_data {
43 /* There are other clocks in the jz4740 */
44 unsigned long cpu_clk; /* CPU core clock */
45 unsigned long sys_clk; /* System bus clock */
46 unsigned long per_clk; /* Peripheral bus clock */
47 unsigned long mem_clk; /* Memory bus clock */
48 unsigned long dev_clk; /* Device clock */
49 /* "static data" needed by most of timer.c */
51 unsigned long lastinc;
53 unsigned long baudrate;
54 unsigned long have_console; /* serial_init() was called */
55 #ifdef CONFIG_PRE_CONSOLE_BUFFER
56 unsigned long precon_buf_idx; /* Pre-Console buffer index */
58 phys_size_t ram_size; /* RAM size */
59 unsigned long reloc_off; /* Relocation Offset */
60 unsigned long env_addr; /* Address of Environment struct */
61 unsigned long env_valid; /* Checksum of Environment valid? */
62 void **jt; /* jump table */
63 char env_buf[32]; /* buffer for getenv() before reloc. */
69 #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */
70 #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */
71 #define GD_FLG_SILENT 0x00004 /* Silent mode */
72 #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */
73 #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */
74 #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */
75 #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */
76 #define GD_FLG_ENV_READY 0x00080 /* Environment imported into hash table */
78 #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("k0")
80 #endif /* __ASM_GBL_DATA_H */