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 which 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).
33 * Keep it *SMALL* and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t)
36 typedef struct global_data {
39 unsigned long baudrate;
40 unsigned long have_console; /* serial_init() was called */
41 #ifdef CONFIG_PRE_CONSOLE_BUFFER
42 unsigned long precon_buf_idx; /* Pre-Console buffer index */
44 unsigned long env_addr; /* Address of Environment struct */
45 unsigned long env_valid; /* Checksum of Environment valid? */
46 unsigned long fb_base; /* base address of frame buffer */
47 #ifdef CONFIG_FSL_ESDHC
48 unsigned long sdhc_clk;
50 #ifdef CONFIG_AT91FAMILY
51 /* "static data" needed by at91's clock.c */
52 unsigned long cpu_clk_rate_hz;
53 unsigned long main_clk_rate_hz;
54 unsigned long mck_rate_hz;
55 unsigned long plla_rate_hz;
56 unsigned long pllb_rate_hz;
57 unsigned long at91_pllb_usb_init;
60 /* "static data" needed by most of timer.c on ARM platforms */
61 unsigned long timer_rate_hz;
64 unsigned long long timer_reset_value;
65 unsigned long lastinc;
68 unsigned long timestamp;
70 unsigned long relocaddr; /* Start address of U-Boot in RAM */
71 phys_size_t ram_size; /* RAM size */
72 unsigned long mon_len; /* monitor len */
73 unsigned long irq_sp; /* irq stack pointer */
74 unsigned long start_addr_sp; /* start_addr_stackpointer */
75 unsigned long reloc_off;
76 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
77 unsigned long tlb_addr;
79 const void *fdt_blob; /* Our device tree, NULL if none */
80 void **jt; /* jump table */
81 char env_buf[32]; /* buffer for getenv() before reloc. */
82 #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
83 unsigned long post_log_word; /* Record POST activities */
84 unsigned long post_log_res; /* success of POST test */
85 unsigned long post_init_f_time; /* When post_init_f started */
92 #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */
93 #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */
94 #define GD_FLG_SILENT 0x00004 /* Silent mode */
95 #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */
96 #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */
97 #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */
98 #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */
99 #define GD_FLG_ENV_READY 0x00080 /* Environment imported into hash table */
101 #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("r8")
103 #endif /* __ASM_GBL_DATA_H */