2 * (C) Copyright 2007 Michal Simek
3 * (C) Copyright 2004 Atmark Techno, Inc.
5 * Michal SIMEK <monstr@monstr.eu>
6 * Yasushi SHOJI <yashi@atmark-techno.com>
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
33 DECLARE_GLOBAL_DATA_PTR
;
35 const char version_string
[] = U_BOOT_VERSION
" (" __DATE__
" - " __TIME__
")";
38 extern int gpio_init (void);
41 extern int interrupts_init (void);
43 #if defined(CONFIG_CMD_NET)
44 extern int eth_init (bd_t
* bis
);
45 extern int getenv_IPaddr (char *);
49 * Begin and End of memory area for malloc(), and current "brk"
51 static ulong mem_malloc_start
;
52 static ulong mem_malloc_end
;
53 static ulong mem_malloc_brk
;
56 * The Malloc area is immediately below the monitor copy in DRAM
57 * aka CFG_MONITOR_BASE - Note there is no need for reloc_off
58 * as our monitory code is run from SDRAM
60 static void mem_malloc_init (void)
62 mem_malloc_end
= (CFG_MALLOC_BASE
+ CFG_MALLOC_LEN
);
63 mem_malloc_start
= CFG_MALLOC_BASE
;
64 mem_malloc_brk
= mem_malloc_start
;
65 memset ((void *)mem_malloc_start
, 0, mem_malloc_end
- mem_malloc_start
);
68 void *sbrk (ptrdiff_t increment
)
70 ulong old
= mem_malloc_brk
;
71 ulong
new = old
+ increment
;
73 if ((new < mem_malloc_start
) || (new > mem_malloc_end
)) {
81 * All attempts to come up with a "common" initialization sequence
82 * that works for all boards and architectures failed: some of the
83 * requirements are just _too_ different. To get rid of the resulting
84 * mess of board dependend #ifdef'ed code we now make the whole
85 * initialization sequence configurable to the user.
87 * The requirements for any new initalization function is simple: it
88 * receives a pointer to the "global data" structure as it's only
89 * argument, and returns an integer return code, where 0 means
90 * "continue" and != 0 means "fatal error, hang the system".
92 typedef int (init_fnc_t
) (void);
94 init_fnc_t
*init_sequence
[] = {
106 void board_init (void)
109 init_fnc_t
**init_fnc_ptr
;
110 gd
= (gd_t
*) CFG_GBL_DATA_OFFSET
;
111 #if defined(CONFIG_CMD_FLASH)
112 ulong flash_size
= 0;
114 asm ("nop"); /* FIXME gd is not initialize - wait */
115 memset ((void *)gd
, 0, CFG_GBL_DATA_SIZE
);
116 gd
->bd
= (bd_t
*) (gd
+ 1); /* At end of global data */
117 gd
->baudrate
= CONFIG_BAUDRATE
;
119 bd
->bi_baudrate
= CONFIG_BAUDRATE
;
120 bd
->bi_memstart
= CFG_SDRAM_BASE
;
121 bd
->bi_memsize
= CFG_SDRAM_SIZE
;
123 /* Initialise malloc() area */
126 for (init_fnc_ptr
= init_sequence
; *init_fnc_ptr
; ++init_fnc_ptr
) {
128 if ((*init_fnc_ptr
) () != 0) {
133 #if defined(CONFIG_CMD_FLASH)
134 bd
->bi_flashstart
= CFG_FLASH_BASE
;
135 if (0 < (flash_size
= flash_init ())) {
136 bd
->bi_flashsize
= flash_size
;
137 bd
->bi_flashoffset
= CFG_FLASH_BASE
+ flash_size
;
139 puts ("Flash init FAILED");
140 bd
->bi_flashstart
= 0;
141 bd
->bi_flashsize
= 0;
142 bd
->bi_flashoffset
= 0;
146 #if defined(CONFIG_CMD_NET)
149 /* board MAC address */
150 s
= getenv ("ethaddr");
151 for (i
= 0; i
< 6; ++i
) {
152 bd
->bi_enetaddr
[i
] = s
? simple_strtoul (s
, &e
, 16) : 0;
154 s
= (*e
) ? e
+ 1 : e
;
157 bd
->bi_ip_addr
= getenv_IPaddr ("ipaddr");
161 /* relocate environment function pointers etc. */
173 puts ("### ERROR ### Please RESET the board ###\n");