2 * (C) Copyright 2004 Atmark Techno, Inc.
4 * Yasushi SHOJI <yashi@atmark-techno.com>
6 * See file CREDITS for list of people who contributed to this
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
30 const char version_string[] =
31 U_BOOT_VERSION" (" __DATE__ " - " __TIME__ ")";
34 * Begin and End of memory area for malloc(), and current "brk"
36 static ulong mem_malloc_start;
37 static ulong mem_malloc_end;
38 static ulong mem_malloc_brk;
41 void *sbrk (ptrdiff_t increment)
43 ulong old = mem_malloc_brk;
44 ulong new = old + increment;
46 if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
50 return ((void *) old);
54 * All attempts to come up with a "common" initialization sequence
55 * that works for all boards and architectures failed: some of the
56 * requirements are just _too_ different. To get rid of the resulting
57 * mess of board dependend #ifdef'ed code we now make the whole
58 * initialization sequence configurable to the user.
60 * The requirements for any new initalization function is simple: it
61 * receives a pointer to the "global data" structure as it's only
62 * argument, and returns an integer return code, where 0 means
63 * "continue" and != 0 means "fatal error, hang the system".
65 typedef int (init_fnc_t) (void);
67 init_fnc_t *init_sequence[] = {
68 serial_init, /* serial communications setup */
74 puts ("### ERROR ### Please RESET the board ###\n");