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wdenk507bbe32004-04-18 21:13:41 +00001/*
Michal Simekcfc67112007-03-11 13:48:24 +01002 * (C) Copyright 2007 Michal Simek
wdenk507bbe32004-04-18 21:13:41 +00003 * (C) Copyright 2004 Atmark Techno, Inc.
4 *
Michal Simekcfc67112007-03-11 13:48:24 +01005 * Michal SIMEK <monstr@monstr.eu>
wdenk507bbe32004-04-18 21:13:41 +00006 * Yasushi SHOJI <yashi@atmark-techno.com>
7 *
8 * See file CREDITS for list of people who contributed to this
9 * project.
10 *
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.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
Michal Simekcfc67112007-03-11 13:48:24 +010018 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
wdenk507bbe32004-04-18 21:13:41 +000019 * GNU General Public License for more details.
20 *
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,
24 * MA 02111-1307 USA
25 */
26
27#include <common.h>
28#include <command.h>
29#include <malloc.h>
Peter Tyser561858e2008-11-03 09:30:59 -060030#include <timestamp.h>
wdenk507bbe32004-04-18 21:13:41 +000031#include <version.h>
wdenk7abf0c52004-04-18 21:45:42 +000032#include <watchdog.h>
wdenk507bbe32004-04-18 21:13:41 +000033
Wolfgang Denkd87080b2006-03-31 18:32:53 +020034DECLARE_GLOBAL_DATA_PTR;
35
Peter Tyser561858e2008-11-03 09:30:59 -060036const char version_string[] = U_BOOT_VERSION " ("U_BOOT_DATE" - "U_BOOT_TIME")";
Michal Simekcfc67112007-03-11 13:48:24 +010037
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020038#ifdef CONFIG_SYS_GPIO_0
Michal Simekcfc67112007-03-11 13:48:24 +010039extern int gpio_init (void);
40#endif
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020041#ifdef CONFIG_SYS_INTC_0
Michal Simekcfc67112007-03-11 13:48:24 +010042extern int interrupts_init (void);
43#endif
Jon Loeliger7def6b32007-07-09 18:02:11 -050044#if defined(CONFIG_CMD_NET)
Michal Simekcfc67112007-03-11 13:48:24 +010045extern int eth_init (bd_t * bis);
46extern int getenv_IPaddr (char *);
47#endif
wdenk507bbe32004-04-18 21:13:41 +000048
49/*
50 * Begin and End of memory area for malloc(), and current "brk"
51 */
52static ulong mem_malloc_start;
53static ulong mem_malloc_end;
54static ulong mem_malloc_brk;
55
Michal Simekcfc67112007-03-11 13:48:24 +010056/*
57 * The Malloc area is immediately below the monitor copy in DRAM
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020058 * aka CONFIG_SYS_MONITOR_BASE - Note there is no need for reloc_off
Michal Simekcfc67112007-03-11 13:48:24 +010059 * as our monitory code is run from SDRAM
60 */
61static void mem_malloc_init (void)
62{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020063 mem_malloc_end = (CONFIG_SYS_MALLOC_BASE + CONFIG_SYS_MALLOC_LEN);
64 mem_malloc_start = CONFIG_SYS_MALLOC_BASE;
Michal Simekcfc67112007-03-11 13:48:24 +010065 mem_malloc_brk = mem_malloc_start;
66 memset ((void *)mem_malloc_start, 0, mem_malloc_end - mem_malloc_start);
67}
wdenk507bbe32004-04-18 21:13:41 +000068
69void *sbrk (ptrdiff_t increment)
70{
71 ulong old = mem_malloc_brk;
72 ulong new = old + increment;
73
74 if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
75 return (NULL);
76 }
77 mem_malloc_brk = new;
Michal Simekcfc67112007-03-11 13:48:24 +010078 return ((void *)old);
wdenk507bbe32004-04-18 21:13:41 +000079}
80
81/*
82 * All attempts to come up with a "common" initialization sequence
83 * that works for all boards and architectures failed: some of the
84 * requirements are just _too_ different. To get rid of the resulting
85 * mess of board dependend #ifdef'ed code we now make the whole
86 * initialization sequence configurable to the user.
87 *
88 * The requirements for any new initalization function is simple: it
89 * receives a pointer to the "global data" structure as it's only
90 * argument, and returns an integer return code, where 0 means
91 * "continue" and != 0 means "fatal error, hang the system".
92 */
93typedef int (init_fnc_t) (void);
94
95init_fnc_t *init_sequence[] = {
Michal Simekcfc67112007-03-11 13:48:24 +010096 env_init,
97 serial_init,
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020098#ifdef CONFIG_SYS_GPIO_0
Michal Simekcfc67112007-03-11 13:48:24 +010099 gpio_init,
100#endif
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200101#ifdef CONFIG_SYS_INTC_0
Michal Simekcfc67112007-03-11 13:48:24 +0100102 interrupts_init,
103#endif
wdenk507bbe32004-04-18 21:13:41 +0000104 NULL,
105};
106
Michal Simekcfc67112007-03-11 13:48:24 +0100107void board_init (void)
wdenk7abf0c52004-04-18 21:45:42 +0000108{
wdenk857cad32004-07-10 23:48:41 +0000109 bd_t *bd;
wdenk7abf0c52004-04-18 21:45:42 +0000110 init_fnc_t **init_fnc_ptr;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200111 gd = (gd_t *) CONFIG_SYS_GBL_DATA_OFFSET;
Jon Loeliger7def6b32007-07-09 18:02:11 -0500112#if defined(CONFIG_CMD_FLASH)
Michal Simekcfc67112007-03-11 13:48:24 +0100113 ulong flash_size = 0;
114#endif
115 asm ("nop"); /* FIXME gd is not initialize - wait */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200116 memset ((void *)gd, 0, CONFIG_SYS_GBL_DATA_SIZE);
Michal Simekcfc67112007-03-11 13:48:24 +0100117 gd->bd = (bd_t *) (gd + 1); /* At end of global data */
wdenk857cad32004-07-10 23:48:41 +0000118 gd->baudrate = CONFIG_BAUDRATE;
wdenk857cad32004-07-10 23:48:41 +0000119 bd = gd->bd;
120 bd->bi_baudrate = CONFIG_BAUDRATE;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200121 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
122 bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
Michal Simekc85ff052008-11-24 11:38:22 +0100123 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
Michal Simekcfc67112007-03-11 13:48:24 +0100124
125 /* Initialise malloc() area */
126 mem_malloc_init ();
wdenk857cad32004-07-10 23:48:41 +0000127
wdenk7abf0c52004-04-18 21:45:42 +0000128 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
129 WATCHDOG_RESET ();
130 if ((*init_fnc_ptr) () != 0) {
131 hang ();
132 }
133 }
134
Jon Loeliger7def6b32007-07-09 18:02:11 -0500135#if defined(CONFIG_CMD_FLASH)
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200136 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
Michal Simekcfc67112007-03-11 13:48:24 +0100137 if (0 < (flash_size = flash_init ())) {
138 bd->bi_flashsize = flash_size;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200139 bd->bi_flashoffset = CONFIG_SYS_FLASH_BASE + flash_size;
Michal Simekcfc67112007-03-11 13:48:24 +0100140 } else {
141 puts ("Flash init FAILED");
142 bd->bi_flashstart = 0;
143 bd->bi_flashsize = 0;
144 bd->bi_flashoffset = 0;
145 }
146#endif
147
Jon Loeliger7def6b32007-07-09 18:02:11 -0500148#if defined(CONFIG_CMD_NET)
Michal Simekcfc67112007-03-11 13:48:24 +0100149 char *s, *e;
150 int i;
151 /* board MAC address */
152 s = getenv ("ethaddr");
153 for (i = 0; i < 6; ++i) {
154 bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
155 if (s)
156 s = (*e) ? e + 1 : e;
157 }
158 /* IP Address */
159 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
160 eth_init (bd);
161#endif
162
163 /* relocate environment function pointers etc. */
164 env_relocate ();
165
wdenk7abf0c52004-04-18 21:45:42 +0000166 /* main_loop */
167 for (;;) {
168 WATCHDOG_RESET ();
169 main_loop ();
170 }
171}
172
wdenk507bbe32004-04-18 21:13:41 +0000173void hang (void)
174{
175 puts ("### ERROR ### Please RESET the board ###\n");
Michal Simekcfc67112007-03-11 13:48:24 +0100176 for (;;) ;
wdenk507bbe32004-04-18 21:13:41 +0000177}