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wdenk4a551702003-10-08 23:26:14 +00001/*
2 * (C) Copyright 2003, Psyent Corporation <www.psyent.com>
3 * Scott McNutt <smcnutt@psyent.com>
4 *
5 * (C) Copyright 2000-2002
6 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * 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>
Jean-Christophe PLAGNIOL-VILLARD52cb4d42009-05-16 12:14:54 +020028#include <stdio_dev.h>
wdenk4a551702003-10-08 23:26:14 +000029#include <watchdog.h>
Peter Tyser5e93bd12009-08-21 23:05:19 -050030#include <malloc.h>
wdenka3ad8e22003-10-19 23:22:11 +000031#include <net.h>
wdenkc935d3b2004-01-03 19:43:48 +000032#ifdef CONFIG_STATUS_LED
33#include <status_led.h>
34#endif
wdenk4a551702003-10-08 23:26:14 +000035
Wolfgang Denkd87080b2006-03-31 18:32:53 +020036DECLARE_GLOBAL_DATA_PTR;
wdenk4a551702003-10-08 23:26:14 +000037
38/*
39 * All attempts to come up with a "common" initialization sequence
40 * that works for all boards and architectures failed: some of the
41 * requirements are just _too_ different. To get rid of the resulting
42 * mess of board dependend #ifdef'ed code we now make the whole
43 * initialization sequence configurable to the user.
44 *
45 * The requirements for any new initalization function is simple: it
46 * receives a pointer to the "global data" structure as it's only
47 * argument, and returns an integer return code, where 0 means
48 * "continue" and != 0 means "fatal error, hang the system".
49 */
50
51
52extern void malloc_bin_reloc (void);
53typedef int (init_fnc_t) (void);
wdenk4a551702003-10-08 23:26:14 +000054
55/*
wdenk4a551702003-10-08 23:26:14 +000056 * The Malloc area is immediately below the monitor copy in RAM
57 */
Peter Tysera483a162009-08-21 23:05:20 -050058static void mem_malloc_init(ulong start, ulong size)
wdenk4a551702003-10-08 23:26:14 +000059{
Peter Tysera483a162009-08-21 23:05:20 -050060 mem_malloc_start = start;
61 mem_malloc_end = start + size;
62 mem_malloc_brk = start;
63
64 memset ((void *)mem_malloc_start, 0, size);
wdenk4a551702003-10-08 23:26:14 +000065}
66
wdenk4a551702003-10-08 23:26:14 +000067
68/************************************************************************
69 * Initialization sequence *
70 ***********************************************************************/
71
72init_fnc_t *init_sequence[] = {
73
wdenkc837dcb2004-01-20 23:12:12 +000074#if defined(CONFIG_BOARD_EARLY_INIT_F)
75 board_early_init_f, /* Call board-specific init code early.*/
wdenk4a551702003-10-08 23:26:14 +000076#endif
77
78 env_init,
79 serial_init,
80 console_init_f,
81 display_options,
82 checkcpu,
83 checkboard,
84 NULL, /* Terminate this list */
85};
86
87
88/***********************************************************************/
89void board_init (void)
90{
wdenk4a551702003-10-08 23:26:14 +000091 bd_t *bd;
92 init_fnc_t **init_fnc_ptr;
wdenka3ad8e22003-10-19 23:22:11 +000093 char *s, *e;
94 int i;
wdenk4a551702003-10-08 23:26:14 +000095
96 /* Pointer is writable since we allocated a register for it.
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020097 * Nios treats CONFIG_SYS_GBL_DATA_OFFSET as an address.
wdenk4a551702003-10-08 23:26:14 +000098 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020099 gd = (gd_t *)CONFIG_SYS_GBL_DATA_OFFSET;
wdenk93f6a672004-07-01 20:28:03 +0000100 /* compiler optimization barrier needed for GCC >= 3.4 */
101 __asm__ __volatile__("": : :"memory");
102
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200103 memset( gd, 0, CONFIG_SYS_GBL_DATA_SIZE );
wdenk4a551702003-10-08 23:26:14 +0000104
wdenk4a551702003-10-08 23:26:14 +0000105 gd->bd = (bd_t *)(gd+1); /* At end of global data */
106 gd->baudrate = CONFIG_BAUDRATE;
107 gd->cpu_clk = CONFIG_SYS_CLK_FREQ;
108
109 bd = gd->bd;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200110 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
111 bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
112 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
113#if defined(CONFIG_SYS_SRAM_BASE) && defined(CONFIG_SYS_SRAM_SIZE)
114 bd->bi_sramstart= CONFIG_SYS_SRAM_BASE;
115 bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE;
wdenkec4c5442004-02-09 23:12:24 +0000116#endif
wdenk4a551702003-10-08 23:26:14 +0000117 bd->bi_baudrate = CONFIG_BAUDRATE;
118
119 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
wdenk028ab6b2004-02-23 23:54:43 +0000120 WATCHDOG_RESET ();
wdenk4a551702003-10-08 23:26:14 +0000121 if ((*init_fnc_ptr) () != 0) {
122 hang ();
123 }
124 }
125
wdenk028ab6b2004-02-23 23:54:43 +0000126 WATCHDOG_RESET ();
Peter Tysera483a162009-08-21 23:05:20 -0500127 mem_malloc_init(CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN);
Stefan Roesec790b042009-05-11 15:50:12 +0200128 malloc_bin_reloc();
129
130 WATCHDOG_RESET ();
wdenk4a551702003-10-08 23:26:14 +0000131 bd->bi_flashsize = flash_init();
132
wdenk028ab6b2004-02-23 23:54:43 +0000133 WATCHDOG_RESET ();
wdenk4a551702003-10-08 23:26:14 +0000134 env_relocate();
135
wdenka0f2fe52003-10-28 09:14:21 +0000136 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
wdenka0f2fe52003-10-28 09:14:21 +0000137
wdenk028ab6b2004-02-23 23:54:43 +0000138 WATCHDOG_RESET ();
Jean-Christophe PLAGNIOL-VILLARD52cb4d42009-05-16 12:14:54 +0200139 stdio_init();
wdenk4a551702003-10-08 23:26:14 +0000140 jumptable_init();
141 console_init_r();
142 /*
143 */
144
wdenk028ab6b2004-02-23 23:54:43 +0000145 WATCHDOG_RESET ();
wdenk4a551702003-10-08 23:26:14 +0000146 interrupt_init ();
wdenkc935d3b2004-01-03 19:43:48 +0000147
148#ifdef CONFIG_STATUS_LED
149 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
150#endif
151
wdenk4a551702003-10-08 23:26:14 +0000152 /* main_loop */
153 for (;;) {
154 WATCHDOG_RESET ();
155 main_loop ();
156 }
157}
158
159
160/***********************************************************************/
161
162void hang (void)
163{
wdenkc935d3b2004-01-03 19:43:48 +0000164#ifdef CONFIG_STATUS_LED
165 status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF);
166 status_led_set(STATUS_LED_RED, STATUS_LED_BLINKING);
167#endif
wdenk4a551702003-10-08 23:26:14 +0000168 puts("### ERROR ### Please reset board ###\n");
169 for (;;);
170}
Mike Frysingera4986452008-04-13 19:42:19 -0400171
172unsigned long do_go_exec (ulong (*entry)(int, char *[]), int argc, char *argv[])
173{
174 /*
175 * x86 does not use a dedicated register to pass the pointer
176 * to the global_data
177 */
178 argv[-1] = (char *)gd;
179 return entry (argc, argv);
180}