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wdenk5c952cf2004-10-10 21:27:30 +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>
wdenk5c952cf2004-10-10 21:27:30 +000029#include <watchdog.h>
Peter Tyser5e93bd12009-08-21 23:05:19 -050030#include <malloc.h>
wdenk5c952cf2004-10-10 21:27:30 +000031#include <net.h>
32#ifdef CONFIG_STATUS_LED
33#include <status_led.h>
34#endif
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020035#if defined(CONFIG_SYS_NIOS_EPCSBASE)
Scott McNutt1f6ce8f2006-06-08 12:08:12 -040036#include <nios2-epcs.h>
37#endif
wdenk5c952cf2004-10-10 21:27:30 +000038
Wolfgang Denkd87080b2006-03-31 18:32:53 +020039DECLARE_GLOBAL_DATA_PTR;
wdenk5c952cf2004-10-10 21:27:30 +000040
41/*
42 * All attempts to come up with a "common" initialization sequence
43 * that works for all boards and architectures failed: some of the
44 * requirements are just _too_ different. To get rid of the resulting
45 * mess of board dependend #ifdef'ed code we now make the whole
46 * initialization sequence configurable to the user.
47 *
48 * The requirements for any new initalization function is simple: it
49 * receives a pointer to the "global data" structure as it's only
50 * argument, and returns an integer return code, where 0 means
51 * "continue" and != 0 means "fatal error, hang the system".
52 */
53
54
55extern void malloc_bin_reloc (void);
56typedef int (init_fnc_t) (void);
57
wdenk5c952cf2004-10-10 21:27:30 +000058
59/************************************************************************
60 * Initialization sequence *
61 ***********************************************************************/
62
63init_fnc_t *init_sequence[] = {
64
65#if defined(CONFIG_BOARD_EARLY_INIT_F)
66 board_early_init_f, /* Call board-specific init code early.*/
67#endif
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020068#if defined(CONFIG_SYS_NIOS_EPCSBASE)
Scott McNutt1f6ce8f2006-06-08 12:08:12 -040069 epcs_reset,
70#endif
wdenk5c952cf2004-10-10 21:27:30 +000071
72 env_init,
73 serial_init,
74 console_init_f,
75 display_options,
76 checkcpu,
77 checkboard,
78 NULL, /* Terminate this list */
79};
80
81
82/***********************************************************************/
83void board_init (void)
84{
wdenk5c952cf2004-10-10 21:27:30 +000085 bd_t *bd;
86 init_fnc_t **init_fnc_ptr;
87 char *s, *e;
88 int i;
89
90 /* Pointer is writable since we allocated a register for it.
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020091 * Nios treats CONFIG_SYS_GBL_DATA_OFFSET as an address.
wdenk5c952cf2004-10-10 21:27:30 +000092 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020093 gd = (gd_t *)CONFIG_SYS_GBL_DATA_OFFSET;
wdenk5c952cf2004-10-10 21:27:30 +000094 /* compiler optimization barrier needed for GCC >= 3.4 */
95 __asm__ __volatile__("": : :"memory");
96
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020097 memset( gd, 0, CONFIG_SYS_GBL_DATA_SIZE );
wdenk5c952cf2004-10-10 21:27:30 +000098
99 gd->bd = (bd_t *)(gd+1); /* At end of global data */
100 gd->baudrate = CONFIG_BAUDRATE;
101 gd->cpu_clk = CONFIG_SYS_CLK_FREQ;
102
103 bd = gd->bd;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200104 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
105 bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
106 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
107#if defined(CONFIG_SYS_SRAM_BASE) && defined(CONFIG_SYS_SRAM_SIZE)
108 bd->bi_sramstart= CONFIG_SYS_SRAM_BASE;
109 bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE;
wdenk5c952cf2004-10-10 21:27:30 +0000110#endif
111 bd->bi_baudrate = CONFIG_BAUDRATE;
112
113 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
114 WATCHDOG_RESET ();
115 if ((*init_fnc_ptr) () != 0) {
116 hang ();
117 }
118 }
119
120 WATCHDOG_RESET ();
Peter Tyserd4e8ada2009-08-21 23:05:21 -0500121
122 /* The Malloc area is immediately below the monitor copy in RAM */
Peter Tysera483a162009-08-21 23:05:20 -0500123 mem_malloc_init(CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN);
Stefan Roesec790b042009-05-11 15:50:12 +0200124 malloc_bin_reloc();
125
126 WATCHDOG_RESET ();
wdenk5c952cf2004-10-10 21:27:30 +0000127 bd->bi_flashsize = flash_init();
128
129 WATCHDOG_RESET ();
wdenk5c952cf2004-10-10 21:27:30 +0000130 env_relocate();
131
132 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
wdenk5c952cf2004-10-10 21:27:30 +0000133
134 WATCHDOG_RESET ();
Jean-Christophe PLAGNIOL-VILLARD52cb4d42009-05-16 12:14:54 +0200135 stdio_init();
wdenk5c952cf2004-10-10 21:27:30 +0000136 jumptable_init();
137 console_init_r();
138
139 WATCHDOG_RESET ();
140 interrupt_init ();
141
Scott McNutt1f6ce8f2006-06-08 12:08:12 -0400142#if defined(CONFIG_BOARD_LATE_INIT)
143 board_late_init ();
144#endif
145
wdenk5c952cf2004-10-10 21:27:30 +0000146 /* main_loop */
147 for (;;) {
148 WATCHDOG_RESET ();
149 main_loop ();
150 }
151}
152
153
154/***********************************************************************/
155
156void hang (void)
157{
158 disable_interrupts ();
159 puts("### ERROR ### Please reset board ###\n");
160 for (;;);
161}