1 /*
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>
28 #include <stdio_dev.h>
29 #include <watchdog.h>
30 #include <malloc.h>
31 #include <mmc.h>
32 #include <net.h>
33 #ifdef CONFIG_STATUS_LED
34 #include <status_led.h>
35 #endif
36 #if defined(CONFIG_SYS_NIOS_EPCSBASE)
37 #include <nios2-epcs.h>
38 #endif
39 #ifdef CONFIG_CMD_NAND
40 #include <nand.h> /* cannot even include nand.h if it isnt configured */
41 #endif
42
43 DECLARE_GLOBAL_DATA_PTR;
44
45 /*
46 * All attempts to come up with a "common" initialization sequence
47 * that works for all boards and architectures failed: some of the
48 * requirements are just _too_ different. To get rid of the resulting
49 * mess of board dependend #ifdef'ed code we now make the whole
50 * initialization sequence configurable to the user.
51 *
52 * The requirements for any new initalization function is simple: it
53 * receives a pointer to the "global data" structure as it's only
54 * argument, and returns an integer return code, where 0 means
55 * "continue" and != 0 means "fatal error, hang the system".
56 */
57
58
59 typedef int (init_fnc_t) (void);
60
61
62 /************************************************************************
63 * Initialization sequence *
64 ***********************************************************************/
65
66 init_fnc_t *init_sequence[] = {
67
68 #if defined(CONFIG_BOARD_EARLY_INIT_F)
69 board_early_init_f, /* Call board-specific init code early.*/
70 #endif
71 #if defined(CONFIG_SYS_NIOS_EPCSBASE)
72 epcs_reset,
73 #endif
74
75 env_init,
76 serial_init,
77 console_init_f,
78 display_options,
79 checkcpu,
80 checkboard,
81 NULL, /* Terminate this list */
82 };
83
84
85 /***********************************************************************/
board_init(void)86 void board_init (void)
87 {
88 bd_t *bd;
89 init_fnc_t **init_fnc_ptr;
90
91 /* Pointer is writable since we allocated a register for it.
92 * Nios treats CONFIG_SYS_GBL_DATA_OFFSET as an address.
93 */
94 gd = (gd_t *)CONFIG_SYS_GBL_DATA_OFFSET;
95 /* compiler optimization barrier needed for GCC >= 3.4 */
96 __asm__ __volatile__("": : :"memory");
97
98 memset( gd, 0, CONFIG_SYS_GBL_DATA_SIZE );
99
100 gd->bd = (bd_t *)(gd+1); /* At end of global data */
101 gd->baudrate = CONFIG_BAUDRATE;
102 gd->cpu_clk = CONFIG_SYS_CLK_FREQ;
103
104 bd = gd->bd;
105 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
106 bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
107 #ifndef CONFIG_SYS_NO_FLASH
108 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
109 #endif
110 #if defined(CONFIG_SYS_SRAM_BASE) && defined(CONFIG_SYS_SRAM_SIZE)
111 bd->bi_sramstart= CONFIG_SYS_SRAM_BASE;
112 bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE;
113 #endif
114 bd->bi_baudrate = CONFIG_BAUDRATE;
115
116 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
117 WATCHDOG_RESET ();
118 if ((*init_fnc_ptr) () != 0) {
119 hang ();
120 }
121 }
122
123 WATCHDOG_RESET ();
124
125 /* The Malloc area is immediately below the monitor copy in RAM */
126 mem_malloc_init(CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN);
127
128 #ifndef CONFIG_SYS_NO_FLASH
129 WATCHDOG_RESET ();
130 bd->bi_flashsize = flash_init();
131 #endif
132
133 #ifdef CONFIG_CMD_NAND
134 puts("NAND: ");
135 nand_init();
136 #endif
137
138 #ifdef CONFIG_GENERIC_MMC
139 puts("MMC: ");
140 mmc_initialize(bd);
141 #endif
142
143 WATCHDOG_RESET ();
144 env_relocate();
145
146 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
147
148 WATCHDOG_RESET ();
149 stdio_init();
150 jumptable_init();
151 console_init_r();
152
153 WATCHDOG_RESET ();
154 interrupt_init ();
155
156 #if defined(CONFIG_BOARD_LATE_INIT)
157 board_late_init ();
158 #endif
159
160 #if defined(CONFIG_CMD_NET)
161 #if defined(CONFIG_NET_MULTI)
162 puts ("Net: ");
163 #endif
164 eth_initialize (bd);
165 #endif
166
167 /* main_loop */
168 for (;;) {
169 WATCHDOG_RESET ();
170 main_loop ();
171 }
172 }
173
174
175 /***********************************************************************/
176
hang(void)177 void hang (void)
178 {
179 disable_interrupts ();
180 puts("### ERROR ### Please reset board ###\n");
181 for (;;);
182 }
183