2 * (C) Copyright 2003, Psyent Corporation <www.psyent.com>
3 * Scott McNutt <smcnutt@psyent.com>
5 * (C) Copyright 2000-2002
6 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
8 * See file CREDITS for list of people who contributed to this
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.
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.
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,
28 #include <stdio_dev.h>
32 #ifdef CONFIG_STATUS_LED
33 #include <status_led.h>
36 DECLARE_GLOBAL_DATA_PTR;
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.
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".
52 extern void malloc_bin_reloc (void);
53 typedef int (init_fnc_t) (void);
56 /************************************************************************
57 * Initialization sequence *
58 ***********************************************************************/
60 init_fnc_t *init_sequence[] = {
62 #if defined(CONFIG_BOARD_EARLY_INIT_F)
63 board_early_init_f, /* Call board-specific init code early.*/
72 NULL, /* Terminate this list */
76 /***********************************************************************/
77 void board_init (void)
80 init_fnc_t **init_fnc_ptr;
84 /* Pointer is writable since we allocated a register for it.
85 * Nios treats CONFIG_SYS_GBL_DATA_OFFSET as an address.
87 gd = (gd_t *)CONFIG_SYS_GBL_DATA_OFFSET;
88 /* compiler optimization barrier needed for GCC >= 3.4 */
89 __asm__ __volatile__("": : :"memory");
91 memset( gd, 0, CONFIG_SYS_GBL_DATA_SIZE );
93 gd->bd = (bd_t *)(gd+1); /* At end of global data */
94 gd->baudrate = CONFIG_BAUDRATE;
95 gd->cpu_clk = CONFIG_SYS_CLK_FREQ;
98 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
99 bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
100 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
101 #if defined(CONFIG_SYS_SRAM_BASE) && defined(CONFIG_SYS_SRAM_SIZE)
102 bd->bi_sramstart= CONFIG_SYS_SRAM_BASE;
103 bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE;
105 bd->bi_baudrate = CONFIG_BAUDRATE;
107 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
109 if ((*init_fnc_ptr) () != 0) {
116 /* The Malloc area is immediately below the monitor copy in RAM */
117 mem_malloc_init(CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN);
121 bd->bi_flashsize = flash_init();
126 bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
138 #ifdef CONFIG_STATUS_LED
139 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
150 /***********************************************************************/
154 #ifdef CONFIG_STATUS_LED
155 status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF);
156 status_led_set(STATUS_LED_RED, STATUS_LED_BLINKING);
158 puts("### ERROR ### Please reset board ###\n");
162 unsigned long do_go_exec (ulong (*entry)(int, char *[]), int argc, char *argv[])
165 * x86 does not use a dedicated register to pass the pointer
168 argv[-1] = (char *)gd;
169 return entry (argc, argv);