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5c952cf0 WD |
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> | |
52cb4d4f | 28 | #include <stdio_dev.h> |
5c952cf0 | 29 | #include <watchdog.h> |
5e93bd1c | 30 | #include <malloc.h> |
5c952cf0 WD |
31 | #include <net.h> |
32 | #ifdef CONFIG_STATUS_LED | |
33 | #include <status_led.h> | |
34 | #endif | |
6d0f6bcf | 35 | #if defined(CONFIG_SYS_NIOS_EPCSBASE) |
1f6ce8f5 SM |
36 | #include <nios2-epcs.h> |
37 | #endif | |
5c952cf0 | 38 | |
d87080b7 | 39 | DECLARE_GLOBAL_DATA_PTR; |
5c952cf0 WD |
40 | |
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 | ||
55 | extern void malloc_bin_reloc (void); | |
56 | typedef int (init_fnc_t) (void); | |
57 | ||
5c952cf0 WD |
58 | /* |
59 | * The Malloc area is immediately below the monitor copy in RAM | |
60 | */ | |
61 | static void mem_malloc_init (void) | |
62 | { | |
a483a167 PT |
63 | mem_malloc_start = start; |
64 | mem_malloc_end = start + size; | |
65 | mem_malloc_brk = start | |
66 | ||
67 | memset((void *)mem_malloc_start, 0, size); | |
5c952cf0 WD |
68 | } |
69 | ||
5c952cf0 WD |
70 | |
71 | /************************************************************************ | |
72 | * Initialization sequence * | |
73 | ***********************************************************************/ | |
74 | ||
75 | init_fnc_t *init_sequence[] = { | |
76 | ||
77 | #if defined(CONFIG_BOARD_EARLY_INIT_F) | |
78 | board_early_init_f, /* Call board-specific init code early.*/ | |
79 | #endif | |
6d0f6bcf | 80 | #if defined(CONFIG_SYS_NIOS_EPCSBASE) |
1f6ce8f5 SM |
81 | epcs_reset, |
82 | #endif | |
5c952cf0 WD |
83 | |
84 | env_init, | |
85 | serial_init, | |
86 | console_init_f, | |
87 | display_options, | |
88 | checkcpu, | |
89 | checkboard, | |
90 | NULL, /* Terminate this list */ | |
91 | }; | |
92 | ||
93 | ||
94 | /***********************************************************************/ | |
95 | void board_init (void) | |
96 | { | |
5c952cf0 WD |
97 | bd_t *bd; |
98 | init_fnc_t **init_fnc_ptr; | |
99 | char *s, *e; | |
100 | int i; | |
101 | ||
102 | /* Pointer is writable since we allocated a register for it. | |
6d0f6bcf | 103 | * Nios treats CONFIG_SYS_GBL_DATA_OFFSET as an address. |
5c952cf0 | 104 | */ |
6d0f6bcf | 105 | gd = (gd_t *)CONFIG_SYS_GBL_DATA_OFFSET; |
5c952cf0 WD |
106 | /* compiler optimization barrier needed for GCC >= 3.4 */ |
107 | __asm__ __volatile__("": : :"memory"); | |
108 | ||
6d0f6bcf | 109 | memset( gd, 0, CONFIG_SYS_GBL_DATA_SIZE ); |
5c952cf0 WD |
110 | |
111 | gd->bd = (bd_t *)(gd+1); /* At end of global data */ | |
112 | gd->baudrate = CONFIG_BAUDRATE; | |
113 | gd->cpu_clk = CONFIG_SYS_CLK_FREQ; | |
114 | ||
115 | bd = gd->bd; | |
6d0f6bcf JCPV |
116 | bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; |
117 | bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE; | |
118 | bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; | |
119 | #if defined(CONFIG_SYS_SRAM_BASE) && defined(CONFIG_SYS_SRAM_SIZE) | |
120 | bd->bi_sramstart= CONFIG_SYS_SRAM_BASE; | |
121 | bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; | |
5c952cf0 WD |
122 | #endif |
123 | bd->bi_baudrate = CONFIG_BAUDRATE; | |
124 | ||
125 | for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) { | |
126 | WATCHDOG_RESET (); | |
127 | if ((*init_fnc_ptr) () != 0) { | |
128 | hang (); | |
129 | } | |
130 | } | |
131 | ||
c790b04d | 132 | WATCHDOG_RESET (); |
a483a167 | 133 | mem_malloc_init(CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN); |
c790b04d SR |
134 | malloc_bin_reloc(); |
135 | ||
5c952cf0 WD |
136 | WATCHDOG_RESET (); |
137 | bd->bi_flashsize = flash_init(); | |
138 | ||
139 | WATCHDOG_RESET (); | |
5c952cf0 WD |
140 | env_relocate(); |
141 | ||
142 | bd->bi_ip_addr = getenv_IPaddr ("ipaddr"); | |
5c952cf0 WD |
143 | |
144 | WATCHDOG_RESET (); | |
52cb4d4f | 145 | stdio_init(); |
5c952cf0 WD |
146 | jumptable_init(); |
147 | console_init_r(); | |
148 | ||
149 | WATCHDOG_RESET (); | |
150 | interrupt_init (); | |
151 | ||
1f6ce8f5 SM |
152 | #if defined(CONFIG_BOARD_LATE_INIT) |
153 | board_late_init (); | |
154 | #endif | |
155 | ||
5c952cf0 WD |
156 | /* main_loop */ |
157 | for (;;) { | |
158 | WATCHDOG_RESET (); | |
159 | main_loop (); | |
160 | } | |
161 | } | |
162 | ||
163 | ||
164 | /***********************************************************************/ | |
165 | ||
166 | void hang (void) | |
167 | { | |
168 | disable_interrupts (); | |
169 | puts("### ERROR ### Please reset board ###\n"); | |
170 | for (;;); | |
171 | } |