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4a551709 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> |
4a551709 | 29 | #include <watchdog.h> |
5e93bd1c | 30 | #include <malloc.h> |
a3ad8e26 | 31 | #include <net.h> |
c935d3bd WD |
32 | #ifdef CONFIG_STATUS_LED |
33 | #include <status_led.h> | |
34 | #endif | |
4a551709 | 35 | |
d87080b7 | 36 | DECLARE_GLOBAL_DATA_PTR; |
4a551709 WD |
37 | |
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 | ||
4a551709 | 52 | typedef int (init_fnc_t) (void); |
4a551709 | 53 | |
4a551709 WD |
54 | |
55 | /************************************************************************ | |
56 | * Initialization sequence * | |
57 | ***********************************************************************/ | |
58 | ||
59 | init_fnc_t *init_sequence[] = { | |
60 | ||
c837dcb1 WD |
61 | #if defined(CONFIG_BOARD_EARLY_INIT_F) |
62 | board_early_init_f, /* Call board-specific init code early.*/ | |
4a551709 WD |
63 | #endif |
64 | ||
65 | env_init, | |
66 | serial_init, | |
67 | console_init_f, | |
68 | display_options, | |
69 | checkcpu, | |
70 | checkboard, | |
71 | NULL, /* Terminate this list */ | |
72 | }; | |
73 | ||
74 | ||
75 | /***********************************************************************/ | |
76 | void board_init (void) | |
77 | { | |
4a551709 WD |
78 | bd_t *bd; |
79 | init_fnc_t **init_fnc_ptr; | |
a3ad8e26 WD |
80 | char *s, *e; |
81 | int i; | |
4a551709 WD |
82 | |
83 | /* Pointer is writable since we allocated a register for it. | |
6d0f6bcf | 84 | * Nios treats CONFIG_SYS_GBL_DATA_OFFSET as an address. |
4a551709 | 85 | */ |
6d0f6bcf | 86 | gd = (gd_t *)CONFIG_SYS_GBL_DATA_OFFSET; |
93f6a677 WD |
87 | /* compiler optimization barrier needed for GCC >= 3.4 */ |
88 | __asm__ __volatile__("": : :"memory"); | |
89 | ||
6d0f6bcf | 90 | memset( gd, 0, CONFIG_SYS_GBL_DATA_SIZE ); |
4a551709 | 91 | |
4a551709 WD |
92 | gd->bd = (bd_t *)(gd+1); /* At end of global data */ |
93 | gd->baudrate = CONFIG_BAUDRATE; | |
94 | gd->cpu_clk = CONFIG_SYS_CLK_FREQ; | |
95 | ||
96 | bd = gd->bd; | |
6d0f6bcf JCPV |
97 | bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; |
98 | bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE; | |
99 | bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; | |
100 | #if defined(CONFIG_SYS_SRAM_BASE) && defined(CONFIG_SYS_SRAM_SIZE) | |
101 | bd->bi_sramstart= CONFIG_SYS_SRAM_BASE; | |
102 | bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; | |
ec4c544b | 103 | #endif |
4a551709 WD |
104 | bd->bi_baudrate = CONFIG_BAUDRATE; |
105 | ||
106 | for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) { | |
028ab6b5 | 107 | WATCHDOG_RESET (); |
4a551709 WD |
108 | if ((*init_fnc_ptr) () != 0) { |
109 | hang (); | |
110 | } | |
111 | } | |
112 | ||
c790b04d | 113 | WATCHDOG_RESET (); |
d4e8ada0 PT |
114 | |
115 | /* The Malloc area is immediately below the monitor copy in RAM */ | |
a483a167 | 116 | mem_malloc_init(CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN); |
c790b04d | 117 | |
028ab6b5 | 118 | WATCHDOG_RESET (); |
4a551709 WD |
119 | bd->bi_flashsize = flash_init(); |
120 | ||
028ab6b5 | 121 | WATCHDOG_RESET (); |
4a551709 WD |
122 | env_relocate(); |
123 | ||
a0f2fe52 | 124 | bd->bi_ip_addr = getenv_IPaddr ("ipaddr"); |
a0f2fe52 | 125 | |
028ab6b5 | 126 | WATCHDOG_RESET (); |
52cb4d4f | 127 | stdio_init(); |
4a551709 WD |
128 | jumptable_init(); |
129 | console_init_r(); | |
130 | /* | |
131 | */ | |
132 | ||
028ab6b5 | 133 | WATCHDOG_RESET (); |
4a551709 | 134 | interrupt_init (); |
c935d3bd WD |
135 | |
136 | #ifdef CONFIG_STATUS_LED | |
137 | status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING); | |
138 | #endif | |
139 | ||
4a551709 WD |
140 | /* main_loop */ |
141 | for (;;) { | |
142 | WATCHDOG_RESET (); | |
143 | main_loop (); | |
144 | } | |
145 | } | |
146 | ||
147 | ||
148 | /***********************************************************************/ | |
149 | ||
150 | void hang (void) | |
151 | { | |
c935d3bd WD |
152 | #ifdef CONFIG_STATUS_LED |
153 | status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF); | |
154 | status_led_set(STATUS_LED_RED, STATUS_LED_BLINKING); | |
155 | #endif | |
4a551709 WD |
156 | puts("### ERROR ### Please reset board ###\n"); |
157 | for (;;); | |
158 | } | |
a4986459 MF |
159 | |
160 | unsigned long do_go_exec (ulong (*entry)(int, char *[]), int argc, char *argv[]) | |
161 | { | |
162 | /* | |
163 | * x86 does not use a dedicated register to pass the pointer | |
164 | * to the global_data | |
165 | */ | |
166 | argv[-1] = (char *)gd; | |
167 | return entry (argc, argv); | |
168 | } |