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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 | ||
52 | extern void malloc_bin_reloc (void); | |
53 | typedef int (init_fnc_t) (void); | |
4a551709 | 54 | |
4a551709 WD |
55 | /* |
56 | * The Malloc area is immediately below the monitor copy in RAM | |
57 | */ | |
a483a167 | 58 | static void mem_malloc_init(ulong start, ulong size) |
4a551709 | 59 | { |
a483a167 PT |
60 | mem_malloc_start = start; |
61 | mem_malloc_end = start + size; | |
62 | mem_malloc_brk = start; | |
63 | ||
64 | memset ((void *)mem_malloc_start, 0, size); | |
4a551709 WD |
65 | } |
66 | ||
4a551709 WD |
67 | |
68 | /************************************************************************ | |
69 | * Initialization sequence * | |
70 | ***********************************************************************/ | |
71 | ||
72 | init_fnc_t *init_sequence[] = { | |
73 | ||
c837dcb1 WD |
74 | #if defined(CONFIG_BOARD_EARLY_INIT_F) |
75 | board_early_init_f, /* Call board-specific init code early.*/ | |
4a551709 WD |
76 | #endif |
77 | ||
78 | env_init, | |
79 | serial_init, | |
80 | console_init_f, | |
81 | display_options, | |
82 | checkcpu, | |
83 | checkboard, | |
84 | NULL, /* Terminate this list */ | |
85 | }; | |
86 | ||
87 | ||
88 | /***********************************************************************/ | |
89 | void board_init (void) | |
90 | { | |
4a551709 WD |
91 | bd_t *bd; |
92 | init_fnc_t **init_fnc_ptr; | |
a3ad8e26 WD |
93 | char *s, *e; |
94 | int i; | |
4a551709 WD |
95 | |
96 | /* Pointer is writable since we allocated a register for it. | |
6d0f6bcf | 97 | * Nios treats CONFIG_SYS_GBL_DATA_OFFSET as an address. |
4a551709 | 98 | */ |
6d0f6bcf | 99 | gd = (gd_t *)CONFIG_SYS_GBL_DATA_OFFSET; |
93f6a677 WD |
100 | /* compiler optimization barrier needed for GCC >= 3.4 */ |
101 | __asm__ __volatile__("": : :"memory"); | |
102 | ||
6d0f6bcf | 103 | memset( gd, 0, CONFIG_SYS_GBL_DATA_SIZE ); |
4a551709 | 104 | |
4a551709 WD |
105 | gd->bd = (bd_t *)(gd+1); /* At end of global data */ |
106 | gd->baudrate = CONFIG_BAUDRATE; | |
107 | gd->cpu_clk = CONFIG_SYS_CLK_FREQ; | |
108 | ||
109 | bd = gd->bd; | |
6d0f6bcf JCPV |
110 | bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; |
111 | bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE; | |
112 | bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; | |
113 | #if defined(CONFIG_SYS_SRAM_BASE) && defined(CONFIG_SYS_SRAM_SIZE) | |
114 | bd->bi_sramstart= CONFIG_SYS_SRAM_BASE; | |
115 | bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; | |
ec4c544b | 116 | #endif |
4a551709 WD |
117 | bd->bi_baudrate = CONFIG_BAUDRATE; |
118 | ||
119 | for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) { | |
028ab6b5 | 120 | WATCHDOG_RESET (); |
4a551709 WD |
121 | if ((*init_fnc_ptr) () != 0) { |
122 | hang (); | |
123 | } | |
124 | } | |
125 | ||
c790b04d | 126 | WATCHDOG_RESET (); |
a483a167 | 127 | mem_malloc_init(CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN); |
c790b04d SR |
128 | malloc_bin_reloc(); |
129 | ||
028ab6b5 | 130 | WATCHDOG_RESET (); |
4a551709 WD |
131 | bd->bi_flashsize = flash_init(); |
132 | ||
028ab6b5 | 133 | WATCHDOG_RESET (); |
4a551709 WD |
134 | env_relocate(); |
135 | ||
a0f2fe52 | 136 | bd->bi_ip_addr = getenv_IPaddr ("ipaddr"); |
a0f2fe52 | 137 | |
028ab6b5 | 138 | WATCHDOG_RESET (); |
52cb4d4f | 139 | stdio_init(); |
4a551709 WD |
140 | jumptable_init(); |
141 | console_init_r(); | |
142 | /* | |
143 | */ | |
144 | ||
028ab6b5 | 145 | WATCHDOG_RESET (); |
4a551709 | 146 | interrupt_init (); |
c935d3bd WD |
147 | |
148 | #ifdef CONFIG_STATUS_LED | |
149 | status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING); | |
150 | #endif | |
151 | ||
4a551709 WD |
152 | /* main_loop */ |
153 | for (;;) { | |
154 | WATCHDOG_RESET (); | |
155 | main_loop (); | |
156 | } | |
157 | } | |
158 | ||
159 | ||
160 | /***********************************************************************/ | |
161 | ||
162 | void hang (void) | |
163 | { | |
c935d3bd WD |
164 | #ifdef CONFIG_STATUS_LED |
165 | status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF); | |
166 | status_led_set(STATUS_LED_RED, STATUS_LED_BLINKING); | |
167 | #endif | |
4a551709 WD |
168 | puts("### ERROR ### Please reset board ###\n"); |
169 | for (;;); | |
170 | } | |
a4986459 MF |
171 | |
172 | unsigned long do_go_exec (ulong (*entry)(int, char *[]), int argc, char *argv[]) | |
173 | { | |
174 | /* | |
175 | * x86 does not use a dedicated register to pass the pointer | |
176 | * to the global_data | |
177 | */ | |
178 | argv[-1] = (char *)gd; | |
179 | return entry (argc, argv); | |
180 | } |