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74f4304e WD |
1 | /* |
2 | * (C) Copyright 2002 | |
3 | * Sysgo Real-Time Solutions, GmbH <www.elinos.com> | |
4 | * Marius Groeger <mgroeger@sysgo.de> | |
5 | * | |
6 | * (C) Copyright 2002 | |
7 | * Gary Jennejohn, DENX Software Engineering, <gj@denx.de> | |
8 | * | |
9 | * See file CREDITS for list of people who contributed to this | |
10 | * project. | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or | |
13 | * modify it under the terms of the GNU General Public License as | |
14 | * published by the Free Software Foundation; either version 2 of | |
15 | * the License, or (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
25 | * MA 02111-1307 USA | |
26 | */ | |
27 | ||
28 | /* | |
29 | * CPU specific code for an unknown cpu | |
30 | * - hence fairly empty...... | |
31 | */ | |
32 | ||
33 | #include <common.h> | |
34 | #include <command.h> | |
35 | ||
36 | int cpu_init (void) | |
37 | { | |
38 | /* | |
39 | * setup up stacks if necessary | |
40 | */ | |
41 | #ifdef CONFIG_USE_IRQ | |
42 | DECLARE_GLOBAL_DATA_PTR; | |
43 | ||
44 | IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_SIZE - 4; | |
45 | FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ; | |
46 | #endif | |
47 | return 0; | |
48 | } | |
49 | ||
50 | int cleanup_before_linux (void) | |
51 | { | |
52 | /* | |
53 | * this function is called just before we call linux | |
54 | * it prepares the processor for linux | |
55 | * | |
56 | * we turn off caches etc ... | |
57 | */ | |
58 | ||
59 | disable_interrupts (); | |
60 | ||
61 | /* Since the CM has unknown processor we do not support | |
62 | * cache operations | |
63 | */ | |
64 | ||
65 | return (0); | |
66 | } | |
67 | ||
68 | int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
69 | { | |
70 | extern void reset_cpu (ulong addr); | |
71 | ||
72 | disable_interrupts (); | |
73 | reset_cpu (0); | |
74 | /*NOTREACHED*/ | |
75 | return (0); | |
76 | } | |
77 | ||
78 | /* May not be cahed processor on the CM - do nothing */ | |
79 | void icache_enable (void) | |
80 | { | |
81 | } | |
82 | ||
83 | void icache_disable (void) | |
84 | { | |
85 | } | |
86 | ||
87 | /* return "disabled" */ | |
88 | int icache_status (void) | |
89 | { | |
90 | return 0; | |
91 | } |