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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 | ||
d87080b7 WD |
36 | #ifdef CONFIG_USE_IRQ |
37 | DECLARE_GLOBAL_DATA_PTR; | |
38 | #endif | |
39 | ||
74f4304e WD |
40 | int cpu_init (void) |
41 | { | |
42 | /* | |
43 | * setup up stacks if necessary | |
44 | */ | |
45 | #ifdef CONFIG_USE_IRQ | |
6d0f6bcf | 46 | IRQ_STACK_START = _armboot_start - CONFIG_SYS_MALLOC_LEN - CONFIG_SYS_GBL_DATA_SIZE - 4; |
74f4304e WD |
47 | FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ; |
48 | #endif | |
49 | return 0; | |
50 | } | |
51 | ||
52 | int cleanup_before_linux (void) | |
53 | { | |
54 | /* | |
55 | * this function is called just before we call linux | |
56 | * it prepares the processor for linux | |
57 | * | |
58 | * we turn off caches etc ... | |
59 | */ | |
60 | ||
61 | disable_interrupts (); | |
62 | ||
fe7eb5d8 WD |
63 | /* Since the CM has unknown processor we do not support |
64 | * cache operations | |
74f4304e WD |
65 | */ |
66 | ||
67 | return (0); | |
68 | } | |
69 | ||
70 | int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
71 | { | |
72 | extern void reset_cpu (ulong addr); | |
73 | ||
74 | disable_interrupts (); | |
75 | reset_cpu (0); | |
76 | /*NOTREACHED*/ | |
77 | return (0); | |
78 | } | |
79 | ||
80 | /* May not be cahed processor on the CM - do nothing */ | |
81 | void icache_enable (void) | |
82 | { | |
83 | } | |
84 | ||
85 | void icache_disable (void) | |
86 | { | |
87 | } | |
88 | ||
89 | /* return "disabled" */ | |
90 | int icache_status (void) | |
91 | { | |
92 | return 0; | |
93 | } |