xref: /openbmc/u-boot/arch/sh/cpu/sh4/cpu.c (revision 4e3349b6)
1 /*
2  * (C) Copyright 2007
3  * Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
4  *
5  * See file CREDITS for list of people who contributed to this
6  * project.
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License as
10  * published by the Free Software Foundation; either version 2 of
11  * the License, or (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21  * MA 02111-1307 USA
22  */
23 
24 #include <common.h>
25 #include <command.h>
26 #include <netdev.h>
27 #include <asm/processor.h>
28 #include <asm/cache.h>
29 
30 int checkcpu(void)
31 {
32 #ifdef CONFIG_SH4A
33 	puts("CPU: SH-4A\n");
34 #else
35 	puts("CPU: SH4\n");
36 #endif
37 	return 0;
38 }
39 
40 int cpu_init (void)
41 {
42 	return 0;
43 }
44 
45 int cleanup_before_linux (void)
46 {
47 	disable_interrupts();
48 	return 0;
49 }
50 
51 int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
52 {
53 	disable_interrupts();
54 	reset_cpu (0);
55 	return 0;
56 }
57 
58 void flush_cache (unsigned long addr, unsigned long size)
59 {
60 	dcache_invalid_range( addr , addr + size );
61 }
62 
63 void icache_enable (void)
64 {
65 	cache_control(0);
66 }
67 
68 void icache_disable (void)
69 {
70 	cache_control(1);
71 }
72 
73 int icache_status (void)
74 {
75 	return 0;
76 }
77 
78 void dcache_enable (void)
79 {
80 }
81 
82 void dcache_disable (void)
83 {
84 }
85 
86 int dcache_status (void)
87 {
88 	return 0;
89 }
90 
91 int cpu_eth_init(bd_t *bis)
92 {
93 #ifdef CONFIG_SH_ETHER
94 	sh_eth_initialize(bis);
95 #endif
96 	return 0;
97 }
98