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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/mips/au1000/common/reset.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/mips/au1000/common/reset.c')
-rw-r--r--arch/mips/au1000/common/reset.c195
1 files changed, 195 insertions, 0 deletions
diff --git a/arch/mips/au1000/common/reset.c b/arch/mips/au1000/common/reset.c
new file mode 100644
index 000000000000..65b84db800e4
--- /dev/null
+++ b/arch/mips/au1000/common/reset.c
@@ -0,0 +1,195 @@
1/*
2 *
3 * BRIEF MODULE DESCRIPTION
4 * Au1000 reset routines.
5 *
6 * Copyright 2001 MontaVista Software Inc.
7 * Author: MontaVista Software, Inc.
8 * ppopov@mvista.com or source@mvista.com
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 *
15 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
16 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
17 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
18 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
21 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
22 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * You should have received a copy of the GNU General Public License along
27 * with this program; if not, write to the Free Software Foundation, Inc.,
28 * 675 Mass Ave, Cambridge, MA 02139, USA.
29 */
30#include <linux/config.h>
31#include <linux/sched.h>
32#include <linux/mm.h>
33#include <asm/io.h>
34#include <asm/pgtable.h>
35#include <asm/processor.h>
36#include <asm/reboot.h>
37#include <asm/system.h>
38#include <asm/mach-au1x00/au1000.h>
39
40extern int au_sleep(void);
41extern void (*flush_cache_all)(void);
42
43void au1000_restart(char *command)
44{
45 /* Set all integrated peripherals to disabled states */
46 extern void board_reset (void);
47 u32 prid = read_c0_prid();
48
49 printk(KERN_NOTICE "\n** Resetting Integrated Peripherals\n");
50 switch (prid & 0xFF000000)
51 {
52 case 0x00000000: /* Au1000 */
53 au_writel(0x02, 0xb0000010); /* ac97_enable */
54 au_writel(0x08, 0xb017fffc); /* usbh_enable - early errata */
55 asm("sync");
56 au_writel(0x00, 0xb017fffc); /* usbh_enable */
57 au_writel(0x00, 0xb0200058); /* usbd_enable */
58 au_writel(0x00, 0xb0300040); /* ir_enable */
59 au_writel(0x00, 0xb4004104); /* mac dma */
60 au_writel(0x00, 0xb4004114); /* mac dma */
61 au_writel(0x00, 0xb4004124); /* mac dma */
62 au_writel(0x00, 0xb4004134); /* mac dma */
63 au_writel(0x00, 0xb0520000); /* macen0 */
64 au_writel(0x00, 0xb0520004); /* macen1 */
65 au_writel(0x00, 0xb1000008); /* i2s_enable */
66 au_writel(0x00, 0xb1100100); /* uart0_enable */
67 au_writel(0x00, 0xb1200100); /* uart1_enable */
68 au_writel(0x00, 0xb1300100); /* uart2_enable */
69 au_writel(0x00, 0xb1400100); /* uart3_enable */
70 au_writel(0x02, 0xb1600100); /* ssi0_enable */
71 au_writel(0x02, 0xb1680100); /* ssi1_enable */
72 au_writel(0x00, 0xb1900020); /* sys_freqctrl0 */
73 au_writel(0x00, 0xb1900024); /* sys_freqctrl1 */
74 au_writel(0x00, 0xb1900028); /* sys_clksrc */
75 au_writel(0x10, 0xb1900060); /* sys_cpupll */
76 au_writel(0x00, 0xb1900064); /* sys_auxpll */
77 au_writel(0x00, 0xb1900100); /* sys_pininputen */
78 break;
79 case 0x01000000: /* Au1500 */
80 au_writel(0x02, 0xb0000010); /* ac97_enable */
81 au_writel(0x08, 0xb017fffc); /* usbh_enable - early errata */
82 asm("sync");
83 au_writel(0x00, 0xb017fffc); /* usbh_enable */
84 au_writel(0x00, 0xb0200058); /* usbd_enable */
85 au_writel(0x00, 0xb4004104); /* mac dma */
86 au_writel(0x00, 0xb4004114); /* mac dma */
87 au_writel(0x00, 0xb4004124); /* mac dma */
88 au_writel(0x00, 0xb4004134); /* mac dma */
89 au_writel(0x00, 0xb1520000); /* macen0 */
90 au_writel(0x00, 0xb1520004); /* macen1 */
91 au_writel(0x00, 0xb1100100); /* uart0_enable */
92 au_writel(0x00, 0xb1400100); /* uart3_enable */
93 au_writel(0x00, 0xb1900020); /* sys_freqctrl0 */
94 au_writel(0x00, 0xb1900024); /* sys_freqctrl1 */
95 au_writel(0x00, 0xb1900028); /* sys_clksrc */
96 au_writel(0x10, 0xb1900060); /* sys_cpupll */
97 au_writel(0x00, 0xb1900064); /* sys_auxpll */
98 au_writel(0x00, 0xb1900100); /* sys_pininputen */
99 break;
100 case 0x02000000: /* Au1100 */
101 au_writel(0x02, 0xb0000010); /* ac97_enable */
102 au_writel(0x08, 0xb017fffc); /* usbh_enable - early errata */
103 asm("sync");
104 au_writel(0x00, 0xb017fffc); /* usbh_enable */
105 au_writel(0x00, 0xb0200058); /* usbd_enable */
106 au_writel(0x00, 0xb0300040); /* ir_enable */
107 au_writel(0x00, 0xb4004104); /* mac dma */
108 au_writel(0x00, 0xb4004114); /* mac dma */
109 au_writel(0x00, 0xb4004124); /* mac dma */
110 au_writel(0x00, 0xb4004134); /* mac dma */
111 au_writel(0x00, 0xb0520000); /* macen0 */
112 au_writel(0x00, 0xb1000008); /* i2s_enable */
113 au_writel(0x00, 0xb1100100); /* uart0_enable */
114 au_writel(0x00, 0xb1200100); /* uart1_enable */
115 au_writel(0x00, 0xb1400100); /* uart3_enable */
116 au_writel(0x02, 0xb1600100); /* ssi0_enable */
117 au_writel(0x02, 0xb1680100); /* ssi1_enable */
118 au_writel(0x00, 0xb1900020); /* sys_freqctrl0 */
119 au_writel(0x00, 0xb1900024); /* sys_freqctrl1 */
120 au_writel(0x00, 0xb1900028); /* sys_clksrc */
121 au_writel(0x10, 0xb1900060); /* sys_cpupll */
122 au_writel(0x00, 0xb1900064); /* sys_auxpll */
123 au_writel(0x00, 0xb1900100); /* sys_pininputen */
124 break;
125 case 0x03000000: /* Au1550 */
126 au_writel(0x00, 0xb1a00004); /* psc 0 */
127 au_writel(0x00, 0xb1b00004); /* psc 1 */
128 au_writel(0x00, 0xb0a00004); /* psc 2 */
129 au_writel(0x00, 0xb0b00004); /* psc 3 */
130 au_writel(0x00, 0xb017fffc); /* usbh_enable */
131 au_writel(0x00, 0xb0200058); /* usbd_enable */
132 au_writel(0x00, 0xb4004104); /* mac dma */
133 au_writel(0x00, 0xb4004114); /* mac dma */
134 au_writel(0x00, 0xb4004124); /* mac dma */
135 au_writel(0x00, 0xb4004134); /* mac dma */
136 au_writel(0x00, 0xb1520000); /* macen0 */
137 au_writel(0x00, 0xb1520004); /* macen1 */
138 au_writel(0x00, 0xb1100100); /* uart0_enable */
139 au_writel(0x00, 0xb1200100); /* uart1_enable */
140 au_writel(0x00, 0xb1400100); /* uart3_enable */
141 au_writel(0x00, 0xb1900020); /* sys_freqctrl0 */
142 au_writel(0x00, 0xb1900024); /* sys_freqctrl1 */
143 au_writel(0x00, 0xb1900028); /* sys_clksrc */
144 au_writel(0x10, 0xb1900060); /* sys_cpupll */
145 au_writel(0x00, 0xb1900064); /* sys_auxpll */
146 au_writel(0x00, 0xb1900100); /* sys_pininputen */
147 break;
148
149 default:
150 break;
151 }
152
153 set_c0_status(ST0_BEV | ST0_ERL);
154 set_c0_config(CONF_CM_UNCACHED);
155 flush_cache_all();
156 write_c0_wired(0);
157
158 /* Give board a chance to do a hardware reset */
159 board_reset();
160
161 /* Jump to the beggining in case board_reset() is empty */
162 __asm__ __volatile__("jr\t%0"::"r"(0xbfc00000));
163}
164
165void au1000_halt(void)
166{
167#if defined(CONFIG_MIPS_PB1550)
168 /* power off system */
169 printk("\n** Powering off Pb1550\n");
170 au_writew(au_readw(0xAF00001C) | (3<<14), 0xAF00001C);
171 au_sync();
172 while(1); /* should not get here */
173#endif
174 printk(KERN_NOTICE "\n** You can safely turn off the power\n");
175#ifdef CONFIG_MIPS_MIRAGE
176 au_writel((1 << 26) | (1 << 10), GPIO2_OUTPUT);
177#endif
178#ifdef CONFIG_PM
179 au_sleep();
180
181 /* should not get here */
182 printk(KERN_ERR "Unable to put cpu in sleep mode\n");
183 while(1);
184#else
185 while (1)
186 __asm__(".set\tmips3\n\t"
187 "wait\n\t"
188 ".set\tmips0");
189#endif
190}
191
192void au1000_power_off(void)
193{
194 au1000_halt();
195}
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