scoutos / prex-0.9.0 / bsp / hal / arm / integrator / machdep.c @ 03e9c04a
History | View | Annotate | Download (3.57 KB)
1 | 03e9c04a | Brad Neuman | /*-
|
---|---|---|---|
2 | * Copyright (c) 2008-2009, Kohsuke Ohtani
|
||
3 | * All rights reserved.
|
||
4 | *
|
||
5 | * Redistribution and use in source and binary forms, with or without
|
||
6 | * modification, are permitted provided that the following conditions
|
||
7 | * are met:
|
||
8 | * 1. Redistributions of source code must retain the above copyright
|
||
9 | * notice, this list of conditions and the following disclaimer.
|
||
10 | * 2. Redistributions in binary form must reproduce the above copyright
|
||
11 | * notice, this list of conditions and the following disclaimer in the
|
||
12 | * documentation and/or other materials provided with the distribution.
|
||
13 | * 3. Neither the name of the author nor the names of any co-contributors
|
||
14 | * may be used to endorse or promote products derived from this software
|
||
15 | * without specific prior written permission.
|
||
16 | *
|
||
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||
18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||
21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
27 | * SUCH DAMAGE.
|
||
28 | */
|
||
29 | |||
30 | /*
|
||
31 | * machdep.c - machine-dependent routines for ARM Integrator-CP
|
||
32 | */
|
||
33 | |||
34 | #include <machine/syspage.h> |
||
35 | #include <sys/power.h> |
||
36 | #include <sys/bootinfo.h> |
||
37 | #include <kernel.h> |
||
38 | #include <page.h> |
||
39 | #include <mmu.h> |
||
40 | #include <cpu.h> |
||
41 | #include <cpufunc.h> |
||
42 | #include <locore.h> |
||
43 | |||
44 | #include "platform.h" |
||
45 | |||
46 | /* System control reg */
|
||
47 | #define SC_CTRL (*(volatile uint32_t *)(FPGA_BASE + 0x0c)) |
||
48 | |||
49 | #define SCCTRL_SOFTRESET 0x08 |
||
50 | |||
51 | #ifdef CONFIG_MMU
|
||
52 | /*
|
||
53 | * Virtual and physical address mapping
|
||
54 | *
|
||
55 | * { virtual, physical, size, type }
|
||
56 | */
|
||
57 | struct mmumap mmumap_table[] =
|
||
58 | { |
||
59 | /*
|
||
60 | * Internal SRAM (4M)
|
||
61 | */
|
||
62 | { 0x80000000, 0x00000000, 0x400000, VMT_RAM }, |
||
63 | |||
64 | /*
|
||
65 | * FPGA core control (4K)
|
||
66 | */
|
||
67 | { 0xD0000000, 0x10000000, 0x1000, VMT_IO }, |
||
68 | |||
69 | /*
|
||
70 | * Counter/Timers (1M)
|
||
71 | */
|
||
72 | { 0xD3000000, 0x13000000, 0x100000, VMT_IO }, |
||
73 | |||
74 | /*
|
||
75 | * Interrupt controller (1M)
|
||
76 | */
|
||
77 | { 0xD4000000, 0x14000000, 0x100000, VMT_IO }, |
||
78 | |||
79 | /*
|
||
80 | * Real-time clock (1M)
|
||
81 | */
|
||
82 | { 0xD5000000, 0x15000000, 0x100000, VMT_IO }, |
||
83 | |||
84 | /*
|
||
85 | * UART 0 (1M)
|
||
86 | */
|
||
87 | { 0xD6000000, 0x16000000, 0x100000, VMT_IO }, |
||
88 | |||
89 | { 0,0,0,0 } |
||
90 | }; |
||
91 | #endif
|
||
92 | |||
93 | /*
|
||
94 | * Idle
|
||
95 | */
|
||
96 | void
|
||
97 | machine_idle(void)
|
||
98 | { |
||
99 | |||
100 | cpu_idle(); |
||
101 | } |
||
102 | |||
103 | /*
|
||
104 | * Reset system.
|
||
105 | */
|
||
106 | static void |
||
107 | machine_reset(void)
|
||
108 | { |
||
109 | |||
110 | SC_CTRL = SCCTRL_SOFTRESET; |
||
111 | |||
112 | for (;;) ;
|
||
113 | /* NOTREACHED */
|
||
114 | } |
||
115 | |||
116 | /*
|
||
117 | * Set system power
|
||
118 | */
|
||
119 | void
|
||
120 | machine_powerdown(int state)
|
||
121 | { |
||
122 | |||
123 | splhigh(); |
||
124 | |||
125 | DPRINTF(("Power down machine\n"));
|
||
126 | |||
127 | switch (state) {
|
||
128 | case PWR_OFF:
|
||
129 | for (;;)
|
||
130 | cpu_idle(); |
||
131 | /* NOTREACHED */
|
||
132 | break;
|
||
133 | case PWR_REBOOT:
|
||
134 | machine_reset(); |
||
135 | /* NOTREACHED */
|
||
136 | break;
|
||
137 | } |
||
138 | } |
||
139 | |||
140 | /*
|
||
141 | * Return pointer to the boot information.
|
||
142 | */
|
||
143 | void
|
||
144 | machine_bootinfo(struct bootinfo **bip)
|
||
145 | { |
||
146 | |||
147 | *bip = (struct bootinfo *)BOOTINFO;
|
||
148 | } |
||
149 | |||
150 | void
|
||
151 | machine_abort(void)
|
||
152 | { |
||
153 | |||
154 | for (;;)
|
||
155 | cpu_idle(); |
||
156 | } |
||
157 | |||
158 | /*
|
||
159 | * Machine-dependent startup code
|
||
160 | */
|
||
161 | void
|
||
162 | machine_startup(void)
|
||
163 | { |
||
164 | |||
165 | /*
|
||
166 | * Initialize CPU and basic hardware.
|
||
167 | */
|
||
168 | cpu_init(); |
||
169 | cache_init(); |
||
170 | |||
171 | /*
|
||
172 | * Reserve system pages.
|
||
173 | */
|
||
174 | page_reserve(kvtop(SYSPAGE), SYSPAGESZ); |
||
175 | |||
176 | /*
|
||
177 | * Setup vector page.
|
||
178 | */
|
||
179 | vector_copy((vaddr_t)ptokv(CONFIG_ARM_VECTORS)); |
||
180 | |||
181 | #ifdef CONFIG_MMU
|
||
182 | /*
|
||
183 | * Initialize MMU
|
||
184 | */
|
||
185 | mmu_init(mmumap_table); |
||
186 | #endif
|
||
187 | } |