1 /*-
2 * Copyright (c) 1994-1998 Mark Brinicombe.
3 * Copyright (c) 1994 Brini.
4 * All rights reserved.
5 *
6 * This code is derived from software written for Brini by Mark Brinicombe
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by Brini.
19 * 4. The name of the company nor the name of the author may be used to
20 * endorse or promote products derived from this software without specific
21 * prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * from: FreeBSD: //depot/projects/arm/src/sys/arm/at91/kb920x_machdep.c, rev 45
36 */
37
38 #include "opt_platform.h"
39
40 #include <sys/cdefs.h>
41 __FBSDID("$FreeBSD$");
42
43 #define _ARM32_BUS_DMA_PRIVATE
44 #include <sys/param.h>
45 #include <sys/systm.h>
46 #include <sys/bus.h>
47
48 #include <vm/vm.h>
49 #include <vm/pmap.h>
50
51 #include <machine/bus.h>
52 #include <machine/devmap.h>
53 #include <machine/machdep.h>
54 #include <machine/platformvar.h>
55
56 #include <arm/ti/omap4/omap4_reg.h>
57
58 #include "platform_if.h"
59
60 void (*ti_cpu_reset)(void) = NULL;
61
62 static vm_offset_t
ti_lastaddr(platform_t plat)63 ti_lastaddr(platform_t plat)
64 {
65
66 return (arm_devmap_lastaddr());
67 }
68
69 /*
70 * Construct static devmap entries to map out the most frequently used
71 * peripherals using 1mb section mappings.
72 */
73 #if defined(SOC_OMAP4)
74 static int
ti_omap4_devmap_init(platform_t plat)75 ti_omap4_devmap_init(platform_t plat)
76 {
77 arm_devmap_add_entry(0x48000000, 0x01000000); /*16mb L4_PER devices */
78 arm_devmap_add_entry(0x4A000000, 0x01000000); /*16mb L4_CFG devices */
79 return (0);
80 }
81 #endif
82
83 #if defined(SOC_TI_AM335X)
84 static int
ti_am335x_devmap_init(platform_t plat)85 ti_am335x_devmap_init(platform_t plat)
86 {
87
88 arm_devmap_add_entry(0x44C00000, 0x00400000); /* 4mb L4_WKUP devices*/
89 arm_devmap_add_entry(0x47400000, 0x00100000); /* 1mb USB */
90 arm_devmap_add_entry(0x47800000, 0x00100000); /* 1mb mmchs2 */
91 arm_devmap_add_entry(0x48000000, 0x01000000); /*16mb L4_PER devices */
92 arm_devmap_add_entry(0x49000000, 0x00100000); /* 1mb edma3 */
93 arm_devmap_add_entry(0x49800000, 0x00300000); /* 3mb edma3 */
94 arm_devmap_add_entry(0x4A000000, 0x01000000); /*16mb L4_FAST devices*/
95 return (0);
96 }
97 #endif
98
99 struct arm32_dma_range *
bus_dma_get_range(void)100 bus_dma_get_range(void)
101 {
102
103 return (NULL);
104 }
105
106 int
bus_dma_get_range_nb(void)107 bus_dma_get_range_nb(void)
108 {
109
110 return (0);
111 }
112
113 void
cpu_reset()114 cpu_reset()
115 {
116 if (ti_cpu_reset)
117 (*ti_cpu_reset)();
118 else
119 printf("no cpu_reset implementation\n");
120 printf("Reset failed!\n");
121 while (1);
122 }
123
124 #if defined(SOC_OMAP4)
125 static platform_method_t omap4_methods[] = {
126 PLATFORMMETHOD(platform_devmap_init, ti_omap4_devmap_init),
127 PLATFORMMETHOD(platform_lastaddr, ti_lastaddr),
128
129 PLATFORMMETHOD_END,
130 };
131 FDT_PLATFORM_DEF(omap4, "omap4", 0, "ti,omap4430");
132 #endif
133
134 #if defined(SOC_TI_AM335X)
135 static platform_method_t am335x_methods[] = {
136 PLATFORMMETHOD(platform_devmap_init, ti_am335x_devmap_init),
137 PLATFORMMETHOD(platform_lastaddr, ti_lastaddr),
138
139 PLATFORMMETHOD_END,
140 };
141
142 FDT_PLATFORM_DEF(am335x, "am335x", 0, "ti,am335x");
143 #endif
144