xref: /freebsd/sys/arm/ti/ti_machdep.c (revision b1f9167f94059fd55c630891d359bcff987bd7eb)
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
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
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
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 *
100 bus_dma_get_range(void)
101 {
102 
103 	return (NULL);
104 }
105 
106 int
107 bus_dma_get_range_nb(void)
108 {
109 
110 	return (0);
111 }
112 
113 void
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