xref: /freebsd/sys/arm/ti/ti_machdep.c (revision 273c26a3c3bea87a241d6879abd4f991db180bf0)
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 #include <sys/param.h>
44 #include <sys/systm.h>
45 #include <sys/bus.h>
46 #include <sys/devmap.h>
47 
48 #include <vm/vm.h>
49 #include <vm/pmap.h>
50 
51 #include <machine/bus.h>
52 #include <machine/machdep.h>
53 #include <machine/platformvar.h>
54 
55 #include <arm/ti/omap4/omap4_reg.h>
56 
57 #include "platform_if.h"
58 
59 void (*ti_cpu_reset)(void) = NULL;
60 
61 static vm_offset_t
62 ti_lastaddr(platform_t plat)
63 {
64 
65 	return (devmap_lastaddr());
66 }
67 
68 /*
69  * Construct static devmap entries to map out the most frequently used
70  * peripherals using 1mb section mappings.
71  */
72 #if defined(SOC_OMAP4)
73 static int
74 ti_omap4_devmap_init(platform_t plat)
75 {
76 	devmap_add_entry(0x48000000, 0x01000000); /*16mb L4_PER devices */
77 	devmap_add_entry(0x4A000000, 0x01000000); /*16mb L4_CFG devices */
78 	return (0);
79 }
80 #endif
81 
82 #if defined(SOC_TI_AM335X)
83 static int
84 ti_am335x_devmap_init(platform_t plat)
85 {
86 
87 	devmap_add_entry(0x44C00000, 0x00400000); /* 4mb L4_WKUP devices*/
88 	devmap_add_entry(0x47400000, 0x00100000); /* 1mb USB            */
89 	devmap_add_entry(0x47800000, 0x00100000); /* 1mb mmchs2         */
90 	devmap_add_entry(0x48000000, 0x01000000); /*16mb L4_PER devices */
91 	devmap_add_entry(0x49000000, 0x00100000); /* 1mb edma3          */
92 	devmap_add_entry(0x49800000, 0x00300000); /* 3mb edma3          */
93 	devmap_add_entry(0x4A000000, 0x01000000); /*16mb L4_FAST devices*/
94 	return (0);
95 }
96 #endif
97 
98 static void
99 ti_plat_cpu_reset(platform_t plat)
100 {
101 	if (ti_cpu_reset)
102 		(*ti_cpu_reset)();
103 	else
104 		printf("no cpu_reset implementation\n");
105 }
106 
107 #if defined(SOC_OMAP4)
108 static platform_method_t omap4_methods[] = {
109 	PLATFORMMETHOD(platform_devmap_init,	ti_omap4_devmap_init),
110 	PLATFORMMETHOD(platform_lastaddr,	ti_lastaddr),
111 	PLATFORMMETHOD(platform_cpu_reset,	ti_plat_cpu_reset),
112 
113 	PLATFORMMETHOD_END,
114 };
115 FDT_PLATFORM_DEF(omap4, "omap4", 0, "ti,omap4430", 0);
116 #endif
117 
118 #if defined(SOC_TI_AM335X)
119 static platform_method_t am335x_methods[] = {
120 	PLATFORMMETHOD(platform_devmap_init,	ti_am335x_devmap_init),
121 	PLATFORMMETHOD(platform_lastaddr,	ti_lastaddr),
122 	PLATFORMMETHOD(platform_cpu_reset,	ti_plat_cpu_reset),
123 
124 	PLATFORMMETHOD_END,
125 };
126 
127 FDT_PLATFORM_DEF(am335x, "am335x", 0, "ti,am335x", 0);
128 #endif
129