xref: /freebsd/sys/arm/ti/ti_machdep.c (revision 7f9dff23d3092aa33ad45b2b63e52469b3c13a6e)
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 #include <arm/ti/omap4/omap4_mp.h>
57 #include <arm/ti/ti_cpuid.h>
58 
59 #include "platform_if.h"
60 
61 void (*ti_cpu_reset)(void) = NULL;
62 
63 int _ti_chip = -1;
64 
65 #if defined(SOC_OMAP4)
66 static int
67 omap4_attach(platform_t plat)
68 {
69 	_ti_chip = CHIP_OMAP_4;
70 	return (0);
71 }
72 #endif
73 
74 #if defined(SOC_TI_AM335X)
75 static int
76 ti_am335x_attach(platform_t plat)
77 {
78 	_ti_chip = CHIP_AM335X;
79 	return (0);
80 }
81 #endif
82 
83 static vm_offset_t
84 ti_lastaddr(platform_t plat)
85 {
86 
87 	return (devmap_lastaddr());
88 }
89 
90 /*
91  * Construct static devmap entries to map out the most frequently used
92  * peripherals using 1mb section mappings.
93  */
94 #if defined(SOC_OMAP4)
95 static int
96 ti_omap4_devmap_init(platform_t plat)
97 {
98 	devmap_add_entry(0x48000000, 0x01000000); /*16mb L4_PER devices */
99 	devmap_add_entry(0x4A000000, 0x01000000); /*16mb L4_CFG devices */
100 	return (0);
101 }
102 #endif
103 
104 #if defined(SOC_TI_AM335X)
105 static int
106 ti_am335x_devmap_init(platform_t plat)
107 {
108 
109 	devmap_add_entry(0x44C00000, 0x00400000); /* 4mb L4_WKUP devices*/
110 	devmap_add_entry(0x47400000, 0x00100000); /* 1mb USB            */
111 	devmap_add_entry(0x47800000, 0x00100000); /* 1mb mmchs2         */
112 	devmap_add_entry(0x48000000, 0x01000000); /*16mb L4_PER devices */
113 	devmap_add_entry(0x49000000, 0x00100000); /* 1mb edma3          */
114 	devmap_add_entry(0x49800000, 0x00300000); /* 3mb edma3          */
115 	devmap_add_entry(0x4A000000, 0x01000000); /*16mb L4_FAST devices*/
116 	return (0);
117 }
118 #endif
119 
120 static void
121 ti_plat_cpu_reset(platform_t plat)
122 {
123 	if (ti_cpu_reset)
124 		(*ti_cpu_reset)();
125 	else
126 		printf("no cpu_reset implementation\n");
127 }
128 
129 #if defined(SOC_OMAP4)
130 static platform_method_t omap4_methods[] = {
131 	PLATFORMMETHOD(platform_attach, 	omap4_attach),
132 	PLATFORMMETHOD(platform_devmap_init,	ti_omap4_devmap_init),
133 	PLATFORMMETHOD(platform_lastaddr,	ti_lastaddr),
134 	PLATFORMMETHOD(platform_cpu_reset,	ti_plat_cpu_reset),
135 
136 #ifdef SMP
137 	PLATFORMMETHOD(platform_mp_start_ap,	omap4_mp_start_ap),
138 	PLATFORMMETHOD(platform_mp_setmaxid,	omap4_mp_setmaxid),
139 #endif
140 	PLATFORMMETHOD_END,
141 };
142 FDT_PLATFORM_DEF(omap4, "omap4", 0, "ti,omap4430", 200);
143 #endif
144 
145 #if defined(SOC_TI_AM335X)
146 static platform_method_t am335x_methods[] = {
147 	PLATFORMMETHOD(platform_attach, 	ti_am335x_attach),
148 	PLATFORMMETHOD(platform_devmap_init,	ti_am335x_devmap_init),
149 	PLATFORMMETHOD(platform_lastaddr,	ti_lastaddr),
150 	PLATFORMMETHOD(platform_cpu_reset,	ti_plat_cpu_reset),
151 
152 	PLATFORMMETHOD_END,
153 };
154 
155 FDT_PLATFORM_DEF(am335x, "am335x", 0, "ti,am33xx", 200);
156 #endif
157