xref: /freebsd/sys/arm/ti/ti_machdep.c (revision 8ddb146abcdf061be9f2c0db7e391697dafad85c)
1 /*-
2  * SPDX-License-Identifier: BSD-4-Clause
3  *
4  * Copyright (c) 1994-1998 Mark Brinicombe.
5  * Copyright (c) 1994 Brini.
6  * All rights reserved.
7  *
8  * This code is derived from software written for Brini by Mark Brinicombe
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  * 3. All advertising materials mentioning features or use of this software
19  *    must display the following acknowledgement:
20  *      This product includes software developed by Brini.
21  * 4. The name of the company nor the name of the author may be used to
22  *    endorse or promote products derived from this software without specific
23  *    prior written permission.
24  *
25  * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
26  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
28  * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
29  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
30  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
31  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35  * SUCH DAMAGE.
36  *
37  * from: FreeBSD: //depot/projects/arm/src/sys/arm/at91/kb920x_machdep.c, rev 45
38  */
39 
40 #include "opt_platform.h"
41 
42 #include <sys/cdefs.h>
43 __FBSDID("$FreeBSD$");
44 
45 #include <sys/param.h>
46 #include <sys/systm.h>
47 #include <sys/bus.h>
48 #include <sys/devmap.h>
49 
50 #include <vm/vm.h>
51 #include <vm/pmap.h>
52 
53 #include <machine/bus.h>
54 #include <machine/machdep.h>
55 #include <machine/platformvar.h>
56 
57 #include <arm/ti/omap4/omap4_machdep.h>
58 #include <arm/ti/omap4/omap4_reg.h>
59 #include <arm/ti/ti_cpuid.h>
60 
61 #include "platform_if.h"
62 
63 #if defined(SOC_OMAP4)
64 #include "platform_pl310_if.h"
65 
66 static platform_attach_t omap4_attach;
67 static platform_devmap_init_t ti_omap4_devmap_init;
68 #endif
69 #if defined(SOC_TI_AM335X)
70 static platform_attach_t ti_am335x_attach;
71 static platform_devmap_init_t ti_am335x_devmap_init;
72 #endif
73 static platform_cpu_reset_t ti_plat_cpu_reset;
74 
75 void (*ti_cpu_reset)(void) = NULL;
76 
77 int _ti_chip = -1;
78 
79 #if defined(SOC_OMAP4)
80 static int
81 omap4_attach(platform_t plat)
82 {
83 	_ti_chip = CHIP_OMAP_4;
84 	return (0);
85 }
86 #endif
87 
88 #if defined(SOC_TI_AM335X)
89 static int
90 ti_am335x_attach(platform_t plat)
91 {
92 	_ti_chip = CHIP_AM335X;
93 	return (0);
94 }
95 #endif
96 
97 /*
98  * Construct static devmap entries to map out the most frequently used
99  * peripherals using 1mb section mappings.
100  */
101 #if defined(SOC_OMAP4)
102 static int
103 ti_omap4_devmap_init(platform_t plat)
104 {
105 	devmap_add_entry(0x48000000, 0x01000000); /*16mb L4_PER devices */
106 	devmap_add_entry(0x4A000000, 0x01000000); /*16mb L4_CFG devices */
107 	return (0);
108 }
109 #endif
110 
111 #if defined(SOC_TI_AM335X)
112 static int
113 ti_am335x_devmap_init(platform_t plat)
114 {
115 
116 	devmap_add_entry(0x44C00000, 0x00400000); /* 4mb L4_WKUP devices*/
117 	devmap_add_entry(0x47400000, 0x00100000); /* 1mb USB            */
118 	devmap_add_entry(0x47800000, 0x00100000); /* 1mb mmchs2         */
119 	devmap_add_entry(0x48000000, 0x01000000); /*16mb L4_PER devices */
120 	devmap_add_entry(0x49000000, 0x00100000); /* 1mb edma3          */
121 	devmap_add_entry(0x49800000, 0x00300000); /* 3mb edma3          */
122 	devmap_add_entry(0x4A000000, 0x01000000); /*16mb L4_FAST devices*/
123 	return (0);
124 }
125 #endif
126 
127 static void
128 ti_plat_cpu_reset(platform_t plat)
129 {
130 	if (ti_cpu_reset)
131 		(*ti_cpu_reset)();
132 	else
133 		printf("no cpu_reset implementation\n");
134 }
135 
136 #if defined(SOC_OMAP4)
137 static platform_method_t omap4_methods[] = {
138 	PLATFORMMETHOD(platform_attach, 	omap4_attach),
139 	PLATFORMMETHOD(platform_devmap_init,	ti_omap4_devmap_init),
140 	PLATFORMMETHOD(platform_cpu_reset,	ti_plat_cpu_reset),
141 
142 #ifdef SMP
143 	PLATFORMMETHOD(platform_mp_start_ap,	omap4_mp_start_ap),
144 	PLATFORMMETHOD(platform_mp_setmaxid,	omap4_mp_setmaxid),
145 #endif
146 
147 	PLATFORMMETHOD(platform_pl310_init,	omap4_pl310_init),
148 	PLATFORMMETHOD(platform_pl310_write_ctrl, omap4_pl310_write_ctrl),
149 	PLATFORMMETHOD(platform_pl310_write_debug, omap4_pl310_write_debug),
150 
151 	PLATFORMMETHOD_END,
152 };
153 FDT_PLATFORM_DEF(omap4, "omap4", 0, "ti,omap4430", 200);
154 #endif
155 
156 #if defined(SOC_TI_AM335X)
157 static platform_method_t am335x_methods[] = {
158 	PLATFORMMETHOD(platform_attach, 	ti_am335x_attach),
159 	PLATFORMMETHOD(platform_devmap_init,	ti_am335x_devmap_init),
160 	PLATFORMMETHOD(platform_cpu_reset,	ti_plat_cpu_reset),
161 
162 	PLATFORMMETHOD_END,
163 };
164 
165 FDT_PLATFORM_DEF(am335x, "am335x", 0, "ti,am33xx", 200);
166 #endif
167