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/param.h>
43 #include <sys/systm.h>
44 #include <sys/bus.h>
45 #include <sys/devmap.h>
46
47 #include <vm/vm.h>
48 #include <vm/pmap.h>
49
50 #include <machine/bus.h>
51 #include <machine/machdep.h>
52 #include <machine/platformvar.h>
53
54 #include <arm/ti/omap4/omap4_machdep.h>
55 #include <arm/ti/omap4/omap4_reg.h>
56 #include <arm/ti/ti_cpuid.h>
57
58 #include "platform_if.h"
59
60 #if defined(SOC_OMAP4)
61 #include "platform_pl310_if.h"
62
63 static platform_attach_t omap4_attach;
64 static platform_devmap_init_t ti_omap4_devmap_init;
65 #endif
66 #if defined(SOC_TI_AM335X)
67 static platform_attach_t ti_am335x_attach;
68 static platform_devmap_init_t ti_am335x_devmap_init;
69 #endif
70 static platform_cpu_reset_t ti_plat_cpu_reset;
71
72 void (*ti_cpu_reset)(void) = NULL;
73
74 int _ti_chip = -1;
75
76 #if defined(SOC_OMAP4)
77 static int
omap4_attach(platform_t plat)78 omap4_attach(platform_t plat)
79 {
80 _ti_chip = CHIP_OMAP_4;
81 return (0);
82 }
83 #endif
84
85 #if defined(SOC_TI_AM335X)
86 static int
ti_am335x_attach(platform_t plat)87 ti_am335x_attach(platform_t plat)
88 {
89 _ti_chip = CHIP_AM335X;
90 return (0);
91 }
92 #endif
93
94 /*
95 * Construct static devmap entries to map out the most frequently used
96 * peripherals using 1mb section mappings.
97 */
98 #if defined(SOC_OMAP4)
99 static int
ti_omap4_devmap_init(platform_t plat)100 ti_omap4_devmap_init(platform_t plat)
101 {
102 devmap_add_entry(0x48000000, 0x01000000); /*16mb L4_PER devices */
103 devmap_add_entry(0x4A000000, 0x01000000); /*16mb L4_CFG devices */
104 return (0);
105 }
106 #endif
107
108 #if defined(SOC_TI_AM335X)
109 static int
ti_am335x_devmap_init(platform_t plat)110 ti_am335x_devmap_init(platform_t plat)
111 {
112
113 devmap_add_entry(0x44C00000, 0x00400000); /* 4mb L4_WKUP devices*/
114 devmap_add_entry(0x47400000, 0x00100000); /* 1mb USB */
115 devmap_add_entry(0x47800000, 0x00100000); /* 1mb mmchs2 */
116 devmap_add_entry(0x48000000, 0x01000000); /*16mb L4_PER devices */
117 devmap_add_entry(0x49000000, 0x00100000); /* 1mb edma3 */
118 devmap_add_entry(0x49800000, 0x00300000); /* 3mb edma3 */
119 devmap_add_entry(0x4A000000, 0x01000000); /*16mb L4_FAST devices*/
120 return (0);
121 }
122 #endif
123
124 static void
ti_plat_cpu_reset(platform_t plat)125 ti_plat_cpu_reset(platform_t plat)
126 {
127 if (ti_cpu_reset)
128 (*ti_cpu_reset)();
129 else
130 printf("no cpu_reset implementation\n");
131 }
132
133 #if defined(SOC_OMAP4)
134 static platform_method_t omap4_methods[] = {
135 PLATFORMMETHOD(platform_attach, omap4_attach),
136 PLATFORMMETHOD(platform_devmap_init, ti_omap4_devmap_init),
137 PLATFORMMETHOD(platform_cpu_reset, ti_plat_cpu_reset),
138
139 #ifdef SMP
140 PLATFORMMETHOD(platform_mp_start_ap, omap4_mp_start_ap),
141 PLATFORMMETHOD(platform_mp_setmaxid, omap4_mp_setmaxid),
142 #endif
143
144 PLATFORMMETHOD(platform_pl310_init, omap4_pl310_init),
145 PLATFORMMETHOD(platform_pl310_write_ctrl, omap4_pl310_write_ctrl),
146 PLATFORMMETHOD(platform_pl310_write_debug, omap4_pl310_write_debug),
147
148 PLATFORMMETHOD_END,
149 };
150 FDT_PLATFORM_DEF(omap4, "omap4", 0, "ti,omap4430", 200);
151 #endif
152
153 #if defined(SOC_TI_AM335X)
154 static platform_method_t am335x_methods[] = {
155 PLATFORMMETHOD(platform_attach, ti_am335x_attach),
156 PLATFORMMETHOD(platform_devmap_init, ti_am335x_devmap_init),
157 PLATFORMMETHOD(platform_cpu_reset, ti_plat_cpu_reset),
158
159 PLATFORMMETHOD_END,
160 };
161
162 FDT_PLATFORM_DEF(am335x, "am335x", 0, "ti,am33xx", 200);
163 #endif
164