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/ti_cpuid.h>
55
56 #include "platform_if.h"
57
58 #if defined(SOC_TI_AM335X)
59 static platform_attach_t ti_am335x_attach;
60 static platform_devmap_init_t ti_am335x_devmap_init;
61 #endif
62 static platform_cpu_reset_t ti_plat_cpu_reset;
63
64 void (*ti_cpu_reset)(void) = NULL;
65
66 int _ti_chip = -1;
67
68 #if defined(SOC_TI_AM335X)
69 static int
ti_am335x_attach(platform_t plat)70 ti_am335x_attach(platform_t plat)
71 {
72 _ti_chip = CHIP_AM335X;
73 return (0);
74 }
75 #endif
76
77 /*
78 * Construct static devmap entries to map out the most frequently used
79 * peripherals using 1mb section mappings.
80 */
81 #if defined(SOC_TI_AM335X)
82 static int
ti_am335x_devmap_init(platform_t plat)83 ti_am335x_devmap_init(platform_t plat)
84 {
85
86 devmap_add_entry(0x44C00000, 0x00400000); /* 4mb L4_WKUP devices*/
87 devmap_add_entry(0x47400000, 0x00100000); /* 1mb USB */
88 devmap_add_entry(0x47800000, 0x00100000); /* 1mb mmchs2 */
89 devmap_add_entry(0x48000000, 0x01000000); /*16mb L4_PER devices */
90 devmap_add_entry(0x49000000, 0x00100000); /* 1mb edma3 */
91 devmap_add_entry(0x49800000, 0x00300000); /* 3mb edma3 */
92 devmap_add_entry(0x4A000000, 0x01000000); /*16mb L4_FAST devices*/
93 return (0);
94 }
95 #endif
96
97 static void
ti_plat_cpu_reset(platform_t plat)98 ti_plat_cpu_reset(platform_t plat)
99 {
100 if (ti_cpu_reset)
101 (*ti_cpu_reset)();
102 else
103 printf("no cpu_reset implementation\n");
104 }
105
106 #if defined(SOC_TI_AM335X)
107 static platform_method_t am335x_methods[] = {
108 PLATFORMMETHOD(platform_attach, ti_am335x_attach),
109 PLATFORMMETHOD(platform_devmap_init, ti_am335x_devmap_init),
110 PLATFORMMETHOD(platform_cpu_reset, ti_plat_cpu_reset),
111
112 PLATFORMMETHOD_END,
113 };
114
115 FDT_PLATFORM_DEF(am335x, "am335x", 0, "ti,am33xx", 200);
116 #endif
117