ti_machdep.c revision 331722 
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: stable/11/sys/arm/ti/ti_machdep.c 331722 2018-03-29 02:50:57Z eadler $");
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
59void (*ti_cpu_reset)(void) = NULL;
60
61static vm_offset_t
62ti_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)
73static int
74ti_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)
83static int
84ti_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
98void
99cpu_reset()
100{
101	if (ti_cpu_reset)
102		(*ti_cpu_reset)();
103	else
104		printf("no cpu_reset implementation\n");
105	printf("Reset failed!\n");
106	while (1);
107}
108
109#if defined(SOC_OMAP4)
110static platform_method_t omap4_methods[] = {
111	PLATFORMMETHOD(platform_devmap_init,	ti_omap4_devmap_init),
112	PLATFORMMETHOD(platform_lastaddr,	ti_lastaddr),
113
114	PLATFORMMETHOD_END,
115};
116FDT_PLATFORM_DEF(omap4, "omap4", 0, "ti,omap4430", 0);
117#endif
118
119#if defined(SOC_TI_AM335X)
120static platform_method_t am335x_methods[] = {
121	PLATFORMMETHOD(platform_devmap_init,	ti_am335x_devmap_init),
122	PLATFORMMETHOD(platform_lastaddr,	ti_lastaddr),
123
124	PLATFORMMETHOD_END,
125};
126
127FDT_PLATFORM_DEF(am335x, "am335x", 0, "ti,am335x", 0);
128#endif
129