ti_machdep.c revision 302408 
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 298854 2016-04-30 17:27:33Z andrew $");
42
43#define _ARM32_BUS_DMA_PRIVATE
44#include <sys/param.h>
45#include <sys/systm.h>
46#include <sys/bus.h>
47#include <sys/devmap.h>
48
49#include <vm/vm.h>
50#include <vm/pmap.h>
51
52#include <machine/bus.h>
53#include <machine/machdep.h>
54#include <machine/platformvar.h>
55
56#include <arm/ti/omap4/omap4_reg.h>
57
58#include "platform_if.h"
59
60void (*ti_cpu_reset)(void) = NULL;
61
62static vm_offset_t
63ti_lastaddr(platform_t plat)
64{
65
66	return (devmap_lastaddr());
67}
68
69/*
70 * Construct static devmap entries to map out the most frequently used
71 * peripherals using 1mb section mappings.
72 */
73#if defined(SOC_OMAP4)
74static int
75ti_omap4_devmap_init(platform_t plat)
76{
77	devmap_add_entry(0x48000000, 0x01000000); /*16mb L4_PER devices */
78	devmap_add_entry(0x4A000000, 0x01000000); /*16mb L4_CFG devices */
79	return (0);
80}
81#endif
82
83#if defined(SOC_TI_AM335X)
84static int
85ti_am335x_devmap_init(platform_t plat)
86{
87
88	devmap_add_entry(0x44C00000, 0x00400000); /* 4mb L4_WKUP devices*/
89	devmap_add_entry(0x47400000, 0x00100000); /* 1mb USB            */
90	devmap_add_entry(0x47800000, 0x00100000); /* 1mb mmchs2         */
91	devmap_add_entry(0x48000000, 0x01000000); /*16mb L4_PER devices */
92	devmap_add_entry(0x49000000, 0x00100000); /* 1mb edma3          */
93	devmap_add_entry(0x49800000, 0x00300000); /* 3mb edma3          */
94	devmap_add_entry(0x4A000000, 0x01000000); /*16mb L4_FAST devices*/
95	return (0);
96}
97#endif
98
99struct arm32_dma_range *
100bus_dma_get_range(void)
101{
102
103	return (NULL);
104}
105
106int
107bus_dma_get_range_nb(void)
108{
109
110	return (0);
111}
112
113void
114cpu_reset()
115{
116	if (ti_cpu_reset)
117		(*ti_cpu_reset)();
118	else
119		printf("no cpu_reset implementation\n");
120	printf("Reset failed!\n");
121	while (1);
122}
123
124#if defined(SOC_OMAP4)
125static platform_method_t omap4_methods[] = {
126	PLATFORMMETHOD(platform_devmap_init,	ti_omap4_devmap_init),
127	PLATFORMMETHOD(platform_lastaddr,	ti_lastaddr),
128
129	PLATFORMMETHOD_END,
130};
131FDT_PLATFORM_DEF(omap4, "omap4", 0, "ti,omap4430", 0);
132#endif
133
134#if defined(SOC_TI_AM335X)
135static platform_method_t am335x_methods[] = {
136	PLATFORMMETHOD(platform_devmap_init,	ti_am335x_devmap_init),
137	PLATFORMMETHOD(platform_lastaddr,	ti_lastaddr),
138
139	PLATFORMMETHOD_END,
140};
141
142FDT_PLATFORM_DEF(am335x, "am335x", 0, "ti,am335x", 0);
143#endif
144