ti_machdep.c revision 257660 
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: head/sys/arm/ti/ti_machdep.c 257660 2013-11-04 22:45:26Z ian $");
42
43#define _ARM32_BUS_DMA_PRIVATE
44#include <sys/param.h>
45#include <sys/systm.h>
46#include <sys/bus.h>
47
48#include <vm/vm.h>
49#include <vm/pmap.h>
50
51#include <machine/bus.h>
52#include <machine/devmap.h>
53#include <machine/machdep.h>
54
55#include <arm/ti/omap4/omap4_reg.h>
56
57/* Start of address space used for bootstrap map */
58#define DEVMAP_BOOTSTRAP_MAP_START	0xF0000000
59
60void (*ti_cpu_reset)(void);
61
62vm_offset_t
63initarm_lastaddr(void)
64{
65
66	ti_cpu_reset = NULL;
67	return (DEVMAP_BOOTSTRAP_MAP_START);
68}
69
70void
71initarm_gpio_init(void)
72{
73}
74
75void
76initarm_late_init(void)
77{
78}
79
80#define FDT_DEVMAP_MAX	(2)		// FIXME
81static struct arm_devmap_entry fdt_devmap[FDT_DEVMAP_MAX] = {
82	{ 0, 0, 0, 0, 0, }
83};
84
85
86/*
87 * Construct pmap_devmap[] with DT-derived config data.
88 */
89int
90platform_devmap_init(void)
91{
92	int i = 0;
93#if defined(SOC_OMAP4)
94	fdt_devmap[i].pd_va = 0xF8000000;
95	fdt_devmap[i].pd_pa = 0x48000000;
96	fdt_devmap[i].pd_size = 0x1000000;
97	fdt_devmap[i].pd_prot = VM_PROT_READ | VM_PROT_WRITE;
98	fdt_devmap[i].pd_cache = PTE_DEVICE;
99	i++;
100#elif defined(SOC_TI_AM335X)
101	fdt_devmap[i].pd_va = 0xF4C00000;
102	fdt_devmap[i].pd_pa = 0x44C00000;       /* L4_WKUP */
103	fdt_devmap[i].pd_size = 0x400000;       /* 4 MB */
104	fdt_devmap[i].pd_prot = VM_PROT_READ | VM_PROT_WRITE;
105	fdt_devmap[i].pd_cache = PTE_DEVICE;
106	i++;
107#else
108#error "Unknown SoC"
109#endif
110
111	arm_devmap_register_table(&fdt_devmap[0]);
112	return (0);
113}
114
115struct arm32_dma_range *
116bus_dma_get_range(void)
117{
118
119	return (NULL);
120}
121
122int
123bus_dma_get_range_nb(void)
124{
125
126	return (0);
127}
128
129void
130cpu_reset()
131{
132	if (ti_cpu_reset)
133		(*ti_cpu_reset)();
134	else
135		printf("no cpu_reset implementation\n");
136	printf("Reset failed!\n");
137	while (1);
138}
139