xref: /freebsd/sys/arm/ti/ti_machdep.c (revision f5f7c05209ca2c3748fd8b27c5e80ffad49120eb)
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("$FreeBSD$");
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/frame.h> /* For trapframe_t, used in <machine/machdep.h> */
53 #include <machine/machdep.h>
54 #include <machine/pmap.h>
55 
56 #include <arm/ti/omap4/omap4_reg.h>
57 
58 /* Start of address space used for bootstrap map */
59 #define DEVMAP_BOOTSTRAP_MAP_START	0xE0000000
60 
61 void (*ti_cpu_reset)(void);
62 
63 vm_offset_t
64 initarm_lastaddr(void)
65 {
66 
67 	ti_cpu_reset = NULL;
68 	return (DEVMAP_BOOTSTRAP_MAP_START - ARM_NOCACHE_KVA_SIZE);
69 }
70 
71 void
72 initarm_gpio_init(void)
73 {
74 }
75 
76 void
77 initarm_late_init(void)
78 {
79 }
80 
81 #define FDT_DEVMAP_MAX	(2)		// FIXME
82 static struct pmap_devmap fdt_devmap[FDT_DEVMAP_MAX] = {
83 	{ 0, 0, 0, 0, 0, }
84 };
85 
86 
87 /*
88  * Construct pmap_devmap[] with DT-derived config data.
89  */
90 int
91 platform_devmap_init(void)
92 {
93 	int i = 0;
94 #if defined(SOC_OMAP4)
95 	fdt_devmap[i].pd_va = 0xE8000000;
96 	fdt_devmap[i].pd_pa = 0x48000000;
97 	fdt_devmap[i].pd_size = 0x1000000;
98 	fdt_devmap[i].pd_prot = VM_PROT_READ | VM_PROT_WRITE;
99 	fdt_devmap[i].pd_cache = PTE_DEVICE;
100 	i++;
101 #elif defined(SOC_TI_AM335X)
102 	fdt_devmap[i].pd_va = 0xE4C00000;
103 	fdt_devmap[i].pd_pa = 0x44C00000;       /* L4_WKUP */
104 	fdt_devmap[i].pd_size = 0x400000;       /* 4 MB */
105 	fdt_devmap[i].pd_prot = VM_PROT_READ | VM_PROT_WRITE;
106 	fdt_devmap[i].pd_cache = PTE_DEVICE;
107 	i++;
108 #else
109 #error "Unknown SoC"
110 #endif
111 
112 	pmap_devmap_bootstrap_table = &fdt_devmap[0];
113 	return (0);
114 }
115 
116 struct arm32_dma_range *
117 bus_dma_get_range(void)
118 {
119 
120 	return (NULL);
121 }
122 
123 int
124 bus_dma_get_range_nb(void)
125 {
126 
127 	return (0);
128 }
129 
130 void
131 cpu_reset()
132 {
133 	if (ti_cpu_reset)
134 		(*ti_cpu_reset)();
135 	else
136 		printf("no cpu_reset implementation\n");
137 	printf("Reset failed!\n");
138 	while (1);
139 }
140