xref: /freebsd/sys/arm/freescale/imx/imx_machdep.c (revision d2ce15bd43b3a1dcce08eecbff8d5d359946d972)
1 /*-
2  * Copyright (c) 1994-1998 Mark Brinicombe.
3  * Copyright (c) 1994 Brini.
4  * Copyright (c) 2012 The FreeBSD Foundation
5  * All rights reserved.
6  *
7  *
8  * This code is derived from software written for Brini by Mark Brinicombe
9  * Portions of this software were developed by Oleksandr Rybalko
10  * under sponsorship from the FreeBSD Foundation.
11  *
12  * Redistribution and use in source and binary forms, with or without
13  * modification, are permitted provided that the following conditions
14  * are met:
15  * 1. Redistributions of source code must retain the above copyright
16  *    notice, this list of conditions and the following disclaimer.
17  * 2. Redistributions in binary form must reproduce the above copyright
18  *    notice, this list of conditions and the following disclaimer in the
19  *    documentation and/or other materials provided with the distribution.
20  * 3. All advertising materials mentioning features or use of this software
21  *    must display the following acknowledgement:
22  *      This product includes software developed by Brini.
23  * 4. The name of the company nor the name of the author may be used to
24  *    endorse or promote products derived from this software without specific
25  *    prior written permission.
26  *
27  * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
28  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
29  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
30  * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
31  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
32  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
33  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37  * SUCH DAMAGE.
38  *
39  * from: FreeBSD: //depot/projects/arm/src/sys/arm/at91/kb920x_machdep.c, rev 45
40  */
41 
42 #include "opt_platform.h"
43 
44 #include <sys/cdefs.h>
45 __FBSDID("$FreeBSD$");
46 
47 #define _ARM32_BUS_DMA_PRIVATE
48 #include <sys/param.h>
49 #include <sys/systm.h>
50 #include <sys/bus.h>
51 #include <sys/reboot.h>
52 
53 #include <vm/vm.h>
54 #include <vm/pmap.h>
55 
56 #include <machine/bus.h>
57 #include <machine/frame.h> /* For trapframe_t, used in <machine/machdep.h> */
58 #include <machine/machdep.h>
59 #include <machine/pmap.h>
60 
61 #include <dev/fdt/fdt_common.h>
62 
63 #define	IMX51_DEV_VIRT_BASE	0xe0000000
64 vm_offset_t
65 initarm_lastaddr(void)
66 {
67 
68 	boothowto |= RB_VERBOSE|RB_MULTIPLE;
69 	bootverbose = 1;
70 
71 	if (fdt_immr_addr(IMX51_DEV_VIRT_BASE) != 0)
72 		while (1);
73 
74 	/* Platform-specific initialisation */
75 	return (fdt_immr_va - ARM_NOCACHE_KVA_SIZE);
76 }
77 
78 /*
79  * Set initial values of GPIO output ports
80  */
81 void
82 initarm_gpio_init(void)
83 {
84 
85 }
86 
87 void
88 initarm_late_init(void)
89 {
90 
91 }
92 
93 #define FDT_DEVMAP_MAX	2
94 static struct pmap_devmap fdt_devmap[FDT_DEVMAP_MAX] = {
95 	{ 0, 0, 0, 0, 0, },
96 	{ 0, 0, 0, 0, 0, }
97 };
98 
99 /*
100  * Construct pmap_devmap[] with DT-derived config data.
101  */
102 int
103 platform_devmap_init(void)
104 {
105 
106 	/*
107 	 * Map segment where UART1 and UART2 located.
108 	 */
109 	fdt_devmap[0].pd_va = IMX51_DEV_VIRT_BASE + 0x03f00000;
110 	fdt_devmap[0].pd_pa = 0x73f00000;
111 	fdt_devmap[0].pd_size = 0x00100000;
112 	fdt_devmap[0].pd_prot = VM_PROT_READ | VM_PROT_WRITE;
113 	fdt_devmap[0].pd_cache = PTE_NOCACHE;
114 
115 	pmap_devmap_bootstrap_table = &fdt_devmap[0];
116 	return (0);
117 }
118 
119 struct arm32_dma_range *
120 bus_dma_get_range(void)
121 {
122 
123 	return (NULL);
124 }
125 
126 int
127 bus_dma_get_range_nb(void)
128 {
129 
130 	return (0);
131 }
132 
133 void
134 cpu_reset(void)
135 {
136 
137 	printf("Reset ...\n");
138 	/* Clear n_reset flag */
139 	*((volatile u_int16_t *)(IMX51_DEV_VIRT_BASE + 0x03f98000)) =
140 	    (u_int16_t)0;
141 	while (1);
142 }
143