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_ddb.h"
39 #include "opt_platform.h"
40
41 #include <sys/cdefs.h>
42 __FBSDID("$FreeBSD: stable/10/sys/arm/lpc/lpc_machdep.c 266084 2014-05-14 19:18:58Z ian $");
43
44 #define _ARM32_BUS_DMA_PRIVATE
45 #include <sys/param.h>
46 #include <sys/systm.h>
47 #include <sys/bus.h>
48
49 #include <vm/vm.h>
50 #include <vm/pmap.h>
51
52 #include <machine/bus.h>
53 #include <machine/fdt.h>
54 #include <machine/devmap.h>
55 #include <machine/machdep.h>
56
57 #include <arm/lpc/lpcreg.h>
58 #include <arm/lpc/lpcvar.h>
59
60 #include <dev/fdt/fdt_common.h>
61
62 vm_offset_t
initarm_lastaddr(void)63 initarm_lastaddr(void)
64 {
65
66 return (arm_devmap_lastaddr());
67 }
68
69 void
initarm_early_init(void)70 initarm_early_init(void)
71 {
72 }
73
74 void
initarm_gpio_init(void)75 initarm_gpio_init(void)
76 {
77
78 /*
79 * Set initial values of GPIO output ports
80 */
81 platform_gpio_init();
82 }
83
84 void
initarm_late_init(void)85 initarm_late_init(void)
86 {
87 }
88
89 /*
90 * Add a single static device mapping.
91 * The values used were taken from the ranges property of the SoC node in the
92 * dts file when this code was converted to arm_devmap_add_entry().
93 */
94 int
initarm_devmap_init(void)95 initarm_devmap_init(void)
96 {
97
98 arm_devmap_add_entry(LPC_DEV_PHYS_BASE, LPC_DEV_SIZE);
99 return (0);
100 }
101
102 struct arm32_dma_range *
bus_dma_get_range(void)103 bus_dma_get_range(void)
104 {
105
106 return (NULL);
107 }
108
109 int
bus_dma_get_range_nb(void)110 bus_dma_get_range_nb(void)
111 {
112
113 return (0);
114 }
115
116 void
cpu_reset(void)117 cpu_reset(void)
118 {
119 bus_space_tag_t bst;
120 bus_space_handle_t bsh;
121
122 bst = fdtbus_bs_tag;
123
124 /* Enable WDT */
125 bus_space_map(bst, LPC_CLKPWR_PHYS_BASE, LPC_CLKPWR_SIZE, 0, &bsh);
126 bus_space_write_4(bst, bsh, LPC_CLKPWR_TIMCLK_CTRL,
127 LPC_CLKPWR_TIMCLK_CTRL_WATCHDOG);
128 bus_space_unmap(bst, bsh, LPC_CLKPWR_SIZE);
129
130 /* Instant assert of RESETOUT_N with pulse length 1ms */
131 bus_space_map(bst, LPC_WDTIM_PHYS_BASE, LPC_WDTIM_SIZE, 0, &bsh);
132 bus_space_write_4(bst, bsh, LPC_WDTIM_PULSE, 13000);
133 bus_space_write_4(bst, bsh, LPC_WDTIM_MCTRL, 0x70);
134 bus_space_unmap(bst, bsh, LPC_WDTIM_SIZE);
135
136 for (;;)
137 continue;
138 }
139
140