1 /*-
2 * Copyright 2013-2015 John Wehle <john@feith.com>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include "opt_global.h"
28
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31
32 #include "opt_platform.h"
33
34 #define _ARM32_BUS_DMA_PRIVATE
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/bus.h>
38
39 #include <vm/vm.h>
40 #include <vm/pmap.h>
41
42 #include <machine/bus.h>
43 #include <machine/cpufunc.h>
44 #include <machine/devmap.h>
45 #include <machine/intr.h>
46 #include <machine/machdep.h>
47 #include <machine/platform.h>
48
49 #include <dev/fdt/fdt_common.h>
50
51 #include <arm/amlogic/aml8726/aml8726_soc.h>
52 #include <arm/amlogic/aml8726/aml8726_clkmsr.h>
53
54 #if defined(SOCDEV_PA) && defined(SOCDEV_VA)
55 vm_offset_t aml8726_aobus_kva_base = SOCDEV_VA;
56 #else
57 vm_offset_t aml8726_aobus_kva_base;
58 #endif
59
60 static void
aml8726_fixup_busfreq()61 aml8726_fixup_busfreq()
62 {
63 phandle_t node;
64 pcell_t freq, prop;
65 ssize_t len;
66
67 /*
68 * Set the bus-frequency for the SoC simple-bus if it
69 * needs updating (meaning the current frequency is zero).
70 */
71
72 if ((freq = aml8726_clkmsr_bus_frequency()) == 0 ||
73 (node = OF_finddevice("/soc")) == 0 ||
74 fdt_is_compatible_strict(node, "simple-bus") == 0)
75 while (1);
76
77 freq = cpu_to_fdt32(freq);
78
79 len = OF_getencprop(node, "bus-frequency", &prop, sizeof(prop));
80 if ((len / sizeof(prop)) == 1 && prop == 0)
81 OF_setprop(node, "bus-frequency", (void *)&freq, sizeof(freq));
82 }
83
84 vm_offset_t
platform_lastaddr(void)85 platform_lastaddr(void)
86 {
87
88 return (arm_devmap_lastaddr());
89 }
90
91 void
platform_probe_and_attach(void)92 platform_probe_and_attach(void)
93 {
94 }
95
96 void
platform_gpio_init(void)97 platform_gpio_init(void)
98 {
99
100 /*
101 * The UART console driver used for debugging early boot code
102 * needs to know the virtual base address of the aobus. It's
103 * expected to equal SOCDEV_VA prior to initarm calling setttb
104 * ... afterwards it needs to be updated due to the new page
105 * tables.
106 *
107 * This means there's a deadzone in initarm between setttb
108 * and platform_gpio_init during which printf can't be used.
109 */
110 aml8726_aobus_kva_base =
111 (vm_offset_t)arm_devmap_ptov(0xc8100000, 0x100000);
112
113 /*
114 * The hardware mux used by clkmsr is unique to the SoC (though
115 * currently clk81 is at a fixed location, however that might
116 * change in the future).
117 */
118 aml8726_identify_soc();
119
120 /*
121 * My aml8726-m3 development box which identifies the CPU as
122 * a Cortex A9-r2 rev 4 randomly locks up during boot when WFI
123 * is used.
124 */
125 switch (aml8726_soc_hw_rev) {
126 case AML_SOC_HW_REV_M3:
127 cpufuncs.cf_sleep = (void *)cpufunc_nullop;
128 break;
129 default:
130 break;
131 }
132
133 /*
134 * This FDT fixup should arguably be called through fdt_fixup_table,
135 * however currently there's no mechanism to specify a fixup which
136 * should always be invoked.
137 *
138 * It needs to be called prior to the console being initialized which
139 * is why it's called here, rather than from platform_late_init.
140 */
141 aml8726_fixup_busfreq();
142 }
143
144 void
platform_late_init(void)145 platform_late_init(void)
146 {
147 }
148
149 /*
150 * Construct static devmap entries to map out the core
151 * peripherals using 1mb section mappings.
152 */
153 int
platform_devmap_init(void)154 platform_devmap_init(void)
155 {
156
157 arm_devmap_add_entry(0xc1100000, 0x200000); /* cbus */
158 arm_devmap_add_entry(0xc4200000, 0x100000); /* pl310 */
159 arm_devmap_add_entry(0xc4300000, 0x100000); /* periph */
160 arm_devmap_add_entry(0xc8000000, 0x100000); /* apbbus */
161 arm_devmap_add_entry(0xc8100000, 0x100000); /* aobus */
162 arm_devmap_add_entry(0xc9000000, 0x800000); /* ahbbus */
163 arm_devmap_add_entry(0xd9000000, 0x100000); /* ahb */
164 arm_devmap_add_entry(0xda000000, 0x100000); /* secbus */
165
166 return (0);
167 }
168
169 struct arm32_dma_range *
bus_dma_get_range(void)170 bus_dma_get_range(void)
171 {
172
173 return (NULL);
174 }
175
176 int
bus_dma_get_range_nb(void)177 bus_dma_get_range_nb(void)
178 {
179
180 return (0);
181 }
182
183 struct fdt_fixup_entry fdt_fixup_table[] = {
184 { NULL, NULL }
185 };
186
187 #ifndef DEV_GIC
188 static int
fdt_pic_decode_ic(phandle_t node,pcell_t * intr,int * interrupt,int * trig,int * pol)189 fdt_pic_decode_ic(phandle_t node, pcell_t *intr, int *interrupt, int *trig,
190 int *pol)
191 {
192
193 /*
194 * The single core chips have just an Amlogic PIC.
195 */
196 if (!fdt_is_compatible_strict(node, "amlogic,aml8726-pic"))
197 return (ENXIO);
198
199 *interrupt = fdt32_to_cpu(intr[1]);
200 *trig = INTR_TRIGGER_EDGE;
201 *pol = INTR_POLARITY_HIGH;
202
203 return (0);
204 }
205 #endif
206
207 fdt_pic_decode_t fdt_pic_table[] = {
208 #ifdef DEV_GIC
209 &gic_decode_fdt,
210 #else
211 &fdt_pic_decode_ic,
212 #endif
213 NULL
214 };
215