1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
|
/*-
* Copyright (c) 2010 Aleksandr Rybalko.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/interrupt.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/rman.h>
#include <sys/malloc.h>
#include <machine/bus.h>
#include <mips/rt305x/rt305xreg.h>
#include <mips/rt305x/rt305x_sysctlvar.h>
static int rt305x_sysctl_probe(device_t);
static int rt305x_sysctl_attach(device_t);
static int rt305x_sysctl_detach(device_t);
static struct rt305x_sysctl_softc *rt305x_sysctl_softc = NULL;
static void
rt305x_sysctl_dump_config(device_t dev)
{
uint32_t val;
#define DUMPREG(r) \
val = rt305x_sysctl_get(r); printf(" " #r "=%#08x\n", val)
val = rt305x_sysctl_get(SYSCTL_CHIPID0_3);
printf("\tChip ID: \"%c%c%c%c",
(val >> 0 ) & 0xff,
(val >> 8 ) & 0xff,
(val >> 16) & 0xff,
(val >> 24) & 0xff);
val = rt305x_sysctl_get(SYSCTL_CHIPID4_7);
printf("%c%c%c%c\"\n",
(val >> 0 ) & 0xff,
(val >> 8 ) & 0xff,
(val >> 16) & 0xff,
(val >> 24) & 0xff);
DUMPREG(SYSCTL_SYSCFG);
if ( val & SYSCTL_SYSCFG_INIC_EE_SDRAM)
printf("\tGet SDRAM config from EEPROM\n");
if ( val & SYSCTL_SYSCFG_INIC_8MB_SDRAM)
printf("\tBootstrap flag is set\n");
printf("\tGE0 mode %u\n",
((val & SYSCTL_SYSCFG_GE0_MODE_MASK) >>
SYSCTL_SYSCFG_GE0_MODE_SHIFT));
if ( val & SYSCTL_SYSCFG_BOOT_ADDR_1F00)
printf("\tBoot from 0x1f000000\n");
if ( val & SYSCTL_SYSCFG_BYPASS_PLL)
printf("\tBypass PLL\n");
if ( val & SYSCTL_SYSCFG_BIG_ENDIAN)
printf("\tBig Endian\n");
if ( val & SYSCTL_SYSCFG_CPU_CLK_SEL_384MHZ)
printf("\tClock is 384Mhz\n");
printf("\tBoot from %u\n",
((val & SYSCTL_SYSCFG_BOOT_FROM_MASK) >>
SYSCTL_SYSCFG_BOOT_FROM_SHIFT));
printf("\tBootstrap test code %u\n",
((val & SYSCTL_SYSCFG_TEST_CODE_MASK) >>
SYSCTL_SYSCFG_TEST_CODE_SHIFT));
printf("\tSRAM_CS mode %u\n",
((val & SYSCTL_SYSCFG_SRAM_CS_MODE_MASK) >>
SYSCTL_SYSCFG_SRAM_CS_MODE_SHIFT));
printf("\t%umA SDRAM_CLK driving\n",
(val & SYSCTL_SYSCFG_SDRAM_CLK_DRV)?12:8);
DUMPREG(SYSCTL_CLKCFG0);
printf("\tSDRAM_CLK_SKEW %uns\n", (val >> 30) & 0x03);
DUMPREG(SYSCTL_CLKCFG1);
if ( val & SYSCTL_CLKCFG1_PBUS_DIV_CLK_BY2)
printf("\tPbus clock is 1/2 of System clock\n");
if ( val & SYSCTL_CLKCFG1_OTG_CLK_EN)
printf("\tUSB OTG clock is enabled\n");
if ( val & SYSCTL_CLKCFG1_I2S_CLK_EN)
printf("\tI2S clock is enabled\n");
printf("\tI2S clock is %s\n",
(val & SYSCTL_CLKCFG1_I2S_CLK_SEL_EXT)?
"external":"internal 15.625Mhz");
printf("\tI2S clock divider %u\n",
((val & SYSCTL_CLKCFG1_I2S_CLK_DIV_MASK) >>
SYSCTL_CLKCFG1_I2S_CLK_DIV_SHIFT));
if ( val & SYSCTL_CLKCFG1_PCM_CLK_EN)
printf("\tPCM clock is enabled\n");
printf("\tPCM clock is %s\n",
(val & SYSCTL_CLKCFG1_PCM_CLK_SEL_EXT)?
"external":"internal 15.625Mhz");
printf("\tPCM clock divider %u\n",
((val & SYSCTL_CLKCFG1_PCM_CLK_DIV_MASK) >>
SYSCTL_CLKCFG1_PCM_CLK_DIV_SHIFT));
DUMPREG(SYSCTL_GPIOMODE);
#undef DUMPREG
return;
}
static int
rt305x_sysctl_probe(device_t dev)
{
device_set_desc(dev, "RT305X System Control driver");
return (0);
}
static int
rt305x_sysctl_attach(device_t dev)
{
struct rt305x_sysctl_softc *sc = device_get_softc(dev);
int error = 0;
KASSERT((device_get_unit(dev) == 0),
("rt305x_sysctl: Only one sysctl module supported"));
if (rt305x_sysctl_softc != NULL)
return (ENXIO);
rt305x_sysctl_softc = sc;
/* Map control/status registers. */
sc->mem_rid = 0;
sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&sc->mem_rid, RF_ACTIVE);
if (sc->mem_res == NULL) {
device_printf(dev, "couldn't map memory\n");
error = ENXIO;
rt305x_sysctl_detach(dev);
return(error);
}
#ifdef notyet
sc->irq_rid = 0;
if ((sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
&sc->irq_rid, RF_SHAREABLE | RF_ACTIVE)) == NULL) {
device_printf(dev, "unable to allocate IRQ resource\n");
return (ENXIO);
}
if ((bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC,
rt305x_sysctl_intr, NULL, sc, &sc->sysctl_ih))) {
device_printf(dev,
"WARNING: unable to register interrupt handler\n");
return (ENXIO);
}
#endif
rt305x_sysctl_dump_config(dev);
return (bus_generic_attach(dev));
}
static int
rt305x_sysctl_detach(device_t dev)
{
struct rt305x_sysctl_softc *sc = device_get_softc(dev);
bus_generic_detach(dev);
if (sc->mem_res)
bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid,
sc->mem_res);
#ifdef notyet
if (sc->irq_res)
bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid,
sc->irq_res);
#endif
return(0);
}
#ifdef notyet
static int
rt305x_sysctl_intr(void *arg)
{
return (FILTER_HANDLED);
}
#endif
uint32_t
rt305x_sysctl_get(uint32_t reg)
{
struct rt305x_sysctl_softc *sc = rt305x_sysctl_softc;
return (bus_read_4(sc->mem_res, reg));
}
void
rt305x_sysctl_set(uint32_t reg, uint32_t val)
{
struct rt305x_sysctl_softc *sc = rt305x_sysctl_softc;
bus_write_4(sc->mem_res, reg, val);
return;
}
static device_method_t rt305x_sysctl_methods[] = {
DEVMETHOD(device_probe, rt305x_sysctl_probe),
DEVMETHOD(device_attach, rt305x_sysctl_attach),
DEVMETHOD(device_detach, rt305x_sysctl_detach),
{0, 0},
};
static driver_t rt305x_sysctl_driver = {
"rt305x_sysctl",
rt305x_sysctl_methods,
sizeof(struct rt305x_sysctl_softc),
};
static devclass_t rt305x_sysctl_devclass;
DRIVER_MODULE(rt305x_sysctl, obio, rt305x_sysctl_driver, rt305x_sysctl_devclass, 0, 0);
|