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
|
/*-
* Copyright (c) 2013 Ian Lepore <ian@freebsd.org>
* 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 "opt_platform.h"
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/reboot.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/bus.h>
#include <machine/devmap.h>
#include <arm/freescale/imx/imx6_anatopreg.h>
#include <arm/freescale/imx/imx6_anatopvar.h>
#include <arm/freescale/imx/imx_machdep.h>
/*
* Set up static device mappings. Note that for imx this is called from
* initarm_lastaddr() so that it can return the lowest address used for static
* device mapping, maximizing kva space.
*
* This attempts to cover the most-used devices with 1MB section mappings, which
* is good for performance (uses fewer TLB entries for device access).
*
* ARMMP covers the interrupt controller, MPCore timers, global timer, and the
* L2 cache controller. Most of the 1MB range is unused reserved space.
*
* AIPS1/AIPS2 cover most of the on-chip devices such as uart, spi, i2c, etc.
*
* Notably not mapped right now are HDMI, GPU, and other devices below ARMMP in
* the memory map. When we get support for graphics it might make sense to
* static map some of that area. Be careful with other things in that area such
* as OCRAM that probably shouldn't be mapped as PTE_DEVICE memory.
*/
void
imx_devmap_init(void)
{
const uint32_t IMX6_ARMMP_PHYS = 0x00a00000;
const uint32_t IMX6_ARMMP_SIZE = 0x00100000;
const uint32_t IMX6_AIPS1_PHYS = 0x02000000;
const uint32_t IMX6_AIPS1_SIZE = 0x00100000;
const uint32_t IMX6_AIPS2_PHYS = 0x02100000;
const uint32_t IMX6_AIPS2_SIZE = 0x00100000;
imx_devmap_addentry(IMX6_ARMMP_PHYS, IMX6_ARMMP_SIZE);
imx_devmap_addentry(IMX6_AIPS1_PHYS, IMX6_AIPS1_SIZE);
imx_devmap_addentry(IMX6_AIPS2_PHYS, IMX6_AIPS2_SIZE);
}
void
cpu_reset(void)
{
const uint32_t IMX6_WDOG_CR_PHYS = 0x020bc000;
imx_wdog_cpu_reset(IMX6_WDOG_CR_PHYS);
}
/*
* Determine what flavor of imx6 we're running on.
*
* This code is based on the way u-boot does it. Information found on the web
* indicates that Freescale themselves were the original source of this logic,
* including the strange check for number of CPUs in the SCU configuration
* register, which is apparently needed on some revisions of the SOLO.
*
* According to the documentation, there is such a thing as an i.MX6 Dual
* (non-lite flavor). However, Freescale doesn't seem to have assigned it a
* number or provided any logic to handle it in their detection code.
*
* Note that the ANALOG_DIGPROG and SCU configuration registers are not
* documented in the chip reference manual. (SCU configuration is mentioned,
* but not mapped out in detail.) I think the bottom two bits of the scu config
* register may be ncpu-1.
*
* This hasn't been tested yet on a dual[-lite].
*
* On a solo:
* digprog = 0x00610001
* hwsoc = 0x00000062
* scu config = 0x00000500
* On a quad:
* digprog = 0x00630002
* hwsoc = 0x00000063
* scu config = 0x00005503
*/
u_int imx_soc_type()
{
uint32_t digprog, hwsoc;
uint32_t *pcr;
const uint32_t HWSOC_MX6SL = 0x60;
const uint32_t HWSOC_MX6DL = 0x61;
const uint32_t HWSOC_MX6SOLO = 0x62;
const uint32_t HWSOC_MX6Q = 0x63;
const vm_offset_t SCU_CONFIG_PHYSADDR = 0x00a00004;
digprog = imx6_anatop_read_4(IMX6_ANALOG_DIGPROG_SL);
hwsoc = (digprog >> IMX6_ANALOG_DIGPROG_SOCTYPE_SHIFT) &
IMX6_ANALOG_DIGPROG_SOCTYPE_MASK;
if (hwsoc != HWSOC_MX6SL) {
digprog = imx6_anatop_read_4(IMX6_ANALOG_DIGPROG);
hwsoc = (digprog & IMX6_ANALOG_DIGPROG_SOCTYPE_MASK) >>
IMX6_ANALOG_DIGPROG_SOCTYPE_SHIFT;
/*printf("digprog = 0x%08x\n", digprog);*/
if (hwsoc == HWSOC_MX6DL) {
pcr = arm_devmap_ptov(SCU_CONFIG_PHYSADDR, 4);
if (pcr != NULL) {
/*printf("scu config = 0x%08x\n", *pcr);*/
if ((*pcr & 0x03) == 0) {
hwsoc = HWSOC_MX6SOLO;
}
}
}
}
/* printf("hwsoc 0x%08x\n", hwsoc); */
switch (hwsoc) {
case HWSOC_MX6SL:
return (IMXSOC_6SL);
case HWSOC_MX6SOLO:
return (IMXSOC_6S);
case HWSOC_MX6DL:
return (IMXSOC_6DL);
case HWSOC_MX6Q :
return (IMXSOC_6Q);
default:
printf("imx_soc_type: Don't understand hwsoc 0x%02x, "
"digprog 0x%08x; assuming IMXSOC_6Q\n", hwsoc, digprog);
break;
}
return (IMXSOC_6Q);
}
|
