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
|
/*
* Atheros AR71XX/AR724X/AR913X specific setup
*
* Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* Parts of this file are based on Atheros' 2.6.15 BSP
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/bootmem.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <asm/bootinfo.h>
#include <asm/time.h> /* for mips_hpt_frequency */
#include <asm/reboot.h> /* for _machine_{restart,halt} */
#include <asm/mips_machine.h>
#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ar71xx_regs.h>
#include "common.h"
#include "dev-common.h"
#include "machtypes.h"
#define ATH79_SYS_TYPE_LEN 64
#define AR71XX_BASE_FREQ 40000000
#define AR724X_BASE_FREQ 5000000
#define AR913X_BASE_FREQ 5000000
static char ath79_sys_type[ATH79_SYS_TYPE_LEN];
static void ath79_restart(char *command)
{
ath79_device_reset_set(AR71XX_RESET_FULL_CHIP);
for (;;)
if (cpu_wait)
cpu_wait();
}
static void ath79_halt(void)
{
while (1)
cpu_wait();
}
static void __init ath79_detect_mem_size(void)
{
unsigned long size;
for (size = ATH79_MEM_SIZE_MIN; size < ATH79_MEM_SIZE_MAX;
size <<= 1) {
if (!memcmp(ath79_detect_mem_size,
ath79_detect_mem_size + size, 1024))
break;
}
add_memory_region(0, size, BOOT_MEM_RAM);
}
static void __init ath79_detect_sys_type(void)
{
char *chip = "????";
u32 id;
u32 major;
u32 minor;
u32 rev = 0;
id = ath79_reset_rr(AR71XX_RESET_REG_REV_ID);
major = id & REV_ID_MAJOR_MASK;
switch (major) {
case REV_ID_MAJOR_AR71XX:
minor = id & AR71XX_REV_ID_MINOR_MASK;
rev = id >> AR71XX_REV_ID_REVISION_SHIFT;
rev &= AR71XX_REV_ID_REVISION_MASK;
switch (minor) {
case AR71XX_REV_ID_MINOR_AR7130:
ath79_soc = ATH79_SOC_AR7130;
chip = "7130";
break;
case AR71XX_REV_ID_MINOR_AR7141:
ath79_soc = ATH79_SOC_AR7141;
chip = "7141";
break;
case AR71XX_REV_ID_MINOR_AR7161:
ath79_soc = ATH79_SOC_AR7161;
chip = "7161";
break;
}
break;
case REV_ID_MAJOR_AR7240:
ath79_soc = ATH79_SOC_AR7240;
chip = "7240";
rev = (id & AR724X_REV_ID_REVISION_MASK);
break;
case REV_ID_MAJOR_AR7241:
ath79_soc = ATH79_SOC_AR7241;
chip = "7241";
rev = (id & AR724X_REV_ID_REVISION_MASK);
break;
case REV_ID_MAJOR_AR7242:
ath79_soc = ATH79_SOC_AR7242;
chip = "7242";
rev = (id & AR724X_REV_ID_REVISION_MASK);
break;
case REV_ID_MAJOR_AR913X:
minor = id & AR913X_REV_ID_MINOR_MASK;
rev = id >> AR913X_REV_ID_REVISION_SHIFT;
rev &= AR913X_REV_ID_REVISION_MASK;
switch (minor) {
case AR913X_REV_ID_MINOR_AR9130:
ath79_soc = ATH79_SOC_AR9130;
chip = "9130";
break;
case AR913X_REV_ID_MINOR_AR9132:
ath79_soc = ATH79_SOC_AR9132;
chip = "9132";
break;
}
break;
default:
panic("ath79: unknown SoC, id:0x%08x\n", id);
}
sprintf(ath79_sys_type, "Atheros AR%s rev %u", chip, rev);
pr_info("SoC: %s\n", ath79_sys_type);
}
const char *get_system_type(void)
{
return ath79_sys_type;
}
unsigned int __cpuinit get_c0_compare_int(void)
{
return CP0_LEGACY_COMPARE_IRQ;
}
void __init plat_mem_setup(void)
{
set_io_port_base(KSEG1);
ath79_reset_base = ioremap_nocache(AR71XX_RESET_BASE,
AR71XX_RESET_SIZE);
ath79_pll_base = ioremap_nocache(AR71XX_PLL_BASE,
AR71XX_PLL_SIZE);
ath79_ddr_base = ioremap_nocache(AR71XX_DDR_CTRL_BASE,
AR71XX_DDR_CTRL_SIZE);
ath79_detect_sys_type();
ath79_detect_mem_size();
ath79_clocks_init();
_machine_restart = ath79_restart;
_machine_halt = ath79_halt;
pm_power_off = ath79_halt;
}
void __init plat_time_init(void)
{
struct clk *clk;
clk = clk_get(NULL, "cpu");
if (IS_ERR(clk))
panic("unable to get CPU clock, err=%ld", PTR_ERR(clk));
mips_hpt_frequency = clk_get_rate(clk) / 2;
}
static int __init ath79_setup(void)
{
ath79_gpio_init();
ath79_register_uart();
ath79_register_wdt();
mips_machine_setup();
return 0;
}
arch_initcall(ath79_setup);
static void __init ath79_generic_init(void)
{
/* Nothing to do */
}
MIPS_MACHINE(ATH79_MACH_GENERIC,
"Generic",
"Generic AR71XX/AR724X/AR913X based board",
ath79_generic_init);
|
