blob: d6e15f71fc09541514b3b803ba2488973b7f6ad6 (
plain) (
blame)
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
|
/*
* linux/arch/arm/mach-pxa/generic.c
*
* Author: Nicolas Pitre
* Created: Jun 15, 2001
* Copyright: MontaVista Software Inc.
*
* Code common to all PXA machines.
*
* 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.
*
* Since this file should be linked before any other machine specific file,
* the __initcall() here will be executed first. This serves as default
* initialization stuff for PXA machines which can be overridden later if
* need be.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <mach/hardware.h>
#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/mach/map.h>
#include <asm/mach-types.h>
#include <mach/reset.h>
#include <mach/gpio.h>
#include <mach/smemc.h>
#include <mach/pxa3xx-regs.h>
#include "generic.h"
void clear_reset_status(unsigned int mask)
{
if (cpu_is_pxa2xx())
pxa2xx_clear_reset_status(mask);
else {
/* RESET_STATUS_* has a 1:1 mapping with ARSR */
ARSR = mask;
}
}
unsigned long get_clock_tick_rate(void)
{
unsigned long clock_tick_rate;
if (cpu_is_pxa25x())
clock_tick_rate = 3686400;
else if (machine_is_mainstone())
clock_tick_rate = 3249600;
else
clock_tick_rate = 3250000;
return clock_tick_rate;
}
EXPORT_SYMBOL(get_clock_tick_rate);
/*
* Get the clock frequency as reflected by CCCR and the turbo flag.
* We assume these values have been applied via a fcs.
* If info is not 0 we also display the current settings.
*/
unsigned int get_clk_frequency_khz(int info)
{
if (cpu_is_pxa25x())
return pxa25x_get_clk_frequency_khz(info);
else if (cpu_is_pxa27x())
return pxa27x_get_clk_frequency_khz(info);
return 0;
}
EXPORT_SYMBOL(get_clk_frequency_khz);
/*
* Intel PXA2xx internal register mapping.
*
* Note: virtual 0xfffe0000-0xffffffff is reserved for the vector table
* and cache flush area.
*/
static struct map_desc common_io_desc[] __initdata = {
{ /* Devs */
.virtual = 0xf2000000,
.pfn = __phys_to_pfn(0x40000000),
.length = 0x02000000,
.type = MT_DEVICE
}, { /* UNCACHED_PHYS_0 */
.virtual = 0xff000000,
.pfn = __phys_to_pfn(0x00000000),
.length = 0x00100000,
.type = MT_DEVICE
}
};
void __init pxa_map_io(void)
{
iotable_init(ARRAY_AND_SIZE(common_io_desc));
}
|
