1/*
  2 *  linux/arch/arm/mach-pxa/generic.c
  3 *
  4 *  Author:	Nicolas Pitre
  5 *  Created:	Jun 15, 2001
  6 *  Copyright:	MontaVista Software Inc.
  7 *
  8 * Code common to all PXA machines.
  9 *
 10 * This program is free software; you can redistribute it and/or modify
 11 * it under the terms of the GNU General Public License version 2 as
 12 * published by the Free Software Foundation.
 13 *
 14 * Since this file should be linked before any other machine specific file,
 15 * the __initcall() here will be executed first.  This serves as default
 16 * initialization stuff for PXA machines which can be overridden later if
 17 * need be.
 18 */
 19#include <linux/gpio.h>
 20#include <linux/module.h>
 21#include <linux/kernel.h>
 22#include <linux/init.h>
 23
 24#include <mach/hardware.h>
 25#include <asm/mach/map.h>
 26#include <asm/mach-types.h>
 27
 28#include <mach/irqs.h>
 29#include <mach/reset.h>
 30#include <mach/smemc.h>
 31#include <mach/pxa3xx-regs.h>
 32
 33#include "generic.h"
 34#include <clocksource/pxa.h>
 35
 36void clear_reset_status(unsigned int mask)
 37{
 38	if (cpu_is_pxa2xx())
 39		pxa2xx_clear_reset_status(mask);
 40	else {
 41		/* RESET_STATUS_* has a 1:1 mapping with ARSR */
 42		ARSR = mask;
 43	}
 44}
 45
 46unsigned long get_clock_tick_rate(void)
 47{
 48	unsigned long clock_tick_rate;
 49
 50	if (cpu_is_pxa25x())
 51		clock_tick_rate = 3686400;
 52	else if (machine_is_mainstone())
 53		clock_tick_rate = 3249600;
 54	else
 55		clock_tick_rate = 3250000;
 56
 57	return clock_tick_rate;
 58}
 59EXPORT_SYMBOL(get_clock_tick_rate);
 60
 61/*
 62 * For non device-tree builds, keep legacy timer init
 63 */
 64void __init pxa_timer_init(void)
 65{
 66	if (cpu_is_pxa25x())
 67		pxa25x_clocks_init();
 68	if (cpu_is_pxa27x())
 69		pxa27x_clocks_init();
 70	if (cpu_is_pxa3xx())
 71		pxa3xx_clocks_init();
 72	pxa_timer_nodt_init(IRQ_OST0, io_p2v(0x40a00000),
 73			    get_clock_tick_rate());
 74}
 75
 76/*
 77 * Get the clock frequency as reflected by CCCR and the turbo flag.
 78 * We assume these values have been applied via a fcs.
 79 * If info is not 0 we also display the current settings.
 80 */
 81unsigned int get_clk_frequency_khz(int info)
 82{
 83	if (cpu_is_pxa25x())
 84		return pxa25x_get_clk_frequency_khz(info);
 85	else if (cpu_is_pxa27x())
 86		return pxa27x_get_clk_frequency_khz(info);
 87	return 0;
 88}
 89EXPORT_SYMBOL(get_clk_frequency_khz);
 90
 91/*
 92 * Intel PXA2xx internal register mapping.
 93 *
 94 * Note: virtual 0xfffe0000-0xffffffff is reserved for the vector table
 95 *       and cache flush area.
 96 */
 97static struct map_desc common_io_desc[] __initdata = {
 98  	{	/* Devs */
 99		.virtual	= (unsigned long)PERIPH_VIRT,
100		.pfn		= __phys_to_pfn(PERIPH_PHYS),
101		.length		= PERIPH_SIZE,
102		.type		= MT_DEVICE
103	}
104};
105
106void __init pxa_map_io(void)
107{
108	debug_ll_io_init();
109	iotable_init(ARRAY_AND_SIZE(common_io_desc));
110}

 1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 *  linux/arch/arm/mach-pxa/generic.c
 4 *
 5 *  Author:	Nicolas Pitre
 6 *  Created:	Jun 15, 2001
 7 *  Copyright:	MontaVista Software Inc.
 8 *
 9 * Code common to all PXA machines.
10 *
 
 
 
 
11 * Since this file should be linked before any other machine specific file,
12 * the __initcall() here will be executed first.  This serves as default
13 * initialization stuff for PXA machines which can be overridden later if
14 * need be.
15 */
16#include <linux/gpio.h>
17#include <linux/module.h>
18#include <linux/kernel.h>
19#include <linux/init.h>
20
21#include <mach/hardware.h>
22#include <asm/mach/map.h>
23#include <asm/mach-types.h>
24
25#include <mach/irqs.h>
26#include <mach/reset.h>
27#include <mach/smemc.h>
28#include <mach/pxa3xx-regs.h>
29
30#include "generic.h"
31#include <clocksource/pxa.h>
32
33void clear_reset_status(unsigned int mask)
34{
35	if (cpu_is_pxa2xx())
36		pxa2xx_clear_reset_status(mask);
37	else {
38		/* RESET_STATUS_* has a 1:1 mapping with ARSR */
39		ARSR = mask;
40	}
41}
42
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
43/*
44 * For non device-tree builds, keep legacy timer init
45 */
46void __init pxa_timer_init(void)
47{
48	if (cpu_is_pxa25x())
49		pxa25x_clocks_init();
50	if (cpu_is_pxa27x())
51		pxa27x_clocks_init();
52	if (cpu_is_pxa3xx())
53		pxa3xx_clocks_init();
54	pxa_timer_nodt_init(IRQ_OST0, io_p2v(0x40a00000));
 
55}
56
57/*
58 * Get the clock frequency as reflected by CCCR and the turbo flag.
59 * We assume these values have been applied via a fcs.
60 * If info is not 0 we also display the current settings.
61 */
62unsigned int get_clk_frequency_khz(int info)
63{
64	if (cpu_is_pxa25x())
65		return pxa25x_get_clk_frequency_khz(info);
66	else if (cpu_is_pxa27x())
67		return pxa27x_get_clk_frequency_khz(info);
68	return 0;
69}
70EXPORT_SYMBOL(get_clk_frequency_khz);
71
72/*
73 * Intel PXA2xx internal register mapping.
74 *
75 * Note: virtual 0xfffe0000-0xffffffff is reserved for the vector table
76 *       and cache flush area.
77 */
78static struct map_desc common_io_desc[] __initdata = {
79  	{	/* Devs */
80		.virtual	= (unsigned long)PERIPH_VIRT,
81		.pfn		= __phys_to_pfn(PERIPH_PHYS),
82		.length		= PERIPH_SIZE,
83		.type		= MT_DEVICE
84	}
85};
86
87void __init pxa_map_io(void)
88{
89	debug_ll_io_init();
90	iotable_init(ARRAY_AND_SIZE(common_io_desc));
91}