2019-06-04 11:11:33 +03:00
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// SPDX-License-Identifier: GPL-2.0-only
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2005-04-17 02:20:36 +04:00
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/*
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* linux/arch/arm/mach-pxa/generic.c
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*
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* Author: Nicolas Pitre
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* Created: Jun 15, 2001
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* Copyright: MontaVista Software Inc.
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*
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* Code common to all PXA machines.
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*
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* Since this file should be linked before any other machine specific file,
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* the __initcall() here will be executed first. This serves as default
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* initialization stuff for PXA machines which can be overridden later if
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* need be.
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*/
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2011-07-26 13:53:52 +04:00
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#include <linux/gpio.h>
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2005-04-17 02:20:36 +04:00
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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2008-08-05 19:14:15 +04:00
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#include <mach/hardware.h>
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2005-04-17 02:20:36 +04:00
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#include <asm/mach/map.h>
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2008-12-18 06:10:32 +03:00
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#include <asm/mach-types.h>
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2005-04-17 02:20:36 +04:00
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2014-07-14 20:52:04 +04:00
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#include <mach/irqs.h>
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2008-08-07 14:05:25 +04:00
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#include <mach/reset.h>
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2010-11-03 18:29:35 +03:00
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#include <mach/smemc.h>
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2010-11-24 06:54:19 +03:00
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#include <mach/pxa3xx-regs.h>
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2005-04-17 02:20:36 +04:00
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#include "generic.h"
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2014-07-14 20:52:04 +04:00
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#include <clocksource/pxa.h>
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2005-04-17 02:20:36 +04:00
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2008-07-29 10:26:00 +04:00
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void clear_reset_status(unsigned int mask)
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{
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if (cpu_is_pxa2xx())
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pxa2xx_clear_reset_status(mask);
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2010-11-24 06:54:19 +03:00
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else {
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/* RESET_STATUS_* has a 1:1 mapping with ARSR */
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ARSR = mask;
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}
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2008-07-29 10:26:00 +04:00
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}
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2014-07-14 20:52:04 +04:00
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/*
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* For non device-tree builds, keep legacy timer init
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*/
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2014-07-26 22:49:39 +04:00
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void __init pxa_timer_init(void)
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2014-07-14 20:52:04 +04:00
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{
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2014-12-27 16:55:25 +03:00
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if (cpu_is_pxa25x())
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pxa25x_clocks_init();
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if (cpu_is_pxa27x())
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pxa27x_clocks_init();
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2015-02-08 00:54:03 +03:00
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if (cpu_is_pxa3xx())
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pxa3xx_clocks_init();
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2016-09-19 22:12:13 +03:00
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pxa_timer_nodt_init(IRQ_OST0, io_p2v(0x40a00000));
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2014-07-14 20:52:04 +04:00
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}
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2007-08-20 13:07:44 +04:00
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/*
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* Get the clock frequency as reflected by CCCR and the turbo flag.
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* We assume these values have been applied via a fcs.
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* If info is not 0 we also display the current settings.
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*/
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unsigned int get_clk_frequency_khz(int info)
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{
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2008-09-11 06:27:30 +04:00
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if (cpu_is_pxa25x())
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2007-08-20 13:07:44 +04:00
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return pxa25x_get_clk_frequency_khz(info);
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2007-09-12 06:13:17 +04:00
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else if (cpu_is_pxa27x())
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2007-08-20 13:07:44 +04:00
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return pxa27x_get_clk_frequency_khz(info);
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2010-09-20 04:09:10 +04:00
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return 0;
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2007-08-20 13:07:44 +04:00
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}
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EXPORT_SYMBOL(get_clk_frequency_khz);
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2005-04-17 02:20:36 +04:00
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/*
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* Intel PXA2xx internal register mapping.
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*
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2010-10-11 04:20:19 +04:00
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* Note: virtual 0xfffe0000-0xffffffff is reserved for the vector table
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* and cache flush area.
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2005-04-17 02:20:36 +04:00
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*/
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2010-10-11 04:20:19 +04:00
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static struct map_desc common_io_desc[] __initdata = {
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2005-10-28 18:19:01 +04:00
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{ /* Devs */
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2014-07-11 15:00:36 +04:00
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.virtual = (unsigned long)PERIPH_VIRT,
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.pfn = __phys_to_pfn(PERIPH_PHYS),
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.length = PERIPH_SIZE,
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2005-10-28 18:19:01 +04:00
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.type = MT_DEVICE
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}
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2005-04-17 02:20:36 +04:00
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};
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void __init pxa_map_io(void)
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{
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2014-06-05 23:10:57 +04:00
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debug_ll_io_init();
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2010-10-11 04:20:19 +04:00
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iotable_init(ARRAY_AND_SIZE(common_io_desc));
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2005-04-17 02:20:36 +04:00
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}
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