ad68bb9f7a
This is important because on PXA3xx, the physical mapping of SMEMC registers differs from the one on PXA2xx. In order to get PCMCIA working on both PXA2xx and PXA320, the PCMCIA driver was adjusted accordingly as well. Also, various places in the kernel had to be patched to use __raw_read/__raw_write. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
110 lines
2.6 KiB
C
110 lines
2.6 KiB
C
/*
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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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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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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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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <mach/hardware.h>
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#include <asm/system.h>
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#include <asm/pgtable.h>
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#include <asm/mach/map.h>
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#include <asm/mach-types.h>
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#include <mach/reset.h>
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#include <mach/gpio.h>
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#include <mach/smemc.h>
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#include "generic.h"
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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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if (cpu_is_pxa3xx())
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pxa3xx_clear_reset_status(mask);
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}
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unsigned long get_clock_tick_rate(void)
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{
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unsigned long clock_tick_rate;
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if (cpu_is_pxa25x())
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clock_tick_rate = 3686400;
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else if (machine_is_mainstone())
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clock_tick_rate = 3249600;
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else
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clock_tick_rate = 3250000;
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return clock_tick_rate;
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}
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EXPORT_SYMBOL(get_clock_tick_rate);
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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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if (cpu_is_pxa25x())
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return pxa25x_get_clk_frequency_khz(info);
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else if (cpu_is_pxa27x())
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return pxa27x_get_clk_frequency_khz(info);
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return 0;
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}
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EXPORT_SYMBOL(get_clk_frequency_khz);
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/*
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* Return the current memory clock frequency in units of 10kHz
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*/
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unsigned int get_memclk_frequency_10khz(void)
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{
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if (cpu_is_pxa25x())
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return pxa25x_get_memclk_frequency_10khz();
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else if (cpu_is_pxa27x())
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return pxa27x_get_memclk_frequency_10khz();
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return 0;
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}
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EXPORT_SYMBOL(get_memclk_frequency_10khz);
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/*
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* Intel PXA2xx internal register mapping.
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*
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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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*/
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static struct map_desc common_io_desc[] __initdata = {
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{ /* Devs */
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.virtual = 0xf2000000,
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.pfn = __phys_to_pfn(0x40000000),
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.length = 0x02000000,
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.type = MT_DEVICE
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}, { /* UNCACHED_PHYS_0 */
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.virtual = 0xff000000,
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.pfn = __phys_to_pfn(0x00000000),
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.length = 0x00100000,
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.type = MT_DEVICE
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}
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};
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void __init pxa_map_io(void)
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{
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iotable_init(ARRAY_AND_SIZE(common_io_desc));
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}
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