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cd4a05f9df
This allows us to have more mapping functions for more than one i.MX architecture in the kernel. As this is the earliest board specific hook we have, also use it to set the cpu type. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
86 lines
2.0 KiB
C
86 lines
2.0 KiB
C
/*
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* generic.c
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*
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* Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include <linux/mm.h>
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#include <linux/init.h>
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#include <mach/hardware.h>
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#include <mach/common.h>
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#include <asm/pgtable.h>
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#include <asm/mach/map.h>
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/* MX27 memory map definition */
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static struct map_desc mxc_io_desc[] __initdata = {
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/*
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* this fixed mapping covers:
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* - AIPI1
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* - AIPI2
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* - AITC
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* - ROM Patch
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* - and some reserved space
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*/
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{
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.virtual = AIPI_BASE_ADDR_VIRT,
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.pfn = __phys_to_pfn(AIPI_BASE_ADDR),
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.length = AIPI_SIZE,
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.type = MT_DEVICE
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},
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/*
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* this fixed mapping covers:
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* - CSI
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* - ATA
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*/
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{
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.virtual = SAHB1_BASE_ADDR_VIRT,
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.pfn = __phys_to_pfn(SAHB1_BASE_ADDR),
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.length = SAHB1_SIZE,
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.type = MT_DEVICE
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},
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/*
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* this fixed mapping covers:
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* - EMI
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*/
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{
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.virtual = X_MEMC_BASE_ADDR_VIRT,
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.pfn = __phys_to_pfn(X_MEMC_BASE_ADDR),
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.length = X_MEMC_SIZE,
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.type = MT_DEVICE
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}
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};
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/*
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* Initialize the memory map. It is called during the
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* system startup to create static physical to virtual
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* memory map for the IO modules.
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*/
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void __init mx21_map_io(void)
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{
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mxc_set_cpu_type(MXC_CPU_MX21);
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iotable_init(mxc_io_desc, ARRAY_SIZE(mxc_io_desc));
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}
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void __init mx27_map_io(void)
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{
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mxc_set_cpu_type(MXC_CPU_MX27);
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iotable_init(mxc_io_desc, ARRAY_SIZE(mxc_io_desc));
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}
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