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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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08ff97b521
This makes less code rely on the virtual constants. To further simplify code and reduce the needed boilerplate when defining the static mappings a new helper macro is defined in mach/hardware.h. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
/*
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* arch/arm/mach-imx/mm-imx21.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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/* MX21 memory map definition */
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static struct map_desc imx21_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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imx_map_entry(MX21, AIPI, MT_DEVICE),
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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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imx_map_entry(MX21, SAHB1, MT_DEVICE),
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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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imx_map_entry(MX21, X_MEMC, MT_DEVICE),
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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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mxc_arch_reset_init(MX21_IO_ADDRESS(MX21_WDOG_BASE_ADDR));
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iotable_init(imx21_io_desc, ARRAY_SIZE(imx21_io_desc));
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}
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int imx21_register_gpios(void);
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void __init mx21_init_irq(void)
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{
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mxc_init_irq(MX21_IO_ADDRESS(MX21_AVIC_BASE_ADDR));
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imx21_register_gpios();
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}
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