2 * arch/arm/mach-imx/mm-imx21.c
4 * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
22 #include <linux/init.h>
23 #include <mach/hardware.h>
24 #include <mach/common.h>
25 #include <asm/pgtable.h>
26 #include <asm/mach/map.h>
28 /* MX21 memory map definition */
29 static struct map_desc imx21_io_desc[] __initdata = {
31 * this fixed mapping covers:
36 * - and some reserved space
39 .virtual = MX21_AIPI_BASE_ADDR_VIRT,
40 .pfn = __phys_to_pfn(MX21_AIPI_BASE_ADDR),
41 .length = MX21_AIPI_SIZE,
45 * this fixed mapping covers:
50 .virtual = MX21_SAHB1_BASE_ADDR_VIRT,
51 .pfn = __phys_to_pfn(MX21_SAHB1_BASE_ADDR),
52 .length = MX21_SAHB1_SIZE,
56 * this fixed mapping covers:
60 .virtual = MX21_X_MEMC_BASE_ADDR_VIRT,
61 .pfn = __phys_to_pfn(MX21_X_MEMC_BASE_ADDR),
62 .length = MX21_X_MEMC_SIZE,
68 * Initialize the memory map. It is called during the
69 * system startup to create static physical to virtual
70 * memory map for the IO modules.
72 void __init mx21_map_io(void)
74 mxc_set_cpu_type(MXC_CPU_MX21);
75 mxc_arch_reset_init(MX21_IO_ADDRESS(MX21_WDOG_BASE_ADDR));
77 iotable_init(imx21_io_desc, ARRAY_SIZE(imx21_io_desc));
80 int imx21_register_gpios(void);
82 void __init mx21_init_irq(void)
84 mxc_init_irq(MX21_IO_ADDRESS(MX21_AVIC_BASE_ADDR));
85 imx21_register_gpios();