1/* 2 * arch/arm/mach-imx/mm-imx21.c 3 * 4 * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de) 5 * 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. 14 * 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, 18 * MA 02110-1301, USA. 19 */ 20 21#include <linux/mm.h> 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> 27 28/* MX21 memory map definition */ 29static struct map_desc imx21_io_desc[] __initdata = { 30 /* 31 * this fixed mapping covers: 32 * - AIPI1 33 * - AIPI2 34 * - AITC 35 * - ROM Patch 36 * - and some reserved space 37 */ 38 { 39 .virtual = MX21_AIPI_BASE_ADDR_VIRT, 40 .pfn = __phys_to_pfn(MX21_AIPI_BASE_ADDR), 41 .length = MX21_AIPI_SIZE, 42 .type = MT_DEVICE 43 }, 44 /* 45 * this fixed mapping covers: 46 * - CSI 47 * - ATA 48 */ 49 { 50 .virtual = MX21_SAHB1_BASE_ADDR_VIRT, 51 .pfn = __phys_to_pfn(MX21_SAHB1_BASE_ADDR), 52 .length = MX21_SAHB1_SIZE, 53 .type = MT_DEVICE 54 }, 55 /* 56 * this fixed mapping covers: 57 * - EMI 58 */ 59 { 60 .virtual = MX21_X_MEMC_BASE_ADDR_VIRT, 61 .pfn = __phys_to_pfn(MX21_X_MEMC_BASE_ADDR), 62 .length = MX21_X_MEMC_SIZE, 63 .type = MT_DEVICE 64 }, 65}; 66 67/* 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. 71 */ 72void __init mx21_map_io(void) 73{ 74 mxc_set_cpu_type(MXC_CPU_MX21); 75 mxc_arch_reset_init(MX21_IO_ADDRESS(MX21_WDOG_BASE_ADDR)); 76 77 iotable_init(imx21_io_desc, ARRAY_SIZE(imx21_io_desc)); 78} 79 80int imx21_register_gpios(void); 81 82void __init mx21_init_irq(void) 83{ 84 mxc_init_irq(MX21_IO_ADDRESS(MX21_AVIC_BASE_ADDR)); 85 imx21_register_gpios(); 86} 87