arch/arm/mach-imx/mm-imx31.c

   1 /*
   2  *  Copyright (C) 1999,2000 Arm Limited
   3  *  Copyright (C) 2000 Deep Blue Solutions Ltd
   4  *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
   5  *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
   6  *    - add MX31 specific definitions
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  */
  18
  19 #include <linux/mm.h>
  20 #include <linux/init.h>
  21 #include <linux/err.h>
  22
  23 #include <asm/pgtable.h>
  24 #include <asm/mach/map.h>
  25
  26 #include <mach/common.h>
  27 #include <mach/devices-common.h>
  28 #include <mach/hardware.h>
  29 #include <mach/iomux-v3.h>
  30 #include <mach/irqs.h>
  31
  32 static struct map_desc mx31_io_desc[] __initdata = {
  33         imx_map_entry(MX31, X_MEMC, MT_DEVICE),
  34         imx_map_entry(MX31, AVIC, MT_DEVICE_NONSHARED),
  35         imx_map_entry(MX31, AIPS1, MT_DEVICE_NONSHARED),
  36         imx_map_entry(MX31, AIPS2, MT_DEVICE_NONSHARED),
  37         imx_map_entry(MX31, SPBA0, MT_DEVICE_NONSHARED),
  38 };
  39
  40 /*
  41  * This function initializes the memory map. It is called during the
  42  * system startup to create static physical to virtual memory mappings
  43  * for the IO modules.
  44  */
  45 void __init mx31_map_io(void)
  46 {
  47         iotable_init(mx31_io_desc, ARRAY_SIZE(mx31_io_desc));
  48 }
  49
  50 void __init imx31_init_early(void)
  51 {
  52         mxc_set_cpu_type(MXC_CPU_MX31);
  53         mxc_arch_reset_init(MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR));
  54 }
  55
  56 void __init mx31_init_irq(void)
  57 {
  58         mxc_init_irq(MX31_IO_ADDRESS(MX31_AVIC_BASE_ADDR));
  59 }
  60
  61 static struct sdma_script_start_addrs imx31_to1_sdma_script __initdata = {
  62         .per_2_per_addr = 1677,
  63 };
  64
  65 static struct sdma_script_start_addrs imx31_to2_sdma_script __initdata = {
  66         .ap_2_ap_addr = 423,
  67         .ap_2_bp_addr = 829,
  68         .bp_2_ap_addr = 1029,
  69 };
  70
  71 static struct sdma_platform_data imx31_sdma_pdata __initdata = {
  72         .sdma_version = 1,
  73         .fw_name = "sdma-imx31-to2.bin",
  74         .script_addrs = &imx31_to2_sdma_script,
  75 };
  76
  77 void __init imx31_soc_init(void)
  78 {
  79         int to_version = mx31_revision() >> 4;
  80
  81         mxc_register_gpio("imx31-gpio", 0, MX31_GPIO1_BASE_ADDR, SZ_16K, MX31_INT_GPIO1, 0);
  82         mxc_register_gpio("imx31-gpio", 1, MX31_GPIO2_BASE_ADDR, SZ_16K, MX31_INT_GPIO2, 0);
  83         mxc_register_gpio("imx31-gpio", 2, MX31_GPIO3_BASE_ADDR, SZ_16K, MX31_INT_GPIO3, 0);
  84
  85         if (to_version == 1) {
  86                 strncpy(imx31_sdma_pdata.fw_name, "sdma-imx31-to1.bin",
  87                         strlen(imx31_sdma_pdata.fw_name));
  88                 imx31_sdma_pdata.script_addrs = &imx31_to1_sdma_script;
  89         }
  90
  91         imx_add_imx_sdma(MX31_SDMA_BASE_ADDR, MX31_INT_SDMA, &imx31_sdma_pdata);
  92 }