arch/arm/mach-orion/common.c

   1 /*
   2  * arch/arm/mach-orion/common.c
   3  *
   4  * Core functions for Marvell Orion System On Chip
   5  *
   6  * Maintainer: Tzachi Perelstein <tzachi@marvell.com>
   7  *
   8  * This file is licensed under  the terms of the GNU General Public
   9  * License version 2. This program is licensed "as is" without any
  10  * warranty of any kind, whether express or implied.
  11  */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <asm/page.h>
  16 #include <asm/timex.h>
  17 #include <asm/mach/map.h>
  18 #include <asm/arch/orion.h>
  19 #include "common.h"
  20
  21 /*****************************************************************************
  22  * I/O Address Mapping
  23  ****************************************************************************/
  24 static struct map_desc orion_io_desc[] __initdata = {
  25         {
  26                 .virtual        = ORION_REGS_BASE,
  27                 .pfn            = __phys_to_pfn(ORION_REGS_BASE),
  28                 .length         = ORION_REGS_SIZE,
  29                 .type           = MT_DEVICE
  30         },
  31         {
  32                 .virtual        = ORION_PCIE_IO_BASE,
  33                 .pfn            = __phys_to_pfn(ORION_PCIE_IO_BASE),
  34                 .length         = ORION_PCIE_IO_SIZE,
  35                 .type           = MT_DEVICE
  36         },
  37         {
  38                 .virtual        = ORION_PCI_IO_BASE,
  39                 .pfn            = __phys_to_pfn(ORION_PCI_IO_BASE),
  40                 .length         = ORION_PCI_IO_SIZE,
  41                 .type           = MT_DEVICE
  42         },
  43         {
  44                 .virtual        = ORION_PCIE_WA_BASE,
  45                 .pfn            = __phys_to_pfn(ORION_PCIE_WA_BASE),
  46                 .length         = ORION_PCIE_WA_SIZE,
  47                 .type           = MT_DEVICE
  48         },
  49 };
  50
  51 void __init orion_map_io(void)
  52 {
  53         iotable_init(orion_io_desc, ARRAY_SIZE(orion_io_desc));
  54 }
  55
  56 /*****************************************************************************
  57  * General
  58  ****************************************************************************/
  59
  60 /*
  61  * Identify device ID and rev from PCIE configuration header space '0'.
  62  */
  63 static void orion_id(u32 *dev, u32 *rev, char **dev_name)
  64 {
  65         orion_pcie_id(dev, rev);
  66
  67         if (*dev == MV88F5281_DEV_ID) {
  68                 if (*rev == MV88F5281_REV_D2) {
  69                         *dev_name = "MV88F5281-D2";
  70                 } else if (*rev == MV88F5281_REV_D1) {
  71                         *dev_name = "MV88F5281-D1";
  72                 } else {
  73                         *dev_name = "MV88F5281-Rev-Unsupported";
  74                 }
  75         } else if (*dev == MV88F5182_DEV_ID) {
  76                 if (*rev == MV88F5182_REV_A2) {
  77                         *dev_name = "MV88F5182-A2";
  78                 } else {
  79                         *dev_name = "MV88F5182-Rev-Unsupported";
  80                 }
  81         } else {
  82                 *dev_name = "Device-Unknown";
  83         }
  84 }
  85
  86 void __init orion_init(void)
  87 {
  88         char *dev_name;
  89         u32 dev, rev;
  90
  91         orion_id(&dev, &rev, &dev_name);
  92         printk(KERN_INFO "Orion ID: %s. TCLK=%d.\n", dev_name, ORION_TCLK);
  93
  94         /*
  95          * Setup Orion address map
  96          */
  97         orion_setup_cpu_wins();
  98         orion_setup_usb_wins();
  99         orion_setup_eth_wins();
 100         orion_setup_pci_wins();
 101         orion_setup_pcie_wins();
 102         if (dev == MV88F5182_DEV_ID)
 103                 orion_setup_sata_wins();
 104 }