LXR uboot/board/eltec/elppc/pci.c

   1/*
   2 * (C) Copyright 2002 ELTEC Elektronik AG
   3 * Frank Gottschling <fgottschling@eltec.de>
   4 *
   5 * See file CREDITS for list of people who contributed to this
   6 * project.
   7 *
   8 * This program is free software; you can redistribute it and/or
   9 * modify it under the terms of the GNU General Public License as
  10 * published by the Free Software Foundation; either version 2 of
  11 * the License, or (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 * You should have received a copy of the GNU General Public License
  19 * along with this program; if not, write to the Free Software
  20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21 * MA 02111-1307 USA
  22 */
  23
  24/*
  25 * PCI initialisation for the MPC10x.
  26 */
  27
  28#include <common.h>
  29#include <pci.h>
  30#include <mpc106.h>
  31
  32#ifdef CONFIG_PCI
  33
  34struct pci_controller local_hose;
  35
  36void pci_init_board(void)
  37{
  38    struct pci_controller* hose = (struct pci_controller *)&local_hose;
  39    u16 reg16;
  40
  41    hose->first_busno = 0;
  42    hose->last_busno = 0xff;
  43
  44    pci_set_region(hose->regions + 0,
  45        CONFIG_SYS_PCI_MEMORY_BUS,
  46        CONFIG_SYS_PCI_MEMORY_PHYS,
  47        CONFIG_SYS_PCI_MEMORY_SIZE,
  48        PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
  49
  50    /* PCI memory space */
  51    pci_set_region(hose->regions + 1,
  52        CONFIG_SYS_PCI_MEM_BUS,
  53        CONFIG_SYS_PCI_MEM_PHYS,
  54        CONFIG_SYS_PCI_MEM_SIZE,
  55        PCI_REGION_MEM);
  56
  57    /* ISA/PCI memory space */
  58    pci_set_region(hose->regions + 2,
  59        CONFIG_SYS_ISA_MEM_BUS,
  60        CONFIG_SYS_ISA_MEM_PHYS,
  61        CONFIG_SYS_ISA_MEM_SIZE,
  62        PCI_REGION_MEM);
  63
  64    /* PCI I/O space */
  65    pci_set_region(hose->regions + 3,
  66        CONFIG_SYS_PCI_IO_BUS,
  67        CONFIG_SYS_PCI_IO_PHYS,
  68        CONFIG_SYS_PCI_IO_SIZE,
  69        PCI_REGION_IO);
  70
  71    /* ISA/PCI I/O space */
  72    pci_set_region(hose->regions + 4,
  73        CONFIG_SYS_ISA_IO_BUS,
  74        CONFIG_SYS_ISA_IO_PHYS,
  75        CONFIG_SYS_ISA_IO_SIZE,
  76        PCI_REGION_IO);
  77
  78    hose->region_count = 5;
  79
  80    pci_setup_indirect(hose,
  81        MPC106_REG_ADDR,
  82        MPC106_REG_DATA);
  83
  84    pci_register_hose(hose);
  85
  86    hose->last_busno = pci_hose_scan(hose);
  87
  88    /* Initialises the MPC10x PCI Configuration regs. */
  89    pci_read_config_word (PCI_BDF(0,0,0), PCI_COMMAND, &reg16);
  90    reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
  91    pci_write_config_word(PCI_BDF(0,0,0), PCI_COMMAND, reg16);
  92
  93    /* Clear non-reserved bits in status register */
  94    pci_write_config_word(PCI_BDF(0,0,0), PCI_STATUS, 0xffff);
  95}
  96
  97#endif /* CONFIG_PCI */
  98