board/ppmc7xx/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
  34 struct pci_controller local_hose;
  35
  36 void 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         CFG_PCI_MEMORY_BUS,
  46         CFG_PCI_MEMORY_PHYS,
  47         CFG_PCI_MEMORY_SIZE,
  48         PCI_REGION_MEM | PCI_REGION_MEMORY);
  49
  50     /* PCI memory space */
  51     pci_set_region(hose->regions + 1,
  52         CFG_PCI_MEM_BUS,
  53         CFG_PCI_MEM_PHYS,
  54         CFG_PCI_MEM_SIZE,
  55         PCI_REGION_MEM);
  56
  57     /* ISA/PCI memory space */
  58     pci_set_region(hose->regions + 2,
  59         CFG_ISA_MEM_BUS,
  60         CFG_ISA_MEM_PHYS,
  61         CFG_ISA_MEM_SIZE,
  62         PCI_REGION_MEM);
  63
  64     /* PCI I/O space */
  65     pci_set_region(hose->regions + 3,
  66         CFG_PCI_IO_BUS,
  67         CFG_PCI_IO_PHYS,
  68         CFG_PCI_IO_SIZE,
  69         PCI_REGION_IO);
  70
  71     /* ISA/PCI I/O space */
  72     pci_set_region(hose->regions + 4,
  73         CFG_ISA_IO_BUS,
  74         CFG_ISA_IO_PHYS,
  75         CFG_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 */