board/freescale/mpc837xerdb/pci.c

   1 /*
   2  * Copyright (C) 2007 Freescale Semiconductor, Inc.
   3  *
   4  * See file CREDITS for list of people who contributed to this
   5  * project.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 of
  10  * the License, or (at your option) any later version.
  11  */
  12
  13 #include <common.h>
  14 #include <mpc83xx.h>
  15 #include <pci.h>
  16
  17 #if defined(CONFIG_PCI)
  18 static struct pci_region pci_regions[] = {
  19         {
  20                 bus_start: CONFIG_SYS_PCI_MEM_BASE,
  21                 phys_start: CONFIG_SYS_PCI_MEM_PHYS,
  22                 size: CONFIG_SYS_PCI_MEM_SIZE,
  23                 flags: PCI_REGION_MEM | PCI_REGION_PREFETCH
  24         },
  25         {
  26                 bus_start: CONFIG_SYS_PCI_MMIO_BASE,
  27                 phys_start: CONFIG_SYS_PCI_MMIO_PHYS,
  28                 size: CONFIG_SYS_PCI_MMIO_SIZE,
  29                 flags: PCI_REGION_MEM
  30         },
  31         {
  32                 bus_start: CONFIG_SYS_PCI_IO_BASE,
  33                 phys_start: CONFIG_SYS_PCI_IO_PHYS,
  34                 size: CONFIG_SYS_PCI_IO_SIZE,
  35                 flags: PCI_REGION_IO
  36         }
  37 };
  38
  39 void pci_init_board(void)
  40 {
  41         volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR;
  42         volatile clk83xx_t *clk = (volatile clk83xx_t *)&immr->clk;
  43         volatile law83xx_t *pci_law = immr->sysconf.pcilaw;
  44         struct pci_region *reg[] = { pci_regions };
  45
  46         /* Enable all 5 PCI_CLK_OUTPUTS */
  47         clk->occr |= 0xf8000000;
  48         udelay(2000);
  49
  50         /* Configure PCI Local Access Windows */
  51         pci_law[0].bar = CONFIG_SYS_PCI_MEM_PHYS & LAWBAR_BAR;
  52         pci_law[0].ar = LBLAWAR_EN | LBLAWAR_512MB;
  53
  54         pci_law[1].bar = CONFIG_SYS_PCI_IO_PHYS & LAWBAR_BAR;
  55         pci_law[1].ar = LBLAWAR_EN | LBLAWAR_1MB;
  56
  57         mpc83xx_pci_init(1, reg, 0);
  58 }
  59 #endif  /* CONFIG_PCI */