LXR uboot/board/freescale/common/cds_pci

   1/*
   2 * Copyright 2004 Freescale Semiconductor.
   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 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU General Public License
  18 * along with this program; if not, write to the Free Software
  19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  20 * MA 02111-1307 USA
  21 */
  22
  23#include <common.h>
  24#include <libfdt.h>
  25#include <fdt_support.h>
  26#include "cadmus.h"
  27
  28#if defined(CONFIG_OF_BOARD_SETUP)
  29static void cds_pci_fixup(void *blob)
  30{
  31        int node, tmp[2];
  32        const char *path;
  33        int len, slot, i;
  34        u32 *map = NULL;
  35
  36        node = fdt_path_offset(blob, "/aliases");
  37        tmp[0] = 0;
  38        if (node >= 0) {
  39                path = fdt_getprop(blob, node, "pci0", NULL);
  40                if (path) {
  41                        node = fdt_path_offset(blob, path);
  42                        if (node >= 0) {
  43                                map = fdt_getprop_w(blob, node, "interrupt-map", &len);
  44                        }
  45                }
  46        }
  47
  48        if (map) {
  49                len /= sizeof(u32);
  50
  51                slot = get_pci_slot();
  52
  53                for (i=0;i<len;i+=7) {
  54                        /* We rotate the interrupt pins so that the mapping
  55                         * changes depending on the slot the carrier card is in.
  56                         */
  57                        map[3] = ((map[3] + slot - 2) % 4) + 1;
  58                        map+=7;
  59                }
  60        }
  61}
  62
  63void
  64ft_board_setup(void *blob, bd_t *bd)
  65{
  66        ft_cpu_setup(blob, bd);
  67#ifdef CONFIG_PCI
  68        ft_pci_setup(blob, bd);
  69        cds_pci_fixup(blob);
  70#endif
  71}
  72#endif
  73