board/eltec/elppc/pci.c

   1 /*
   2  * (C) Copyright 2002 ELTEC Elektronik AG
   3  * Frank Gottschling <fgottschling@eltec.de>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 /*
   9  * PCI initialisation for the MPC10x.
  10  */
  11
  12 #include <common.h>
  13 #include <pci.h>
  14 #include <mpc106.h>
  15
  16 #ifdef CONFIG_PCI
  17
  18 struct pci_controller local_hose;
  19
  20 void pci_init_board(void)
  21 {
  22     struct pci_controller* hose = (struct pci_controller *)&local_hose;
  23     u16 reg16;
  24
  25     hose->first_busno = 0;
  26     hose->last_busno = 0xff;
  27
  28     pci_set_region(hose->regions + 0,
  29         CONFIG_SYS_PCI_MEMORY_BUS,
  30         CONFIG_SYS_PCI_MEMORY_PHYS,
  31         CONFIG_SYS_PCI_MEMORY_SIZE,
  32         PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
  33
  34     /* PCI memory space */
  35     pci_set_region(hose->regions + 1,
  36         CONFIG_SYS_PCI_MEM_BUS,
  37         CONFIG_SYS_PCI_MEM_PHYS,
  38         CONFIG_SYS_PCI_MEM_SIZE,
  39         PCI_REGION_MEM);
  40
  41     /* ISA/PCI memory space */
  42     pci_set_region(hose->regions + 2,
  43         CONFIG_SYS_ISA_MEM_BUS,
  44         CONFIG_SYS_ISA_MEM_PHYS,
  45         CONFIG_SYS_ISA_MEM_SIZE,
  46         PCI_REGION_MEM);
  47
  48     /* PCI I/O space */
  49     pci_set_region(hose->regions + 3,
  50         CONFIG_SYS_PCI_IO_BUS,
  51         CONFIG_SYS_PCI_IO_PHYS,
  52         CONFIG_SYS_PCI_IO_SIZE,
  53         PCI_REGION_IO);
  54
  55     /* ISA/PCI I/O space */
  56     pci_set_region(hose->regions + 4,
  57         CONFIG_SYS_ISA_IO_BUS,
  58         CONFIG_SYS_ISA_IO_PHYS,
  59         CONFIG_SYS_ISA_IO_SIZE,
  60         PCI_REGION_IO);
  61
  62     hose->region_count = 5;
  63
  64     pci_setup_indirect(hose,
  65         MPC106_REG_ADDR,
  66         MPC106_REG_DATA);
  67
  68     pci_register_hose(hose);
  69
  70     hose->last_busno = pci_hose_scan(hose);
  71
  72     /* Initialises the MPC10x PCI Configuration regs. */
  73     pci_read_config_word (PCI_BDF(0,0,0), PCI_COMMAND, &reg16);
  74     reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
  75     pci_write_config_word(PCI_BDF(0,0,0), PCI_COMMAND, reg16);
  76
  77     /* Clear non-reserved bits in status register */
  78     pci_write_config_word(PCI_BDF(0,0,0), PCI_STATUS, 0xffff);
  79 }
  80
  81 #endif /* CONFIG_PCI */