board/freescale/common/cds_via.c

   1 /*
   2  * Copyright 2006 Freescale Semiconductor.
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <pci.h>
   9
  10 /* Config the VIA chip */
  11 void mpc85xx_config_via(struct pci_controller *hose,
  12                         pci_dev_t dev, struct pci_config_table *tab)
  13 {
  14         pci_dev_t bridge;
  15         unsigned int cmdstat;
  16
  17         /* Enable USB and IDE functions */
  18         pci_hose_write_config_byte(hose, dev, 0x48, 0x08);
  19
  20         pci_hose_read_config_dword(hose, dev, PCI_COMMAND, &cmdstat);
  21         cmdstat |= PCI_COMMAND_IO | PCI_COMMAND_MEMORY| PCI_COMMAND_MASTER;
  22         pci_hose_write_config_dword(hose, dev, PCI_COMMAND, cmdstat);
  23         pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE, 0x08);
  24         pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80);
  25
  26         /*
  27          * Force the backplane P2P bridge to have a window
  28          * open from 0x00000000-0x00001fff in PCI I/O space.
  29          * This allows legacy I/O (i8259, etc) on the VIA
  30          * southbridge to be accessed.
  31          */
  32         bridge = PCI_BDF(0,BRIDGE_ID,0);
  33         pci_hose_write_config_byte(hose, bridge, PCI_IO_BASE, 0);
  34         pci_hose_write_config_word(hose, bridge, PCI_IO_BASE_UPPER16, 0);
  35         pci_hose_write_config_byte(hose, bridge, PCI_IO_LIMIT, 0x10);
  36         pci_hose_write_config_word(hose, bridge, PCI_IO_LIMIT_UPPER16, 0);
  37 }
  38
  39 /* Function 1, IDE */
  40 void mpc85xx_config_via_usbide(struct pci_controller *hose,
  41                                pci_dev_t dev, struct pci_config_table *tab)
  42 {
  43         pciauto_config_device(hose, dev);
  44         /*
  45          * Since the P2P window was forced to cover the fixed
  46          * legacy I/O addresses, it is necessary to manually
  47          * place the base addresses for the IDE and USB functions
  48          * within this window.
  49          */
  50         pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_0, 0x1ff8);
  51         pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_1, 0x1ff4);
  52         pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_2, 0x1fe8);
  53         pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_3, 0x1fe4);
  54         pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_4, 0x1fd0);
  55 }
  56
  57 /* Function 2, USB ports 0-1 */
  58 void mpc85xx_config_via_usb(struct pci_controller *hose,
  59                             pci_dev_t dev, struct pci_config_table *tab)
  60 {
  61         pciauto_config_device(hose, dev);
  62
  63         pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_4, 0x1fa0);
  64 }
  65
  66 /* Function 3, USB ports 2-3 */
  67 void mpc85xx_config_via_usb2(struct pci_controller *hose,
  68                              pci_dev_t dev, struct pci_config_table *tab)
  69 {
  70         pciauto_config_device(hose, dev);
  71
  72         pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_4, 0x1f80);
  73 }
  74
  75 /* Function 5, Power Management */
  76 void mpc85xx_config_via_power(struct pci_controller *hose,
  77                               pci_dev_t dev, struct pci_config_table *tab)
  78 {
  79         pciauto_config_device(hose, dev);
  80
  81         pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_0, 0x1e00);
  82         pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_1, 0x1dfc);
  83         pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_2, 0x1df8);
  84 }
  85
  86 /* Function 6, AC97 Interface */
  87 void mpc85xx_config_via_ac97(struct pci_controller *hose,
  88                              pci_dev_t dev, struct pci_config_table *tab)
  89 {
  90         pciauto_config_device(hose, dev);
  91
  92         pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_0, 0x1c00);
  93 }