1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2006 Freescale Semiconductor.
9 /* Config the VIA chip */
10 void mpc85xx_config_via(struct pci_controller *hose,
11 pci_dev_t dev, struct pci_config_table *tab)
16 /* Enable USB and IDE functions */
17 pci_hose_write_config_byte(hose, dev, 0x48, 0x08);
19 pci_hose_read_config_dword(hose, dev, PCI_COMMAND, &cmdstat);
20 cmdstat |= PCI_COMMAND_IO | PCI_COMMAND_MEMORY| PCI_COMMAND_MASTER;
21 pci_hose_write_config_dword(hose, dev, PCI_COMMAND, cmdstat);
22 pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE, 0x08);
23 pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80);
26 * Force the backplane P2P bridge to have a window
27 * open from 0x00000000-0x00001fff in PCI I/O space.
28 * This allows legacy I/O (i8259, etc) on the VIA
29 * southbridge to be accessed.
31 bridge = PCI_BDF(0,BRIDGE_ID,0);
32 pci_hose_write_config_byte(hose, bridge, PCI_IO_BASE, 0);
33 pci_hose_write_config_word(hose, bridge, PCI_IO_BASE_UPPER16, 0);
34 pci_hose_write_config_byte(hose, bridge, PCI_IO_LIMIT, 0x10);
35 pci_hose_write_config_word(hose, bridge, PCI_IO_LIMIT_UPPER16, 0);
39 void mpc85xx_config_via_usbide(struct pci_controller *hose,
40 pci_dev_t dev, struct pci_config_table *tab)
42 pciauto_config_device(hose, dev);
44 * Since the P2P window was forced to cover the fixed
45 * legacy I/O addresses, it is necessary to manually
46 * place the base addresses for the IDE and USB functions
49 pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_0, 0x1ff8);
50 pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_1, 0x1ff4);
51 pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_2, 0x1fe8);
52 pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_3, 0x1fe4);
53 pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_4, 0x1fd0);
56 /* Function 2, USB ports 0-1 */
57 void mpc85xx_config_via_usb(struct pci_controller *hose,
58 pci_dev_t dev, struct pci_config_table *tab)
60 pciauto_config_device(hose, dev);
62 pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_4, 0x1fa0);
65 /* Function 3, USB ports 2-3 */
66 void mpc85xx_config_via_usb2(struct pci_controller *hose,
67 pci_dev_t dev, struct pci_config_table *tab)
69 pciauto_config_device(hose, dev);
71 pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_4, 0x1f80);
74 /* Function 5, Power Management */
75 void mpc85xx_config_via_power(struct pci_controller *hose,
76 pci_dev_t dev, struct pci_config_table *tab)
78 pciauto_config_device(hose, dev);
80 pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_0, 0x1e00);
81 pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_1, 0x1dfc);
82 pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_2, 0x1df8);
85 /* Function 6, AC97 Interface */
86 void mpc85xx_config_via_ac97(struct pci_controller *hose,
87 pci_dev_t dev, struct pci_config_table *tab)
89 pciauto_config_device(hose, dev);
91 pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_0, 0x1c00);