| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <device/mmio.h> |
| #include <device/pci_ops.h> |
| #include <device/pci_def.h> |
| #include <northbridge/intel/sandybridge/sandybridge.h> |
| #include <southbridge/intel/common/rcba.h> |
| #include <southbridge/intel/common/pmbase.h> |
| |
| #include "pch.h" |
| |
| #define TOTAL_USB_PORTS 14 |
| |
| void early_usb_init(const struct southbridge_usb_port *portmap) |
| { |
| u32 reg32; |
| const u16 currents[] = { 0xf57, 0xf5f, 0x753, 0x75f, 0x14b, 0x74b, |
| 0x557, 0x757, 0x55f, 0x54b |
| }; |
| int i; |
| |
| /* Unlock registers. */ |
| write_pmbase16(UPRWC, read_pmbase16(UPRWC) | UPRWC_WR_EN); |
| |
| for (i = 0; i < TOTAL_USB_PORTS; i++) |
| RCBA32_AND_OR(USBIR0 + 4 * i, ~0xfff, currents[portmap[i].current]); |
| |
| /* USB Initialization Registers. We follow what EDS recommends here. |
| TODO maybe vendor firmware values are better? */ |
| RCBA32(USBIRC) &= ~(1 << 8); |
| RCBA32_OR(USBIRA, (7 << 12) | (7 << 8) | (7 << 4) | (2 << 0)); |
| RCBA32_AND_OR(USBIRB, ~0x617f0, (3 << 17) | (1 << 12) | (1 << 10) |
| | (1 << 8) | (4 << 4)); |
| /* Set to Rate Matching Hub Mode to make PCI devices appear. */ |
| RCBA32(0x3598) = 0; |
| |
| reg32 = 0; |
| for (i = 0; i < TOTAL_USB_PORTS; i++) { |
| if (!portmap[i].enabled) |
| reg32 |= (1 << i); |
| } |
| RCBA32(USBPDO) = reg32; |
| reg32 = 0; |
| /* The OC pins of the first 8 USB ports are mapped in USBOCM1 */ |
| for (i = 0; i < 8; i++) { |
| if (portmap[i].enabled && portmap[i].oc_pin >= 0) |
| reg32 |= (1 << (i + 8 * portmap[i].oc_pin)); |
| } |
| RCBA32(USBOCM1) = reg32; |
| reg32 = 0; |
| /* The OC pins of the remainder 6 USB ports are mapped in USBOCM2 */ |
| for (i = 8; i < TOTAL_USB_PORTS; i++) { |
| if (portmap[i].enabled && portmap[i].oc_pin >= 4) |
| reg32 |= (1 << (i - 8 + 8 * (portmap[i].oc_pin - 4))); |
| } |
| RCBA32(USBOCM2) = reg32; |
| |
| /* Relock registers. */ |
| write_pmbase16(UPRWC, 0); |
| } |