src/southbridge/intel/bd82x6x/early_usb.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <device/mmio.h>
   4 #include <device/pci_ops.h>
   5 #include <device/pci_def.h>
   6 #include <southbridge/intel/common/rcba.h>
   7 #include <southbridge/intel/common/pmbase.h>
   8
   9 #include "pch.h"
  10
  11 void early_usb_init(const struct southbridge_usb_port *portmap)
  12 {
  13         u32 reg32;
  14         const u32 rcba_dump[8] = {
  15                 /* 3560 */ 0x024c8001, 0x000024a3, 0x00040002, 0x01000050,
  16                 /* 3570 */ 0x02000772, 0x16000f9f, 0x1800ff4f, 0x0001d630,
  17         };
  18         const u32 currents[] = { 0x20000153, 0x20000f57, 0x2000055b, 0x20000f51,
  19                                  0x2000094a, 0x2000035f, 0x20000f53, 0x20000357,
  20                                  0x20000353 };
  21         int i;
  22
  23         /* Unlock registers.  */
  24         write_pmbase16(UPRWC, read_pmbase16(UPRWC) | UPRWC_WR_EN);
  25
  26         for (i = 0; i < 14; i++)
  27                 RCBA32(USBIR0 + 4 * i) = currents[portmap[i].current];
  28         for (i = 0; i < 10; i++)
  29                 RCBA32(0x3538 + 4 * i) = 0;
  30
  31         for (i = 0; i < 8; i++)
  32                 RCBA32(0x3560 + 4 * i) = rcba_dump[i];
  33         for (i = 0; i < 8; i++)
  34                 RCBA32(0x3580 + 4 * i) = 0;
  35         reg32 = 0;
  36         for (i = 0; i < 14; i++)
  37                 if (!portmap[i].enabled)
  38                         reg32 |= (1 << i);
  39         RCBA32(USBPDO) = reg32;
  40         reg32 = 0;
  41         for (i = 0; i < 8; i++)
  42                 if (portmap[i].enabled && portmap[i].oc_pin >= 0)
  43                         reg32 |= (1 << (i + 8 * portmap[i].oc_pin));
  44         RCBA32(USBOCM1) = reg32;
  45         reg32 = 0;
  46         for (i = 8; i < 14; i++)
  47                 if (portmap[i].enabled && portmap[i].oc_pin >= 4)
  48                         reg32 |= (1 << (i - 8 + 8 * (portmap[i].oc_pin - 4)));
  49         RCBA32(USBOCM2) = reg32;
  50         for (i = 0; i < 22; i++)
  51                 RCBA32(0x35a8 + 4 * i) = 0;
  52
  53         pci_write_config32(PCH_XHCI_DEV, 0xe4, 0x00000000);
  54
  55         /* Relock registers.  */
  56         write_pmbase16(UPRWC, 0);
  57 }