src/mainboard/lenovo/t420/early_init.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <device/pci_ops.h>
   4 #include <northbridge/intel/sandybridge/raminit_native.h>
   5 #include <southbridge/intel/bd82x6x/pch.h>
   6 #include <drivers/lenovo/hybrid_graphics/hybrid_graphics.h>
   7 #include <northbridge/intel/sandybridge/sandybridge.h>
   8 #include <device/device.h>
   9
  10 static void hybrid_graphics_init(void)
  11 {
  12         bool peg, igd;
  13         u32 reg32;
  14
  15         early_hybrid_graphics(&igd, &peg);
  16
  17         if (peg && igd)
  18                 return;
  19
  20         /* Hide disabled devices */
  21         reg32 = pci_read_config32(PCI_DEV(0, 0, 0), DEVEN);
  22         reg32 &= ~(DEVEN_PEG10 | DEVEN_IGD);
  23
  24         if (peg)
  25                 reg32 |= DEVEN_PEG10;
  26
  27         if (igd)
  28                 reg32 |= DEVEN_IGD;
  29         else
  30                 /* Disable IGD VGA decode, no GTT or GFX stolen */
  31                 pci_write_config16(PCI_DEV(0, 0, 0), GGC, 2);
  32
  33         pci_write_config32(PCI_DEV(0, 0, 0), DEVEN, reg32);
  34 }
  35
  36 // OC3 set in BIOS to port 2-7, OC7 set in BIOS to port 10-13
  37 const struct southbridge_usb_port mainboard_usb_ports[] = {
  38         { 1, 1,  0 }, /* P0: system port 4, OC0 */
  39         { 1, 1,  1 }, /* P1: system port 2 (EHCI debug), OC 1 */
  40         { 1, 1, -1 }, /* P2: HALF MINICARD (WLAN) no oc */
  41         { 1, 0, -1 }, /* P3: WWAN, no OC */
  42         { 1, 0, -1 }, /* P4: smartcard, no OC */
  43         { 1, 1, -1 }, /* P5: ExpressCard, no OC */
  44         { 0, 0, -1 }, /* P6: empty */
  45         { 0, 0, -1 }, /* P7: empty */
  46         { 1, 1,  4 }, /* P8: system port 3, OC4*/
  47         { 1, 1,  5 }, /* P9: system port 1 (EHCI debug), OC 5 */
  48         { 1, 0, -1 }, /* P10: fingerprint reader, no OC */
  49         { 1, 0, -1 }, /* P11: bluetooth, no OC. */
  50         { 1, 1, -1 }, /* P12: docking, no OC */
  51         { 1, 1, -1 }, /* P13: camera (LCD), no OC */
  52 };
  53
  54 void mainboard_get_spd(spd_raw_data *spd, bool id_only)
  55 {
  56         read_spd(&spd[0], 0x50, id_only);
  57         read_spd(&spd[2], 0x51, id_only);
  58 }
  59
  60 void mainboard_early_init(int s3resume)
  61 {
  62         hybrid_graphics_init();
  63 }