Angel Pons | 89ab250 | 2020-04-03 01:22:28 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Edward O'Callaghan | 956c298 | 2014-03-16 17:09:58 +1100 | [diff] [blame] | 2 | |
| 3 | #include <stdint.h> |
Kyösti Mälkki | f1b58b7 | 2019-03-01 13:43:02 +0200 | [diff] [blame] | 4 | #include <device/pci_ops.h> |
Edward O'Callaghan | 956c298 | 2014-03-16 17:09:58 +1100 | [diff] [blame] | 5 | #include <device/pci_def.h> |
Edward O'Callaghan | 77757c2 | 2015-01-04 21:33:39 +1100 | [diff] [blame] | 6 | #include <northbridge/intel/sandybridge/raminit_native.h> |
Arthur Heymans | 58a8953 | 2018-06-12 22:58:19 +0200 | [diff] [blame] | 7 | #include <southbridge/intel/bd82x6x/pch.h> |
Patrick Rudolph | db27e338 | 2017-07-27 18:00:59 +0200 | [diff] [blame] | 8 | #include <northbridge/intel/sandybridge/sandybridge.h> |
| 9 | #include <drivers/lenovo/hybrid_graphics/hybrid_graphics.h> |
| 10 | #include <device/device.h> |
Patrick Rudolph | db27e338 | 2017-07-27 18:00:59 +0200 | [diff] [blame] | 11 | |
| 12 | static void hybrid_graphics_init(void) |
| 13 | { |
| 14 | bool peg, igd; |
| 15 | u32 reg32; |
| 16 | |
| 17 | early_hybrid_graphics(&igd, &peg); |
| 18 | |
Evgeny Zinoviev | 384e9ae | 2018-08-30 02:18:48 +0300 | [diff] [blame] | 19 | if (peg && igd) |
| 20 | return; |
| 21 | |
Patrick Rudolph | db27e338 | 2017-07-27 18:00:59 +0200 | [diff] [blame] | 22 | /* Hide disabled devices */ |
| 23 | reg32 = pci_read_config32(PCI_DEV(0, 0, 0), DEVEN); |
| 24 | reg32 &= ~(DEVEN_PEG10 | DEVEN_IGD); |
| 25 | |
| 26 | if (peg) |
| 27 | reg32 |= DEVEN_PEG10; |
| 28 | |
| 29 | if (igd) |
| 30 | reg32 |= DEVEN_IGD; |
| 31 | else |
| 32 | /* Disable IGD VGA decode, no GTT or GFX stolen */ |
| 33 | pci_write_config16(PCI_DEV(0, 0, 0), GGC, 2); |
| 34 | |
| 35 | pci_write_config32(PCI_DEV(0, 0, 0), DEVEN, reg32); |
| 36 | } |
Edward O'Callaghan | 956c298 | 2014-03-16 17:09:58 +1100 | [diff] [blame] | 37 | |
Patrick Rudolph | db27e338 | 2017-07-27 18:00:59 +0200 | [diff] [blame] | 38 | void mainboard_early_init(int s3resume) |
| 39 | { |
| 40 | hybrid_graphics_init(); |
Vladimir Serbinenko | 609bd94 | 2016-01-31 14:00:54 +0100 | [diff] [blame] | 41 | } |