diff options
Diffstat (limited to 'src/mainboard/lenovo/t430/romstage.c')
| -rw-r--r-- | src/mainboard/lenovo/t430/romstage.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/mainboard/lenovo/t430/romstage.c b/src/mainboard/lenovo/t430/romstage.c index eb2d29e8cf..eb558ac1b8 100644 --- a/src/mainboard/lenovo/t430/romstage.c +++ b/src/mainboard/lenovo/t430/romstage.c @@ -18,6 +18,33 @@ #include <northbridge/intel/sandybridge/raminit_native.h> #include <southbridge/intel/bd82x6x/pch.h> #include <ec/lenovo/pmh7/pmh7.h> +#include <drivers/lenovo/hybrid_graphics/hybrid_graphics.h> +#include <northbridge/intel/sandybridge/sandybridge.h> +#include <device/device.h> +#include <device/pci.h> + +static void hybrid_graphics_init(void) +{ + bool peg, igd; + u32 reg32; + + early_hybrid_graphics(&igd, &peg); + + /* Hide disabled devices */ + reg32 = pci_read_config32(PCI_DEV(0, 0, 0), DEVEN); + reg32 &= ~(DEVEN_PEG10 | DEVEN_IGD); + + if (peg) + reg32 |= DEVEN_PEG10; + + if (igd) + reg32 |= DEVEN_IGD; + else + /* Disable IGD VGA decode, no GTT or GFX stolen */ + pci_write_config16(PCI_DEV(0, 0, 0), GGC, 2); + + pci_write_config32(PCI_DEV(0, 0, 0), DEVEN, reg32); +} void pch_enable_lpc(void) { @@ -57,6 +84,7 @@ const struct southbridge_usb_port mainboard_usb_ports[] = { void mainboard_early_init(int s3resume) { + hybrid_graphics_init(); } void mainboard_config_superio(void) |