diff options
Diffstat (limited to 'src/mainboard/lenovo/t440p/romstage.c')
| -rw-r--r-- | src/mainboard/lenovo/t440p/romstage.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/mainboard/lenovo/t440p/romstage.c b/src/mainboard/lenovo/t440p/romstage.c index c8c630bfde..283a52b460 100644 --- a/src/mainboard/lenovo/t440p/romstage.c +++ b/src/mainboard/lenovo/t440p/romstage.c @@ -22,6 +22,9 @@ #include <northbridge/intel/haswell/pei_data.h> #include <southbridge/intel/common/gpio.h> #include <southbridge/intel/lynxpoint/pch.h> +#include <option.h> +#include <ec/lenovo/pmh7/pmh7.h> +#include <device/pci_ops.h> static const struct rcba_config_instruction rcba_config[] = { RCBA_SET_REG_16(D31IR, DIR_ROUTE(PIRQA, PIRQD, PIRQC, PIRQA)), @@ -100,4 +103,21 @@ void mainboard_romstage_entry(void) }; romstage_common(&romstage_params); + + u8 enable_peg; + if (get_option(&enable_peg, "enable_dual_graphics") != CB_SUCCESS) + enable_peg = 0; + + bool power_en = pmh7_dgpu_power_state(); + + if (enable_peg != power_en) + pmh7_dgpu_power_enable(!power_en); + + if (!enable_peg) { + // Hide disabled dGPU device + u32 reg32 = pci_read_config32(PCI_DEV(0, 0, 0), DEVEN); + reg32 &= ~DEVEN_D1F0EN; + + pci_write_config32(PCI_DEV(0, 0, 0), DEVEN, reg32); + } } |