diff options
Diffstat (limited to 'src/mainboard/lenovo/t530/early_init.c')
-rw-r--r-- | src/mainboard/lenovo/t530/early_init.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/src/mainboard/lenovo/t530/early_init.c b/src/mainboard/lenovo/t530/early_init.c new file mode 100644 index 0000000000..34c61e4e49 --- /dev/null +++ b/src/mainboard/lenovo/t530/early_init.c @@ -0,0 +1,62 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007-2010 coresystems GmbH + * Copyright (C) 2011 The ChromiumOS Authors. All rights reserved. + * Copyright (C) 2014 Vladimir Serbinenko + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <stdint.h> +#include <device/pci_ops.h> +#include <device/pci_def.h> +#include <northbridge/intel/sandybridge/raminit_native.h> +#include <southbridge/intel/bd82x6x/pch.h> +#include <northbridge/intel/sandybridge/sandybridge.h> +#include <drivers/lenovo/hybrid_graphics/hybrid_graphics.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); + + if (peg && igd) + return; + + /* 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 mainboard_pch_lpc_setup(void) +{ + pci_write_config32(PCH_LPC_DEV, ETR3, 0x10000); +} + +void mainboard_early_init(int s3resume) +{ + hybrid_graphics_init(); +} |