diff options
Diffstat (limited to 'src/soc/intel/skylake/romstage/systemagent.c')
| -rw-r--r-- | src/soc/intel/skylake/romstage/systemagent.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/romstage/systemagent.c b/src/soc/intel/skylake/romstage/systemagent.c new file mode 100644 index 0000000000..7a43917601 --- /dev/null +++ b/src/soc/intel/skylake/romstage/systemagent.c @@ -0,0 +1,55 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007-2010 coresystems GmbH + * Copyright (C) 2014 Google Inc. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <stdlib.h> +#include <arch/io.h> +#include <device/pci_def.h> +#include <reg_script.h> +#include <soc/iomap.h> +#include <soc/pci_devs.h> +#include <soc/romstage.h> +#include <soc/systemagent.h> + +static const struct reg_script systemagent_early_init_script[] = { + REG_PCI_WRITE32(MCHBAR, MCH_BASE_ADDRESS | 1), + REG_PCI_WRITE32(DMIBAR, DMI_BASE_ADDRESS | 1), + REG_PCI_WRITE32(EPBAR, EP_BASE_ADDRESS | 1), + REG_MMIO_WRITE32(MCH_BASE_ADDRESS + EDRAMBAR, EDRAM_BASE_ADDRESS | 1), + REG_MMIO_WRITE32(MCH_BASE_ADDRESS + GDXCBAR, GDXC_BASE_ADDRESS | 1), + + /* Set C0000-FFFFF to access RAM on both reads and writes */ + REG_PCI_WRITE8(PAM0, 0x30), + REG_PCI_WRITE8(PAM1, 0x33), + REG_PCI_WRITE8(PAM2, 0x33), + REG_PCI_WRITE8(PAM3, 0x33), + REG_PCI_WRITE8(PAM4, 0x33), + REG_PCI_WRITE8(PAM5, 0x33), + REG_PCI_WRITE8(PAM6, 0x33), + + /* Device enable: IGD and Mini-HD */ + REG_PCI_WRITE32(DEVEN, DEVEN_D0EN | DEVEN_D2EN | DEVEN_D3EN), + + REG_SCRIPT_END +}; + +void systemagent_early_init(void) +{ + reg_script_run_on_dev(SA_DEV_ROOT, systemagent_early_init_script); +} |