diff options
Diffstat (limited to 'src/soc/intel/common/block/systemagent/systemagent.c')
| -rw-r--r-- | src/soc/intel/common/block/systemagent/systemagent.c | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/src/soc/intel/common/block/systemagent/systemagent.c b/src/soc/intel/common/block/systemagent/systemagent.c index 2da3992ca4..0fab7d9619 100644 --- a/src/soc/intel/common/block/systemagent/systemagent.c +++ b/src/soc/intel/common/block/systemagent/systemagent.c @@ -1,7 +1,7 @@ /* * This file is part of the coreboot project. * - * Copyright (C) 2017-2018 Intel Corporation. + * Copyright (C) 2017-2020 Intel Corporation. * Copyright (C) 2019 Siemens AG * * This program is free software; you can redistribute it and/or modify @@ -14,12 +14,13 @@ * GNU General Public License for more details. */ -#include <device/pci_ops.h> #include <cbmem.h> +#include <console/console.h> #include <device/device.h> #include <device/pci.h> #include <device/pci_ids.h> #include <intelblocks/acpi.h> +#include <intelblocks/cfg.h> #include <intelblocks/systemagent.h> #include <smbios.h> #include <soc/iomap.h> @@ -54,6 +55,34 @@ __weak unsigned long sa_write_acpi_tables(struct device *dev, } /* + * This function will get above 4GB mmio enable config specific to soc. + * + * Return values: + * 0 = Above 4GB memory is not enable + * 1 = Above 4GB memory is enable + */ +static int get_enable_above_4GB_mmio(void) +{ + const struct soc_intel_common_config *common_config; + common_config = chip_get_common_soc_structure(); + + return common_config->enable_above_4GB_mmio; +} + +/* Fill MMIO resource above 4GB into GNVS */ +void sa_fill_gnvs(global_nvs_t *gnvs) +{ + if (get_enable_above_4GB_mmio()) { + gnvs->e4gm = 1; + gnvs->a4gb = ABOVE_4GB_MEM_BASE_ADDRESS; + gnvs->a4gs = ABOVE_4GB_MEM_BASE_SIZE; + printk(BIOS_DEBUG, + "PCI space above 4GB MMIO is from 0x%llx to len = 0x%llx\n", + gnvs->a4gb, gnvs->a4gs); + } +} + +/* * Add all known fixed MMIO ranges that hang off the host bridge/memory * controller device. */ |