diff options
Diffstat (limited to 'src/soc/intel/alderlake/romstage/systemagent.c')
| -rw-r--r-- | src/soc/intel/alderlake/romstage/systemagent.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/soc/intel/alderlake/romstage/systemagent.c b/src/soc/intel/alderlake/romstage/systemagent.c new file mode 100644 index 0000000000..150ffb5dfa --- /dev/null +++ b/src/soc/intel/alderlake/romstage/systemagent.c @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +/* + * This file is created based on Intel Alder Lake Processor SA Datasheet + * Document number: 619503 + * Chapter number: 3 + */ + +#include <intelblocks/systemagent.h> +#include <soc/iomap.h> +#include <soc/romstage.h> +#include <soc/systemagent.h> + +void systemagent_early_init(void) +{ + static const struct sa_mmio_descriptor soc_fixed_pci_resources[] = { + { MCHBAR, MCH_BASE_ADDRESS, MCH_BASE_SIZE, "MCHBAR" }, + { DMIBAR, DMI_BASE_ADDRESS, DMI_BASE_SIZE, "DMIBAR" }, + { EPBAR, EP_BASE_ADDRESS, EP_BASE_SIZE, "EPBAR" }, + }; + + static const struct sa_mmio_descriptor soc_fixed_mch_resources[] = { + { REGBAR, REG_BASE_ADDRESS, REG_BASE_SIZE, "REGBAR" }, + { EDRAMBAR, EDRAM_BASE_ADDRESS, EDRAM_BASE_SIZE, "EDRAMBAR" }, + }; + + /* Set Fixed MMIO address into PCI configuration space */ + sa_set_pci_bar(soc_fixed_pci_resources, + ARRAY_SIZE(soc_fixed_pci_resources)); + /* Set Fixed MMIO address into MCH base address */ + sa_set_mch_bar(soc_fixed_mch_resources, + ARRAY_SIZE(soc_fixed_mch_resources)); + /* Enable PAM registers */ + enable_pam_region(); +} |