From 2871e0e78c309041a0f3d6e0d7dca99bcaf9f12a Mon Sep 17 00:00:00 2001 From: Subrata Banik Date: Sun, 27 Sep 2020 11:30:58 +0530 Subject: soc/intel/alderlake/ramstage: Do initial SoC commit till ramstage List of changes: 1. Add required SoC programming till ramstage 2. Include only required headers into include/soc 3. Add CPU, PCH and SA EDS document number and chapter number 4. Fill required FSP-S UPD to call FSP-S API Change-Id: I3394f585d66b14ece67cde9e45ffa1177406f35f Signed-off-by: Subrata Banik Reviewed-on: https://review.coreboot.org/c/coreboot/+/45759 Tested-by: build bot (Jenkins) Reviewed-by: Angel Pons --- src/soc/intel/alderlake/systemagent.c | 71 +++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 src/soc/intel/alderlake/systemagent.c (limited to 'src/soc/intel/alderlake/systemagent.c') diff --git a/src/soc/intel/alderlake/systemagent.c b/src/soc/intel/alderlake/systemagent.c new file mode 100644 index 0000000000..3e7a404c45 --- /dev/null +++ b/src/soc/intel/alderlake/systemagent.c @@ -0,0 +1,71 @@ +/* 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 +#include +#include +#include +#include + +/* + * SoC implementation + * + * Add all known fixed memory ranges for Host Controller/Memory + * controller. + */ +void soc_add_fixed_mmio_resources(struct device *dev, int *index) +{ + static const struct sa_mmio_descriptor soc_fixed_resources[] = { + { PCIEXBAR, CONFIG_MMCONF_BASE_ADDRESS, CONFIG_SA_PCIEX_LENGTH, + "PCIEXBAR" }, + { MCHBAR, MCH_BASE_ADDRESS, MCH_BASE_SIZE, "MCHBAR" }, + { DMIBAR, DMI_BASE_ADDRESS, DMI_BASE_SIZE, "DMIBAR" }, + { EPBAR, EP_BASE_ADDRESS, EP_BASE_SIZE, "EPBAR" }, + { REGBAR, REG_BASE_ADDRESS, REG_BASE_SIZE, "REGBAR" }, + { EDRAMBAR, EDRAM_BASE_ADDRESS, EDRAM_BASE_SIZE, "EDRAMBAR" }, + }; + + sa_add_fixed_mmio_resources(dev, index, soc_fixed_resources, + ARRAY_SIZE(soc_fixed_resources)); + + /* Add Vt-d resources if VT-d is enabled */ + if ((pci_read_config32(dev, CAPID0_A) & VTD_DISABLE)) + return; + + sa_add_fixed_mmio_resources(dev, index, soc_vtd_resources, + ARRAY_SIZE(soc_vtd_resources)); +} + +/* + * SoC implementation + * + * Perform System Agent Initialization during Ramstage phase. + */ +void soc_systemagent_init(struct device *dev) +{ + /* Enable Power Aware Interrupt Routing */ + enable_power_aware_intr(); + + /* Enable BIOS Reset CPL */ + enable_bios_reset_cpl(); + /* TODO: Add set_power_limits() */ +} + +uint32_t soc_systemagent_max_chan_capacity_mib(u8 capid0_a_ddrsz) +{ + switch (capid0_a_ddrsz) { + case 1: + return 8192; + case 2: + return 4096; + case 3: + return 2048; + default: + return 65536; + } +} -- cgit v1.2.3