systemagent.c

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/* 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();
}