lpc.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <device/device.h>
#include <device/pci.h>
#include <pc80/isa-dma.h>
#include <pc80/i8259.h>
#include <arch/ioapic.h>
#include <intelblocks/itss.h>
#include <intelblocks/lpc_lib.h>
#include <soc/iomap.h>
#include <soc/pcr_ids.h>
#include <soc/intel/common/block/lpc/lpc_def.h>
 
#include "chip.h"
 
void soc_get_gen_io_dec_range(uint32_t gen_io_dec[LPC_NUM_GENERIC_IO_RANGES])
{
        const config_t *config = config_of_soc();
 
        gen_io_dec[0] = config->gen1_dec;
        gen_io_dec[1] = config->gen2_dec;
        gen_io_dec[2] = config->gen3_dec;
        gen_io_dec[3] = config->gen4_dec;
}
 
void lpc_soc_init(struct device *dev)
{
        const config_t *const config = config_of(dev);
 
        /* Legacy initialization */
        isa_dma_init();
        pch_misc_init();
 
        /* Enable BIOS updates outside of SMM */
        pci_and_config8(PCH_DEV_LPC, 0xdc, ~(1 << 5));
 
        /* Enable CLKRUN_EN for power gating LPC */
        lpc_enable_pci_clk_cntl();
 
        /* Set LPC Serial IRQ mode */
        lpc_set_serirq_mode(config->serirq_mode);
 
        /* Interrupt configuration */
        pch_enable_ioapic();
        pch_pirq_init();
        setup_i8259();
        i8259_configure_irq_trigger(9, 1);
}