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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* This file is created based on Intel Tiger Lake Processor PCH Datasheet
* Document number: 575857
* Chapter number: 2
*/
#include <device/device.h>
#include <device/pci.h>
#include <pc80/isa-dma.h>
#include <pc80/i8259.h>
#include <arch/io.h>
#include <device/pci_ops.h>
#include <arch/ioapic.h>
#include <intelblocks/itss.h>
#include <intelblocks/lpc_lib.h>
#include <intelblocks/pcr.h>
#include <soc/espi.h>
#include <soc/iomap.h>
#include <soc/irq.h>
#include <soc/pci_devs.h>
#include <soc/pcr_ids.h>
#include <soc/soc_chip.h>
/*
* As per the BWG, Chapter 5.9.1. "PCH BIOS component will reserve
* certain memory range as reserved range for BIOS usage.
* For this SOC, the range will be from 0FC800000h till FE7FFFFFh"
*/
static const struct lpc_mmio_range tgl_lpc_fixed_mmio_ranges[] = {
{ PCH_PRESERVED_BASE_ADDRESS, PCH_PRESERVED_BASE_SIZE },
{ 0, 0 }
};
const struct lpc_mmio_range *soc_get_fixed_mmio_ranges()
{
return tgl_lpc_fixed_mmio_ranges;
}
void soc_get_gen_io_dec_range(const struct device *dev, uint32_t *gen_io_dec)
{
const config_t *config = config_of(dev);
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 soc_setup_dmi_pcr_io_dec(uint32_t *gen_io_dec)
{
/* Mirror these same settings in DMI PCR */
pcr_write32(PID_DMI, PCR_DMI_LPCLGIR1, gen_io_dec[0]);
pcr_write32(PID_DMI, PCR_DMI_LPCLGIR2, gen_io_dec[1]);
pcr_write32(PID_DMI, PCR_DMI_LPCLGIR3, gen_io_dec[2]);
pcr_write32(PID_DMI, PCR_DMI_LPCLGIR4, gen_io_dec[3]);
}
#if ENV_RAMSTAGE
static void soc_mirror_dmi_pcr_io_dec(void)
{
struct device *dev = pcidev_on_root(PCH_DEV_SLOT_ESPI, 0);
uint32_t io_dec_arr[] = {
pci_read_config32(dev, ESPI_GEN1_DEC),
pci_read_config32(dev, ESPI_GEN2_DEC),
pci_read_config32(dev, ESPI_GEN3_DEC),
pci_read_config32(dev, ESPI_GEN4_DEC),
};
/* Mirror these same settings in DMI PCR */
soc_setup_dmi_pcr_io_dec(&io_dec_arr[0]);
}
static void pch_misc_init(void)
{
uint8_t reg8;
/* Setup NMI on errors, disable SERR */
reg8 = (inb(0x61)) & 0xf0;
outb((reg8 | (1 << 2)), 0x61);
/* Disable NMI sources */
outb((1 << 7), 0x70);
};
void lpc_soc_init(struct device *dev)
{
/* Legacy initialization */
isa_dma_init();
pch_misc_init();
/* Enable CLKRUN_EN for power gating ESPI */
lpc_enable_pci_clk_cntl();
/* Set ESPI Serial IRQ mode */
if (CONFIG(SERIRQ_CONTINUOUS_MODE))
lpc_set_serirq_mode(SERIRQ_CONTINUOUS);
else
lpc_set_serirq_mode(SERIRQ_QUIET);
/* Interrupt configuration */
pch_enable_ioapic();
pch_pirq_init();
setup_i8259();
i8259_configure_irq_trigger(9, 1);
soc_mirror_dmi_pcr_io_dec();
}
#endif
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