/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */

#include <acpi/acpigen.h>
#include <arch/ioapic.h>
#include <arch/smp/mpspec.h>
#include <cbmem.h>
#include <cf9_reset.h>
#include <console/console.h>
#include <cpu/x86/smm.h>
#include <device/pci.h>
#include <intelblocks/acpi.h>
#include <soc/iomap.h>
#include <soc/nvs.h>
#include <soc/pm.h>

#include "chip.h"

#define SCI_INT_NUM		9

unsigned long southbridge_write_acpi_tables(const struct device *device, unsigned long current,
						struct acpi_rsdp *rsdp)
{
	current = acpi_write_hpet(device, current, rsdp);
	current = (ALIGN(current, 16));
	printk(BIOS_DEBUG, "current = %lx\n", current);
	return current;
}

unsigned long acpi_fill_mcfg(unsigned long current)
{
	current += acpi_create_mcfg_mmconfig((acpi_mcfg_mmconfig_t *)current,
		CONFIG_MMCONF_BASE_ADDRESS, 0, 0, 255);
	return current;
}

void southbridge_inject_dsdt(const struct device *device)
{
	global_nvs_t *gnvs;

	gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS);
	if (!gnvs) {
		gnvs = cbmem_add(CBMEM_ID_ACPI_GNVS, 0x2000);
		if (gnvs)
			memset(gnvs, 0, sizeof(*gnvs));
	}

	if (gnvs) {
		acpi_create_gnvs(gnvs);
		/* TODO: tell SMI about it, if HAVE_SMI_HANDLER */
		// smm_setup_structures(gnvs, NULL, NULL);

		/* Add it to DSDT.  */
		printk(BIOS_SPEW, "%s injecting NVSA with 0x%x\n", __FILE__, (uint32_t)gnvs);
		acpigen_write_scope("\\");
		acpigen_write_name_dword("NVSA", (uint32_t)gnvs);
		acpigen_pop_len();
	}
}

void acpi_create_gnvs(struct global_nvs_t *gnvs)
{
	config_t *config = config_of_soc();
	(void) config;
	/* not implemented yet */
}

static unsigned long acpi_madt_irq_overrides(unsigned long current)
{
	int sci = SCI_INT_NUM;
	uint16_t flags = MP_IRQ_TRIGGER_LEVEL;

	/* INT_SRC_OVR */
	current += acpi_create_madt_irqoverride((void *)current, 0, 0, 2, 0);

	flags |= soc_madt_sci_irq_polarity(sci);

	/* SCI */
	current += acpi_create_madt_irqoverride((void *)current, 0, sci, sci, flags);

	return current;
}

unsigned long acpi_fill_madt(unsigned long current)
{
	/* Local APICs */
	current = acpi_create_madt_lapics(current);

	/* IOAPIC */
	current += acpi_create_madt_ioapic((void *)current, 2, IO_APIC_ADDR, 0);

	return acpi_madt_irq_overrides(current);
}

int soc_madt_sci_irq_polarity(int sci)
{
	if (sci >= 20)
		return MP_IRQ_POLARITY_LOW;
	else
		return MP_IRQ_POLARITY_HIGH;
}

void acpi_fill_fadt(acpi_fadt_t *fadt)
{

	const uint16_t pmbase = ACPI_BASE_ADDRESS;

	fadt->header.revision = get_acpi_table_revision(FADT);
	fadt->sci_int = SCI_INT_NUM;

	fadt->pm1a_evt_blk = pmbase + PM1_STS;
	fadt->pm1b_evt_blk = 0x0;
	fadt->pm1a_cnt_blk = pmbase + PM1_CNT;
	fadt->pm1b_cnt_blk = 0x0;

	fadt->gpe0_blk = pmbase + GPE0_STS(0);

	fadt->pm1_evt_len = 4;
	fadt->pm1_cnt_len = 2;

	/* GPE0 STS/EN pairs each 32 bits wide. */
	fadt->gpe0_blk_len = 2 * GPE0_REG_MAX * sizeof(uint32_t);

	fadt->flush_size = 0x400;	/* twice of cache size */
	fadt->flush_stride = 0x10;	/* Cache line width  */
	fadt->duty_offset = 1;
	fadt->day_alrm = 0xd;

	fadt->flags = ACPI_FADT_WBINVD | ACPI_FADT_C1_SUPPORTED | ACPI_FADT_C2_MP_SUPPORTED |
			ACPI_FADT_RESET_REGISTER | ACPI_FADT_PLATFORM_CLOCK;

	fadt->reset_reg.space_id = 1;
	fadt->reset_reg.bit_width = 8;
	fadt->reset_reg.addrl = RST_CNT;
	fadt->reset_reg.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS;
	fadt->reset_value = RST_CPU | SYS_RST;

	fadt->x_pm1a_evt_blk.space_id = 1;
	fadt->x_pm1a_evt_blk.bit_width = fadt->pm1_evt_len * 8;
	fadt->x_pm1a_evt_blk.addrl = pmbase + PM1_STS;

	fadt->x_pm1b_evt_blk.space_id = 1;

	fadt->x_pm1a_cnt_blk.space_id = 1;
	fadt->x_pm1a_cnt_blk.bit_width = fadt->pm1_cnt_len * 8;
	fadt->x_pm1a_cnt_blk.addrl = pmbase + PM1_CNT;

	fadt->x_pm1b_cnt_blk.space_id = 1;

	fadt->x_gpe1_blk.space_id = 1;

	if (CONFIG(HAVE_SMI_HANDLER)) {
		fadt->smi_cmd = APM_CNT;
		fadt->acpi_enable = APM_CNT_ACPI_ENABLE;
		fadt->acpi_disable = APM_CNT_ACPI_DISABLE;
		fadt->s4bios_req = 0;
		fadt->pstate_cnt = 0;
		fadt->cst_cnt = 0;
	} else {
		fadt->smi_cmd = 0;
		fadt->acpi_enable = 0;
		fadt->acpi_disable = 0;
		fadt->s4bios_req = 0;
		fadt->pstate_cnt = 0;
		fadt->cst_cnt = 0;
	}

	/*  General-Purpose Event Registers */
	fadt->x_gpe0_blk.space_id = ACPI_ADDRESS_SPACE_IO;
	fadt->x_gpe0_blk.bit_width = 64; /* EventStatus + EventEnable */
	fadt->x_gpe0_blk.bit_offset = 0;
	fadt->x_gpe0_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS;
	fadt->x_gpe0_blk.addrl = fadt->gpe0_blk;
	fadt->x_gpe0_blk.addrh = 0;

	fadt->x_gpe1_blk.space_id = ACPI_ADDRESS_SPACE_IO;
	fadt->x_gpe1_blk.bit_width = 0;
	fadt->x_gpe1_blk.bit_offset = 0;
	fadt->x_gpe1_blk.access_size = 0;
	fadt->x_gpe1_blk.addrl = 0;
	fadt->x_gpe1_blk.addrh = 0;
}