/* SPDX-License-Identifier: GPL-2.0-only */

#include <stdint.h>
#include <string.h>
#include <cbfs.h>
#include <console/console.h>
#include <cpu/intel/haswell/haswell.h>
#include "ec/google/chromeec/ec.h"
#include <northbridge/intel/haswell/haswell.h>
#include <northbridge/intel/haswell/raminit.h>
#include <southbridge/intel/lynxpoint/pch.h>
#include <southbridge/intel/lynxpoint/lp_gpio.h>
#include <variant/gpio.h>
#include "../../onboard.h"
#include "../../variant.h"

const struct rcba_config_instruction rcba_config[] = {

	/*
	 *             GFX    INTA -> PIRQA (MSI)
	 * D28IP_P1IP  PCIE   INTA -> PIRQA
	 * D29IP_E1P   EHCI   INTA -> PIRQD
	 * D20IP_XHCI  XHCI   INTA -> PIRQC (MSI)
	 * D31IP_SIP   SATA   INTA -> PIRQF (MSI)
	 * D31IP_SMIP  SMBUS  INTB -> PIRQG
	 * D31IP_TTIP  THRT   INTC -> PIRQA
	 * D27IP_ZIP   HDA    INTA -> PIRQG (MSI)
	 */

	/* Device interrupt pin register (board specific) */
	RCBA_SET_REG_32(D31IP, (INTC << D31IP_TTIP) | (NOINT << D31IP_SIP2) |
			(INTB << D31IP_SMIP) | (INTA << D31IP_SIP)),
	RCBA_SET_REG_32(D29IP, (INTA << D29IP_E1P)),
	RCBA_SET_REG_32(D28IP, (INTA << D28IP_P1IP) | (INTC << D28IP_P3IP) |
			(INTB << D28IP_P4IP)),
	RCBA_SET_REG_32(D27IP, (INTA << D27IP_ZIP)),
	RCBA_SET_REG_32(D26IP, (INTA << D26IP_E2P)),
	RCBA_SET_REG_32(D22IP, (NOINT << D22IP_MEI1IP)),
	RCBA_SET_REG_32(D20IP, (INTA << D20IP_XHCI)),

	/* Device interrupt route registers */
	RCBA_SET_REG_32(D31IR, DIR_ROUTE(PIRQG, PIRQC, PIRQB, PIRQA)),/* LPC */
	RCBA_SET_REG_32(D29IR, DIR_ROUTE(PIRQD, PIRQD, PIRQD, PIRQD)),/* EHCI */
	RCBA_SET_REG_32(D28IR, DIR_ROUTE(PIRQA, PIRQB, PIRQC, PIRQD)),/* PCIE */
	RCBA_SET_REG_32(D27IR, DIR_ROUTE(PIRQG, PIRQG, PIRQG, PIRQG)),/* HDA */
	RCBA_SET_REG_32(D22IR, DIR_ROUTE(PIRQA, PIRQA, PIRQA, PIRQA)),/* ME */
	RCBA_SET_REG_32(D21IR, DIR_ROUTE(PIRQE, PIRQF, PIRQF, PIRQF)),/* SIO */
	RCBA_SET_REG_32(D20IR, DIR_ROUTE(PIRQC, PIRQC, PIRQC, PIRQC)),/* XHCI */
	RCBA_SET_REG_32(D23IR, DIR_ROUTE(PIRQH, PIRQH, PIRQH, PIRQH)),/* SDIO */

	/* Disable unused devices (board specific) */
	RCBA_RMW_REG_32(FD, ~0, PCH_DISABLE_ALWAYS),

	RCBA_END_CONFIG,
};

/* Copy SPD data for on-board memory */
static void copy_spd(struct pei_data *peid)
{
	const int gpio_vector[] = {13, 9, 47, -1};
	int spd_index = get_gpios(gpio_vector);
	char *spd_file;
	size_t spd_file_len;
	size_t spd_len = sizeof(peid->spd_data[0]);
	uint32_t board_version = PEPPY_BOARD_VERSION_PROTO;

	printk(BIOS_DEBUG, "SPD index %d\n", spd_index);
	spd_file = cbfs_boot_map_with_leak("spd.bin", CBFS_TYPE_SPD,
						&spd_file_len);
	if (!spd_file)
		die("SPD data not found.");

	if (spd_file_len < ((spd_index + 1) * sizeof(peid->spd_data[0]))) {
		printk(BIOS_ERR, "SPD index override to 0 - old hardware?\n");
		spd_index = 0;
	}

	if (spd_file_len < spd_len)
		die("Missing SPD data.");

	memcpy(peid->spd_data[0], spd_file + (spd_index * spd_len), spd_len);

	google_chromeec_get_board_version(&board_version);
	switch (board_version) {
	case PEPPY_BOARD_VERSION_PROTO:
		/* Index 0 is 2GB config with CH0 only. */
		if (spd_index == 0)
			peid->dimm_channel1_disabled = 3;
		else
			memcpy(peid->spd_data[1],
				spd_file + (spd_index * spd_len), spd_len);
		break;

	case PEPPY_BOARD_VERSION_EVT:
	default:
		/* Index 0-3 are 4GB config with both CH0 and CH1.
		 * Index 4-7 are 2GB config with CH0 only. */
		if (spd_index > 3)
			peid->dimm_channel1_disabled = 3;
		else
			memcpy(peid->spd_data[1],
				spd_file + (spd_index * spd_len), spd_len);
		break;
	}
}

void variant_romstage_entry(void)
{
	struct pei_data pei_data = {
		.pei_version = PEI_VERSION,
		.mchbar = (uintptr_t)DEFAULT_MCHBAR,
		.dmibar = (uintptr_t)DEFAULT_DMIBAR,
		.epbar = DEFAULT_EPBAR,
		.pciexbar = CONFIG_MMCONF_BASE_ADDRESS,
		.smbusbar = SMBUS_IO_BASE,
		.hpet_address = HPET_ADDR,
		.rcba = (uintptr_t)DEFAULT_RCBA,
		.pmbase = DEFAULT_PMBASE,
		.gpiobase = DEFAULT_GPIOBASE,
		.temp_mmio_base = 0xfed08000,
		.system_type = 5, /* ULT */
		.tseg_size = CONFIG_SMM_TSEG_SIZE,
		.spd_addresses = { 0xff, 0x00, 0xff, 0x00 },
		.ec_present = 1,
		// 0 = leave channel enabled
		// 1 = disable dimm 0 on channel
		// 2 = disable dimm 1 on channel
		// 3 = disable dimm 0+1 on channel
		.dimm_channel0_disabled = 2,
		.dimm_channel1_disabled = 2,
		.max_ddr3_freq = 1600,
		.usb_xhci_on_resume = 1,
		.usb2_ports = {
			/* Length, Enable, OCn#, Location */
			{ 0x0150, 1, USB_OC_PIN_SKIP, /* P0: LTE */
			  USB_PORT_MINI_PCIE },
			{ 0x0040, 1, 0,               /* P1: Port A, CN10 */
			  USB_PORT_BACK_PANEL },
			{ 0x0080, 1, USB_OC_PIN_SKIP, /* P2: CCD */
			  USB_PORT_INTERNAL },
			{ 0x0040, 1, USB_OC_PIN_SKIP, /* P3: BT */
			  USB_PORT_MINI_PCIE },
			{ 0x0040, 1, 2,               /* P4: Port B, CN6  */
			  USB_PORT_BACK_PANEL },
			{ 0x0000, 0, USB_OC_PIN_SKIP, /* P5: EMPTY */
			  USB_PORT_SKIP },
			{ 0x0150, 1, USB_OC_PIN_SKIP, /* P6: SD Card */
			  USB_PORT_FLEX },
			{ 0x0000, 0, USB_OC_PIN_SKIP, /* P7: EMPTY */
			  USB_PORT_SKIP },
		},
		.usb3_ports = {
			/* Enable, OCn# */
			{ 1, 0               }, /* P1; Port A, CN6 */
			{ 0, USB_OC_PIN_SKIP }, /* P2; */
			{ 0, USB_OC_PIN_SKIP }, /* P3; */
			{ 0, USB_OC_PIN_SKIP }, /* P4; */
		},
	};

	struct romstage_params romstage_params = {
		.pei_data = &pei_data,
		.gpio_map = &mainboard_gpio_map,
		.rcba_config = &rcba_config[0],
		.copy_spd = copy_spd,
	};

	/* Call into the real romstage main with this board's attributes. */
	romstage_common(&romstage_params);
}
