/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2006 AMD
 * Written by Yinghai Lu <yinghailu@amd.com> for AMD.
 *
 * Copyright (C) 2006 MSI
 * Written by Bingxun Shi <bingxunshi@gmail.com> for MSI.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <stdint.h>
#include <string.h>
#include <device/pci_def.h>
#include <arch/io.h>
#include <device/pnp_def.h>
#include <cpu/x86/lapic.h>
#include <pc80/mc146818rtc.h>
#include <console/console.h>
#include <cpu/amd/model_fxx_rev.h>
#include <southbridge/nvidia/mcp55/mcp55.h>
#include <northbridge/amd/amdk8/raminit.h>
#include <delay.h>
#include <cpu/x86/lapic.h>

#include <superio/winbond/common/winbond.h>
#include <superio/winbond/w83627ehg/w83627ehg.h>
#include <cpu/amd/car.h>
#include <cpu/x86/bist.h>
#include <spd.h>
#include "northbridge/amd/amdk8/setup_resource_map.c"
#include <device/pci_ids.h>

#define SERIAL_DEV PNP_DEV(0x2e, W83627EHG_SP1)

unsigned get_sbdn(unsigned bus);

unsigned get_sbdn(unsigned bus)
{
	pci_devfn_t dev;

	/* Find the device. */
	dev = pci_locate_device_on_bus(PCI_ID(PCI_VENDOR_ID_NVIDIA,
				       PCI_DEVICE_ID_NVIDIA_MCP55_HT), bus);

	return (dev >> 15) & 0x1f;
}

void memreset(int controllers, const struct mem_controller *ctrl) { }

void activate_spd_rom(const struct mem_controller *ctrl)
{
#define SMBUS_SWITCH1 0x70
#define SMBUS_SWITCH2 0x72
	unsigned device=(ctrl->channel0[0])>>8;
	smbus_send_byte(SMBUS_SWITCH1, device);
	smbus_send_byte(SMBUS_SWITCH2, (device >> 4) & 0x0f);
}

int spd_read_byte(unsigned device, unsigned address)
{
	return smbus_read_byte(device, address);
}

#include <northbridge/amd/amdk8/f.h>
#include "northbridge/amd/amdk8/incoherent_ht.c"
#include "lib/generic_sdram.c"
#include "resourcemap.c"
#include "cpu/amd/dualcore/dualcore.c"
#include <southbridge/nvidia/mcp55/early_setup_ss.h>

//set GPIO to input mode
#define MCP55_MB_SETUP \
		RES_PORT_IO_8, SYSCTRL_IO_BASE + 0xc0+15, ~(0xff), ((0 << 4)|(0 << 2)|(0 << 0)),/* M8,GPIO16, PCIXA_PRSNT2_L*/ \
		RES_PORT_IO_8, SYSCTRL_IO_BASE + 0xc0+44, ~(0xff), ((0 << 4)|(0 << 2)|(0 << 0)),/* P5,GPIO45, PCIXA_PRSNT1_L*/ \
		RES_PORT_IO_8, SYSCTRL_IO_BASE + 0xc0+16, ~(0xff), ((0 << 4)|(0 << 2)|(0 << 0)),/* K4,GPIO17, PCIXB_PRSNT1_L*/ \
		RES_PORT_IO_8, SYSCTRL_IO_BASE + 0xc0+45, ~(0xff), ((0 << 4)|(0 << 2)|(0 << 0)),/* P7,GPIO46, PCIXB_PRSNT2_L*/ \

#include "southbridge/nvidia/mcp55/early_setup_car.c"
#include "cpu/amd/model_fxx/init_cpus.c"
#include "northbridge/amd/amdk8/early_ht.c"

/* FIXME
 * Dummy method to allow build
 * Determine if this board / CPU should support
 * FID/VID and implement proper support if so
 */
#if IS_ENABLED(CONFIG_SET_FIDVID)
void init_fidvid_ap(u32 bsp_apicid, u32 apicid) { }
#endif

static void sio_setup(void)
{
	uint32_t dword;
	uint8_t byte;

	byte = pci_read_config32(PCI_DEV(0, MCP55_DEVN_BASE+1 , 0), 0x7b);
	byte |= 0x20;
	pci_write_config8(PCI_DEV(0, MCP55_DEVN_BASE+1 , 0), 0x7b, byte);

	dword = pci_read_config32(PCI_DEV(0, MCP55_DEVN_BASE+1 , 0), 0xa0);
	dword |= (1 << 0);
	pci_write_config32(PCI_DEV(0, MCP55_DEVN_BASE+1 , 0), 0xa0, dword);
}

//CPU 1 mem is on SMBUS_HUB channel 2, and CPU 2 mem is on channel 1.
#define RC0 (2 << 8)
#define RC1 (1 << 8)

void cache_as_ram_main(unsigned long bist, unsigned long cpu_init_detectedx)
{
	static const uint16_t spd_addr[] = {
		// Node 0
		RC0|DIMM0, RC0|DIMM2, RC0|DIMM4, RC0|DIMM6,
		RC0|DIMM1, RC0|DIMM3, RC0|DIMM5, RC0|DIMM7,
		// node 1
		RC1|DIMM0, RC1|DIMM2, RC1|DIMM4, RC1|DIMM6,
		RC1|DIMM1, RC1|DIMM3, RC1|DIMM5, RC1|DIMM7,
	};

	unsigned bsp_apicid = 0;
	int needs_reset;
	struct sys_info *sysinfo = &sysinfo_car;

	if (!cpu_init_detectedx && boot_cpu()) {
		/* Nothing special needs to be done to find bus 0 */
		/* Allow the HT devices to be found */
		enumerate_ht_chain();
		sio_setup();
	}

	if (bist == 0) {
		//init_cpus(cpu_init_detectedx);
		bsp_apicid = init_cpus(cpu_init_detectedx, sysinfo);
	}

	winbond_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
	console_init();

	/* Halt if there was a built in self test failure */
	report_bist_failure(bist);

	setup_ms9282_resource_map();

	setup_coherent_ht_domain();

	wait_all_core0_started();

#if IS_ENABLED(CONFIG_LOGICAL_CPUS)
	// It is said that we should start core1 after all core0 launched
	start_other_cores();
	//wait_all_other_cores_started(bsp_apicid);
#endif
	ht_setup_chains_x(sysinfo); // it will init sblnk and sbbusn, nodes, sbdn

	init_timer(); /* Need to use TMICT to synchronize FID/VID. */

	needs_reset = optimize_link_coherent_ht();
	needs_reset |= optimize_link_incoherent_ht(sysinfo);
	needs_reset |= mcp55_early_setup_x();
	if (needs_reset) {
		printk(BIOS_INFO, "ht reset -\n");
		soft_reset();
	}

	//It's the time to set ctrl now;
	fill_mem_ctrl(sysinfo->nodes, sysinfo->ctrl, spd_addr);

	enable_smbus();

	sdram_initialize(sysinfo->nodes, sysinfo->ctrl, sysinfo);
}