arch/x86/include/asm/arch-broadwell/pei_data.h

/*
 * From Coreboot soc/intel/broadwell/include/soc/pei_data.h
 *
 * Copyright (C) 2014 Google Inc.
 *
 * SPDX-License-Identifier:	BSD-3-Clause
 */

#ifndef ASM_ARCH_PEI_DATA_H
#define ASM_ARCH_PEI_DATA_H

#include <linux/linkage.h>

#define PEI_VERSION 22

typedef void asmlinkage (*tx_byte_func)(unsigned char byte);

enum board_type {
	BOARD_TYPE_CRB_MOBILE = 0,	/* CRB Mobile */
	BOARD_TYPE_CRB_DESKTOP,		/* CRB Desktop */
	BOARD_TYPE_USER1,		/* SV mobile */
	BOARD_TYPE_USER2,		/* SV desktop */
	BOARD_TYPE_USER3,		/* SV server */
	BOARD_TYPE_ULT,			/* ULT */
	BOARD_TYPE_CRB_EMBDEDDED,	/* CRB Embedded */
	BOARD_TYPE_UNKNOWN,
};

#define MAX_USB2_PORTS 14
#define MAX_USB3_PORTS 6
#define USB_OC_PIN_SKIP 8

enum usb2_port_location {
	USB_PORT_BACK_PANEL = 0,
	USB_PORT_FRONT_PANEL,
	USB_PORT_DOCK,
	USB_PORT_MINI_PCIE,
	USB_PORT_FLEX,
	USB_PORT_INTERNAL,
	USB_PORT_SKIP,
	USB_PORT_NGFF_DEVICE_DOWN,
};

struct usb2_port_setting {
	/*
	 * Usb Port Length:
	 * [16:4] = length in inches in octal format
	 * [3:0]  = decimal point
	 */
	uint16_t length;
	uint8_t enable;
	uint8_t oc_pin;
	uint8_t location;
} __packed;

struct usb3_port_setting {
	uint8_t enable;
	uint8_t oc_pin;
	/*
	 * Set to 0 if trace length is > 5 inches
	 * Set to 1 if trace length is <= 5 inches
	 */
	uint8_t fixed_eq;
} __packed;


struct pei_data {
	uint32_t pei_version;

	enum board_type board_type;
	int boot_mode;
	int ec_present;
	int usbdebug;

	/* Base addresses */
	uint32_t pciexbar;
	uint16_t smbusbar;
	uint32_t xhcibar;
	uint32_t ehcibar;
	uint32_t gttbar;
	uint32_t rcba;
	uint32_t pmbase;
	uint32_t gpiobase;
	uint32_t temp_mmio_base;
	uint32_t tseg_size;

	/*
	 * 0 = leave channel enabled
	 * 1 = disable dimm 0 on channel
	 * 2 = disable dimm 1 on channel
	 * 3 = disable dimm 0+1 on channel
	 */
	int dimm_channel0_disabled;
	int dimm_channel1_disabled;
	/* Set to 0 for memory down */
	uint8_t spd_addresses[4];
	/* Enable 2x Refresh Mode */
	int ddr_refresh_2x;
	/* DQ pins are interleaved on board */
	int dq_pins_interleaved;
	/* Limit DDR3 frequency */
	int max_ddr3_freq;
	/* Disable self refresh */
	int disable_self_refresh;
	/* Disable cmd power/CKEPD */
	int disable_cmd_pwr;

	/* USB port configuration */
	struct usb2_port_setting usb2_ports[MAX_USB2_PORTS];
	struct usb3_port_setting usb3_ports[MAX_USB3_PORTS];

	/*
	 * USB3 board specific PHY tuning
	 */

	/* Valid range: 0x69 - 0x80 */
	uint8_t usb3_txout_volt_dn_amp_adj[MAX_USB3_PORTS];
	/* Valid range: 0x80 - 0x9c */
	uint8_t usb3_txout_imp_sc_volt_amp_adj[MAX_USB3_PORTS];
	/* Valid range: 0x39 - 0x80 */
	uint8_t usb3_txout_de_emp_adj[MAX_USB3_PORTS];
	/* Valid range: 0x3d - 0x4a */
	uint8_t usb3_txout_imp_adj_volt_amp[MAX_USB3_PORTS];

	/* Console output function */
	tx_byte_func tx_byte;

	/*
	 * DIMM SPD data for memory down configurations
	 * [CHANNEL][SLOT][SPD]
	 */
	uint8_t spd_data[2][2][512];

	/*
	 * LPDDR3 DQ byte map
	 * [CHANNEL][ITERATION][2]
	 *
	 * Maps which PI clocks are used by what LPDDR DQ Bytes (from CPU side)
	 * DQByteMap[0] - ClkDQByteMap:
	 * - If clock is per rank, program to [0xFF, 0xFF]
	 * - If clock is shared by 2 ranks, program to [0xFF, 0] or [0, 0xFF]
	 * - If clock is shared by 2 ranks but does not go to all bytes,
	 *   Entry[i] defines which DQ bytes Group i services
	 * DQByteMap[1] - CmdNDQByteMap: [0] is CmdN/CAA and [1] is CmdN/CAB
	 * DQByteMap[2] - CmdSDQByteMap: [0] is CmdS/CAA and [1] is CmdS/CAB
	 * DQByteMap[3] - CkeDQByteMap : [0] is CKE /CAA and [1] is CKE /CAB
	 *                For DDR, DQByteMap[3:1] = [0xFF, 0]
	 * DQByteMap[4] - CtlDQByteMap : Always program to [0xFF, 0]
	 *                since we have 1 CTL / rank
	 * DQByteMap[5] - CmdVDQByteMap: Always program to [0xFF, 0]
	 *                since we have 1 CA Vref
	 */
	uint8_t dq_map[2][6][2];

	/*
	 * LPDDR3 Map from CPU DQS pins to SDRAM DQS pins
	 * [CHANNEL][MAX_BYTES]
	 */
	uint8_t dqs_map[2][8];

	/* Data read from flash and passed into MRC */
	const void *saved_data;
	int saved_data_size;

	/* Disable use of saved data (can be set by mainboard) */
	int disable_saved_data;

	/* Data from MRC that should be saved to flash */
	void *data_to_save;
	int data_to_save_size;
	struct pei_memory_info meminfo;
} __packed;

void mainboard_fill_pei_data(struct pei_data *pei_data);
void broadwell_fill_pei_data(struct pei_data *pei_data);

#endif