u-boot/arch/x86/cpu/quark/mrc_util.h

/*
 * Copyright (C) 2013, Intel Corporation
 * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
 *
 * Ported from Intel released Quark UEFI BIOS
 * QuarkSocPkg/QuarkNorthCluster/MemoryInit/Pei
 *
 * SPDX-License-Identifier:	Intel
 */

#ifndef _MRC_UTIL_H_
#define _MRC_UTIL_H_

/* Turn on this macro to enable MRC debugging output */
#undef  MRC_DEBUG

/* MRC Debug Support */
#define DPF		debug_cond

/* debug print type */

#ifdef MRC_DEBUG
#define D_ERROR		0x0001
#define D_INFO		0x0002
#define D_REGRD		0x0004
#define D_REGWR		0x0008
#define D_FCALL		0x0010
#define D_TRN		0x0020
#define D_TIME		0x0040
#else
#define D_ERROR		0
#define D_INFO		0
#define D_REGRD		0
#define D_REGWR		0
#define D_FCALL		0
#define D_TRN		0
#define D_TIME		0
#endif

#define ENTERFN(...)	debug_cond(D_FCALL, "<%s>\n", __func__)
#define LEAVEFN(...)	debug_cond(D_FCALL, "</%s>\n", __func__)
#define REPORTFN(...)	debug_cond(D_FCALL, "<%s/>\n", __func__)

/* Message Bus Port */
#define MEM_CTLR	0x01
#define HOST_BRIDGE	0x03
#define MEM_MGR		0x05
#define HTE		0x11
#define DDRPHY		0x12

/* number of sample points */
#define SAMPLE_CNT	3
/* number of PIs to increment per sample */
#define SAMPLE_DLY	26

enum {
	/* indicates to decrease delays when looking for edge */
	BACKWARD,
	/* indicates to increase delays when looking for edge */
	FORWARD
};

enum {
	RCVN,
	WDQS,
	WDQX,
	RDQS,
	VREF,
	WCMD,
	WCTL,
	WCLK,
	MAX_ALGOS,
};

void mrc_write_mask(u32 unit, u32 addr, u32 data, u32 mask);
void mrc_alt_write_mask(u32 unit, u32 addr, u32 data, u32 mask);
void mrc_post_code(uint8_t major, uint8_t minor);
void delay_n(uint32_t ns);
void delay_u(uint32_t ms);
void select_mem_mgr(void);
void select_hte(void);
void dram_init_command(uint32_t data);
void dram_wake_command(void);
void training_message(uint8_t channel, uint8_t rank, uint8_t byte_lane);

void set_rcvn(uint8_t channel, uint8_t rank,
	      uint8_t byte_lane, uint32_t pi_count);
uint32_t get_rcvn(uint8_t channel, uint8_t rank, uint8_t byte_lane);
void set_rdqs(uint8_t channel, uint8_t rank,
	      uint8_t byte_lane, uint32_t pi_count);
uint32_t get_rdqs(uint8_t channel, uint8_t rank, uint8_t byte_lane);
void set_wdqs(uint8_t channel, uint8_t rank,
	      uint8_t byte_lane, uint32_t pi_count);
uint32_t get_wdqs(uint8_t channel, uint8_t rank, uint8_t byte_lane);
void set_wdq(uint8_t channel, uint8_t rank,
	     uint8_t byte_lane, uint32_t pi_count);
uint32_t get_wdq(uint8_t channel, uint8_t rank, uint8_t byte_lane);
void set_wcmd(uint8_t channel, uint32_t pi_count);
uint32_t get_wcmd(uint8_t channel);
void set_wclk(uint8_t channel, uint8_t rank, uint32_t pi_count);
uint32_t get_wclk(uint8_t channel, uint8_t rank);
void set_wctl(uint8_t channel, uint8_t rank, uint32_t pi_count);
uint32_t get_wctl(uint8_t channel, uint8_t rank);
void set_vref(uint8_t channel, uint8_t byte_lane, uint32_t setting);
uint32_t get_vref(uint8_t channel, uint8_t byte_lane);

uint32_t get_addr(uint8_t channel, uint8_t rank);
uint32_t sample_dqs(struct mrc_params *mrc_params, uint8_t channel,
		    uint8_t rank, bool rcvn);
void find_rising_edge(struct mrc_params *mrc_params, uint32_t delay[],
		      uint8_t channel, uint8_t rank, bool rcvn);
uint32_t byte_lane_mask(struct mrc_params *mrc_params);
uint32_t check_rw_coarse(struct mrc_params *mrc_params, uint32_t address);
uint32_t check_bls_ex(struct mrc_params *mrc_params, uint32_t address);
void lfsr32(uint32_t *lfsr_ptr);
void clear_pointers(void);
void print_timings(struct mrc_params *mrc_params);

#endif /* _MRC_UTIL_H_ */