board/freescale/b4860qds/ddr.c - u-boot - Git at Google

 /*
  * Copyright 2011-2012 Freescale Semiconductor, Inc.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * Version 2 or later as published by the Free Software Foundation.
  */

 #include <common.h>
 #include <i2c.h>
 #include <hwconfig.h>
 #include <fsl_ddr.h>
 #include <asm/mmu.h>
 #include <fsl_ddr_sdram.h>
 #include <fsl_ddr_dimm_params.h>
 #include <asm/fsl_law.h>

 DECLARE_GLOBAL_DATA_PTR;

 dimm_params_t ddr_raw_timing = {
 	.n_ranks = 2,
 	.rank_density = 2147483648u,
 	.capacity = 4294967296u,
 	.primary_sdram_width = 64,
 	.ec_sdram_width = 8,
 	.registered_dimm = 0,
 	.mirrored_dimm = 1,
 	.n_row_addr = 15,
 	.n_col_addr = 10,
 	.n_banks_per_sdram_device = 8,
 	.edc_config = 2,	/* ECC */
 	.burst_lengths_bitmask = 0x0c,

 	.tckmin_x_ps = 1071,
 	.caslat_x = 0x2fe << 4,	/* 5,6,7,8,9,10,11,13 */
 	.taa_ps = 13910,
 	.twr_ps = 15000,
 	.trcd_ps = 13910,
 	.trrd_ps = 6000,
 	.trp_ps = 13910,
 	.tras_ps = 34000,
 	.trc_ps = 48910,
 	.trfc_ps = 260000,
 	.twtr_ps = 7500,
 	.trtp_ps = 7500,
 	.refresh_rate_ps = 7800000,
 	.tfaw_ps = 35000,
 };

 int fsl_ddr_get_dimm_params(dimm_params_t *pdimm,
 		unsigned int controller_number,
 		unsigned int dimm_number)
 {
 	const char dimm_model[] = "RAW timing DDR";

 	if ((controller_number == 0) && (dimm_number == 0)) {
 		memcpy(pdimm, &ddr_raw_timing, sizeof(dimm_params_t));
 		memset(pdimm->mpart, 0, sizeof(pdimm->mpart));
 		memcpy(pdimm->mpart, dimm_model, sizeof(dimm_model) - 1);
 	}

 	return 0;
 }

 struct board_specific_parameters {
 	u32 n_ranks;
 	u32 datarate_mhz_high;
 	u32 clk_adjust;
 	u32 wrlvl_start;
 	u32 wrlvl_ctl_2;
 	u32 wrlvl_ctl_3;
 	u32 cpo;
 	u32 write_data_delay;
 	u32 force_2t;
 };

 /*
  * This table contains all valid speeds we want to override with board
  * specific parameters. datarate_mhz_high values need to be in ascending order
  * for each n_ranks group.
  */
 static const struct board_specific_parameters udimm0[] = {
 	/*
 	 * memory controller 0
 	 *   num|  hi|  clk| wrlvl |   wrlvl   |  wrlvl | cpo  |wrdata|2T
 	 * ranks| mhz|adjst| start |   ctl2    |  ctl3  |      |delay |
 	 */
 	{2,  1350,    4,     7, 0x09080807, 0x07060607,   0xff,    2,  0},
 	{2,  1666,    4,     7, 0x09080806, 0x06050607,   0xff,    2,  0},
 	{2,  1900,    3,     7, 0x08070706, 0x06040507,   0xff,    2,  0},
 	{1,  1350,    4,     7, 0x09080807, 0x07060607,   0xff,    2,  0},
 	{1,  1700,    4,     7, 0x09080806, 0x06050607,   0xff,    2,  0},
 	{1,  1900,    3,     7, 0x08070706, 0x06040507,   0xff,    2,  0},
 	{}
 };

 static const struct board_specific_parameters *udimms[] = {
 	udimm0,
 };

 void fsl_ddr_board_options(memctl_options_t *popts,
 				dimm_params_t *pdimm,
 				unsigned int ctrl_num)
 {
 	const struct board_specific_parameters *pbsp, *pbsp_highest = NULL;
 	ulong ddr_freq;

 	if (ctrl_num > 2) {
 		printf("Not supported controller number %d\n", ctrl_num);
 		return;
 	}
 	if (!pdimm->n_ranks)
 		return;

 	pbsp = udimms[0];


 	/* Get clk_adjust, cpo, write_data_delay,2T, according to the board ddr
 	 * freqency and n_banks specified in board_specific_parameters table.
 	 */
 	ddr_freq = get_ddr_freq(0) / 1000000;
 	while (pbsp->datarate_mhz_high) {
 		if (pbsp->n_ranks == pdimm->n_ranks) {
 			if (ddr_freq <= pbsp->datarate_mhz_high) {
 				popts->cpo_override = pbsp->cpo;
 				popts->write_data_delay =
 					pbsp->write_data_delay;
 				popts->clk_adjust = pbsp->clk_adjust;
 				popts->wrlvl_start = pbsp->wrlvl_start;
 				popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2;
 				popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3;
 				popts->twot_en = pbsp->force_2t;
 				goto found;
 			}
 			pbsp_highest = pbsp;
 		}
 		pbsp++;
 	}

 	if (pbsp_highest) {
 		printf("Error: board specific timing not found "
 			"for data rate %lu MT/s\n"
 			"Trying to use the highest speed (%u) parameters\n",
 			ddr_freq, pbsp_highest->datarate_mhz_high);
 		popts->cpo_override = pbsp_highest->cpo;
 		popts->write_data_delay = pbsp_highest->write_data_delay;
 		popts->clk_adjust = pbsp_highest->clk_adjust;
 		popts->wrlvl_start = pbsp_highest->wrlvl_start;
 		popts->twot_en = pbsp_highest->force_2t;
 	} else {
 		panic("DIMM is not supported by this board");
 	}
 found:
 	/*
 	 * Factors to consider for half-strength driver enable:
 	 *	- number of DIMMs installed
 	 */
 	popts->half_strength_driver_enable = 0;
 	/*
 	 * Write leveling override
 	 */
 	popts->wrlvl_override = 1;
 	popts->wrlvl_sample = 0xf;

 	/*
 	 * Rtt and Rtt_WR override
 	 */
 	popts->rtt_override = 0;

 	/* Enable ZQ calibration */
 	popts->zq_en = 1;

 	/* DHC_EN =1, ODT = 75 Ohm */
 	popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_75ohm);
 	popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_75ohm);
 }

 phys_size_t initdram(int board_type)
 {
 	phys_size_t dram_size;

 #if defined(CONFIG_SPL_BUILD) || !defined(CONFIG_RAMBOOT_PBL)
 	puts("Initializing....using SPD\n");

 	dram_size = fsl_ddr_sdram();

 	dram_size = setup_ddr_tlbs(dram_size / 0x100000);
 	dram_size *= 0x100000;

 #else
 	dram_size =  fsl_ddr_sdram_size();
 #endif
 	return dram_size;
 }

 unsigned long long step_assign_addresses(fsl_ddr_info_t *pinfo,
 			  unsigned int dbw_cap_adj[])
 {
 	int i, j;
 	unsigned long long total_mem, current_mem_base, total_ctlr_mem;
 	unsigned long long rank_density, ctlr_density = 0;

 	current_mem_base = 0ull;
 	total_mem = 0;
 	/*
 	 * This board has soldered DDR chips. DDRC1 has two rank.
 	 * DDRC2 has only one rank.
 	 * Assigning DDRC2 to lower address and DDRC1 to higher address.
 	 */
 	if (pinfo->memctl_opts[0].memctl_interleaving) {
 		rank_density = pinfo->dimm_params[0][0].rank_density >>
 					dbw_cap_adj[0];
 		ctlr_density = rank_density;

 		debug("rank density is 0x%llx, ctlr density is 0x%llx\n",
 		      rank_density, ctlr_density);
 		for (i = CONFIG_NUM_DDR_CONTROLLERS - 1; i >= 0; i--) {
 			switch (pinfo->memctl_opts[i].memctl_interleaving_mode) {
 			case FSL_DDR_CACHE_LINE_INTERLEAVING:
 			case FSL_DDR_PAGE_INTERLEAVING:
 			case FSL_DDR_BANK_INTERLEAVING:
 			case FSL_DDR_SUPERBANK_INTERLEAVING:
 				total_ctlr_mem = 2 * ctlr_density;
 				break;
 			default:
 				panic("Unknown interleaving mode");
 			}
 			pinfo->common_timing_params[i].base_address =
 						current_mem_base;
 			pinfo->common_timing_params[i].total_mem =
 						total_ctlr_mem;
 			total_mem = current_mem_base + total_ctlr_mem;
 			debug("ctrl %d base 0x%llx\n", i, current_mem_base);
 			debug("ctrl %d total 0x%llx\n", i, total_ctlr_mem);
 		}
 	} else {
 		/*
 		 * Simple linear assignment if memory
 		 * controllers are not interleaved.
 		 */
 		for (i = CONFIG_NUM_DDR_CONTROLLERS - 1; i >= 0; i--) {
 			total_ctlr_mem = 0;
 			pinfo->common_timing_params[i].base_address =
 						current_mem_base;
 			for (j = 0; j < CONFIG_DIMM_SLOTS_PER_CTLR; j++) {
 				/* Compute DIMM base addresses. */
 				unsigned long long cap =
 					pinfo->dimm_params[i][j].capacity;
 				pinfo->dimm_params[i][j].base_address =
 					current_mem_base;
 				debug("ctrl %d dimm %d base 0x%llx\n",
 				      i, j, current_mem_base);
 				current_mem_base += cap;
 				total_ctlr_mem += cap;
 			}
 			debug("ctrl %d total 0x%llx\n", i, total_ctlr_mem);
 			pinfo->common_timing_params[i].total_mem =
 							total_ctlr_mem;
 			total_mem += total_ctlr_mem;
 		}
 	}
 	debug("Total mem by %s is 0x%llx\n", __func__, total_mem);

 	return total_mem;
 }
	/*
	* Copyright 2011-2012 Freescale Semiconductor, Inc.
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public License
	* Version 2 or later as published by the Free Software Foundation.
	*/

	#include <common.h>
	#include <i2c.h>
	#include <hwconfig.h>
	#include <fsl_ddr.h>
	#include <asm/mmu.h>
	#include <fsl_ddr_sdram.h>
	#include <fsl_ddr_dimm_params.h>
	#include <asm/fsl_law.h>

	DECLARE_GLOBAL_DATA_PTR;

	dimm_params_t ddr_raw_timing = {
	.n_ranks = 2,
	.rank_density = 2147483648u,
	.capacity = 4294967296u,
	.primary_sdram_width = 64,
	.ec_sdram_width = 8,
	.registered_dimm = 0,
	.mirrored_dimm = 1,
	.n_row_addr = 15,
	.n_col_addr = 10,
	.n_banks_per_sdram_device = 8,
	.edc_config = 2, /* ECC */
	.burst_lengths_bitmask = 0x0c,

	.tckmin_x_ps = 1071,
	.caslat_x = 0x2fe << 4, /* 5,6,7,8,9,10,11,13 */
	.taa_ps = 13910,
	.twr_ps = 15000,
	.trcd_ps = 13910,
	.trrd_ps = 6000,
	.trp_ps = 13910,
	.tras_ps = 34000,
	.trc_ps = 48910,
	.trfc_ps = 260000,
	.twtr_ps = 7500,
	.trtp_ps = 7500,
	.refresh_rate_ps = 7800000,
	.tfaw_ps = 35000,
	};

	int fsl_ddr_get_dimm_params(dimm_params_t *pdimm,
	unsigned int controller_number,
	unsigned int dimm_number)
	{
	const char dimm_model[] = "RAW timing DDR";

	if ((controller_number == 0) && (dimm_number == 0)) {
	memcpy(pdimm, &ddr_raw_timing, sizeof(dimm_params_t));
	memset(pdimm->mpart, 0, sizeof(pdimm->mpart));
	memcpy(pdimm->mpart, dimm_model, sizeof(dimm_model) - 1);
	}

	return 0;
	}

	struct board_specific_parameters {
	u32 n_ranks;
	u32 datarate_mhz_high;
	u32 clk_adjust;
	u32 wrlvl_start;
	u32 wrlvl_ctl_2;
	u32 wrlvl_ctl_3;
	u32 cpo;
	u32 write_data_delay;
	u32 force_2t;
	};

	/*
	* This table contains all valid speeds we want to override with board
	* specific parameters. datarate_mhz_high values need to be in ascending order
	* for each n_ranks group.
	*/
	static const struct board_specific_parameters udimm0[] = {
	/*
	* memory controller 0
	* num\| hi\| clk\| wrlvl \| wrlvl \| wrlvl \| cpo \|wrdata\|2T
	* ranks\| mhz\|adjst\| start \| ctl2 \| ctl3 \| \|delay \|
	*/
	{2, 1350, 4, 7, 0x09080807, 0x07060607, 0xff, 2, 0},
	{2, 1666, 4, 7, 0x09080806, 0x06050607, 0xff, 2, 0},
	{2, 1900, 3, 7, 0x08070706, 0x06040507, 0xff, 2, 0},
	{1, 1350, 4, 7, 0x09080807, 0x07060607, 0xff, 2, 0},
	{1, 1700, 4, 7, 0x09080806, 0x06050607, 0xff, 2, 0},
	{1, 1900, 3, 7, 0x08070706, 0x06040507, 0xff, 2, 0},
	{}
	};

	static const struct board_specific_parameters *udimms[] = {
	udimm0,
	};

	void fsl_ddr_board_options(memctl_options_t *popts,
	dimm_params_t *pdimm,
	unsigned int ctrl_num)
	{
	const struct board_specific_parameters pbsp, pbsp_highest = NULL;
	ulong ddr_freq;

	if (ctrl_num > 2) {
	printf("Not supported controller number %d\n", ctrl_num);
	return;
	}
	if (!pdimm->n_ranks)
	return;

	pbsp = udimms[0];


	/* Get clk_adjust, cpo, write_data_delay,2T, according to the board ddr
	* freqency and n_banks specified in board_specific_parameters table.
	*/
	ddr_freq = get_ddr_freq(0) / 1000000;
	while (pbsp->datarate_mhz_high) {
	if (pbsp->n_ranks == pdimm->n_ranks) {
	if (ddr_freq <= pbsp->datarate_mhz_high) {
	popts->cpo_override = pbsp->cpo;
	popts->write_data_delay =
	pbsp->write_data_delay;
	popts->clk_adjust = pbsp->clk_adjust;
	popts->wrlvl_start = pbsp->wrlvl_start;
	popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2;
	popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3;
	popts->twot_en = pbsp->force_2t;
	goto found;
	}
	pbsp_highest = pbsp;
	}
	pbsp++;
	}

	if (pbsp_highest) {
	printf("Error: board specific timing not found "
	"for data rate %lu MT/s\n"
	"Trying to use the highest speed (%u) parameters\n",
	ddr_freq, pbsp_highest->datarate_mhz_high);
	popts->cpo_override = pbsp_highest->cpo;
	popts->write_data_delay = pbsp_highest->write_data_delay;
	popts->clk_adjust = pbsp_highest->clk_adjust;
	popts->wrlvl_start = pbsp_highest->wrlvl_start;
	popts->twot_en = pbsp_highest->force_2t;
	} else {
	panic("DIMM is not supported by this board");
	}
	found:
	/*
	* Factors to consider for half-strength driver enable:
	* - number of DIMMs installed
	*/
	popts->half_strength_driver_enable = 0;
	/*
	* Write leveling override
	*/
	popts->wrlvl_override = 1;
	popts->wrlvl_sample = 0xf;

	/*
	* Rtt and Rtt_WR override
	*/
	popts->rtt_override = 0;

	/* Enable ZQ calibration */
	popts->zq_en = 1;

	/* DHC_EN =1, ODT = 75 Ohm */
	popts->ddr_cdr1 = DDR_CDR1_DHC_EN \| DDR_CDR1_ODT(DDR_CDR_ODT_75ohm);
	popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_75ohm);
	}

	phys_size_t initdram(int board_type)
	{
	phys_size_t dram_size;

	#if defined(CONFIG_SPL_BUILD) \|\| !defined(CONFIG_RAMBOOT_PBL)
	puts("Initializing....using SPD\n");

	dram_size = fsl_ddr_sdram();

	dram_size = setup_ddr_tlbs(dram_size / 0x100000);
	dram_size *= 0x100000;

	#else
	dram_size = fsl_ddr_sdram_size();
	#endif
	return dram_size;
	}

	unsigned long long step_assign_addresses(fsl_ddr_info_t *pinfo,
	unsigned int dbw_cap_adj[])
	{
	int i, j;
	unsigned long long total_mem, current_mem_base, total_ctlr_mem;
	unsigned long long rank_density, ctlr_density = 0;

	current_mem_base = 0ull;
	total_mem = 0;
	/*
	* This board has soldered DDR chips. DDRC1 has two rank.
	* DDRC2 has only one rank.
	* Assigning DDRC2 to lower address and DDRC1 to higher address.
	*/
	if (pinfo->memctl_opts[0].memctl_interleaving) {
	rank_density = pinfo->dimm_params[0][0].rank_density >>
	dbw_cap_adj[0];
	ctlr_density = rank_density;

	debug("rank density is 0x%llx, ctlr density is 0x%llx\n",
	rank_density, ctlr_density);
	for (i = CONFIG_NUM_DDR_CONTROLLERS - 1; i >= 0; i--) {
	switch (pinfo->memctl_opts[i].memctl_interleaving_mode) {
	case FSL_DDR_CACHE_LINE_INTERLEAVING:
	case FSL_DDR_PAGE_INTERLEAVING:
	case FSL_DDR_BANK_INTERLEAVING:
	case FSL_DDR_SUPERBANK_INTERLEAVING:
	total_ctlr_mem = 2 * ctlr_density;
	break;
	default:
	panic("Unknown interleaving mode");
	}
	pinfo->common_timing_params[i].base_address =
	current_mem_base;
	pinfo->common_timing_params[i].total_mem =
	total_ctlr_mem;
	total_mem = current_mem_base + total_ctlr_mem;
	debug("ctrl %d base 0x%llx\n", i, current_mem_base);
	debug("ctrl %d total 0x%llx\n", i, total_ctlr_mem);
	}
	} else {
	/*
	* Simple linear assignment if memory
	* controllers are not interleaved.
	*/
	for (i = CONFIG_NUM_DDR_CONTROLLERS - 1; i >= 0; i--) {
	total_ctlr_mem = 0;
	pinfo->common_timing_params[i].base_address =
	current_mem_base;
	for (j = 0; j < CONFIG_DIMM_SLOTS_PER_CTLR; j++) {
	/* Compute DIMM base addresses. */
	unsigned long long cap =
	pinfo->dimm_params[i][j].capacity;
	pinfo->dimm_params[i][j].base_address =
	current_mem_base;
	debug("ctrl %d dimm %d base 0x%llx\n",
	i, j, current_mem_base);
	current_mem_base += cap;
	total_ctlr_mem += cap;
	}
	debug("ctrl %d total 0x%llx\n", i, total_ctlr_mem);
	pinfo->common_timing_params[i].total_mem =
	total_ctlr_mem;
	total_mem += total_ctlr_mem;
	}
	}
	debug("Total mem by %s is 0x%llx\n", __func__, total_mem);

	return total_mem;
	}