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https://github.com/AsahiLinux/u-boot
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65cc0e2a65
The rest of the unmigrated CONFIG symbols in the CONFIG_SYS namespace do not easily transition to Kconfig. In many cases they likely should come from the device tree instead. Move these out of CONFIG namespace and in to CFG namespace. Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
258 lines
6.4 KiB
C
258 lines
6.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2014 Freescale Semiconductor, Inc.
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*/
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#include <common.h>
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#include <i2c.h>
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#include <hwconfig.h>
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#include <init.h>
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#include <log.h>
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#include <asm/global_data.h>
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#include <asm/mmu.h>
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#include <fsl_ddr_sdram.h>
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#include <fsl_ddr_dimm_params.h>
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#include <asm/fsl_law.h>
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#include <asm/mpc85xx_gpio.h>
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#include <linux/delay.h>
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DECLARE_GLOBAL_DATA_PTR;
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struct board_specific_parameters {
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u32 n_ranks;
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u32 datarate_mhz_high;
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u32 rank_gb;
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u32 clk_adjust;
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u32 wrlvl_start;
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u32 wrlvl_ctl_2;
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u32 wrlvl_ctl_3;
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};
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/*
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* datarate_mhz_high values need to be in ascending order
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*/
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static const struct board_specific_parameters udimm0[] = {
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/*
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* memory controller 0
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* num| hi| rank| clk| wrlvl | wrlvl | wrlvl |
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* ranks| mhz| GB |adjst| start | ctl2 | ctl3 |
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*/
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{2, 833, 0, 8, 6, 0x06060607, 0x08080807,},
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{2, 1350, 0, 8, 7, 0x0708080A, 0x0A0B0C09,},
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{2, 1666, 0, 8, 7, 0x0808090B, 0x0C0D0E0A,},
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{1, 833, 0, 8, 6, 0x06060607, 0x08080807,},
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{1, 1350, 0, 8, 7, 0x0708080A, 0x0A0B0C09,},
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{1, 1666, 0, 8, 7, 0x0808090B, 0x0C0D0E0A,},
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{}
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};
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static const struct board_specific_parameters *udimms[] = {
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udimm0,
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};
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void fsl_ddr_board_options(memctl_options_t *popts,
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dimm_params_t *pdimm,
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unsigned int ctrl_num)
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{
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const struct board_specific_parameters *pbsp, *pbsp_highest = NULL;
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ulong ddr_freq;
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struct cpu_type *cpu = gd->arch.cpu;
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if (ctrl_num > 1) {
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printf("Not supported controller number %d\n", ctrl_num);
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return;
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}
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if (!pdimm->n_ranks)
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return;
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pbsp = udimms[0];
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/* Get clk_adjust according to the board ddr freqency and n_banks
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* specified in board_specific_parameters table.
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*/
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ddr_freq = get_ddr_freq(0) / 1000000;
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while (pbsp->datarate_mhz_high) {
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if (pbsp->n_ranks == pdimm->n_ranks &&
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(pdimm->rank_density >> 30) >= pbsp->rank_gb) {
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if (ddr_freq <= pbsp->datarate_mhz_high) {
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popts->clk_adjust = pbsp->clk_adjust;
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popts->wrlvl_start = pbsp->wrlvl_start;
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popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2;
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popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3;
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goto found;
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}
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pbsp_highest = pbsp;
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}
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pbsp++;
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}
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if (pbsp_highest) {
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printf("Error: board specific timing not found\n");
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printf("for data rate %lu MT/s\n", ddr_freq);
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printf("Trying to use the highest speed (%u) parameters\n",
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pbsp_highest->datarate_mhz_high);
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popts->clk_adjust = pbsp_highest->clk_adjust;
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popts->wrlvl_start = pbsp_highest->wrlvl_start;
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popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2;
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popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3;
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} else {
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panic("DIMM is not supported by this board");
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}
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found:
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debug("Found timing match: n_ranks %d, data rate %d, rank_gb %d\n",
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pbsp->n_ranks, pbsp->datarate_mhz_high, pbsp->rank_gb);
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debug("\tclk_adjust %d, wrlvl_start %d, wrlvl_ctrl_2 0x%x, ",
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pbsp->clk_adjust, pbsp->wrlvl_start, pbsp->wrlvl_ctl_2);
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debug("wrlvl_ctrl_3 0x%x\n", pbsp->wrlvl_ctl_3);
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/*
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* Factors to consider for half-strength driver enable:
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* - number of DIMMs installed
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*/
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popts->half_strength_driver_enable = 0;
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/*
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* Write leveling override
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*/
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popts->wrlvl_override = 1;
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popts->wrlvl_sample = 0xf;
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/*
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* rtt and rtt_wr override
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*/
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popts->rtt_override = 0;
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/* Enable ZQ calibration */
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popts->zq_en = 1;
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/* DHC_EN =1, ODT = 75 Ohm */
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popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_OFF);
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popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_OFF);
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/* T1023 supports max DDR bus 32bit width, T1024 supports DDR 64bit,
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* force DDR bus width to 32bit for T1023
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*/
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if (cpu->soc_ver == SVR_T1023)
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popts->data_bus_width = DDR_DATA_BUS_WIDTH_32;
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#ifdef CONFIG_FORCE_DDR_DATA_BUS_WIDTH_32
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/* for DDR bus 32bit test on T1024 */
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popts->data_bus_width = DDR_DATA_BUS_WIDTH_32;
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#endif
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#ifdef CONFIG_TARGET_T1023RDB
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popts->wrlvl_ctl_2 = 0x07070606;
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popts->half_strength_driver_enable = 1;
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popts->cpo_sample = 0x43;
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#elif defined(CONFIG_TARGET_T1024RDB)
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/* optimize cpo for erratum A-009942 */
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popts->cpo_sample = 0x52;
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#endif
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}
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#ifdef CONFIG_SYS_DDR_RAW_TIMING
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/* 2GB discrete DDR4 MT40A512M8HX on T1023RDB */
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dimm_params_t ddr_raw_timing = {
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.n_ranks = 1,
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.rank_density = 0x80000000,
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.capacity = 0x80000000,
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.primary_sdram_width = 32,
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.ec_sdram_width = 8,
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.registered_dimm = 0,
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.mirrored_dimm = 0,
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.n_row_addr = 15,
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.n_col_addr = 10,
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.bank_addr_bits = 2,
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.bank_group_bits = 2,
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.edc_config = 0,
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.burst_lengths_bitmask = 0x0c,
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.tckmin_x_ps = 938,
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.tckmax_ps = 1500,
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.caslat_x = 0x000DFA00,
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.taa_ps = 13500,
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.trcd_ps = 13500,
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.trp_ps = 13500,
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.tras_ps = 33000,
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.trc_ps = 46500,
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.trfc1_ps = 260000,
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.trfc2_ps = 160000,
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.trfc4_ps = 110000,
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.tfaw_ps = 25000,
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.trrds_ps = 3700,
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.trrdl_ps = 5300,
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.tccdl_ps = 5355,
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.refresh_rate_ps = 7800000,
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.dq_mapping[0] = 0x0,
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.dq_mapping[1] = 0x0,
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.dq_mapping[2] = 0x0,
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.dq_mapping[3] = 0x0,
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.dq_mapping[4] = 0x0,
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.dq_mapping[5] = 0x0,
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.dq_mapping[6] = 0x0,
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.dq_mapping[7] = 0x0,
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.dq_mapping[8] = 0x0,
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.dq_mapping[9] = 0x0,
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.dq_mapping[10] = 0x0,
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.dq_mapping[11] = 0x0,
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.dq_mapping[12] = 0x0,
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.dq_mapping[13] = 0x0,
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.dq_mapping[14] = 0x0,
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.dq_mapping[15] = 0x0,
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.dq_mapping[16] = 0x0,
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.dq_mapping[17] = 0x0,
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.dq_mapping_ors = 1,
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};
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int fsl_ddr_get_dimm_params(dimm_params_t *pdimm,
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unsigned int controller_number,
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unsigned int dimm_number)
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{
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const char dimm_model[] = "Fixed DDR4 on board";
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if (((controller_number == 0) && (dimm_number == 0)) ||
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((controller_number == 1) && (dimm_number == 0))) {
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memcpy(pdimm, &ddr_raw_timing, sizeof(dimm_params_t));
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memset(pdimm->mpart, 0, sizeof(pdimm->mpart));
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memcpy(pdimm->mpart, dimm_model, sizeof(dimm_model) - 1);
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}
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return 0;
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}
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#endif
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#if defined(CONFIG_DEEP_SLEEP)
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void board_mem_sleep_setup(void)
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{
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void __iomem *cpld_base = (void *)CFG_SYS_CPLD_BASE;
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/* does not provide HW signals for power management */
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clrbits_8(cpld_base + 0x17, 0x40);
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/* Disable MCKE isolation */
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gpio_set_value(2, 0);
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udelay(1);
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}
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#endif
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int dram_init(void)
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{
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phys_size_t dram_size;
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#if defined(CONFIG_SPL_BUILD) || !defined(CONFIG_RAMBOOT_PBL)
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#ifndef CONFIG_SYS_DDR_RAW_TIMING
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puts("Initializing....using SPD\n");
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#endif
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dram_size = fsl_ddr_sdram();
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#else
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/* DDR has been initialised by first stage boot loader */
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dram_size = fsl_ddr_sdram_size();
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#endif
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dram_size = setup_ddr_tlbs(dram_size / 0x100000);
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dram_size *= 0x100000;
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#if defined(CONFIG_DEEP_SLEEP) && !defined(CONFIG_SPL_BUILD)
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fsl_dp_resume();
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#endif
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gd->ram_size = dram_size;
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return 0;
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}
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