From 0b2e13d9ccbe56e32dc674cf896b2fb55684368c Mon Sep 17 00:00:00 2001 From: Chunhe Lan Date: Mon, 14 Apr 2014 18:42:06 +0800 Subject: powerpc/85xx: Add T4240RDB board support T4240RDB board Specification ---------------------------- Memory subsystem: 6GB DDR3 128MB NOR flash 2GB NAND flash Ethernet: Eight 1G SGMII ports Four 10Gbps SFP+ ports PCIe: Two PCIe slots USB: Two USB2.0 Type A ports SDHC: One SD-card port SATA: One SATA port UART: Dual RJ45 ports Signed-off-by: Chunhe Lan [York Sun: fix CONFIG_SYS_QE_FMAN_FW_ADDR in T4240RDB.h] --- board/freescale/t4rdb/ddr.c | 118 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 118 insertions(+) create mode 100644 board/freescale/t4rdb/ddr.c (limited to 'board/freescale/t4rdb/ddr.c') diff --git a/board/freescale/t4rdb/ddr.c b/board/freescale/t4rdb/ddr.c new file mode 100644 index 0000000..5a43c1b --- /dev/null +++ b/board/freescale/t4rdb/ddr.c @@ -0,0 +1,118 @@ +/* + * Copyright 2014 Freescale Semiconductor, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include +#include +#include "ddr.h" + +DECLARE_GLOBAL_DATA_PTR; + +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; + + /* + * we use identical timing for all slots. If needed, change the code + * to pbsp = rdimms[ctrl_num] or pbsp = udimms[ctrl_num]; + */ + if (popts->registered_dimm_en) + pbsp = rdimms[0]; + else + 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 && + (pdimm->rank_density >> 30) >= pbsp->rank_gb) { + if (ddr_freq <= pbsp->datarate_mhz_high) { + 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; + goto found; + } + pbsp_highest = pbsp; + } + pbsp++; + } + + if (pbsp_highest) { + printf("Error: board specific timing not found for data\n" + "rate %lu MT/s\n" + "Trying to use the highest speed (%u) parameters\n", + ddr_freq, pbsp_highest->datarate_mhz_high); + popts->clk_adjust = pbsp_highest->clk_adjust; + popts->wrlvl_start = pbsp_highest->wrlvl_start; + popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2; + popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3; + } else { + panic("DIMM is not supported by this board"); + } +found: + debug("Found timing match: n_ranks %d, data rate %d, rank_gb %d\n" + "\tclk_adjust %d, wrlvl_start %d, wrlvl_ctrl_2 0x%x,\n" + "wrlvl_ctrl_3 0x%x\n", + pbsp->n_ranks, pbsp->datarate_mhz_high, pbsp->rank_gb, + pbsp->clk_adjust, pbsp->wrlvl_start, pbsp->wrlvl_ctl_2, + pbsp->wrlvl_ctl_3); + + /* + * 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; + + puts("Initializing....using SPD\n"); + + dram_size = fsl_ddr_sdram(); + + dram_size = setup_ddr_tlbs(dram_size / 0x100000); + dram_size *= 0x100000; + + puts(" DDR: "); + return dram_size; +} -- cgit v1.1