diff options
Diffstat (limited to 'qemu/roms/u-boot/board/freescale/t4qds/ddr.c')
-rw-r--r-- | qemu/roms/u-boot/board/freescale/t4qds/ddr.c | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/qemu/roms/u-boot/board/freescale/t4qds/ddr.c b/qemu/roms/u-boot/board/freescale/t4qds/ddr.c deleted file mode 100644 index 7abd38def..000000000 --- a/qemu/roms/u-boot/board/freescale/t4qds/ddr.c +++ /dev/null @@ -1,131 +0,0 @@ -/* - * Copyright 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 <asm/mmu.h> -#include <fsl_ddr_sdram.h> -#include <fsl_ddr_dimm_params.h> -#include <asm/fsl_law.h> -#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->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->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2; - popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3; - popts->twot_en = pbsp_highest->force_2t; - } 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, " - "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"); - -#if defined(CONFIG_SPL_BUILD) || !defined(CONFIG_RAMBOOT_PBL) - dram_size = fsl_ddr_sdram(); - - dram_size = setup_ddr_tlbs(dram_size / 0x100000); - dram_size *= 0x100000; - -#else - /* DDR has been initialised by first stage boot loader */ - dram_size = fsl_ddr_sdram_size(); -#endif - return dram_size; -} |