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Diffstat (limited to 'board/varisys/cyrus/ddr.c')
| -rw-r--r-- | board/varisys/cyrus/ddr.c | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/board/varisys/cyrus/ddr.c b/board/varisys/cyrus/ddr.c deleted file mode 100644 index 184948094d..0000000000 --- a/board/varisys/cyrus/ddr.c +++ /dev/null @@ -1,192 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Based on corenet_ds ddr code - */ - -#include <common.h> -#include <i2c.h> -#include <hwconfig.h> -#include <init.h> -#include <log.h> -#include <asm/global_data.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; - - -struct board_specific_parameters { - u32 n_ranks; - u32 datarate_mhz_high; - u32 clk_adjust; - u32 wrlvl_start; - 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 | cpo |wrdata|2T - * ranks| mhz|adjst| start | |delay | - */ - {4, 850, 4, 6, 0xff, 2, 0}, - {4, 950, 5, 7, 0xff, 2, 0}, - {4, 1050, 5, 8, 0xff, 2, 0}, - {4, 1250, 5, 10, 0xff, 2, 0}, - {4, 1350, 5, 11, 0xff, 2, 0}, - {4, 1666, 5, 12, 0xff, 2, 0}, - {2, 850, 5, 6, 0xff, 2, 0}, - {2, 1050, 5, 7, 0xff, 2, 0}, - {2, 1250, 4, 6, 0xff, 2, 0}, - {2, 1350, 5, 7, 0xff, 2, 0}, - {2, 1666, 5, 8, 0xff, 2, 0}, - {1, 1250, 4, 6, 0xff, 2, 0}, - {1, 1335, 4, 7, 0xff, 2, 0}, - {1, 1666, 4, 8, 0xff, 2, 0}, - {} -}; - -/* - * The two slots have slightly different timing. The center values are good - * for both slots. We use identical speed tables for them. In future use, if - * DIMMs have fewer center values that require two separated tables, copy the - * udimm0 table to udimm1 and make changes to clk_adjust and wrlvl_start. - */ -static const struct board_specific_parameters *udimms[] = { - udimm0, - udimm0, -}; - -static const struct board_specific_parameters rdimm0[] = { - /* - * memory controller 0 - * num| hi| clk| wrlvl | cpo |wrdata|2T - * ranks| mhz|adjst| start | |delay | - */ - {4, 850, 4, 6, 0xff, 2, 0}, - {4, 950, 5, 7, 0xff, 2, 0}, - {4, 1050, 5, 8, 0xff, 2, 0}, - {4, 1250, 5, 10, 0xff, 2, 0}, - {4, 1350, 5, 11, 0xff, 2, 0}, - {4, 1666, 5, 12, 0xff, 2, 0}, - {2, 850, 4, 6, 0xff, 2, 0}, - {2, 1050, 4, 7, 0xff, 2, 0}, - {2, 1666, 4, 8, 0xff, 2, 0}, - {1, 850, 4, 5, 0xff, 2, 0}, - {1, 950, 4, 7, 0xff, 2, 0}, - {1, 1666, 4, 8, 0xff, 2, 0}, - {} -}; - -/* - * The two slots have slightly different timing. See comments above. - */ -static const struct board_specific_parameters *rdimms[] = { - rdimm0, - rdimm0, -}; - -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 > 1) { - printf("Wrong parameter for controller number %d", ctrl_num); - return; - } - if (!pdimm->n_ranks) - return; - - if (popts->registered_dimm_en) - pbsp = rdimms[ctrl_num]; - else - pbsp = udimms[ctrl_num]; - - - /* 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->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!\nTrying 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 = 60 Ohm */ - popts->ddr_cdr1 = DDR_CDR1_DHC_EN; -} - -int dram_init(void) -{ - phys_size_t dram_size; - - puts("Initializing...."); - - if (!fsl_use_spd()) - panic("Cyrus only supports using SPD for DRAM\n"); - - puts("using SPD\n"); - dram_size = fsl_ddr_sdram(); - - dram_size = setup_ddr_tlbs(dram_size / 0x100000); - dram_size *= 0x100000; - - debug(" DDR: "); - gd->ram_size = dram_size; - - return 0; -} |