diff options
Diffstat (limited to 'arch/ppc/cpu/mpc8xxx/ddr/options.c')
-rw-r--r-- | arch/ppc/cpu/mpc8xxx/ddr/options.c | 297 |
1 files changed, 0 insertions, 297 deletions
diff --git a/arch/ppc/cpu/mpc8xxx/ddr/options.c b/arch/ppc/cpu/mpc8xxx/ddr/options.c deleted file mode 100644 index 46731c8..0000000 --- a/arch/ppc/cpu/mpc8xxx/ddr/options.c +++ /dev/null @@ -1,297 +0,0 @@ -/* - * Copyright 2008, 2010 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 as published by the Free - * Software Foundation; either version 2 of the License, or (at your option) - * any later version. - */ - -#include <common.h> -#include <asm/fsl_ddr_sdram.h> - -#include "ddr.h" - -/* Board-specific functions defined in each board's ddr.c */ -extern void fsl_ddr_board_options(memctl_options_t *popts, - dimm_params_t *pdimm, - unsigned int ctrl_num); - -unsigned int populate_memctl_options(int all_DIMMs_registered, - memctl_options_t *popts, - dimm_params_t *pdimm, - unsigned int ctrl_num) -{ - unsigned int i; - const char *p; - - /* Chip select options. */ - - /* Pick chip-select local options. */ - for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { - /* If not DDR2, odt_rd_cfg and odt_wr_cfg need to be 0. */ - - /* only for single CS? */ - popts->cs_local_opts[i].odt_rd_cfg = 0; - - popts->cs_local_opts[i].odt_wr_cfg = 1; - popts->cs_local_opts[i].auto_precharge = 0; - } - - /* Pick interleaving mode. */ - - /* - * 0 = no interleaving - * 1 = interleaving between 2 controllers - */ - popts->memctl_interleaving = 0; - - /* - * 0 = cacheline - * 1 = page - * 2 = (logical) bank - * 3 = superbank (only if CS interleaving is enabled) - */ - popts->memctl_interleaving_mode = 0; - - /* - * 0: cacheline: bit 30 of the 36-bit physical addr selects the memctl - * 1: page: bit to the left of the column bits selects the memctl - * 2: bank: bit to the left of the bank bits selects the memctl - * 3: superbank: bit to the left of the chip select selects the memctl - * - * NOTE: ba_intlv (rank interleaving) is independent of memory - * controller interleaving; it is only within a memory controller. - * Must use superbank interleaving if rank interleaving is used and - * memory controller interleaving is enabled. - */ - - /* - * 0 = no - * 0x40 = CS0,CS1 - * 0x20 = CS2,CS3 - * 0x60 = CS0,CS1 + CS2,CS3 - * 0x04 = CS0,CS1,CS2,CS3 - */ - popts->ba_intlv_ctl = 0; - - /* Memory Organization Parameters */ - popts->registered_dimm_en = all_DIMMs_registered; - - /* Operational Mode Paramters */ - - /* Pick ECC modes */ -#ifdef CONFIG_DDR_ECC - popts->ECC_mode = 1; /* 0 = disabled, 1 = enabled */ -#else - popts->ECC_mode = 0; /* 0 = disabled, 1 = enabled */ -#endif - popts->ECC_init_using_memctl = 1; /* 0 = use DMA, 1 = use memctl */ - - /* - * Choose DQS config - * 0 for DDR1 - * 1 for DDR2 - */ -#if defined(CONFIG_FSL_DDR1) - popts->DQS_config = 0; -#elif defined(CONFIG_FSL_DDR2) || defined(CONFIG_FSL_DDR3) - popts->DQS_config = 1; -#endif - - /* Choose self-refresh during sleep. */ - popts->self_refresh_in_sleep = 1; - - /* Choose dynamic power management mode. */ - popts->dynamic_power = 0; - - /* 0 = 64-bit, 1 = 32-bit, 2 = 16-bit */ - popts->data_bus_width = 0; - - /* Choose burst length. */ -#if defined(CONFIG_FSL_DDR3) -#if defined(CONFIG_E500MC) - popts->OTF_burst_chop_en = 0; /* on-the-fly burst chop disable */ - popts->burst_length = DDR_BL8; /* Fixed 8-beat burst len */ -#else - popts->OTF_burst_chop_en = 1; /* on-the-fly burst chop */ - popts->burst_length = DDR_OTF; /* on-the-fly BC4 and BL8 */ -#endif -#else - popts->burst_length = DDR_BL4; /* has to be 4 for DDR2 */ -#endif - - /* Choose ddr controller address mirror mode */ -#if defined(CONFIG_FSL_DDR3) - popts->mirrored_dimm = pdimm[0].mirrored_dimm; -#endif - - /* Global Timing Parameters. */ - debug("mclk_ps = %u ps\n", get_memory_clk_period_ps()); - - /* Pick a caslat override. */ - popts->cas_latency_override = 0; - popts->cas_latency_override_value = 3; - if (popts->cas_latency_override) { - debug("using caslat override value = %u\n", - popts->cas_latency_override_value); - } - - /* Decide whether to use the computed derated latency */ - popts->use_derated_caslat = 0; - - /* Choose an additive latency. */ - popts->additive_latency_override = 0; - popts->additive_latency_override_value = 3; - if (popts->additive_latency_override) { - debug("using additive latency override value = %u\n", - popts->additive_latency_override_value); - } - - /* - * 2T_EN setting - * - * Factors to consider for 2T_EN: - * - number of DIMMs installed - * - number of components, number of active ranks - * - how much time you want to spend playing around - */ - popts->twoT_en = 0; - popts->threeT_en = 0; - - /* - * BSTTOPRE precharge interval - * - * Set this to 0 for global auto precharge - * - * FIXME: Should this be configured in picoseconds? - * Why it should be in ps: better understanding of this - * relative to actual DRAM timing parameters such as tRAS. - * e.g. tRAS(min) = 40 ns - */ - popts->bstopre = 0x100; - - /* Minimum CKE pulse width -- tCKE(MIN) */ - popts->tCKE_clock_pulse_width_ps - = mclk_to_picos(FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR); - - /* - * Window for four activates -- tFAW - * - * FIXME: UM: applies only to DDR2/DDR3 with eight logical banks only - * FIXME: varies depending upon number of column addresses or data - * FIXME: width, was considering looking at pdimm->primary_sdram_width - */ -#if defined(CONFIG_FSL_DDR1) - popts->tFAW_window_four_activates_ps = mclk_to_picos(1); - -#elif defined(CONFIG_FSL_DDR2) - /* - * x4/x8; some datasheets have 35000 - * x16 wide columns only? Use 50000? - */ - popts->tFAW_window_four_activates_ps = 37500; - -#elif defined(CONFIG_FSL_DDR3) - popts->tFAW_window_four_activates_ps = pdimm[0].tFAW_ps; -#endif - popts->zq_en = 0; - popts->wrlvl_en = 0; -#if defined(CONFIG_FSL_DDR3) - /* - * due to ddr3 dimm is fly-by topology - * we suggest to enable write leveling to - * meet the tQDSS under different loading. - */ - popts->wrlvl_en = 1; - popts->wrlvl_override = 0; -#endif - - /* - * Check interleaving configuration from environment. - * Please refer to doc/README.fsl-ddr for the detail. - * - * If memory controller interleaving is enabled, then the data - * bus widths must be programmed identically for the 2 memory - * controllers. - * - * XXX: Attempt to set both controllers to the same chip select - * interleaving mode. It will do a best effort to get the - * requested ranks interleaved together such that the result - * should be a subset of the requested configuration. - */ -#if (CONFIG_NUM_DDR_CONTROLLERS > 1) - if ((p = getenv("memctl_intlv_ctl")) != NULL) { - if (pdimm[0].n_ranks == 0) { - printf("There is no rank on CS0. Because only rank on " - "CS0 and ranks chip-select interleaved with CS0" - " are controller interleaved, force non memory " - "controller interleaving\n"); - popts->memctl_interleaving = 0; - } else { - popts->memctl_interleaving = 1; - if (strcmp(p, "cacheline") == 0) - popts->memctl_interleaving_mode = - FSL_DDR_CACHE_LINE_INTERLEAVING; - else if (strcmp(p, "page") == 0) - popts->memctl_interleaving_mode = - FSL_DDR_PAGE_INTERLEAVING; - else if (strcmp(p, "bank") == 0) - popts->memctl_interleaving_mode = - FSL_DDR_BANK_INTERLEAVING; - else if (strcmp(p, "superbank") == 0) - popts->memctl_interleaving_mode = - FSL_DDR_SUPERBANK_INTERLEAVING; - else - popts->memctl_interleaving_mode = - simple_strtoul(p, NULL, 0); - } - } -#endif - - if( ((p = getenv("ba_intlv_ctl")) != NULL) && - (CONFIG_CHIP_SELECTS_PER_CTRL > 1)) { - if (strcmp(p, "cs0_cs1") == 0) - popts->ba_intlv_ctl = FSL_DDR_CS0_CS1; - else if (strcmp(p, "cs2_cs3") == 0) - popts->ba_intlv_ctl = FSL_DDR_CS2_CS3; - else if (strcmp(p, "cs0_cs1_and_cs2_cs3") == 0) - popts->ba_intlv_ctl = FSL_DDR_CS0_CS1_AND_CS2_CS3; - else if (strcmp(p, "cs0_cs1_cs2_cs3") == 0) - popts->ba_intlv_ctl = FSL_DDR_CS0_CS1_CS2_CS3; - else - popts->ba_intlv_ctl = simple_strtoul(p, NULL, 0); - - switch (popts->ba_intlv_ctl & FSL_DDR_CS0_CS1_CS2_CS3) { - case FSL_DDR_CS0_CS1_CS2_CS3: - case FSL_DDR_CS0_CS1: - if (pdimm[0].n_ranks != 2) { - popts->ba_intlv_ctl = 0; - printf("Not enough bank(chip-select) for " - "CS0+CS1, force non-interleaving!\n"); - } - break; - case FSL_DDR_CS2_CS3: - if (pdimm[1].n_ranks !=2){ - popts->ba_intlv_ctl = 0; - printf("Not enough bank(CS) for CS2+CS3, " - "force non-interleaving!\n"); - } - break; - case FSL_DDR_CS0_CS1_AND_CS2_CS3: - if ((pdimm[0].n_ranks != 2)||(pdimm[1].n_ranks != 2)) { - popts->ba_intlv_ctl = 0; - printf("Not enough bank(CS) for CS0+CS1 or " - "CS2+CS3, force non-interleaving!\n"); - } - break; - default: - popts->ba_intlv_ctl = 0; - break; - } - } - - fsl_ddr_board_options(popts, pdimm, ctrl_num); - - return 0; -} |