diff options
Diffstat (limited to 'drivers/ddr/fsl/options.c')
| -rw-r--r-- | drivers/ddr/fsl/options.c | 142 |
1 files changed, 73 insertions, 69 deletions
diff --git a/drivers/ddr/fsl/options.c b/drivers/ddr/fsl/options.c index b0cf046fdc..5986e1a0b9 100644 --- a/drivers/ddr/fsl/options.c +++ b/drivers/ddr/fsl/options.c @@ -1,5 +1,5 @@ /* - * Copyright 2008, 2010-2012 Freescale Semiconductor, Inc. + * Copyright 2008, 2010-2014 Freescale Semiconductor, Inc. * * SPDX-License-Identifier: GPL-2.0+ */ @@ -29,7 +29,7 @@ struct dynamic_odt { unsigned int odt_rtt_wr; }; -#ifdef CONFIG_SYS_FSL_DDR3 +#if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4) static const struct dynamic_odt single_Q[4] = { { /* cs0 */ FSL_DDR_ODT_NEVER, @@ -259,7 +259,7 @@ static const struct dynamic_odt odt_unknown[4] = { DDR3_RTT_OFF } }; -#else /* CONFIG_SYS_FSL_DDR3 */ +#else /* CONFIG_SYS_FSL_DDR3 || CONFIG_SYS_FSL_DDR4 */ static const struct dynamic_odt single_Q[4] = { {0, 0, 0, 0}, {0, 0, 0, 0}, @@ -507,7 +507,9 @@ unsigned int populate_memctl_options(int all_dimms_registered, unsigned int i; char buffer[HWCONFIG_BUFFER_SIZE]; char *buf = NULL; -#if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR2) +#if defined(CONFIG_SYS_FSL_DDR3) || \ + defined(CONFIG_SYS_FSL_DDR2) || \ + defined(CONFIG_SYS_FSL_DDR4) const struct dynamic_odt *pdodt = odt_unknown; #endif ulong ddr_freq; @@ -519,73 +521,76 @@ unsigned int populate_memctl_options(int all_dimms_registered, if (getenv_f("hwconfig", buffer, sizeof(buffer)) > 0) buf = buffer; -#if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR2) +#if defined(CONFIG_SYS_FSL_DDR3) || \ + defined(CONFIG_SYS_FSL_DDR2) || \ + defined(CONFIG_SYS_FSL_DDR4) /* Chip select options. */ - if (CONFIG_DIMM_SLOTS_PER_CTLR == 1) { - switch (pdimm[0].n_ranks) { - case 1: - pdodt = single_S; - break; +#if (CONFIG_DIMM_SLOTS_PER_CTLR == 1) + switch (pdimm[0].n_ranks) { + case 1: + pdodt = single_S; + break; + case 2: + pdodt = single_D; + break; + case 4: + pdodt = single_Q; + break; + } +#elif (CONFIG_DIMM_SLOTS_PER_CTLR == 2) + switch (pdimm[0].n_ranks) { +#ifdef CONFIG_FSL_DDR_FIRST_SLOT_QUAD_CAPABLE + case 4: + pdodt = single_Q; + if (pdimm[1].n_ranks) + printf("Error: Quad- and Dual-rank DIMMs cannot be used together\n"); + break; +#endif + case 2: + switch (pdimm[1].n_ranks) { case 2: - pdodt = single_D; + pdodt = dual_DD; break; - case 4: - pdodt = single_Q; + case 1: + pdodt = dual_DS; break; - } - } else if (CONFIG_DIMM_SLOTS_PER_CTLR == 2) { - switch (pdimm[0].n_ranks) { -#ifdef CONFIG_FSL_DDR_FIRST_SLOT_QUAD_CAPABLE - case 4: - pdodt = single_Q; - if (pdimm[1].n_ranks) - printf("Error: Quad- and Dual-rank DIMMs " - "cannot be used together\n"); + case 0: + pdodt = dual_D0; break; -#endif + } + break; + case 1: + switch (pdimm[1].n_ranks) { case 2: - switch (pdimm[1].n_ranks) { - case 2: - pdodt = dual_DD; - break; - case 1: - pdodt = dual_DS; - break; - case 0: - pdodt = dual_D0; - break; - } + pdodt = dual_SD; break; case 1: - switch (pdimm[1].n_ranks) { - case 2: - pdodt = dual_SD; - break; - case 1: - pdodt = dual_SS; - break; - case 0: - pdodt = dual_S0; - break; - } + pdodt = dual_SS; break; case 0: - switch (pdimm[1].n_ranks) { - case 2: - pdodt = dual_0D; - break; - case 1: - pdodt = dual_0S; - break; - } + pdodt = dual_S0; + break; + } + break; + case 0: + switch (pdimm[1].n_ranks) { + case 2: + pdodt = dual_0D; + break; + case 1: + pdodt = dual_0S; break; } + break; } -#endif +#endif /* CONFIG_DIMM_SLOTS_PER_CTLR */ +#endif /* CONFIG_SYS_FSL_DDR2, 3, 4 */ /* Pick chip-select local options. */ for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { -#if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR2) +#if defined(CONFIG_SYS_FSL_DDR3) || \ + defined(CONFIG_SYS_FSL_DDR2) || \ + defined(CONFIG_SYS_FSL_DDR4) popts->cs_local_opts[i].odt_rd_cfg = pdodt[i].odt_rd_cfg; popts->cs_local_opts[i].odt_wr_cfg = pdodt[i].odt_wr_cfg; popts->cs_local_opts[i].odt_rtt_norm = pdodt[i].odt_rtt_norm; @@ -703,7 +708,7 @@ unsigned int populate_memctl_options(int all_dimms_registered, popts->x4_en = (pdimm[0].device_width == 4) ? 1 : 0; /* Choose burst length. */ -#if defined(CONFIG_SYS_FSL_DDR3) +#if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4) #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 */ @@ -722,7 +727,7 @@ unsigned int populate_memctl_options(int all_dimms_registered, #endif /* Choose ddr controller address mirror mode */ -#if defined(CONFIG_SYS_FSL_DDR3) +#if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4) popts->mirrored_dimm = pdimm[0].mirrored_dimm; #endif @@ -766,11 +771,9 @@ unsigned int populate_memctl_options(int all_dimms_registered, * 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 + * The value of 0x100 has been used for DDR1, DDR2, DDR3. + * It is not wrong. Any value should be OK. The performance depends on + * applications. There is no one good value for all. */ popts->bstopre = 0x100; @@ -795,12 +798,12 @@ unsigned int populate_memctl_options(int all_dimms_registered, */ popts->tfaw_window_four_activates_ps = 37500; -#elif defined(CONFIG_SYS_FSL_DDR3) +#else popts->tfaw_window_four_activates_ps = pdimm[0].tfaw_ps; #endif popts->zq_en = 0; popts->wrlvl_en = 0; -#if defined(CONFIG_SYS_FSL_DDR3) +#if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4) /* * due to ddr3 dimm is fly-by topology * we suggest to enable write leveling to @@ -843,8 +846,7 @@ unsigned int populate_memctl_options(int all_dimms_registered, popts->memctl_interleaving_mode = FSL_DDR_256B_INTERLEAVING; popts->memctl_interleaving = 1; debug("256 Byte interleaving\n"); - goto done; -#endif +#else /* * test null first. if CONFIG_HWCONFIG is not defined * hwconfig_arg_cmp returns non-zero @@ -926,8 +928,9 @@ unsigned int populate_memctl_options(int all_dimms_registered, popts->memctl_interleaving = 0; printf("hwconfig has unrecognized parameter for ctlr_intlv.\n"); } +#endif /* CONFIG_SYS_FSL_DDR_INTLV_256B */ done: -#endif +#endif /* CONFIG_NUM_DDR_CONTROLLERS > 1 */ if ((hwconfig_sub_f("fsl_ddr", "bank_intlv", buf)) && (CONFIG_CHIP_SELECTS_PER_CTRL > 1)) { /* test null first. if CONFIG_HWCONFIG is not defined, @@ -1102,10 +1105,11 @@ void check_interleaving_options(fsl_ddr_info_t *pinfo) case FSL_DDR_PAGE_INTERLEAVING: case FSL_DDR_BANK_INTERLEAVING: case FSL_DDR_SUPERBANK_INTERLEAVING: - if (3 == CONFIG_NUM_DDR_CONTROLLERS) +#if (3 == CONFIG_NUM_DDR_CONTROLLERS) k = 2; - else +#else k = CONFIG_NUM_DDR_CONTROLLERS; +#endif break; case FSL_DDR_3WAY_1KB_INTERLEAVING: case FSL_DDR_3WAY_4KB_INTERLEAVING: |
