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u-boot/drivers/ddr/fsl/options.c
York Sun bb5783224b driver/ddr/fsl: Fix tXP and tCKE 
The driver was written using old DDR3 spec which only covers low speeds.
The value would be suboptimal for higher speeds. Fix both timing according
to latest DDR3 spec, remove tCKE as an config option.

Signed-off-by: York Sun <yorksun@freescale.com>
2014-09-25 08:36:18 -07:00

1163 lines
27 KiB
C
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/*
* Copyright 2008, 2010-2014 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <hwconfig.h>
#include <fsl_ddr_sdram.h>
#include <fsl_ddr.h>
/*
* Use our own stack based buffer before relocation to allow accessing longer
* hwconfig strings that might be in the environment before we've relocated.
* This is pretty fragile on both the use of stack and if the buffer is big
* enough. However we will get a warning from getenv_f for the later.
*/
/* 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);
struct dynamic_odt {
unsigned int odt_rd_cfg;
unsigned int odt_wr_cfg;
unsigned int odt_rtt_norm;
unsigned int odt_rtt_wr;
};
#if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4)
static const struct dynamic_odt single_Q[4] = {
{ /* cs0 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_CS_AND_OTHER_DIMM,
DDR3_RTT_20_OHM,
DDR3_RTT_120_OHM
},
{ /* cs1 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_NEVER, /* tied high */
DDR3_RTT_OFF,
DDR3_RTT_120_OHM
},
{ /* cs2 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_CS_AND_OTHER_DIMM,
DDR3_RTT_20_OHM,
DDR3_RTT_120_OHM
},
{ /* cs3 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_NEVER, /* tied high */
DDR3_RTT_OFF,
DDR3_RTT_120_OHM
}
};
static const struct dynamic_odt single_D[4] = {
{ /* cs0 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_ALL,
DDR3_RTT_40_OHM,
DDR3_RTT_OFF
},
{ /* cs1 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_NEVER,
DDR3_RTT_OFF,
DDR3_RTT_OFF
},
{0, 0, 0, 0},
{0, 0, 0, 0}
};
static const struct dynamic_odt single_S[4] = {
{ /* cs0 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_ALL,
DDR3_RTT_40_OHM,
DDR3_RTT_OFF
},
{0, 0, 0, 0},
{0, 0, 0, 0},
{0, 0, 0, 0},
};
static const struct dynamic_odt dual_DD[4] = {
{ /* cs0 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_SAME_DIMM,
DDR3_RTT_120_OHM,
DDR3_RTT_OFF
},
{ /* cs1 */
FSL_DDR_ODT_OTHER_DIMM,
FSL_DDR_ODT_OTHER_DIMM,
DDR3_RTT_30_OHM,
DDR3_RTT_OFF
},
{ /* cs2 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_SAME_DIMM,
DDR3_RTT_120_OHM,
DDR3_RTT_OFF
},
{ /* cs3 */
FSL_DDR_ODT_OTHER_DIMM,
FSL_DDR_ODT_OTHER_DIMM,
DDR3_RTT_30_OHM,
DDR3_RTT_OFF
}
};
static const struct dynamic_odt dual_DS[4] = {
{ /* cs0 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_SAME_DIMM,
DDR3_RTT_120_OHM,
DDR3_RTT_OFF
},
{ /* cs1 */
FSL_DDR_ODT_OTHER_DIMM,
FSL_DDR_ODT_OTHER_DIMM,
DDR3_RTT_30_OHM,
DDR3_RTT_OFF
},
{ /* cs2 */
FSL_DDR_ODT_OTHER_DIMM,
FSL_DDR_ODT_ALL,
DDR3_RTT_20_OHM,
DDR3_RTT_120_OHM
},
{0, 0, 0, 0}
};
static const struct dynamic_odt dual_SD[4] = {
{ /* cs0 */
FSL_DDR_ODT_OTHER_DIMM,
FSL_DDR_ODT_ALL,
DDR3_RTT_20_OHM,
DDR3_RTT_120_OHM
},
{0, 0, 0, 0},
{ /* cs2 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_SAME_DIMM,
DDR3_RTT_120_OHM,
DDR3_RTT_OFF
},
{ /* cs3 */
FSL_DDR_ODT_OTHER_DIMM,
FSL_DDR_ODT_OTHER_DIMM,
DDR3_RTT_20_OHM,
DDR3_RTT_OFF
}
};
static const struct dynamic_odt dual_SS[4] = {
{ /* cs0 */
FSL_DDR_ODT_OTHER_DIMM,
FSL_DDR_ODT_ALL,
DDR3_RTT_30_OHM,
DDR3_RTT_120_OHM
},
{0, 0, 0, 0},
{ /* cs2 */
FSL_DDR_ODT_OTHER_DIMM,
FSL_DDR_ODT_ALL,
DDR3_RTT_30_OHM,
DDR3_RTT_120_OHM
},
{0, 0, 0, 0}
};
static const struct dynamic_odt dual_D0[4] = {
{ /* cs0 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_SAME_DIMM,
DDR3_RTT_40_OHM,
DDR3_RTT_OFF
},
{ /* cs1 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_NEVER,
DDR3_RTT_OFF,
DDR3_RTT_OFF
},
{0, 0, 0, 0},
{0, 0, 0, 0}
};
static const struct dynamic_odt dual_0D[4] = {
{0, 0, 0, 0},
{0, 0, 0, 0},
{ /* cs2 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_SAME_DIMM,
DDR3_RTT_40_OHM,
DDR3_RTT_OFF
},
{ /* cs3 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_NEVER,
DDR3_RTT_OFF,
DDR3_RTT_OFF
}
};
static const struct dynamic_odt dual_S0[4] = {
{ /* cs0 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_CS,
DDR3_RTT_40_OHM,
DDR3_RTT_OFF
},
{0, 0, 0, 0},
{0, 0, 0, 0},
{0, 0, 0, 0}
};
static const struct dynamic_odt dual_0S[4] = {
{0, 0, 0, 0},
{0, 0, 0, 0},
{ /* cs2 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_CS,
DDR3_RTT_40_OHM,
DDR3_RTT_OFF
},
{0, 0, 0, 0}
};
static const struct dynamic_odt odt_unknown[4] = {
{ /* cs0 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_CS,
DDR3_RTT_120_OHM,
DDR3_RTT_OFF
},
{ /* cs1 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_CS,
DDR3_RTT_120_OHM,
DDR3_RTT_OFF
},
{ /* cs2 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_CS,
DDR3_RTT_120_OHM,
DDR3_RTT_OFF
},
{ /* cs3 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_CS,
DDR3_RTT_120_OHM,
DDR3_RTT_OFF
}
};
#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},
{0, 0, 0, 0},
{0, 0, 0, 0}
};
static const struct dynamic_odt single_D[4] = {
{ /* cs0 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_ALL,
DDR2_RTT_150_OHM,
DDR2_RTT_OFF
},
{ /* cs1 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_NEVER,
DDR2_RTT_OFF,
DDR2_RTT_OFF
},
{0, 0, 0, 0},
{0, 0, 0, 0}
};
static const struct dynamic_odt single_S[4] = {
{ /* cs0 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_ALL,
DDR2_RTT_150_OHM,
DDR2_RTT_OFF
},
{0, 0, 0, 0},
{0, 0, 0, 0},
{0, 0, 0, 0},
};
static const struct dynamic_odt dual_DD[4] = {
{ /* cs0 */
FSL_DDR_ODT_OTHER_DIMM,
FSL_DDR_ODT_OTHER_DIMM,
DDR2_RTT_75_OHM,
DDR2_RTT_OFF
},
{ /* cs1 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_NEVER,
DDR2_RTT_OFF,
DDR2_RTT_OFF
},
{ /* cs2 */
FSL_DDR_ODT_OTHER_DIMM,
FSL_DDR_ODT_OTHER_DIMM,
DDR2_RTT_75_OHM,
DDR2_RTT_OFF
},
{ /* cs3 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_NEVER,
DDR2_RTT_OFF,
DDR2_RTT_OFF
}
};
static const struct dynamic_odt dual_DS[4] = {
{ /* cs0 */
FSL_DDR_ODT_OTHER_DIMM,
FSL_DDR_ODT_OTHER_DIMM,
DDR2_RTT_75_OHM,
DDR2_RTT_OFF
},
{ /* cs1 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_NEVER,
DDR2_RTT_OFF,
DDR2_RTT_OFF
},
{ /* cs2 */
FSL_DDR_ODT_OTHER_DIMM,
FSL_DDR_ODT_OTHER_DIMM,
DDR2_RTT_75_OHM,
DDR2_RTT_OFF
},
{0, 0, 0, 0}
};
static const struct dynamic_odt dual_SD[4] = {
{ /* cs0 */
FSL_DDR_ODT_OTHER_DIMM,
FSL_DDR_ODT_OTHER_DIMM,
DDR2_RTT_75_OHM,
DDR2_RTT_OFF
},
{0, 0, 0, 0},
{ /* cs2 */
FSL_DDR_ODT_OTHER_DIMM,
FSL_DDR_ODT_OTHER_DIMM,
DDR2_RTT_75_OHM,
DDR2_RTT_OFF
},
{ /* cs3 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_NEVER,
DDR2_RTT_OFF,
DDR2_RTT_OFF
}
};
static const struct dynamic_odt dual_SS[4] = {
{ /* cs0 */
FSL_DDR_ODT_OTHER_DIMM,
FSL_DDR_ODT_OTHER_DIMM,
DDR2_RTT_75_OHM,
DDR2_RTT_OFF
},
{0, 0, 0, 0},
{ /* cs2 */
FSL_DDR_ODT_OTHER_DIMM,
FSL_DDR_ODT_OTHER_DIMM,
DDR2_RTT_75_OHM,
DDR2_RTT_OFF
},
{0, 0, 0, 0}
};
static const struct dynamic_odt dual_D0[4] = {
{ /* cs0 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_ALL,
DDR2_RTT_150_OHM,
DDR2_RTT_OFF
},
{ /* cs1 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_NEVER,
DDR2_RTT_OFF,
DDR2_RTT_OFF
},
{0, 0, 0, 0},
{0, 0, 0, 0}
};
static const struct dynamic_odt dual_0D[4] = {
{0, 0, 0, 0},
{0, 0, 0, 0},
{ /* cs2 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_ALL,
DDR2_RTT_150_OHM,
DDR2_RTT_OFF
},
{ /* cs3 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_NEVER,
DDR2_RTT_OFF,
DDR2_RTT_OFF
}
};
static const struct dynamic_odt dual_S0[4] = {
{ /* cs0 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_CS,
DDR2_RTT_150_OHM,
DDR2_RTT_OFF
},
{0, 0, 0, 0},
{0, 0, 0, 0},
{0, 0, 0, 0}
};
static const struct dynamic_odt dual_0S[4] = {
{0, 0, 0, 0},
{0, 0, 0, 0},
{ /* cs2 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_CS,
DDR2_RTT_150_OHM,
DDR2_RTT_OFF
},
{0, 0, 0, 0}
};
static const struct dynamic_odt odt_unknown[4] = {
{ /* cs0 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_CS,
DDR2_RTT_75_OHM,
DDR2_RTT_OFF
},
{ /* cs1 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_NEVER,
DDR2_RTT_OFF,
DDR2_RTT_OFF
},
{ /* cs2 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_CS,
DDR2_RTT_75_OHM,
DDR2_RTT_OFF
},
{ /* cs3 */
FSL_DDR_ODT_NEVER,
FSL_DDR_ODT_NEVER,
DDR2_RTT_OFF,
DDR2_RTT_OFF
}
};
#endif
/*
* Automatically seleect bank interleaving mode based on DIMMs
* in this order: cs0_cs1_cs2_cs3, cs0_cs1, null.
* This function only deal with one or two slots per controller.
*/
static inline unsigned int auto_bank_intlv(dimm_params_t *pdimm)
{
#if (CONFIG_DIMM_SLOTS_PER_CTLR == 1)
if (pdimm[0].n_ranks == 4)
return FSL_DDR_CS0_CS1_CS2_CS3;
else if (pdimm[0].n_ranks == 2)
return FSL_DDR_CS0_CS1;
#elif (CONFIG_DIMM_SLOTS_PER_CTLR == 2)
#ifdef CONFIG_FSL_DDR_FIRST_SLOT_QUAD_CAPABLE
if (pdimm[0].n_ranks == 4)
return FSL_DDR_CS0_CS1_CS2_CS3;
#endif
if (pdimm[0].n_ranks == 2) {
if (pdimm[1].n_ranks == 2)
return FSL_DDR_CS0_CS1_CS2_CS3;
else
return FSL_DDR_CS0_CS1;
}
#endif
return 0;
}
unsigned int populate_memctl_options(int all_dimms_registered,
memctl_options_t *popts,
dimm_params_t *pdimm,
unsigned int ctrl_num)
{
unsigned int i;
char buffer[HWCONFIG_BUFFER_SIZE];
char *buf = NULL;
#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;
/*
* Extract hwconfig from environment since we have not properly setup
* the environment but need it for ddr config params
*/
if (getenv_f("hwconfig", buffer, sizeof(buffer)) > 0)
buf = buffer;
#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;
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 = dual_DD;
break;
case 1:
pdodt = dual_DS;
break;
case 0:
pdodt = dual_D0;
break;
}
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;
}
break;
case 0:
switch (pdimm[1].n_ranks) {
case 2:
pdodt = dual_0D;
break;
case 1:
pdodt = dual_0S;
break;
}
break;
}
#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) || \
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;
popts->cs_local_opts[i].odt_rtt_wr = pdodt[i].odt_rtt_wr;
#else
popts->cs_local_opts[i].odt_rd_cfg = FSL_DDR_ODT_NEVER;
popts->cs_local_opts[i].odt_wr_cfg = FSL_DDR_ODT_CS;
#endif
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 */
popts->ecc_mode = 0; /* 0 = disabled, 1 = enabled */
#ifdef CONFIG_DDR_ECC
if (hwconfig_sub_f("fsl_ddr", "ecc", buf)) {
if (hwconfig_subarg_cmp_f("fsl_ddr", "ecc", "on", buf))
popts->ecc_mode = 1;
} else
popts->ecc_mode = 1;
#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_SYS_FSL_DDR1)
popts->dqs_config = 0;
#elif defined(CONFIG_SYS_FSL_DDR2) || defined(CONFIG_SYS_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;
/*
* check first dimm for primary sdram width
* presuming all dimms are similar
* 0 = 64-bit, 1 = 32-bit, 2 = 16-bit
*/
#if defined(CONFIG_SYS_FSL_DDR1) || defined(CONFIG_SYS_FSL_DDR2)
if (pdimm[0].n_ranks != 0) {
if ((pdimm[0].data_width >= 64) && \
(pdimm[0].data_width <= 72))
popts->data_bus_width = 0;
else if ((pdimm[0].data_width >= 32) || \
(pdimm[0].data_width <= 40))
popts->data_bus_width = 1;
else {
panic("Error: data width %u is invalid!\n",
pdimm[0].data_width);
}
}
#else
if (pdimm[0].n_ranks != 0) {
if (pdimm[0].primary_sdram_width == 64)
popts->data_bus_width = 0;
else if (pdimm[0].primary_sdram_width == 32)
popts->data_bus_width = 1;
else if (pdimm[0].primary_sdram_width == 16)
popts->data_bus_width = 2;
else {
panic("Error: primary sdram width %u is invalid!\n",
pdimm[0].primary_sdram_width);
}
}
#endif
popts->x4_en = (pdimm[0].device_width == 4) ? 1 : 0;
/* Choose burst length. */
#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 */
#else
if ((popts->data_bus_width == 1) || (popts->data_bus_width == 2)) {
/* 32-bit or 16-bit bus */
popts->otf_burst_chop_en = 0;
popts->burst_length = DDR_BL8;
} 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_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4)
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;
/* for RDIMM, address parity enable */
popts->ap_en = 1;
/*
* BSTTOPRE precharge interval
*
* Set this to 0 for global auto precharge
* 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;
/*
* 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_SYS_FSL_DDR1)
popts->tfaw_window_four_activates_ps = mclk_to_picos(1);
#elif defined(CONFIG_SYS_FSL_DDR2)
/*
* x4/x8; some datasheets have 35000
* x16 wide columns only? Use 50000?
*/
popts->tfaw_window_four_activates_ps = 37500;
#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) || defined(CONFIG_SYS_FSL_DDR4)
/*
* 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->zq_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 all memory controllers.
*
* Attempt to set all 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_SYS_FSL_DDR_INTLV_256B is defined, mandatory interleaving
* with 256 Byte is enabled.
*/
#if (CONFIG_NUM_DDR_CONTROLLERS > 1)
if (!hwconfig_sub_f("fsl_ddr", "ctlr_intlv", buf))
#ifdef CONFIG_SYS_FSL_DDR_INTLV_256B
;
#else
goto done;
#endif
if (pdimm[0].n_ranks == 0) {
printf("There is no rank on CS0 for controller %d.\n", ctrl_num);
popts->memctl_interleaving = 0;
goto done;
}
popts->memctl_interleaving = 1;
#ifdef CONFIG_SYS_FSL_DDR_INTLV_256B
popts->memctl_interleaving_mode = FSL_DDR_256B_INTERLEAVING;
popts->memctl_interleaving = 1;
debug("256 Byte interleaving\n");
#else
/*
* test null first. if CONFIG_HWCONFIG is not defined
* hwconfig_arg_cmp returns non-zero
*/
if (hwconfig_subarg_cmp_f("fsl_ddr", "ctlr_intlv",
"null", buf)) {
popts->memctl_interleaving = 0;
debug("memory controller interleaving disabled.\n");
} else if (hwconfig_subarg_cmp_f("fsl_ddr",
"ctlr_intlv",
"cacheline", buf)) {
popts->memctl_interleaving_mode =
((CONFIG_NUM_DDR_CONTROLLERS == 3) && ctrl_num == 2) ?
0 : FSL_DDR_CACHE_LINE_INTERLEAVING;
popts->memctl_interleaving =
((CONFIG_NUM_DDR_CONTROLLERS == 3) && ctrl_num == 2) ?
0 : 1;
} else if (hwconfig_subarg_cmp_f("fsl_ddr",
"ctlr_intlv",
"page", buf)) {
popts->memctl_interleaving_mode =
((CONFIG_NUM_DDR_CONTROLLERS == 3) && ctrl_num == 2) ?
0 : FSL_DDR_PAGE_INTERLEAVING;
popts->memctl_interleaving =
((CONFIG_NUM_DDR_CONTROLLERS == 3) && ctrl_num == 2) ?
0 : 1;
} else if (hwconfig_subarg_cmp_f("fsl_ddr",
"ctlr_intlv",
"bank", buf)) {
popts->memctl_interleaving_mode =
((CONFIG_NUM_DDR_CONTROLLERS == 3) && ctrl_num == 2) ?
0 : FSL_DDR_BANK_INTERLEAVING;
popts->memctl_interleaving =
((CONFIG_NUM_DDR_CONTROLLERS == 3) && ctrl_num == 2) ?
0 : 1;
} else if (hwconfig_subarg_cmp_f("fsl_ddr",
"ctlr_intlv",
"superbank", buf)) {
popts->memctl_interleaving_mode =
((CONFIG_NUM_DDR_CONTROLLERS == 3) && ctrl_num == 2) ?
0 : FSL_DDR_SUPERBANK_INTERLEAVING;
popts->memctl_interleaving =
((CONFIG_NUM_DDR_CONTROLLERS == 3) && ctrl_num == 2) ?
0 : 1;
#if (CONFIG_NUM_DDR_CONTROLLERS == 3)
} else if (hwconfig_subarg_cmp_f("fsl_ddr",
"ctlr_intlv",
"3way_1KB", buf)) {
popts->memctl_interleaving_mode =
FSL_DDR_3WAY_1KB_INTERLEAVING;
} else if (hwconfig_subarg_cmp_f("fsl_ddr",
"ctlr_intlv",
"3way_4KB", buf)) {
popts->memctl_interleaving_mode =
FSL_DDR_3WAY_4KB_INTERLEAVING;
} else if (hwconfig_subarg_cmp_f("fsl_ddr",
"ctlr_intlv",
"3way_8KB", buf)) {
popts->memctl_interleaving_mode =
FSL_DDR_3WAY_8KB_INTERLEAVING;
#elif (CONFIG_NUM_DDR_CONTROLLERS == 4)
} else if (hwconfig_subarg_cmp_f("fsl_ddr",
"ctlr_intlv",
"4way_1KB", buf)) {
popts->memctl_interleaving_mode =
FSL_DDR_4WAY_1KB_INTERLEAVING;
} else if (hwconfig_subarg_cmp_f("fsl_ddr",
"ctlr_intlv",
"4way_4KB", buf)) {
popts->memctl_interleaving_mode =
FSL_DDR_4WAY_4KB_INTERLEAVING;
} else if (hwconfig_subarg_cmp_f("fsl_ddr",
"ctlr_intlv",
"4way_8KB", buf)) {
popts->memctl_interleaving_mode =
FSL_DDR_4WAY_8KB_INTERLEAVING;
#endif
} else {
popts->memctl_interleaving = 0;
printf("hwconfig has unrecognized parameter for ctlr_intlv.\n");
}
#endif /* CONFIG_SYS_FSL_DDR_INTLV_256B */
done:
#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,
* hwconfig_subarg_cmp_f returns non-zero */
if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv",
"null", buf))
debug("bank interleaving disabled.\n");
else if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv",
"cs0_cs1", buf))
popts->ba_intlv_ctl = FSL_DDR_CS0_CS1;
else if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv",
"cs2_cs3", buf))
popts->ba_intlv_ctl = FSL_DDR_CS2_CS3;
else if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv",
"cs0_cs1_and_cs2_cs3", buf))
popts->ba_intlv_ctl = FSL_DDR_CS0_CS1_AND_CS2_CS3;
else if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv",
"cs0_cs1_cs2_cs3", buf))
popts->ba_intlv_ctl = FSL_DDR_CS0_CS1_CS2_CS3;
else if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv",
"auto", buf))
popts->ba_intlv_ctl = auto_bank_intlv(pdimm);
else
printf("hwconfig has unrecognized parameter for bank_intlv.\n");
switch (popts->ba_intlv_ctl & FSL_DDR_CS0_CS1_CS2_CS3) {
case FSL_DDR_CS0_CS1_CS2_CS3:
#if (CONFIG_DIMM_SLOTS_PER_CTLR == 1)
if (pdimm[0].n_ranks < 4) {
popts->ba_intlv_ctl = 0;
printf("Not enough bank(chip-select) for "
"CS0+CS1+CS2+CS3 on controller %d, "
"interleaving disabled!\n", ctrl_num);
}
#elif (CONFIG_DIMM_SLOTS_PER_CTLR == 2)
#ifdef CONFIG_FSL_DDR_FIRST_SLOT_QUAD_CAPABLE
if (pdimm[0].n_ranks == 4)
break;
#endif
if ((pdimm[0].n_ranks < 2) && (pdimm[1].n_ranks < 2)) {
popts->ba_intlv_ctl = 0;
printf("Not enough bank(chip-select) for "
"CS0+CS1+CS2+CS3 on controller %d, "
"interleaving disabled!\n", ctrl_num);
}
if (pdimm[0].capacity != pdimm[1].capacity) {
popts->ba_intlv_ctl = 0;
printf("Not identical DIMM size for "
"CS0+CS1+CS2+CS3 on controller %d, "
"interleaving disabled!\n", ctrl_num);
}
#endif
break;
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 on controller %d, "
"interleaving disabled!\n", ctrl_num);
}
break;
case FSL_DDR_CS2_CS3:
#if (CONFIG_DIMM_SLOTS_PER_CTLR == 1)
if (pdimm[0].n_ranks < 4) {
popts->ba_intlv_ctl = 0;
printf("Not enough bank(chip-select) for CS2+CS3 "
"on controller %d, interleaving disabled!\n", ctrl_num);
}
#elif (CONFIG_DIMM_SLOTS_PER_CTLR == 2)
if (pdimm[1].n_ranks < 2) {
popts->ba_intlv_ctl = 0;
printf("Not enough bank(chip-select) for CS2+CS3 "
"on controller %d, interleaving disabled!\n", ctrl_num);
}
#endif
break;
case FSL_DDR_CS0_CS1_AND_CS2_CS3:
#if (CONFIG_DIMM_SLOTS_PER_CTLR == 1)
if (pdimm[0].n_ranks < 4) {
popts->ba_intlv_ctl = 0;
printf("Not enough bank(CS) for CS0+CS1 and "
"CS2+CS3 on controller %d, "
"interleaving disabled!\n", ctrl_num);
}
#elif (CONFIG_DIMM_SLOTS_PER_CTLR == 2)
if ((pdimm[0].n_ranks < 2) || (pdimm[1].n_ranks < 2)) {
popts->ba_intlv_ctl = 0;
printf("Not enough bank(CS) for CS0+CS1 and "
"CS2+CS3 on controller %d, "
"interleaving disabled!\n", ctrl_num);
}
#endif
break;
default:
popts->ba_intlv_ctl = 0;
break;
}
}
if (hwconfig_sub_f("fsl_ddr", "addr_hash", buf)) {
if (hwconfig_subarg_cmp_f("fsl_ddr", "addr_hash", "null", buf))
popts->addr_hash = 0;
else if (hwconfig_subarg_cmp_f("fsl_ddr", "addr_hash",
"true", buf))
popts->addr_hash = 1;
}
if (pdimm[0].n_ranks == 4)
popts->quad_rank_present = 1;
ddr_freq = get_ddr_freq(0) / 1000000;
if (popts->registered_dimm_en) {
popts->rcw_override = 1;
popts->rcw_1 = 0x000a5a00;
if (ddr_freq <= 800)
popts->rcw_2 = 0x00000000;
else if (ddr_freq <= 1066)
popts->rcw_2 = 0x00100000;
else if (ddr_freq <= 1333)
popts->rcw_2 = 0x00200000;
else
popts->rcw_2 = 0x00300000;
}
fsl_ddr_board_options(popts, pdimm, ctrl_num);
return 0;
}
void check_interleaving_options(fsl_ddr_info_t *pinfo)
{
int i, j, k, check_n_ranks, intlv_invalid = 0;
unsigned int check_intlv, check_n_row_addr, check_n_col_addr;
unsigned long long check_rank_density;
struct dimm_params_s *dimm;
int first_ctrl = pinfo->first_ctrl;
int last_ctrl = first_ctrl + pinfo->num_ctrls - 1;
/*
* Check if all controllers are configured for memory
* controller interleaving. Identical dimms are recommended. At least
* the size, row and col address should be checked.
*/
j = 0;
check_n_ranks = pinfo->dimm_params[first_ctrl][0].n_ranks;
check_rank_density = pinfo->dimm_params[first_ctrl][0].rank_density;
check_n_row_addr = pinfo->dimm_params[first_ctrl][0].n_row_addr;
check_n_col_addr = pinfo->dimm_params[first_ctrl][0].n_col_addr;
check_intlv = pinfo->memctl_opts[first_ctrl].memctl_interleaving_mode;
for (i = first_ctrl; i <= last_ctrl; i++) {
dimm = &pinfo->dimm_params[i][0];
if (!pinfo->memctl_opts[i].memctl_interleaving) {
continue;
} else if (((check_rank_density != dimm->rank_density) ||
(check_n_ranks != dimm->n_ranks) ||
(check_n_row_addr != dimm->n_row_addr) ||
(check_n_col_addr != dimm->n_col_addr) ||
(check_intlv !=
pinfo->memctl_opts[i].memctl_interleaving_mode))){
intlv_invalid = 1;
break;
} else {
j++;
}
}
if (intlv_invalid) {
for (i = first_ctrl; i <= last_ctrl; i++)
pinfo->memctl_opts[i].memctl_interleaving = 0;
printf("Not all DIMMs are identical. "
"Memory controller interleaving disabled.\n");
} else {
switch (check_intlv) {
case FSL_DDR_256B_INTERLEAVING:
case FSL_DDR_CACHE_LINE_INTERLEAVING:
case FSL_DDR_PAGE_INTERLEAVING:
case FSL_DDR_BANK_INTERLEAVING:
case FSL_DDR_SUPERBANK_INTERLEAVING:
#if (3 == CONFIG_NUM_DDR_CONTROLLERS)
k = 2;
#else
k = CONFIG_NUM_DDR_CONTROLLERS;
#endif
break;
case FSL_DDR_3WAY_1KB_INTERLEAVING:
case FSL_DDR_3WAY_4KB_INTERLEAVING:
case FSL_DDR_3WAY_8KB_INTERLEAVING:
case FSL_DDR_4WAY_1KB_INTERLEAVING:
case FSL_DDR_4WAY_4KB_INTERLEAVING:
case FSL_DDR_4WAY_8KB_INTERLEAVING:
default:
k = CONFIG_NUM_DDR_CONTROLLERS;
break;
}
debug("%d of %d controllers are interleaving.\n", j, k);
if (j && (j != k)) {
for (i = first_ctrl; i <= last_ctrl; i++)
pinfo->memctl_opts[i].memctl_interleaving = 0;
if ((last_ctrl - first_ctrl) > 1)
puts("Not all controllers have compatible interleaving mode. All disabled.\n");
}
}
debug("Checking interleaving options completed\n");
}
int fsl_use_spd(void)
{
int use_spd = 0;
#ifdef CONFIG_DDR_SPD
char buffer[HWCONFIG_BUFFER_SIZE];
char *buf = NULL;
/*
* Extract hwconfig from environment since we have not properly setup
* the environment but need it for ddr config params
*/
if (getenv_f("hwconfig", buffer, sizeof(buffer)) > 0)
buf = buffer;
/* if hwconfig is not enabled, or "sdram" is not defined, use spd */
if (hwconfig_sub_f("fsl_ddr", "sdram", buf)) {
if (hwconfig_subarg_cmp_f("fsl_ddr", "sdram", "spd", buf))
use_spd = 1;
else if (hwconfig_subarg_cmp_f("fsl_ddr", "sdram",
"fixed", buf))
use_spd = 0;
else
use_spd = 1;
} else
use_spd = 1;
#endif
return use_spd;
}
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