driver/ddr/fsl: Add DDR4 support to Freescale DDR driver
Mostly reusing DDR3 driver, this patch adds DDR4 SPD handling, register
calculation and programming.
Signed-off-by: York Sun <yorksun@freescale.com>
diff --git a/drivers/ddr/fsl/ctrl_regs.c b/drivers/ddr/fsl/ctrl_regs.c
index 0882932..d01eea0 100644
--- a/drivers/ddr/fsl/ctrl_regs.c
+++ b/drivers/ddr/fsl/ctrl_regs.c
@@ -1,5 +1,5 @@
/*
- * Copyright 2008-2012 Freescale Semiconductor, Inc.
+ * Copyright 2008-2014 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
@@ -17,20 +17,6 @@
#include <fsl_immap.h>
#include <asm/io.h>
-#define _DDR_ADDR CONFIG_SYS_FSL_DDR_ADDR
-
-static u32 fsl_ddr_get_version(void)
-{
- struct ccsr_ddr __iomem *ddr;
- u32 ver_major_minor_errata;
-
- ddr = (void *)_DDR_ADDR;
- ver_major_minor_errata = (ddr_in32(&ddr->ip_rev1) & 0xFFFF) << 8;
- ver_major_minor_errata |= (ddr_in32(&ddr->ip_rev2) & 0xFF00) >> 8;
-
- return ver_major_minor_errata;
-}
-
unsigned int picos_to_mclk(unsigned int picos);
/*
@@ -81,6 +67,39 @@
return rtt;
}
+#ifdef CONFIG_SYS_FSL_DDR4
+/*
+ * compute CAS write latency according to DDR4 spec
+ * CWL = 9 for <= 1600MT/s
+ * 10 for <= 1866MT/s
+ * 11 for <= 2133MT/s
+ * 12 for <= 2400MT/s
+ * 14 for <= 2667MT/s
+ * 16 for <= 2933MT/s
+ * 18 for higher
+ */
+static inline unsigned int compute_cas_write_latency(void)
+{
+ unsigned int cwl;
+ const unsigned int mclk_ps = get_memory_clk_period_ps();
+ if (mclk_ps >= 1250)
+ cwl = 9;
+ else if (mclk_ps >= 1070)
+ cwl = 10;
+ else if (mclk_ps >= 935)
+ cwl = 11;
+ else if (mclk_ps >= 833)
+ cwl = 12;
+ else if (mclk_ps >= 750)
+ cwl = 14;
+ else if (mclk_ps >= 681)
+ cwl = 16;
+ else
+ cwl = 18;
+
+ return cwl;
+}
+#else
/*
* compute the CAS write latency according to DDR3 spec
* CWL = 5 if tCK >= 2.5ns
@@ -119,6 +138,7 @@
}
return cwl;
}
+#endif
/* Chip Select Configuration (CSn_CONFIG) */
static void set_csn_config(int dimm_number, int i, fsl_ddr_cfg_regs_t *ddr,
@@ -135,6 +155,11 @@
unsigned int row_bits_cs_n = 0; /* Num of row bits for SDRAM on CSn */
unsigned int col_bits_cs_n = 0; /* Num of ocl bits for SDRAM on CSn */
int go_config = 0;
+#ifdef CONFIG_SYS_FSL_DDR4
+ unsigned int bg_bits_cs_n = 0; /* Num of bank group bits */
+#else
+ unsigned int n_banks_per_sdram_device;
+#endif
/* Compute CS_CONFIG only for existing ranks of each DIMM. */
switch (i) {
@@ -178,14 +203,18 @@
break;
}
if (go_config) {
- unsigned int n_banks_per_sdram_device;
cs_n_en = 1;
ap_n_en = popts->cs_local_opts[i].auto_precharge;
odt_rd_cfg = popts->cs_local_opts[i].odt_rd_cfg;
odt_wr_cfg = popts->cs_local_opts[i].odt_wr_cfg;
+#ifdef CONFIG_SYS_FSL_DDR4
+ ba_bits_cs_n = dimm_params[dimm_number].bank_addr_bits;
+ bg_bits_cs_n = dimm_params[dimm_number].bank_group_bits;
+#else
n_banks_per_sdram_device
= dimm_params[dimm_number].n_banks_per_sdram_device;
ba_bits_cs_n = __ilog2(n_banks_per_sdram_device) - 2;
+#endif
row_bits_cs_n = dimm_params[dimm_number].n_row_addr - 12;
col_bits_cs_n = dimm_params[dimm_number].n_col_addr - 8;
}
@@ -203,6 +232,9 @@
| ((ba_bits_cs_n & 0x3) << 14)
| ((row_bits_cs_n & 0x7) << 8)
+#ifdef CONFIG_SYS_FSL_DDR4
+ | ((bg_bits_cs_n & 0x3) << 4)
+#endif
| ((col_bits_cs_n & 0x7) << 0)
);
debug("FSLDDR: cs[%d]_config = 0x%08x\n", i,ddr->cs[i].config);
@@ -262,11 +294,23 @@
/* Precharge powerdown exit timing (tXP). */
unsigned char pre_pd_exit_mclk;
/* ODT powerdown exit timing (tAXPD). */
- unsigned char taxpd_mclk;
+ unsigned char taxpd_mclk = 0;
/* Mode register set cycle time (tMRD). */
unsigned char tmrd_mclk;
-#ifdef CONFIG_SYS_FSL_DDR3
+#ifdef CONFIG_SYS_FSL_DDR4
+ /* tXP=max(4nCK, 6ns) */
+ int txp = max((get_memory_clk_period_ps() * 4), 6000); /* unit=ps */
+ trwt_mclk = 2;
+ twrt_mclk = 1;
+ act_pd_exit_mclk = picos_to_mclk(txp);
+ pre_pd_exit_mclk = act_pd_exit_mclk;
+ /*
+ * MRS_CYC = max(tMRD, tMOD)
+ * tMRD = 8nCK, tMOD = max(24nCK, 15ns)
+ */
+ tmrd_mclk = max(24, picos_to_mclk(15000));
+#elif defined(CONFIG_SYS_FSL_DDR3)
/*
* (tXARD and tXARDS). Empirical?
* The DDR3 spec has not tXARD,
@@ -275,7 +319,7 @@
* spec has not the tAXPD, we use
* tAXPD=1, need design to confirm.
*/
- int tXP = max((get_memory_clk_period_ps() * 3), 7500); /* unit=ps */
+ int txp = max((get_memory_clk_period_ps() * 3), 7500); /* unit=ps */
unsigned int data_rate = get_ddr_freq(0);
tmrd_mclk = 4;
/* set the turnaround time */
@@ -300,7 +344,7 @@
taxpd_mclk = 1;
} else {
/* act_pd_exit_mclk = tXARD, see above */
- act_pd_exit_mclk = picos_to_mclk(tXP);
+ act_pd_exit_mclk = picos_to_mclk(txp);
/* Mode register MR0[A12] is '1' - fast exit */
pre_pd_exit_mclk = act_pd_exit_mclk;
taxpd_mclk = 1;
@@ -364,8 +408,12 @@
ext_acttorw = picos_to_mclk(common_dimm->trcd_ps) >> 4;
ext_caslat = (2 * cas_latency - 1) >> 4;
ext_add_lat = additive_latency >> 4;
+#ifdef CONFIG_SYS_FSL_DDR4
+ ext_refrec = (picos_to_mclk(common_dimm->trfc1_ps) - 8) >> 4;
+#else
ext_refrec = (picos_to_mclk(common_dimm->trfc_ps) - 8) >> 4;
/* ext_wrrec only deals with 16 clock and above, or 14 with OTF */
+#endif
ext_wrrec = (picos_to_mclk(common_dimm->twr_ps) +
(popts->otf_burst_chop_en ? 2 : 0)) >> 4;
@@ -404,9 +452,19 @@
unsigned char acttoact_mclk;
/* Last write data pair to read command issue interval (tWTR) */
unsigned char wrtord_mclk;
+#ifdef CONFIG_SYS_FSL_DDR4
+ /* DDR4 supports 10, 12, 14, 16, 18, 20, 24 */
+ static const u8 wrrec_table[] = {
+ 10, 10, 10, 10, 10,
+ 10, 10, 10, 10, 10,
+ 12, 12, 14, 14, 16,
+ 16, 18, 18, 20, 20,
+ 24, 24, 24, 24};
+#else
/* DDR_SDRAM_MODE doesn't support 9,11,13,15 */
static const u8 wrrec_table[] = {
1, 2, 3, 4, 5, 6, 7, 8, 10, 10, 12, 12, 14, 14, 0, 0};
+#endif
pretoact_mclk = picos_to_mclk(common_dimm->trp_ps);
acttopre_mclk = picos_to_mclk(common_dimm->tras_ps);
@@ -438,20 +496,34 @@
* we need set extend bit for it at
* TIMING_CFG_3[EXT_CASLAT]
*/
- caslat_ctrl = 2 * cas_latency - 1;
+ if (fsl_ddr_get_version() <= 0x40400)
+ caslat_ctrl = 2 * cas_latency - 1;
+ else
+ caslat_ctrl = (cas_latency - 1) << 1;
#endif
+#ifdef CONFIG_SYS_FSL_DDR4
+ refrec_ctrl = picos_to_mclk(common_dimm->trfc1_ps) - 8;
+ wrrec_mclk = picos_to_mclk(common_dimm->twr_ps);
+ acttoact_mclk = max(picos_to_mclk(common_dimm->trrds_ps), 4);
+ wrtord_mclk = max(2, picos_to_mclk(2500));
+ if (wrrec_mclk > 24)
+ printf("Error: WRREC doesn't support more than 24 clocks\n");
+ else
+ wrrec_mclk = wrrec_table[wrrec_mclk - 1];
+#else
refrec_ctrl = picos_to_mclk(common_dimm->trfc_ps) - 8;
wrrec_mclk = picos_to_mclk(common_dimm->twr_ps);
-
+ acttoact_mclk = picos_to_mclk(common_dimm->trrd_ps);
+ wrtord_mclk = picos_to_mclk(common_dimm->twtr_ps);
if (wrrec_mclk > 16)
printf("Error: WRREC doesn't support more than 16 clocks\n");
else
wrrec_mclk = wrrec_table[wrrec_mclk - 1];
+#endif
if (popts->otf_burst_chop_en)
wrrec_mclk += 2;
- acttoact_mclk = picos_to_mclk(common_dimm->trrd_ps);
/*
* JEDEC has min requirement for tRRD
*/
@@ -459,7 +531,6 @@
if (acttoact_mclk < 4)
acttoact_mclk = 4;
#endif
- wrtord_mclk = picos_to_mclk(common_dimm->twtr_ps);
/*
* JEDEC has some min requirements for tWTR
*/
@@ -526,14 +597,18 @@
wr_lat = compute_cas_write_latency();
#endif
+#ifdef CONFIG_SYS_FSL_DDR4
+ rd_to_pre = picos_to_mclk(7500);
+#else
rd_to_pre = picos_to_mclk(common_dimm->trtp_ps);
+#endif
/*
* JEDEC has some min requirements for tRTP
*/
#if defined(CONFIG_SYS_FSL_DDR2)
if (rd_to_pre < 2)
rd_to_pre = 2;
-#elif defined(CONFIG_SYS_FSL_DDR3)
+#elif defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4)
if (rd_to_pre < 4)
rd_to_pre = 4;
#endif
@@ -541,13 +616,20 @@
rd_to_pre += 2; /* according to UM */
wr_data_delay = popts->write_data_delay;
+#ifdef CONFIG_SYS_FSL_DDR4
+ cpo = 0;
+ cke_pls = max(3, picos_to_mclk(5000));
+#else
cke_pls = picos_to_mclk(popts->tcke_clock_pulse_width_ps);
+#endif
+
four_act = picos_to_mclk(popts->tfaw_window_four_activates_ps);
ddr->timing_cfg_2 = (0
| ((add_lat_mclk & 0xf) << 28)
| ((cpo & 0x1f) << 23)
| ((wr_lat & 0xf) << 19)
+ | ((wr_lat & 0x10) << 14)
| ((rd_to_pre & RD_TO_PRE_MASK) << RD_TO_PRE_SHIFT)
| ((wr_data_delay & WR_DATA_DELAY_MASK) << WR_DATA_DELAY_SHIFT)
| ((cke_pls & 0x7) << 6)
@@ -640,7 +722,8 @@
* we must clear it when use the on-the-fly mode,
* must set it when use the 32-bits bus mode.
*/
- if (sdram_type == SDRAM_TYPE_DDR3) {
+ if ((sdram_type == SDRAM_TYPE_DDR3) ||
+ (sdram_type == SDRAM_TYPE_DDR4)) {
if (popts->burst_length == DDR_BL8)
eight_be = 1;
if (popts->burst_length == DDR_OTF)
@@ -682,8 +765,6 @@
{
unsigned int frc_sr = 0; /* Force self refresh */
unsigned int sr_ie = 0; /* Self-refresh interrupt enable */
- unsigned int dll_rst_dis; /* DLL reset disable */
- unsigned int dqs_cfg; /* DQS configuration */
unsigned int odt_cfg = 0; /* ODT configuration */
unsigned int num_pr; /* Number of posted refreshes */
unsigned int slow = 0; /* DDR will be run less than 1250 */
@@ -695,9 +776,12 @@
unsigned int md_en = 0; /* Mirrored DIMM Enable */
unsigned int qd_en = 0; /* quad-rank DIMM Enable */
int i;
+#ifndef CONFIG_SYS_FSL_DDR4
+ unsigned int dll_rst_dis = 1; /* DLL reset disable */
+ unsigned int dqs_cfg; /* DQS configuration */
- dll_rst_dis = 1; /* Make this configurable */
dqs_cfg = popts->dqs_config;
+#endif
for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
if (popts->cs_local_opts[i].odt_rd_cfg
|| popts->cs_local_opts[i].odt_wr_cfg) {
@@ -715,7 +799,7 @@
* * ({EXT_REFREC || REFREC} + 8 + 2)]}
* << DDR_SDRAM_INTERVAL[REFINT]
*/
-#if defined(CONFIG_SYS_FSL_DDR3)
+#if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4)
obc_cfg = popts->otf_burst_chop_en;
#else
obc_cfg = 0;
@@ -744,15 +828,17 @@
d_init = 0;
#endif
-#if defined(CONFIG_SYS_FSL_DDR3)
+#if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4)
md_en = popts->mirrored_dimm;
#endif
qd_en = popts->quad_rank_present ? 1 : 0;
ddr->ddr_sdram_cfg_2 = (0
| ((frc_sr & 0x1) << 31)
| ((sr_ie & 0x1) << 30)
+#ifndef CONFIG_SYS_FSL_DDR4
| ((dll_rst_dis & 0x1) << 29)
| ((dqs_cfg & 0x3) << 26)
+#endif
| ((odt_cfg & 0x3) << 21)
| ((num_pr & 0xf) << 12)
| ((slow & 1) << 11)
@@ -768,6 +854,7 @@
debug("FSLDDR: ddr_sdram_cfg_2 = 0x%08x\n", ddr->ddr_sdram_cfg_2);
}
+#ifdef CONFIG_SYS_FSL_DDR4
/* DDR SDRAM Mode configuration 2 (DDR_SDRAM_MODE_2) */
static void set_ddr_sdram_mode_2(fsl_ddr_cfg_regs_t *ddr,
const memctl_options_t *popts,
@@ -776,8 +863,93 @@
{
unsigned short esdmode2 = 0; /* Extended SDRAM mode 2 */
unsigned short esdmode3 = 0; /* Extended SDRAM mode 3 */
+ int i;
+ unsigned int wr_crc = 0; /* Disable */
+ unsigned int rtt_wr = 0; /* Rtt_WR - dynamic ODT off */
+ unsigned int srt = 0; /* self-refresh temerature, normal range */
+ unsigned int cwl = compute_cas_write_latency() - 9;
+ unsigned int mpr = 0; /* serial */
+ unsigned int wc_lat;
+ const unsigned int mclk_ps = get_memory_clk_period_ps();
-#if defined(CONFIG_SYS_FSL_DDR3)
+ if (popts->rtt_override)
+ rtt_wr = popts->rtt_wr_override_value;
+ else
+ rtt_wr = popts->cs_local_opts[0].odt_rtt_wr;
+
+ if (common_dimm->extended_op_srt)
+ srt = common_dimm->extended_op_srt;
+
+ esdmode2 = (0
+ | ((wr_crc & 0x1) << 12)
+ | ((rtt_wr & 0x3) << 9)
+ | ((srt & 0x3) << 6)
+ | ((cwl & 0x7) << 3));
+
+ if (mclk_ps >= 1250)
+ wc_lat = 0;
+ else if (mclk_ps >= 833)
+ wc_lat = 1;
+ else
+ wc_lat = 2;
+
+ esdmode3 = (0
+ | ((mpr & 0x3) << 11)
+ | ((wc_lat & 0x3) << 9));
+
+ ddr->ddr_sdram_mode_2 = (0
+ | ((esdmode2 & 0xFFFF) << 16)
+ | ((esdmode3 & 0xFFFF) << 0)
+ );
+ debug("FSLDDR: ddr_sdram_mode_2 = 0x%08x\n", ddr->ddr_sdram_mode_2);
+
+ if (unq_mrs_en) { /* unique mode registers are supported */
+ for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
+ if (popts->rtt_override)
+ rtt_wr = popts->rtt_wr_override_value;
+ else
+ rtt_wr = popts->cs_local_opts[i].odt_rtt_wr;
+
+ esdmode2 &= 0xF9FF; /* clear bit 10, 9 */
+ esdmode2 |= (rtt_wr & 0x3) << 9;
+ switch (i) {
+ case 1:
+ ddr->ddr_sdram_mode_4 = (0
+ | ((esdmode2 & 0xFFFF) << 16)
+ | ((esdmode3 & 0xFFFF) << 0)
+ );
+ break;
+ case 2:
+ ddr->ddr_sdram_mode_6 = (0
+ | ((esdmode2 & 0xFFFF) << 16)
+ | ((esdmode3 & 0xFFFF) << 0)
+ );
+ break;
+ case 3:
+ ddr->ddr_sdram_mode_8 = (0
+ | ((esdmode2 & 0xFFFF) << 16)
+ | ((esdmode3 & 0xFFFF) << 0)
+ );
+ break;
+ }
+ }
+ debug("FSLDDR: ddr_sdram_mode_4 = 0x%08x\n",
+ ddr->ddr_sdram_mode_4);
+ debug("FSLDDR: ddr_sdram_mode_6 = 0x%08x\n",
+ ddr->ddr_sdram_mode_6);
+ debug("FSLDDR: ddr_sdram_mode_8 = 0x%08x\n",
+ ddr->ddr_sdram_mode_8);
+ }
+}
+#elif defined(CONFIG_SYS_FSL_DDR3)
+/* DDR SDRAM Mode configuration 2 (DDR_SDRAM_MODE_2) */
+static void set_ddr_sdram_mode_2(fsl_ddr_cfg_regs_t *ddr,
+ const memctl_options_t *popts,
+ const common_timing_params_t *common_dimm,
+ const unsigned int unq_mrs_en)
+{
+ unsigned short esdmode2 = 0; /* Extended SDRAM mode 2 */
+ unsigned short esdmode3 = 0; /* Extended SDRAM mode 3 */
int i;
unsigned int rtt_wr = 0; /* Rtt_WR - dynamic ODT off */
unsigned int srt = 0; /* self-refresh temerature, normal range */
@@ -799,14 +971,12 @@
| ((asr & 0x1) << 6)
| ((cwl & 0x7) << 3)
| ((pasr & 0x7) << 0));
-#endif
ddr->ddr_sdram_mode_2 = (0
| ((esdmode2 & 0xFFFF) << 16)
| ((esdmode3 & 0xFFFF) << 0)
);
debug("FSLDDR: ddr_sdram_mode_2 = 0x%08x\n", ddr->ddr_sdram_mode_2);
-#ifdef CONFIG_SYS_FSL_DDR3
if (unq_mrs_en) { /* unique mode registers are supported */
for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
if (popts->rtt_override)
@@ -844,9 +1014,128 @@
debug("FSLDDR: ddr_sdram_mode_8 = 0x%08x\n",
ddr->ddr_sdram_mode_8);
}
-#endif
}
+#else /* for DDR2 and DDR1 */
+/* DDR SDRAM Mode configuration 2 (DDR_SDRAM_MODE_2) */
+static void set_ddr_sdram_mode_2(fsl_ddr_cfg_regs_t *ddr,
+ const memctl_options_t *popts,
+ const common_timing_params_t *common_dimm,
+ const unsigned int unq_mrs_en)
+{
+ unsigned short esdmode2 = 0; /* Extended SDRAM mode 2 */
+ unsigned short esdmode3 = 0; /* Extended SDRAM mode 3 */
+
+ ddr->ddr_sdram_mode_2 = (0
+ | ((esdmode2 & 0xFFFF) << 16)
+ | ((esdmode3 & 0xFFFF) << 0)
+ );
+ debug("FSLDDR: ddr_sdram_mode_2 = 0x%08x\n", ddr->ddr_sdram_mode_2);
+}
+#endif
+
+#ifdef CONFIG_SYS_FSL_DDR4
+/* DDR SDRAM Mode configuration 9 (DDR_SDRAM_MODE_9) */
+static void set_ddr_sdram_mode_9(fsl_ddr_cfg_regs_t *ddr,
+ const memctl_options_t *popts,
+ const common_timing_params_t *common_dimm,
+ const unsigned int unq_mrs_en)
+{
+ int i;
+ unsigned short esdmode4 = 0; /* Extended SDRAM mode 4 */
+ unsigned short esdmode5; /* Extended SDRAM mode 5 */
+
+ esdmode5 = 0x00000400; /* Data mask enabled */
+
+ ddr->ddr_sdram_mode_9 = (0
+ | ((esdmode4 & 0xffff) << 16)
+ | ((esdmode5 & 0xffff) << 0)
+ );
+ debug("FSLDDR: ddr_sdram_mode_9) = 0x%08x\n", ddr->ddr_sdram_mode_9);
+ if (unq_mrs_en) { /* unique mode registers are supported */
+ for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
+ switch (i) {
+ case 1:
+ ddr->ddr_sdram_mode_11 = (0
+ | ((esdmode4 & 0xFFFF) << 16)
+ | ((esdmode5 & 0xFFFF) << 0)
+ );
+ break;
+ case 2:
+ ddr->ddr_sdram_mode_13 = (0
+ | ((esdmode4 & 0xFFFF) << 16)
+ | ((esdmode5 & 0xFFFF) << 0)
+ );
+ break;
+ case 3:
+ ddr->ddr_sdram_mode_15 = (0
+ | ((esdmode4 & 0xFFFF) << 16)
+ | ((esdmode5 & 0xFFFF) << 0)
+ );
+ break;
+ }
+ }
+ debug("FSLDDR: ddr_sdram_mode_11 = 0x%08x\n",
+ ddr->ddr_sdram_mode_11);
+ debug("FSLDDR: ddr_sdram_mode_13 = 0x%08x\n",
+ ddr->ddr_sdram_mode_13);
+ debug("FSLDDR: ddr_sdram_mode_15 = 0x%08x\n",
+ ddr->ddr_sdram_mode_15);
+ }
+}
+
+/* DDR SDRAM Mode configuration 10 (DDR_SDRAM_MODE_10) */
+static void set_ddr_sdram_mode_10(fsl_ddr_cfg_regs_t *ddr,
+ const memctl_options_t *popts,
+ const common_timing_params_t *common_dimm,
+ const unsigned int unq_mrs_en)
+{
+ int i;
+ unsigned short esdmode6 = 0; /* Extended SDRAM mode 6 */
+ unsigned short esdmode7 = 0; /* Extended SDRAM mode 7 */
+ unsigned int tccdl_min = picos_to_mclk(common_dimm->tccdl_ps);
+
+ esdmode6 = ((tccdl_min - 4) & 0x7) << 10;
+
+ ddr->ddr_sdram_mode_10 = (0
+ | ((esdmode6 & 0xffff) << 16)
+ | ((esdmode7 & 0xffff) << 0)
+ );
+ debug("FSLDDR: ddr_sdram_mode_10) = 0x%08x\n", ddr->ddr_sdram_mode_10);
+ if (unq_mrs_en) { /* unique mode registers are supported */
+ for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
+ switch (i) {
+ case 1:
+ ddr->ddr_sdram_mode_12 = (0
+ | ((esdmode6 & 0xFFFF) << 16)
+ | ((esdmode7 & 0xFFFF) << 0)
+ );
+ break;
+ case 2:
+ ddr->ddr_sdram_mode_14 = (0
+ | ((esdmode6 & 0xFFFF) << 16)
+ | ((esdmode7 & 0xFFFF) << 0)
+ );
+ break;
+ case 3:
+ ddr->ddr_sdram_mode_16 = (0
+ | ((esdmode6 & 0xFFFF) << 16)
+ | ((esdmode7 & 0xFFFF) << 0)
+ );
+ break;
+ }
+ }
+ debug("FSLDDR: ddr_sdram_mode_12 = 0x%08x\n",
+ ddr->ddr_sdram_mode_12);
+ debug("FSLDDR: ddr_sdram_mode_14 = 0x%08x\n",
+ ddr->ddr_sdram_mode_14);
+ debug("FSLDDR: ddr_sdram_mode_16 = 0x%08x\n",
+ ddr->ddr_sdram_mode_16);
+ }
+}
+
+#endif
+
/* DDR SDRAM Interval Configuration (DDR_SDRAM_INTERVAL) */
static void set_ddr_sdram_interval(fsl_ddr_cfg_regs_t *ddr,
const memctl_options_t *popts,
@@ -867,7 +1156,7 @@
debug("FSLDDR: ddr_sdram_interval = 0x%08x\n", ddr->ddr_sdram_interval);
}
-#if defined(CONFIG_SYS_FSL_DDR3)
+#ifdef CONFIG_SYS_FSL_DDR4
/* DDR SDRAM Mode configuration set (DDR_SDRAM_MODE) */
static void set_ddr_sdram_mode(fsl_ddr_cfg_regs_t *ddr,
const memctl_options_t *popts,
@@ -876,6 +1165,177 @@
unsigned int additive_latency,
const unsigned int unq_mrs_en)
{
+ int i;
+ unsigned short esdmode; /* Extended SDRAM mode */
+ unsigned short sdmode; /* SDRAM mode */
+
+ /* Mode Register - MR1 */
+ unsigned int qoff = 0; /* Output buffer enable 0=yes, 1=no */
+ unsigned int tdqs_en = 0; /* TDQS Enable: 0=no, 1=yes */
+ unsigned int rtt;
+ unsigned int wrlvl_en = 0; /* Write level enable: 0=no, 1=yes */
+ unsigned int al = 0; /* Posted CAS# additive latency (AL) */
+ unsigned int dic = 0; /* Output driver impedance, 40ohm */
+ unsigned int dll_en = 1; /* DLL Enable 1=Enable (Normal),
+ 0=Disable (Test/Debug) */
+
+ /* Mode Register - MR0 */
+ unsigned int wr = 0; /* Write Recovery */
+ unsigned int dll_rst; /* DLL Reset */
+ unsigned int mode; /* Normal=0 or Test=1 */
+ unsigned int caslat = 4;/* CAS# latency, default set as 6 cycles */
+ /* BT: Burst Type (0=Nibble Sequential, 1=Interleaved) */
+ unsigned int bt;
+ unsigned int bl; /* BL: Burst Length */
+
+ unsigned int wr_mclk;
+ /* DDR4 support WR 10, 12, 14, 16, 18, 20, 24 */
+ static const u8 wr_table[] = {
+ 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 6, 6};
+ /* DDR4 support CAS 9, 10, 11, 12, 13, 14, 15, 16, 18, 20, 22, 24 */
+ static const u8 cas_latency_table[] = {
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 8,
+ 9, 9, 10, 10, 11, 11};
+
+ if (popts->rtt_override)
+ rtt = popts->rtt_override_value;
+ else
+ rtt = popts->cs_local_opts[0].odt_rtt_norm;
+
+ if (additive_latency == (cas_latency - 1))
+ al = 1;
+ if (additive_latency == (cas_latency - 2))
+ al = 2;
+
+ if (popts->quad_rank_present)
+ dic = 1; /* output driver impedance 240/7 ohm */
+
+ /*
+ * The esdmode value will also be used for writing
+ * MR1 during write leveling for DDR3, although the
+ * bits specifically related to the write leveling
+ * scheme will be handled automatically by the DDR
+ * controller. so we set the wrlvl_en = 0 here.
+ */
+ esdmode = (0
+ | ((qoff & 0x1) << 12)
+ | ((tdqs_en & 0x1) << 11)
+ | ((rtt & 0x7) << 8)
+ | ((wrlvl_en & 0x1) << 7)
+ | ((al & 0x3) << 3)
+ | ((dic & 0x3) << 1) /* DIC field is split */
+ | ((dll_en & 0x1) << 0)
+ );
+
+ /*
+ * DLL control for precharge PD
+ * 0=slow exit DLL off (tXPDLL)
+ * 1=fast exit DLL on (tXP)
+ */
+
+ wr_mclk = picos_to_mclk(common_dimm->twr_ps);
+ if (wr_mclk <= 24) {
+ wr = wr_table[wr_mclk - 10];
+ } else {
+ printf("Error: unsupported write recovery for mode register wr_mclk = %d\n",
+ wr_mclk);
+ }
+
+ dll_rst = 0; /* dll no reset */
+ mode = 0; /* normal mode */
+
+ /* look up table to get the cas latency bits */
+ if (cas_latency >= 9 && cas_latency <= 24)
+ caslat = cas_latency_table[cas_latency - 9];
+ else
+ printf("Error: unsupported cas latency for mode register\n");
+
+ bt = 0; /* Nibble sequential */
+
+ switch (popts->burst_length) {
+ case DDR_BL8:
+ bl = 0;
+ break;
+ case DDR_OTF:
+ bl = 1;
+ break;
+ case DDR_BC4:
+ bl = 2;
+ break;
+ default:
+ printf("Error: invalid burst length of %u specified. ",
+ popts->burst_length);
+ puts("Defaulting to on-the-fly BC4 or BL8 beats.\n");
+ bl = 1;
+ break;
+ }
+
+ sdmode = (0
+ | ((wr & 0x7) << 9)
+ | ((dll_rst & 0x1) << 8)
+ | ((mode & 0x1) << 7)
+ | (((caslat >> 1) & 0x7) << 4)
+ | ((bt & 0x1) << 3)
+ | ((caslat & 1) << 2)
+ | ((bl & 0x3) << 0)
+ );
+
+ ddr->ddr_sdram_mode = (0
+ | ((esdmode & 0xFFFF) << 16)
+ | ((sdmode & 0xFFFF) << 0)
+ );
+
+ debug("FSLDDR: ddr_sdram_mode = 0x%08x\n", ddr->ddr_sdram_mode);
+
+ if (unq_mrs_en) { /* unique mode registers are supported */
+ for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
+ if (popts->rtt_override)
+ rtt = popts->rtt_override_value;
+ else
+ rtt = popts->cs_local_opts[i].odt_rtt_norm;
+
+ esdmode &= 0xF8FF; /* clear bit 10,9,8 for rtt */
+ esdmode |= (rtt & 0x7) << 8;
+ switch (i) {
+ case 1:
+ ddr->ddr_sdram_mode_3 = (0
+ | ((esdmode & 0xFFFF) << 16)
+ | ((sdmode & 0xFFFF) << 0)
+ );
+ break;
+ case 2:
+ ddr->ddr_sdram_mode_5 = (0
+ | ((esdmode & 0xFFFF) << 16)
+ | ((sdmode & 0xFFFF) << 0)
+ );
+ break;
+ case 3:
+ ddr->ddr_sdram_mode_7 = (0
+ | ((esdmode & 0xFFFF) << 16)
+ | ((sdmode & 0xFFFF) << 0)
+ );
+ break;
+ }
+ }
+ debug("FSLDDR: ddr_sdram_mode_3 = 0x%08x\n",
+ ddr->ddr_sdram_mode_3);
+ debug("FSLDDR: ddr_sdram_mode_5 = 0x%08x\n",
+ ddr->ddr_sdram_mode_5);
+ debug("FSLDDR: ddr_sdram_mode_5 = 0x%08x\n",
+ ddr->ddr_sdram_mode_5);
+ }
+}
+
+#elif defined(CONFIG_SYS_FSL_DDR3)
+/* DDR SDRAM Mode configuration set (DDR_SDRAM_MODE) */
+static void set_ddr_sdram_mode(fsl_ddr_cfg_regs_t *ddr,
+ const memctl_options_t *popts,
+ const common_timing_params_t *common_dimm,
+ unsigned int cas_latency,
+ unsigned int additive_latency,
+ const unsigned int unq_mrs_en)
+{
+ int i;
unsigned short esdmode; /* Extended SDRAM mode */
unsigned short sdmode; /* SDRAM mode */
@@ -907,9 +1367,6 @@
*/
static const u8 wr_table[] = {1, 2, 3, 4, 5, 5, 6, 6, 7, 7, 0, 0};
- const unsigned int mclk_ps = get_memory_clk_period_ps();
- int i;
-
if (popts->rtt_override)
rtt = popts->rtt_override_value;
else
@@ -950,7 +1407,7 @@
*/
dll_on = 1;
- wr_mclk = (common_dimm->twr_ps + mclk_ps - 1) / mclk_ps;
+ wr_mclk = picos_to_mclk(common_dimm->twr_ps);
if (wr_mclk <= 16) {
wr = wr_table[wr_mclk - 5];
} else {
@@ -1109,9 +1566,6 @@
unsigned int bt;
unsigned int bl; /* BL: Burst Length */
-#if defined(CONFIG_SYS_FSL_DDR2)
- const unsigned int mclk_ps = get_memory_clk_period_ps();
-#endif
dqs_en = !popts->dqs_config;
rtt = fsl_ddr_get_rtt();
@@ -1141,7 +1595,7 @@
#if defined(CONFIG_SYS_FSL_DDR1)
wr = 0; /* Historical */
#elif defined(CONFIG_SYS_FSL_DDR2)
- wr = (common_dimm->twr_ps + mclk_ps - 1) / mclk_ps - 1;
+ wr = picos_to_mclk(common_dimm->twr_ps);
#endif
dll_res = 0;
mode = 0;
@@ -1255,7 +1709,7 @@
unsigned int wwt = 0; /* Write-to-write turnaround for same CS */
unsigned int dll_lock = 0; /* DDR SDRAM DLL Lock Time */
-#if defined(CONFIG_SYS_FSL_DDR3)
+#if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4)
if (popts->burst_length == DDR_BL8) {
/* We set BL/2 for fixed BL8 */
rrt = 0; /* BL/2 clocks */
@@ -1265,6 +1719,11 @@
rrt = 2; /* BL/2 + 2 clocks */
wwt = 2; /* BL/2 + 2 clocks */
}
+#endif
+
+#ifdef CONFIG_SYS_FSL_DDR4
+ dll_lock = 2; /* tDLLK = 1024 clocks */
+#elif defined(CONFIG_SYS_FSL_DDR3)
dll_lock = 1; /* tDLLK = 512 clocks from spec */
#endif
ddr->timing_cfg_4 = (0
@@ -1285,9 +1744,12 @@
unsigned int wodt_on = 0; /* Write to ODT on */
unsigned int wodt_off = 0; /* Write to ODT off */
-#if defined(CONFIG_SYS_FSL_DDR3)
+#if defined(CONFIG_SYS_FSL_DDR3) || defined(CONFIG_SYS_FSL_DDR4)
+ unsigned int wr_lat = ((ddr->timing_cfg_2 & 0x00780000) >> 19) +
+ ((ddr->timing_cfg_2 & 0x00040000) >> 14);
/* rodt_on = timing_cfg_1[caslat] - timing_cfg_2[wrlat] + 1 */
- rodt_on = cas_latency - ((ddr->timing_cfg_2 & 0x00780000) >> 19) + 1;
+ if (cas_latency >= wr_lat)
+ rodt_on = cas_latency - wr_lat + 1;
rodt_off = 4; /* 4 clocks */
wodt_on = 1; /* 1 clocks */
wodt_off = 4; /* 4 clocks */
@@ -1302,6 +1764,164 @@
debug("FSLDDR: timing_cfg_5 = 0x%08x\n", ddr->timing_cfg_5);
}
+#ifdef CONFIG_SYS_FSL_DDR4
+static void set_timing_cfg_6(fsl_ddr_cfg_regs_t *ddr)
+{
+ unsigned int hs_caslat = 0;
+ unsigned int hs_wrlat = 0;
+ unsigned int hs_wrrec = 0;
+ unsigned int hs_clkadj = 0;
+ unsigned int hs_wrlvl_start = 0;
+
+ ddr->timing_cfg_6 = (0
+ | ((hs_caslat & 0x1f) << 24)
+ | ((hs_wrlat & 0x1f) << 19)
+ | ((hs_wrrec & 0x1f) << 12)
+ | ((hs_clkadj & 0x1f) << 6)
+ | ((hs_wrlvl_start & 0x1f) << 0)
+ );
+ debug("FSLDDR: timing_cfg_6 = 0x%08x\n", ddr->timing_cfg_6);
+}
+
+static void set_timing_cfg_7(fsl_ddr_cfg_regs_t *ddr,
+ const common_timing_params_t *common_dimm)
+{
+ unsigned int txpr, tcksre, tcksrx;
+ unsigned int cke_rst, cksre, cksrx, par_lat, cs_to_cmd;
+
+ txpr = max(5, picos_to_mclk(common_dimm->trfc1_ps + 10000));
+ tcksre = max(5, picos_to_mclk(10000));
+ tcksrx = max(5, picos_to_mclk(10000));
+ par_lat = 0;
+ cs_to_cmd = 0;
+
+ if (txpr <= 200)
+ cke_rst = 0;
+ else if (txpr <= 256)
+ cke_rst = 1;
+ else if (txpr <= 512)
+ cke_rst = 2;
+ else
+ cke_rst = 3;
+
+ if (tcksre <= 19)
+ cksre = tcksre - 5;
+ else
+ cksre = 15;
+
+ if (tcksrx <= 19)
+ cksrx = tcksrx - 5;
+ else
+ cksrx = 15;
+
+ ddr->timing_cfg_7 = (0
+ | ((cke_rst & 0x3) << 28)
+ | ((cksre & 0xf) << 24)
+ | ((cksrx & 0xf) << 20)
+ | ((par_lat & 0xf) << 16)
+ | ((cs_to_cmd & 0xf) << 4)
+ );
+ debug("FSLDDR: timing_cfg_7 = 0x%08x\n", ddr->timing_cfg_7);
+}
+
+static void set_timing_cfg_8(fsl_ddr_cfg_regs_t *ddr,
+ const memctl_options_t *popts,
+ const common_timing_params_t *common_dimm,
+ unsigned int cas_latency)
+{
+ unsigned int rwt_bg, wrt_bg, rrt_bg, wwt_bg;
+ unsigned int acttoact_bg, wrtord_bg, pre_all_rec;
+ unsigned int tccdl = picos_to_mclk(common_dimm->tccdl_ps);
+ unsigned int wr_lat = ((ddr->timing_cfg_2 & 0x00780000) >> 19) +
+ ((ddr->timing_cfg_2 & 0x00040000) >> 14);
+
+ rwt_bg = cas_latency + 2 + 4 - wr_lat;
+ if (rwt_bg < tccdl)
+ rwt_bg = tccdl - rwt_bg;
+ else
+ rwt_bg = 0;
+
+ wrt_bg = wr_lat + 4 + 1 - cas_latency;
+ if (wrt_bg < tccdl)
+ wrt_bg = tccdl - wrt_bg;
+ else
+ wrt_bg = 0;
+
+ if (popts->burst_length == DDR_BL8) {
+ rrt_bg = tccdl - 4;
+ wwt_bg = tccdl - 4;
+ } else {
+ rrt_bg = tccdl - 2;
+ wwt_bg = tccdl - 4;
+ }
+
+ acttoact_bg = picos_to_mclk(common_dimm->trrdl_ps);
+ wrtord_bg = max(4, picos_to_mclk(7500));
+ pre_all_rec = 0;
+
+ ddr->timing_cfg_8 = (0
+ | ((rwt_bg & 0xf) << 28)
+ | ((wrt_bg & 0xf) << 24)
+ | ((rrt_bg & 0xf) << 20)
+ | ((wwt_bg & 0xf) << 16)
+ | ((acttoact_bg & 0xf) << 12)
+ | ((wrtord_bg & 0xf) << 8)
+ | ((pre_all_rec & 0x1f) << 0)
+ );
+
+ debug("FSLDDR: timing_cfg_8 = 0x%08x\n", ddr->timing_cfg_8);
+}
+
+static void set_timing_cfg_9(fsl_ddr_cfg_regs_t *ddr)
+{
+ ddr->timing_cfg_9 = 0;
+ debug("FSLDDR: timing_cfg_9 = 0x%08x\n", ddr->timing_cfg_9);
+}
+
+static void set_ddr_dq_mapping(fsl_ddr_cfg_regs_t *ddr,
+ const dimm_params_t *dimm_params)
+{
+ ddr->dq_map_0 = ((dimm_params->dq_mapping[0] & 0x3F) << 26) |
+ ((dimm_params->dq_mapping[1] & 0x3F) << 20) |
+ ((dimm_params->dq_mapping[2] & 0x3F) << 14) |
+ ((dimm_params->dq_mapping[3] & 0x3F) << 8) |
+ ((dimm_params->dq_mapping[4] & 0x3F) << 2);
+
+ ddr->dq_map_1 = ((dimm_params->dq_mapping[5] & 0x3F) << 26) |
+ ((dimm_params->dq_mapping[6] & 0x3F) << 20) |
+ ((dimm_params->dq_mapping[7] & 0x3F) << 14) |
+ ((dimm_params->dq_mapping[10] & 0x3F) << 8) |
+ ((dimm_params->dq_mapping[11] & 0x3F) << 2);
+
+ ddr->dq_map_2 = ((dimm_params->dq_mapping[12] & 0x3F) << 26) |
+ ((dimm_params->dq_mapping[13] & 0x3F) << 20) |
+ ((dimm_params->dq_mapping[14] & 0x3F) << 14) |
+ ((dimm_params->dq_mapping[15] & 0x3F) << 8) |
+ ((dimm_params->dq_mapping[16] & 0x3F) << 2);
+
+ ddr->dq_map_3 = ((dimm_params->dq_mapping[17] & 0x3F) << 26) |
+ ((dimm_params->dq_mapping[8] & 0x3F) << 20) |
+ ((dimm_params->dq_mapping[9] & 0x3F) << 14) |
+ dimm_params->dq_mapping_ors;
+
+ debug("FSLDDR: dq_map_0 = 0x%08x\n", ddr->dq_map_0);
+ debug("FSLDDR: dq_map_1 = 0x%08x\n", ddr->dq_map_1);
+ debug("FSLDDR: dq_map_2 = 0x%08x\n", ddr->dq_map_2);
+ debug("FSLDDR: dq_map_3 = 0x%08x\n", ddr->dq_map_3);
+}
+static void set_ddr_sdram_cfg_3(fsl_ddr_cfg_regs_t *ddr,
+ const memctl_options_t *popts)
+{
+ int rd_pre;
+
+ rd_pre = popts->quad_rank_present ? 1 : 0;
+
+ ddr->ddr_sdram_cfg_3 = (rd_pre & 0x1) << 16;
+
+ debug("FSLDDR: ddr_sdram_cfg_3 = 0x%08x\n", ddr->ddr_sdram_cfg_3);
+}
+#endif /* CONFIG_SYS_FSL_DDR4 */
+
/* DDR ZQ Calibration Control (DDR_ZQ_CNTL) */
static void set_ddr_zq_cntl(fsl_ddr_cfg_regs_t *ddr, unsigned int zq_en)
{
@@ -1310,11 +1930,21 @@
unsigned int zqoper = 0;
/* Normal Operation Short Calibration Time (tZQCS) */
unsigned int zqcs = 0;
+#ifdef CONFIG_SYS_FSL_DDR4
+ unsigned int zqcs_init;
+#endif
if (zq_en) {
+#ifdef CONFIG_SYS_FSL_DDR4
+ zqinit = 10; /* 1024 clocks */
+ zqoper = 9; /* 512 clocks */
+ zqcs = 7; /* 128 clocks */
+ zqcs_init = 5; /* 1024 refresh sequences */
+#else
zqinit = 9; /* 512 clocks */
zqoper = 8; /* 256 clocks */
zqcs = 6; /* 64 clocks */
+#endif
}
ddr->ddr_zq_cntl = (0
@@ -1322,6 +1952,9 @@
| ((zqinit & 0xF) << 24)
| ((zqoper & 0xF) << 16)
| ((zqcs & 0xF) << 8)
+#ifdef CONFIG_SYS_FSL_DDR4
+ | ((zqcs_init & 0xF) << 0)
+#endif
);
debug("FSLDDR: zq_cntl = 0x%08x\n", ddr->ddr_zq_cntl);
}
@@ -1478,7 +2111,7 @@
*/
cas_latency = (popts->cas_latency_override)
? popts->cas_latency_override_value
- : common_dimm->lowest_common_SPD_caslat;
+ : common_dimm->lowest_common_spd_caslat;
additive_latency = (popts->additive_latency_override)
? popts->additive_latency_override_value
@@ -1639,6 +2272,10 @@
set_ddr_sdram_mode(ddr, popts, common_dimm,
cas_latency, additive_latency, unq_mrs_en);
set_ddr_sdram_mode_2(ddr, popts, common_dimm, unq_mrs_en);
+#ifdef CONFIG_SYS_FSL_DDR4
+ set_ddr_sdram_mode_9(ddr, popts, common_dimm, unq_mrs_en);
+ set_ddr_sdram_mode_10(ddr, popts, common_dimm, unq_mrs_en);
+#endif
set_ddr_sdram_interval(ddr, popts, common_dimm);
set_ddr_data_init(ddr);
set_ddr_sdram_clk_cntl(ddr, popts);
@@ -1646,6 +2283,14 @@
set_ddr_init_ext_addr(ddr);
set_timing_cfg_4(ddr, popts);
set_timing_cfg_5(ddr, cas_latency);
+#ifdef CONFIG_SYS_FSL_DDR4
+ set_ddr_sdram_cfg_3(ddr, popts);
+ set_timing_cfg_6(ddr);
+ set_timing_cfg_7(ddr, common_dimm);
+ set_timing_cfg_8(ddr, popts, common_dimm, cas_latency);
+ set_timing_cfg_9(ddr);
+ set_ddr_dq_mapping(ddr, dimm_params);
+#endif
set_ddr_zq_cntl(ddr, zq_en);
set_ddr_wrlvl_cntl(ddr, wrlvl_en, popts);