/*
- * Copyright 2008-2010 Freescale Semiconductor, Inc.
+ * Copyright 2008-2012 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.
+ * SPDX-License-Identifier: GPL-2.0+
*/
/*
#include "ddr.h"
-extern unsigned int picos_to_mclk(unsigned int picos);
+#define _DDR_ADDR CONFIG_SYS_MPC8xxx_DDR_ADDR
+
+static u32 fsl_ddr_get_version(void)
+{
+ ccsr_ddr_t *ddr;
+ u32 ver_major_minor_errata;
+
+ ddr = (void *)_DDR_ADDR;
+ ver_major_minor_errata = (in_be32(&ddr->ip_rev1) & 0xFFFF) << 8;
+ ver_major_minor_errata |= (in_be32(&ddr->ip_rev2) & 0xFF00) >> 8;
+
+ return ver_major_minor_errata;
+}
+
+unsigned int picos_to_mclk(unsigned int picos);
+
/*
* Determine Rtt value.
*
* 6 if 2.5ns > tCK >= 1.875ns
* 7 if 1.875ns > tCK >= 1.5ns
* 8 if 1.5ns > tCK >= 1.25ns
+ * 9 if 1.25ns > tCK >= 1.07ns
+ * 10 if 1.07ns > tCK >= 0.935ns
+ * 11 if 0.935ns > tCK >= 0.833ns
+ * 12 if 0.833ns > tCK >= 0.75ns
*/
static inline unsigned int compute_cas_write_latency(void)
{
cwl = 7;
else if (mclk_ps >= 1250)
cwl = 8;
- else
- cwl = 8;
+ else if (mclk_ps >= 1070)
+ cwl = 9;
+ else if (mclk_ps >= 935)
+ cwl = 10;
+ else if (mclk_ps >= 833)
+ cwl = 11;
+ else if (mclk_ps >= 750)
+ cwl = 12;
+ else {
+ cwl = 12;
+ printf("Warning: CWL is out of range\n");
+ }
return cwl;
}
if (dimm_params[dimm_number].n_ranks > 0) {
go_config = 1;
/* These fields only available in CS0_CONFIG */
- intlv_en = popts->memctl_interleaving;
- intlv_ctl = popts->memctl_interleaving_mode;
+ if (!popts->memctl_interleaving)
+ break;
+ switch (popts->memctl_interleaving_mode) {
+ case FSL_DDR_CACHE_LINE_INTERLEAVING:
+ case FSL_DDR_PAGE_INTERLEAVING:
+ case FSL_DDR_BANK_INTERLEAVING:
+ case FSL_DDR_SUPERBANK_INTERLEAVING:
+ intlv_en = popts->memctl_interleaving;
+ intlv_ctl = popts->memctl_interleaving_mode;
+ break;
+ default:
+ break;
+ }
}
break;
case 1:
break;
case 2:
if ((dimm_number == 0 && dimm_params[0].n_ranks > 2) || \
- (dimm_number > 1 && dimm_params[dimm_number].n_ranks > 0))
+ (dimm_number >= 1 && dimm_params[dimm_number].n_ranks > 0))
go_config = 1;
break;
case 3:
/* -3E = 667 CL5, -25 = CL6 800, -25E = CL5 800 */
#if !defined(CONFIG_FSL_DDR1)
+static inline int avoid_odt_overlap(const dimm_params_t *dimm_params)
+{
+#if CONFIG_DIMM_SLOTS_PER_CTLR == 1
+ if (dimm_params[0].n_ranks == 4)
+ return 1;
+#endif
+
+#if CONFIG_DIMM_SLOTS_PER_CTLR == 2
+ if ((dimm_params[0].n_ranks == 2) &&
+ (dimm_params[1].n_ranks == 2))
+ return 1;
+
+#ifdef CONFIG_FSL_DDR_FIRST_SLOT_QUAD_CAPABLE
+ if (dimm_params[0].n_ranks == 4)
+ return 1;
+#endif
+#endif
+ return 0;
+}
+
/*
* DDR SDRAM Timing Configuration 0 (TIMING_CFG_0)
*
* Avoid writing for DDR I. The new PQ38 DDR controller
* dreams up non-zero default values to be backwards compatible.
*/
-static void set_timing_cfg_0(fsl_ddr_cfg_regs_t *ddr)
+static void set_timing_cfg_0(fsl_ddr_cfg_regs_t *ddr,
+ const memctl_options_t *popts,
+ const dimm_params_t *dimm_params)
{
unsigned char trwt_mclk = 0; /* Read-to-write turnaround */
unsigned char twrt_mclk = 0; /* Write-to-read turnaround */
/* Mode register set cycle time (tMRD). */
unsigned char tmrd_mclk;
-#if defined(CONFIG_FSL_DDR3)
+#ifdef CONFIG_FSL_DDR3
/*
* (tXARD and tXARDS). Empirical?
* The DDR3 spec has not tXARD,
* tAXPD=1, need design to confirm.
*/
int tXP = max((get_memory_clk_period_ps() * 3), 7500); /* unit=ps */
- 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;
+ unsigned int data_rate = get_ddr_freq(0);
tmrd_mclk = 4;
/* set the turnaround time */
- trwt_mclk = 1;
+
+ /*
+ * for single quad-rank DIMM and two dual-rank DIMMs
+ * to avoid ODT overlap
+ */
+ if (avoid_odt_overlap(dimm_params)) {
+ twwt_mclk = 2;
+ trrt_mclk = 1;
+ }
+ /* for faster clock, need more time for data setup */
+ trwt_mclk = (data_rate/1000000 > 1800) ? 2 : 1;
+
+ if ((data_rate/1000000 > 1150) || (popts->memctl_interleaving))
+ twrt_mclk = 1;
+
+ if (popts->dynamic_power == 0) { /* powerdown is not used */
+ act_pd_exit_mclk = 1;
+ pre_pd_exit_mclk = 1;
+ taxpd_mclk = 1;
+ } else {
+ /* act_pd_exit_mclk = tXARD, see above */
+ 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;
+ }
#else /* CONFIG_FSL_DDR2 */
/*
* (tXARD and tXARDS). Empirical?
tmrd_mclk = 2;
#endif
+ if (popts->trwt_override)
+ trwt_mclk = popts->trwt;
+
ddr->timing_cfg_0 = (0
| ((trwt_mclk & 0x3) << 30) /* RWT */
| ((twrt_mclk & 0x3) << 28) /* WRT */
/* DDR SDRAM Timing Configuration 3 (TIMING_CFG_3) */
static void set_timing_cfg_3(fsl_ddr_cfg_regs_t *ddr,
+ const memctl_options_t *popts,
const common_timing_params_t *common_dimm,
unsigned int cas_latency)
{
+ /* Extended precharge to activate interval (tRP) */
+ unsigned int ext_pretoact = 0;
/* Extended Activate to precharge interval (tRAS) */
unsigned int ext_acttopre = 0;
- unsigned int ext_refrec; /* Extended refresh recovery time (tRFC) */
- unsigned int ext_caslat = 0; /* Extended MCAS latency from READ cmd */
- unsigned int cntl_adj = 0; /* Control Adjust */
-
- /* If the tRAS > 19 MCLK, we use the ext mode */
- if (picos_to_mclk(common_dimm->tRAS_ps) > 0x13)
- ext_acttopre = 1;
-
+ /* Extended activate to read/write interval (tRCD) */
+ unsigned int ext_acttorw = 0;
+ /* Extended refresh recovery time (tRFC) */
+ unsigned int ext_refrec;
+ /* Extended MCAS latency from READ cmd */
+ unsigned int ext_caslat = 0;
+ /* Extended last data to precharge interval (tWR) */
+ unsigned int ext_wrrec = 0;
+ /* Control Adjust */
+ unsigned int cntl_adj = 0;
+
+ ext_pretoact = picos_to_mclk(common_dimm->tRP_ps) >> 4;
+ ext_acttopre = picos_to_mclk(common_dimm->tRAS_ps) >> 4;
+ ext_acttorw = picos_to_mclk(common_dimm->tRCD_ps) >> 4;
+ ext_caslat = (2 * cas_latency - 1) >> 4;
ext_refrec = (picos_to_mclk(common_dimm->tRFC_ps) - 8) >> 4;
-
- /* If the CAS latency more than 8, use the ext mode */
- if (cas_latency > 8)
- ext_caslat = 1;
+ /* ext_wrrec only deals with 16 clock and above, or 14 with OTF */
+ ext_wrrec = (picos_to_mclk(common_dimm->tWR_ps) +
+ (popts->OTF_burst_chop_en ? 2 : 0)) >> 4;
ddr->timing_cfg_3 = (0
- | ((ext_acttopre & 0x1) << 24)
- | ((ext_refrec & 0xF) << 16)
- | ((ext_caslat & 0x1) << 12)
+ | ((ext_pretoact & 0x1) << 28)
+ | ((ext_acttopre & 0x3) << 24)
+ | ((ext_acttorw & 0x1) << 22)
+ | ((ext_refrec & 0x1F) << 16)
+ | ((ext_caslat & 0x3) << 12)
+ | ((ext_wrrec & 0x1) << 8)
| ((cntl_adj & 0x7) << 0)
);
debug("FSLDDR: timing_cfg_3 = 0x%08x\n", ddr->timing_cfg_3);
unsigned char acttoact_mclk;
/* Last write data pair to read command issue interval (tWTR) */
unsigned char wrtord_mclk;
+ /* 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};
pretoact_mclk = picos_to_mclk(common_dimm->tRP_ps);
acttopre_mclk = picos_to_mclk(common_dimm->tRAS_ps);
* we need set extend bit for it at
* TIMING_CFG_3[EXT_CASLAT]
*/
- if (cas_latency > 8)
- cas_latency -= 8;
caslat_ctrl = 2 * cas_latency - 1;
#endif
refrec_ctrl = picos_to_mclk(common_dimm->tRFC_ps) - 8;
wrrec_mclk = picos_to_mclk(common_dimm->tWR_ps);
+
+ if (wrrec_mclk > 16)
+ printf("Error: WRREC doesn't support more than 16 clocks\n");
+ else
+ wrrec_mclk = wrrec_table[wrrec_mclk - 1];
if (popts->OTF_burst_chop_en)
wrrec_mclk += 2;
| ((caslat_ctrl & 0xF) << 16)
| ((refrec_ctrl & 0xF) << 12)
| ((wrrec_mclk & 0x0F) << 8)
- | ((acttoact_mclk & 0x07) << 4)
- | ((wrtord_mclk & 0x07) << 0)
+ | ((acttoact_mclk & 0x0F) << 4)
+ | ((wrtord_mclk & 0x0F) << 0)
);
debug("FSLDDR: timing_cfg_1 = 0x%08x\n", ddr->timing_cfg_1);
}
/* DDR SDRAM Register Control Word */
static void set_ddr_sdram_rcw(fsl_ddr_cfg_regs_t *ddr,
+ const memctl_options_t *popts,
const common_timing_params_t *common_dimm)
{
if (common_dimm->all_DIMMs_registered
&& !common_dimm->all_DIMMs_unbuffered) {
- ddr->ddr_sdram_rcw_1 =
- common_dimm->rcw[0] << 28 | \
- common_dimm->rcw[1] << 24 | \
- common_dimm->rcw[2] << 20 | \
- common_dimm->rcw[3] << 16 | \
- common_dimm->rcw[4] << 12 | \
- common_dimm->rcw[5] << 8 | \
- common_dimm->rcw[6] << 4 | \
- common_dimm->rcw[7];
- ddr->ddr_sdram_rcw_2 =
- common_dimm->rcw[8] << 28 | \
- common_dimm->rcw[9] << 24 | \
- common_dimm->rcw[10] << 20 | \
- common_dimm->rcw[11] << 16 | \
- common_dimm->rcw[12] << 12 | \
- common_dimm->rcw[13] << 8 | \
- common_dimm->rcw[14] << 4 | \
- common_dimm->rcw[15];
+ if (popts->rcw_override) {
+ ddr->ddr_sdram_rcw_1 = popts->rcw_1;
+ ddr->ddr_sdram_rcw_2 = popts->rcw_2;
+ } else {
+ ddr->ddr_sdram_rcw_1 =
+ common_dimm->rcw[0] << 28 | \
+ common_dimm->rcw[1] << 24 | \
+ common_dimm->rcw[2] << 20 | \
+ common_dimm->rcw[3] << 16 | \
+ common_dimm->rcw[4] << 12 | \
+ common_dimm->rcw[5] << 8 | \
+ common_dimm->rcw[6] << 4 | \
+ common_dimm->rcw[7];
+ ddr->ddr_sdram_rcw_2 =
+ common_dimm->rcw[8] << 28 | \
+ common_dimm->rcw[9] << 24 | \
+ common_dimm->rcw[10] << 20 | \
+ common_dimm->rcw[11] << 16 | \
+ common_dimm->rcw[12] << 12 | \
+ common_dimm->rcw[13] << 8 | \
+ common_dimm->rcw[14] << 4 | \
+ common_dimm->rcw[15];
+ }
debug("FSLDDR: ddr_sdram_rcw_1 = 0x%08x\n", ddr->ddr_sdram_rcw_1);
debug("FSLDDR: ddr_sdram_rcw_2 = 0x%08x\n", ddr->ddr_sdram_rcw_2);
}
ecc_en = 0;
}
- rd_en = (common_dimm->all_DIMMs_registered
- && !common_dimm->all_DIMMs_unbuffered);
+ if (common_dimm->all_DIMMs_registered
+ && !common_dimm->all_DIMMs_unbuffered) {
+ rd_en = 1;
+ twoT_en = 0;
+ } else {
+ rd_en = 0;
+ twoT_en = popts->twoT_en;
+ }
sdram_type = CONFIG_FSL_SDRAM_TYPE;
}
threeT_en = popts->threeT_en;
- twoT_en = popts->twoT_en;
ba_intlv_ctl = popts->ba_intlv_ctl;
hse = popts->half_strength_driver_enable;
/* DDR SDRAM control configuration 2 (DDR_SDRAM_CFG_2) */
static void set_ddr_sdram_cfg_2(fsl_ddr_cfg_regs_t *ddr,
- const memctl_options_t *popts)
+ const memctl_options_t *popts,
+ const unsigned int unq_mrs_en)
{
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; /* ODT 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 */
+ unsigned int x4_en = 0; /* x4 DRAM enable */
unsigned int obc_cfg; /* On-The-Fly Burst Chop Cfg */
unsigned int ap_en; /* Address Parity Enable */
unsigned int d_init; /* DRAM data initialization */
unsigned int rcw_en = 0; /* Register Control Word Enable */
unsigned int md_en = 0; /* Mirrored DIMM Enable */
unsigned int qd_en = 0; /* quad-rank DIMM Enable */
+ int i;
dll_rst_dis = 1; /* Make this configurable */
dqs_cfg = popts->DQS_config;
- if (popts->cs_local_opts[0].odt_rd_cfg
- || popts->cs_local_opts[0].odt_wr_cfg) {
- /* FIXME */
- odt_cfg = 2;
- } else {
- odt_cfg = 0;
+ 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) {
+ odt_cfg = SDRAM_CFG2_ODT_ONLY_READ;
+ break;
+ }
}
num_pr = 1; /* Make this configurable */
obc_cfg = 0;
#endif
- ap_en = 0; /* Make this configurable? */
+#if (CONFIG_SYS_FSL_DDR_VER >= FSL_DDR_VER_4_7)
+ slow = get_ddr_freq(0) < 1249000000;
+#endif
+
+ if (popts->registered_dimm_en) {
+ rcw_en = 1;
+ ap_en = popts->ap_en;
+ } else {
+ ap_en = 0;
+ }
+
+ x4_en = popts->x4_en ? 1 : 0;
#if defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
/* Use the DDR controller to auto initialize memory. */
- d_init = 1;
+ d_init = popts->ECC_init_using_memctl;
ddr->ddr_data_init = CONFIG_MEM_INIT_VALUE;
debug("DDR: ddr_data_init = 0x%08x\n", ddr->ddr_data_init);
#else
#if defined(CONFIG_FSL_DDR3)
md_en = popts->mirrored_dimm;
#endif
- rcw_en = popts->registered_dimm_en;
qd_en = popts->quad_rank_present ? 1 : 0;
ddr->ddr_sdram_cfg_2 = (0
| ((frc_sr & 0x1) << 31)
| ((dqs_cfg & 0x3) << 26)
| ((odt_cfg & 0x3) << 21)
| ((num_pr & 0xf) << 12)
+ | ((slow & 1) << 11)
+ | (x4_en << 10)
| (qd_en << 9)
+ | (unq_mrs_en << 8)
| ((obc_cfg & 0x1) << 6)
| ((ap_en & 0x1) << 5)
| ((d_init & 0x1) << 4)
/* 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 memctl_options_t *popts,
+ const unsigned int unq_mrs_en)
{
unsigned short esdmode2 = 0; /* Extended SDRAM mode 2 */
unsigned short esdmode3 = 0; /* Extended SDRAM mode 3 */
#if defined(CONFIG_FSL_DDR3)
+ int i;
unsigned int rtt_wr = 0; /* Rtt_WR - dynamic ODT off */
unsigned int srt = 0; /* self-refresh temerature, normal range */
unsigned int asr = 0; /* auto self-refresh disable */
if (popts->rtt_override)
rtt_wr = popts->rtt_wr_override_value;
-
+ else
+ rtt_wr = popts->cs_local_opts[0].odt_rtt_wr;
esdmode2 = (0
| ((rtt_wr & 0x3) << 9)
| ((srt & 0x1) << 7)
| ((esdmode3 & 0xFFFF) << 0)
);
debug("FSLDDR: ddr_sdram_mode_2 = 0x%08x\n", ddr->ddr_sdram_mode_2);
+
+#ifdef CONFIG_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)
+ 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);
+ }
+#endif
}
/* DDR SDRAM Interval Configuration (DDR_SDRAM_INTERVAL) */
const memctl_options_t *popts,
const common_timing_params_t *common_dimm,
unsigned int cas_latency,
- unsigned int additive_latency)
+ unsigned int additive_latency,
+ const unsigned int unq_mrs_en)
{
unsigned short esdmode; /* Extended SDRAM mode */
unsigned short sdmode; /* SDRAM mode */
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 = 1; /* Output driver impedance, 34ohm */
+ unsigned int dic = 0; /* Output driver impedance, 40ohm */
unsigned int dll_en = 0; /* DLL Enable 0=Enable (Normal),
1=Disable (Test/Debug) */
/* Mode Register - MR0 */
unsigned int dll_on; /* DLL control for precharge PD, 0=off, 1=on */
- unsigned int wr; /* Write Recovery */
+ 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 */
unsigned int bl; /* BL: Burst Length */
unsigned int wr_mclk;
+ /*
+ * DDR_SDRAM_MODE doesn't support 9,11,13,15
+ * Please refer JEDEC Standard No. 79-3E for Mode Register MR0
+ * for this table
+ */
+ 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;
- rtt = fsl_ddr_get_rtt();
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
* 1=fast exit DLL on (tXP)
*/
dll_on = 1;
+
wr_mclk = (common_dimm->tWR_ps + mclk_ps - 1) / mclk_ps;
- if (wr_mclk >= 12)
- wr = 6;
- else if (wr_mclk >= 9)
- wr = 5;
- else
- wr = wr_mclk - 4;
+ if (wr_mclk <= 16) {
+ wr = wr_table[wr_mclk - 5];
+ } 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 >= 5 && cas_latency <= 11) {
- unsigned char cas_latency_table[7] = {
+ if (cas_latency >= 5 && cas_latency <= 16) {
+ unsigned char cas_latency_table[] = {
0x2, /* 5 clocks */
0x4, /* 6 clocks */
0x6, /* 7 clocks */
0x8, /* 8 clocks */
0xa, /* 9 clocks */
0xc, /* 10 clocks */
- 0xe /* 11 clocks */
+ 0xe, /* 11 clocks */
+ 0x1, /* 12 clocks */
+ 0x3, /* 13 clocks */
+ 0x5, /* 14 clocks */
+ 0x7, /* 15 clocks */
+ 0x9, /* 16 clocks */
};
caslat = cas_latency_table[cas_latency - 5];
+ } else {
+ printf("Error: unsupported cas latency for mode register\n");
}
+
bt = 0; /* Nibble sequential */
switch (popts->burst_length) {
| ((mode & 0x1) << 7)
| (((caslat >> 1) & 0x7) << 4)
| ((bt & 0x1) << 3)
+ | ((caslat & 1) << 2)
| ((bl & 0x3) << 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 &= 0xFDBB; /* clear bit 9,6,2 */
+ esdmode |= (0
+ | ((rtt & 0x4) << 7) /* rtt field is split */
+ | ((rtt & 0x2) << 5) /* rtt field is split */
+ | ((rtt & 0x1) << 2) /* rtt field is split */
+ );
+ 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);
+ }
}
#else /* !CONFIG_FSL_DDR3 */
const memctl_options_t *popts,
const common_timing_params_t *common_dimm,
unsigned int cas_latency,
- unsigned int additive_latency)
+ unsigned int additive_latency,
+ const unsigned int unq_mrs_en)
{
unsigned short esdmode; /* Extended SDRAM mode */
unsigned short sdmode; /* SDRAM mode */
#if defined(CONFIG_FSL_DDR2)
const unsigned int mclk_ps = get_memory_clk_period_ps();
#endif
-
+ dqs_en = !popts->DQS_config;
rtt = fsl_ddr_get_rtt();
al = additive_latency;
{
unsigned int init_value; /* Initialization value */
+#ifdef CONFIG_MEM_INIT_VALUE
+ init_value = CONFIG_MEM_INIT_VALUE;
+#else
init_value = 0xDEADBEEF;
+#endif
ddr->ddr_data_init = init_value;
}
}
/* DDR SDRAM Timing Configuration 5 (TIMING_CFG_5) */
-static void set_timing_cfg_5(fsl_ddr_cfg_regs_t *ddr)
+static void set_timing_cfg_5(fsl_ddr_cfg_regs_t *ddr, unsigned int cas_latency)
{
unsigned int rodt_on = 0; /* Read to ODT on */
unsigned int rodt_off = 0; /* Read to ODT off */
unsigned int wodt_off = 0; /* Write to ODT off */
#if defined(CONFIG_FSL_DDR3)
- rodt_on = 2; /* 2 clocks */
+ /* rodt_on = timing_cfg_1[caslat] - timing_cfg_2[wrlat] + 1 */
+ rodt_on = cas_latency - ((ddr->timing_cfg_2 & 0x00780000) >> 19) + 1;
rodt_off = 4; /* 4 clocks */
wodt_on = 1; /* 1 clocks */
wodt_off = 4; /* 4 clocks */
| ((zqoper & 0xF) << 16)
| ((zqcs & 0xF) << 8)
);
+ debug("FSLDDR: zq_cntl = 0x%08x\n", ddr->ddr_zq_cntl);
}
/* DDR Write Leveling Control (DDR_WRLVL_CNTL) */
/*
* Write leveling start time
* The value use for the DQS_ADJUST for the first sample
- * when write leveling is enabled.
+ * when write leveling is enabled. It probably needs to be
+ * overriden per platform.
*/
wrlvl_start = 0x8;
/*
| ((wrlvl_wlr & 0x7) << 8)
| ((wrlvl_start & 0x1F) << 0)
);
+ debug("FSLDDR: wrlvl_cntl = 0x%08x\n", ddr->ddr_wrlvl_cntl);
+ ddr->ddr_wrlvl_cntl_2 = popts->wrlvl_ctl_2;
+ debug("FSLDDR: wrlvl_cntl_2 = 0x%08x\n", ddr->ddr_wrlvl_cntl_2);
+ ddr->ddr_wrlvl_cntl_3 = popts->wrlvl_ctl_3;
+ debug("FSLDDR: wrlvl_cntl_3 = 0x%08x\n", ddr->ddr_wrlvl_cntl_3);
+
}
/* DDR Self Refresh Counter (DDR_SR_CNTR) */
{
if (popts->addr_hash) {
ddr->ddr_eor = 0x40000000; /* address hash enable */
- puts("Addess hashing enabled.\n");
+ puts("Address hashing enabled.\n");
}
}
+static void set_ddr_cdr1(fsl_ddr_cfg_regs_t *ddr, const memctl_options_t *popts)
+{
+ ddr->ddr_cdr1 = popts->ddr_cdr1;
+ debug("FSLDDR: ddr_cdr1 = 0x%08x\n", ddr->ddr_cdr1);
+}
+
+static void set_ddr_cdr2(fsl_ddr_cfg_regs_t *ddr, const memctl_options_t *popts)
+{
+ ddr->ddr_cdr2 = popts->ddr_cdr2;
+ debug("FSLDDR: ddr_cdr2 = 0x%08x\n", ddr->ddr_cdr2);
+}
+
unsigned int
check_fsl_memctl_config_regs(const fsl_ddr_cfg_regs_t *ddr)
{
fsl_ddr_cfg_regs_t *ddr,
const common_timing_params_t *common_dimm,
const dimm_params_t *dimm_params,
- unsigned int dbw_cap_adj)
+ unsigned int dbw_cap_adj,
+ unsigned int size_only)
{
unsigned int i;
unsigned int cas_latency;
unsigned int sr_it;
unsigned int zq_en;
unsigned int wrlvl_en;
+ unsigned int ip_rev = 0;
+ unsigned int unq_mrs_en = 0;
int cs_en = 1;
memset(ddr, 0, sizeof(fsl_ddr_cfg_regs_t));
/* Chip Select Memory Bounds (CSn_BNDS) */
for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
- unsigned long long ea = 0, sa = 0;
+ unsigned long long ea, sa;
unsigned int cs_per_dimm
= CONFIG_CHIP_SELECTS_PER_CTRL / CONFIG_DIMM_SLOTS_PER_CTLR;
unsigned int dimm_number
= i / cs_per_dimm;
unsigned long long rank_density
- = dimm_params[dimm_number].rank_density;
+ = dimm_params[dimm_number].rank_density >> dbw_cap_adj;
- if (((i == 1) && (popts->ba_intlv_ctl & FSL_DDR_CS0_CS1)) ||
- ((i == 2) && (popts->ba_intlv_ctl & 0x04)) ||
- ((i == 3) && (popts->ba_intlv_ctl & FSL_DDR_CS2_CS3))) {
- /*
- * Don't set up boundaries for unused CS
- * cs1 for cs0_cs1, cs0_cs1_and_cs2_cs3, cs0_cs1_cs2_cs3
- * cs2 for cs0_cs1_cs2_cs3
- * cs3 for cs2_cs3, cs0_cs1_and_cs2_cs3, cs0_cs1_cs2_cs3
- * But we need to set the ODT_RD_CFG and
- * ODT_WR_CFG for CS1_CONFIG here.
- */
- set_csn_config(dimm_number, i, ddr, popts, dimm_params);
- continue;
- }
if (dimm_params[dimm_number].n_ranks == 0) {
debug("Skipping setup of CS%u "
"because n_ranks on DIMM %u is 0\n", i, dimm_number);
continue;
}
- if (popts->memctl_interleaving && popts->ba_intlv_ctl) {
- /*
- * This works superbank 2CS
- * There are 2 or more memory controllers configured
- * identically, memory is interleaved between them,
- * and each controller uses rank interleaving within
- * itself. Therefore the starting and ending address
- * on each controller is twice the amount present on
- * each controller. If any CS is not included in the
- * interleaving, the memory on that CS is not accssible
- * and the total memory size is reduced. The CS is also
- * disabled.
- */
- unsigned long long ctlr_density = 0;
+ if (popts->memctl_interleaving) {
switch (popts->ba_intlv_ctl & FSL_DDR_CS0_CS1_CS2_CS3) {
+ case FSL_DDR_CS0_CS1_CS2_CS3:
+ break;
case FSL_DDR_CS0_CS1:
case FSL_DDR_CS0_CS1_AND_CS2_CS3:
- ctlr_density = dimm_params[0].rank_density * 2;
if (i > 1)
cs_en = 0;
break;
case FSL_DDR_CS2_CS3:
- ctlr_density = dimm_params[0].rank_density;
+ default:
if (i > 0)
cs_en = 0;
break;
- case FSL_DDR_CS0_CS1_CS2_CS3:
- /*
- * The four CS interleaving should have been verified by
- * populate_memctl_options()
- */
- ctlr_density = dimm_params[0].rank_density * 4;
- break;
- default:
- break;
}
- ea = (CONFIG_NUM_DDR_CONTROLLERS *
- (ctlr_density >> dbw_cap_adj)) - 1;
- }
- else if (!popts->memctl_interleaving && popts->ba_intlv_ctl) {
+ sa = common_dimm->base_address;
+ ea = sa + common_dimm->total_mem - 1;
+ } else if (!popts->memctl_interleaving) {
/*
* If memory interleaving between controllers is NOT
* enabled, the starting address for each memory
*/
switch (popts->ba_intlv_ctl & FSL_DDR_CS0_CS1_CS2_CS3) {
case FSL_DDR_CS0_CS1_CS2_CS3:
- /* CS0+CS1+CS2+CS3 interleaving, only CS0_CNDS
- * needs to be set.
- */
sa = common_dimm->base_address;
- ea = sa + (4 * (rank_density >> dbw_cap_adj))-1;
+ ea = sa + common_dimm->total_mem - 1;
break;
case FSL_DDR_CS0_CS1_AND_CS2_CS3:
- /* CS0+CS1 and CS2+CS3 interleaving, CS0_CNDS
- * and CS2_CNDS need to be set.
- */
- if ((i == 2) && (dimm_number == 0)) {
+ if ((i >= 2) && (dimm_number == 0)) {
sa = dimm_params[dimm_number].base_address +
- 2 * (rank_density >> dbw_cap_adj);
- ea = sa + 2 * (rank_density >> dbw_cap_adj) - 1;
+ 2 * rank_density;
+ ea = sa + 2 * rank_density - 1;
} else {
sa = dimm_params[dimm_number].base_address;
- ea = sa + (2 * (rank_density >>
- dbw_cap_adj)) - 1;
+ ea = sa + 2 * rank_density - 1;
}
break;
case FSL_DDR_CS0_CS1:
- /* CS0+CS1 interleaving, CS0_CNDS needs
- * to be set
- */
if (dimm_params[dimm_number].n_ranks > (i % cs_per_dimm)) {
sa = dimm_params[dimm_number].base_address;
- ea = sa + (rank_density >> dbw_cap_adj) - 1;
- sa += (i % cs_per_dimm) * (rank_density >> dbw_cap_adj);
- ea += (i % cs_per_dimm) * (rank_density >> dbw_cap_adj);
+ ea = sa + rank_density - 1;
+ if (i != 1)
+ sa += (i % cs_per_dimm) * rank_density;
+ ea += (i % cs_per_dimm) * rank_density;
} else {
sa = 0;
ea = 0;
}
if (i == 0)
- ea += (rank_density >> dbw_cap_adj);
+ ea += rank_density;
break;
case FSL_DDR_CS2_CS3:
- /* CS2+CS3 interleaving*/
if (dimm_params[dimm_number].n_ranks > (i % cs_per_dimm)) {
sa = dimm_params[dimm_number].base_address;
- ea = sa + (rank_density >> dbw_cap_adj) - 1;
- sa += (i % cs_per_dimm) * (rank_density >> dbw_cap_adj);
- ea += (i % cs_per_dimm) * (rank_density >> dbw_cap_adj);
+ ea = sa + rank_density - 1;
+ if (i != 3)
+ sa += (i % cs_per_dimm) * rank_density;
+ ea += (i % cs_per_dimm) * rank_density;
} else {
sa = 0;
ea = 0;
ea += (rank_density >> dbw_cap_adj);
break;
default: /* No bank(chip-select) interleaving */
+ sa = dimm_params[dimm_number].base_address;
+ ea = sa + rank_density - 1;
+ if (dimm_params[dimm_number].n_ranks > (i % cs_per_dimm)) {
+ sa += (i % cs_per_dimm) * rank_density;
+ ea += (i % cs_per_dimm) * rank_density;
+ } else {
+ sa = 0;
+ ea = 0;
+ }
break;
}
}
- else if (popts->memctl_interleaving && !popts->ba_intlv_ctl) {
- /*
- * Only the rank on CS0 of each memory controller may
- * be used if memory controller interleaving is used
- * without rank interleaving within each memory
- * controller. However, the ending address programmed
- * into each CS0 must be the sum of the amount of
- * memory in the two CS0 ranks.
- */
- if (i == 0) {
- ea = (2 * (rank_density >> dbw_cap_adj)) - 1;
- }
-
- }
- else if (!popts->memctl_interleaving && !popts->ba_intlv_ctl) {
- /*
- * No rank interleaving and no memory controller
- * interleaving.
- */
- sa = dimm_params[dimm_number].base_address;
- ea = sa + (rank_density >> dbw_cap_adj) - 1;
- if (dimm_params[dimm_number].n_ranks > (i % cs_per_dimm)) {
- sa += (i % cs_per_dimm) * (rank_density >> dbw_cap_adj);
- ea += (i % cs_per_dimm) * (rank_density >> dbw_cap_adj);
- } else {
- sa = 0;
- ea = 0;
- }
- }
sa >>= 24;
ea >>= 24;
- ddr->cs[i].bnds = (0
- | ((sa & 0xFFF) << 16) /* starting address MSB */
- | ((ea & 0xFFF) << 0) /* ending address MSB */
- );
+ if (cs_en) {
+ ddr->cs[i].bnds = (0
+ | ((sa & 0xFFF) << 16)/* starting address MSB */
+ | ((ea & 0xFFF) << 0) /* ending address MSB */
+ );
+ } else {
+ /* setting bnds to 0xffffffff for inactive CS */
+ ddr->cs[i].bnds = 0xffffffff;
+ }
debug("FSLDDR: cs[%d]_bnds = 0x%08x\n", i, ddr->cs[i].bnds);
- if (cs_en) {
- set_csn_config(dimm_number, i, ddr, popts, dimm_params);
- set_csn_config_2(i, ddr);
- } else
- printf("CS%d is disabled.\n", i);
+ set_csn_config(dimm_number, i, ddr, popts, dimm_params);
+ set_csn_config_2(i, ddr);
}
+ /*
+ * In the case we only need to compute the ddr sdram size, we only need
+ * to set csn registers, so return from here.
+ */
+ if (size_only)
+ return 0;
+
set_ddr_eor(ddr, popts);
#if !defined(CONFIG_FSL_DDR1)
- set_timing_cfg_0(ddr);
+ set_timing_cfg_0(ddr, popts, dimm_params);
#endif
- set_timing_cfg_3(ddr, common_dimm, cas_latency);
+ set_timing_cfg_3(ddr, popts, common_dimm, cas_latency);
set_timing_cfg_1(ddr, popts, common_dimm, cas_latency);
set_timing_cfg_2(ddr, popts, common_dimm,
cas_latency, additive_latency);
+ set_ddr_cdr1(ddr, popts);
+ set_ddr_cdr2(ddr, popts);
set_ddr_sdram_cfg(ddr, popts, common_dimm);
+ ip_rev = fsl_ddr_get_version();
+ if (ip_rev > 0x40400)
+ unq_mrs_en = 1;
- set_ddr_sdram_cfg_2(ddr, popts);
+ set_ddr_sdram_cfg_2(ddr, popts, unq_mrs_en);
set_ddr_sdram_mode(ddr, popts, common_dimm,
- cas_latency, additive_latency);
- set_ddr_sdram_mode_2(ddr, popts);
+ cas_latency, additive_latency, unq_mrs_en);
+ set_ddr_sdram_mode_2(ddr, popts, unq_mrs_en);
set_ddr_sdram_interval(ddr, popts, common_dimm);
set_ddr_data_init(ddr);
set_ddr_sdram_clk_cntl(ddr, popts);
set_ddr_init_addr(ddr);
set_ddr_init_ext_addr(ddr);
set_timing_cfg_4(ddr, popts);
- set_timing_cfg_5(ddr);
+ set_timing_cfg_5(ddr, cas_latency);
set_ddr_zq_cntl(ddr, zq_en);
set_ddr_wrlvl_cntl(ddr, wrlvl_en, popts);
set_ddr_sr_cntr(ddr, sr_it);
- set_ddr_sdram_rcw(ddr, common_dimm);
+ set_ddr_sdram_rcw(ddr, popts, common_dimm);
+#ifdef CONFIG_SYS_FSL_DDR_EMU
+ /* disble DDR training for emulator */
+ ddr->debug[2] = 0x00000400;
+ ddr->debug[4] = 0xff800000;
+#endif
return check_fsl_memctl_config_regs(ddr);
}
projects / u-boot / blobdiff