summaryrefslogtreecommitdiff
path: root/cpu/mpc8xxx/ddr/ctrl_regs.c
diff options
context:
space:
mode:
Diffstat (limited to 'cpu/mpc8xxx/ddr/ctrl_regs.c')
-rw-r--r--cpu/mpc8xxx/ddr/ctrl_regs.c122
1 files changed, 91 insertions, 31 deletions
diff --git a/cpu/mpc8xxx/ddr/ctrl_regs.c b/cpu/mpc8xxx/ddr/ctrl_regs.c
index e6c2a5ce7..292980d0b 100644
--- a/cpu/mpc8xxx/ddr/ctrl_regs.c
+++ b/cpu/mpc8xxx/ddr/ctrl_regs.c
@@ -95,16 +95,10 @@ static void set_csn_config(int i, fsl_ddr_cfg_regs_t *ddr,
col_bits_cs_n = dimm_params[i/2].n_col_addr - 8;
}
- /* FIXME: intlv_en, intlv_ctl only on CS0_CONFIG */
- if (i != 0) {
- intlv_en = 0;
- intlv_ctl = 0;
- }
-
ddr->cs[i].config = (0
| ((cs_n_en & 0x1) << 31)
| ((intlv_en & 0x3) << 29)
- | ((intlv_en & 0xf) << 24)
+ | ((intlv_ctl & 0xf) << 24)
| ((ap_n_en & 0x1) << 23)
/* XXX: some implementation only have 1 bit starting at left */
@@ -117,6 +111,7 @@ static void set_csn_config(int i, fsl_ddr_cfg_regs_t *ddr,
| ((row_bits_cs_n & 0x7) << 8)
| ((col_bits_cs_n & 0x7) << 0)
);
+ debug("FSLDDR: cs[%d]_config = 0x%08x\n", i,ddr->cs[i].config);
}
/* Chip Select Configuration 2 (CSn_CONFIG_2) */
@@ -126,6 +121,7 @@ static void set_csn_config_2(int i, fsl_ddr_cfg_regs_t *ddr)
unsigned int pasr_cfg = 0; /* Partial array self refresh config */
ddr->cs[i].config_2 = ((pasr_cfg & 7) << 24);
+ debug("FSLDDR: cs[%d]_config_2 = 0x%08x\n", i, ddr->cs[i].config_2);
}
/* -3E = 667 CL5, -25 = CL6 800, -25E = CL5 800 */
@@ -171,7 +167,7 @@ static void set_timing_cfg_0(fsl_ddr_cfg_regs_t *ddr)
| ((trrt_mclk & 0x3) << 26) /* RRT */
| ((twwt_mclk & 0x3) << 24) /* WWT */
| ((act_pd_exit_mclk & 0x7) << 20) /* ACT_PD_EXIT */
- | ((pre_pd_exit_mclk & 0x7) << 16) /* PRE_PD_EXIT */
+ | ((pre_pd_exit_mclk & 0xF) << 16) /* PRE_PD_EXIT */
| ((taxpd_mclk & 0xf) << 8) /* ODT_PD_EXIT */
| ((tmrd_mclk & 0xf) << 0) /* MRS_CYC */
);
@@ -189,13 +185,18 @@ static void set_timing_cfg_3(fsl_ddr_cfg_regs_t *ddr,
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;
+
ext_refrec = (picos_to_mclk(common_dimm->tRFC_ps) - 8) >> 4;
ddr->timing_cfg_3 = (0
| ((ext_acttopre & 0x1) << 24)
- | ((ext_refrec & 0x7) << 16)
+ | ((ext_refrec & 0xF) << 16)
| ((ext_caslat & 0x1) << 12)
| ((cntl_adj & 0x7) << 0)
);
+ debug("FSLDDR: timing_cfg_3 = 0x%08x\n", ddr->timing_cfg_3);
}
/* DDR SDRAM Timing Configuration 1 (TIMING_CFG_1) */
@@ -254,15 +255,16 @@ static void set_timing_cfg_1(fsl_ddr_cfg_regs_t *ddr,
wrtord_mclk = picos_to_mclk(common_dimm->tWTR_ps);
ddr->timing_cfg_1 = (0
- | ((pretoact_mclk & 0x07) << 28)
+ | ((pretoact_mclk & 0x0F) << 28)
| ((acttopre_mclk & 0x0F) << 24)
- | ((acttorw_mclk & 0x7) << 20)
+ | ((acttorw_mclk & 0xF) << 20)
| ((caslat_ctrl & 0xF) << 16)
| ((refrec_ctrl & 0xF) << 12)
- | ((wrrec_mclk & 0x07) << 8)
+ | ((wrrec_mclk & 0x0F) << 8)
| ((acttoact_mclk & 0x07) << 4)
| ((wrtord_mclk & 0x07) << 0)
);
+ debug("FSLDDR: timing_cfg_1 = 0x%08x\n", ddr->timing_cfg_1);
}
/* DDR SDRAM Timing Configuration 2 (TIMING_CFG_2) */
@@ -311,14 +313,15 @@ static void set_timing_cfg_2(fsl_ddr_cfg_regs_t *ddr,
four_act = picos_to_mclk(popts->tFAW_window_four_activates_ps);
ddr->timing_cfg_2 = (0
- | ((add_lat_mclk & 0x7) << 28)
+ | ((add_lat_mclk & 0xf) << 28)
| ((cpo & 0x1f) << 23)
- | ((wr_lat & 0x7) << 19)
+ | ((wr_lat & 0xf) << 19)
| ((rd_to_pre & 0x7) << 13)
| ((wr_data_delay & 0x7) << 10)
| ((cke_pls & 0x7) << 6)
- | ((four_act & 0x1f) << 0)
+ | ((four_act & 0x3f) << 0)
);
+ debug("FSLDDR: timing_cfg_2 = 0x%08x\n", ddr->timing_cfg_2);
}
/* DDR SDRAM control configuration (DDR_SDRAM_CFG) */
@@ -333,7 +336,7 @@ static void set_ddr_sdram_cfg(fsl_ddr_cfg_regs_t *ddr,
unsigned int sdram_type; /* Type of SDRAM */
unsigned int dyn_pwr; /* Dynamic power management mode */
unsigned int dbw; /* DRAM dta bus width */
- unsigned int eight_be; /* 8-beat burst enable */
+ unsigned int eight_be = 0; /* 8-beat burst enable, DDR2 is zero */
unsigned int ncap = 0; /* Non-concurrent auto-precharge */
unsigned int threeT_en; /* Enable 3T timing */
unsigned int twoT_en; /* Enable 2T timing */
@@ -360,7 +363,9 @@ static void set_ddr_sdram_cfg(fsl_ddr_cfg_regs_t *ddr,
dyn_pwr = popts->dynamic_power;
dbw = popts->data_bus_width;
- eight_be = 0; /* always 0 for DDR2 */
+ /* DDR3 must use 8-beat bursts when using 32-bit bus mode */
+ if ((sdram_type == SDRAM_TYPE_DDR3) && (dbw == 0x1))
+ eight_be = 1;
threeT_en = popts->threeT_en;
twoT_en = popts->twoT_en;
ba_intlv_ctl = popts->ba_intlv_ctl;
@@ -385,6 +390,7 @@ static void set_ddr_sdram_cfg(fsl_ddr_cfg_regs_t *ddr,
| ((mem_halt & 0x1) << 1)
| ((bi & 0x1) << 0)
);
+ debug("FSLDDR: ddr_sdram_cfg = 0x%08x\n", ddr->ddr_sdram_cfg);
}
/* DDR SDRAM control configuration 2 (DDR_SDRAM_CFG_2) */
@@ -449,6 +455,7 @@ static void set_ddr_sdram_cfg_2(fsl_ddr_cfg_regs_t *ddr,
| ((rcw_en & 0x1) << 2)
| ((md_en & 0x1) << 0)
);
+ debug("FSLDDR: ddr_sdram_cfg_2 = 0x%08x\n", ddr->ddr_sdram_cfg_2);
}
/* DDR SDRAM Mode configuration 2 (DDR_SDRAM_MODE_2) */
@@ -461,6 +468,7 @@ static void set_ddr_sdram_mode_2(fsl_ddr_cfg_regs_t *ddr)
| ((esdmode2 & 0xFFFF) << 16)
| ((esdmode3 & 0xFFFF) << 0)
);
+ debug("FSLDDR: ddr_sdram_mode_2 = 0x%08x\n", ddr->ddr_sdram_mode_2);
}
/* DDR SDRAM Interval Configuration (DDR_SDRAM_INTERVAL) */
@@ -480,6 +488,7 @@ static void set_ddr_sdram_interval(fsl_ddr_cfg_regs_t *ddr,
| ((refint & 0xFFFF) << 16)
| ((bstopre & 0x3FFF) << 0)
);
+ debug("FSLDDR: ddr_sdram_interval = 0x%08x\n", ddr->ddr_sdram_interval);
}
/* DDR SDRAM Mode configuration set (DDR_SDRAM_MODE) */
@@ -613,6 +622,7 @@ static void set_ddr_sdram_mode(fsl_ddr_cfg_regs_t *ddr,
| ((esdmode & 0xFFFF) << 16)
| ((sdmode & 0xFFFF) << 0)
);
+ debug("FSLDDR: ddr_sdram_mode = 0x%08x\n", ddr->ddr_sdram_mode);
}
@@ -675,6 +685,7 @@ static void set_timing_cfg_4(fsl_ddr_cfg_regs_t *ddr)
| ((wwt & 0xf) << 16)
| (dll_lock & 0x3)
);
+ debug("FSLDDR: timing_cfg_4 = 0x%08x\n", ddr->timing_cfg_4);
}
/* DDR SDRAM Timing Configuration 5 (TIMING_CFG_5) */
@@ -686,11 +697,12 @@ static void set_timing_cfg_5(fsl_ddr_cfg_regs_t *ddr)
unsigned int wodt_off = 0; /* Write to ODT off */
ddr->timing_cfg_5 = (0
- | ((rodt_on & 0xf) << 24)
- | ((rodt_off & 0xf) << 20)
- | ((wodt_on & 0xf) << 12)
- | ((wodt_off & 0xf) << 8)
+ | ((rodt_on & 0x1f) << 24)
+ | ((rodt_off & 0x7) << 20)
+ | ((wodt_on & 0x1f) << 12)
+ | ((wodt_off & 0x7) << 8)
);
+ debug("FSLDDR: timing_cfg_5 = 0x%08x\n", ddr->timing_cfg_5);
}
/* DDR ZQ Calibration Control (DDR_ZQ_CNTL) */
@@ -738,15 +750,14 @@ static void set_ddr_wrlvl_cntl(fsl_ddr_cfg_regs_t *ddr)
| ((wrlvl_dqsen & 0x7) << 16)
| ((wrlvl_smpl & 0xf) << 12)
| ((wrlvl_wlr & 0x7) << 8)
- | ((wrlvl_start & 0xF) << 0)
+ | ((wrlvl_start & 0x1F) << 0)
);
}
/* DDR Self Refresh Counter (DDR_SR_CNTR) */
-static void set_ddr_sr_cntr(fsl_ddr_cfg_regs_t *ddr)
+static void set_ddr_sr_cntr(fsl_ddr_cfg_regs_t *ddr, unsigned int sr_it)
{
- unsigned int sr_it = 0; /* Self Refresh Idle Threshold */
-
+ /* Self Refresh Idle Threshold */
ddr->ddr_sr_cntr = (sr_it & 0xF) << 16;
}
@@ -849,6 +860,7 @@ compute_fsl_memctl_config_regs(const memctl_options_t *popts,
unsigned int i;
unsigned int cas_latency;
unsigned int additive_latency;
+ unsigned int sr_it;
memset(ddr, 0, sizeof(fsl_ddr_cfg_regs_t));
@@ -870,12 +882,21 @@ compute_fsl_memctl_config_regs(const memctl_options_t *popts,
? popts->additive_latency_override_value
: common_dimm->additive_latency;
+ sr_it = (popts->auto_self_refresh_en)
+ ? popts->sr_it
+ : 0;
+
/* Chip Select Memory Bounds (CSn_BNDS) */
for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
phys_size_t sa = 0;
phys_size_t ea = 0;
- if (popts->ba_intlv_ctl && i > 0) {
- /* Don't set up boundaries if bank interleaving */
+
+ if (popts->ba_intlv_ctl && (i > 0) &&
+ ((popts->ba_intlv_ctl & 0x60) != FSL_DDR_CS2_CS3 )) {
+ /* Don't set up boundaries for other CS
+ * other than CS0, if bank interleaving
+ * is enabled and not CS2+CS3 interleaved.
+ */
break;
}
@@ -894,7 +915,9 @@ compute_fsl_memctl_config_regs(const memctl_options_t *popts,
* on each controller is twice the amount present on
* each controller.
*/
- ea = (2 * common_dimm->total_mem >> dbw_cap_adj) - 1;
+ unsigned long long rank_density
+ = dimm_params[0].capacity;
+ ea = (2 * (rank_density >> dbw_cap_adj)) - 1;
}
else if (!popts->memctl_interleaving && popts->ba_intlv_ctl) {
/*
@@ -906,8 +929,44 @@ compute_fsl_memctl_config_regs(const memctl_options_t *popts,
* controller needs to be programmed into its
* respective CS0_BNDS.
*/
- sa = common_dimm->base_address;
- ea = sa + (common_dimm->total_mem >> dbw_cap_adj) - 1;
+ unsigned long long rank_density
+ = dimm_params[i/2].rank_density;
+ 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;
+ 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&1)) {
+ sa = dimm_params[i/2].base_address;
+ ea = sa + (i * (rank_density >>
+ dbw_cap_adj)) - 1;
+ }
+ break;
+ case FSL_DDR_CS0_CS1:
+ /* CS0+CS1 interleaving, CS0_CNDS needs
+ * to be set
+ */
+ sa = common_dimm->base_address;
+ ea = sa + (2 * (rank_density >> dbw_cap_adj))-1;
+ break;
+ case FSL_DDR_CS2_CS3:
+ /* CS2+CS3 interleaving*/
+ if (i == 2) {
+ sa = dimm_params[i/2].base_address;
+ ea = sa + (2 * (rank_density >>
+ dbw_cap_adj)) - 1;
+ }
+ break;
+ default: /* No bank(chip-select) interleaving */
+ break;
+ }
}
else if (popts->memctl_interleaving && !popts->ba_intlv_ctl) {
/*
@@ -955,6 +1014,7 @@ compute_fsl_memctl_config_regs(const memctl_options_t *popts,
| ((ea & 0xFFF) << 0) /* ending address MSB */
);
+ debug("FSLDDR: cs[%d]_bnds = 0x%08x\n", i, ddr->cs[i].bnds);
set_csn_config(i, ddr, popts, dimm_params);
set_csn_config_2(i, ddr);
}
@@ -986,7 +1046,7 @@ compute_fsl_memctl_config_regs(const memctl_options_t *popts,
set_ddr_wrlvl_cntl(ddr);
set_ddr_pd_cntl(ddr);
- set_ddr_sr_cntr(ddr);
+ set_ddr_sr_cntr(ddr, sr_it);
set_ddr_sdram_rcw_1(ddr);
set_ddr_sdram_rcw_2(ddr);
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-02 16:19:11 +0000