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authorYork Sun <yorksun@freescale.com>2015-03-20 19:28:24 -0700
committerYork Sun <yorksun@freescale.com>2015-04-23 08:55:58 -0700
commite2b65ea975c2ddc67a958bf428e34ee3c543061a (patch)
tree36641a3aba11b9c80a655c4c1ebbeaf173f9df60 /board/freescale/ls2085ardb/ddr.c
parent7288c2c2b0d4ea2475424ef9d00227a4b608234d (diff)
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armv8/ls2085ardb: Add support of LS2085ARDB platform
The LS2085ARDB is a evaluation platform that supports LS2085A family SoCs. This patch add sbasic support for the platform. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com> Signed-off-by: Bhupesh Sharma <bhupesh.sharma@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
Diffstat (limited to 'board/freescale/ls2085ardb/ddr.c')
-rw-r--r--board/freescale/ls2085ardb/ddr.c192
1 files changed, 192 insertions, 0 deletions
diff --git a/board/freescale/ls2085ardb/ddr.c b/board/freescale/ls2085ardb/ddr.c
new file mode 100644
index 0000000..6cd5e8b
--- /dev/null
+++ b/board/freescale/ls2085ardb/ddr.c
@@ -0,0 +1,192 @@
+/*
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <fsl_ddr_sdram.h>
+#include <fsl_ddr_dimm_params.h>
+#include "ddr.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+void fsl_ddr_board_options(memctl_options_t *popts,
+ dimm_params_t *pdimm,
+ unsigned int ctrl_num)
+{
+ u8 dq_mapping_0, dq_mapping_2, dq_mapping_3;
+ const struct board_specific_parameters *pbsp, *pbsp_highest = NULL;
+ ulong ddr_freq;
+ int slot;
+
+ if (ctrl_num > 2) {
+ printf("Not supported controller number %d\n", ctrl_num);
+ return;
+ }
+
+ for (slot = 0; slot < CONFIG_DIMM_SLOTS_PER_CTLR; slot++) {
+ if (pdimm[slot].n_ranks)
+ break;
+ }
+
+ if (slot >= CONFIG_DIMM_SLOTS_PER_CTLR)
+ return;
+
+ /*
+ * we use identical timing for all slots. If needed, change the code
+ * to pbsp = rdimms[ctrl_num] or pbsp = udimms[ctrl_num];
+ */
+ if (popts->registered_dimm_en)
+ pbsp = rdimms[ctrl_num];
+ else
+ pbsp = udimms[ctrl_num];
+
+
+ /* Get clk_adjust, wrlvl_start, wrlvl_ctl, according to the board ddr
+ * freqency and n_banks specified in board_specific_parameters table.
+ */
+ ddr_freq = get_ddr_freq(ctrl_num) / 1000000;
+ while (pbsp->datarate_mhz_high) {
+ if (pbsp->n_ranks == pdimm[slot].n_ranks &&
+ (pdimm[slot].rank_density >> 30) >= pbsp->rank_gb) {
+ if (ddr_freq <= pbsp->datarate_mhz_high) {
+ popts->clk_adjust = pbsp->clk_adjust;
+ popts->wrlvl_start = pbsp->wrlvl_start;
+ popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2;
+ popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3;
+ goto found;
+ }
+ pbsp_highest = pbsp;
+ }
+ pbsp++;
+ }
+
+ if (pbsp_highest) {
+ printf("Error: board specific timing not found for data rate %lu MT/s\n"
+ "Trying to use the highest speed (%u) parameters\n",
+ ddr_freq, pbsp_highest->datarate_mhz_high);
+ popts->clk_adjust = pbsp_highest->clk_adjust;
+ popts->wrlvl_start = pbsp_highest->wrlvl_start;
+ popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2;
+ popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3;
+ } else {
+ panic("DIMM is not supported by this board");
+ }
+found:
+ debug("Found timing match: n_ranks %d, data rate %d, rank_gb %d\n"
+ "\tclk_adjust %d, wrlvl_start %d, wrlvl_ctrl_2 0x%x, wrlvl_ctrl_3 0x%x\n",
+ pbsp->n_ranks, pbsp->datarate_mhz_high, pbsp->rank_gb,
+ pbsp->clk_adjust, pbsp->wrlvl_start, pbsp->wrlvl_ctl_2,
+ pbsp->wrlvl_ctl_3);
+
+ if (ctrl_num == CONFIG_DP_DDR_CTRL) {
+ /* force DDR bus width to 32 bits */
+ popts->data_bus_width = 1;
+ popts->otf_burst_chop_en = 0;
+ popts->burst_length = DDR_BL8;
+ popts->bstopre = 0; /* enable auto precharge */
+ /*
+ * Layout optimization results byte mapping
+ * Byte 0 -> Byte ECC
+ * Byte 1 -> Byte 3
+ * Byte 2 -> Byte 2
+ * Byte 3 -> Byte 1
+ * Byte ECC -> Byte 0
+ */
+ dq_mapping_0 = pdimm[slot].dq_mapping[0];
+ dq_mapping_2 = pdimm[slot].dq_mapping[2];
+ dq_mapping_3 = pdimm[slot].dq_mapping[3];
+ pdimm[slot].dq_mapping[0] = pdimm[slot].dq_mapping[8];
+ pdimm[slot].dq_mapping[1] = pdimm[slot].dq_mapping[9];
+ pdimm[slot].dq_mapping[2] = pdimm[slot].dq_mapping[6];
+ pdimm[slot].dq_mapping[3] = pdimm[slot].dq_mapping[7];
+ pdimm[slot].dq_mapping[6] = dq_mapping_2;
+ pdimm[slot].dq_mapping[7] = dq_mapping_3;
+ pdimm[slot].dq_mapping[8] = dq_mapping_0;
+ pdimm[slot].dq_mapping[9] = 0;
+ pdimm[slot].dq_mapping[10] = 0;
+ pdimm[slot].dq_mapping[11] = 0;
+ pdimm[slot].dq_mapping[12] = 0;
+ pdimm[slot].dq_mapping[13] = 0;
+ pdimm[slot].dq_mapping[14] = 0;
+ pdimm[slot].dq_mapping[15] = 0;
+ pdimm[slot].dq_mapping[16] = 0;
+ pdimm[slot].dq_mapping[17] = 0;
+ }
+ /* To work at higher than 1333MT/s */
+ popts->half_strength_driver_enable = 0;
+ /*
+ * Write leveling override
+ */
+ popts->wrlvl_override = 1;
+ popts->wrlvl_sample = 0x0; /* 32 clocks */
+
+ /*
+ * Rtt and Rtt_WR override
+ */
+ popts->rtt_override = 0;
+
+ /* Enable ZQ calibration */
+ popts->zq_en = 1;
+
+ if (ddr_freq < 2350) {
+ popts->ddr_cdr1 = DDR_CDR1_DHC_EN |
+ DDR_CDR1_ODT(DDR_CDR_ODT_60ohm);
+ popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_60ohm) |
+ DDR_CDR2_VREF_RANGE_2;
+ } else {
+ popts->ddr_cdr1 = DDR_CDR1_DHC_EN |
+ DDR_CDR1_ODT(DDR_CDR_ODT_100ohm);
+ popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_100ohm) |
+ DDR_CDR2_VREF_RANGE_2;
+ }
+}
+
+phys_size_t initdram(int board_type)
+{
+ phys_size_t dram_size;
+
+ puts("Initializing DDR....using SPD\n");
+
+ dram_size = fsl_ddr_sdram();
+
+ return dram_size;
+}
+
+void dram_init_banksize(void)
+{
+#ifdef CONFIG_SYS_DP_DDR_BASE_PHY
+ phys_size_t dp_ddr_size;
+#endif
+
+ gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
+ if (gd->ram_size > CONFIG_SYS_LS2_DDR_BLOCK1_SIZE) {
+ gd->bd->bi_dram[0].size = CONFIG_SYS_LS2_DDR_BLOCK1_SIZE;
+ gd->bd->bi_dram[1].start = CONFIG_SYS_DDR_BLOCK2_BASE;
+ gd->bd->bi_dram[1].size = gd->ram_size -
+ CONFIG_SYS_LS2_DDR_BLOCK1_SIZE;
+ } else {
+ gd->bd->bi_dram[0].size = gd->ram_size;
+ }
+
+#ifdef CONFIG_SYS_DP_DDR_BASE_PHY
+ /* initialize DP-DDR here */
+ puts("DP-DDR: ");
+ /*
+ * DDR controller use 0 as the base address for binding.
+ * It is mapped to CONFIG_SYS_DP_DDR_BASE for core to access.
+ */
+ dp_ddr_size = fsl_other_ddr_sdram(CONFIG_SYS_DP_DDR_BASE_PHY,
+ CONFIG_DP_DDR_CTRL,
+ CONFIG_DP_DDR_NUM_CTRLS,
+ CONFIG_DP_DDR_DIMM_SLOTS_PER_CTLR,
+ NULL, NULL, NULL);
+ if (dp_ddr_size) {
+ gd->bd->bi_dram[2].start = CONFIG_SYS_DP_DDR_BASE;
+ gd->bd->bi_dram[2].size = dp_ddr_size;
+ } else {
+ puts("Not detected");
+ }
+#endif
+}