ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/uboot/board/freescale/p2041rdb/ddr.c b/marvell/uboot/board/freescale/p2041rdb/ddr.c
new file mode 100644
index 0000000..b8bbcdf
--- /dev/null
+++ b/marvell/uboot/board/freescale/p2041rdb/ddr.c
@@ -0,0 +1,140 @@
+/*
+ * Copyright 2011 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
+ * Version 2 as published by the Free Software Foundation.
+ */
+
+#include <common.h>
+#include <i2c.h>
+#include <hwconfig.h>
+#include <asm/mmu.h>
+#include <fsl_ddr_sdram.h>
+#include <fsl_ddr_dimm_params.h>
+#include <asm/fsl_law.h>
+
+struct board_specific_parameters {
+ u32 n_ranks;
+ u32 datarate_mhz_high;
+ u32 clk_adjust;
+ u32 wrlvl_start;
+ u32 cpo;
+ u32 write_data_delay;
+ u32 force_2t;
+};
+
+/*
+ * This table contains all valid speeds we want to override with board
+ * specific parameters. datarate_mhz_high values need to be in ascending order
+ * for each n_ranks group.
+ *
+ * ranges for parameters:
+ * wr_data_delay = 0-6
+ * clk adjust = 0-8
+ * cpo 2-0x1E (30)
+ */
+static const struct board_specific_parameters dimm0[] = {
+ /*
+ * memory controller 0
+ * num| hi| clk| wrlvl | cpo |wrdata|2T
+ * ranks| mhz|adjst| start | delay|
+ */
+ {2, 750, 3, 5, 0xff, 2, 0},
+ {2, 1250, 4, 6, 0xff, 2, 0},
+ {2, 1350, 5, 7, 0xff, 2, 0},
+ {2, 1666, 5, 8, 0xff, 2, 0},
+ {}
+};
+
+void fsl_ddr_board_options(memctl_options_t *popts,
+ dimm_params_t *pdimm,
+ unsigned int ctrl_num)
+{
+ const struct board_specific_parameters *pbsp, *pbsp_highest = NULL;
+ ulong ddr_freq;
+
+ if (ctrl_num) {
+ printf("Wrong parameter for controller number %d", ctrl_num);
+ return;
+ }
+ if (!pdimm->n_ranks)
+ return;
+
+ pbsp = dimm0;
+
+ /*
+ * Get clk_adjust, cpo, write_data_delay,2T, according to the board ddr
+ * freqency and n_banks specified in board_specific_parameters table.
+ */
+ ddr_freq = get_ddr_freq(0) / 1000000;
+ while (pbsp->datarate_mhz_high) {
+ if (pbsp->n_ranks == pdimm->n_ranks) {
+ if (ddr_freq <= pbsp->datarate_mhz_high) {
+ popts->cpo_override = pbsp->cpo;
+ popts->write_data_delay =
+ pbsp->write_data_delay;
+ popts->clk_adjust = pbsp->clk_adjust;
+ popts->wrlvl_start = pbsp->wrlvl_start;
+ popts->twot_en = pbsp->force_2t;
+ 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->cpo_override = pbsp_highest->cpo;
+ popts->write_data_delay = pbsp_highest->write_data_delay;
+ popts->clk_adjust = pbsp_highest->clk_adjust;
+ popts->wrlvl_start = pbsp_highest->wrlvl_start;
+ popts->twot_en = pbsp_highest->force_2t;
+ } else {
+ panic("DIMM is not supported by this board");
+ }
+
+found:
+ /*
+ * Factors to consider for half-strength driver enable:
+ * - number of DIMMs installed
+ */
+ popts->half_strength_driver_enable = 0;
+ /* Write leveling override */
+ popts->wrlvl_override = 1;
+ popts->wrlvl_sample = 0xf;
+
+ /* Rtt and Rtt_WR override */
+ popts->rtt_override = 0;
+
+ /* Enable ZQ calibration */
+ popts->zq_en = 1;
+
+ /* DHC_EN =1, ODT = 60 Ohm */
+ popts->ddr_cdr1 = DDR_CDR1_DHC_EN;
+}
+
+phys_size_t initdram(int board_type)
+{
+ phys_size_t dram_size = 0;
+
+ puts("Initializing....");
+
+ if (fsl_use_spd()) {
+ puts("using SPD\n");
+ dram_size = fsl_ddr_sdram();
+ } else {
+ puts("no SPD and fixed parameters\n");
+ return dram_size;
+ }
+
+ dram_size = setup_ddr_tlbs(dram_size / 0x100000);
+ dram_size *= 0x100000;
+
+ debug(" DDR: ");
+ return dram_size;
+}