Pass dimm parameters to populate populate controller options

Because some dimm parameters like n_ranks needs to be used with the board
frequency to choose the board parameters like clk_adjust etc. in the
board_specific_paramesters table of the board ddr file, we need to pass
the dimm parameters to the board file.

* move ddr dimm parameters header file from /cpu to /include directory.
* add ddr dimm parameters to populate board specific options.
* Fix fsl_ddr_board_options() for all the 8xxx boards which call this function.

Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>

1 files changed, 84 insertions, 0 deletions

diff --git a/include/asm-ppc/fsl_ddr_dimm_params.h b/include/asm-ppc/fsl_ddr_dimm_params.h
new file mode 100644
index 0000000..c794eed
--- /dev/null
+++ b/include/asm-ppc/fsl_ddr_dimm_params.h
@@ -0,0 +1,84 @@
+/*
+ * Copyright 2008 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.
+ */
+
+#ifndef DDR2_DIMM_PARAMS_H
+#define DDR2_DIMM_PARAMS_H
+
+/* Parameters for a DDR2 dimm computed from the SPD */
+typedef struct dimm_params_s {
+
+	/* DIMM organization parameters */
+	char mpart[19];		/* guaranteed null terminated */
+
+	unsigned int n_ranks;
+	unsigned long long rank_density;
+	unsigned long long capacity;
+	unsigned int data_width;
+	unsigned int primary_sdram_width;
+	unsigned int ec_sdram_width;
+	unsigned int registered_dimm;
+
+	/* SDRAM device parameters */
+	unsigned int n_row_addr;
+	unsigned int n_col_addr;
+	unsigned int edc_config;	/* 0 = none, 1 = parity, 2 = ECC */
+	unsigned int n_banks_per_sdram_device;
+	unsigned int burst_lengths_bitmask;	/* BL=4 bit 2, BL=8 = bit 3 */
+	unsigned int row_density;
+
+	/* used in computing base address of DIMMs */
+	unsigned long long base_address;
+
+	/* DIMM timing parameters */
+
+	/*
+	 * SDRAM clock periods
+	 * The range for these are 1000-10000 so a short should be sufficient
+	 */
+	unsigned int tCKmin_X_ps;
+	unsigned int tCKmin_X_minus_1_ps;
+	unsigned int tCKmin_X_minus_2_ps;
+	unsigned int tCKmax_ps;
+
+	/* SPD-defined CAS latencies */
+	unsigned int caslat_X;
+	unsigned int caslat_X_minus_1;
+	unsigned int caslat_X_minus_2;
+
+	unsigned int caslat_lowest_derated;	/* Derated CAS latency */
+
+	/* basic timing parameters */
+	unsigned int tRCD_ps;
+	unsigned int tRP_ps;
+	unsigned int tRAS_ps;
+
+	unsigned int tWR_ps;	/* maximum = 63750 ps */
+	unsigned int tWTR_ps;	/* maximum = 63750 ps */
+	unsigned int tRFC_ps;   /* max = 255 ns + 256 ns + .75 ns
+				       = 511750 ps */
+
+	unsigned int tRRD_ps;	/* maximum = 63750 ps */
+	unsigned int tRC_ps;	/* maximum = 254 ns + .75 ns = 254750 ps */
+
+	unsigned int refresh_rate_ps;
+
+	unsigned int tIS_ps;	/* byte 32, spd->ca_setup */
+	unsigned int tIH_ps;	/* byte 33, spd->ca_hold */
+	unsigned int tDS_ps;	/* byte 34, spd->data_setup */
+	unsigned int tDH_ps;	/* byte 35, spd->data_hold */
+	unsigned int tRTP_ps;	/* byte 38, spd->trtp */
+	unsigned int tDQSQ_max_ps;	/* byte 44, spd->tdqsq */
+	unsigned int tQHS_ps;	/* byte 45, spd->tqhs */
+} dimm_params_t;
+
+extern unsigned int ddr_compute_dimm_parameters(
+					 const generic_spd_eeprom_t *spd,
+					 dimm_params_t *pdimm,
+					 unsigned int dimm_number);
+
+#endif