[U-Boot] [PATCH v5 08/10] FSL DDR: Convert MPC8610HPCD to new DDR code.

[Kumar Gala <galak@kernel.crashing.org>]

From: Jon Loeliger <jdl@freescale.com>

Signed-off-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
 board/freescale/mpc8610hpcd/Makefile      |   10 ++--
 board/freescale/mpc8610hpcd/ddr.c         |   79 +++++++++++++++++++++++++++++
 board/freescale/mpc8610hpcd/mpc8610hpcd.c |    3 +-
 include/configs/MPC8610HPCD.h             |   43 +++++++--------
 4 files changed, 106 insertions(+), 29 deletions(-)
 create mode 100644 board/freescale/mpc8610hpcd/ddr.c

diff --git a/board/freescale/mpc8610hpcd/Makefile b/board/freescale/mpc8610hpcd/Makefile
index a457c32..930a206 100644
--- a/board/freescale/mpc8610hpcd/Makefile
+++ b/board/freescale/mpc8610hpcd/Makefile
@@ -23,14 +23,14 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(BOARD).a
 
-COBJS	:= $(BOARD).o law.o
+COBJS-y	+= $(BOARD).o
+COBJS-$(CONFIG_FSL_DDR2) += ddr.o
+COBJS-y	+= law.o
 
 COBJS-${CONFIG_FSL_DIU_FB}	+= mpc8610hpcd_diu.o
 
-COBJS	+= ${COBJS-y}
-
-SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
+SRCS	:= $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS-y))
 SOBJS	:= $(addprefix $(obj),$(SOBJS))
 
 $(LIB):	$(obj).depend $(OBJS) $(SOBJS)
diff --git a/board/freescale/mpc8610hpcd/ddr.c b/board/freescale/mpc8610hpcd/ddr.c
new file mode 100644
index 0000000..2d22da1
--- /dev/null
+++ b/board/freescale/mpc8610hpcd/ddr.c
@@ -0,0 +1,79 @@
+/*
+ * 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.
+ */
+
+#include <common.h>
+#include <i2c.h>
+
+#include <asm/fsl_ddr_sdram.h>
+
+static void
+get_spd(ddr2_spd_eeprom_t *spd, unsigned char i2c_address)
+{
+	i2c_read(i2c_address, 0, 1, (uchar *)spd, sizeof(ddr2_spd_eeprom_t));
+}
+
+unsigned int fsl_ddr_get_mem_data_rate(void)
+{
+	return get_bus_freq(0);
+}
+
+void fsl_ddr_get_spd(ddr2_spd_eeprom_t *ctrl_dimms_spd,
+		      unsigned int ctrl_num)
+{
+	unsigned int i;
+	unsigned int i2c_address = 0;
+
+	for (i = 0; i < CONFIG_DIMM_SLOTS_PER_CTLR; i++) {
+		if (ctrl_num == 0 && i == 0) {
+			i2c_address = SPD_EEPROM_ADDRESS1;
+		}
+		get_spd(&(ctrl_dimms_spd[i]), i2c_address);
+	}
+}
+
+void fsl_ddr_board_options(memctl_options_t *popts, unsigned int ctrl_num)
+{
+	/*
+	 * Factors to consider for clock adjust:
+	 *	- number of chips on bus
+	 *	- position of slot
+	 *	- DDR1 vs. DDR2?
+	 *	- ???
+	 *
+	 * This needs to be determined on a board-by-board basis.
+	 *	0110	3/4 cycle late
+	 *	0111	7/8 cycle late
+	 */
+	popts->clk_adjust = 7;
+
+	/*
+	 * Factors to consider for CPO:
+	 *	- frequency
+	 *	- ddr1 vs. ddr2
+	 */
+	popts->cpo_override = 10;
+
+	/*
+	 * Factors to consider for write data delay:
+	 *	- number of DIMMs
+	 *
+	 * 1 = 1/4 clock delay
+	 * 2 = 1/2 clock delay
+	 * 3 = 3/4 clock delay
+	 * 4 = 1   clock delay
+	 * 5 = 5/4 clock delay
+	 * 6 = 3/2 clock delay
+	 */
+	popts->write_data_delay = 3;
+
+	/*
+	 * Factors to consider for half-strength driver enable:
+	 *	- number of DIMMs installed
+	 */
+	popts->half_strength_driver_enable = 0;
+}
diff --git a/board/freescale/mpc8610hpcd/mpc8610hpcd.c b/board/freescale/mpc8610hpcd/mpc8610hpcd.c
index ff1b892..c9dde4d 100644
--- a/board/freescale/mpc8610hpcd/mpc8610hpcd.c
+++ b/board/freescale/mpc8610hpcd/mpc8610hpcd.c
@@ -26,6 +26,7 @@
 #include <asm/processor.h>
 #include <asm/immap_86xx.h>
 #include <asm/immap_fsl_pci.h>
+#include <asm/fsl_ddr_sdram.h>
 #include <i2c.h>
 #include <asm/io.h>
 #include <libfdt.h>
@@ -122,7 +123,7 @@ initdram(int board_type)
 	long dram_size = 0;
 
 #if defined(CONFIG_SPD_EEPROM)
-	dram_size = spd_sdram();
+	dram_size = fsl_ddr_sdram();
 #else
 	dram_size = fixed_sdram();
 #endif
diff --git a/include/configs/MPC8610HPCD.h b/include/configs/MPC8610HPCD.h
index e9371a2..0c1c4fc 100644
--- a/include/configs/MPC8610HPCD.h
+++ b/include/configs/MPC8610HPCD.h
@@ -8,7 +8,6 @@
 
 /*
  * MPC8610HPCD board configuration file
- *
  */
 
 #ifndef __CONFIG_H
@@ -45,14 +44,6 @@
 #define CONFIG_FSL_LAW		1	/* Use common FSL init code */
 
 #define CONFIG_ENV_OVERWRITE
-
-#define CONFIG_SPD_EEPROM		/* Use SPD for DDR */
-#undef CONFIG_DDR_DLL			/* possible DLL fix needed */
-#define CONFIG_DDR_2T_TIMING		/* Sets the 2T timing bit */
-#undef  CONFIG_DDR_ECC			/* only for ECC DDR module */
-#define CONFIG_ECC_INIT_VIA_DDRCONTROLLER	/* DDR controller or DMA? */
-#define CONFIG_MEM_INIT_VALUE		0xDeadBeef
-#define CONFIG_NUM_DDR_CONTROLLERS	1
 #define CONFIG_INTERRUPTS		/* enable pci, srio, ddr interrupts */
 
 #define CONFIG_HIGH_BATS	1	/* High BATs supported & enabled */
@@ -89,25 +80,28 @@
 
 #define CFG_DIU_ADDR		(CFG_CCSRBAR+0x2c000)
 
-/*
- * DDR Setup
- */
+/* DDR Setup */
+#define CONFIG_FSL_DDR2
+#undef CONFIG_FSL_DDR_INTERACTIVE
+#define CONFIG_SPD_EEPROM		/* Use SPD for DDR */
+#define CONFIG_DDR_SPD
+
+#define CONFIG_ECC_INIT_VIA_DDRCONTROLLER	/* DDR controller or DMA? */
+#define CONFIG_MEM_INIT_VALUE	0xDeadBeef
+
 #define CFG_DDR_SDRAM_BASE	0x00000000	/* DDR is system memory*/
 #define CFG_SDRAM_BASE		CFG_DDR_SDRAM_BASE
 #define CONFIG_VERY_BIG_RAM
 
 #define MPC86xx_DDR_SDRAM_CLK_CNTL
 
-#if defined(CONFIG_SPD_EEPROM)
-/*
- * Determine DDR configuration from I2C interface.
- */
-#define SPD_EEPROM_ADDRESS1		0x51		/* DDR DIMM */
-#else
-/*
- * Manually set up DDR1 parameters
- */
+#define CONFIG_NUM_DDR_CONTROLLERS	1
+#define CONFIG_DIMM_SLOTS_PER_CTLR	1
+#define CONFIG_CHIP_SELECTS_PER_CTRL	(2 * CONFIG_DIMM_SLOTS_PER_CTLR)
+
+#define SPD_EEPROM_ADDRESS1	0x51	/* CTLR 0 DIMM 0 */
 
+/* These are used when DDR doesn't use SPD.  */
 #define CFG_SDRAM_SIZE	256		/* DDR is 256MB */
 
 #if 0 /* TODO */
@@ -130,7 +124,10 @@
 #define CFG_DDR_ERR_INT_EN	0x00000000
 #define CFG_DDR_ERR_DIS		0x00000000
 #define CFG_DDR_SBE		0x000f0000
- /* Not used in fixed_sdram function */
+
+/*
+ * FIXME: Not used in fixed_sdram function
+ */
 #define CFG_DDR_MODE		0x00000022
 #define CFG_DDR_CS1_BNDS	0x00000000
 #define CFG_DDR_CS2_BNDS	0x00000FFF	/* Not done */
@@ -138,7 +135,7 @@
 #define CFG_DDR_CS4_BNDS	0x00000FFF	/* Not done */
 #define CFG_DDR_CS5_BNDS	0x00000FFF	/* Not done */
 #endif
-#endif
+
 
 #define CONFIG_ID_EEPROM
 #define CFG_I2C_EEPROM_NXID
-- 
1.5.5.1