FSL DDR: Convert SBC8641D to new DDR code.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

diff --git a/board/sbc8641d/Makefile b/board/sbc8641d/Makefile
index c096e15..c78b0a8 100644 (file)
--- a/board/sbc8641d/Makefile
+++ b/board/sbc8641d/Makefile
@@ -25,10 +25,12 @@ include $(TOPDIR)/config.mk
 
 LIB    = $(obj)lib$(BOARD).a
 
-COBJS  := $(BOARD).o law.o
+COBJS-y        += $(BOARD).o
+COBJS-y        += law.o
+COBJS-$(CONFIG_FSL_DDR2) += ddr.o
 
-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/sbc8641d/ddr.c b/board/sbc8641d/ddr.c
new file mode 100644 (file)
index 0000000..5163abf
--- /dev/null
+++ b/board/sbc8641d/ddr.c
@@ -0,0 +1,88 @@
+/*
+ * 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;
+               }
+               if (ctrl_num == 0 && i == 1) {
+                       i2c_address = SPD_EEPROM_ADDRESS2;
+               }
+               if (ctrl_num == 1 && i == 0) {
+                       i2c_address = SPD_EEPROM_ADDRESS3;
+               }
+               if (ctrl_num == 1 && i == 1) {
+                       i2c_address = SPD_EEPROM_ADDRESS4;
+               }
+               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/sbc8641d/sbc8641d.c b/board/sbc8641d/sbc8641d.c
index c724eff..62b48c8 100644 (file)
--- a/board/sbc8641d/sbc8641d.c
+++ b/board/sbc8641d/sbc8641d.c
@@ -34,7 +34,7 @@
 #include <asm/processor.h>
 #include <asm/immap_86xx.h>
 #include <asm/immap_fsl_pci.h>
-#include <spd_sdram.h>
+#include <asm/fsl_ddr_sdram.h>
 #include <libfdt.h>
 #include <fdt_support.h>
 
@@ -42,7 +42,6 @@
 extern void ddr_enable_ecc (unsigned int dram_size);
 #endif
 
-void sdram_init (void);
 long int fixed_sdram (void);
 
 int board_early_init_f (void)
@@ -62,7 +61,7 @@ phys_size_t 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/sbc8641d.h b/include/configs/sbc8641d.h
index efc787e..ddca527 100644 (file)
--- a/include/configs/sbc8641d.h
+++ b/include/configs/sbc8641d.h
@@ -61,8 +61,6 @@
 #define CONFIG_HIGH_BATS       1       /* High BATs supported and enabled */
 
 #undef CONFIG_SPD_EEPROM               /* Do not use SPD EEPROM for DDR setup*/
-#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
@@ -114,6 +112,10 @@
 
 #define MPC86xx_DDR_SDRAM_CLK_CNTL
 
+#define CONFIG_NUM_DDR_CONTROLLERS     2
+#define CONFIG_DIMM_SLOTS_PER_CTLR     2
+#define CONFIG_CHIP_SELECTS_PER_CTRL   (2 * CONFIG_DIMM_SLOTS_PER_CTLR)
+
 #if defined(CONFIG_SPD_EEPROM)
     /*
      * Determine DDR configuration from I2C interface.