From 0e7927db138976469e7257e29c1338050a50fcd9 Mon Sep 17 00:00:00 2001
From: Kumar Gala <galak@kernel.crashing.org>
Date: Wed, 27 Aug 2008 01:04:07 -0500
Subject: FSL DDR: Convert STXSSA to new DDR code.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
 board/stxssa/Makefile   |  9 ++++---
 board/stxssa/ddr.c      | 70 +++++++++++++++++++++++++++++++++++++++++++++++++
 board/stxssa/stxssa.c   |  6 ++++-
 board/stxssa/u-boot.lds |  1 -
 4 files changed, 81 insertions(+), 5 deletions(-)
 create mode 100644 board/stxssa/ddr.c

(limited to 'board/stxssa')

diff --git a/board/stxssa/Makefile b/board/stxssa/Makefile
index e29cf95..9ab41ec 100644
--- a/board/stxssa/Makefile
+++ b/board/stxssa/Makefile
@@ -25,10 +25,13 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(BOARD).a
 
-COBJS	:= $(BOARD).o law.o tlb.o
+COBJS-y	+= $(BOARD).o
+COBJS-y	+= law.o
+COBJS-y	+= tlb.o
+COBJS-$(CONFIG_FSL_DDR1) += 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/stxssa/ddr.c b/board/stxssa/ddr.c
new file mode 100644
index 0000000..45372f4
--- /dev/null
+++ b/board/stxssa/ddr.c
@@ -0,0 +1,70 @@
+/*
+ * 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(ddr1_spd_eeprom_t *spd, unsigned char i2c_address)
+{
+	i2c_read(i2c_address, 0, 1, (uchar *)spd, sizeof(ddr1_spd_eeprom_t));
+}
+
+
+unsigned int
+fsl_ddr_get_mem_data_rate(void)
+{
+	return get_ddr_freq(0);
+}
+
+
+void
+fsl_ddr_get_spd(ddr1_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_ADDRESS;
+		}
+		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 CPO:
+	 *	- frequency
+	 *	- ddr1 vs. ddr2
+	 */
+	popts->cpo_override = 0;
+
+	/*
+	 * 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/stxssa/stxssa.c b/board/stxssa/stxssa.c
index 2c4b546..124e123 100644
--- a/board/stxssa/stxssa.c
+++ b/board/stxssa/stxssa.c
@@ -32,7 +32,9 @@
 #include <common.h>
 #include <pci.h>
 #include <asm/processor.h>
+#include <asm/mmu.h>
 #include <asm/immap_85xx.h>
+#include <asm/fsl_ddr_sdram.h>
 #include <ioports.h>
 #include <asm/io.h>
 #include <spd_sdram.h>
@@ -308,7 +310,9 @@ initdram (int board_type)
 	}
 #endif
 
-	dram_size = spd_sdram ();
+	dram_size = fsl_ddr_sdram();
+	dram_size = setup_ddr_tlbs(dram_size / 0x100000);
+	dram_size *= 0x100000;
 
 #if defined(CONFIG_DDR_ECC)
 	/* Initialize and enable DDR ECC.
diff --git a/board/stxssa/u-boot.lds b/board/stxssa/u-boot.lds
index b0a9d68..93bedda 100644
--- a/board/stxssa/u-boot.lds
+++ b/board/stxssa/u-boot.lds
@@ -76,7 +76,6 @@ SECTIONS
     cpu/mpc85xx/cpu_init.o (.text)
     cpu/mpc85xx/cpu.o (.text)
     cpu/mpc85xx/speed.o (.text)
-    cpu/mpc85xx/spd_sdram.o (.text)
     common/dlmalloc.o (.text)
     lib_generic/crc32.o (.text)
     lib_ppc/extable.o (.text)
-- 
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