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authorKumar Gala <galak@kernel.crashing.org>2008-08-26 15:01:37 -0500
committerWolfgang Denk <wd@denx.de>2008-08-27 02:06:04 +0200
commit9bd4e5911b750837515466bc7449087698b88e0e (patch)
treed6f80cff80369b09a932ac4c5509b3c9fd91a266 /board/sbc8641d
parent39aa1a73483e1ac2bd56d5523abfc3970ee82c77 (diff)
downloadu-boot-linaro-stable-9bd4e5911b750837515466bc7449087698b88e0e.tar.gz
FSL DDR: Convert SBC8641D to new DDR code.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'board/sbc8641d')
-rw-r--r--board/sbc8641d/Makefile8
-rw-r--r--board/sbc8641d/ddr.c88
-rw-r--r--board/sbc8641d/sbc8641d.c5
3 files changed, 95 insertions, 6 deletions
diff --git a/board/sbc8641d/Makefile b/board/sbc8641d/Makefile
index c096e1552..c78b0a828 100644
--- 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
index 000000000..5163abf05
--- /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 c724effa0..62b48c836 100644
--- 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