[U-Boot] [PATCH 13/24] FSL DDR: Convert sbc8548 to new DDR code.
Kumar Gala
galak at kernel.crashing.org
Wed Aug 27 08:10:46 CEST 2008
Signed-off-by: Kumar Gala <galak at kernel.crashing.org>
---
board/sbc8548/Makefile | 9 +++--
board/sbc8548/ddr.c | 80 +++++++++++++++++++++++++++++++++++++++++++++
board/sbc8548/sbc8548.c | 5 ++-
include/configs/sbc8548.h | 31 ++++++++++-------
4 files changed, 108 insertions(+), 17 deletions(-)
create mode 100644 board/sbc8548/ddr.c
diff --git a/board/sbc8548/Makefile b/board/sbc8548/Makefile
index bb96d95..9919a6e 100644
--- a/board/sbc8548/Makefile
+++ b/board/sbc8548/Makefile
@@ -28,10 +28,13 @@ 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_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/sbc8548/ddr.c b/board/sbc8548/ddr.c
new file mode 100644
index 0000000..f07d746
--- /dev/null
+++ b/board/sbc8548/ddr.c
@@ -0,0 +1,80 @@
+/*
+ * 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_ddr_freq(0);
+}
+
+void fsl_ddr_get_spd(ddr2_spd_eeprom_t *ctrl_dimms_spd,
+ unsigned int ctrl_num)
+{
+ unsigned int i;
+
+ if (ctrl_num) {
+ printf("%s unexpected ctrl_num = %u\n", __FUNCTION__, ctrl_num);
+ return;
+ }
+
+ for (i = 0; i < CONFIG_DIMM_SLOTS_PER_CTLR; i++) {
+ get_spd(&(ctrl_dimms_spd[i]), SPD_EEPROM_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/sbc8548/sbc8548.c b/board/sbc8548/sbc8548.c
index 91b40e5..f31d7d6 100644
--- a/board/sbc8548/sbc8548.c
+++ b/board/sbc8548/sbc8548.c
@@ -30,6 +30,7 @@
#include <asm/processor.h>
#include <asm/immap_85xx.h>
#include <asm/immap_fsl_pci.h>
+#include <asm/fsl_ddr_sdram.h>
#include <spd_sdram.h>
#include <miiphy.h>
#include <libfdt.h>
@@ -106,7 +107,9 @@ initdram(int board_type)
#endif
#if defined(CONFIG_SPD_EEPROM)
- dram_size = spd_sdram ();
+ dram_size = fsl_ddr_sdram();
+ dram_size = setup_ddr_tlbs(dram_size / 0x100000);
+ dram_size *= 0x100000;
#else
dram_size = fixed_sdram ();
#endif
diff --git a/include/configs/sbc8548.h b/include/configs/sbc8548.h
index b4238e5..9ef0bfd 100644
--- a/include/configs/sbc8548.h
+++ b/include/configs/sbc8548.h
@@ -47,19 +47,11 @@
#define CONFIG_TSEC_ENET /* tsec ethernet support */
#define CONFIG_ENV_OVERWRITE
-#undef CONFIG_SPD_EEPROM /* Use SPD EEPROM for DDR setup*/
-#define 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_INTERRUPTS /* enable pci, srio, ddr interrupts */
#define CONFIG_FSL_LAW 1 /* Use common FSL init code */
-#define MPC85xx_DDR_SDRAM_CLK_CNTL /* 85xx has clock control reg */
-
#define CONFIG_SYS_CLK_FREQ 66000000 /* SBC8548 default SYSCLK */
/*
@@ -94,13 +86,26 @@
#define CFG_PCI2_ADDR (CFG_CCSRBAR+0x9000)
#define CFG_PCIE1_ADDR (CFG_CCSRBAR+0xa000)
-/*
- * DDR Setup
- */
-#define CFG_DDR_SDRAM_BASE 0x00000000 /* DDR is system memory*/
+/* DDR Setup */
+#define CONFIG_FSL_DDR2
+#undef CONFIG_FSL_DDR_INTERACTIVE
+#undef CONFIG_SPD_EEPROM /* Use SPD EEPROM for DDR setup */
+#undef CONFIG_DDR_SPD
+#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 CFG_DDR_SDRAM_BASE 0x00000000
#define CFG_SDRAM_BASE CFG_DDR_SDRAM_BASE
+#define CONFIG_VERY_BIG_RAM
+
+#define CONFIG_NUM_DDR_CONTROLLERS 1
+#define CONFIG_DIMM_SLOTS_PER_CTLR 1
+#define CONFIG_CHIP_SELECTS_PER_CTRL 2
-#define SPD_EEPROM_ADDRESS 0x51 /* DDR DIMM */
+/* I2C addresses of SPD EEPROMs */
+#define SPD_EEPROM_ADDRESS 0x51 /* CTLR 0 DIMM 0 */
/*
* Make sure required options are set
--
1.5.5.1
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