[U-Boot] [PATCH v5 08/10] FSL DDR: Convert MPC8610HPCD to new DDR code.
Kumar Gala
galak at kernel.crashing.org
Tue Aug 26 22:01:36 CEST 2008
From: Jon Loeliger <jdl at freescale.com>
Signed-off-by: Jon Loeliger <jdl at freescale.com>
Signed-off-by: Kumar Gala <galak at 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
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