[U-Boot] [PATCH 04/24] FSL DDR: Convert MPC8540ADS to new DDR code.
Kumar Gala
galak at kernel.crashing.org
Wed Aug 27 08:10:37 CEST 2008
Signed-off-by: Kumar Gala <galak at kernel.crashing.org>
---
board/freescale/mpc8540ads/Makefile | 13 ++++--
board/freescale/mpc8540ads/ddr.c | 70 +++++++++++++++++++++++++++++++
board/freescale/mpc8540ads/mpc8540ads.c | 14 ++++--
include/configs/MPC8540ADS.h | 53 ++++++++++-------------
4 files changed, 110 insertions(+), 40 deletions(-)
create mode 100644 board/freescale/mpc8540ads/ddr.c
diff --git a/board/freescale/mpc8540ads/Makefile b/board/freescale/mpc8540ads/Makefile
index 2d71cbc..4c6da4d 100644
--- a/board/freescale/mpc8540ads/Makefile
+++ b/board/freescale/mpc8540ads/Makefile
@@ -25,11 +25,14 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).a
-COBJS := $(BOARD).o law.o tlb.o
-
-SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS := $(addprefix $(obj),$(COBJS))
-SOBJS := $(addprefix $(obj),$(SOBJS))
+COBJS-y += $(BOARD).o
+COBJS-y += ddr.o
+COBJS-y += law.o
+COBJS-y += tlb.o
+
+SRCS := $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
+OBJS := $(addprefix $(obj),$(COBJS-y))
+SOBJS := $(addprefix $(obj),$(SOBJS-y))
$(LIB): $(obj).depend $(OBJS) $(SOBJS)
$(AR) $(ARFLAGS) $@ $(OBJS)
diff --git a/board/freescale/mpc8540ads/ddr.c b/board/freescale/mpc8540ads/ddr.c
new file mode 100644
index 0000000..45372f4
--- /dev/null
+++ b/board/freescale/mpc8540ads/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/freescale/mpc8540ads/mpc8540ads.c b/board/freescale/mpc8540ads/mpc8540ads.c
index 4f068cc..005e4d9 100644
--- a/board/freescale/mpc8540ads/mpc8540ads.c
+++ b/board/freescale/mpc8540ads/mpc8540ads.c
@@ -1,4 +1,4 @@
- /*
+/*
* Copyright 2004 Freescale Semiconductor.
* (C) Copyright 2002,2003, Motorola Inc.
* Xianghua Xiao, (X.Xiao at motorola.com)
@@ -28,8 +28,9 @@
#include <common.h>
#include <pci.h>
#include <asm/processor.h>
+#include <asm/mmu.h>
#include <asm/immap_85xx.h>
-#include <spd_sdram.h>
+#include <asm/fsl_ddr_sdram.h>
#include <libfdt.h>
#include <fdt_support.h>
@@ -82,10 +83,13 @@ initdram(int board_type)
}
#endif
-#if defined(CONFIG_SPD_EEPROM)
- dram_size = spd_sdram ();
+#ifdef CONFIG_SPD_EEPROM
+ dram_size = fsl_ddr_sdram();
+ dram_size = setup_ddr_tlbs(dram_size / 0x100000);
+
+ dram_size *= 0x100000;
#else
- dram_size = fixed_sdram ();
+ dram_size = fixed_sdram();
#endif
#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
diff --git a/include/configs/MPC8540ADS.h b/include/configs/MPC8540ADS.h
index 6351925..74f8605 100644
--- a/include/configs/MPC8540ADS.h
+++ b/include/configs/MPC8540ADS.h
@@ -48,13 +48,6 @@
#define CONFIG_PCI
#define CONFIG_TSEC_ENET /* tsec ethernet support */
#define CONFIG_ENV_OVERWRITE
-#define 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 */
-
-#define CONFIG_DDR_ECC /* only for ECC DDR module */
-#define CONFIG_MEM_INIT_VALUE 0xDeadBeef
-
#define CONFIG_FSL_LAW 1 /* Use common FSL init code */
/*
@@ -100,33 +93,33 @@
#define CFG_CCSRBAR_PHYS CFG_CCSRBAR /* physical addr of CCSRBAR */
#define CFG_IMMR CFG_CCSRBAR /* PQII uses CFG_IMMR */
+/* DDR Setup */
+#define CONFIG_FSL_DDR1
+#define CONFIG_SPD_EEPROM /* Use SPD EEPROM for DDR setup*/
+#define CONFIG_DDR_SPD
+#undef CONFIG_FSL_DDR_INTERACTIVE
+
+#define CONFIG_MEM_INIT_VALUE 0xDeadBeef
-/*
- * DDR Setup
- */
#define CFG_DDR_SDRAM_BASE 0x00000000 /* DDR is system memory*/
#define CFG_SDRAM_BASE CFG_DDR_SDRAM_BASE
-#if defined(CONFIG_SPD_EEPROM)
- /*
- * Determine DDR configuration from I2C interface.
- */
- #define SPD_EEPROM_ADDRESS 0x51 /* DDR DIMM */
-
-#else
- /*
- * Manually set up DDR parameters
- */
- #define CFG_SDRAM_SIZE 128 /* DDR is 128MB */
- #define CFG_DDR_CS0_BNDS 0x00000007 /* 0-128MB */
- #define CFG_DDR_CS0_CONFIG 0x80000002
- #define CFG_DDR_TIMING_1 0x37344321
- #define CFG_DDR_TIMING_2 0x00000800 /* P9-45,may need tuning */
- #define CFG_DDR_CONTROL 0xc2000000 /* unbuffered,no DYN_PWR */
- #define CFG_DDR_MODE 0x00000062 /* DLL,normal,seq,4/2.5 */
- #define CFG_DDR_INTERVAL 0x05200100 /* autocharge,no open page */
-#endif
-
+#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)
+
+/* I2C addresses of SPD EEPROMs */
+#define SPD_EEPROM_ADDRESS 0x51 /* CTLR 0 DIMM 0 */
+
+/* These are used when DDR doesn't use SPD. */
+#define CFG_SDRAM_SIZE 128 /* DDR is 128MB */
+#define CFG_DDR_CS0_BNDS 0x00000007 /* 0-128MB */
+#define CFG_DDR_CS0_CONFIG 0x80000002
+#define CFG_DDR_TIMING_1 0x37344321
+#define CFG_DDR_TIMING_2 0x00000800 /* P9-45,may need tuning */
+#define CFG_DDR_CONTROL 0xc2000000 /* unbuffered,no DYN_PWR */
+#define CFG_DDR_MODE 0x00000062 /* DLL,normal,seq,4/2.5 */
+#define CFG_DDR_INTERVAL 0x05200100 /* autocharge,no open page */
/*
* SDRAM on the Local Bus
--
1.5.5.1
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