FSL DDR: Convert MPC8541CDS to new DDR code.

Signed-off-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

4 files changed, 102 insertions, 14 deletions

diff --git a/board/freescale/mpc8541cds/Makefile b/board/freescale/mpc8541cds/Makefile
index 98f1530..c19a527 100644
--- a/board/freescale/mpc8541cds/Makefile
+++ b/board/freescale/mpc8541cds/Makefile
@@ -27,6 +27,7 @@ include $(TOPDIR)/config.mk
 LIB	= $(obj)lib$(BOARD).a
 
 COBJS-y	+= $(BOARD).o
+COBJS-y	+= ddr.o
 COBJS-y	+= law.o
 COBJS-y	+= tlb.o
 
diff --git a/board/freescale/mpc8541cds/ddr.c b/board/freescale/mpc8541cds/ddr.c
new file mode 100644
index 0000000..11ce57d
--- /dev/null
+++ b/board/freescale/mpc8541cds/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(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 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 = 6;
+
+	/*
+	 * 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/mpc8541cds/mpc8541cds.c b/board/freescale/mpc8541cds/mpc8541cds.c
index 3669ba9..de3a791 100644
--- a/board/freescale/mpc8541cds/mpc8541cds.c
+++ b/board/freescale/mpc8541cds/mpc8541cds.c
@@ -25,7 +25,9 @@
 #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 <spd_sdram.h>
 #include <libfdt.h>
@@ -263,7 +265,9 @@ initdram(int board_type)
 		udelay(200);
 	}
 #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) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
 	/*
diff --git a/include/configs/MPC8541CDS.h b/include/configs/MPC8541CDS.h
index d948d76..29dff32 100644
--- a/include/configs/MPC8541CDS.h
+++ b/include/configs/MPC8541CDS.h
@@ -40,12 +40,6 @@
 #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 */
-#undef 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 */
 
@@ -59,8 +53,6 @@
  */
 #define CONFIG_ASSUME_AMD_FLASH
 
-#define MPC85xx_DDR_SDRAM_CLK_CNTL	/* 85xx has clock control reg */
-
 #ifndef __ASSEMBLY__
 extern unsigned long get_clock_freq(void);
 #endif
@@ -85,13 +77,23 @@ extern unsigned long get_clock_freq(void);
 #define CFG_CCSRBAR_PHYS	CFG_CCSRBAR	/* physical addr of CCSRBAR */
 #define CFG_IMMR		CFG_CCSRBAR	/* PQII uses CFG_IMMR */
 
-/*
- * DDR Setup
- */
+/* 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
+
 #define CFG_DDR_SDRAM_BASE	0x00000000	/* DDR is system memory*/
 #define CFG_SDRAM_BASE		CFG_DDR_SDRAM_BASE
 
-#define SPD_EEPROM_ADDRESS	0x51		/* DDR DIMM */
+#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 */
 
 /*
  * Make sure required options are set
@@ -102,7 +104,6 @@ extern unsigned long get_clock_freq(void);
 
 #undef CONFIG_CLOCKS_IN_MHZ
 
-
 /*
  * Local Bus Definitions
  */
@@ -317,6 +318,9 @@ extern unsigned long get_clock_freq(void);
 #define CONFIG_OF_BOARD_SETUP		1
 #define CONFIG_OF_STDOUT_VIA_ALIAS	1
 
+#define CFG_64BIT_VSPRINTF	1
+#define CFG_64BIT_STRTOUL	1
+
 /*
  * I2C
  */