From: Kumar Gala <galak@kernel.crashing.org>
Date: Wed, 27 Aug 2008 04:15:28 +0000 (-0500)
Subject: FSL DDR: Convert sbc8548 to new DDR code.
X-Git-Tag: v2008.10-rc1~78^2~11
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=33b9079ba20926f14238fff863b68a98e938948e;p=karo-tx-uboot.git

FSL DDR: Convert sbc8548 to new DDR code.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---

diff --git a/board/sbc8548/Makefile b/board/sbc8548/Makefile
index bb96d95a3a..9919a6efe0 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 0000000000..f07d746c20
--- /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 91b40e59f0..f31d7d6477 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 b4238e566f..9ef0bfdd86 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