[U-Boot] [PATCH 06/14] FSL DDR: Convert MPC8641HPCN to new DDR code.

Kumar Gala galak at kernel.crashing.org
Tue Aug 12 18:06:14 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>
---
 Makefile                                  |    3 +
 board/freescale/mpc8641hpcn/Makefile      |    8 +-
 board/freescale/mpc8641hpcn/ddr.c         |  262 +++++++++++++++++++++++++++++
 board/freescale/mpc8641hpcn/mpc8641hpcn.c |    5 +-
 cpu/mpc86xx/Makefile                      |    1 -
 include/configs/MPC8641HPCN.h             |  117 +++++++------
 6 files changed, 335 insertions(+), 61 deletions(-)
 create mode 100644 board/freescale/mpc8641hpcn/ddr.c

diff --git a/Makefile b/Makefile
index 082b08e..c0c359f 100644
--- a/Makefile
+++ b/Makefile
@@ -237,6 +237,9 @@ endif
 ifeq ($(CPU),mpc85xx)
 LIBS += drivers/qe/qe.a
 endif
+ifeq ($(CPU),mpc86xx)
+LIBS += cpu/mpc8xxx/libmpc8xxx.a
+endif
 LIBS += drivers/rtc/librtc.a
 LIBS += drivers/serial/libserial.a
 LIBS += drivers/usb/libusb.a
diff --git a/board/freescale/mpc8641hpcn/Makefile b/board/freescale/mpc8641hpcn/Makefile
index c096e15..27d20a0 100644
--- a/board/freescale/mpc8641hpcn/Makefile
+++ b/board/freescale/mpc8641hpcn/Makefile
@@ -25,10 +25,12 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(BOARD).a
 
-COBJS	:= $(BOARD).o law.o
+COBJS-y	+= $(BOARD).o
+COBJS-y	+= law.o
+COBJS-y	+= 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/freescale/mpc8641hpcn/ddr.c b/board/freescale/mpc8641hpcn/ddr.c
new file mode 100644
index 0000000..0116481
--- /dev/null
+++ b/board/freescale/mpc8641hpcn/ddr.c
@@ -0,0 +1,262 @@
+/*
+ * 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 <../cpu/mpc8xxx/fsl_ddr_sdram.h>
+
+#define SDRAM_TYPE_DDR1    2
+#define SDRAM_TYPE_DDR2    3
+#define SDRAM_TYPE_LPDDR1  6
+#define SDRAM_TYPE_DDR3    7
+
+
+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_sdram_get_mem_data_rate(void)
+{
+	return get_bus_freq(0);
+}
+
+
+void
+fsl_ddr_sdram_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;
+		}
+		if (ctrl_num == 0 && i == 1) {
+			i2c_address = SPD_EEPROM_ADDRESS2;
+		}
+		if (ctrl_num == 1 && i == 0) {
+			i2c_address = SPD_EEPROM_ADDRESS3;
+		}
+		if (ctrl_num == 1 && i == 1) {
+			i2c_address = SPD_EEPROM_ADDRESS4;
+		}
+		get_spd(&(ctrl_dimms_spd[i]), i2c_address);
+	}
+}
+
+
+void
+fsl_ddr_sdram_dump_memctl_regs(unsigned int ctrl_num)
+{
+	unsigned int i;
+	volatile ccsr_ddr_t *ddr;
+
+	if (ctrl_num == 0)
+		ddr = (void *)CFG_MPC86xx_DDR_ADDR;
+	else
+		ddr = (void *)CFG_MPC86xx_DDR2_ADDR;
+
+	for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
+		unsigned int bnds = 0;
+		unsigned int config = 0;
+
+		if (i == 0) {
+			bnds = ddr->cs0_bnds;
+			config = ddr->cs0_config;
+
+		} else if (i == 1) {
+			bnds = ddr->cs1_bnds;
+			config = ddr->cs1_config;
+
+		} else if (i == 2) {
+			bnds = ddr->cs2_bnds;
+			config = ddr->cs2_config;
+
+		} else if (i == 3) {
+			bnds = ddr->cs3_bnds;
+			config = ddr->cs3_config;
+
+		} else {
+			/*
+			 * FIXME what happens when CONFIG_CHIP_SELECTS_PER_CTRL > 4
+			 */
+		}
+
+		printf("cs%u_bnds           = %08X\n", i, bnds);
+		printf("cs%u_config         = %08X\n", i, config);
+	}
+
+	printf("timing_cfg_3       = %08X\n", ddr->timing_cfg_3);
+	printf("timing_cfg_0       = %08X\n", ddr->timing_cfg_0);
+	printf("timing_cfg_1       = %08X\n", ddr->timing_cfg_1);
+	printf("timing_cfg_2       = %08X\n", ddr->timing_cfg_2);
+	printf("ddr_sdram_cfg      = %08X\n", ddr->sdram_cfg_1);
+	printf("ddr_sdram_cfg_2    = %08X\n", ddr->sdram_cfg_2);
+	printf("ddr_sdram_mode     = %08X\n", ddr->sdram_mode_1);
+	printf("ddr_sdram_mode_2   = %08X\n", ddr->sdram_mode_2);
+	printf("ddr_sdram_interval = %08X\n", ddr->sdram_interval);
+	printf("ddr_data_init      = %08X\n", ddr->sdram_data_init);
+	printf("ddr_sdram_clk_cntl = %08X\n", ddr->sdram_clk_cntl);
+	printf("ddr_init_addr      = %08X\n", ddr->init_addr);
+}
+
+
+void
+fsl_ddr_sdram_set_memctl_regs(const fsl_memctl_config_regs_t *regs,
+			      unsigned int ctrl_num)
+{
+	unsigned int i;
+	volatile ccsr_ddr_t *ddr;
+
+	switch (ctrl_num) {
+	case 0:
+		ddr = (void *)CFG_MPC86xx_DDR_ADDR;
+		break;
+	case 1:
+		ddr = (void *)CFG_MPC86xx_DDR2_ADDR;
+		break;
+	default:
+		printf("fsl_ddr_sdram_set_memctl_regs() unexpected ctrl_num = %u\n", ctrl_num);
+		return;
+	}
+
+	for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
+		if (i == 0) {
+			ddr->cs0_bnds = regs->cs[i].bnds;
+			ddr->cs0_config = regs->cs[i].config;
+
+		} else if (i == 1) {
+			ddr->cs1_bnds = regs->cs[i].bnds;
+			ddr->cs1_config = regs->cs[i].config;
+
+		} else if (i == 2) {
+			ddr->cs2_bnds = regs->cs[i].bnds;
+			ddr->cs2_config = regs->cs[i].config;
+
+		} else if (i == 3) {
+			ddr->cs3_bnds = regs->cs[i].bnds;
+			ddr->cs3_config = regs->cs[i].config;
+		}
+	}
+
+	/*
+	 * Someone decided to use different names from the documentation...
+	 */
+	ddr->timing_cfg_3       = regs->timing_cfg_3;
+	ddr->timing_cfg_0       = regs->timing_cfg_0;
+	ddr->timing_cfg_1       = regs->timing_cfg_1;
+	ddr->timing_cfg_2       = regs->timing_cfg_2;
+	ddr->sdram_cfg_2        = regs->ddr_sdram_cfg_2;
+	ddr->sdram_mode_1       = regs->ddr_sdram_mode;
+	ddr->sdram_mode_2       = regs->ddr_sdram_mode_2;
+	ddr->sdram_interval     = regs->ddr_sdram_interval;
+	ddr->sdram_data_init    = regs->ddr_data_init;
+	ddr->sdram_clk_cntl     = regs->ddr_sdram_clk_cntl;
+	ddr->init_addr          = regs->ddr_init_addr;
+	ddr->init_ext_addr      = regs->ddr_init_ext_addr;
+
+	/*
+	 * FIXME: ECC?  Need to program err_disable, err_sbe, and err_int_en
+	 */
+
+	debug("before go\n");
+
+	/*
+	 * 200 painful micro-seconds must elapse between
+	 * the DDR clock setup and the DDR config enable.
+	 */
+	udelay(200);
+	asm volatile("sync;isync");
+
+	ddr->sdram_cfg_1 = regs->ddr_sdram_cfg;
+
+
+	/*
+	 * Poll DDR_SDRAM_CFG_2[D_INIT] bit until auto-data init is done
+	 */
+	while (ddr->sdram_cfg_2 & 0x10) {
+		udelay(10000);		/* throttle polling rate */
+	}
+}
+
+
+unsigned int
+fsl_ddr_sdram_type_function(void)
+{
+	return SDRAM_TYPE_DDR2;
+}
+
+
+/*
+ * factors to consider for clock adjust:
+ * 	- number of chips on bus
+ * 	- position of slot
+ * 	- DDR1 vs. DDR2?
+ * 	- ???
+ *
+ * FIXME: need to figure out the function parameters necessary to compute
+ * FIXME: a clock adjust value
+ */
+
+unsigned int
+fsl_ddr_sdram_clk_adjust_function(void)
+{
+	return 7;
+}
+
+
+/*
+ * factors to consider for CPO:
+ * 	- frequency
+ * 	- ddr1 vs. ddr2
+ *
+ * FIXME: figure out how to compute or tabulate good values for this
+ */
+
+unsigned int
+fsl_ddr_sdram_cpo_override_function(void)
+{
+	return 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
+ */
+
+unsigned int
+fsl_ddr_sdram_write_data_delay_function(void)
+{
+	return 3;
+}
+
+
+/*
+ * factors to consider for half-strength driver enable:
+ * 	- number of DIMMs installed
+ */
+
+unsigned int
+fsl_ddr_sdram_half_strength_driver_enable_function(void)
+{
+	return 0;
+}
diff --git a/board/freescale/mpc8641hpcn/mpc8641hpcn.c b/board/freescale/mpc8641hpcn/mpc8641hpcn.c
index db46953..96bb908 100644
--- a/board/freescale/mpc8641hpcn/mpc8641hpcn.c
+++ b/board/freescale/mpc8641hpcn/mpc8641hpcn.c
@@ -25,18 +25,17 @@
 #include <asm/processor.h>
 #include <asm/immap_86xx.h>
 #include <asm/immap_fsl_pci.h>
-#include <spd_sdram.h>
 #include <asm/io.h>
 #include <libfdt.h>
 #include <fdt_support.h>
 
 #include "../common/pixis.h"
+#include "../cpu/mpc8xxx/fsl_ddr_sdram.h"
 
 #if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
 extern void ddr_enable_ecc(unsigned int dram_size);
 #endif
 
-void sdram_init(void);
 long int fixed_sdram(void);
 
 
@@ -61,7 +60,7 @@ 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/cpu/mpc86xx/Makefile b/cpu/mpc86xx/Makefile
index 4227053..454c728 100644
--- a/cpu/mpc86xx/Makefile
+++ b/cpu/mpc86xx/Makefile
@@ -36,7 +36,6 @@ COBJS-y	+= cpu.o
 COBJS-y	+= cpu_init.o
 COBJS-y	+= speed.o
 COBJS-y	+= interrupts.o
-COBJS-y	+= spd_sdram.o
 
 COBJS-$(CONFIG_OF_LIBFDT) += fdt.o
 
diff --git a/include/configs/MPC8641HPCN.h b/include/configs/MPC8641HPCN.h
index cd35494..ccba409 100644
--- a/include/configs/MPC8641HPCN.h
+++ b/include/configs/MPC8641HPCN.h
@@ -54,19 +54,6 @@
 #define CONFIG_TSEC_ENET		/* tsec ethernet support */
 #define CONFIG_ENV_OVERWRITE
 
-#define CONFIG_SPD_EEPROM		/* Use SPD EEPROM for DDR setup*/
-#undef 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_ECC_INIT_VIA_DDRCONTROLLER	/* DDR controller or DMA? */
-#define CONFIG_MEM_INIT_VALUE		0xDeadBeef
-#define CONFIG_NUM_DDR_CONTROLLERS     2
-/* #define CONFIG_DDR_INTERLEAVE	       1 */
-#define CACHE_LINE_INTERLEAVING		0x20000000
-#define PAGE_INTERLEAVING		0x21000000
-#define BANK_INTERLEAVING		0x22000000
-#define SUPER_BANK_INTERLEAVING		0x23000000
-
 #define CONFIG_HIGH_BATS	1	/* High BATs supported and enabled */
 
 #define CONFIG_ALTIVEC		1
@@ -104,53 +91,75 @@ extern unsigned long get_board_sys_clk(unsigned long dummy);
 /*
  * DDR Setup
  */
+#define CONFIG_FSL_DDR2
+#undef CONFIG_FSL_DDR_INTERACTIVE
+#define CONFIG_SPD_EEPROM		/* Use SPD EEPROM for DDR setup */
+#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 */
-    #define SPD_EEPROM_ADDRESS2		0x52		/* DDR DIMM */
-    #define SPD_EEPROM_ADDRESS3		0x53		/* DDR DIMM */
-    #define SPD_EEPROM_ADDRESS4		0x54		/* DDR DIMM */
 
-#else
-    /*
-     * Manually set up DDR1 parameters
-     */
-
-    #define CFG_SDRAM_SIZE	256		/* DDR is 256MB */
-
-    #define CFG_DDR_CS0_BNDS	0x0000000F
-    #define CFG_DDR_CS0_CONFIG	0x80010102	/* Enable, no interleaving */
-    #define CFG_DDR_EXT_REFRESH 0x00000000
-    #define CFG_DDR_TIMING_0	0x00260802
-    #define CFG_DDR_TIMING_1	0x39357322
-    #define CFG_DDR_TIMING_2	0x14904cc8
-    #define CFG_DDR_MODE_1	0x00480432
-    #define CFG_DDR_MODE_2	0x00000000
-    #define CFG_DDR_INTERVAL	0x06090100
-    #define CFG_DDR_DATA_INIT	0xdeadbeef
-    #define CFG_DDR_CLK_CTRL	0x03800000
-    #define CFG_DDR_OCD_CTRL	0x00000000
-    #define CFG_DDR_OCD_STATUS	0x00000000
-    #define CFG_DDR_CONTROL	0xe3008000	/* Type = DDR2 */
-    #define CFG_DDR_CONTROL2	0x04400000
-
-    /* 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 */
-    #define CFG_DDR_CS3_BNDS	0x00000FFF	/* Not done */
-    #define CFG_DDR_CS4_BNDS	0x00000FFF	/* Not done */
-    #define CFG_DDR_CS5_BNDS	0x00000FFF	/* Not done */
-#endif
+/*
+ * Number of memory controllers on device
+ */
+#define CONFIG_NUM_DDR_CONTROLLERS	2
+
+/*
+ * Number of DIMM slots per memory controller
+ */
+#define CONFIG_DIMM_SLOTS_PER_CTLR	2
+
+/*
+ * Number of chip selects per memory controller
+ */
+#define CONFIG_CHIP_SELECTS_PER_CTRL	(2 * CONFIG_DIMM_SLOTS_PER_CTLR)
+
+/*
+ * I2C addresses of SPD EEPROMs
+ */
+#define SPD_EEPROM_ADDRESS1	0x51	/* CTLR 0 DIMM 0 */
+#define SPD_EEPROM_ADDRESS2	0x52	/* CTLR 0 DIMM 1 */
+#define SPD_EEPROM_ADDRESS3	0x53	/* CTLR 1 DIMM 0 */
+#define SPD_EEPROM_ADDRESS4	0x54	/* CTLR 1 DIMM 1 */
+
+
+/*
+ * These are used when DDR doesn't use SPD.
+ */
+#define CFG_SDRAM_SIZE		256		/* DDR is 256MB */
+#define CFG_DDR_CS0_BNDS	0x0000000F
+#define CFG_DDR_CS0_CONFIG	0x80010102      /* Enable, no interleaving */
+#define CFG_DDR_TIMING_3	0x00000000
+#define CFG_DDR_TIMING_0	0x00260802
+#define CFG_DDR_TIMING_1	0x39357322
+#define CFG_DDR_TIMING_2	0x14904cc8
+#define CFG_DDR_MODE_1		0x00480432
+#define CFG_DDR_MODE_2		0x00000000
+#define CFG_DDR_INTERVAL	0x06090100
+#define CFG_DDR_DATA_INIT	0xdeadbeef
+#define CFG_DDR_CLK_CTRL	0x03800000
+#define CFG_DDR_OCD_CTRL	0x00000000
+#define CFG_DDR_OCD_STATUS	0x00000000
+#define CFG_DDR_CONTROL		0xe3008000	/* Type = DDR2 */
+#define CFG_DDR_CONTROL2	0x04400000
+
+/*
+ * 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 */
+#define CFG_DDR_CS3_BNDS	0x00000FFF	/* Not done */
+#define CFG_DDR_CS4_BNDS	0x00000FFF	/* Not done */
+#define CFG_DDR_CS5_BNDS	0x00000FFF	/* Not done */
+
 
 #define CONFIG_ID_EEPROM
 #define CFG_I2C_EEPROM_NXID
-- 
1.5.5.1




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