[U-Boot] [PATCH 10/24] FSL DDR: Convert MPC8544DS to new DDR code.
Kumar Gala
galak at kernel.crashing.org
Wed Aug 27 08:10:43 CEST 2008
Signed-off-by: Kumar Gala <galak at kernel.crashing.org>
---
board/freescale/mpc8544ds/Makefile | 9 +++-
board/freescale/mpc8544ds/ddr.c | 80 +++++++++++++++++++++++++++++++++
board/freescale/mpc8544ds/mpc8544ds.c | 11 +++--
include/configs/MPC8544DS.h | 38 ++++++++-------
4 files changed, 113 insertions(+), 25 deletions(-)
create mode 100644 board/freescale/mpc8544ds/ddr.c
diff --git a/board/freescale/mpc8544ds/Makefile b/board/freescale/mpc8544ds/Makefile
index 3a5ea00..3997994 100644
--- a/board/freescale/mpc8544ds/Makefile
+++ b/board/freescale/mpc8544ds/Makefile
@@ -26,10 +26,13 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).a
-COBJS := $(BOARD).o law.o tlb.o
+COBJS-y += $(BOARD).o
+COBJS-y += ddr.o
+COBJS-y += law.o
+COBJS-y += tlb.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/mpc8544ds/ddr.c b/board/freescale/mpc8544ds/ddr.c
new file mode 100644
index 0000000..bbb5ee2
--- /dev/null
+++ b/board/freescale/mpc8544ds/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/freescale/mpc8544ds/mpc8544ds.c b/board/freescale/mpc8544ds/mpc8544ds.c
index c39ce11..4e976b7 100644
--- a/board/freescale/mpc8544ds/mpc8544ds.c
+++ b/board/freescale/mpc8544ds/mpc8544ds.c
@@ -24,10 +24,11 @@
#include <command.h>
#include <pci.h>
#include <asm/processor.h>
+#include <asm/mmu.h>
#include <asm/immap_85xx.h>
#include <asm/immap_fsl_pci.h>
+#include <asm/fsl_ddr_sdram.h>
#include <asm/io.h>
-#include <spd_sdram.h>
#include <miiphy.h>
#include <libfdt.h>
#include <fdt_support.h>
@@ -38,8 +39,6 @@
extern void ddr_enable_ecc(unsigned int dram_size);
#endif
-void sdram_init(void);
-
int checkboard (void)
{
volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR);
@@ -69,7 +68,11 @@ initdram(int board_type)
puts("Initializing\n");
- 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/MPC8544DS.h b/include/configs/MPC8544DS.h
index 9a77b7b..5738192 100644
--- a/include/configs/MPC8544DS.h
+++ b/include/configs/MPC8544DS.h
@@ -46,15 +46,6 @@
#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
-#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_DDR_ECC_CMD
#define CONFIG_INTERRUPTS /* enable pci, srio, ddr interrupts */
/*
@@ -64,8 +55,6 @@
*/
#define CONFIG_ASSUME_AMD_FLASH
-#define MPC85xx_DDR_SDRAM_CLK_CNTL /* 85xx has clock control reg */
-
#ifndef __ASSEMBLY__
extern unsigned long get_board_sys_clk(unsigned long dummy);
#endif
@@ -101,17 +90,27 @@ extern unsigned long get_board_sys_clk(unsigned long dummy);
#define CFG_PCIE2_ADDR (CFG_CCSRBAR+0x9000)
#define CFG_PCIE3_ADDR (CFG_CCSRBAR+0xb000)
-/*
- * DDR Setup
- */
-#define CFG_DDR_SDRAM_BASE 0x00000000 /* DDR is system memory*/
+/* 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
+
+#undef 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
+/* I2C addresses of SPD EEPROMs */
#define SPD_EEPROM_ADDRESS 0x51 /* DDR DIMM */
-/*
- * Make sure required options are set
- */
+/* Make sure required options are set */
#ifndef CONFIG_SPD_EEPROM
#error ("CONFIG_SPD_EEPROM is required")
#endif
@@ -242,6 +241,9 @@ extern unsigned long get_board_sys_clk(unsigned long dummy);
#define CONFIG_OF_BOARD_SETUP 1
#define CONFIG_OF_STDOUT_VIA_ALIAS 1
+#define CFG_64BIT_STRTOUL 1
+#define CFG_64BIT_VSPRINTF 1
+
/* I2C */
#define CONFIG_FSL_I2C /* Use FSL common I2C driver */
#define CONFIG_HARD_I2C /* I2C with hardware support */
--
1.5.5.1
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