Signed-off-by: Kumar Gala galak@kernel.crashing.org --- board/pm856/Makefile | 9 ++++-- board/pm856/ddr.c | 70 +++++++++++++++++++++++++++++++++++++++++++++++ board/pm856/pm856.c | 6 +++- include/configs/PM856.h | 58 +++++++++++++++++++-------------------- 4 files changed, 109 insertions(+), 34 deletions(-) create mode 100644 board/pm856/ddr.c
diff --git a/board/pm856/Makefile b/board/pm856/Makefile index 2d71cbc..52a756c 100644 --- a/board/pm856/Makefile +++ b/board/pm856/Makefile @@ -25,10 +25,13 @@ 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_DDR1) += 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/pm856/ddr.c b/board/pm856/ddr.c new file mode 100644 index 0000000..45372f4 --- /dev/null +++ b/board/pm856/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/pm856/pm856.c b/board/pm856/pm856.c index bf325f8..bd4c065 100644 --- a/board/pm856/pm856.c +++ b/board/pm856/pm856.c @@ -28,7 +28,9 @@ #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 <miiphy.h> @@ -260,7 +262,9 @@ 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/PM856.h b/include/configs/PM856.h index b2cf060..244f09a 100644 --- a/include/configs/PM856.h +++ b/include/configs/PM856.h @@ -45,11 +45,6 @@ #define CONFIG_PCI #define CONFIG_TSEC_ENET /* tsec ethernet support */ #define CONFIG_ENV_OVERWRITE -#undef CONFIG_SPD_EEPROM /* do not use SPD EEPROM for DDR setup*/ -#define CONFIG_DDR_ECC /* only for ECC DDR module */ -#define CONFIG_DDR_DLL /* possible DLL fix needed */ -#define CONFIG_DDR_2T_TIMING /* Sets the 2T timing bit */ -#define CONFIG_MEM_INIT_VALUE 0xDEADBEEF
#define CONFIG_FSL_LAW 1 /* Use common FSL init code */
@@ -97,33 +92,36 @@ #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 +#undef CONFIG_FSL_DDR_INTERACTIVE +#undef CONFIG_SPD_EEPROM /* Use SPD EEPROM for DDR setup */ +#undef CONFIG_DDR_SPD +#define CONFIG_DDR_DLL /* possible DLL fix needed */ +#define CONFIG_DDR_ECC /* only for ECC DDR module */
-/* - * 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 0x58 /* DDR DIMM */ - -#else - /* - * Manually set up DDR parameters - */ - #define CFG_SDRAM_SIZE 256 /* DDR is 256 MB */ - #define CFG_DDR_CS0_BNDS 0x0000000f /* 0-256MB */ - #define CFG_DDR_CS0_CONFIG 0x80000102 - #define CFG_DDR_TIMING_1 0x47444321 - #define CFG_DDR_TIMING_2 0x00000800 /* P9-45,may need tuning */ - #define CFG_DDR_CONTROL 0xc2008000 /* unbuffered,no DYN_PWR */ - #define CFG_DDR_MODE 0x00000062 /* DLL,normal,seq,4/2.5 */ - #define CFG_DDR_INTERVAL 0x045b0100 /* autocharge,no open page */ -#endif +#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 0x58 /* CTLR 0 DIMM 0 */ + +/* Manually set up DDR parameters */ +#define CFG_SDRAM_SIZE 256 /* DDR is 256 MB */ +#define CFG_DDR_CS0_BNDS 0x0000000f /* 0-256MB */ +#define CFG_DDR_CS0_CONFIG 0x80000102 +#define CFG_DDR_TIMING_1 0x47444321 +#define CFG_DDR_TIMING_2 0x00000800 /* P9-45,may need tuning */ +#define CFG_DDR_CONTROL 0xc2008000 /* unbuffered,no DYN_PWR */ +#define CFG_DDR_MODE 0x00000062 /* DLL,normal,seq,4/2.5 */ +#define CFG_DDR_INTERVAL 0x045b0100 /* autocharge,no open page */
/* * SDRAM on the Local Bus