diff options
Diffstat (limited to 'board/sbc8548')
| -rw-r--r-- | board/sbc8548/Makefile | 9 | ||||
| -rw-r--r-- | board/sbc8548/ddr.c | 80 | ||||
| -rw-r--r-- | board/sbc8548/sbc8548.c | 5 |
3 files changed, 90 insertions, 4 deletions
diff --git a/board/sbc8548/Makefile b/board/sbc8548/Makefile index bb96d95..9919a6e 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 0000000..f07d746 --- /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 91b40e5..f31d7d6 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 |