diff options
Diffstat (limited to 'board/freescale')
| -rw-r--r-- | board/freescale/mpc8568mds/Makefile | 14 | ||||
| -rw-r--r-- | board/freescale/mpc8568mds/ddr.c | 81 | ||||
| -rw-r--r-- | board/freescale/mpc8568mds/mpc8568mds.c | 8 |
3 files changed, 97 insertions, 6 deletions
diff --git a/board/freescale/mpc8568mds/Makefile b/board/freescale/mpc8568mds/Makefile index ecdc4d3..d499fb3 100644 --- a/board/freescale/mpc8568mds/Makefile +++ b/board/freescale/mpc8568mds/Makefile @@ -26,11 +26,15 @@ include $(TOPDIR)/config.mk LIB = $(obj)lib$(BOARD).a -COBJS := $(BOARD).o bcsr.o law.o tlb.o - -SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) -OBJS := $(addprefix $(obj),$(COBJS)) -SOBJS := $(addprefix $(obj),$(SOBJS)) +COBJS-y += $(BOARD).o +COBJS-y += bcsr.o +COBJS-y += ddr.o +COBJS-y += law.o +COBJS-y += tlb.o + +SRCS := $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c) +OBJS := $(addprefix $(obj),$(COBJS-y)) +SOBJS := $(addprefix $(obj),$(SOBJS-y)) $(LIB): $(obj).depend $(OBJS) $(SOBJS) $(AR) $(ARFLAGS) $@ $(OBJS) diff --git a/board/freescale/mpc8568mds/ddr.c b/board/freescale/mpc8568mds/ddr.c new file mode 100644 index 0000000..1b8ecec --- /dev/null +++ b/board/freescale/mpc8568mds/ddr.c @@ -0,0 +1,81 @@ +/* + * 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 = 6; + + /* + * 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/mpc8568mds/mpc8568mds.c b/board/freescale/mpc8568mds/mpc8568mds.c index 2ccff7d..f9e35cc 100644 --- a/board/freescale/mpc8568mds/mpc8568mds.c +++ b/board/freescale/mpc8568mds/mpc8568mds.c @@ -25,8 +25,10 @@ #include <common.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 <spd_sdram.h> #include <i2c.h> #include <ioports.h> @@ -163,7 +165,10 @@ initdram(int board_type) udelay(200); } #endif - 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) /* @@ -171,6 +176,7 @@ initdram(int board_type) */ ddr_enable_ecc(dram_size); #endif + /* * SDRAM Initialization */ |