diff options
Diffstat (limited to 'board')
| -rw-r--r-- | board/freescale/mpc8540ads/Makefile | 13 | ||||
| -rw-r--r-- | board/freescale/mpc8540ads/ddr.c | 70 | ||||
| -rw-r--r-- | board/freescale/mpc8540ads/mpc8540ads.c | 14 |
3 files changed, 87 insertions, 10 deletions
diff --git a/board/freescale/mpc8540ads/Makefile b/board/freescale/mpc8540ads/Makefile index 2d71cbc..4c6da4d 100644 --- a/board/freescale/mpc8540ads/Makefile +++ b/board/freescale/mpc8540ads/Makefile @@ -25,11 +25,14 @@ include $(TOPDIR)/config.mk LIB = $(obj)lib$(BOARD).a -COBJS := $(BOARD).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 += ddr.o +COBJS-y += law.o +COBJS-y += tlb.o + +SRCS := $(SOBJS:.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/mpc8540ads/ddr.c b/board/freescale/mpc8540ads/ddr.c new file mode 100644 index 0000000..45372f4 --- /dev/null +++ b/board/freescale/mpc8540ads/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/freescale/mpc8540ads/mpc8540ads.c b/board/freescale/mpc8540ads/mpc8540ads.c index 4f068cc..005e4d9 100644 --- a/board/freescale/mpc8540ads/mpc8540ads.c +++ b/board/freescale/mpc8540ads/mpc8540ads.c @@ -1,4 +1,4 @@ - /* +/* * Copyright 2004 Freescale Semiconductor. * (C) Copyright 2002,2003, Motorola Inc. * Xianghua Xiao, (X.Xiao@motorola.com) @@ -28,8 +28,9 @@ #include <common.h> #include <pci.h> #include <asm/processor.h> +#include <asm/mmu.h> #include <asm/immap_85xx.h> -#include <spd_sdram.h> +#include <asm/fsl_ddr_sdram.h> #include <libfdt.h> #include <fdt_support.h> @@ -82,10 +83,13 @@ initdram(int board_type) } #endif -#if defined(CONFIG_SPD_EEPROM) - dram_size = spd_sdram (); +#ifdef CONFIG_SPD_EEPROM + dram_size = fsl_ddr_sdram(); + dram_size = setup_ddr_tlbs(dram_size / 0x100000); + + dram_size *= 0x100000; #else - dram_size = fixed_sdram (); + dram_size = fixed_sdram(); #endif #if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER) |