Signed-off-by: Kumar Gala galak@kernel.crashing.org --- board/sbc8548/Makefile | 9 +++-- board/sbc8548/ddr.c | 80 +++++++++++++++++++++++++++++++++++++++++++++ board/sbc8548/sbc8548.c | 5 ++- include/configs/sbc8548.h | 31 ++++++++++------- 4 files changed, 108 insertions(+), 17 deletions(-) create mode 100644 board/sbc8548/ddr.c
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 diff --git a/include/configs/sbc8548.h b/include/configs/sbc8548.h index b4238e5..9ef0bfd 100644 --- a/include/configs/sbc8548.h +++ b/include/configs/sbc8548.h @@ -47,19 +47,11 @@
#define CONFIG_TSEC_ENET /* tsec ethernet support */ #define CONFIG_ENV_OVERWRITE -#undef CONFIG_SPD_EEPROM /* Use SPD EEPROM for DDR setup*/ -#define CONFIG_DDR_DLL /* possible DLL fix needed */ -#define CONFIG_DDR_2T_TIMING /* Sets the 2T timing bit */
-#undef 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_INTERRUPTS /* enable pci, srio, ddr interrupts */
#define CONFIG_FSL_LAW 1 /* Use common FSL init code */
-#define MPC85xx_DDR_SDRAM_CLK_CNTL /* 85xx has clock control reg */ - #define CONFIG_SYS_CLK_FREQ 66000000 /* SBC8548 default SYSCLK */
/* @@ -94,13 +86,26 @@ #define CFG_PCI2_ADDR (CFG_CCSRBAR+0x9000) #define CFG_PCIE1_ADDR (CFG_CCSRBAR+0xa000)
-/* - * DDR Setup - */ -#define CFG_DDR_SDRAM_BASE 0x00000000 /* DDR is system memory*/ +/* DDR Setup */ +#define CONFIG_FSL_DDR2 +#undef CONFIG_FSL_DDR_INTERACTIVE +#undef CONFIG_SPD_EEPROM /* Use SPD EEPROM for DDR setup */ +#undef CONFIG_DDR_SPD +#undef 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 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
-#define SPD_EEPROM_ADDRESS 0x51 /* DDR DIMM */ +/* I2C addresses of SPD EEPROMs */ +#define SPD_EEPROM_ADDRESS 0x51 /* CTLR 0 DIMM 0 */
/* * Make sure required options are set