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FSL DDR: Convert MPC8540EVAL to new DDR code.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Kumar Gala
parent
6bfa8f723c
commit
9658bec2e8
4 changed files with 101 additions and 11 deletions
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@ -25,10 +25,14 @@ include $(TOPDIR)/config.mk
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LIB = $(obj)lib$(BOARD).a
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COBJS := $(BOARD).o flash.o law.o tlb.o
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COBJS-y += $(BOARD).o
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COBJS-y += law.o
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COBJS-y += tlb.o
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COBJS-y += flash.o
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COBJS-$(CONFIG_FSL_DDR1) += ddr.o
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SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
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OBJS := $(addprefix $(obj),$(COBJS))
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SRCS := $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
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OBJS := $(addprefix $(obj),$(COBJS-y))
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SOBJS := $(addprefix $(obj),$(SOBJS))
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$(LIB): $(obj).depend $(OBJS) $(SOBJS)
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70
board/mpc8540eval/ddr.c
Normal file
70
board/mpc8540eval/ddr.c
Normal file
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@ -0,0 +1,70 @@
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/*
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* Copyright 2008 Freescale Semiconductor, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* Version 2 as published by the Free Software Foundation.
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*/
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#include <common.h>
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#include <i2c.h>
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#include <asm/fsl_ddr_sdram.h>
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static void
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get_spd(ddr1_spd_eeprom_t *spd, unsigned char i2c_address)
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{
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i2c_read(i2c_address, 0, 1, (uchar *)spd, sizeof(ddr1_spd_eeprom_t));
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}
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unsigned int
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fsl_ddr_get_mem_data_rate(void)
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{
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return get_ddr_freq(0);
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}
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void
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fsl_ddr_get_spd(ddr1_spd_eeprom_t *ctrl_dimms_spd,
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unsigned int ctrl_num)
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{
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unsigned int i;
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unsigned int i2c_address = 0;
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for (i = 0; i < CONFIG_DIMM_SLOTS_PER_CTLR; i++) {
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if (ctrl_num == 0 && i == 0) {
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i2c_address = SPD_EEPROM_ADDRESS;
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}
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get_spd(&(ctrl_dimms_spd[i]), i2c_address);
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}
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}
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void fsl_ddr_board_options(memctl_options_t *popts, unsigned int ctrl_num)
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{
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/*
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* Factors to consider for CPO:
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* - frequency
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* - ddr1 vs. ddr2
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*/
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popts->cpo_override = 0;
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/*
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* Factors to consider for write data delay:
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* - number of DIMMs
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*
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* 1 = 1/4 clock delay
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* 2 = 1/2 clock delay
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* 3 = 3/4 clock delay
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* 4 = 1 clock delay
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* 5 = 5/4 clock delay
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* 6 = 3/2 clock delay
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*/
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popts->write_data_delay = 3;
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/*
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* Factors to consider for half-strength driver enable:
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* - number of DIMMs installed
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*/
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popts->half_strength_driver_enable = 0;
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}
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@ -25,7 +25,9 @@
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#include <common.h>
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#include <asm/processor.h>
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#include <asm/mmu.h>
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#include <asm/immap_85xx.h>
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#include <asm/fsl_ddr_sdram.h>
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#include <spd_sdram.h>
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long int fixed_sdram (void);
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@ -84,7 +86,9 @@ phys_size_t initdram (int board_type)
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#endif
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#if defined(CONFIG_SPD_EEPROM)
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dram_size = spd_sdram ();
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dram_size = fsl_ddr_sdram();
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dram_size = setup_ddr_tlbs(dram_size / 0x100000);
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dram_size *= 0x100000;
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#else
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dram_size = fixed_sdram ();
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#endif
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@ -39,9 +39,6 @@
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#undef CONFIG_PCI /* pci ethernet support */
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#define CONFIG_TSEC_ENET /* tsec ethernet support */
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#define CONFIG_ENV_OVERWRITE
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#define CONFIG_SPD_EEPROM /* Use SPD EEPROM for DDR setup */
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#undef CONFIG_DDR_ECC /* only for ECC DDR module */
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#define CONFIG_DDR_DLL /* possible DLL fix needed */
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#define CONFIG_FSL_LAW 1 /* Use common FSL init code */
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@ -86,8 +83,6 @@
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#define CFG_CCSRBAR_PHYS CFG_CCSRBAR /* physical addr of CCSRBAR */
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#define CFG_IMMR CFG_CCSRBAR /* PQII uses CFG_IMMR */
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#define CFG_DDR_SDRAM_BASE 0x00000000 /* DDR is system memory */
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#define CFG_SDRAM_BASE CFG_DDR_SDRAM_BASE
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#define CFG_SDRAM_SIZE 256 /* DDR is now 256MB */
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#if defined(CONFIG_RAM_AS_FLASH)
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@ -121,10 +116,27 @@
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#undef CFG_RAMBOOT
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#endif
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#define SPD_EEPROM_ADDRESS 0x51 /* DDR DIMM */
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/* DDR Setup */
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#define CONFIG_FSL_DDR1
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#undef CONFIG_FSL_DDR_INTERACTIVE
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#define CONFIG_SPD_EEPROM /* Use SPD EEPROM for DDR setup */
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#define CONFIG_DDR_SPD
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#define CONFIG_DDR_DLL /* possible DLL fix needed */
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/* Here some DDR setting should be added */
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#undef CONFIG_DDR_ECC /* only for ECC DDR module */
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#undef CONFIG_ECC_INIT_VIA_DDRCONTROLLER /* DDR controller or DMA? */
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#define CONFIG_MEM_INIT_VALUE 0xDeadBeef
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#define CFG_DDR_SDRAM_BASE 0x00000000
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#define CFG_SDRAM_BASE CFG_DDR_SDRAM_BASE
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#define CONFIG_VERY_BIG_RAM
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#define CONFIG_NUM_DDR_CONTROLLERS 1
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#define CONFIG_DIMM_SLOTS_PER_CTLR 1
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#define CONFIG_CHIP_SELECTS_PER_CTRL 2
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/* I2C addresses of SPD EEPROMs */
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#define SPD_EEPROM_ADDRESS 0x51 /* CTLR 0 DIMM 0 */
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#undef CONFIG_CLOCKS_IN_MHZ
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