leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

FSL DDR: Convert MPC8540ADS to new DDR code.

Browse Source 
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Kumar Gala 2008-06-06 13:12:18 -05:00
parent 2a6c2d7ab2
commit 9617c8d49a
4 changed files with 107 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
board/freescale/mpc8540ads/Makefile
View File

@ -25,11 +25,14 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).a
COBJS := $(BOARD).o law.o tlb.o
COBJS-y += $(BOARD).o
COBJS-y += ddr.o
COBJS-y += law.o
COBJS-y += tlb.o
SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(COBJS))
SOBJS := $(addprefix $(obj),$(SOBJS))
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)

70
board/freescale/mpc8540ads/ddr.c Normal file
View File

@ -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;
}

14
board/freescale/mpc8540ads/mpc8540ads.c
View File

@ -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)

49
include/configs/MPC8540ADS.h
View File

@ -48,13 +48,6 @@
#define CONFIG_PCI
#define CONFIG_TSEC_ENET /* tsec ethernet support */
#define CONFIG_ENV_OVERWRITE
#define 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 */
#define CONFIG_DDR_ECC /* only for ECC DDR module */
#define CONFIG_MEM_INIT_VALUE 0xDeadBeef
#define CONFIG_FSL_LAW 1 /* Use common FSL init code */
/*
@ -100,33 +93,33 @@
#define CFG_CCSRBAR_PHYS CFG_CCSRBAR /* physical addr of CCSRBAR */
#define CFG_IMMR CFG_CCSRBAR /* PQII uses CFG_IMMR */
/* DDR Setup */
#define CONFIG_FSL_DDR1
#define CONFIG_SPD_EEPROM /* Use SPD EEPROM for DDR setup*/
#define CONFIG_DDR_SPD
#undef CONFIG_FSL_DDR_INTERACTIVE
#define CONFIG_MEM_INIT_VALUE 0xDeadBeef
/*
* DDR Setup
*/
#define CFG_DDR_SDRAM_BASE 0x00000000 /* DDR is system memory*/
#define CFG_SDRAM_BASE CFG_DDR_SDRAM_BASE
#if defined(CONFIG_SPD_EEPROM)
/*
* Determine DDR configuration from I2C interface.
*/
#define SPD_EEPROM_ADDRESS 0x51 /* DDR DIMM */
#define CONFIG_NUM_DDR_CONTROLLERS 1
#define CONFIG_DIMM_SLOTS_PER_CTLR 1
#define CONFIG_CHIP_SELECTS_PER_CTRL (2 * CONFIG_DIMM_SLOTS_PER_CTLR)
#else
/*
* Manually set up DDR parameters
*/
#define CFG_SDRAM_SIZE 128 /* DDR is 128MB */
#define CFG_DDR_CS0_BNDS 0x00000007 /* 0-128MB */
#define CFG_DDR_CS0_CONFIG 0x80000002
#define CFG_DDR_TIMING_1 0x37344321
#define CFG_DDR_TIMING_2 0x00000800 /* P9-45,may need tuning */
#define CFG_DDR_CONTROL 0xc2000000 /* unbuffered,no DYN_PWR */
#define CFG_DDR_MODE 0x00000062 /* DLL,normal,seq,4/2.5 */
#define CFG_DDR_INTERVAL 0x05200100 /* autocharge,no open page */
#endif
/* I2C addresses of SPD EEPROMs */
#define SPD_EEPROM_ADDRESS 0x51 /* CTLR 0 DIMM 0 */
/* These are used when DDR doesn't use SPD. */
#define CFG_SDRAM_SIZE 128 /* DDR is 128MB */
#define CFG_DDR_CS0_BNDS 0x00000007 /* 0-128MB */
#define CFG_DDR_CS0_CONFIG 0x80000002
#define CFG_DDR_TIMING_1 0x37344321
#define CFG_DDR_TIMING_2 0x00000800 /* P9-45,may need tuning */
#define CFG_DDR_CONTROL 0xc2000000 /* unbuffered,no DYN_PWR */
#define CFG_DDR_MODE 0x00000062 /* DLL,normal,seq,4/2.5 */
#define CFG_DDR_INTERVAL 0x05200100 /* autocharge,no open page */
/*
* SDRAM on the Local Bus