From: Jon Loeliger jdl@freescale.com
Signed-off-by: Jon Loeliger jdl@freescale.com Signed-off-by: Kumar Gala galak@kernel.crashing.org --- board/freescale/mpc8541cds/Makefile | 1 + board/freescale/mpc8541cds/ddr.c | 79 +++++++++++++++++++++++++++++++ board/freescale/mpc8541cds/mpc8541cds.c | 6 ++- include/configs/MPC8541CDS.h | 30 +++++++----- 4 files changed, 102 insertions(+), 14 deletions(-) create mode 100644 board/freescale/mpc8541cds/ddr.c
diff --git a/board/freescale/mpc8541cds/Makefile b/board/freescale/mpc8541cds/Makefile index 98f1530..c19a527 100644 --- a/board/freescale/mpc8541cds/Makefile +++ b/board/freescale/mpc8541cds/Makefile @@ -27,6 +27,7 @@ include $(TOPDIR)/config.mk LIB = $(obj)lib$(BOARD).a
COBJS-y += $(BOARD).o +COBJS-y += ddr.o COBJS-y += law.o COBJS-y += tlb.o
diff --git a/board/freescale/mpc8541cds/ddr.c b/board/freescale/mpc8541cds/ddr.c new file mode 100644 index 0000000..11ce57d --- /dev/null +++ b/board/freescale/mpc8541cds/ddr.c @@ -0,0 +1,79 @@ +/* + * 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 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 = 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/mpc8541cds/mpc8541cds.c b/board/freescale/mpc8541cds/mpc8541cds.c index 3669ba9..de3a791 100644 --- a/board/freescale/mpc8541cds/mpc8541cds.c +++ b/board/freescale/mpc8541cds/mpc8541cds.c @@ -25,7 +25,9 @@ #include <common.h> #include <pci.h> #include <asm/processor.h> +#include <asm/mmu.h> #include <asm/immap_85xx.h> +#include <asm/fsl_ddr_sdram.h> #include <ioports.h> #include <spd_sdram.h> #include <libfdt.h> @@ -263,7 +265,9 @@ 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) /* diff --git a/include/configs/MPC8541CDS.h b/include/configs/MPC8541CDS.h index d948d76..29dff32 100644 --- a/include/configs/MPC8541CDS.h +++ b/include/configs/MPC8541CDS.h @@ -40,12 +40,6 @@ #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 */ -#undef 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 */
@@ -59,8 +53,6 @@ */ #define CONFIG_ASSUME_AMD_FLASH
-#define MPC85xx_DDR_SDRAM_CLK_CNTL /* 85xx has clock control reg */ - #ifndef __ASSEMBLY__ extern unsigned long get_clock_freq(void); #endif @@ -85,13 +77,23 @@ extern unsigned long get_clock_freq(void); #define CFG_CCSRBAR_PHYS CFG_CCSRBAR /* physical addr of CCSRBAR */ #define CFG_IMMR CFG_CCSRBAR /* PQII uses CFG_IMMR */
-/* - * DDR Setup - */ +/* 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 + #define CFG_DDR_SDRAM_BASE 0x00000000 /* DDR is system memory*/ #define CFG_SDRAM_BASE CFG_DDR_SDRAM_BASE
-#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) + +/* I2C addresses of SPD EEPROMs */ +#define SPD_EEPROM_ADDRESS 0x51 /* CTLR 0 DIMM 0 */
/* * Make sure required options are set @@ -102,7 +104,6 @@ extern unsigned long get_clock_freq(void);
#undef CONFIG_CLOCKS_IN_MHZ
- /* * Local Bus Definitions */ @@ -317,6 +318,9 @@ extern unsigned long get_clock_freq(void); #define CONFIG_OF_BOARD_SETUP 1 #define CONFIG_OF_STDOUT_VIA_ALIAS 1
+#define CFG_64BIT_VSPRINTF 1 +#define CFG_64BIT_STRTOUL 1 + /* * I2C */