From 6a8e5692933e8e6d6e5ba7e594f49dd6d4c3a263 Mon Sep 17 00:00:00 2001 From: Kumar Gala Date: Tue, 26 Aug 2008 15:01:35 -0500 Subject: [PATCH] FSL DDR: Convert MPC8641HPCN to new DDR code. Signed-off-by: Jon Loeliger Signed-off-by: Kumar Gala --- board/freescale/mpc8641hpcn/Makefile | 8 ++- board/freescale/mpc8641hpcn/ddr.c | 88 +++++++++++++++++++++++++ board/freescale/mpc8641hpcn/mpc8641hpcn.c | 6 +- include/configs/MPC8641HPCN.h | 103 +++++++++++++++--------------- 4 files changed, 145 insertions(+), 60 deletions(-) create mode 100644 board/freescale/mpc8641hpcn/ddr.c diff --git a/board/freescale/mpc8641hpcn/Makefile b/board/freescale/mpc8641hpcn/Makefile index c096e15..c78b0a8 100644 --- a/board/freescale/mpc8641hpcn/Makefile +++ b/board/freescale/mpc8641hpcn/Makefile @@ -25,10 +25,12 @@ include $(TOPDIR)/config.mk LIB = $(obj)lib$(BOARD).a -COBJS := $(BOARD).o law.o +COBJS-y += $(BOARD).o +COBJS-y += law.o +COBJS-$(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/freescale/mpc8641hpcn/ddr.c b/board/freescale/mpc8641hpcn/ddr.c new file mode 100644 index 0000000..5163abf --- /dev/null +++ b/board/freescale/mpc8641hpcn/ddr.c @@ -0,0 +1,88 @@ +/* + * 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 +#include + +#include + +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_bus_freq(0); +} + +void fsl_ddr_get_spd(ddr2_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_ADDRESS1; + } + if (ctrl_num == 0 && i == 1) { + i2c_address = SPD_EEPROM_ADDRESS2; + } + if (ctrl_num == 1 && i == 0) { + i2c_address = SPD_EEPROM_ADDRESS3; + } + if (ctrl_num == 1 && i == 1) { + i2c_address = SPD_EEPROM_ADDRESS4; + } + 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 = 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/freescale/mpc8641hpcn/mpc8641hpcn.c b/board/freescale/mpc8641hpcn/mpc8641hpcn.c index db46953..1bb563e 100644 --- a/board/freescale/mpc8641hpcn/mpc8641hpcn.c +++ b/board/freescale/mpc8641hpcn/mpc8641hpcn.c @@ -25,7 +25,7 @@ #include #include #include -#include +#include #include #include #include @@ -36,10 +36,8 @@ extern void ddr_enable_ecc(unsigned int dram_size); #endif -void sdram_init(void); long int fixed_sdram(void); - int board_early_init_f(void) { return 0; @@ -61,7 +59,7 @@ initdram(int board_type) long dram_size = 0; #if defined(CONFIG_SPD_EEPROM) - dram_size = spd_sdram(); + dram_size = fsl_ddr_sdram(); #else dram_size = fixed_sdram(); #endif diff --git a/include/configs/MPC8641HPCN.h b/include/configs/MPC8641HPCN.h index 468fd08..54a0461 100644 --- a/include/configs/MPC8641HPCN.h +++ b/include/configs/MPC8641HPCN.h @@ -54,19 +54,6 @@ #define CONFIG_TSEC_ENET /* tsec ethernet support */ #define CONFIG_ENV_OVERWRITE -#define CONFIG_SPD_EEPROM /* Use SPD EEPROM for DDR setup*/ -#undef 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_ECC_INIT_VIA_DDRCONTROLLER /* DDR controller or DMA? */ -#define CONFIG_MEM_INIT_VALUE 0xDeadBeef -#define CONFIG_NUM_DDR_CONTROLLERS 2 -/* #define CONFIG_DDR_INTERLEAVE 1 */ -#define CACHE_LINE_INTERLEAVING 0x20000000 -#define PAGE_INTERLEAVING 0x21000000 -#define BANK_INTERLEAVING 0x22000000 -#define SUPER_BANK_INTERLEAVING 0x23000000 - #define CONFIG_HIGH_BATS 1 /* High BATs supported and enabled */ #define CONFIG_ALTIVEC 1 @@ -104,53 +91,63 @@ extern unsigned long get_board_sys_clk(unsigned long dummy); /* * DDR Setup */ +#define CONFIG_FSL_DDR2 +#undef CONFIG_FSL_DDR_INTERACTIVE +#define CONFIG_SPD_EEPROM /* Use SPD EEPROM for DDR setup */ +#define CONFIG_DDR_SPD + +#define CONFIG_ECC_INIT_VIA_DDRCONTROLLER /* DDR controller or DMA? */ +#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 CONFIG_VERY_BIG_RAM #define MPC86xx_DDR_SDRAM_CLK_CNTL -#if defined(CONFIG_SPD_EEPROM) - /* - * Determine DDR configuration from I2C interface. - */ - #define SPD_EEPROM_ADDRESS1 0x51 /* DDR DIMM */ - #define SPD_EEPROM_ADDRESS2 0x52 /* DDR DIMM */ - #define SPD_EEPROM_ADDRESS3 0x53 /* DDR DIMM */ - #define SPD_EEPROM_ADDRESS4 0x54 /* DDR DIMM */ +#define CONFIG_NUM_DDR_CONTROLLERS 2 +#define CONFIG_DIMM_SLOTS_PER_CTLR 2 +#define CONFIG_CHIP_SELECTS_PER_CTRL (2 * CONFIG_DIMM_SLOTS_PER_CTLR) + +/* + * I2C addresses of SPD EEPROMs + */ +#define SPD_EEPROM_ADDRESS1 0x51 /* CTLR 0 DIMM 0 */ +#define SPD_EEPROM_ADDRESS2 0x52 /* CTLR 0 DIMM 1 */ +#define SPD_EEPROM_ADDRESS3 0x53 /* CTLR 1 DIMM 0 */ +#define SPD_EEPROM_ADDRESS4 0x54 /* CTLR 1 DIMM 1 */ + + +/* + * These are used when DDR doesn't use SPD. + */ +#define CFG_SDRAM_SIZE 256 /* DDR is 256MB */ +#define CFG_DDR_CS0_BNDS 0x0000000F +#define CFG_DDR_CS0_CONFIG 0x80010102 /* Enable, no interleaving */ +#define CFG_DDR_TIMING_3 0x00000000 +#define CFG_DDR_TIMING_0 0x00260802 +#define CFG_DDR_TIMING_1 0x39357322 +#define CFG_DDR_TIMING_2 0x14904cc8 +#define CFG_DDR_MODE_1 0x00480432 +#define CFG_DDR_MODE_2 0x00000000 +#define CFG_DDR_INTERVAL 0x06090100 +#define CFG_DDR_DATA_INIT 0xdeadbeef +#define CFG_DDR_CLK_CTRL 0x03800000 +#define CFG_DDR_OCD_CTRL 0x00000000 +#define CFG_DDR_OCD_STATUS 0x00000000 +#define CFG_DDR_CONTROL 0xe3008000 /* Type = DDR2 */ +#define CFG_DDR_CONTROL2 0x04400000 + +/* + * FIXME: Not used in fixed_sdram function + */ +#define CFG_DDR_MODE 0x00000022 +#define CFG_DDR_CS1_BNDS 0x00000000 +#define CFG_DDR_CS2_BNDS 0x00000FFF /* Not done */ +#define CFG_DDR_CS3_BNDS 0x00000FFF /* Not done */ +#define CFG_DDR_CS4_BNDS 0x00000FFF /* Not done */ +#define CFG_DDR_CS5_BNDS 0x00000FFF /* Not done */ -#else - /* - * Manually set up DDR1 parameters - */ - - #define CFG_SDRAM_SIZE 256 /* DDR is 256MB */ - - #define CFG_DDR_CS0_BNDS 0x0000000F - #define CFG_DDR_CS0_CONFIG 0x80010102 /* Enable, no interleaving */ - #define CFG_DDR_EXT_REFRESH 0x00000000 - #define CFG_DDR_TIMING_0 0x00260802 - #define CFG_DDR_TIMING_1 0x39357322 - #define CFG_DDR_TIMING_2 0x14904cc8 - #define CFG_DDR_MODE_1 0x00480432 - #define CFG_DDR_MODE_2 0x00000000 - #define CFG_DDR_INTERVAL 0x06090100 - #define CFG_DDR_DATA_INIT 0xdeadbeef - #define CFG_DDR_CLK_CTRL 0x03800000 - #define CFG_DDR_OCD_CTRL 0x00000000 - #define CFG_DDR_OCD_STATUS 0x00000000 - #define CFG_DDR_CONTROL 0xe3008000 /* Type = DDR2 */ - #define CFG_DDR_CONTROL2 0x04400000 - - /* Not used in fixed_sdram function */ - - #define CFG_DDR_MODE 0x00000022 - #define CFG_DDR_CS1_BNDS 0x00000000 - #define CFG_DDR_CS2_BNDS 0x00000FFF /* Not done */ - #define CFG_DDR_CS3_BNDS 0x00000FFF /* Not done */ - #define CFG_DDR_CS4_BNDS 0x00000FFF /* Not done */ - #define CFG_DDR_CS5_BNDS 0x00000FFF /* Not done */ -#endif #define CONFIG_ID_EEPROM #define CFG_I2C_EEPROM_NXID -- 2.7.4