From: Jon Loeliger jdl@freescale.com
Signed-off-by: Jon Loeliger jdl@freescale.com Signed-off-by: Kumar Gala galak@kernel.crashing.org --- Makefile | 3 + board/freescale/mpc8641hpcn/Makefile | 8 +- board/freescale/mpc8641hpcn/ddr.c | 262 +++++++++++++++++++++++++++++ board/freescale/mpc8641hpcn/mpc8641hpcn.c | 5 +- cpu/mpc86xx/Makefile | 1 - include/configs/MPC8641HPCN.h | 117 +++++++------ 6 files changed, 335 insertions(+), 61 deletions(-) create mode 100644 board/freescale/mpc8641hpcn/ddr.c
diff --git a/Makefile b/Makefile index 082b08e..c0c359f 100644 --- a/Makefile +++ b/Makefile @@ -237,6 +237,9 @@ endif ifeq ($(CPU),mpc85xx) LIBS += drivers/qe/qe.a endif +ifeq ($(CPU),mpc86xx) +LIBS += cpu/mpc8xxx/libmpc8xxx.a +endif LIBS += drivers/rtc/librtc.a LIBS += drivers/serial/libserial.a LIBS += drivers/usb/libusb.a diff --git a/board/freescale/mpc8641hpcn/Makefile b/board/freescale/mpc8641hpcn/Makefile index c096e15..27d20a0 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-y += 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..0116481 --- /dev/null +++ b/board/freescale/mpc8641hpcn/ddr.c @@ -0,0 +1,262 @@ +/* + * 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 <../cpu/mpc8xxx/fsl_ddr_sdram.h> + +#define SDRAM_TYPE_DDR1 2 +#define SDRAM_TYPE_DDR2 3 +#define SDRAM_TYPE_LPDDR1 6 +#define SDRAM_TYPE_DDR3 7 + + +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_sdram_get_mem_data_rate(void) +{ + return get_bus_freq(0); +} + + +void +fsl_ddr_sdram_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_sdram_dump_memctl_regs(unsigned int ctrl_num) +{ + unsigned int i; + volatile ccsr_ddr_t *ddr; + + if (ctrl_num == 0) + ddr = (void *)CFG_MPC86xx_DDR_ADDR; + else + ddr = (void *)CFG_MPC86xx_DDR2_ADDR; + + for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { + unsigned int bnds = 0; + unsigned int config = 0; + + if (i == 0) { + bnds = ddr->cs0_bnds; + config = ddr->cs0_config; + + } else if (i == 1) { + bnds = ddr->cs1_bnds; + config = ddr->cs1_config; + + } else if (i == 2) { + bnds = ddr->cs2_bnds; + config = ddr->cs2_config; + + } else if (i == 3) { + bnds = ddr->cs3_bnds; + config = ddr->cs3_config; + + } else { + /* + * FIXME what happens when CONFIG_CHIP_SELECTS_PER_CTRL > 4 + */ + } + + printf("cs%u_bnds = %08X\n", i, bnds); + printf("cs%u_config = %08X\n", i, config); + } + + printf("timing_cfg_3 = %08X\n", ddr->timing_cfg_3); + printf("timing_cfg_0 = %08X\n", ddr->timing_cfg_0); + printf("timing_cfg_1 = %08X\n", ddr->timing_cfg_1); + printf("timing_cfg_2 = %08X\n", ddr->timing_cfg_2); + printf("ddr_sdram_cfg = %08X\n", ddr->sdram_cfg_1); + printf("ddr_sdram_cfg_2 = %08X\n", ddr->sdram_cfg_2); + printf("ddr_sdram_mode = %08X\n", ddr->sdram_mode_1); + printf("ddr_sdram_mode_2 = %08X\n", ddr->sdram_mode_2); + printf("ddr_sdram_interval = %08X\n", ddr->sdram_interval); + printf("ddr_data_init = %08X\n", ddr->sdram_data_init); + printf("ddr_sdram_clk_cntl = %08X\n", ddr->sdram_clk_cntl); + printf("ddr_init_addr = %08X\n", ddr->init_addr); +} + + +void +fsl_ddr_sdram_set_memctl_regs(const fsl_memctl_config_regs_t *regs, + unsigned int ctrl_num) +{ + unsigned int i; + volatile ccsr_ddr_t *ddr; + + switch (ctrl_num) { + case 0: + ddr = (void *)CFG_MPC86xx_DDR_ADDR; + break; + case 1: + ddr = (void *)CFG_MPC86xx_DDR2_ADDR; + break; + default: + printf("fsl_ddr_sdram_set_memctl_regs() unexpected ctrl_num = %u\n", ctrl_num); + return; + } + + for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { + if (i == 0) { + ddr->cs0_bnds = regs->cs[i].bnds; + ddr->cs0_config = regs->cs[i].config; + + } else if (i == 1) { + ddr->cs1_bnds = regs->cs[i].bnds; + ddr->cs1_config = regs->cs[i].config; + + } else if (i == 2) { + ddr->cs2_bnds = regs->cs[i].bnds; + ddr->cs2_config = regs->cs[i].config; + + } else if (i == 3) { + ddr->cs3_bnds = regs->cs[i].bnds; + ddr->cs3_config = regs->cs[i].config; + } + } + + /* + * Someone decided to use different names from the documentation... + */ + ddr->timing_cfg_3 = regs->timing_cfg_3; + ddr->timing_cfg_0 = regs->timing_cfg_0; + ddr->timing_cfg_1 = regs->timing_cfg_1; + ddr->timing_cfg_2 = regs->timing_cfg_2; + ddr->sdram_cfg_2 = regs->ddr_sdram_cfg_2; + ddr->sdram_mode_1 = regs->ddr_sdram_mode; + ddr->sdram_mode_2 = regs->ddr_sdram_mode_2; + ddr->sdram_interval = regs->ddr_sdram_interval; + ddr->sdram_data_init = regs->ddr_data_init; + ddr->sdram_clk_cntl = regs->ddr_sdram_clk_cntl; + ddr->init_addr = regs->ddr_init_addr; + ddr->init_ext_addr = regs->ddr_init_ext_addr; + + /* + * FIXME: ECC? Need to program err_disable, err_sbe, and err_int_en + */ + + debug("before go\n"); + + /* + * 200 painful micro-seconds must elapse between + * the DDR clock setup and the DDR config enable. + */ + udelay(200); + asm volatile("sync;isync"); + + ddr->sdram_cfg_1 = regs->ddr_sdram_cfg; + + + /* + * Poll DDR_SDRAM_CFG_2[D_INIT] bit until auto-data init is done + */ + while (ddr->sdram_cfg_2 & 0x10) { + udelay(10000); /* throttle polling rate */ + } +} + + +unsigned int +fsl_ddr_sdram_type_function(void) +{ + return SDRAM_TYPE_DDR2; +} + + +/* + * factors to consider for clock adjust: + * - number of chips on bus + * - position of slot + * - DDR1 vs. DDR2? + * - ??? + * + * FIXME: need to figure out the function parameters necessary to compute + * FIXME: a clock adjust value + */ + +unsigned int +fsl_ddr_sdram_clk_adjust_function(void) +{ + return 7; +} + + +/* + * factors to consider for CPO: + * - frequency + * - ddr1 vs. ddr2 + * + * FIXME: figure out how to compute or tabulate good values for this + */ + +unsigned int +fsl_ddr_sdram_cpo_override_function(void) +{ + return 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 + */ + +unsigned int +fsl_ddr_sdram_write_data_delay_function(void) +{ + return 3; +} + + +/* + * factors to consider for half-strength driver enable: + * - number of DIMMs installed + */ + +unsigned int +fsl_ddr_sdram_half_strength_driver_enable_function(void) +{ + return 0; +} diff --git a/board/freescale/mpc8641hpcn/mpc8641hpcn.c b/board/freescale/mpc8641hpcn/mpc8641hpcn.c index db46953..96bb908 100644 --- a/board/freescale/mpc8641hpcn/mpc8641hpcn.c +++ b/board/freescale/mpc8641hpcn/mpc8641hpcn.c @@ -25,18 +25,17 @@ #include <asm/processor.h> #include <asm/immap_86xx.h> #include <asm/immap_fsl_pci.h> -#include <spd_sdram.h> #include <asm/io.h> #include <libfdt.h> #include <fdt_support.h>
#include "../common/pixis.h" +#include "../cpu/mpc8xxx/fsl_ddr_sdram.h"
#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER) extern void ddr_enable_ecc(unsigned int dram_size); #endif
-void sdram_init(void); long int fixed_sdram(void);
@@ -61,7 +60,7 @@ 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/cpu/mpc86xx/Makefile b/cpu/mpc86xx/Makefile index 4227053..454c728 100644 --- a/cpu/mpc86xx/Makefile +++ b/cpu/mpc86xx/Makefile @@ -36,7 +36,6 @@ COBJS-y += cpu.o COBJS-y += cpu_init.o COBJS-y += speed.o COBJS-y += interrupts.o -COBJS-y += spd_sdram.o
COBJS-$(CONFIG_OF_LIBFDT) += fdt.o
diff --git a/include/configs/MPC8641HPCN.h b/include/configs/MPC8641HPCN.h index cd35494..ccba409 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 +91,75 @@ 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 */
-#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 +/* + * Number of memory controllers on device + */ +#define CONFIG_NUM_DDR_CONTROLLERS 2 + +/* + * Number of DIMM slots per memory controller + */ +#define CONFIG_DIMM_SLOTS_PER_CTLR 2 + +/* + * Number of chip selects per memory controller + */ +#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 */ +
#define CONFIG_ID_EEPROM #define CFG_I2C_EEPROM_NXID