Signed-off-by: Kumar Gala galak@kernel.crashing.org --- board/freescale/mpc8540ads/Makefile | 13 +- board/freescale/mpc8540ads/ddr.c | 296 +++++++++++++++++++++++++++++++ board/freescale/mpc8540ads/mpc8540ads.c | 16 ++- include/configs/MPC8540ADS.h | 70 +++++--- 4 files changed, 360 insertions(+), 35 deletions(-) create mode 100644 board/freescale/mpc8540ads/ddr.c
diff --git a/board/freescale/mpc8540ads/Makefile b/board/freescale/mpc8540ads/Makefile index 2d71cbc..4c6da4d 100644 --- a/board/freescale/mpc8540ads/Makefile +++ b/board/freescale/mpc8540ads/Makefile @@ -25,11 +25,14 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).a
-COBJS := $(BOARD).o law.o tlb.o - -SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) -OBJS := $(addprefix $(obj),$(COBJS)) -SOBJS := $(addprefix $(obj),$(SOBJS)) +COBJS-y += $(BOARD).o +COBJS-y += ddr.o +COBJS-y += law.o +COBJS-y += tlb.o + +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) diff --git a/board/freescale/mpc8540ads/ddr.c b/board/freescale/mpc8540ads/ddr.c new file mode 100644 index 0000000..1414da9 --- /dev/null +++ b/board/freescale/mpc8540ads/ddr.c @@ -0,0 +1,296 @@ +/* + * 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(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_sdram_get_mem_data_rate(void) +{ + return get_ddr_freq(0); +} + + +void +fsl_ddr_sdram_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_ADDRESS1; + } + 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_MPC85xx_DDR_ADDR; + else + ddr = (void *)CFG_MPC85xx_DDR2_ADDR; + + for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { + unsigned int bnds = 0; + unsigned int config = 0; + unsigned int config_2 = 0; + unsigned int *pbnds = NULL; + unsigned int *pconfig = NULL; + unsigned int *pconfig_2 = NULL; + + if (i == 0) { + bnds = ddr->cs0_bnds; + config = ddr->cs0_config; + config_2 = ddr->cs0_config_2; + pbnds = (unsigned int *)&ddr->cs0_bnds; + pconfig = (unsigned int *)&ddr->cs0_config; + pconfig_2= (unsigned int *)&ddr->cs0_config_2; + + } else if (i == 1) { + bnds = ddr->cs1_bnds; + config = ddr->cs1_config; + config_2 = ddr->cs1_config_2; + pbnds = (unsigned int *)&ddr->cs1_bnds; + pconfig = (unsigned int *)&ddr->cs1_config; + pconfig_2= (unsigned int *)&ddr->cs1_config_2; + + } else if (i == 2) { + bnds = ddr->cs2_bnds; + config = ddr->cs2_config; + config_2 = ddr->cs2_config_2; + pbnds = (unsigned int *)&ddr->cs2_bnds; + pconfig = (unsigned int *)&ddr->cs2_config; + pconfig_2= (unsigned int *)&ddr->cs2_config_2; + + } else if (i == 3) { + bnds = ddr->cs3_bnds; + config = ddr->cs3_config; + config_2 = ddr->cs3_config_2; + pbnds = (unsigned int *) &ddr->cs3_bnds; + pconfig = (unsigned int *) &ddr->cs3_config; + pconfig_2= (unsigned int *) &ddr->cs3_config_2; + + } else { + /* + * FIXME what happens if CONFIG_CHIP_SELECTS_PER_CTRL > 4 + */ + } + + printf("cs%u_bnds = %08X\t%p\n", i, bnds, pbnds); + printf("cs%u_config = %08X\t%p\n", i, config, pconfig); + printf("cs%u_config_2 = %08X\t%p\n", + i, config_2, pconfig_2); + } + + /* + * Due to inconsistencies between immap_85xx.h and immap_86xx.h, + * you will have to modify the structure member names by hand + * between architectures. + */ + printf("timing_cfg_3 = %08X\t%p\n", + ddr->timing_cfg_3, &ddr->timing_cfg_3); + printf("timing_cfg_0 = %08X\t%p\n", + ddr->timing_cfg_0, &ddr->timing_cfg_0); + printf("timing_cfg_1 = %08X\t%p\n", + ddr->timing_cfg_1, &ddr->timing_cfg_1); + printf("timing_cfg_2 = %08X\t%p\n", + ddr->timing_cfg_2, &ddr->timing_cfg_2); + printf("ddr_sdram_cfg = %08X\t%p\n", + ddr->sdram_cfg, &ddr->sdram_cfg); + printf("ddr_sdram_cfg_2 = %08X\t%p\n", + ddr->sdram_cfg_2, &ddr->sdram_cfg_2); + printf("ddr_sdram_mode = %08X\t%p\n", + ddr->sdram_mode, &ddr->sdram_mode); + printf("ddr_sdram_mode_2 = %08X\t%p\n", + ddr->sdram_mode_2, &ddr->sdram_mode_2); + printf("ddr_sdram_interval = %08X\t%p\n", + ddr->sdram_interval, &ddr->sdram_interval); + printf("ddr_data_init = %08X\t%p\n", + ddr->sdram_data_init, &ddr->sdram_data_init); + printf("ddr_sdram_clk_cntl = %08X\t%p\n", + ddr->sdram_clk_cntl, &ddr->sdram_clk_cntl); + printf("ddr_init_addr = %08X\t%p\n", + ddr->init_addr, &ddr->init_addr); + printf("ddr_init_ext_addr = %08X\t%p\n", + ddr->init_ext_addr, &ddr->init_ext_addr); + + printf("timing_cfg_4 = %08X\t%p\n", + ddr->timing_cfg_4, &ddr->timing_cfg_4); + printf("timing_cfg_5 = %08X\t%p\n", + ddr->timing_cfg_5, &ddr->timing_cfg_5); + printf("ddr_zq_cntl = %08X\t%p\n", + ddr->ddr_zq_cntl, &ddr->ddr_zq_cntl); + printf("ddr_wrlvl_cntl = %08X\t%p\n", + ddr->ddr_wrlvl_cntl, &ddr->ddr_wrlvl_cntl); + printf("ddr_pd_cntl = %08X\t%p\n", + ddr->ddr_pd_cntl, &ddr->ddr_pd_cntl); + printf("ddr_sr_cntr = %08X\t%p\n", + ddr->ddr_sr_cntr, &ddr->ddr_sr_cntr); + printf("ddr_sdram_rcw_1 = %08X\t%p\n", + ddr->ddr_sdram_rcw_1, &ddr->ddr_sdram_rcw_1); + printf("ddr_sdram_rcw_2 = %08X\t%p\n", + ddr->ddr_sdram_rcw_2, &ddr->ddr_sdram_rcw_2); + + printf("debug_1 = %08X\t%p\n", + ddr->debug_1, &ddr->debug_1); +} + + +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_MPC85xx_DDR_ADDR; + break; + case 1: + ddr = (void *)CFG_MPC85xx_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; + ddr->cs0_config_2 = regs->cs[i].config_2; + + } else if (i == 1) { + ddr->cs1_bnds = regs->cs[i].bnds; + ddr->cs1_config = regs->cs[i].config; + ddr->cs1_config_2 = regs->cs[i].config_2; + + } else if (i == 2) { + ddr->cs2_bnds = regs->cs[i].bnds; + ddr->cs2_config = regs->cs[i].config; + ddr->cs2_config_2 = regs->cs[i].config_2; + + } else if (i == 3) { + ddr->cs3_bnds = regs->cs[i].bnds; + ddr->cs3_config = regs->cs[i].config; + ddr->cs3_config_2 = regs->cs[i].config_2; + } + } + + /* + * Someone decided to use different names from the documentation... + */ + ddr->timing_cfg_3 = regs->timing_cfg_3; + 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 = 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 + */ + + /* + * 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 = regs->ddr_sdram_cfg; + + asm("sync;isync;msync"); + udelay(500); +} + + +unsigned int +fsl_ddr_sdram_type_function(void) +{ + return SDRAM_TYPE_DDR1; +} + + +/* + * Technically, the memory controller on this part doesn't even + * have the clk_adjust field for lack of the SDRAM_CLK_CNTL register. + */ + +unsigned int +fsl_ddr_sdram_clk_adjust_function(void) +{ + return 0; +} + + +unsigned int +fsl_ddr_sdram_cpo_override_function(void) +{ + return 0; /* Should be 0 for DDR1 */ +} + + +/* + * 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/mpc8540ads/mpc8540ads.c b/board/freescale/mpc8540ads/mpc8540ads.c index 4f068cc..926d9a6 100644 --- a/board/freescale/mpc8540ads/mpc8540ads.c +++ b/board/freescale/mpc8540ads/mpc8540ads.c @@ -28,11 +28,13 @@ #include <common.h> #include <pci.h> #include <asm/processor.h> +#include <asm/mmu.h> #include <asm/immap_85xx.h> -#include <spd_sdram.h> #include <libfdt.h> #include <fdt_support.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 @@ -82,10 +84,16 @@ initdram(int board_type) } #endif
-#if defined(CONFIG_SPD_EEPROM) - dram_size = spd_sdram (); +#ifdef CONFIG_SPD_EEPROM + dram_size = fsl_ddr_sdram(); + printf("dram_size = %u\n", dram_size); + + dram_size = setup_ddr_tlbs(dram_size / 0x100000); + printf("dram_size = %u after setup_ddr_tlbs\n", dram_size); + + dram_size *= 0x100000; #else - dram_size = fixed_sdram (); + dram_size = fixed_sdram(); #endif
#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER) diff --git a/include/configs/MPC8540ADS.h b/include/configs/MPC8540ADS.h index d1d3cc3..cc69c19 100644 --- a/include/configs/MPC8540ADS.h +++ b/include/configs/MPC8540ADS.h @@ -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 */
/* @@ -104,28 +97,53 @@ /* * 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
-#if defined(CONFIG_SPD_EEPROM) - /* - * Determine DDR configuration from I2C interface. - */ - #define SPD_EEPROM_ADDRESS 0x51 /* DDR DIMM */ +/* + * Number of memory controllers on device + */ +#define CONFIG_NUM_DDR_CONTROLLERS 1
-#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 +/* + * Number of DIMM slots per memory controller + */ +#define CONFIG_DIMM_SLOTS_PER_CTLR 1 + +/* + * Number of chip selects per memory controller + * + * The MPC8540 (the chip) has 4 chip selects per memory controller. + * However, the MPC8540ADS (the board) has only 1 DIMM slot per memory + * controller, so therefore it only has 2 chip selects per memory + * controller that are actually connected. + */ +#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 */ + + +/* + * 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 */
/*