diff options
Diffstat (limited to 'drivers/ddr/fsl/main.c')
| -rw-r--r-- | drivers/ddr/fsl/main.c | 244 |
1 files changed, 164 insertions, 80 deletions
diff --git a/drivers/ddr/fsl/main.c b/drivers/ddr/fsl/main.c index 5e001fcb99..b43b669e41 100644 --- a/drivers/ddr/fsl/main.c +++ b/drivers/ddr/fsl/main.c @@ -135,7 +135,7 @@ __attribute__((weak, alias("__get_spd"))) void get_spd(generic_spd_eeprom_t *spd, u8 i2c_address); void fsl_ddr_get_spd(generic_spd_eeprom_t *ctrl_dimms_spd, - unsigned int ctrl_num) + unsigned int ctrl_num, unsigned int dimm_slots_per_ctrl) { unsigned int i; unsigned int i2c_address = 0; @@ -145,14 +145,14 @@ void fsl_ddr_get_spd(generic_spd_eeprom_t *ctrl_dimms_spd, return; } - for (i = 0; i < CONFIG_DIMM_SLOTS_PER_CTLR; i++) { + for (i = 0; i < dimm_slots_per_ctrl; i++) { i2c_address = spd_i2c_addr[ctrl_num][i]; get_spd(&(ctrl_dimms_spd[i]), i2c_address); } } #else void fsl_ddr_get_spd(generic_spd_eeprom_t *ctrl_dimms_spd, - unsigned int ctrl_num) + unsigned int ctrl_num, unsigned int dimm_slots_per_ctrl) { } #endif /* SPD_EEPROM_ADDRESSx */ @@ -231,9 +231,11 @@ const char * step_to_string(unsigned int step) { static unsigned long long __step_assign_addresses(fsl_ddr_info_t *pinfo, unsigned int dbw_cap_adj[]) { - int i, j; + unsigned int i, j; unsigned long long total_mem, current_mem_base, total_ctlr_mem; unsigned long long rank_density, ctlr_density = 0; + unsigned int first_ctrl = pinfo->first_ctrl; + unsigned int last_ctrl = first_ctrl + pinfo->num_ctrls - 1; /* * If a reduced data width is requested, but the SPD @@ -241,7 +243,7 @@ static unsigned long long __step_assign_addresses(fsl_ddr_info_t *pinfo, * computed dimm capacities accordingly before * assigning addresses. */ - for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) { + for (i = first_ctrl; i <= last_ctrl; i++) { unsigned int found = 0; switch (pinfo->memctl_opts[i].data_bus_width) { @@ -295,12 +297,12 @@ static unsigned long long __step_assign_addresses(fsl_ddr_info_t *pinfo, debug("dbw_cap_adj[%d]=%d\n", i, dbw_cap_adj[i]); } - current_mem_base = CONFIG_SYS_FSL_DDR_SDRAM_BASE_PHY; + current_mem_base = pinfo->mem_base; total_mem = 0; - if (pinfo->memctl_opts[0].memctl_interleaving) { - rank_density = pinfo->dimm_params[0][0].rank_density >> - dbw_cap_adj[0]; - switch (pinfo->memctl_opts[0].ba_intlv_ctl & + if (pinfo->memctl_opts[first_ctrl].memctl_interleaving) { + rank_density = pinfo->dimm_params[first_ctrl][0].rank_density >> + dbw_cap_adj[first_ctrl]; + switch (pinfo->memctl_opts[first_ctrl].ba_intlv_ctl & FSL_DDR_CS0_CS1_CS2_CS3) { case FSL_DDR_CS0_CS1_CS2_CS3: ctlr_density = 4 * rank_density; @@ -316,7 +318,7 @@ static unsigned long long __step_assign_addresses(fsl_ddr_info_t *pinfo, } debug("rank density is 0x%llx, ctlr density is 0x%llx\n", rank_density, ctlr_density); - for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) { + for (i = first_ctrl; i <= last_ctrl; i++) { if (pinfo->memctl_opts[i].memctl_interleaving) { switch (pinfo->memctl_opts[i].memctl_interleaving_mode) { case FSL_DDR_256B_INTERLEAVING: @@ -372,7 +374,7 @@ static unsigned long long __step_assign_addresses(fsl_ddr_info_t *pinfo, * Simple linear assignment if memory * controllers are not interleaved. */ - for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) { + for (i = first_ctrl; i <= last_ctrl; i++) { total_ctlr_mem = 0; pinfo->common_timing_params[i].base_address = current_mem_base; @@ -408,18 +410,23 @@ fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step, { unsigned int i, j; unsigned long long total_mem = 0; - int assert_reset; + int assert_reset = 0; + unsigned int first_ctrl = pinfo->first_ctrl; + unsigned int last_ctrl = first_ctrl + pinfo->num_ctrls - 1; + __maybe_unused int retval; + __maybe_unused bool goodspd = false; + __maybe_unused int dimm_slots_per_ctrl = pinfo->dimm_slots_per_ctrl; fsl_ddr_cfg_regs_t *ddr_reg = pinfo->fsl_ddr_config_reg; common_timing_params_t *timing_params = pinfo->common_timing_params; - assert_reset = board_need_mem_reset(); + if (pinfo->board_need_mem_reset) + assert_reset = pinfo->board_need_mem_reset(); /* data bus width capacity adjust shift amount */ unsigned int dbw_capacity_adjust[CONFIG_NUM_DDR_CONTROLLERS]; - for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) { + for (i = first_ctrl; i <= last_ctrl; i++) dbw_capacity_adjust[i] = 0; - } debug("starting at step %u (%s)\n", start_step, step_to_string(start_step)); @@ -428,28 +435,28 @@ fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step, case STEP_GET_SPD: #if defined(CONFIG_DDR_SPD) || defined(CONFIG_SPD_EEPROM) /* STEP 1: Gather all DIMM SPD data */ - for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) { - fsl_ddr_get_spd(pinfo->spd_installed_dimms[i], i); + for (i = first_ctrl; i <= last_ctrl; i++) { + fsl_ddr_get_spd(pinfo->spd_installed_dimms[i], i, + dimm_slots_per_ctrl); } case STEP_COMPUTE_DIMM_PARMS: /* STEP 2: Compute DIMM parameters from SPD data */ - for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) { + for (i = first_ctrl; i <= last_ctrl; i++) { for (j = 0; j < CONFIG_DIMM_SLOTS_PER_CTLR; j++) { - unsigned int retval; generic_spd_eeprom_t *spd = &(pinfo->spd_installed_dimms[i][j]); dimm_params_t *pdimm = &(pinfo->dimm_params[i][j]); - retval = compute_dimm_parameters(spd, pdimm, i); #ifdef CONFIG_SYS_DDR_RAW_TIMING if (!i && !j && retval) { printf("SPD error on controller %d! " "Trying fallback to raw timing " "calculation\n", i); - fsl_ddr_get_dimm_params(pdimm, i, j); + retval = fsl_ddr_get_dimm_params(pdimm, + i, j); } #else if (retval == 2) { @@ -463,13 +470,26 @@ fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step, debug("Warning: compute_dimm_parameters" " non-zero return value for memctl=%u " "dimm=%u\n", i, j); + } else { + goodspd = true; } } } + if (!goodspd) { + /* + * No valid SPD found + * Throw an error if this is for main memory, i.e. + * first_ctrl == 0. Otherwise, siliently return 0 + * as the memory size. + */ + if (first_ctrl == 0) + printf("Error: No valid SPD detected.\n"); + return 0; + } #elif defined(CONFIG_SYS_DDR_RAW_TIMING) case STEP_COMPUTE_DIMM_PARMS: - for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) { + for (i = first_ctrl; i <= last_ctrl; i++) { for (j = 0; j < CONFIG_DIMM_SLOTS_PER_CTLR; j++) { dimm_params_t *pdimm = &(pinfo->dimm_params[i][j]); @@ -483,7 +503,7 @@ fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step, * STEP 3: Compute a common set of timing parameters * suitable for all of the DIMMs on each memory controller */ - for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) { + for (i = first_ctrl; i <= last_ctrl; i++) { debug("Computing lowest common DIMM" " parameters for memctl=%u\n", i); compute_lowest_common_dimm_parameters( @@ -494,7 +514,7 @@ fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step, case STEP_GATHER_OPTS: /* STEP 4: Gather configuration requirements from user */ - for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) { + for (i = first_ctrl; i <= last_ctrl; i++) { debug("Reloading memory controller " "configuration options for memctl=%u\n", i); /* @@ -516,9 +536,13 @@ fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step, if (timing_params[i].all_dimms_registered) assert_reset = 1; } - if (assert_reset) { - debug("Asserting mem reset\n"); - board_assert_mem_reset(); + if (assert_reset && !size_only) { + if (pinfo->board_mem_reset) { + debug("Asserting mem reset\n"); + pinfo->board_mem_reset(); + } else { + debug("Asserting mem reset missing\n"); + } } case STEP_ASSIGN_ADDRESSES: @@ -530,7 +554,7 @@ fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step, case STEP_COMPUTE_REGS: /* STEP 6: compute controller register values */ debug("FSL Memory ctrl register computation\n"); - for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) { + for (i = first_ctrl; i <= last_ctrl; i++) { if (timing_params[i].ndimms_present == 0) { memset(&ddr_reg[i], 0, sizeof(fsl_ddr_cfg_regs_t)); @@ -558,7 +582,7 @@ fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step, */ unsigned int max_end = 0; - for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) { + for (i = first_ctrl; i <= last_ctrl; i++) { for (j = 0; j < CONFIG_CHIP_SELECTS_PER_CTRL; j++) { fsl_ddr_cfg_regs_t *reg = &ddr_reg[i]; if (reg->cs[j].config & 0x80000000) { @@ -578,53 +602,45 @@ fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step, } total_mem = 1 + (((unsigned long long)max_end << 24ULL) | - 0xFFFFFFULL) - CONFIG_SYS_FSL_DDR_SDRAM_BASE_PHY; + 0xFFFFFFULL) - pinfo->mem_base; } return total_mem; } -/* - * fsl_ddr_sdram() -- this is the main function to be called by - * initdram() in the board file. - * - * It returns amount of memory configured in bytes. - */ -phys_size_t fsl_ddr_sdram(void) +phys_size_t __fsl_ddr_sdram(fsl_ddr_info_t *pinfo) { - unsigned int i; + unsigned int i, first_ctrl, last_ctrl; #ifdef CONFIG_PPC unsigned int law_memctl = LAW_TRGT_IF_DDR_1; #endif unsigned long long total_memory; - fsl_ddr_info_t info; - int deassert_reset; + int deassert_reset = 0; - /* Reset info structure. */ - memset(&info, 0, sizeof(fsl_ddr_info_t)); + first_ctrl = pinfo->first_ctrl; + last_ctrl = first_ctrl + pinfo->num_ctrls - 1; /* Compute it once normally. */ #ifdef CONFIG_FSL_DDR_INTERACTIVE if (tstc() && (getc() == 'd')) { /* we got a key press of 'd' */ - total_memory = fsl_ddr_interactive(&info, 0); + total_memory = fsl_ddr_interactive(pinfo, 0); } else if (fsl_ddr_interactive_env_var_exists()) { - total_memory = fsl_ddr_interactive(&info, 1); + total_memory = fsl_ddr_interactive(pinfo, 1); } else #endif - total_memory = fsl_ddr_compute(&info, STEP_GET_SPD, 0); + total_memory = fsl_ddr_compute(pinfo, STEP_GET_SPD, 0); /* setup 3-way interleaving before enabling DDRC */ - if (info.memctl_opts[0].memctl_interleaving) { - switch (info.memctl_opts[0].memctl_interleaving_mode) { - case FSL_DDR_3WAY_1KB_INTERLEAVING: - case FSL_DDR_3WAY_4KB_INTERLEAVING: - case FSL_DDR_3WAY_8KB_INTERLEAVING: - fsl_ddr_set_intl3r( - info.memctl_opts[0].memctl_interleaving_mode); - break; - default: - break; - } + switch (pinfo->memctl_opts[first_ctrl].memctl_interleaving_mode) { + case FSL_DDR_3WAY_1KB_INTERLEAVING: + case FSL_DDR_3WAY_4KB_INTERLEAVING: + case FSL_DDR_3WAY_8KB_INTERLEAVING: + fsl_ddr_set_intl3r( + pinfo->memctl_opts[first_ctrl]. + memctl_interleaving_mode); + break; + default: + break; } /* @@ -637,14 +653,15 @@ phys_size_t fsl_ddr_sdram(void) * For non-registered DIMMs, initialization can go through but it is * also OK to follow the same flow. */ - deassert_reset = board_need_mem_reset(); - for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) { - if (info.common_timing_params[i].all_dimms_registered) + if (pinfo->board_need_mem_reset) + deassert_reset = pinfo->board_need_mem_reset(); + for (i = first_ctrl; i <= last_ctrl; i++) { + if (pinfo->common_timing_params[i].all_dimms_registered) deassert_reset = 1; } - for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) { + for (i = first_ctrl; i <= last_ctrl; i++) { debug("Programming controller %u\n", i); - if (info.common_timing_params[i].ndimms_present == 0) { + if (pinfo->common_timing_params[i].ndimms_present == 0) { debug("No dimms present on controller %u; " "skipping programming\n", i); continue; @@ -653,45 +670,58 @@ phys_size_t fsl_ddr_sdram(void) * The following call with step = 1 returns before enabling * the controller. It has to finish with step = 2 later. */ - fsl_ddr_set_memctl_regs(&(info.fsl_ddr_config_reg[i]), i, + fsl_ddr_set_memctl_regs(&(pinfo->fsl_ddr_config_reg[i]), i, deassert_reset ? 1 : 0); } if (deassert_reset) { /* Use board FPGA or GPIO to deassert reset signal */ - debug("Deasserting mem reset\n"); - board_deassert_mem_reset(); - for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) { + if (pinfo->board_mem_de_reset) { + debug("Deasserting mem reset\n"); + pinfo->board_mem_de_reset(); + } else { + debug("Deasserting mem reset missing\n"); + } + for (i = first_ctrl; i <= last_ctrl; i++) { /* Call with step = 2 to continue initialization */ - fsl_ddr_set_memctl_regs(&(info.fsl_ddr_config_reg[i]), + fsl_ddr_set_memctl_regs(&(pinfo->fsl_ddr_config_reg[i]), i, 2); } } #ifdef CONFIG_PPC /* program LAWs */ - for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) { - if (info.memctl_opts[i].memctl_interleaving) { - switch (info.memctl_opts[i].memctl_interleaving_mode) { + for (i = first_ctrl; i <= last_ctrl; i++) { + if (pinfo->memctl_opts[i].memctl_interleaving) { + switch (pinfo->memctl_opts[i]. + memctl_interleaving_mode) { case FSL_DDR_CACHE_LINE_INTERLEAVING: case FSL_DDR_PAGE_INTERLEAVING: case FSL_DDR_BANK_INTERLEAVING: case FSL_DDR_SUPERBANK_INTERLEAVING: + if (i % 2) + break; if (i == 0) { law_memctl = LAW_TRGT_IF_DDR_INTRLV; - fsl_ddr_set_lawbar(&info.common_timing_params[i], + fsl_ddr_set_lawbar( + &pinfo->common_timing_params[i], law_memctl, i); - } else if (i == 2) { + } +#if CONFIG_NUM_DDR_CONTROLLERS > 3 + else if (i == 2) { law_memctl = LAW_TRGT_IF_DDR_INTLV_34; - fsl_ddr_set_lawbar(&info.common_timing_params[i], + fsl_ddr_set_lawbar( + &pinfo->common_timing_params[i], law_memctl, i); } +#endif break; case FSL_DDR_3WAY_1KB_INTERLEAVING: case FSL_DDR_3WAY_4KB_INTERLEAVING: case FSL_DDR_3WAY_8KB_INTERLEAVING: law_memctl = LAW_TRGT_IF_DDR_INTLV_123; if (i == 0) { - fsl_ddr_set_lawbar(&info.common_timing_params[i], + fsl_ddr_set_lawbar( + &pinfo->common_timing_params[i], law_memctl, i); } break; @@ -700,7 +730,8 @@ phys_size_t fsl_ddr_sdram(void) case FSL_DDR_4WAY_8KB_INTERLEAVING: law_memctl = LAW_TRGT_IF_DDR_INTLV_1234; if (i == 0) - fsl_ddr_set_lawbar(&info.common_timing_params[i], + fsl_ddr_set_lawbar( + &pinfo->common_timing_params[i], law_memctl, i); /* place holder for future 4-way interleaving */ break; @@ -724,8 +755,8 @@ phys_size_t fsl_ddr_sdram(void) default: break; } - fsl_ddr_set_lawbar(&info.common_timing_params[i], - law_memctl, i); + fsl_ddr_set_lawbar(&pinfo->common_timing_params[i], + law_memctl, i); } } #endif @@ -734,7 +765,7 @@ phys_size_t fsl_ddr_sdram(void) #if !defined(CONFIG_PHYS_64BIT) /* Check for 4G or more. Bad. */ - if (total_memory >= (1ull << 32)) { + if ((first_ctrl == 0) && (total_memory >= (1ull << 32))) { puts("Detected "); print_size(total_memory, " of memory\n"); printf(" This U-Boot only supports < 4G of DDR\n"); @@ -748,8 +779,56 @@ phys_size_t fsl_ddr_sdram(void) } /* - * fsl_ddr_sdram_size() - This function only returns the size of the total - * memory without setting ddr control registers. + * fsl_ddr_sdram(void) -- this is the main function to be + * called by initdram() in the board file. + * + * It returns amount of memory configured in bytes. + */ +phys_size_t fsl_ddr_sdram(void) +{ + fsl_ddr_info_t info; + + /* Reset info structure. */ + memset(&info, 0, sizeof(fsl_ddr_info_t)); + info.mem_base = CONFIG_SYS_FSL_DDR_SDRAM_BASE_PHY; + info.first_ctrl = 0; + info.num_ctrls = CONFIG_SYS_FSL_DDR_MAIN_NUM_CTRLS; + info.dimm_slots_per_ctrl = CONFIG_DIMM_SLOTS_PER_CTLR; + info.board_need_mem_reset = board_need_mem_reset; + info.board_mem_reset = board_assert_mem_reset; + info.board_mem_de_reset = board_deassert_mem_reset; + + return __fsl_ddr_sdram(&info); +} + +#ifdef CONFIG_SYS_FSL_OTHER_DDR_NUM_CTRLS +phys_size_t fsl_other_ddr_sdram(unsigned long long base, + unsigned int first_ctrl, + unsigned int num_ctrls, + unsigned int dimm_slots_per_ctrl, + int (*board_need_reset)(void), + void (*board_reset)(void), + void (*board_de_reset)(void)) +{ + fsl_ddr_info_t info; + + /* Reset info structure. */ + memset(&info, 0, sizeof(fsl_ddr_info_t)); + info.mem_base = base; + info.first_ctrl = first_ctrl; + info.num_ctrls = num_ctrls; + info.dimm_slots_per_ctrl = dimm_slots_per_ctrl; + info.board_need_mem_reset = board_need_reset; + info.board_mem_reset = board_reset; + info.board_mem_de_reset = board_de_reset; + + return __fsl_ddr_sdram(&info); +} +#endif + +/* + * fsl_ddr_sdram_size(first_ctrl, last_intlv) - This function only returns the + * size of the total memory without setting ddr control registers. */ phys_size_t fsl_ddr_sdram_size(void) @@ -758,6 +837,11 @@ fsl_ddr_sdram_size(void) unsigned long long total_memory = 0; memset(&info, 0 , sizeof(fsl_ddr_info_t)); + info.mem_base = CONFIG_SYS_FSL_DDR_SDRAM_BASE_PHY; + info.first_ctrl = 0; + info.num_ctrls = CONFIG_SYS_FSL_DDR_MAIN_NUM_CTRLS; + info.dimm_slots_per_ctrl = CONFIG_DIMM_SLOTS_PER_CTLR; + info.board_need_mem_reset = NULL; /* Compute it once normally. */ total_memory = fsl_ddr_compute(&info, STEP_GET_SPD, 1); |