/* * Copyright 2014-2015 Freescale Semiconductor, Inc. * * SPDX-License-Identifier: GPL-2.0+ */ #include <common.h> #include <asm/io.h> #include <fsl_ddr_sdram.h> #include <asm/processor.h> #include <fsl_immap.h> #include <fsl_ddr.h> #ifdef CONFIG_SYS_FSL_ERRATUM_A008511 static void set_wait_for_bits_clear(void *ptr, u32 value, u32 bits) { int timeout = 1000; ddr_out32(ptr, value); while (ddr_in32(ptr) & bits) { udelay(100); timeout--; } if (timeout <= 0) puts("Error: A007865 wait for clear timeout.\n"); } #endif /* CONFIG_SYS_FSL_ERRATUM_A008511 */ #if (CONFIG_CHIP_SELECTS_PER_CTRL > 4) #error Invalid setting for CONFIG_CHIP_SELECTS_PER_CTRL #endif /* * regs has the to-be-set values for DDR controller registers * ctrl_num is the DDR controller number * step: 0 goes through the initialization in one pass * 1 sets registers and returns before enabling controller * 2 resumes from step 1 and continues to initialize * Dividing the initialization to two steps to deassert DDR reset signal * to comply with JEDEC specs for RDIMMs. */ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs, unsigned int ctrl_num, int step) { unsigned int i, bus_width; struct ccsr_ddr __iomem *ddr; u32 temp_sdram_cfg; u32 total_gb_size_per_controller; int timeout; #if defined(CONFIG_SYS_FSL_ERRATUM_A008336) || \ defined(CONFIG_SYS_FSL_ERRATUM_A008514) u32 *eddrtqcr1; #endif #ifdef CONFIG_SYS_FSL_ERRATUM_A008511 u32 temp32, mr6; #endif #ifdef CONFIG_FSL_DDR_BIST u32 mtcr, err_detect, err_sbe; u32 cs0_bnds, cs1_bnds, cs2_bnds, cs3_bnds, cs0_config; #endif #ifdef CONFIG_FSL_DDR_BIST char buffer[CONFIG_SYS_CBSIZE]; #endif switch (ctrl_num) { case 0: ddr = (void *)CONFIG_SYS_FSL_DDR_ADDR; #if defined(CONFIG_SYS_FSL_ERRATUM_A008336) || \ defined(CONFIG_SYS_FSL_ERRATUM_A008514) eddrtqcr1 = (void *)CONFIG_SYS_FSL_DCSR_DDR_ADDR + 0x800; #endif break; #if defined(CONFIG_SYS_FSL_DDR2_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 1) case 1: ddr = (void *)CONFIG_SYS_FSL_DDR2_ADDR; #if defined(CONFIG_SYS_FSL_ERRATUM_A008336) || \ defined(CONFIG_SYS_FSL_ERRATUM_A008514) eddrtqcr1 = (void *)CONFIG_SYS_FSL_DCSR_DDR2_ADDR + 0x800; #endif break; #endif #if defined(CONFIG_SYS_FSL_DDR3_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 2) case 2: ddr = (void *)CONFIG_SYS_FSL_DDR3_ADDR; #if defined(CONFIG_SYS_FSL_ERRATUM_A008336) || \ defined(CONFIG_SYS_FSL_ERRATUM_A008514) eddrtqcr1 = (void *)CONFIG_SYS_FSL_DCSR_DDR3_ADDR + 0x800; #endif break; #endif #if defined(CONFIG_SYS_FSL_DDR4_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 3) case 3: ddr = (void *)CONFIG_SYS_FSL_DDR4_ADDR; #if defined(CONFIG_SYS_FSL_ERRATUM_A008336) || \ defined(CONFIG_SYS_FSL_ERRATUM_A008514) eddrtqcr1 = (void *)CONFIG_SYS_FSL_DCSR_DDR4_ADDR + 0x800; #endif break; #endif default: printf("%s unexpected ctrl_num = %u\n", __func__, ctrl_num); return; } if (step == 2) goto step2; #ifdef CONFIG_SYS_FSL_ERRATUM_A008336 #ifdef CONFIG_LS2085A /* A008336 only applies to general DDR controllers */ if ((ctrl_num == 0) || (ctrl_num == 1)) #endif ddr_out32(eddrtqcr1, 0x63b30002); #endif #ifdef CONFIG_SYS_FSL_ERRATUM_A008514 #ifdef CONFIG_LS2085A /* A008514 only applies to DP-DDR controler */ if (ctrl_num == 2) #endif ddr_out32(eddrtqcr1, 0x63b20002); #endif if (regs->ddr_eor) ddr_out32(&ddr->eor, regs->ddr_eor); ddr_out32(&ddr->sdram_clk_cntl, regs->ddr_sdram_clk_cntl); for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { if (i == 0) { ddr_out32(&ddr->cs0_bnds, regs->cs[i].bnds); ddr_out32(&ddr->cs0_config, regs->cs[i].config); ddr_out32(&ddr->cs0_config_2, regs->cs[i].config_2); } else if (i == 1) { ddr_out32(&ddr->cs1_bnds, regs->cs[i].bnds); ddr_out32(&ddr->cs1_config, regs->cs[i].config); ddr_out32(&ddr->cs1_config_2, regs->cs[i].config_2); } else if (i == 2) { ddr_out32(&ddr->cs2_bnds, regs->cs[i].bnds); ddr_out32(&ddr->cs2_config, regs->cs[i].config); ddr_out32(&ddr->cs2_config_2, regs->cs[i].config_2); } else if (i == 3) { ddr_out32(&ddr->cs3_bnds, regs->cs[i].bnds); ddr_out32(&ddr->cs3_config, regs->cs[i].config); ddr_out32(&ddr->cs3_config_2, regs->cs[i].config_2); } } ddr_out32(&ddr->timing_cfg_3, regs->timing_cfg_3); ddr_out32(&ddr->timing_cfg_0, regs->timing_cfg_0); ddr_out32(&ddr->timing_cfg_1, regs->timing_cfg_1); ddr_out32(&ddr->timing_cfg_2, regs->timing_cfg_2); ddr_out32(&ddr->timing_cfg_4, regs->timing_cfg_4); ddr_out32(&ddr->timing_cfg_5, regs->timing_cfg_5); ddr_out32(&ddr->timing_cfg_6, regs->timing_cfg_6); ddr_out32(&ddr->timing_cfg_7, regs->timing_cfg_7); ddr_out32(&ddr->timing_cfg_8, regs->timing_cfg_8); ddr_out32(&ddr->timing_cfg_9, regs->timing_cfg_9); ddr_out32(&ddr->ddr_zq_cntl, regs->ddr_zq_cntl); ddr_out32(&ddr->dq_map_0, regs->dq_map_0); ddr_out32(&ddr->dq_map_1, regs->dq_map_1); ddr_out32(&ddr->dq_map_2, regs->dq_map_2); ddr_out32(&ddr->dq_map_3, regs->dq_map_3); ddr_out32(&ddr->sdram_cfg_3, regs->ddr_sdram_cfg_3); ddr_out32(&ddr->sdram_mode, regs->ddr_sdram_mode); ddr_out32(&ddr->sdram_mode_2, regs->ddr_sdram_mode_2); ddr_out32(&ddr->sdram_mode_3, regs->ddr_sdram_mode_3); ddr_out32(&ddr->sdram_mode_4, regs->ddr_sdram_mode_4); ddr_out32(&ddr->sdram_mode_5, regs->ddr_sdram_mode_5); ddr_out32(&ddr->sdram_mode_6, regs->ddr_sdram_mode_6); ddr_out32(&ddr->sdram_mode_7, regs->ddr_sdram_mode_7); ddr_out32(&ddr->sdram_mode_8, regs->ddr_sdram_mode_8); ddr_out32(&ddr->sdram_mode_9, regs->ddr_sdram_mode_9); ddr_out32(&ddr->sdram_mode_10, regs->ddr_sdram_mode_10); ddr_out32(&ddr->sdram_mode_11, regs->ddr_sdram_mode_11); ddr_out32(&ddr->sdram_mode_12, regs->ddr_sdram_mode_12); ddr_out32(&ddr->sdram_mode_13, regs->ddr_sdram_mode_13); ddr_out32(&ddr->sdram_mode_14, regs->ddr_sdram_mode_14); ddr_out32(&ddr->sdram_mode_15, regs->ddr_sdram_mode_15); ddr_out32(&ddr->sdram_mode_16, regs->ddr_sdram_mode_16); ddr_out32(&ddr->sdram_md_cntl, regs->ddr_sdram_md_cntl); ddr_out32(&ddr->sdram_interval, regs->ddr_sdram_interval); ddr_out32(&ddr->sdram_data_init, regs->ddr_data_init); ddr_out32(&ddr->ddr_wrlvl_cntl, regs->ddr_wrlvl_cntl); #ifndef CONFIG_SYS_FSL_DDR_EMU /* * Skip these two registers if running on emulator * because emulator doesn't have skew between bytes. */ if (regs->ddr_wrlvl_cntl_2) ddr_out32(&ddr->ddr_wrlvl_cntl_2, regs->ddr_wrlvl_cntl_2); if (regs->ddr_wrlvl_cntl_3) ddr_out32(&ddr->ddr_wrlvl_cntl_3, regs->ddr_wrlvl_cntl_3); #endif ddr_out32(&ddr->ddr_sr_cntr, regs->ddr_sr_cntr); ddr_out32(&ddr->ddr_sdram_rcw_1, regs->ddr_sdram_rcw_1); ddr_out32(&ddr->ddr_sdram_rcw_2, regs->ddr_sdram_rcw_2); ddr_out32(&ddr->ddr_sdram_rcw_3, regs->ddr_sdram_rcw_3); ddr_out32(&ddr->ddr_sdram_rcw_4, regs->ddr_sdram_rcw_4); ddr_out32(&ddr->ddr_sdram_rcw_5, regs->ddr_sdram_rcw_5); ddr_out32(&ddr->ddr_sdram_rcw_6, regs->ddr_sdram_rcw_6); ddr_out32(&ddr->ddr_cdr1, regs->ddr_cdr1); #ifdef CONFIG_DEEP_SLEEP if (is_warm_boot()) { ddr_out32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2 & ~SDRAM_CFG2_D_INIT); ddr_out32(&ddr->init_addr, CONFIG_SYS_SDRAM_BASE); ddr_out32(&ddr->init_ext_addr, DDR_INIT_ADDR_EXT_UIA); /* DRAM VRef will not be trained */ ddr_out32(&ddr->ddr_cdr2, regs->ddr_cdr2 & ~DDR_CDR2_VREF_TRAIN_EN); } else #endif { ddr_out32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2); ddr_out32(&ddr->init_addr, regs->ddr_init_addr); ddr_out32(&ddr->init_ext_addr, regs->ddr_init_ext_addr); ddr_out32(&ddr->ddr_cdr2, regs->ddr_cdr2); } ddr_out32(&ddr->err_disable, regs->err_disable); ddr_out32(&ddr->err_int_en, regs->err_int_en); for (i = 0; i < 32; i++) { if (regs->debug[i]) { debug("Write to debug_%d as %08x\n", i+1, regs->debug[i]); ddr_out32(&ddr->debug[i], regs->debug[i]); } } #ifdef CONFIG_SYS_FSL_ERRATUM_A008378 /* Erratum applies when accumulated ECC is used, or DBI is enabled */ #define IS_ACC_ECC_EN(v) ((v) & 0x4) #define IS_DBI(v) ((((v) >> 12) & 0x3) == 0x2) if (IS_ACC_ECC_EN(regs->ddr_sdram_cfg) || IS_DBI(regs->ddr_sdram_cfg_3)) ddr_setbits32(ddr->debug[28], 0x9 << 20); #endif #ifdef CONFIG_SYS_FSL_ERRATUM_A008511 /* Part 1 of 2 */ /* This erraum only applies to verion 5.2.0 */ if (fsl_ddr_get_version(ctrl_num) == 0x50200) { /* Disable DRAM VRef training */ ddr_out32(&ddr->ddr_cdr2, regs->ddr_cdr2 & ~DDR_CDR2_VREF_TRAIN_EN); /* Disable deskew */ ddr_out32(&ddr->debug[28], 0x400); /* Disable D_INIT */ ddr_out32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2 & ~SDRAM_CFG2_D_INIT); ddr_out32(&ddr->debug[25], 0x9000); } #endif /* * For RDIMMs, JEDEC spec requires clocks to be stable before reset is * deasserted. Clocks start when any chip select is enabled and clock * control register is set. Because all DDR components are connected to * one reset signal, this needs to be done in two steps. Step 1 is to * get the clocks started. Step 2 resumes after reset signal is * deasserted. */ if (step == 1) { udelay(200); return; } step2: /* Set, but do not enable the memory */ temp_sdram_cfg = regs->ddr_sdram_cfg; temp_sdram_cfg &= ~(SDRAM_CFG_MEM_EN); ddr_out32(&ddr->sdram_cfg, temp_sdram_cfg); /* * 500 painful micro-seconds must elapse between * the DDR clock setup and the DDR config enable. * DDR2 need 200 us, and DDR3 need 500 us from spec, * we choose the max, that is 500 us for all of case. */ udelay(500); mb(); isb(); #ifdef CONFIG_DEEP_SLEEP if (is_warm_boot()) { /* enter self-refresh */ temp_sdram_cfg = ddr_in32(&ddr->sdram_cfg_2); temp_sdram_cfg |= SDRAM_CFG2_FRC_SR; ddr_out32(&ddr->sdram_cfg_2, temp_sdram_cfg); /* do board specific memory setup */ board_mem_sleep_setup(); temp_sdram_cfg = (ddr_in32(&ddr->sdram_cfg) | SDRAM_CFG_BI); } else #endif temp_sdram_cfg = ddr_in32(&ddr->sdram_cfg) & ~SDRAM_CFG_BI; /* Let the controller go */ ddr_out32(&ddr->sdram_cfg, temp_sdram_cfg | SDRAM_CFG_MEM_EN); mb(); isb(); #ifdef CONFIG_SYS_FSL_ERRATUM_A008511 /* Part 2 of 2 */ /* This erraum only applies to verion 5.2.0 */ if (fsl_ddr_get_version(ctrl_num) == 0x50200) { /* Wait for idle */ timeout = 200; while (!(ddr_in32(&ddr->debug[1]) & 0x2) && (timeout > 0)) { udelay(100); timeout--; } if (timeout <= 0) { printf("Controler %d timeout, debug_2 = %x\n", ctrl_num, ddr_in32(&ddr->debug[1])); } /* Set VREF */ for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { if (!(regs->cs[i].config & SDRAM_CS_CONFIG_EN)) continue; mr6 = (regs->ddr_sdram_mode_10 >> 16) | MD_CNTL_MD_EN | MD_CNTL_CS_SEL(i) | MD_CNTL_MD_SEL(6) | 0x00200000; temp32 = mr6 | 0xc0; set_wait_for_bits_clear(&ddr->sdram_md_cntl, temp32, MD_CNTL_MD_EN); udelay(1); debug("MR6 = 0x%08x\n", temp32); temp32 = mr6 | 0xf0; set_wait_for_bits_clear(&ddr->sdram_md_cntl, temp32, MD_CNTL_MD_EN); udelay(1); debug("MR6 = 0x%08x\n", temp32); temp32 = mr6 | 0x70; set_wait_for_bits_clear(&ddr->sdram_md_cntl, temp32, MD_CNTL_MD_EN); udelay(1); debug("MR6 = 0x%08x\n", temp32); } ddr_out32(&ddr->sdram_md_cntl, 0); ddr_out32(&ddr->debug[28], 0); /* Enable deskew */ ddr_out32(&ddr->debug[1], 0x400); /* restart deskew */ /* wait for idle */ timeout = 200; while (!(ddr_in32(&ddr->debug[1]) & 0x2) && (timeout > 0)) { udelay(100); timeout--; } if (timeout <= 0) { printf("Controler %d timeout, debug_2 = %x\n", ctrl_num, ddr_in32(&ddr->debug[1])); } /* Restore D_INIT */ ddr_out32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2); } #endif /* CONFIG_SYS_FSL_ERRATUM_A008511 */ total_gb_size_per_controller = 0; for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { if (!(regs->cs[i].config & 0x80000000)) continue; total_gb_size_per_controller += 1 << ( ((regs->cs[i].config >> 14) & 0x3) + 2 + ((regs->cs[i].config >> 8) & 0x7) + 12 + ((regs->cs[i].config >> 4) & 0x3) + 0 + ((regs->cs[i].config >> 0) & 0x7) + 8 + 3 - ((regs->ddr_sdram_cfg >> 19) & 0x3) - 26); /* minus 26 (count of 64M) */ } if (fsl_ddr_get_intl3r() & 0x80000000) /* 3-way interleaving */ total_gb_size_per_controller *= 3; else if (regs->cs[0].config & 0x20000000) /* 2-way interleaving */ total_gb_size_per_controller <<= 1; /* * total memory / bus width = transactions needed * transactions needed / data rate = seconds * to add plenty of buffer, double the time * For example, 2GB on 666MT/s 64-bit bus takes about 402ms * Let's wait for 800ms */ bus_width = 3 - ((ddr_in32(&ddr->sdram_cfg) & SDRAM_CFG_DBW_MASK) >> SDRAM_CFG_DBW_SHIFT); timeout = ((total_gb_size_per_controller << (6 - bus_width)) * 100 / (get_ddr_freq(ctrl_num) >> 20)) << 2; total_gb_size_per_controller >>= 4; /* shift down to gb size */ debug("total %d GB\n", total_gb_size_per_controller); debug("Need to wait up to %d * 10ms\n", timeout); /* Poll DDR_SDRAM_CFG_2[D_INIT] bit until auto-data init is done. */ while ((ddr_in32(&ddr->sdram_cfg_2) & SDRAM_CFG2_D_INIT) && (timeout >= 0)) { udelay(10000); /* throttle polling rate */ timeout--; } if (timeout <= 0) printf("Waiting for D_INIT timeout. Memory may not work.\n"); #ifdef CONFIG_DEEP_SLEEP if (is_warm_boot()) { /* exit self-refresh */ temp_sdram_cfg = ddr_in32(&ddr->sdram_cfg_2); temp_sdram_cfg &= ~SDRAM_CFG2_FRC_SR; ddr_out32(&ddr->sdram_cfg_2, temp_sdram_cfg); } #endif #ifdef CONFIG_FSL_DDR_BIST #define BIST_PATTERN1 0xFFFFFFFF #define BIST_PATTERN2 0x0 #define BIST_CR 0x80010000 #define BIST_CR_EN 0x80000000 #define BIST_CR_STAT 0x00000001 #define CTLR_INTLV_MASK 0x20000000 /* Perform build-in test on memory. Three-way interleaving is not yet * supported by this code. */ if (getenv_f("ddr_bist", buffer, CONFIG_SYS_CBSIZE) >= 0) { puts("Running BIST test. This will take a while..."); cs0_config = ddr_in32(&ddr->cs0_config); if (cs0_config & CTLR_INTLV_MASK) { cs0_bnds = ddr_in32(&cs0_bnds); cs1_bnds = ddr_in32(&cs1_bnds); cs2_bnds = ddr_in32(&cs2_bnds); cs3_bnds = ddr_in32(&cs3_bnds); /* set bnds to non-interleaving */ ddr_out32(&cs0_bnds, (cs0_bnds & 0xfffefffe) >> 1); ddr_out32(&cs1_bnds, (cs1_bnds & 0xfffefffe) >> 1); ddr_out32(&cs2_bnds, (cs2_bnds & 0xfffefffe) >> 1); ddr_out32(&cs3_bnds, (cs3_bnds & 0xfffefffe) >> 1); } ddr_out32(&ddr->mtp1, BIST_PATTERN1); ddr_out32(&ddr->mtp2, BIST_PATTERN1); ddr_out32(&ddr->mtp3, BIST_PATTERN2); ddr_out32(&ddr->mtp4, BIST_PATTERN2); ddr_out32(&ddr->mtp5, BIST_PATTERN1); ddr_out32(&ddr->mtp6, BIST_PATTERN1); ddr_out32(&ddr->mtp7, BIST_PATTERN2); ddr_out32(&ddr->mtp8, BIST_PATTERN2); ddr_out32(&ddr->mtp9, BIST_PATTERN1); ddr_out32(&ddr->mtp10, BIST_PATTERN2); mtcr = BIST_CR; ddr_out32(&ddr->mtcr, mtcr); timeout = 100; while (timeout > 0 && (mtcr & BIST_CR_EN)) { mdelay(1000); timeout--; mtcr = ddr_in32(&ddr->mtcr); } if (timeout <= 0) puts("Timeout\n"); else puts("Done\n"); err_detect = ddr_in32(&ddr->err_detect); err_sbe = ddr_in32(&ddr->err_sbe); if (mtcr & BIST_CR_STAT) { printf("BIST test failed on controller %d.\n", ctrl_num); } if (err_detect || (err_sbe & 0xffff)) { printf("ECC error detected on controller %d.\n", ctrl_num); } if (cs0_config & CTLR_INTLV_MASK) { /* restore bnds registers */ ddr_out32(&cs0_bnds, cs0_bnds); ddr_out32(&cs1_bnds, cs1_bnds); ddr_out32(&cs2_bnds, cs2_bnds); ddr_out32(&cs3_bnds, cs3_bnds); } } #endif }