X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=arch%2Farm%2Fcpu%2Farmv7%2Fomap-common%2Femif-common.c;h=ece365507c21510f8953299e0a12a5ad91798d09;hb=1a4596601fd395f3afb8f82f3f840c5e00bdd57a;hp=db509c92951cd2ca3dcdd659e54949e135e02d63;hpb=f40107345cbcd6e0d1747eda45e76c4e2a6df0db;p=karo-tx-uboot.git diff --git a/arch/arm/cpu/armv7/omap-common/emif-common.c b/arch/arm/cpu/armv7/omap-common/emif-common.c index db509c9295..ece365507c 100644 --- a/arch/arm/cpu/armv7/omap-common/emif-common.c +++ b/arch/arm/cpu/armv7/omap-common/emif-common.c @@ -6,31 +6,39 @@ * * Aneesh V * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA + * SPDX-License-Identifier: GPL-2.0+ */ #include #include -#include +#include #include #include #include +#include + +static int emif1_enabled = -1, emif2_enabled = -1; + +void set_lpmode_selfrefresh(u32 base) +{ + struct emif_reg_struct *emif = (struct emif_reg_struct *)base; + u32 reg; + + reg = readl(&emif->emif_pwr_mgmt_ctrl); + reg &= ~EMIF_REG_LP_MODE_MASK; + reg |= LP_MODE_SELF_REFRESH << EMIF_REG_LP_MODE_SHIFT; + reg &= ~EMIF_REG_SR_TIM_MASK; + writel(reg, &emif->emif_pwr_mgmt_ctrl); + + /* dummy read for the new SR_TIM to be loaded */ + readl(&emif->emif_pwr_mgmt_ctrl); +} + +void force_emif_self_refresh() +{ + set_lpmode_selfrefresh(EMIF1_BASE); + set_lpmode_selfrefresh(EMIF2_BASE); +} inline u32 emif_num(u32 base) { @@ -42,6 +50,19 @@ inline u32 emif_num(u32 base) return 0; } +/* + * Get SDRAM type connected to EMIF. + * Assuming similar SDRAM parts are connected to both EMIF's + * which is typically the case. So it is sufficient to get + * SDRAM type from EMIF1. + */ +u32 emif_sdram_type() +{ + struct emif_reg_struct *emif = (struct emif_reg_struct *)EMIF1_BASE; + + return (readl(&emif->emif_sdram_config) & + EMIF_REG_SDRAM_TYPE_MASK) >> EMIF_REG_SDRAM_TYPE_SHIFT; +} static inline u32 get_mr(u32 base, u32 cs, u32 mr_addr) { @@ -56,7 +77,12 @@ static inline u32 get_mr(u32 base, u32 cs, u32 mr_addr) mr = readl(&emif->emif_lpddr2_mode_reg_data); debug("get_mr: EMIF%d cs %d mr %08x val 0x%x\n", emif_num(base), cs, mr_addr, mr); - return mr; + if (((mr & 0x0000ff00) >> 8) == (mr & 0xff) && + ((mr & 0x00ff0000) >> 16) == (mr & 0xff) && + ((mr & 0xff000000) >> 24) == (mr & 0xff)) + return mr & 0xff; + else + return mr; } static inline void set_mr(u32 base, u32 cs, u32 mr_addr, u32 mr_val) @@ -81,11 +107,13 @@ void emif_reset_phy(u32 base) static void do_lpddr2_init(u32 base, u32 cs) { u32 mr_addr; + const struct lpddr2_mr_regs *mr_regs; + get_lpddr2_mr_regs(&mr_regs); /* Wait till device auto initialization is complete */ while (get_mr(base, cs, LPDDR2_MR0) & LPDDR2_MR0_DAI_MASK) ; - set_mr(base, cs, LPDDR2_MR10, MR10_ZQ_ZQINIT); + set_mr(base, cs, LPDDR2_MR10, mr_regs->mr10); /* * tZQINIT = 1 us * Enough loops assuming a maximum of 2GHz @@ -93,30 +121,23 @@ static void do_lpddr2_init(u32 base, u32 cs) sdelay(2000); - if (omap_revision() >= OMAP5430_ES1_0) - set_mr(base, cs, LPDDR2_MR1, MR1_BL_8_BT_SEQ_WRAP_EN_NWR_8); - else - set_mr(base, cs, LPDDR2_MR1, MR1_BL_8_BT_SEQ_WRAP_EN_NWR_3); - - set_mr(base, cs, LPDDR2_MR16, MR16_REF_FULL_ARRAY); + set_mr(base, cs, LPDDR2_MR1, mr_regs->mr1); + set_mr(base, cs, LPDDR2_MR16, mr_regs->mr16); /* * Enable refresh along with writing MR2 * Encoding of RL in MR2 is (RL - 2) */ mr_addr = LPDDR2_MR2 | EMIF_REG_REFRESH_EN_MASK; - set_mr(base, cs, mr_addr, RL_FINAL - 2); + set_mr(base, cs, mr_addr, mr_regs->mr2); - if (omap_revision() >= OMAP5430_ES1_0) - set_mr(base, cs, LPDDR2_MR3, 0x1); + if (mr_regs->mr3 > 0) + set_mr(base, cs, LPDDR2_MR3, mr_regs->mr3); } static void lpddr2_init(u32 base, const struct emif_regs *regs) { struct emif_reg_struct *emif = (struct emif_reg_struct *)base; - u32 *ext_phy_ctrl_base = 0; - u32 *emif_ext_phy_ctrl_base = 0; - u32 i = 0; /* Not NVM */ clrbits_le32(&emif->emif_lpddr2_nvm_config, EMIF_REG_CS1NVMEN_MASK); @@ -134,29 +155,7 @@ static void lpddr2_init(u32 base, const struct emif_regs *regs) writel(regs->sdram_config_init, &emif->emif_sdram_config); writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1); - ext_phy_ctrl_base = (u32 *) &(regs->emif_ddr_ext_phy_ctrl_1); - emif_ext_phy_ctrl_base = (u32 *) &(emif->emif_ddr_ext_phy_ctrl_1); - - if (omap_revision() >= OMAP5430_ES1_0) { - /* Configure external phy control timing registers */ - for (i = 0; i < EMIF_EXT_PHY_CTRL_TIMING_REG; i++) { - writel(*ext_phy_ctrl_base, emif_ext_phy_ctrl_base++); - /* Update shadow registers */ - writel(*ext_phy_ctrl_base++, emif_ext_phy_ctrl_base++); - } - - /* - * external phy 6-24 registers do not change with - * ddr frequency - */ - for (i = 0; i < EMIF_EXT_PHY_CTRL_CONST_REG; i++) { - writel(ext_phy_ctrl_const_base[i], - emif_ext_phy_ctrl_base++); - /* Update shadow registers */ - writel(ext_phy_ctrl_const_base[i], - emif_ext_phy_ctrl_base++); - } - } + do_ext_phy_settings(base, regs); do_lpddr2_init(base, CS0); if (regs->sdram_config & EMIF_REG_EBANK_MASK) @@ -168,6 +167,10 @@ static void lpddr2_init(u32 base, const struct emif_regs *regs) /* Enable refresh now */ clrbits_le32(&emif->emif_sdram_ref_ctrl, EMIF_REG_INITREF_DIS_MASK); + } + +__weak void do_ext_phy_settings(u32 base, const struct emif_regs *regs) +{ } void emif_update_timings(u32 base, const struct emif_regs *regs) @@ -190,7 +193,8 @@ void emif_update_timings(u32 base, const struct emif_regs *regs) writel(regs->temp_alert_config, &emif->emif_temp_alert_config); writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1_shdw); - if (omap_revision() == OMAP5430_ES1_0) { + if ((omap_revision() >= OMAP5430_ES1_0) || + (omap_revision() == DRA752_ES1_0)) { writel(EMIF_L3_CONFIG_VAL_SYS_10_MPU_5_LL_0, &emif->emif_l3_config); } else if (omap_revision() >= OMAP4460_ES1_0) { @@ -202,6 +206,94 @@ void emif_update_timings(u32 base, const struct emif_regs *regs) } } +static void ddr3_leveling(u32 base, const struct emif_regs *regs) +{ + struct emif_reg_struct *emif = (struct emif_reg_struct *)base; + + /* keep sdram in self-refresh */ + writel(((LP_MODE_SELF_REFRESH << EMIF_REG_LP_MODE_SHIFT) + & EMIF_REG_LP_MODE_MASK), &emif->emif_pwr_mgmt_ctrl); + __udelay(130); + + /* + * Set invert_clkout (if activated)--DDR_PHYCTRL_1 + * Invert clock adds an additional half cycle delay on the command + * interface. The additional half cycle, is usually meant to enable + * leveling in the situation that DQS is later than CK on the board.It + * also helps provide some additional margin for leveling. + */ + writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1); + writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1_shdw); + __udelay(130); + + writel(((LP_MODE_DISABLE << EMIF_REG_LP_MODE_SHIFT) + & EMIF_REG_LP_MODE_MASK), &emif->emif_pwr_mgmt_ctrl); + + /* Launch Full leveling */ + writel(DDR3_FULL_LVL, &emif->emif_rd_wr_lvl_ctl); + + /* Wait till full leveling is complete */ + readl(&emif->emif_rd_wr_lvl_ctl); + __udelay(130); + + /* Read data eye leveling no of samples */ + config_data_eye_leveling_samples(base); + + /* Launch 8 incremental WR_LVL- to compensate for PHY limitation */ + writel(0x2 << EMIF_REG_WRLVLINC_INT_SHIFT, &emif->emif_rd_wr_lvl_ctl); + __udelay(130); + + /* Launch Incremental leveling */ + writel(DDR3_INC_LVL, &emif->emif_rd_wr_lvl_ctl); + __udelay(130); +} + +static void ddr3_sw_leveling(u32 base, const struct emif_regs *regs) +{ + struct emif_reg_struct *emif = (struct emif_reg_struct *)base; + + writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1); + writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1_shdw); + config_data_eye_leveling_samples(base); + + writel(regs->emif_rd_wr_lvl_ctl, &emif->emif_rd_wr_lvl_ctl); + writel(regs->sdram_config, &emif->emif_sdram_config); +} + +static void ddr3_init(u32 base, const struct emif_regs *regs) +{ + struct emif_reg_struct *emif = (struct emif_reg_struct *)base; + + /* + * Set SDRAM_CONFIG and PHY control registers to locked frequency + * and RL =7. As the default values of the Mode Registers are not + * defined, contents of mode Registers must be fully initialized. + * H/W takes care of this initialization + */ + writel(regs->sdram_config2, &emif->emif_lpddr2_nvm_config); + writel(regs->sdram_config_init, &emif->emif_sdram_config); + + writel(regs->emif_ddr_phy_ctlr_1_init, &emif->emif_ddr_phy_ctrl_1); + + /* Update timing registers */ + writel(regs->sdram_tim1, &emif->emif_sdram_tim_1); + writel(regs->sdram_tim2, &emif->emif_sdram_tim_2); + writel(regs->sdram_tim3, &emif->emif_sdram_tim_3); + + writel(regs->ref_ctrl, &emif->emif_sdram_ref_ctrl); + writel(regs->read_idle_ctrl, &emif->emif_read_idlectrl); + + do_ext_phy_settings(base, regs); + + /* enable leveling */ + writel(regs->emif_rd_wr_lvl_rmp_ctl, &emif->emif_rd_wr_lvl_rmp_ctl); + + if (omap_revision() == DRA752_ES1_0) + ddr3_sw_leveling(base, regs); + else + ddr3_leveling(base, regs); +} + #ifndef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS #define print_timing_reg(reg) debug(#reg" - 0x%08x\n", (reg)) @@ -564,20 +656,27 @@ static u32 get_ddr_phy_ctrl_1(u32 freq, u8 RL) return phy; } -static u32 get_emif_mem_size(struct emif_device_details *devices) +static u32 get_emif_mem_size(u32 base) { u32 size_mbytes = 0, temp; + struct emif_device_details dev_details; + struct lpddr2_device_details cs0_dev_details, cs1_dev_details; + u32 emif_nr = emif_num(base); - if (!devices) - return 0; + emif_reset_phy(base); + dev_details.cs0_device_details = emif_get_device_details(emif_nr, CS0, + &cs0_dev_details); + dev_details.cs1_device_details = emif_get_device_details(emif_nr, CS1, + &cs1_dev_details); + emif_reset_phy(base); - if (devices->cs0_device_details) { - temp = devices->cs0_device_details->density; + if (dev_details.cs0_device_details) { + temp = dev_details.cs0_device_details->density; size_mbytes += lpddr2_density_2_size_in_mbytes[temp]; } - if (devices->cs1_device_details) { - temp = devices->cs1_device_details->density; + if (dev_details.cs1_device_details) { + temp = dev_details.cs1_device_details->density; size_mbytes += lpddr2_density_2_size_in_mbytes[temp]; } /* convert to bytes */ @@ -826,7 +925,7 @@ static u8 is_lpddr2_sdram_present(u32 base, u32 cs, } mr = get_mr(base, cs, LPDDR2_MR5); - if (mr >= 0xFF) { + if (mr > 0xFF) { /* Mode register value bigger than 8 bit */ return 0; } @@ -895,7 +994,7 @@ struct lpddr2_device_details *emif_get_device_details(u32 emif_nr, u8 cs, return NULL; /* Do the minimum init for mode register accesses */ - if (!running_from_sdram()) { + if (!(running_from_sdram() || warm_reset())) { phy = get_ddr_phy_ctrl_1(get_sys_clk_freq() / 2, RL_BOOT); writel(phy, &emif->emif_ddr_phy_ctrl_1); } @@ -949,13 +1048,9 @@ static void do_sdram_init(u32 base) /* Return if no devices on this EMIF */ if (!dev_details.cs0_device_details && !dev_details.cs1_device_details) { - emif_sizes[emif_nr - 1] = 0; return; } - if (!in_sdram) - emif_sizes[emif_nr - 1] = get_emif_mem_size(&dev_details); - /* * Get device timings: * - Default timings specified by JESD209-2 if @@ -975,8 +1070,20 @@ static void do_sdram_init(u32 base) * Changing the timing registers in EMIF can happen(going from one * OPP to another) */ - if (!in_sdram) - lpddr2_init(base, regs); + if (!(in_sdram || warm_reset())) { + if (emif_sdram_type() == EMIF_SDRAM_TYPE_LPDDR2) + lpddr2_init(base, regs); + else + ddr3_init(base, regs); + } + if (warm_reset() && (emif_sdram_type() == EMIF_SDRAM_TYPE_DDR3)) { + set_lpmode_selfrefresh(base); + emif_reset_phy(base); + if (omap_revision() == DRA752_ES1_0) + ddr3_sw_leveling(base, regs); + else + ddr3_leveling(base, regs); + } /* Write to the shadow registers */ emif_update_timings(base, regs); @@ -989,9 +1096,6 @@ void emif_post_init_config(u32 base) struct emif_reg_struct *emif = (struct emif_reg_struct *)base; u32 omap_rev = omap_revision(); - if (omap_rev == OMAP5430_ES1_0) - return; - /* reset phy on ES2.0 */ if (omap_rev == OMAP4430_ES2_0) emif_reset_phy(base); @@ -1004,6 +1108,7 @@ void emif_post_init_config(u32 base) void dmm_init(u32 base) { const struct dmm_lisa_map_regs *lisa_map_regs; + u32 i, section, valid; #ifdef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS emif_get_dmm_regs(&lisa_map_regs); @@ -1015,8 +1120,8 @@ void dmm_init(u32 base) mapped_size = 0; section_cnt = 3; sys_addr = CONFIG_SYS_SDRAM_BASE; - emif1_size = emif_sizes[0]; - emif2_size = emif_sizes[1]; + emif1_size = get_emif_mem_size(EMIF1_BASE); + emif2_size = get_emif_mem_size(EMIF2_BASE); debug("emif1_size 0x%x emif2_size 0x%x\n", emif1_size, emif2_size); if (!emif1_size && !emif2_size) @@ -1079,6 +1184,9 @@ void dmm_init(u32 base) /* TRAP for invalid TILER mappings in section 0 */ lis_map_regs_calculated.dmm_lisa_map_0 = DMM_LISA_MAP_0_INVAL_ADDR_TRAP; + if (omap_revision() >= OMAP4460_ES1_0) + lis_map_regs_calculated.is_ma_present = 1; + lisa_map_regs = &lis_map_regs_calculated; #endif struct dmm_lisa_map_regs *hw_lisa_map_regs = @@ -1098,7 +1206,7 @@ void dmm_init(u32 base) writel(lisa_map_regs->dmm_lisa_map_0, &hw_lisa_map_regs->dmm_lisa_map_0); - if (omap_revision() >= OMAP4460_ES1_0) { + if (lisa_map_regs->is_ma_present) { hw_lisa_map_regs = (struct dmm_lisa_map_regs *)MA_BASE; @@ -1111,6 +1219,29 @@ void dmm_init(u32 base) writel(lisa_map_regs->dmm_lisa_map_0, &hw_lisa_map_regs->dmm_lisa_map_0); } + + /* + * EMIF should be configured only when + * memory is mapped on it. Using emif1_enabled + * and emif2_enabled variables for this. + */ + emif1_enabled = 0; + emif2_enabled = 0; + for (i = 0; i < 4; i++) { + section = __raw_readl(DMM_BASE + i*4); + valid = (section & EMIF_SDRC_MAP_MASK) >> + (EMIF_SDRC_MAP_SHIFT); + if (valid == 3) { + emif1_enabled = 1; + emif2_enabled = 1; + break; + } else if (valid == 1) { + emif1_enabled = 1; + } else if (valid == 2) { + emif2_enabled = 1; + } + } + } /* @@ -1133,6 +1264,7 @@ void dmm_init(u32 base) void sdram_init(void) { u32 in_sdram, size_prog, size_detect; + u32 sdram_type = emif_sdram_type(); debug(">>sdram_init()\n"); @@ -1142,25 +1274,39 @@ void sdram_init(void) in_sdram = running_from_sdram(); debug("in_sdram = %d\n", in_sdram); + if (!in_sdram) { + if ((sdram_type == EMIF_SDRAM_TYPE_LPDDR2) && !warm_reset()) + bypass_dpll((*prcm)->cm_clkmode_dpll_core); + else if (sdram_type == EMIF_SDRAM_TYPE_DDR3) + writel(CM_DLL_CTRL_NO_OVERRIDE, (*prcm)->cm_dll_ctrl); + } + if (!in_sdram) - bypass_dpll(&prcm->cm_clkmode_dpll_core); + dmm_init(DMM_BASE); + if (emif1_enabled) + do_sdram_init(EMIF1_BASE); - do_sdram_init(EMIF1_BASE); - do_sdram_init(EMIF2_BASE); + if (emif2_enabled) + do_sdram_init(EMIF2_BASE); - if (!in_sdram) { - dmm_init(DMM_BASE); - emif_post_init_config(EMIF1_BASE); - emif_post_init_config(EMIF2_BASE); + if (!(in_sdram || warm_reset())) { + if (emif1_enabled) + emif_post_init_config(EMIF1_BASE); + if (emif2_enabled) + emif_post_init_config(EMIF2_BASE); } /* for the shadow registers to take effect */ - freq_update_core(); + if (sdram_type == EMIF_SDRAM_TYPE_LPDDR2) + freq_update_core(); /* Do some testing after the init */ if (!in_sdram) { size_prog = omap_sdram_size(); + size_prog = log_2_n_round_down(size_prog); + size_prog = (1 << size_prog); + size_detect = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, size_prog); /* Compare with the size programmed */