/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */ /* * Copyright (c) 2018 Microsemi Corporation */ #ifndef __ASM_MACH_DDR_H #define __ASM_MACH_DDR_H #include #include #include #include #define MIPS_VCOREIII_MEMORY_DDR3 #define MIPS_VCOREIII_DDR_SIZE CONFIG_SYS_SDRAM_SIZE #if defined(CONFIG_DDRTYPE_H5TQ1G63BFA) /* Serval1 Refboard */ /* Hynix H5TQ1G63BFA (1Gbit DDR3, x16) @ 3.20ns */ #define VC3_MPAR_bank_addr_cnt 3 #define VC3_MPAR_row_addr_cnt 13 #define VC3_MPAR_col_addr_cnt 10 #define VC3_MPAR_tREFI 2437 #define VC3_MPAR_tRAS_min 12 #define VC3_MPAR_CL 6 #define VC3_MPAR_tWTR 4 #define VC3_MPAR_tRC 16 #define VC3_MPR_tFAW 16 #define VC3_MPAR_tRP 5 #define VC3_MPAR_tRRD 4 #define VC3_MPAR_tRCD 5 #define VC3_MPAR_tMRD 4 #define VC3_MPAR_tRFC 35 #define VC3_MPAR_CWL 5 #define VC3_MPAR_tXPR 38 #define VC3_MPAR_tMOD 12 #define VC3_MPAR_tDLLK 512 #define VC3_MPAR_tWR 5 #elif defined(CONFIG_DDRTYPE_MT41J128M16HA) /* Validation board */ /* Micron MT41J128M16HA-15E:D (2Gbit DDR3, x16) @ 3.20ns */ #define VC3_MPAR_bank_addr_cnt 3 #define VC3_MPAR_row_addr_cnt 14 #define VC3_MPAR_col_addr_cnt 10 #define VC3_MPAR_tREFI 2437 #define VC3_MPAR_tRAS_min 12 #define VC3_MPAR_CL 5 #define VC3_MPAR_tWTR 4 #define VC3_MPAR_tRC 16 #define VC3_MPAR_tFAW 16 #define VC3_MPAR_tRP 5 #define VC3_MPAR_tRRD 4 #define VC3_MPAR_tRCD 5 #define VC3_MPAR_tMRD 4 #define VC3_MPAR_tRFC 50 #define VC3_MPAR_CWL 5 #define VC3_MPAR_tXPR 54 #define VC3_MPAR_tMOD 12 #define VC3_MPAR_tDLLK 512 #define VC3_MPAR_tWR 5 #elif defined(CONFIG_DDRTYPE_MT41K256M16) /* JR2 Validation board */ /* Micron MT41K256M16 (4Gbit, DDR3L-800, 256Mbitx16) @ 3.20ns */ #define VC3_MPAR_bank_addr_cnt 3 #define VC3_MPAR_row_addr_cnt 15 #define VC3_MPAR_col_addr_cnt 10 #define VC3_MPAR_tREFI 2437 #define VC3_MPAR_tRAS_min 12 #define VC3_MPAR_CL 5 #define VC3_MPAR_tWTR 4 #define VC3_MPAR_tRC 16 #define VC3_MPAR_tFAW 16 #define VC3_MPAR_tRP 5 #define VC3_MPAR_tRRD 4 #define VC3_MPAR_tRCD 5 #define VC3_MPAR_tMRD 4 #define VC3_MPAR_tRFC 82 #define VC3_MPAR_CWL 5 #define VC3_MPAR_tXPR 85 #define VC3_MPAR_tMOD 12 #define VC3_MPAR_tDLLK 512 #define VC3_MPAR_tWR 5 #elif defined(CONFIG_DDRTYPE_H5TQ4G63MFR) /* JR2 Reference board */ /* Hynix H5TQ4G63MFR-PBC (4Gbit, DDR3-800, 256Mbitx16) - 2kb pages @ 3.20ns */ #define VC3_MPAR_bank_addr_cnt 3 #define VC3_MPAR_row_addr_cnt 15 #define VC3_MPAR_col_addr_cnt 10 #define VC3_MPAR_tREFI 2437 #define VC3_MPAR_tRAS_min 12 #define VC3_MPAR_CL 6 #define VC3_MPAR_tWTR 4 #define VC3_MPAR_tRC 17 #define VC3_MPAR_tFAW 16 #define VC3_MPAR_tRP 5 #define VC3_MPAR_tRRD 4 #define VC3_MPAR_tRCD 5 #define VC3_MPAR_tMRD 4 #define VC3_MPAR_tRFC 82 #define VC3_MPAR_CWL 5 #define VC3_MPAR_tXPR 85 #define VC3_MPAR_tMOD 12 #define VC3_MPAR_tDLLK 512 #define VC3_MPAR_tWR 5 #elif defined(CONFIG_DDRTYPE_MT41K128M16JT) /* Micron Micron MT41K128M16JT-125 (2Gbit DDR3L, 128Mbitx16) @ 3.20ns */ #define VC3_MPAR_bank_addr_cnt 3 #define VC3_MPAR_row_addr_cnt 14 #define VC3_MPAR_col_addr_cnt 10 #define VC3_MPAR_tREFI 2437 #define VC3_MPAR_tRAS_min 12 #define VC3_MPAR_CL 6 #define VC3_MPAR_tWTR 4 #define VC3_MPAR_tRC 16 #define VC3_MPAR_tFAW 16 #define VC3_MPAR_tRP 5 #define VC3_MPAR_tRRD 4 #define VC3_MPAR_tRCD 5 #define VC3_MPAR_tMRD 4 #define VC3_MPAR_tRFC 82 #define VC3_MPAR_CWL 5 #define VC3_MPAR_tXPR 85 #define VC3_MPAR_tMOD 12 #define VC3_MPAR_tDLLK 512 #define VC3_MPAR_tWR 5 #elif defined(CONFIG_DDRTYPE_MT47H128M8HQ) /* Luton10/26 Refboards */ /* Micron 1Gb MT47H128M8-3 16Meg x 8 x 8 banks, DDR-533@CL4 @ 4.80ns */ #define VC3_MPAR_bank_addr_cnt 3 #define VC3_MPAR_row_addr_cnt 14 #define VC3_MPAR_col_addr_cnt 10 #define VC3_MPAR_tREFI 1625 #define VC3_MPAR_tRAS_min 9 #define VC3_MPAR_CL 4 #define VC3_MPAR_tWTR 2 #define VC3_MPAR_tRC 12 #define VC3_MPAR_tFAW 8 #define VC3_MPAR_tRP 4 #define VC3_MPAR_tRRD 2 #define VC3_MPAR_tRCD 4 #define VC3_MPAR_tRPA 4 #define VC3_MPAR_tRP 4 #define VC3_MPAR_tMRD 2 #define VC3_MPAR_tRFC 27 #define VC3_MPAR__400_ns_dly 84 #define VC3_MPAR_tWR 4 #undef MIPS_VCOREIII_MEMORY_DDR3 #else #error Unknown DDR system configuration - please add! #endif #if defined(CONFIG_SOC_OCELOT) || defined(CONFIG_SOC_JR2) || \ defined(CONFIG_SOC_SERVALT) #define MIPS_VCOREIII_MEMORY_16BIT 1 #endif #define MIPS_VCOREIII_MEMORY_SSTL_ODT 7 #define MIPS_VCOREIII_MEMORY_SSTL_DRIVE 7 #define VCOREIII_DDR_DQS_MODE_CALIBRATE #ifdef MIPS_VCOREIII_MEMORY_16BIT #define VC3_MPAR_16BIT 1 #else #define VC3_MPAR_16BIT 0 #endif #ifdef MIPS_VCOREIII_MEMORY_DDR3 #define VC3_MPAR_DDR3_MODE 1 /* DDR3 */ #define VC3_MPAR_BURST_LENGTH 8 /* Always 8 (1) for DDR3 */ #ifdef MIPS_VCOREIII_MEMORY_16BIT #define VC3_MPAR_BURST_SIZE 1 /* Always 1 for DDR3/16bit */ #else #define VC3_MPAR_BURST_SIZE 0 #endif #else #define VC3_MPAR_DDR3_MODE 0 /* DDR2 */ #ifdef MIPS_VCOREIII_MEMORY_16BIT #define VC3_MPAR_BURST_LENGTH 4 /* in DDR2 16-bit mode, use burstlen 4 */ #else #define VC3_MPAR_BURST_LENGTH 8 /* For 8-bit IF we must run burst-8 */ #endif #define VC3_MPAR_BURST_SIZE 0 /* Always 0 for DDR2 */ #endif #define VC3_MPAR_RL VC3_MPAR_CL #if !defined(MIPS_VCOREIII_MEMORY_DDR3) #define VC3_MPAR_WL (VC3_MPAR_RL - 1) #define VC3_MPAR_MD VC3_MPAR_tMRD #define VC3_MPAR_ID VC3_MPAR__400_ns_dly #define VC3_MPAR_SD VC3_MPAR_tXSRD #define VC3_MPAR_OW (VC3_MPAR_WL - 2) #define VC3_MPAR_OR (VC3_MPAR_WL - 3) #define VC3_MPAR_RP (VC3_MPAR_bank_addr_cnt < 3 ? VC3_MPAR_tRP : VC3_MPAR_tRPA) #define VC3_MPAR_FAW (VC3_MPAR_bank_addr_cnt < 3 ? 1 : VC3_MPAR_tFAW) #define VC3_MPAR_BL (VC3_MPAR_BURST_LENGTH == 4 ? 2 : 4) #define MSCC_MEMPARM_MR0 \ (VC3_MPAR_BURST_LENGTH == 8 ? 3 : 2) | (VC3_MPAR_CL << 4) | \ ((VC3_MPAR_tWR - 1) << 9) /* DLL-on, Full-OD, AL=0, RTT=off, nDQS-on, RDQS-off, out-en */ #define MSCC_MEMPARM_MR1 0x382 #define MSCC_MEMPARM_MR2 0 #define MSCC_MEMPARM_MR3 0 #else #define VC3_MPAR_WL VC3_MPAR_CWL #define VC3_MPAR_MD VC3_MPAR_tMOD #define VC3_MPAR_ID VC3_MPAR_tXPR #define VC3_MPAR_SD VC3_MPAR_tDLLK #define VC3_MPAR_OW 2 #define VC3_MPAR_OR 2 #define VC3_MPAR_RP VC3_MPAR_tRP #define VC3_MPAR_FAW VC3_MPAR_tFAW #define VC3_MPAR_BL 4 #define MSCC_MEMPARM_MR0 ((VC3_MPAR_RL - 4) << 4) | ((VC3_MPAR_tWR - 4) << 9) /* ODT_RTT: “0x0040” for 120ohm, and “0x0004” for 60ohm. */ #define MSCC_MEMPARM_MR1 0x0040 #define MSCC_MEMPARM_MR2 ((VC3_MPAR_WL - 5) << 3) #define MSCC_MEMPARM_MR3 0 #endif /* MIPS_VCOREIII_MEMORY_DDR3 */ #define MSCC_MEMPARM_MEMCFG \ ((MIPS_VCOREIII_DDR_SIZE > SZ_512M) ? \ ICPU_MEMCTRL_CFG_DDR_512MBYTE_PLUS : 0) | \ (VC3_MPAR_16BIT ? ICPU_MEMCTRL_CFG_DDR_WIDTH : 0) | \ (VC3_MPAR_DDR3_MODE ? ICPU_MEMCTRL_CFG_DDR_MODE : 0) | \ (VC3_MPAR_BURST_SIZE ? ICPU_MEMCTRL_CFG_BURST_SIZE : 0) | \ (VC3_MPAR_BURST_LENGTH == 8 ? ICPU_MEMCTRL_CFG_BURST_LEN : 0) | \ (VC3_MPAR_bank_addr_cnt == 3 ? ICPU_MEMCTRL_CFG_BANK_CNT : 0) | \ ICPU_MEMCTRL_CFG_MSB_ROW_ADDR(VC3_MPAR_row_addr_cnt - 1) | \ ICPU_MEMCTRL_CFG_MSB_COL_ADDR(VC3_MPAR_col_addr_cnt - 1) #if defined(CONFIG_SOC_OCELOT) || defined(CONFIG_SOC_JR2) || \ defined(CONFIG_SOC_SERVALT) #define MSCC_MEMPARM_PERIOD \ ICPU_MEMCTRL_REF_PERIOD_MAX_PEND_REF(8) | \ ICPU_MEMCTRL_REF_PERIOD_REF_PERIOD(VC3_MPAR_tREFI) #define MSCC_MEMPARM_TIMING0 \ ICPU_MEMCTRL_TIMING0_RD_TO_WR_DLY(VC3_MPAR_RL + VC3_MPAR_BL + 1 - \ VC3_MPAR_WL) | \ ICPU_MEMCTRL_TIMING0_WR_CS_CHANGE_DLY(VC3_MPAR_BL - 1) | \ ICPU_MEMCTRL_TIMING0_RD_CS_CHANGE_DLY(VC3_MPAR_BL) | \ ICPU_MEMCTRL_TIMING0_RAS_TO_PRECH_DLY(VC3_MPAR_tRAS_min - 1) | \ ICPU_MEMCTRL_TIMING0_WR_TO_PRECH_DLY(VC3_MPAR_WL + \ VC3_MPAR_BL + \ VC3_MPAR_tWR - 1) | \ ICPU_MEMCTRL_TIMING0_RD_TO_PRECH_DLY(VC3_MPAR_BL - 1) | \ ICPU_MEMCTRL_TIMING0_WR_DATA_XFR_DLY(VC3_MPAR_WL - 1) | \ ICPU_MEMCTRL_TIMING0_RD_DATA_XFR_DLY(VC3_MPAR_RL - 3) #define MSCC_MEMPARM_TIMING1 \ ICPU_MEMCTRL_TIMING1_RAS_TO_RAS_SAME_BANK_DLY(VC3_MPAR_tRC - 1) | \ ICPU_MEMCTRL_TIMING1_BANK8_FAW_DLY(VC3_MPAR_FAW - 1) | \ ICPU_MEMCTRL_TIMING1_PRECH_TO_RAS_DLY(VC3_MPAR_RP - 1) | \ ICPU_MEMCTRL_TIMING1_RAS_TO_RAS_DLY(VC3_MPAR_tRRD - 1) | \ ICPU_MEMCTRL_TIMING1_RAS_TO_CAS_DLY(VC3_MPAR_tRCD - 1) | \ ICPU_MEMCTRL_TIMING1_WR_TO_RD_DLY(VC3_MPAR_WL + \ VC3_MPAR_BL + \ VC3_MPAR_tWTR - 1) #define MSCC_MEMPARM_TIMING2 \ ICPU_MEMCTRL_TIMING2_PRECH_ALL_DLY(VC3_MPAR_RP - 1) | \ ICPU_MEMCTRL_TIMING2_MDSET_DLY(VC3_MPAR_MD - 1) | \ ICPU_MEMCTRL_TIMING2_REF_DLY(VC3_MPAR_tRFC - 1) | \ ICPU_MEMCTRL_TIMING2_INIT_DLY(VC3_MPAR_ID - 1) #define MSCC_MEMPARM_TIMING3 \ ICPU_MEMCTRL_TIMING3_WR_TO_RD_CS_CHANGE_DLY(VC3_MPAR_WL + \ VC3_MPAR_tWTR - 1) |\ ICPU_MEMCTRL_TIMING3_ODT_RD_DLY(VC3_MPAR_OR - 1) | \ ICPU_MEMCTRL_TIMING3_ODT_WR_DLY(VC3_MPAR_OW - 1) | \ ICPU_MEMCTRL_TIMING3_LOCAL_ODT_RD_DLY(VC3_MPAR_RL - 3) #else #define MSCC_MEMPARM_PERIOD \ ICPU_MEMCTRL_REF_PERIOD_MAX_PEND_REF(1) | \ ICPU_MEMCTRL_REF_PERIOD_REF_PERIOD(VC3_MPAR_tREFI) #define MSCC_MEMPARM_TIMING0 \ ICPU_MEMCTRL_TIMING0_RAS_TO_PRECH_DLY(VC3_MPAR_tRAS_min - 1) | \ ICPU_MEMCTRL_TIMING0_WR_TO_PRECH_DLY(VC3_MPAR_CL + \ (VC3_MPAR_BURST_LENGTH == 8 ? 2 : 0) + \ VC3_MPAR_tWR) | \ ICPU_MEMCTRL_TIMING0_RD_TO_PRECH_DLY(VC3_MPAR_BURST_LENGTH == 8 ? 3 : 1) | \ ICPU_MEMCTRL_TIMING0_WR_DATA_XFR_DLY(VC3_MPAR_CL - 3) | \ ICPU_MEMCTRL_TIMING0_RD_DATA_XFR_DLY(VC3_MPAR_CL - 3) #define MSCC_MEMPARM_TIMING1 \ ICPU_MEMCTRL_TIMING1_RAS_TO_RAS_SAME_BANK_DLY(VC3_MPAR_tRC - 1) | \ ICPU_MEMCTRL_TIMING1_BANK8_FAW_DLY(VC3_MPAR_tFAW - 1) | \ ICPU_MEMCTRL_TIMING1_PRECH_TO_RAS_DLY(VC3_MPAR_tRP - 1) | \ ICPU_MEMCTRL_TIMING1_RAS_TO_RAS_DLY(VC3_MPAR_tRRD - 1) | \ ICPU_MEMCTRL_TIMING1_RAS_TO_CAS_DLY(VC3_MPAR_tRCD - 1) | \ ICPU_MEMCTRL_TIMING1_WR_TO_RD_DLY(VC3_MPAR_CL + \ (VC3_MPAR_BURST_LENGTH == 8 ? 2 : 0) + \ VC3_MPAR_tWTR) #define MSCC_MEMPARM_TIMING2 \ ICPU_MEMCTRL_TIMING2_PRECH_ALL_DLY(VC3_MPAR_tRPA - 1) | \ ICPU_MEMCTRL_TIMING2_MDSET_DLY(VC3_MPAR_tMRD - 1) | \ ICPU_MEMCTRL_TIMING2_REF_DLY(VC3_MPAR_tRFC - 1) | \ ICPU_MEMCTRL_TIMING2_FOUR_HUNDRED_NS_DLY(VC3_MPAR__400_ns_dly) #define MSCC_MEMPARM_TIMING3 \ ICPU_MEMCTRL_TIMING3_WR_TO_RD_CS_CHANGE_DLY(VC3_MPAR_CL - 1) | \ ICPU_MEMCTRL_TIMING3_ODT_WR_DLY(VC3_MPAR_CL - 1) | \ ICPU_MEMCTRL_TIMING3_LOCAL_ODT_RD_DLY(VC3_MPAR_CL - 1) #endif enum { DDR_TRAIN_OK, DDR_TRAIN_CONTINUE, DDR_TRAIN_ERROR, }; /* * We actually have very few 'pause' possibilities apart from * these assembly nops (at this very early stage). */ #define PAUSE() asm volatile("nop; nop; nop; nop; nop; nop; nop; nop") /* NB: Assumes inlining as no stack is available! */ static inline void set_dly(u32 bytelane, u32 dly) { register u32 r = readl(BASE_CFG + ICPU_MEMCTRL_DQS_DLY(bytelane)); r &= ~ICPU_MEMCTRL_DQS_DLY_DQS_DLY_M; r |= ICPU_MEMCTRL_DQS_DLY_DQS_DLY(dly); writel(r, BASE_CFG + ICPU_MEMCTRL_DQS_DLY(bytelane)); } static inline bool incr_dly(u32 bytelane) { register u32 r = readl(BASE_CFG + ICPU_MEMCTRL_DQS_DLY(bytelane)); if (ICPU_MEMCTRL_DQS_DLY_DQS_DLY(r) < 31) { writel(r + 1, BASE_CFG + ICPU_MEMCTRL_DQS_DLY(bytelane)); return true; } return false; } static inline bool adjust_dly(int adjust) { register u32 r = readl(BASE_CFG + ICPU_MEMCTRL_DQS_DLY(0)); if (ICPU_MEMCTRL_DQS_DLY_DQS_DLY(r) < 31) { writel(r + adjust, BASE_CFG + ICPU_MEMCTRL_DQS_DLY(0)); return true; } return false; } /* NB: Assumes inlining as no stack is available! */ static inline void center_dly(u32 bytelane, u32 start) { register u32 r = readl(BASE_CFG + ICPU_MEMCTRL_DQS_DLY(bytelane)) - start; writel(start + (r >> 1), BASE_CFG + ICPU_MEMCTRL_DQS_DLY(bytelane)); } static inline void memphy_soft_reset(void) { setbits_le32(BASE_CFG + ICPU_MEMPHY_CFG, ICPU_MEMPHY_CFG_PHY_FIFO_RST); PAUSE(); clrbits_le32(BASE_CFG + ICPU_MEMPHY_CFG, ICPU_MEMPHY_CFG_PHY_FIFO_RST); PAUSE(); } #if defined(CONFIG_SOC_OCELOT) || defined(CONFIG_SOC_JR2) || \ defined(CONFIG_SOC_SERVALT) static u8 training_data[] = { 0xfe, 0x11, 0x33, 0x55, 0x77, 0x99, 0xbb, 0xdd }; static inline void sleep_100ns(u32 val) { /* Set the timer tick generator to 100 ns */ writel(VCOREIII_TIMER_DIVIDER - 1, BASE_CFG + ICPU_TIMER_TICK_DIV); /* Set the timer value */ writel(val, BASE_CFG + ICPU_TIMER_VALUE(0)); /* Enable timer 0 for one-shot */ writel(ICPU_TIMER_CTRL_ONE_SHOT_ENA | ICPU_TIMER_CTRL_TIMER_ENA, BASE_CFG + ICPU_TIMER_CTRL(0)); /* Wait for timer 0 to reach 0 */ while (readl(BASE_CFG + ICPU_TIMER_VALUE(0)) != 0) ; } #if defined(CONFIG_SOC_OCELOT) static inline void hal_vcoreiii_ddr_reset_assert(void) { /* DDR has reset pin on GPIO 19 toggle Low-High to release */ setbits_le32(BASE_DEVCPU_GCB + PERF_GPIO_OE, BIT(19)); writel(BIT(19), BASE_DEVCPU_GCB + PERF_GPIO_OUT_CLR); sleep_100ns(10000); } static inline void hal_vcoreiii_ddr_reset_release(void) { /* DDR has reset pin on GPIO 19 toggle Low-High to release */ setbits_le32(BASE_DEVCPU_GCB + PERF_GPIO_OE, BIT(19)); writel(BIT(19), BASE_DEVCPU_GCB + PERF_GPIO_OUT_SET); sleep_100ns(10000); } /* * DDR memory sanity checking failed, tally and do hard reset * * NB: Assumes inlining as no stack is available! */ static inline void hal_vcoreiii_ddr_failed(void) { register u32 reset; writel(readl(BASE_CFG + ICPU_GPR(6)) + 1, BASE_CFG + ICPU_GPR(6)); clrbits_le32(BASE_DEVCPU_GCB + PERF_GPIO_OE, BIT(19)); /* We have to execute the reset function from cache. Indeed, * the reboot workaround in _machine_restart() will change the * SPI NOR into SW bitbang. * * This will render the CPU unable to execute directly from * the NOR, which is why the reset instructions are prefetched * into the I-cache. * * When failing the DDR initialization we are executing from * NOR. * * The last instruction in _machine_restart() will reset the * MIPS CPU (and the cache), and the CPU will start executing * from the reset vector. */ reset = KSEG0ADDR(_machine_restart); icache_lock((void *)reset, 128); asm volatile ("jr %0"::"r" (reset)); panic("DDR init failed\n"); } #else /* JR2 || ServalT */ static inline void hal_vcoreiii_ddr_reset_assert(void) { /* Ensure the memory controller physical iface is forced reset */ writel(readl(BASE_CFG + ICPU_MEMPHY_CFG) | ICPU_MEMPHY_CFG_PHY_RST, BASE_CFG + ICPU_MEMPHY_CFG); /* Ensure the memory controller is forced reset */ writel(readl(BASE_CFG + ICPU_RESET) | ICPU_RESET_MEM_RST_FORCE, BASE_CFG + ICPU_RESET); } static inline void hal_vcoreiii_ddr_failed(void) { writel(0, BASE_CFG + ICPU_RESET); writel(PERF_SOFT_RST_SOFT_CHIP_RST, BASE_CFG + PERF_SOFT_RST); panic("DDR init failed\n"); } #endif /* * DDR memory sanity checking done, possibly enable ECC. * * NB: Assumes inlining as no stack is available! */ static inline void hal_vcoreiii_ddr_verified(void) { #ifdef MIPS_VCOREIII_MEMORY_ECC /* Finally, enable ECC */ register u32 val = readl(BASE_CFG + ICPU_MEMCTRL_CFG); val |= ICPU_MEMCTRL_CFG_DDR_ECC_ERR_ENA; val &= ~ICPU_MEMCTRL_CFG_BURST_SIZE; writel(val, BASE_CFG + ICPU_MEMCTRL_CFG); #endif /* Reset Status register - sticky bits */ writel(readl(BASE_CFG + ICPU_MEMCTRL_STAT), BASE_CFG + ICPU_MEMCTRL_STAT); } /* NB: Assumes inlining as no stack is available! */ static inline int look_for(u32 bytelane) { register u32 i; /* Reset FIFO in case any previous access failed */ for (i = 0; i < sizeof(training_data); i++) { register u32 byte; memphy_soft_reset(); /* Reset sticky bits */ writel(readl(BASE_CFG + ICPU_MEMCTRL_STAT), BASE_CFG + ICPU_MEMCTRL_STAT); /* Read data */ byte = __raw_readb((void __iomem *)MSCC_DDR_TO + bytelane + (i * 4)); /* * Prevent the compiler reordering the instruction so * the read of RAM happens after the check of the * errors. */ rmb(); if (readl(BASE_CFG + ICPU_MEMCTRL_STAT) & (ICPU_MEMCTRL_STAT_RDATA_MASKED | ICPU_MEMCTRL_STAT_RDATA_DUMMY)) { /* Noise on the line */ goto read_error; } /* If mismatch, increment DQS - if possible */ if (byte != training_data[i]) { read_error: if (!incr_dly(bytelane)) return DDR_TRAIN_ERROR; return DDR_TRAIN_CONTINUE; } } return DDR_TRAIN_OK; } /* NB: Assumes inlining as no stack is available! */ static inline int look_past(u32 bytelane) { register u32 i; /* Reset FIFO in case any previous access failed */ for (i = 0; i < sizeof(training_data); i++) { register u32 byte; memphy_soft_reset(); /* Ack sticky bits */ writel(readl(BASE_CFG + ICPU_MEMCTRL_STAT), BASE_CFG + ICPU_MEMCTRL_STAT); byte = __raw_readb((void __iomem *)MSCC_DDR_TO + bytelane + (i * 4)); /* * Prevent the compiler reordering the instruction so * the read of RAM happens after the check of the * errors. */ rmb(); if (readl(BASE_CFG + ICPU_MEMCTRL_STAT) & (ICPU_MEMCTRL_STAT_RDATA_MASKED | ICPU_MEMCTRL_STAT_RDATA_DUMMY)) { /* Noise on the line */ goto read_error; } /* Bail out when we see first mismatch */ if (byte != training_data[i]) { read_error: return DDR_TRAIN_OK; } } /* All data compares OK, increase DQS and retry */ if (!incr_dly(bytelane)) return DDR_TRAIN_ERROR; return DDR_TRAIN_CONTINUE; } static inline int hal_vcoreiii_train_bytelane(u32 bytelane) { register int res; register u32 dqs_s; set_dly(bytelane, 0); /* Start training at DQS=0 */ while ((res = look_for(bytelane)) == DDR_TRAIN_CONTINUE) ; if (res != DDR_TRAIN_OK) return res; dqs_s = readl(BASE_CFG + ICPU_MEMCTRL_DQS_DLY(bytelane)); while ((res = look_past(bytelane)) == DDR_TRAIN_CONTINUE) ; if (res != DDR_TRAIN_OK) return res; /* Reset FIFO - for good measure */ memphy_soft_reset(); /* Adjust to center [dqs_s;cur] */ center_dly(bytelane, dqs_s); return DDR_TRAIN_OK; } /* This algorithm is converted from the TCL training algorithm used * during silicon simulation. * NB: Assumes inlining as no stack is available! */ static inline int hal_vcoreiii_init_dqs(void) { #define MAX_DQS 32 register u32 i, j; for (i = 0; i < MAX_DQS; i++) { set_dly(0, i); /* Byte-lane 0 */ for (j = 0; j < MAX_DQS; j++) { __maybe_unused register u32 byte; set_dly(1, j); /* Byte-lane 1 */ /* Reset FIFO in case any previous access failed */ memphy_soft_reset(); writel(readl(BASE_CFG + ICPU_MEMCTRL_STAT), BASE_CFG + ICPU_MEMCTRL_STAT); byte = __raw_readb((void __iomem *)MSCC_DDR_TO); byte = __raw_readb((void __iomem *)(MSCC_DDR_TO + 1)); if (!(readl(BASE_CFG + ICPU_MEMCTRL_STAT) & (ICPU_MEMCTRL_STAT_RDATA_MASKED | ICPU_MEMCTRL_STAT_RDATA_DUMMY))) return 0; } } return -1; } static inline int dram_check(void) { register u32 i; for (i = 0; i < 8; i++) { __raw_writel(~i, (void __iomem *)(MSCC_DDR_TO + (i * 4))); if (__raw_readl((void __iomem *)(MSCC_DDR_TO + (i * 4))) != ~i) return 1; } return 0; } #else /* Luton */ static inline void sleep_100ns(u32 val) { } static inline void hal_vcoreiii_ddr_reset_assert(void) { setbits_le32(BASE_CFG + ICPU_MEMPHY_CFG, ICPU_MEMPHY_CFG_PHY_RST); setbits_le32(BASE_CFG + ICPU_RESET, ICPU_RESET_MEM_RST_FORCE); } static inline void hal_vcoreiii_ddr_reset_release(void) { } static inline void hal_vcoreiii_ddr_failed(void) { register u32 memphy_cfg = readl(BASE_CFG + ICPU_MEMPHY_CFG); /* Do a fifo reset and start over */ writel(memphy_cfg | ICPU_MEMPHY_CFG_PHY_FIFO_RST, BASE_CFG + ICPU_MEMPHY_CFG); writel(memphy_cfg & ~ICPU_MEMPHY_CFG_PHY_FIFO_RST, BASE_CFG + ICPU_MEMPHY_CFG); writel(memphy_cfg | ICPU_MEMPHY_CFG_PHY_FIFO_RST, BASE_CFG + ICPU_MEMPHY_CFG); } static inline void hal_vcoreiii_ddr_verified(void) { } static inline int look_for(u32 data) { register u32 byte = __raw_readb((void __iomem *)MSCC_DDR_TO); if (data != byte) { if (!incr_dly(0)) return DDR_TRAIN_ERROR; return DDR_TRAIN_CONTINUE; } return DDR_TRAIN_OK; } /* This algorithm is converted from the TCL training algorithm used * during silicon simulation. * NB: Assumes inlining as no stack is available! */ static inline int hal_vcoreiii_train_bytelane(u32 bytelane) { register int res; set_dly(bytelane, 0); /* Start training at DQS=0 */ while ((res = look_for(0xff)) == DDR_TRAIN_CONTINUE) ; if (res != DDR_TRAIN_OK) return res; set_dly(bytelane, 0); /* Start training at DQS=0 */ while ((res = look_for(0x00)) == DDR_TRAIN_CONTINUE) ; if (res != DDR_TRAIN_OK) return res; adjust_dly(-3); return DDR_TRAIN_OK; } static inline int hal_vcoreiii_init_dqs(void) { return 0; } static inline int dram_check(void) { register u32 i; for (i = 0; i < 8; i++) { __raw_writel(~i, (void __iomem *)(MSCC_DDR_TO + (i * 4))); if (__raw_readl((void __iomem *)(MSCC_DDR_TO + (i * 4))) != ~i) return 1; } return 0; } #endif /* * NB: Called *early* to init memory controller - assumes inlining as * no stack is available! */ static inline void hal_vcoreiii_init_memctl(void) { /* Ensure DDR is in reset */ hal_vcoreiii_ddr_reset_assert(); /* Wait maybe not needed, but ... */ PAUSE(); /* Drop sys ctl memory controller forced reset */ clrbits_le32(BASE_CFG + ICPU_RESET, ICPU_RESET_MEM_RST_FORCE); PAUSE(); /* Drop Reset, enable SSTL */ writel(ICPU_MEMPHY_CFG_PHY_SSTL_ENA, BASE_CFG + ICPU_MEMPHY_CFG); PAUSE(); /* Start the automatic SSTL output and ODT drive-strength calibration */ writel(ICPU_MEMPHY_ZCAL_ZCAL_PROG_ODT(MIPS_VCOREIII_MEMORY_SSTL_ODT) | /* drive strength */ ICPU_MEMPHY_ZCAL_ZCAL_PROG(MIPS_VCOREIII_MEMORY_SSTL_DRIVE) | /* Start calibration process */ ICPU_MEMPHY_ZCAL_ZCAL_ENA, BASE_CFG + ICPU_MEMPHY_ZCAL); /* Wait for ZCAL to clear */ while (readl(BASE_CFG + ICPU_MEMPHY_ZCAL) & ICPU_MEMPHY_ZCAL_ZCAL_ENA) ; #if defined(CONFIG_SOC_OCELOT) || defined(CONFIG_SOC_JR2) || \ defined(CONFIG_SOC_SERVALT) /* Check no ZCAL_ERR */ if (readl(BASE_CFG + ICPU_MEMPHY_ZCAL_STAT) & ICPU_MEMPHY_ZCAL_STAT_ZCAL_ERR) hal_vcoreiii_ddr_failed(); #endif /* Drive CL, CK, ODT */ setbits_le32(BASE_CFG + ICPU_MEMPHY_CFG, ICPU_MEMPHY_CFG_PHY_ODT_OE | ICPU_MEMPHY_CFG_PHY_CK_OE | ICPU_MEMPHY_CFG_PHY_CL_OE); /* Initialize memory controller */ writel(MSCC_MEMPARM_MEMCFG, BASE_CFG + ICPU_MEMCTRL_CFG); writel(MSCC_MEMPARM_PERIOD, BASE_CFG + ICPU_MEMCTRL_REF_PERIOD); #if defined(CONFIG_SOC_OCELOT) || defined(CONFIG_SOC_JR2) || \ defined(CONFIG_SOC_SERVALT) writel(MSCC_MEMPARM_TIMING0, BASE_CFG + ICPU_MEMCTRL_TIMING0); #else /* Luton */ clrbits_le32(BASE_CFG + ICPU_MEMCTRL_TIMING0, ((1 << 20) - 1)); setbits_le32(BASE_CFG + ICPU_MEMCTRL_TIMING0, MSCC_MEMPARM_TIMING0); #endif writel(MSCC_MEMPARM_TIMING1, BASE_CFG + ICPU_MEMCTRL_TIMING1); writel(MSCC_MEMPARM_TIMING2, BASE_CFG + ICPU_MEMCTRL_TIMING2); writel(MSCC_MEMPARM_TIMING3, BASE_CFG + ICPU_MEMCTRL_TIMING3); writel(MSCC_MEMPARM_MR0, BASE_CFG + ICPU_MEMCTRL_MR0_VAL); writel(MSCC_MEMPARM_MR1, BASE_CFG + ICPU_MEMCTRL_MR1_VAL); writel(MSCC_MEMPARM_MR2, BASE_CFG + ICPU_MEMCTRL_MR2_VAL); writel(MSCC_MEMPARM_MR3, BASE_CFG + ICPU_MEMCTRL_MR3_VAL); #if defined(CONFIG_SOC_OCELOT) /* Termination setup - enable ODT */ writel(ICPU_MEMCTRL_TERMRES_CTRL_LOCAL_ODT_RD_ENA | /* Assert ODT0 for any write */ ICPU_MEMCTRL_TERMRES_CTRL_ODT_WR_ENA(3), BASE_CFG + ICPU_MEMCTRL_TERMRES_CTRL); /* Release Reset from DDR */ hal_vcoreiii_ddr_reset_release(); writel(readl(BASE_CFG + ICPU_GPR(7)) + 1, BASE_CFG + ICPU_GPR(7)); #elif defined(CONFIG_SOC_JR2) || defined(CONFIG_SOC_SERVALT) writel(ICPU_MEMCTRL_TERMRES_CTRL_ODT_WR_ENA(3), BASE_CFG + ICPU_MEMCTRL_TERMRES_CTRL); #else /* Luton */ /* Termination setup - disable ODT */ writel(0, BASE_CFG + ICPU_MEMCTRL_TERMRES_CTRL); #endif } static inline void hal_vcoreiii_wait_memctl(void) { /* Now, rip it! */ writel(ICPU_MEMCTRL_CTRL_INITIALIZE, BASE_CFG + ICPU_MEMCTRL_CTRL); while (!(readl(BASE_CFG + ICPU_MEMCTRL_STAT) & ICPU_MEMCTRL_STAT_INIT_DONE)) ; /* Settle...? */ sleep_100ns(10000); #if defined(CONFIG_SOC_OCELOT) || defined(CONFIG_SOC_JR2) || \ defined(CONFIG_SOC_SERVALT) /* Establish data contents in DDR RAM for training */ __raw_writel(0xcacafefe, ((void __iomem *)MSCC_DDR_TO)); __raw_writel(0x22221111, ((void __iomem *)MSCC_DDR_TO + 0x4)); __raw_writel(0x44443333, ((void __iomem *)MSCC_DDR_TO + 0x8)); __raw_writel(0x66665555, ((void __iomem *)MSCC_DDR_TO + 0xC)); __raw_writel(0x88887777, ((void __iomem *)MSCC_DDR_TO + 0x10)); __raw_writel(0xaaaa9999, ((void __iomem *)MSCC_DDR_TO + 0x14)); __raw_writel(0xccccbbbb, ((void __iomem *)MSCC_DDR_TO + 0x18)); __raw_writel(0xeeeedddd, ((void __iomem *)MSCC_DDR_TO + 0x1C)); #else __raw_writel(0xff, ((void __iomem *)MSCC_DDR_TO)); #endif } #endif /* __ASM_MACH_DDR_H */