Philipp Hug | 9159572 | 2018-09-13 22:18:06 +0200 | [diff] [blame^] | 1 | /* Copyright (c) 2018 SiFive, Inc */ |
| 2 | /* SPDX-License-Identifier: Apache-2.0 */ |
| 3 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| 4 | /* See the file LICENSE for further information */ |
| 5 | |
| 6 | #ifndef _SIFIVE_UX00DDR_H |
| 7 | #define _SIFIVE_UX00DDR_H |
| 8 | |
| 9 | #ifndef __ASSEMBLER__ |
| 10 | |
| 11 | #include <stdint.h> |
| 12 | #include <stddef.h> |
| 13 | |
| 14 | #define _REG32(p, i) (*(volatile uint32_t *)((p) + (i))) |
| 15 | |
| 16 | #define DRAM_CLASS_OFFSET 8 |
| 17 | #define DRAM_CLASS_DDR4 0xA |
| 18 | #define OPTIMAL_RMODW_EN_OFFSET 0 |
| 19 | #define DISABLE_RD_INTERLEAVE_OFFSET 16 |
| 20 | #define OUT_OF_RANGE_OFFSET 1 |
| 21 | #define MULTIPLE_OUT_OF_RANGE_OFFSET 2 |
| 22 | #define PORT_COMMAND_CHANNEL_ERROR_OFFSET 7 |
| 23 | #define MC_INIT_COMPLETE_OFFSET 8 |
| 24 | #define LEVELING_OPERATION_COMPLETED_OFFSET 22 |
| 25 | #define DFI_PHY_WRLELV_MODE_OFFSET 24 |
| 26 | #define DFI_PHY_RDLVL_MODE_OFFSET 24 |
| 27 | #define DFI_PHY_RDLVL_GATE_MODE_OFFSET 0 |
| 28 | #define VREF_EN_OFFSET 24 |
| 29 | #define PORT_ADDR_PROTECTION_EN_OFFSET 0 |
| 30 | #define AXI0_ADDRESS_RANGE_ENABLE 8 |
| 31 | #define AXI0_RANGE_PROT_BITS_0_OFFSET 24 |
| 32 | #define RDLVL_EN_OFFSET 16 |
| 33 | #define RDLVL_GATE_EN_OFFSET 24 |
| 34 | #define WRLVL_EN_OFFSET 0 |
| 35 | |
| 36 | #define PHY_RX_CAL_DQ0_0_OFFSET 0 |
| 37 | #define PHY_RX_CAL_DQ1_0_OFFSET 16 |
| 38 | |
| 39 | static inline void phy_reset(volatile uint32_t *ddrphyreg, const uint32_t *physettings) { |
| 40 | unsigned int i; |
| 41 | for (i=1152;i<=1214;i++) { |
| 42 | uint32_t physet = physettings[i]; |
| 43 | /*if (physet!=0)*/ ddrphyreg[i] = physet; |
| 44 | } |
| 45 | for (i=0;i<=1151;i++) { |
| 46 | uint32_t physet = physettings[i]; |
| 47 | /*if (physet!=0)*/ ddrphyreg[i] = physet; |
| 48 | } |
| 49 | } |
| 50 | |
| 51 | |
| 52 | static inline void ux00ddr_writeregmap(size_t ahbregaddr, const uint32_t *ctlsettings, const uint32_t *physettings) { |
| 53 | volatile uint32_t *ddrctlreg = (volatile uint32_t *) ahbregaddr; |
| 54 | volatile uint32_t *ddrphyreg = ((volatile uint32_t *) ahbregaddr) + (0x2000 / sizeof(uint32_t)); |
| 55 | |
| 56 | unsigned int i; |
| 57 | for (i=0;i<=264;i++) { |
| 58 | uint32_t ctlset = ctlsettings[i]; |
| 59 | /*if (ctlset!=0)*/ ddrctlreg[i] = ctlset; |
| 60 | } |
| 61 | |
| 62 | phy_reset(ddrphyreg, physettings); |
| 63 | } |
| 64 | |
| 65 | static inline void ux00ddr_start(size_t ahbregaddr, size_t filteraddr, size_t ddrend) { |
| 66 | // START register at ddrctl register base offset 0 |
| 67 | uint32_t regdata = _REG32(0<<2, ahbregaddr); |
| 68 | regdata |= 0x1; |
| 69 | _REG32(0<<2, ahbregaddr) = regdata; |
| 70 | // WAIT for initialization complete : bit 8 of INT_STATUS (DENALI_CTL_132) 0x210 |
| 71 | while ((_REG32(132<<2, ahbregaddr) & (1<<MC_INIT_COMPLETE_OFFSET)) == 0) {} |
| 72 | |
| 73 | // Disable the BusBlocker in front of the controller AXI slave ports |
| 74 | volatile uint64_t *filterreg = (volatile uint64_t *)filteraddr; |
| 75 | filterreg[0] = 0x0f00000000000000UL | (ddrend >> 2); |
| 76 | // ^^ RWX + TOR |
| 77 | } |
| 78 | |
| 79 | static inline void ux00ddr_mask_mc_init_complete_interrupt(size_t ahbregaddr) { |
| 80 | // Mask off Bit 8 of Interrupt Status |
| 81 | // Bit [8] The MC initialization has been completed |
| 82 | _REG32(136<<2, ahbregaddr) |= (1<<MC_INIT_COMPLETE_OFFSET); |
| 83 | } |
| 84 | |
| 85 | static inline void ux00ddr_mask_outofrange_interrupts(size_t ahbregaddr) { |
| 86 | // Mask off Bit 8, Bit 2 and Bit 1 of Interrupt Status |
| 87 | // Bit [2] Multiple accesses outside the defined PHYSICAL memory space have occured |
| 88 | // Bit [1] A memory access outside the defined PHYSICAL memory space has occured |
| 89 | _REG32(136<<2, ahbregaddr) |= ((1<<OUT_OF_RANGE_OFFSET) | (1<<MULTIPLE_OUT_OF_RANGE_OFFSET)); |
| 90 | } |
| 91 | |
| 92 | static inline void ux00ddr_mask_port_command_error_interrupt(size_t ahbregaddr) { |
| 93 | // Mask off Bit 7 of Interrupt Status |
| 94 | // Bit [7] An error occured on the port command channel |
| 95 | _REG32(136<<2, ahbregaddr) |= (1<<PORT_COMMAND_CHANNEL_ERROR_OFFSET); |
| 96 | } |
| 97 | |
| 98 | static inline void ux00ddr_mask_leveling_completed_interrupt(size_t ahbregaddr) { |
| 99 | // Mask off Bit 22 of Interrupt Status |
| 100 | // Bit [22] The leveling operation has completed |
| 101 | _REG32(136<<2, ahbregaddr) |= (1<<LEVELING_OPERATION_COMPLETED_OFFSET); |
| 102 | } |
| 103 | |
| 104 | static inline void ux00ddr_setuprangeprotection(size_t ahbregaddr, size_t end_addr) { |
| 105 | _REG32(209<<2, ahbregaddr) = 0x0; |
| 106 | size_t end_addr_16Kblocks = ((end_addr >> 14) & 0x7FFFFF)-1; |
| 107 | _REG32(210<<2, ahbregaddr) = ((uint32_t) end_addr_16Kblocks); |
| 108 | _REG32(212<<2, ahbregaddr) = 0x0; |
| 109 | _REG32(214<<2, ahbregaddr) = 0x0; |
| 110 | _REG32(216<<2, ahbregaddr) = 0x0; |
| 111 | _REG32(224<<2, ahbregaddr) |= (0x3 << AXI0_RANGE_PROT_BITS_0_OFFSET); |
| 112 | _REG32(225<<2, ahbregaddr) = 0xFFFFFFFF; |
| 113 | _REG32(208<<2, ahbregaddr) |= (1 << AXI0_ADDRESS_RANGE_ENABLE); |
| 114 | _REG32(208<<2, ahbregaddr) |= (1 << PORT_ADDR_PROTECTION_EN_OFFSET); |
| 115 | |
| 116 | } |
| 117 | |
| 118 | static inline void ux00ddr_disableaxireadinterleave(size_t ahbregaddr) { |
| 119 | _REG32(120<<2, ahbregaddr) |= (1<<DISABLE_RD_INTERLEAVE_OFFSET); |
| 120 | } |
| 121 | |
| 122 | static inline void ux00ddr_disableoptimalrmodw(size_t ahbregaddr) { |
| 123 | _REG32(21<<2, ahbregaddr) &= (~(1<<OPTIMAL_RMODW_EN_OFFSET)); |
| 124 | } |
| 125 | |
| 126 | static inline void ux00ddr_enablewriteleveling(size_t ahbregaddr) { |
| 127 | _REG32(170<<2, ahbregaddr) |= ((1<<WRLVL_EN_OFFSET) | (1<<DFI_PHY_WRLELV_MODE_OFFSET)); |
| 128 | } |
| 129 | |
| 130 | static inline void ux00ddr_enablereadleveling(size_t ahbregaddr) { |
| 131 | _REG32(181<<2, ahbregaddr) |= (1<<DFI_PHY_RDLVL_MODE_OFFSET); |
| 132 | _REG32(260<<2, ahbregaddr) |= (1<<RDLVL_EN_OFFSET); |
| 133 | } |
| 134 | |
| 135 | static inline void ux00ddr_enablereadlevelinggate(size_t ahbregaddr) { |
| 136 | _REG32(260<<2, ahbregaddr) |= (1<<RDLVL_GATE_EN_OFFSET); |
| 137 | _REG32(182<<2, ahbregaddr) |= (1<<DFI_PHY_RDLVL_GATE_MODE_OFFSET); |
| 138 | } |
| 139 | |
| 140 | static inline void ux00ddr_enablevreftraining(size_t ahbregaddr) { |
| 141 | _REG32(184<<2, ahbregaddr) |= (1<<VREF_EN_OFFSET); |
| 142 | } |
| 143 | |
| 144 | static inline uint32_t ux00ddr_getdramclass(size_t ahbregaddr) { |
| 145 | return ((_REG32(0, ahbregaddr) >> DRAM_CLASS_OFFSET) & 0xF); |
| 146 | } |
| 147 | |
| 148 | static inline uint64_t ux00ddr_phy_fixup(size_t ahbregaddr) { |
| 149 | // return bitmask of failed lanes |
| 150 | |
| 151 | size_t ddrphyreg = ahbregaddr + 0x2000; |
| 152 | |
| 153 | uint64_t fails=0; |
| 154 | uint32_t slicebase = 0; |
| 155 | uint32_t dq = 0; |
| 156 | |
| 157 | // check errata condition |
| 158 | for (uint32_t slice = 0; slice < 8; slice++) { |
| 159 | uint32_t regbase = slicebase + 34; |
| 160 | for (uint32_t reg = 0 ; reg < 4; reg++) { |
| 161 | uint32_t updownreg = _REG32((regbase+reg)<<2, ddrphyreg); |
| 162 | for (uint32_t bit = 0; bit < 2; bit++) { |
| 163 | uint32_t phy_rx_cal_dqn_0_offset; |
| 164 | |
| 165 | if (bit==0) { |
| 166 | phy_rx_cal_dqn_0_offset = PHY_RX_CAL_DQ0_0_OFFSET; |
| 167 | }else{ |
| 168 | phy_rx_cal_dqn_0_offset = PHY_RX_CAL_DQ1_0_OFFSET; |
| 169 | } |
| 170 | |
| 171 | uint32_t down = (updownreg >> phy_rx_cal_dqn_0_offset) & 0x3F; |
| 172 | uint32_t up = (updownreg >> (phy_rx_cal_dqn_0_offset+6)) & 0x3F; |
| 173 | |
| 174 | uint8_t failc0 = ((down == 0) && (up == 0x3F)); |
| 175 | uint8_t failc1 = ((up == 0) && (down == 0x3F)); |
| 176 | |
| 177 | // print error message on failure |
| 178 | if (failc0 || failc1) { |
| 179 | //if (fails==0) uart_puts((void*) UART0_CTRL_ADDR, "DDR error in fixing up \n"); |
| 180 | fails |= (1<<dq); |
| 181 | char slicelsc = '0'; |
| 182 | char slicemsc = '0'; |
| 183 | slicelsc += (dq % 10); |
| 184 | slicemsc += (dq / 10); |
| 185 | //uart_puts((void*) UART0_CTRL_ADDR, "S "); |
| 186 | //uart_puts((void*) UART0_CTRL_ADDR, &slicemsc); |
| 187 | //uart_puts((void*) UART0_CTRL_ADDR, &slicelsc); |
| 188 | //if (failc0) uart_puts((void*) UART0_CTRL_ADDR, "U"); |
| 189 | //else uart_puts((void*) UART0_CTRL_ADDR, "D"); |
| 190 | //uart_puts((void*) UART0_CTRL_ADDR, "\n"); |
| 191 | } |
| 192 | dq++; |
| 193 | } |
| 194 | } |
| 195 | slicebase+=128; |
| 196 | } |
| 197 | return (0); |
| 198 | } |
| 199 | |
| 200 | #endif |
| 201 | |
| 202 | #endif |