/* SPDX-License-Identifier: GPL-2.0-or-later */ #include uint32_t get_ddr_voltage(uint8_t ddr_voltage) { /* SPD Byte 11: Module Nominal Voltage, currently DDR4 only supports 1.2V. Either Bit 0 or Bit 1 is set, return 1.2V */ if (ddr_voltage & 0x3) return 1200; return 0; } unsigned int get_ddr_millivolt(unsigned int ddr_voltage) { switch (ddr_voltage) { case SPD_VDD_DDR4: return 1200; case SPD_VDD_DDR5: return 1100; default: return 0; } } unsigned int get_max_memory_speed(unsigned int common_tck) { if (common_tck <= DDR_8400_TCK_MIN) return 8400; else if (common_tck <= DDR_7600_TCK_MIN) return 7600; else if (common_tck <= DDR_7200_TCK_MIN) return 7200; else if (common_tck <= DDR_6800_TCK_MIN) return 6800; else if (common_tck <= DDR_6400_TCK_MIN) return 6400; else if (common_tck <= DDR_6000_TCK_MIN) return 6000; else if (common_tck <= DDR_5600_TCK_MIN) return 5600; else if (common_tck <= DDR_5200_TCK_MIN) return 5200; else if (common_tck <= DDR_4800_TCK_MIN) return 4800; else if (common_tck <= DDR_4400_TCK_MIN) return 4400; else if (common_tck <= DDR_4266_TCK_MIN) return 4266; else if (common_tck <= DDR_4200_TCK_MIN) return 4200; else if (common_tck <= DDR_4000_TCK_MIN) return 4000; else if (common_tck <= DDR_3800_TCK_MIN) return 3800; else if (common_tck <= DDR_3733_TCK_MIN) return 3733; else if (common_tck <= DDR_3600_TCK_MIN) return 3600; else if (common_tck <= DDR_3466_TCK_MIN) return 3466; else if (common_tck <= DDR_3400_TCK_MIN) return 3400; else if (common_tck <= DDR_3200_TCK_MIN) return 3200; else if (common_tck <= DDR_3000_TCK_MIN) return 3000; else if (common_tck <= DDR_2933_TCK_MIN) return 2933; else if (common_tck <= DDR_2800_TCK_MIN) return 2800; else if (common_tck <= DDR_2666_TCK_MIN) return 2666; else if (common_tck <= DDR_2600_TCK_MIN) return 2600; else if (common_tck <= DDR_2400_TCK_MIN) return 2400; else if (common_tck <= DDR_2200_TCK_MIN) return 2200; else if (common_tck <= DDR_2133_TCK_MIN) return 2133; else if (common_tck <= DDR_2000_TCK_MIN) return 2000; else if (common_tck <= DDR_1866_TCK_MIN) return 1866; else if (common_tck <= DDR_1800_TCK_MIN) return 1800; else if (common_tck <= DDR_1600_TCK_MIN) return 1600; else if (common_tck <= DDR_1400_TCK_MIN) return 1400; else if (common_tck <= DDR_1333_TCK_MIN) return 1333; else if (common_tck <= DDR_1200_TCK_MIN) return 1200; else if (common_tck <= DDR_1066_TCK_MIN) return 1066; else if (common_tck <= DDR_1000_TCK_MIN) return 1000; else return 800; } __weak bool mainboard_dimm_slot_exists(uint8_t socket, uint8_t channel, uint8_t slot) { return false; }