1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Based on Ocelot Linux port, which is 4 * Copyright 2001 MontaVista Software Inc. 5 * Author: jsun@mvista.com or jsun@junsun.net 6 * 7 * Copyright 2003 ICT CAS 8 * Author: Michael Guo <guoyi@ict.ac.cn> 9 * 10 * Copyright (C) 2007 Lemote Inc. & Institute of Computing Technology 11 * Author: Fuxin Zhang, zhangfx@lemote.com 12 * 13 * Copyright (C) 2009 Lemote Inc. 14 * Author: Wu Zhangjin, wuzhangjin@gmail.com 15 */ 16 #include <linux/export.h> 17 #include <asm/bootinfo.h> 18 #include <loongson.h> 19 #include <boot_param.h> 20 #include <workarounds.h> 21 22 u32 cpu_clock_freq; 23 EXPORT_SYMBOL(cpu_clock_freq); 24 struct efi_memory_map_loongson *loongson_memmap; 25 struct loongson_system_configuration loongson_sysconf; 26 27 u64 loongson_chipcfg[MAX_PACKAGES] = {0xffffffffbfc00180}; 28 u64 loongson_chiptemp[MAX_PACKAGES]; 29 u64 loongson_freqctrl[MAX_PACKAGES]; 30 31 unsigned long long smp_group[4]; 32 33 const char *get_system_type(void) 34 { 35 return "Generic Loongson64 System"; 36 } 37 38 void __init prom_init_env(void) 39 { 40 struct boot_params *boot_p; 41 struct loongson_params *loongson_p; 42 struct system_loongson *esys; 43 struct efi_cpuinfo_loongson *ecpu; 44 struct irq_source_routing_table *eirq_source; 45 46 /* firmware arguments are initialized in head.S */ 47 boot_p = (struct boot_params *)fw_arg2; 48 loongson_p = &(boot_p->efi.smbios.lp); 49 50 esys = (struct system_loongson *) 51 ((u64)loongson_p + loongson_p->system_offset); 52 ecpu = (struct efi_cpuinfo_loongson *) 53 ((u64)loongson_p + loongson_p->cpu_offset); 54 eirq_source = (struct irq_source_routing_table *) 55 ((u64)loongson_p + loongson_p->irq_offset); 56 loongson_memmap = (struct efi_memory_map_loongson *) 57 ((u64)loongson_p + loongson_p->memory_offset); 58 59 cpu_clock_freq = ecpu->cpu_clock_freq; 60 loongson_sysconf.cputype = ecpu->cputype; 61 switch (ecpu->cputype) { 62 case Legacy_3A: 63 case Loongson_3A: 64 loongson_sysconf.cores_per_node = 4; 65 loongson_sysconf.cores_per_package = 4; 66 smp_group[0] = 0x900000003ff01000; 67 smp_group[1] = 0x900010003ff01000; 68 smp_group[2] = 0x900020003ff01000; 69 smp_group[3] = 0x900030003ff01000; 70 loongson_chipcfg[0] = 0x900000001fe00180; 71 loongson_chipcfg[1] = 0x900010001fe00180; 72 loongson_chipcfg[2] = 0x900020001fe00180; 73 loongson_chipcfg[3] = 0x900030001fe00180; 74 loongson_chiptemp[0] = 0x900000001fe0019c; 75 loongson_chiptemp[1] = 0x900010001fe0019c; 76 loongson_chiptemp[2] = 0x900020001fe0019c; 77 loongson_chiptemp[3] = 0x900030001fe0019c; 78 loongson_freqctrl[0] = 0x900000001fe001d0; 79 loongson_freqctrl[1] = 0x900010001fe001d0; 80 loongson_freqctrl[2] = 0x900020001fe001d0; 81 loongson_freqctrl[3] = 0x900030001fe001d0; 82 loongson_sysconf.ht_control_base = 0x90000EFDFB000000; 83 loongson_sysconf.workarounds = WORKAROUND_CPUFREQ; 84 break; 85 case Legacy_3B: 86 case Loongson_3B: 87 loongson_sysconf.cores_per_node = 4; /* One chip has 2 nodes */ 88 loongson_sysconf.cores_per_package = 8; 89 smp_group[0] = 0x900000003ff01000; 90 smp_group[1] = 0x900010003ff05000; 91 smp_group[2] = 0x900020003ff09000; 92 smp_group[3] = 0x900030003ff0d000; 93 loongson_chipcfg[0] = 0x900000001fe00180; 94 loongson_chipcfg[1] = 0x900020001fe00180; 95 loongson_chipcfg[2] = 0x900040001fe00180; 96 loongson_chipcfg[3] = 0x900060001fe00180; 97 loongson_chiptemp[0] = 0x900000001fe0019c; 98 loongson_chiptemp[1] = 0x900020001fe0019c; 99 loongson_chiptemp[2] = 0x900040001fe0019c; 100 loongson_chiptemp[3] = 0x900060001fe0019c; 101 loongson_freqctrl[0] = 0x900000001fe001d0; 102 loongson_freqctrl[1] = 0x900020001fe001d0; 103 loongson_freqctrl[2] = 0x900040001fe001d0; 104 loongson_freqctrl[3] = 0x900060001fe001d0; 105 loongson_sysconf.ht_control_base = 0x90001EFDFB000000; 106 loongson_sysconf.workarounds = WORKAROUND_CPUHOTPLUG; 107 break; 108 default: 109 loongson_sysconf.cores_per_node = 1; 110 loongson_sysconf.cores_per_package = 1; 111 loongson_chipcfg[0] = 0x900000001fe00180; 112 } 113 114 loongson_sysconf.nr_cpus = ecpu->nr_cpus; 115 loongson_sysconf.boot_cpu_id = ecpu->cpu_startup_core_id; 116 loongson_sysconf.reserved_cpus_mask = ecpu->reserved_cores_mask; 117 if (ecpu->nr_cpus > NR_CPUS || ecpu->nr_cpus == 0) 118 loongson_sysconf.nr_cpus = NR_CPUS; 119 loongson_sysconf.nr_nodes = (loongson_sysconf.nr_cpus + 120 loongson_sysconf.cores_per_node - 1) / 121 loongson_sysconf.cores_per_node; 122 123 loongson_sysconf.pci_mem_start_addr = eirq_source->pci_mem_start_addr; 124 loongson_sysconf.pci_mem_end_addr = eirq_source->pci_mem_end_addr; 125 loongson_sysconf.pci_io_base = eirq_source->pci_io_start_addr; 126 loongson_sysconf.dma_mask_bits = eirq_source->dma_mask_bits; 127 if (loongson_sysconf.dma_mask_bits < 32 || 128 loongson_sysconf.dma_mask_bits > 64) 129 loongson_sysconf.dma_mask_bits = 32; 130 131 loongson_sysconf.restart_addr = boot_p->reset_system.ResetWarm; 132 loongson_sysconf.poweroff_addr = boot_p->reset_system.Shutdown; 133 loongson_sysconf.suspend_addr = boot_p->reset_system.DoSuspend; 134 135 loongson_sysconf.vgabios_addr = boot_p->efi.smbios.vga_bios; 136 pr_debug("Shutdown Addr: %llx, Restart Addr: %llx, VBIOS Addr: %llx\n", 137 loongson_sysconf.poweroff_addr, loongson_sysconf.restart_addr, 138 loongson_sysconf.vgabios_addr); 139 140 memset(loongson_sysconf.ecname, 0, 32); 141 if (esys->has_ec) 142 memcpy(loongson_sysconf.ecname, esys->ec_name, 32); 143 loongson_sysconf.workarounds |= esys->workarounds; 144 145 loongson_sysconf.nr_uarts = esys->nr_uarts; 146 if (esys->nr_uarts < 1 || esys->nr_uarts > MAX_UARTS) 147 loongson_sysconf.nr_uarts = 1; 148 memcpy(loongson_sysconf.uarts, esys->uarts, 149 sizeof(struct uart_device) * loongson_sysconf.nr_uarts); 150 151 loongson_sysconf.nr_sensors = esys->nr_sensors; 152 if (loongson_sysconf.nr_sensors > MAX_SENSORS) 153 loongson_sysconf.nr_sensors = 0; 154 if (loongson_sysconf.nr_sensors) 155 memcpy(loongson_sysconf.sensors, esys->sensors, 156 sizeof(struct sensor_device) * loongson_sysconf.nr_sensors); 157 pr_info("CpuClock = %u\n", cpu_clock_freq); 158 } 159