arch/mips/loongson64/env.c

   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 }