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6c1bfbd9df
Add /sys/firmware/lefi/boardinfo to get mainboard and BIOS info easily on the Loongson platform, this is useful to point out the current used mainboard type and BIOS version when there exists problems related with hardware or firmware. The related structures are already defined in the interface specification about firmware and kernel which are common requirement and specific for Loongson64, so only add a new boardinfo.c file in arch/mips/loongson64. E.g. with this patch: [loongson@linux ~]$ cat /sys/firmware/lefi/boardinfo Board Info Manufacturer : LEMOTE Board Name : LEMOTE-LS3A4000-7A1000-1w-V01-pc Family : LOONGSON3 BIOS Info Vendor : Kunlun Version : Kunlun-A1901-V4.1.3-20200414093938 ROM Size : 4 KB Release Date : 2020-04-14 By the way, using dmidecode command can get the similar info if there exists SMBIOS in firmware, but the fact is that there is no SMBIOS on some machines, we can see nothing when execute dmidecode, like this: [root@linux loongson]# dmidecode # dmidecode 2.12 # No SMBIOS nor DMI entry point found, sorry. Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
234 lines
7.9 KiB
C
234 lines
7.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Based on Ocelot Linux port, which is
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* Copyright 2001 MontaVista Software Inc.
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* Author: jsun@mvista.com or jsun@junsun.net
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*
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* Copyright 2003 ICT CAS
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* Author: Michael Guo <guoyi@ict.ac.cn>
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*
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* Copyright (C) 2007 Lemote Inc. & Institute of Computing Technology
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* Author: Fuxin Zhang, zhangfx@lemote.com
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*
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* Copyright (C) 2009 Lemote Inc.
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* Author: Wu Zhangjin, wuzhangjin@gmail.com
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*/
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#include <linux/export.h>
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#include <linux/pci_ids.h>
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#include <asm/bootinfo.h>
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#include <loongson.h>
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#include <boot_param.h>
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#include <builtin_dtbs.h>
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#include <workarounds.h>
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#define HOST_BRIDGE_CONFIG_ADDR ((void __iomem *)TO_UNCAC(0x1a000000))
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u32 cpu_clock_freq;
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EXPORT_SYMBOL(cpu_clock_freq);
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struct efi_memory_map_loongson *loongson_memmap;
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struct loongson_system_configuration loongson_sysconf;
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struct board_devices *eboard;
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struct interface_info *einter;
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struct loongson_special_attribute *especial;
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u64 loongson_chipcfg[MAX_PACKAGES] = {0xffffffffbfc00180};
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u64 loongson_chiptemp[MAX_PACKAGES];
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u64 loongson_freqctrl[MAX_PACKAGES];
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unsigned long long smp_group[4];
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const char *get_system_type(void)
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{
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return "Generic Loongson64 System";
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}
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void __init prom_init_env(void)
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{
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struct boot_params *boot_p;
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struct loongson_params *loongson_p;
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struct system_loongson *esys;
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struct efi_cpuinfo_loongson *ecpu;
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struct irq_source_routing_table *eirq_source;
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u32 id;
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u16 vendor, device;
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/* firmware arguments are initialized in head.S */
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boot_p = (struct boot_params *)fw_arg2;
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loongson_p = &(boot_p->efi.smbios.lp);
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esys = (struct system_loongson *)
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((u64)loongson_p + loongson_p->system_offset);
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ecpu = (struct efi_cpuinfo_loongson *)
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((u64)loongson_p + loongson_p->cpu_offset);
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eboard = (struct board_devices *)
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((u64)loongson_p + loongson_p->boarddev_table_offset);
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einter = (struct interface_info *)
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((u64)loongson_p + loongson_p->interface_offset);
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especial = (struct loongson_special_attribute *)
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((u64)loongson_p + loongson_p->special_offset);
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eirq_source = (struct irq_source_routing_table *)
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((u64)loongson_p + loongson_p->irq_offset);
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loongson_memmap = (struct efi_memory_map_loongson *)
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((u64)loongson_p + loongson_p->memory_offset);
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cpu_clock_freq = ecpu->cpu_clock_freq;
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loongson_sysconf.cputype = ecpu->cputype;
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switch (ecpu->cputype) {
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case Legacy_3A:
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case Loongson_3A:
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loongson_sysconf.cores_per_node = 4;
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loongson_sysconf.cores_per_package = 4;
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smp_group[0] = 0x900000003ff01000;
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smp_group[1] = 0x900010003ff01000;
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smp_group[2] = 0x900020003ff01000;
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smp_group[3] = 0x900030003ff01000;
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loongson_chipcfg[0] = 0x900000001fe00180;
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loongson_chipcfg[1] = 0x900010001fe00180;
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loongson_chipcfg[2] = 0x900020001fe00180;
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loongson_chipcfg[3] = 0x900030001fe00180;
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loongson_chiptemp[0] = 0x900000001fe0019c;
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loongson_chiptemp[1] = 0x900010001fe0019c;
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loongson_chiptemp[2] = 0x900020001fe0019c;
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loongson_chiptemp[3] = 0x900030001fe0019c;
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loongson_freqctrl[0] = 0x900000001fe001d0;
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loongson_freqctrl[1] = 0x900010001fe001d0;
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loongson_freqctrl[2] = 0x900020001fe001d0;
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loongson_freqctrl[3] = 0x900030001fe001d0;
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loongson_sysconf.ht_control_base = 0x90000EFDFB000000;
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loongson_sysconf.workarounds = WORKAROUND_CPUFREQ;
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break;
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case Legacy_3B:
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case Loongson_3B:
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loongson_sysconf.cores_per_node = 4; /* One chip has 2 nodes */
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loongson_sysconf.cores_per_package = 8;
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smp_group[0] = 0x900000003ff01000;
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smp_group[1] = 0x900010003ff05000;
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smp_group[2] = 0x900020003ff09000;
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smp_group[3] = 0x900030003ff0d000;
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loongson_chipcfg[0] = 0x900000001fe00180;
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loongson_chipcfg[1] = 0x900020001fe00180;
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loongson_chipcfg[2] = 0x900040001fe00180;
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loongson_chipcfg[3] = 0x900060001fe00180;
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loongson_chiptemp[0] = 0x900000001fe0019c;
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loongson_chiptemp[1] = 0x900020001fe0019c;
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loongson_chiptemp[2] = 0x900040001fe0019c;
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loongson_chiptemp[3] = 0x900060001fe0019c;
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loongson_freqctrl[0] = 0x900000001fe001d0;
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loongson_freqctrl[1] = 0x900020001fe001d0;
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loongson_freqctrl[2] = 0x900040001fe001d0;
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loongson_freqctrl[3] = 0x900060001fe001d0;
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loongson_sysconf.ht_control_base = 0x90001EFDFB000000;
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loongson_sysconf.workarounds = WORKAROUND_CPUHOTPLUG;
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break;
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default:
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loongson_sysconf.cores_per_node = 1;
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loongson_sysconf.cores_per_package = 1;
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loongson_chipcfg[0] = 0x900000001fe00180;
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}
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loongson_sysconf.nr_cpus = ecpu->nr_cpus;
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loongson_sysconf.boot_cpu_id = ecpu->cpu_startup_core_id;
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loongson_sysconf.reserved_cpus_mask = ecpu->reserved_cores_mask;
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if (ecpu->nr_cpus > NR_CPUS || ecpu->nr_cpus == 0)
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loongson_sysconf.nr_cpus = NR_CPUS;
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loongson_sysconf.nr_nodes = (loongson_sysconf.nr_cpus +
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loongson_sysconf.cores_per_node - 1) /
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loongson_sysconf.cores_per_node;
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loongson_sysconf.pci_mem_start_addr = eirq_source->pci_mem_start_addr;
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loongson_sysconf.pci_mem_end_addr = eirq_source->pci_mem_end_addr;
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loongson_sysconf.pci_io_base = eirq_source->pci_io_start_addr;
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loongson_sysconf.dma_mask_bits = eirq_source->dma_mask_bits;
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if (loongson_sysconf.dma_mask_bits < 32 ||
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loongson_sysconf.dma_mask_bits > 64)
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loongson_sysconf.dma_mask_bits = 32;
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loongson_sysconf.restart_addr = boot_p->reset_system.ResetWarm;
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loongson_sysconf.poweroff_addr = boot_p->reset_system.Shutdown;
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loongson_sysconf.suspend_addr = boot_p->reset_system.DoSuspend;
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loongson_sysconf.vgabios_addr = boot_p->efi.smbios.vga_bios;
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pr_debug("Shutdown Addr: %llx, Restart Addr: %llx, VBIOS Addr: %llx\n",
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loongson_sysconf.poweroff_addr, loongson_sysconf.restart_addr,
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loongson_sysconf.vgabios_addr);
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memset(loongson_sysconf.ecname, 0, 32);
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if (esys->has_ec)
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memcpy(loongson_sysconf.ecname, esys->ec_name, 32);
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loongson_sysconf.workarounds |= esys->workarounds;
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loongson_sysconf.nr_uarts = esys->nr_uarts;
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if (esys->nr_uarts < 1 || esys->nr_uarts > MAX_UARTS)
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loongson_sysconf.nr_uarts = 1;
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memcpy(loongson_sysconf.uarts, esys->uarts,
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sizeof(struct uart_device) * loongson_sysconf.nr_uarts);
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loongson_sysconf.nr_sensors = esys->nr_sensors;
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if (loongson_sysconf.nr_sensors > MAX_SENSORS)
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loongson_sysconf.nr_sensors = 0;
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if (loongson_sysconf.nr_sensors)
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memcpy(loongson_sysconf.sensors, esys->sensors,
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sizeof(struct sensor_device) * loongson_sysconf.nr_sensors);
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pr_info("CpuClock = %u\n", cpu_clock_freq);
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/* Read the ID of PCI host bridge to detect bridge type */
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id = readl(HOST_BRIDGE_CONFIG_ADDR);
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vendor = id & 0xffff;
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device = (id >> 16) & 0xffff;
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switch (vendor) {
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case PCI_VENDOR_ID_LOONGSON:
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pr_info("The bridge chip is LS7A\n");
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loongson_sysconf.bridgetype = LS7A;
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loongson_sysconf.early_config = ls7a_early_config;
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break;
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case PCI_VENDOR_ID_AMD:
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case PCI_VENDOR_ID_ATI:
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pr_info("The bridge chip is RS780E or SR5690\n");
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loongson_sysconf.bridgetype = RS780E;
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loongson_sysconf.early_config = rs780e_early_config;
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break;
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default:
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pr_info("The bridge chip is VIRTUAL\n");
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loongson_sysconf.bridgetype = VIRTUAL;
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loongson_sysconf.early_config = virtual_early_config;
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loongson_fdt_blob = __dtb_loongson64v_4core_virtio_begin;
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break;
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}
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if ((read_c0_prid() & PRID_IMP_MASK) == PRID_IMP_LOONGSON_64C) {
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switch (read_c0_prid() & PRID_REV_MASK) {
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case PRID_REV_LOONGSON3A_R1:
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case PRID_REV_LOONGSON3A_R2_0:
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case PRID_REV_LOONGSON3A_R2_1:
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case PRID_REV_LOONGSON3A_R3_0:
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case PRID_REV_LOONGSON3A_R3_1:
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switch (loongson_sysconf.bridgetype) {
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case LS7A:
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loongson_fdt_blob = __dtb_loongson64c_4core_ls7a_begin;
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break;
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case RS780E:
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loongson_fdt_blob = __dtb_loongson64c_4core_rs780e_begin;
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break;
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default:
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break;
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}
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break;
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case PRID_REV_LOONGSON3B_R1:
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case PRID_REV_LOONGSON3B_R2:
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if (loongson_sysconf.bridgetype == RS780E)
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loongson_fdt_blob = __dtb_loongson64c_8core_rs780e_begin;
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break;
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default:
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break;
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}
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} else if ((read_c0_prid() & PRID_IMP_MASK) == PRID_IMP_LOONGSON_64G) {
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if (loongson_sysconf.bridgetype == LS7A)
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loongson_fdt_blob = __dtb_loongson64g_4core_ls7a_begin;
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}
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if (!loongson_fdt_blob)
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pr_err("Failed to determine built-in Loongson64 dtb\n");
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}
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