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233 lines
7.9 KiB
233 lines
7.9 KiB
// 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: [email protected] or [email protected] |
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* |
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* Copyright 2003 ICT CAS |
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* Author: Michael Guo <[email protected]> |
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* |
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* Copyright (C) 2007 Lemote Inc. & Institute of Computing Technology |
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* Author: Fuxin Zhang, [email protected] |
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* |
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* Copyright (C) 2009 Lemote Inc. |
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* Author: Wu Zhangjin, [email protected] |
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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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