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193 lines
4.4 KiB
193 lines
4.4 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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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/irqchip.h> |
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#include <linux/logic_pio.h> |
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#include <linux/memblock.h> |
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#include <linux/of.h> |
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#include <linux/of_address.h> |
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#include <asm/bootinfo.h> |
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#include <asm/traps.h> |
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#include <asm/smp-ops.h> |
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#include <asm/cacheflush.h> |
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#include <asm/fw/fw.h> |
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#include <loongson.h> |
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#include <boot_param.h> |
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#define NODE_ID_OFFSET_ADDR ((void __iomem *)TO_UNCAC(0x1001041c)) |
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u32 node_id_offset; |
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static void __init mips_nmi_setup(void) |
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{ |
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void *base; |
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base = (void *)(CAC_BASE + 0x380); |
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memcpy(base, except_vec_nmi, 0x80); |
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flush_icache_range((unsigned long)base, (unsigned long)base + 0x80); |
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} |
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void ls7a_early_config(void) |
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{ |
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node_id_offset = ((readl(NODE_ID_OFFSET_ADDR) >> 8) & 0x1f) + 36; |
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} |
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void rs780e_early_config(void) |
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{ |
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node_id_offset = 37; |
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} |
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void virtual_early_config(void) |
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{ |
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node_id_offset = 44; |
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} |
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void __init szmem(unsigned int node) |
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{ |
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u32 i, mem_type; |
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static unsigned long num_physpages; |
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u64 node_id, node_psize, start_pfn, end_pfn, mem_start, mem_size; |
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/* Parse memory information and activate */ |
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for (i = 0; i < loongson_memmap->nr_map; i++) { |
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node_id = loongson_memmap->map[i].node_id; |
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if (node_id != node) |
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continue; |
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mem_type = loongson_memmap->map[i].mem_type; |
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mem_size = loongson_memmap->map[i].mem_size; |
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mem_start = loongson_memmap->map[i].mem_start; |
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switch (mem_type) { |
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case SYSTEM_RAM_LOW: |
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case SYSTEM_RAM_HIGH: |
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start_pfn = ((node_id << 44) + mem_start) >> PAGE_SHIFT; |
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node_psize = (mem_size << 20) >> PAGE_SHIFT; |
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end_pfn = start_pfn + node_psize; |
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num_physpages += node_psize; |
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pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx MB\n", |
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(u32)node_id, mem_type, mem_start, mem_size); |
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pr_info(" start_pfn:0x%llx, end_pfn:0x%llx, num_physpages:0x%lx\n", |
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start_pfn, end_pfn, num_physpages); |
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memblock_add_node(PFN_PHYS(start_pfn), PFN_PHYS(node_psize), node); |
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break; |
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case SYSTEM_RAM_RESERVED: |
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pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx MB\n", |
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(u32)node_id, mem_type, mem_start, mem_size); |
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memblock_reserve(((node_id << 44) + mem_start), mem_size << 20); |
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break; |
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} |
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} |
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} |
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#ifndef CONFIG_NUMA |
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static void __init prom_init_memory(void) |
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{ |
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szmem(0); |
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} |
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#endif |
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void __init prom_init(void) |
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{ |
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fw_init_cmdline(); |
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prom_init_env(); |
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/* init base address of io space */ |
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set_io_port_base(PCI_IOBASE); |
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loongson_sysconf.early_config(); |
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#ifdef CONFIG_NUMA |
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prom_init_numa_memory(); |
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#else |
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prom_init_memory(); |
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#endif |
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/* Hardcode to CPU UART 0 */ |
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setup_8250_early_printk_port(TO_UNCAC(LOONGSON_REG_BASE + 0x1e0), 0, 1024); |
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register_smp_ops(&loongson3_smp_ops); |
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board_nmi_handler_setup = mips_nmi_setup; |
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} |
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static int __init add_legacy_isa_io(struct fwnode_handle *fwnode, resource_size_t hw_start, |
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resource_size_t size) |
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{ |
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int ret = 0; |
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struct logic_pio_hwaddr *range; |
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unsigned long vaddr; |
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range = kzalloc(sizeof(*range), GFP_ATOMIC); |
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if (!range) |
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return -ENOMEM; |
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range->fwnode = fwnode; |
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range->size = size = round_up(size, PAGE_SIZE); |
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range->hw_start = hw_start; |
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range->flags = LOGIC_PIO_CPU_MMIO; |
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ret = logic_pio_register_range(range); |
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if (ret) { |
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kfree(range); |
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return ret; |
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} |
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/* Legacy ISA must placed at the start of PCI_IOBASE */ |
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if (range->io_start != 0) { |
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logic_pio_unregister_range(range); |
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kfree(range); |
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return -EINVAL; |
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} |
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vaddr = PCI_IOBASE + range->io_start; |
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ioremap_page_range(vaddr, vaddr + size, hw_start, pgprot_device(PAGE_KERNEL)); |
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return 0; |
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} |
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static __init void reserve_pio_range(void) |
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{ |
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struct device_node *np; |
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for_each_node_by_name(np, "isa") { |
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struct of_range range; |
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struct of_range_parser parser; |
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pr_info("ISA Bridge: %pOF\n", np); |
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if (of_range_parser_init(&parser, np)) { |
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pr_info("Failed to parse resources.\n"); |
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break; |
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} |
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for_each_of_range(&parser, &range) { |
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switch (range.flags & IORESOURCE_TYPE_BITS) { |
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case IORESOURCE_IO: |
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pr_info(" IO 0x%016llx..0x%016llx -> 0x%016llx\n", |
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range.cpu_addr, |
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range.cpu_addr + range.size - 1, |
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range.bus_addr); |
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if (add_legacy_isa_io(&np->fwnode, range.cpu_addr, range.size)) |
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pr_warn("Failed to reserve legacy IO in Logic PIO\n"); |
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break; |
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case IORESOURCE_MEM: |
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pr_info(" MEM 0x%016llx..0x%016llx -> 0x%016llx\n", |
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range.cpu_addr, |
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range.cpu_addr + range.size - 1, |
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range.bus_addr); |
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break; |
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} |
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} |
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} |
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} |
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void __init arch_init_irq(void) |
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{ |
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reserve_pio_range(); |
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irqchip_init(); |
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}
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