LXR linux/arch/mips/loongson64/init.c

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * Copyright (C) 2009 Lemote Inc.
   4 * Author: Wu Zhangjin, wuzhangjin@gmail.com
   5 */
   6
   7#include <linux/irqchip.h>
   8#include <linux/memblock.h>
   9#include <asm/bootinfo.h>
  10#include <asm/traps.h>
  11#include <asm/smp-ops.h>
  12#include <asm/cacheflush.h>
  13#include <asm/fw/fw.h>
  14
  15#include <loongson.h>
  16
  17static void __init mips_nmi_setup(void)
  18{
  19        void *base;
  20        extern char except_vec_nmi;
  21
  22        base = (void *)(CAC_BASE + 0x380);
  23        memcpy(base, &except_vec_nmi, 0x80);
  24        flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
  25}
  26
  27void __init prom_init(void)
  28{
  29        fw_init_cmdline();
  30        prom_init_env();
  31
  32        /* init base address of io space */
  33        set_io_port_base((unsigned long)
  34                ioremap(LOONGSON_PCIIO_BASE, LOONGSON_PCIIO_SIZE));
  35
  36        prom_init_numa_memory();
  37
  38        /* Hardcode to CPU UART 0 */
  39        setup_8250_early_printk_port(TO_UNCAC(LOONGSON_REG_BASE + 0x1e0), 0, 1024);
  40
  41        register_smp_ops(&loongson3_smp_ops);
  42        board_nmi_handler_setup = mips_nmi_setup;
  43}
  44
  45void __init prom_free_prom_memory(void)
  46{
  47}
  48
  49void __init arch_init_irq(void)
  50{
  51        irqchip_init();
  52}
  53