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/memblock.h>
   8 #include <asm/bootinfo.h>
   9 #include <asm/traps.h>
  10 #include <asm/smp-ops.h>
  11 #include <asm/cacheflush.h>
  12 #include <asm/fw/fw.h>
  13
  14 #include <loongson.h>
  15
  16 static void __init mips_nmi_setup(void)
  17 {
  18         void *base;
  19         extern char except_vec_nmi;
  20
  21         base = (void *)(CAC_BASE + 0x380);
  22         memcpy(base, &except_vec_nmi, 0x80);
  23         flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
  24 }
  25
  26 void __init prom_init(void)
  27 {
  28         fw_init_cmdline();
  29         prom_init_env();
  30
  31         /* init base address of io space */
  32         set_io_port_base((unsigned long)
  33                 ioremap(LOONGSON_PCIIO_BASE, LOONGSON_PCIIO_SIZE));
  34
  35         prom_init_numa_memory();
  36
  37         /* Hardcode to CPU UART 0 */
  38         setup_8250_early_printk_port(TO_UNCAC(LOONGSON_REG_BASE + 0x1e0), 0, 1024);
  39
  40         register_smp_ops(&loongson3_smp_ops);
  41         board_nmi_handler_setup = mips_nmi_setup;
  42 }
  43
  44 void __init prom_free_prom_memory(void)
  45 {
  46 }