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 } 47