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 /* Loongson CPU address windows config space base address */ 17 unsigned long __maybe_unused _loongson_addrwincfg_base; 18 19 static void __init mips_nmi_setup(void) 20 { 21 void *base; 22 23 base = (void *)(CAC_BASE + 0x380); 24 memcpy(base, except_vec_nmi, 0x80); 25 flush_icache_range((unsigned long)base, (unsigned long)base + 0x80); 26 } 27 28 void __init prom_init(void) 29 { 30 #ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG 31 _loongson_addrwincfg_base = (unsigned long) 32 ioremap(LOONGSON_ADDRWINCFG_BASE, LOONGSON_ADDRWINCFG_SIZE); 33 #endif 34 35 fw_init_cmdline(); 36 prom_init_machtype(); 37 prom_init_env(); 38 39 /* init base address of io space */ 40 set_io_port_base((unsigned long) 41 ioremap(LOONGSON_PCIIO_BASE, LOONGSON_PCIIO_SIZE)); 42 prom_init_memory(); 43 44 /*init the uart base address */ 45 prom_init_uart_base(); 46 board_nmi_handler_setup = mips_nmi_setup; 47 } 48