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 extern char except_vec_nmi[]; 23 24 base = (void *)(CAC_BASE + 0x380); 25 memcpy(base, except_vec_nmi, 0x80); 26 flush_icache_range((unsigned long)base, (unsigned long)base + 0x80); 27 } 28 29 void __init prom_init(void) 30 { 31 #ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG 32 _loongson_addrwincfg_base = (unsigned long) 33 ioremap(LOONGSON_ADDRWINCFG_BASE, LOONGSON_ADDRWINCFG_SIZE); 34 #endif 35 36 fw_init_cmdline(); 37 prom_init_machtype(); 38 prom_init_env(); 39 40 /* init base address of io space */ 41 set_io_port_base((unsigned long) 42 ioremap(LOONGSON_PCIIO_BASE, LOONGSON_PCIIO_SIZE)); 43 prom_init_memory(); 44 45 /*init the uart base address */ 46 prom_init_uart_base(); 47 board_nmi_handler_setup = mips_nmi_setup; 48 } 49 50 void __init prom_free_prom_memory(void) 51 { 52 } 53