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 #include <boot_param.h> 17 18 #define NODE_ID_OFFSET_ADDR ((void __iomem *)TO_UNCAC(0x1001041c)) 19 20 u32 node_id_offset; 21 22 static void __init mips_nmi_setup(void) 23 { 24 void *base; 25 extern char except_vec_nmi[]; 26 27 base = (void *)(CAC_BASE + 0x380); 28 memcpy(base, except_vec_nmi, 0x80); 29 flush_icache_range((unsigned long)base, (unsigned long)base + 0x80); 30 } 31 32 void ls7a_early_config(void) 33 { 34 node_id_offset = ((readl(NODE_ID_OFFSET_ADDR) >> 8) & 0x1f) + 36; 35 } 36 37 void rs780e_early_config(void) 38 { 39 node_id_offset = 37; 40 } 41 42 void __init prom_init(void) 43 { 44 fw_init_cmdline(); 45 prom_init_env(); 46 47 /* init base address of io space */ 48 set_io_port_base((unsigned long) 49 ioremap(LOONGSON_PCIIO_BASE, LOONGSON_PCIIO_SIZE)); 50 51 loongson_sysconf.early_config(); 52 53 prom_init_numa_memory(); 54 55 /* Hardcode to CPU UART 0 */ 56 setup_8250_early_printk_port(TO_UNCAC(LOONGSON_REG_BASE + 0x1e0), 0, 1024); 57 58 register_smp_ops(&loongson3_smp_ops); 59 board_nmi_handler_setup = mips_nmi_setup; 60 } 61 62 void __init prom_free_prom_memory(void) 63 { 64 } 65 66 void __init arch_init_irq(void) 67 { 68 irqchip_init(); 69 } 70