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