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
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