1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 *  init.c, Common initialization routines for NEC VR4100 series.
4 *
5 *  Copyright (C) 2003-2009  Yoichi Yuasa <yuasa@linux-mips.org>
6 */
7#include <linux/init.h>
8#include <linux/ioport.h>
9#include <linux/irq.h>
10#include <linux/string.h>
11
12#include <asm/bootinfo.h>
13#include <asm/time.h>
14#include <asm/vr41xx/irq.h>
15#include <asm/vr41xx/vr41xx.h>
16
17#define IO_MEM_RESOURCE_START	0UL
18#define IO_MEM_RESOURCE_END	0x1fffffffUL
19
20static void __init iomem_resource_init(void)
21{
22	iomem_resource.start = IO_MEM_RESOURCE_START;
23	iomem_resource.end = IO_MEM_RESOURCE_END;
24}
25
26void __init plat_time_init(void)
27{
28	unsigned long tclock;
29
30	vr41xx_calculate_clock_frequency();
31
32	tclock = vr41xx_get_tclock_frequency();
33	if (current_cpu_data.processor_id == PRID_VR4131_REV2_0 ||
34	    current_cpu_data.processor_id == PRID_VR4131_REV2_1)
35		mips_hpt_frequency = tclock / 2;
36	else
37		mips_hpt_frequency = tclock / 4;
38}
39
40void __init plat_mem_setup(void)
41{
42	iomem_resource_init();
43
44	vr41xx_siu_setup();
45}
46
47void __init prom_init(void)
48{
49	int argc, i;
50	char **argv;
51
52	argc = fw_arg0;
53	argv = (char **)fw_arg1;
54
55	for (i = 1; i < argc; i++) {
56		strlcat(arcs_cmdline, argv[i], COMMAND_LINE_SIZE);
57		if (i < (argc - 1))
58			strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE);
59	}
60}
61
62void __init prom_free_prom_memory(void)
63{
64}
65