summaryrefslogtreecommitdiffstats
path: root/arch/m68k/kernel/setup_no.c
blob: f66f4b1d062ed636abd3e4ea380c162132125bac (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
// SPDX-License-Identifier: GPL-2.0
/*
 *  linux/arch/m68knommu/kernel/setup.c
 *
 *  Copyright (C) 1999-2007  Greg Ungerer (gerg@snapgear.com)
 *  Copyright (C) 1998,1999  D. Jeff Dionne <jeff@uClinux.org>
 *  Copyleft  ()) 2000       James D. Schettine {james@telos-systems.com}
 *  Copyright (C) 1998       Kenneth Albanowski <kjahds@kjahds.com>
 *  Copyright (C) 1995       Hamish Macdonald
 *  Copyright (C) 2000       Lineo Inc. (www.lineo.com)
 *  Copyright (C) 2001 	     Lineo, Inc. <www.lineo.com>
 *
 *  68VZ328 Fixes/support    Evan Stawnyczy <e@lineo.ca>
 */

/*
 * This file handles the architecture-dependent parts of system setup
 */

#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/fb.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/console.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/memblock.h>
#include <linux/seq_file.h>
#include <linux/init.h>
#include <linux/initrd.h>
#include <linux/root_dev.h>
#include <linux/rtc.h>

#include <asm/setup.h>
#include <asm/bootinfo.h>
#include <asm/irq.h>
#include <asm/machdep.h>
#include <asm/sections.h>

unsigned long memory_start;
unsigned long memory_end;

EXPORT_SYMBOL(memory_start);
EXPORT_SYMBOL(memory_end);

char __initdata command_line[COMMAND_LINE_SIZE];

/* machine dependent timer functions */
void (*mach_sched_init)(irq_handler_t handler) __initdata = NULL;
int (*mach_hwclk) (int, struct rtc_time*);

/* machine dependent reboot functions */
void (*mach_reset)(void);
void (*mach_halt)(void);
void (*mach_power_off)(void);

#ifdef CONFIG_M68000
#if defined(CONFIG_M68328)
#define CPU_NAME	"MC68328"
#elif defined(CONFIG_M68EZ328)
#define CPU_NAME	"MC68EZ328"
#elif defined(CONFIG_M68VZ328)
#define CPU_NAME	"MC68VZ328"
#else
#define CPU_NAME	"MC68000"
#endif
#endif /* CONFIG_M68000 */
#ifndef CPU_NAME
#define	CPU_NAME	"UNKNOWN"
#endif

/*
 * Different cores have different instruction execution timings.
 * The old/traditional 68000 cores are basically all the same, at 16.
 * The ColdFire cores vary a little, their values are defined in their
 * headers. We default to the standard 68000 value here.
 */
#ifndef CPU_INSTR_PER_JIFFY
#define	CPU_INSTR_PER_JIFFY	16
#endif

void __init setup_arch(char **cmdline_p)
{
	memory_start = PAGE_ALIGN(_ramstart);
	memory_end = _ramend;

	init_mm.start_code = (unsigned long) &_stext;
	init_mm.end_code = (unsigned long) &_etext;
	init_mm.end_data = (unsigned long) &_edata;
	init_mm.brk = (unsigned long) 0;

	config_BSP(&command_line[0], sizeof(command_line));

#if defined(CONFIG_BOOTPARAM)
	strncpy(&command_line[0], CONFIG_BOOTPARAM_STRING, sizeof(command_line));
	command_line[sizeof(command_line) - 1] = 0;
#endif /* CONFIG_BOOTPARAM */

	process_uboot_commandline(&command_line[0], sizeof(command_line));

	pr_info("uClinux with CPU " CPU_NAME "\n");

#ifdef CONFIG_UCDIMM
	pr_info("uCdimm by Lineo, Inc. <www.lineo.com>\n");
#endif
#ifdef CONFIG_M68VZ328
	pr_info("M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n");
#endif
#ifdef CONFIG_COLDFIRE
	pr_info("COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n");
#ifdef CONFIG_M5307
	pr_info("Modified for M5307 by Dave Miller, dmiller@intellistor.com\n");
#endif
#ifdef CONFIG_ELITE
	pr_info("Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n");
#endif
#endif
	pr_info("Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n");

#if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 )
	pr_info("TRG SuperPilot FLASH card support <info@trgnet.com>\n");
#endif
#if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 )
	pr_info("PalmV support by Lineo Inc. <jeff@uclinux.com>\n");
#endif
#ifdef CONFIG_DRAGEN2
	pr_info("DragonEngine II board support by Georges Menie\n");
#endif
#ifdef CONFIG_M5235EVB
	pr_info("Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)\n");
#endif

	pr_debug("KERNEL -> TEXT=0x%p-0x%p DATA=0x%p-0x%p BSS=0x%p-0x%p\n",
		 _stext, _etext, _sdata, _edata, __bss_start, __bss_stop);
	pr_debug("MEMORY -> ROMFS=0x%p-0x%06lx MEM=0x%06lx-0x%06lx\n ",
		 __bss_stop, memory_start, memory_start, memory_end);

	memblock_add(_rambase, memory_end - _rambase);
	memblock_reserve(_rambase, memory_start - _rambase);

	/* Keep a copy of command line */
	*cmdline_p = &command_line[0];
	memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
	boot_command_line[COMMAND_LINE_SIZE-1] = 0;

	/*
	 * Give all the memory to the bootmap allocator, tell it to put the
	 * boot mem_map at the start of memory.
	 */
	min_low_pfn = PFN_DOWN(memory_start);
	max_pfn = max_low_pfn = PFN_DOWN(memory_end);

#if defined(CONFIG_UBOOT) && defined(CONFIG_BLK_DEV_INITRD)
	if ((initrd_start > 0) && (initrd_start < initrd_end) &&
			(initrd_end < memory_end))
		memblock_reserve(initrd_start, initrd_end - initrd_start);
#endif /* if defined(CONFIG_BLK_DEV_INITRD) */

	/*
	 * Get kmalloc into gear.
	 */
	paging_init();
}

/*
 *	Get CPU information for use by the procfs.
 */
static int show_cpuinfo(struct seq_file *m, void *v)
{
	char *cpu, *mmu, *fpu;
	u_long clockfreq;

	cpu = CPU_NAME;
	mmu = "none";
	fpu = "none";
	clockfreq = (loops_per_jiffy * HZ) * CPU_INSTR_PER_JIFFY;

	seq_printf(m, "CPU:\t\t%s\n"
		      "MMU:\t\t%s\n"
		      "FPU:\t\t%s\n"
		      "Clocking:\t%lu.%1luMHz\n"
		      "BogoMips:\t%lu.%02lu\n"
		      "Calibration:\t%lu loops\n",
		      cpu, mmu, fpu,
		      clockfreq / 1000000,
		      (clockfreq / 100000) % 10,
		      (loops_per_jiffy * HZ) / 500000,
		      ((loops_per_jiffy * HZ) / 5000) % 100,
		      (loops_per_jiffy * HZ));

	return 0;
}

static void *c_start(struct seq_file *m, loff_t *pos)
{
	return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL;
}

static void *c_next(struct seq_file *m, void *v, loff_t *pos)
{
	++*pos;
	return c_start(m, pos);
}

static void c_stop(struct seq_file *m, void *v)
{
}

const struct seq_operations cpuinfo_op = {
	.start	= c_start,
	.next	= c_next,
	.stop	= c_stop,
	.show	= show_cpuinfo,
};