aboutsummaryrefslogtreecommitdiff
path: root/arch/mips/lemote/lm2e/setup.c
blob: 0e4d1fa572b56c010e534be5dfb17a4f59e64665 (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
/*
 * BRIEF MODULE DESCRIPTION
 * setup.c - board dependent boot routines
 *
 * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
 * Author: Fuxin Zhang, zhangfx@lemote.com
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
 *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
 *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
 *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *  You should have received a copy of the  GNU General Public License along
 *  with this program; if not, write  to the Free Software Foundation, Inc.,
 *  675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */
#include <linux/bootmem.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/ioport.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/mc146818rtc.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/tty.h>
#include <linux/types.h>

#include <asm/bootinfo.h>
#include <asm/mc146818-time.h>
#include <asm/time.h>
#include <asm/wbflush.h>

#ifdef CONFIG_VT
#include <linux/console.h>
#include <linux/screen_info.h>
#endif

extern void mips_reboot_setup(void);

#ifdef CONFIG_64BIT
#define PTR_PAD(p) ((0xffffffff00000000)|((unsigned long long)(p)))
#else
#define PTR_PAD(p) (p)
#endif

unsigned long cpu_clock;
unsigned long bus_clock;
unsigned int memsize;
unsigned int highmemsize = 0;

void __init plat_timer_setup(struct irqaction *irq)
{
	setup_irq(MIPS_CPU_IRQ_BASE + 7, irq);
}

static void __init loongson2e_time_init(void)
{
	/* setup mips r4k timer */
	mips_hpt_frequency = cpu_clock / 2;
}

static unsigned long __init mips_rtc_get_time(void)
{
	return mc146818_get_cmos_time();
}

void (*__wbflush)(void);
EXPORT_SYMBOL(__wbflush);

static void wbflush_loongson2e(void)
{
	asm(".set\tpush\n\t"
	    ".set\tnoreorder\n\t"
	    ".set mips3\n\t"
	    "sync\n\t"
	    "nop\n\t"
	    ".set\tpop\n\t"
	    ".set mips0\n\t");
}

void __init plat_mem_setup(void)
{
	set_io_port_base(PTR_PAD(0xbfd00000));

	mips_reboot_setup();

	board_time_init = loongson2e_time_init;
	rtc_mips_get_time = mips_rtc_get_time;

	__wbflush = wbflush_loongson2e;

	add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM);
#ifdef CONFIG_64BIT
	if (highmemsize > 0) {
		add_memory_region(0x20000000, highmemsize << 20, BOOT_MEM_RAM);
	}
#endif

#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
	conswitchp = &vga_con;

	screen_info = (struct screen_info) {
		0, 25,		/* orig-x, orig-y */
		    0,		/* unused */
		    0,		/* orig-video-page */
		    0,		/* orig-video-mode */
		    80,		/* orig-video-cols */
		    0, 0, 0,	/* ega_ax, ega_bx, ega_cx */
		    25,		/* orig-video-lines */
		    VIDEO_TYPE_VGAC,	/* orig-video-isVGA */
		    16		/* orig-video-points */
	};
#elif defined(CONFIG_DUMMY_CONSOLE)
	conswitchp = &dummy_con;
#endif
#endif

}