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
|
/* $NetBSD: lcd.c,v 1.3 2018/09/04 15:08:30 riastradh Exp $ */
/*-
* Copyright (c) 2008 Izumi Tsutsui. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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.
*/
#include <lib/libsa/stand.h>
#include <lib/libkern/libkern.h>
#include <dev/ic/hd44780reg.h>
#include <machine/cpu.h>
#include "boot.h"
#define IREG 0x00
#define DREG 0x10
#if 0
#define CSR_READ(base, reg) \
(((*(volatile uint32_t *)((base) + (reg))) >> 24), delay(10))
#endif
#define CSR_WRITE(base, reg, val) \
do { \
*(volatile uint32_t *)((base) + (reg)) = ((val) << 24); \
delay(10); \
} while (/* CONSTCOND */ 0)
#define NCOLS 16
struct lcd_message {
char row1[NCOLS];
char row2[NCOLS];
};
static uint32_t lcd_base;
static const struct lcd_message banner_message = {
"NetBSD/cobalt ",
"Bootloader "
};
static const struct lcd_message failed_message = {
"Boot failed! ",
"Rebooting... "
};
static struct lcd_message loadfile_message = {
"Loading: ",
" "
};
static void lcd_puts(const struct lcd_message *);
void
lcd_init(void)
{
lcd_base = MIPS_PHYS_TO_KSEG1(LCD_BASE);
}
void
lcd_banner(void)
{
lcd_puts(&banner_message);
}
void
lcd_loadfile(const char *file)
{
memcpy(loadfile_message.row2, file, uimin(NCOLS, strlen(file)));
lcd_puts(&loadfile_message);
}
void
lcd_failed(void)
{
lcd_puts(&failed_message);
}
static void
lcd_puts(const struct lcd_message *message)
{
int i;
for (i = 0; i < NCOLS; i++) {
CSR_WRITE(lcd_base, IREG, cmd_ddramset(HD_ROW1_ADDR + i));
CSR_WRITE(lcd_base, DREG, message->row1[i]);
}
for (i = 0; i < NCOLS; i++) {
CSR_WRITE(lcd_base, IREG, cmd_ddramset(HD_ROW2_ADDR + i));
CSR_WRITE(lcd_base, DREG, message->row2[i]);
}
}
|