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
|
/*
* include/asm-v850/rte_cb.c -- Midas lab RTE-CB series of evaluation boards
*
* Copyright (C) 2001,02,03 NEC Electronics Corporation
* Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org>
*
* This file is subject to the terms and conditions of the GNU General
* Public License. See the file COPYING in the main directory of this
* archive for more details.
*
* Written by Miles Bader <miles@gnu.org>
*/
#include <linux/config.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/fs.h>
#include <linux/module.h>
#include <asm/machdep.h>
#include <asm/v850e_uart.h>
#include "mach.h"
static void led_tick (void);
/* LED access routines. */
extern unsigned read_leds (int pos, char *buf, int len);
extern unsigned write_leds (int pos, const char *buf, int len);
#ifdef CONFIG_RTE_CB_MULTI
extern void multi_init (void);
#endif
void __init rte_cb_early_init (void)
{
v850e_intc_disable_irqs ();
#ifdef CONFIG_RTE_CB_MULTI
multi_init ();
#endif
}
void __init mach_setup (char **cmdline)
{
#ifdef CONFIG_RTE_MB_A_PCI
/* Probe for Mother-A, and print a message if we find it. */
*(volatile unsigned long *)MB_A_SRAM_ADDR = 0xDEADBEEF;
if (*(volatile unsigned long *)MB_A_SRAM_ADDR == 0xDEADBEEF) {
*(volatile unsigned long *)MB_A_SRAM_ADDR = 0x12345678;
if (*(volatile unsigned long *)MB_A_SRAM_ADDR == 0x12345678)
printk (KERN_INFO
" NEC SolutionGear/Midas lab"
" RTE-MOTHER-A motherboard\n");
}
#endif /* CONFIG_RTE_MB_A_PCI */
mach_tick = led_tick;
}
void machine_restart (char *__unused)
{
#ifdef CONFIG_RESET_GUARD
disable_reset_guard ();
#endif
asm ("jmp r0"); /* Jump to the reset vector. */
}
EXPORT_SYMBOL(machine_restart);
/* This says `HALt.' in LEDese. */
static unsigned char halt_leds_msg[] = { 0x76, 0x77, 0x38, 0xF8 };
void machine_halt (void)
{
#ifdef CONFIG_RESET_GUARD
disable_reset_guard ();
#endif
/* Ignore all interrupts. */
local_irq_disable ();
/* Write a little message. */
write_leds (0, halt_leds_msg, sizeof halt_leds_msg);
/* Really halt. */
for (;;)
asm ("halt; nop; nop; nop; nop; nop");
}
EXPORT_SYMBOL(machine_halt);
void machine_power_off (void)
{
machine_halt ();
}
EXPORT_SYMBOL(machine_power_off);
/* Animated LED display for timer tick. */
#define TICK_UPD_FREQ 6
static int tick_frames[][10] = {
{ 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, -1 },
{ 0x63, 0x5c, -1 },
{ 0x5c, 0x00, -1 },
{ 0x63, 0x00, -1 },
{ -1 }
};
static void led_tick ()
{
static unsigned counter = 0;
if (++counter == (HZ / TICK_UPD_FREQ)) {
/* Which frame we're currently displaying for each digit. */
static unsigned frame_nums[LED_NUM_DIGITS] = { 0 };
/* Display image. */
static unsigned char image[LED_NUM_DIGITS] = { 0 };
unsigned char prev_image[LED_NUM_DIGITS];
int write_to_leds = 1; /* true if we should actually display */
int digit;
/* We check to see if the physical LEDs contains what we last
wrote to them; if not, we suppress display (this is so that
users can write to the LEDs, and not have their output
overwritten). As a special case, we start writing again if
all the LEDs are blank, or our display image is all zeros
(indicating that this is the initial update, when the actual
LEDs might contain random data). */
read_leds (0, prev_image, LED_NUM_DIGITS);
for (digit = 0; digit < LED_NUM_DIGITS; digit++)
if (image[digit] != prev_image[digit]
&& image[digit] && prev_image[digit])
{
write_to_leds = 0;
break;
}
/* Update display image. */
for (digit = 0;
digit < LED_NUM_DIGITS && tick_frames[digit][0] >= 0;
digit++)
{
int frame = tick_frames[digit][frame_nums[digit]];
if (frame < 0) {
image[digit] = tick_frames[digit][0];
frame_nums[digit] = 1;
} else {
image[digit] = frame;
frame_nums[digit]++;
break;
}
}
if (write_to_leds)
/* Write the display image to the physical LEDs. */
write_leds (0, image, LED_NUM_DIGITS);
counter = 0;
}
}
/* Mother-A interrupts. */
#ifdef CONFIG_RTE_GBUS_INT
#define L GBUS_INT_PRIORITY_LOW
#define M GBUS_INT_PRIORITY_MEDIUM
#define H GBUS_INT_PRIORITY_HIGH
static struct gbus_int_irq_init gbus_irq_inits[] = {
#ifdef CONFIG_RTE_MB_A_PCI
{ "MB_A_LAN", IRQ_MB_A_LAN, 1, 1, L },
{ "MB_A_PCI1", IRQ_MB_A_PCI1(0), IRQ_MB_A_PCI1_NUM, 1, L },
{ "MB_A_PCI2", IRQ_MB_A_PCI2(0), IRQ_MB_A_PCI2_NUM, 1, L },
{ "MB_A_EXT", IRQ_MB_A_EXT(0), IRQ_MB_A_EXT_NUM, 1, L },
{ "MB_A_USB_OC",IRQ_MB_A_USB_OC(0), IRQ_MB_A_USB_OC_NUM, 1, L },
{ "MB_A_PCMCIA_OC",IRQ_MB_A_PCMCIA_OC, 1, 1, L },
#endif
{ 0 }
};
#define NUM_GBUS_IRQ_INITS \
((sizeof gbus_irq_inits / sizeof gbus_irq_inits[0]) - 1)
static struct hw_interrupt_type gbus_hw_itypes[NUM_GBUS_IRQ_INITS];
#endif /* CONFIG_RTE_GBUS_INT */
void __init rte_cb_init_irqs (void)
{
#ifdef CONFIG_RTE_GBUS_INT
gbus_int_init_irqs ();
gbus_int_init_irq_types (gbus_irq_inits, gbus_hw_itypes);
#endif /* CONFIG_RTE_GBUS_INT */
}
|
