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
|
/**
* @file
*
* @ingroup raspberrypi_usart
*
* @brief Console Configuration.
*/
/*
* Copyright (c) 2015 Yang Qiao
* based on work by:
* Copyright (c) 2013 Alan Cudmore
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
*
* http://www.rtems.org/license/LICENSE
*
*/
#include <rtems/bspIo.h>
#include <rtems/console.h>
#include <rtems/sysinit.h>
#include <libchip/serial.h>
#include <libfdt.h>
#include <bspopts.h>
#include <bsp/usart.h>
#include <bsp/raspberrypi.h>
#include <bsp/fbcons.h>
#include <bsp.h>
#include <bsp/arm-pl011.h>
#include <bsp/console-termios.h>
#include <bsp/fdt.h>
#include <bsp/fatal.h>
#define UART0 "/dev/ttyS0"
#define FBCONS "/dev/fbcons"
arm_pl011_context pl011_context;
rpi_fb_context fb_context;
static void output_char_serial(char c)
{
arm_pl011_write_polled(&pl011_context.base, c);
}
void output_char_fb(char c)
{
fbcons_write_polled(&fb_context.base, c);
}
static void init_ctx_arm_pl011(
const void *fdt,
int node
)
{
arm_pl011_context *ctx = &pl011_context;
rtems_termios_device_context_initialize(&ctx->base, "UART");
ctx->regs = raspberrypi_get_reg_of_node(fdt, node);
}
static void register_fb( void )
{
if (fbcons_probe(&fb_context.base) == true) {
rtems_termios_device_install(
FBCONS,
&fbcons_fns,
NULL,
&fb_context.base);
}
}
static void console_select( void )
{
const char *opt;
opt = rpi_cmdline_get_arg("--console=");
if ( opt ) {
if ( strncmp( opt, "fbcons", sizeof( "fbcons" ) - 1 ) == 0 ) {
if ( rpi_video_is_initialized() > 0 ) {
BSP_output_char = output_char_fb;
link(FBCONS, CONSOLE_DEVICE_NAME);
return ;
}
}
}
BSP_output_char = output_char_serial;
link(UART0, CONSOLE_DEVICE_NAME);
}
static void uart_probe(void)
{
static bool initialized = false;
const void *fdt;
int node;
if ( initialized ) {
return ;
}
fdt = bsp_fdt_get();
node = fdt_node_offset_by_compatible(fdt, -1, "brcm,bcm2835-pl011");
init_ctx_arm_pl011(fdt, node);
initialized = true;
}
static void output_char(char c)
{
uart_probe();
output_char_serial(c);
}
rtems_status_code console_initialize(
rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg
)
{
rtems_termios_initialize();
uart_probe();
rtems_termios_device_install(
UART0,
&arm_pl011_fns,
NULL,
&pl011_context.base
);
register_fb();
console_select();
return RTEMS_SUCCESSFUL;
}
BSP_output_char_function_type BSP_output_char = output_char;
BSP_polling_getchar_function_type BSP_poll_char = NULL;
RTEMS_SYSINIT_ITEM(
uart_probe,
RTEMS_SYSINIT_BSP_START,
RTEMS_SYSINIT_ORDER_LAST
);
|
