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6
7#include <common.h>
8#include <clock_legacy.h>
9#include <ns16550.h>
10#include <serial.h>
11#include <linux/compiler.h>
12
13#ifndef CONFIG_NS16550_MIN_FUNCTIONS
14
15DECLARE_GLOBAL_DATA_PTR;
16
17#if !defined(CONFIG_CONS_INDEX)
18#elif (CONFIG_CONS_INDEX < 1) || (CONFIG_CONS_INDEX > 6)
19#error "Invalid console index value."
20#endif
21
22#if CONFIG_CONS_INDEX == 1 && !defined(CONFIG_SYS_NS16550_COM1)
23#error "Console port 1 defined but not configured."
24#elif CONFIG_CONS_INDEX == 2 && !defined(CONFIG_SYS_NS16550_COM2)
25#error "Console port 2 defined but not configured."
26#elif CONFIG_CONS_INDEX == 3 && !defined(CONFIG_SYS_NS16550_COM3)
27#error "Console port 3 defined but not configured."
28#elif CONFIG_CONS_INDEX == 4 && !defined(CONFIG_SYS_NS16550_COM4)
29#error "Console port 4 defined but not configured."
30#elif CONFIG_CONS_INDEX == 5 && !defined(CONFIG_SYS_NS16550_COM5)
31#error "Console port 5 defined but not configured."
32#elif CONFIG_CONS_INDEX == 6 && !defined(CONFIG_SYS_NS16550_COM6)
33#error "Console port 6 defined but not configured."
34#endif
35
36
37
38
39static NS16550_t serial_ports[6] = {
40#ifdef CONFIG_SYS_NS16550_COM1
41 (NS16550_t)CONFIG_SYS_NS16550_COM1,
42#else
43 NULL,
44#endif
45#ifdef CONFIG_SYS_NS16550_COM2
46 (NS16550_t)CONFIG_SYS_NS16550_COM2,
47#else
48 NULL,
49#endif
50#ifdef CONFIG_SYS_NS16550_COM3
51 (NS16550_t)CONFIG_SYS_NS16550_COM3,
52#else
53 NULL,
54#endif
55#ifdef CONFIG_SYS_NS16550_COM4
56 (NS16550_t)CONFIG_SYS_NS16550_COM4,
57#else
58 NULL,
59#endif
60#ifdef CONFIG_SYS_NS16550_COM5
61 (NS16550_t)CONFIG_SYS_NS16550_COM5,
62#else
63 NULL,
64#endif
65#ifdef CONFIG_SYS_NS16550_COM6
66 (NS16550_t)CONFIG_SYS_NS16550_COM6
67#else
68 NULL
69#endif
70};
71
72#define PORT serial_ports[port-1]
73
74
75#define DECLARE_ESERIAL_FUNCTIONS(port) \
76 static int eserial##port##_init(void) \
77 { \
78 int clock_divisor; \
79 clock_divisor = ns16550_calc_divisor(serial_ports[port-1], \
80 CONFIG_SYS_NS16550_CLK, gd->baudrate); \
81 NS16550_init(serial_ports[port-1], clock_divisor); \
82 return 0 ; \
83 } \
84 static void eserial##port##_setbrg(void) \
85 { \
86 serial_setbrg_dev(port); \
87 } \
88 static int eserial##port##_getc(void) \
89 { \
90 return serial_getc_dev(port); \
91 } \
92 static int eserial##port##_tstc(void) \
93 { \
94 return serial_tstc_dev(port); \
95 } \
96 static void eserial##port##_putc(const char c) \
97 { \
98 serial_putc_dev(port, c); \
99 } \
100 static void eserial##port##_puts(const char *s) \
101 { \
102 serial_puts_dev(port, s); \
103 }
104
105
106#define INIT_ESERIAL_STRUCTURE(port, __name) { \
107 .name = __name, \
108 .start = eserial##port##_init, \
109 .stop = NULL, \
110 .setbrg = eserial##port##_setbrg, \
111 .getc = eserial##port##_getc, \
112 .tstc = eserial##port##_tstc, \
113 .putc = eserial##port##_putc, \
114 .puts = eserial##port##_puts, \
115}
116
117static void _serial_putc(const char c, const int port)
118{
119 if (c == '\n')
120 NS16550_putc(PORT, '\r');
121
122 NS16550_putc(PORT, c);
123}
124
125static void _serial_puts(const char *s, const int port)
126{
127 while (*s) {
128 _serial_putc(*s++, port);
129 }
130}
131
132static int _serial_getc(const int port)
133{
134 return NS16550_getc(PORT);
135}
136
137static int _serial_tstc(const int port)
138{
139 return NS16550_tstc(PORT);
140}
141
142static void _serial_setbrg(const int port)
143{
144 int clock_divisor;
145
146 clock_divisor = ns16550_calc_divisor(PORT, CONFIG_SYS_NS16550_CLK,
147 gd->baudrate);
148 NS16550_reinit(PORT, clock_divisor);
149}
150
151static inline void
152serial_putc_dev(unsigned int dev_index,const char c)
153{
154 _serial_putc(c,dev_index);
155}
156
157static inline void
158serial_puts_dev(unsigned int dev_index,const char *s)
159{
160 _serial_puts(s,dev_index);
161}
162
163static inline int
164serial_getc_dev(unsigned int dev_index)
165{
166 return _serial_getc(dev_index);
167}
168
169static inline int
170serial_tstc_dev(unsigned int dev_index)
171{
172 return _serial_tstc(dev_index);
173}
174
175static inline void
176serial_setbrg_dev(unsigned int dev_index)
177{
178 _serial_setbrg(dev_index);
179}
180
181#if defined(CONFIG_SYS_NS16550_COM1)
182DECLARE_ESERIAL_FUNCTIONS(1);
183struct serial_device eserial1_device =
184 INIT_ESERIAL_STRUCTURE(1, "eserial0");
185#endif
186#if defined(CONFIG_SYS_NS16550_COM2)
187DECLARE_ESERIAL_FUNCTIONS(2);
188struct serial_device eserial2_device =
189 INIT_ESERIAL_STRUCTURE(2, "eserial1");
190#endif
191#if defined(CONFIG_SYS_NS16550_COM3)
192DECLARE_ESERIAL_FUNCTIONS(3);
193struct serial_device eserial3_device =
194 INIT_ESERIAL_STRUCTURE(3, "eserial2");
195#endif
196#if defined(CONFIG_SYS_NS16550_COM4)
197DECLARE_ESERIAL_FUNCTIONS(4);
198struct serial_device eserial4_device =
199 INIT_ESERIAL_STRUCTURE(4, "eserial3");
200#endif
201#if defined(CONFIG_SYS_NS16550_COM5)
202DECLARE_ESERIAL_FUNCTIONS(5);
203struct serial_device eserial5_device =
204 INIT_ESERIAL_STRUCTURE(5, "eserial4");
205#endif
206#if defined(CONFIG_SYS_NS16550_COM6)
207DECLARE_ESERIAL_FUNCTIONS(6);
208struct serial_device eserial6_device =
209 INIT_ESERIAL_STRUCTURE(6, "eserial5");
210#endif
211
212__weak struct serial_device *default_serial_console(void)
213{
214#if CONFIG_CONS_INDEX == 1
215 return &eserial1_device;
216#elif CONFIG_CONS_INDEX == 2
217 return &eserial2_device;
218#elif CONFIG_CONS_INDEX == 3
219 return &eserial3_device;
220#elif CONFIG_CONS_INDEX == 4
221 return &eserial4_device;
222#elif CONFIG_CONS_INDEX == 5
223 return &eserial5_device;
224#elif CONFIG_CONS_INDEX == 6
225 return &eserial6_device;
226#else
227#error "Bad CONFIG_CONS_INDEX."
228#endif
229}
230
231void ns16550_serial_initialize(void)
232{
233#if defined(CONFIG_SYS_NS16550_COM1)
234 serial_register(&eserial1_device);
235#endif
236#if defined(CONFIG_SYS_NS16550_COM2)
237 serial_register(&eserial2_device);
238#endif
239#if defined(CONFIG_SYS_NS16550_COM3)
240 serial_register(&eserial3_device);
241#endif
242#if defined(CONFIG_SYS_NS16550_COM4)
243 serial_register(&eserial4_device);
244#endif
245#if defined(CONFIG_SYS_NS16550_COM5)
246 serial_register(&eserial5_device);
247#endif
248#if defined(CONFIG_SYS_NS16550_COM6)
249 serial_register(&eserial6_device);
250#endif
251}
252
253#endif
254
