blob: 5866ca4d423c9475df4eb95a3bb1afd7d4081f83 (
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
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2012 The ChromiumOS Authors. All rights reserved.
*
* 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; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef CONSOLE_UART_H
#define CONSOLE_UART_H
#include <rules.h>
#include <stdint.h>
/* Return the clock frequency UART uses as reference clock for
* baudrate generator. */
unsigned int uart_platform_refclk(void);
/* Return the baudrate determined from option_table, or when that is
* not used, CONFIG_TTYS0_BAUD.
*/
unsigned int default_baudrate(void);
/* Returns the divisor value for a given baudrate.
* The formula to satisfy is:
* refclk / divisor = baudrate * oversample
*/
unsigned int uart_baudrate_divisor(unsigned int baudrate,
unsigned int refclk, unsigned int oversample);
void uart_init(void);
void uart_tx_byte(unsigned char data);
void uart_tx_flush(void);
unsigned char uart_rx_byte(void);
unsigned int uart_platform_base(int idx);
#if !defined(__ROMCC__)
static inline void *uart_platform_baseptr(int idx)
{
return (void *)uart_platform_base(idx);
}
void oxford_remap(unsigned int new_base);
#define __CONSOLE_SERIAL_ENABLE__ CONFIG_CONSOLE_SERIAL && \
(ENV_BOOTBLOCK || ENV_ROMSTAGE || ENV_RAMSTAGE || \
(ENV_SMM && CONFIG_DEBUG_SMI))
#if __CONSOLE_SERIAL_ENABLE__
static inline void __uart_init(void) { uart_init(); }
static inline void __uart_tx_byte(u8 data) { uart_tx_byte(data); }
static inline void __uart_tx_flush(void) { uart_tx_flush(); }
#else
static inline void __uart_init(void) {}
static inline void __uart_tx_byte(u8 data) {}
static inline void __uart_tx_flush(void) {}
#endif
#endif /* __ROMCC__ */
#endif /* CONSOLE_UART_H */
|
