blob: 2c30b4f562456ef12c68b277adfccaa8da98dfb6 (
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
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
|
/*
* 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.
*
* Copyright (C) 2001, 2002, 2004 Ralf Baechle
*/
#include <linux/init.h>
#include <linux/console.h>
#include <linux/kdev_t.h>
#include <linux/major.h>
#include <linux/termios.h>
#include <linux/sched.h>
#include <linux/tty.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
#include <asm/serial.h>
/* SUPERIO uart register map */
struct ja_uartregs {
union {
volatile u8 pad0[3];
volatile u8 rbr; /* read only, DLAB == 0 */
volatile u8 pad1[3];
volatile u8 thr; /* write only, DLAB == 0 */
volatile u8 pad2[3];
volatile u8 dll; /* DLAB == 1 */
} u1;
union {
volatile u8 pad0[3];
volatile u8 ier; /* DLAB == 0 */
volatile u8 pad1[3];
volatile u8 dlm; /* DLAB == 1 */
} u2;
union {
volatile u8 pad0[3];
volatile u8 iir; /* read only */
volatile u8 pad1[3];
volatile u8 fcr; /* write only */
} u3;
volatile u8 pad0[3];
volatile u8 iu_lcr;
volatile u8 pad1[3];
volatile u8 iu_mcr;
volatile u8 pad2[3];
volatile u8 iu_lsr;
volatile u8 pad3[3];
volatile u8 iu_msr;
volatile u8 pad4[3];
volatile u8 iu_scr;
} ja_uregs_t;
#define iu_rbr u1.rbr
#define iu_thr u1.thr
#define iu_dll u1.dll
#define iu_ier u2.ier
#define iu_dlm u2.dlm
#define iu_iir u3.iir
#define iu_fcr u3.fcr
extern unsigned long uart_base;
static inline struct ja_uartregs *console_uart(void)
{
return (struct ja_uartregs *) (uart_base + 0x23UL);
}
void prom_putchar(char c)
{
struct ja_uartregs *uart = console_uart();
while ((uart->iu_lsr & 0x20) == 0);
uart->iu_thr = c;
}
static void inline ja_console_probe(void)
{
struct uart_port up;
/*
* Register to interrupt zero because we share the interrupt with
* the serial driver which we don't properly support yet.
*/
memset(&up, 0, sizeof(up));
up.membase = (unsigned char *) uart_base + 0x23UL;
up.irq = JAGUAR_ATX_SERIAL1_IRQ;
up.uartclk = JAGUAR_ATX_UART_CLK;
up.regshift = 2;
up.iotype = UPIO_MEM;
up.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
up.line = 0;
if (early_serial_setup(&up))
printk(KERN_ERR "Early serial init of port 0 failed\n");
}
__init void ja_setup_console(void)
{
ja_console_probe();
}
|
