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
|
/*
* arch/arm/mach-ns9xxx/include/mach/uncompress.h
*
* Copyright (C) 2006 by Digi International Inc.
* 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 version 2 as published by
* the Free Software Foundation.
*/
#ifndef __ASM_ARCH_UNCOMPRESS_H
#define __ASM_ARCH_UNCOMPRESS_H
#include <asm/io.h>
#define __REG(x) ((void __iomem __force *)(x))
static void putc_dummy(char c, void __iomem *base)
{
/* nothing */
}
#if defined(CONFIG_PROCESSOR_NS9360)
# define NS9360_UARTA __REG(0x90200040)
# define NS9360_UARTB __REG(0x90200000)
# define NS9360_UARTC __REG(0x90300000)
# define NS9360_UARTD __REG(0x90300040)
# define NS9360_UART_ENABLED(base) \
(__raw_readl(NS9360_UARTA) & (1 << 31))
static void putc_ns9360(char c, void __iomem *base)
{
static int t = 0x10000;
do {
if (t)
--t;
if (__raw_readl(base + 8) & (1 << 3)) {
__raw_writeb(c, base + 16);
t = 0x10000;
break;
}
} while (t);
}
#endif
#if defined(CONFIG_PROCESSOR_NS921X)
# define NS921XSYS_CLOCK __REG(0xa090017c)
# define NS921X_UARTA __REG(0x90010000)
# define NS921X_UARTB __REG(0x90018000)
# define NS921X_UARTC __REG(0x90020000)
# define NS921X_UARTD __REG(0x90028000)
# define NS921X_UART_ENABLED(base) \
(__raw_readl((base) + 0x1000) & (1 << 29))
static void putc_ns921x(char c, void __iomem *base)
{
static int t = 0x10000;
do {
if (t)
--t;
if (!(__raw_readl(base) & (1 << 11))) {
__raw_writeb(c, base + 0x0028);
t = 0x10000;
break;
}
} while (t);
}
#include "fim-uncompress.h"
static void putc_ns921x_fim(char ch, void __iomem *base)
{
unsigned int status;
unsigned short data = 1;
int pic = 0;
if ('\n' == ch)
ch = '\r';
data = (data << FIM_SERIAL_DATA_BITS) | (ch & ((1 << FIM_SERIAL_DATA_BITS) - 1));
/* Check if the PIC is tasked with another send-char request */
do {
status = fim_get_exp_reg(pic, 0);
} while (status & FIM_SERIAL_INT_INSERT_CHAR);
/* And send the char using the interrupt function */
fim_set_ctrl_reg(pic, 0, data & 0xFF);
fim_set_ctrl_reg(pic, 1, (data >> 8) & 0xFF);
fim_send_interrupt(pic, FIM_SERIAL_INT_INSERT_CHAR);
}
#endif
static void autodetect(void (**putc)(char, void __iomem *), void __iomem **base)
{
#if defined(CONFIG_PROCESSOR_NS9360)
/* ns9360 */
if (NS9360_UART_ENABLED(NS9360_UARTA)) {
*putc = putc_ns9360;
*base = NS9360_UARTA;
return;
} else if (NS9360_UART_ENABLED(NS9360_UARTB)) {
*putc = putc_ns9360;
*base = NS9360_UARTB;
return;
} else if (NS9360_UART_ENABLED(NS9360_UARTC)) {
*putc = putc_ns9360;
*base = NS9360_UARTC;
return;
} else if (NS9360_UART_ENABLED(NS9360_UARTD)) {
*putc = putc_ns9360;
*base = NS9360_UARTD;
return;
}
#elif defined(CONFIG_PROCESSOR_NS921X)
/* ns921x */
u32 clock = __raw_readl(NS921XSYS_CLOCK);
if ((clock & (1 << 1)) &&
NS921X_UART_ENABLED(NS921X_UARTA)) {
*putc = putc_ns921x;
*base = NS921X_UARTA;
return;
} else if ((clock & (1 << 2)) &&
NS921X_UART_ENABLED(NS921X_UARTB)) {
*putc = putc_ns921x;
*base = NS921X_UARTB;
return;
} else if ((clock & (1 << 3)) &&
NS921X_UART_ENABLED(NS921X_UARTC)) {
*putc = putc_ns921x;
*base = NS921X_UARTC;
return;
} else if ((clock & (1 << 4)) &&
NS921X_UART_ENABLED(NS921X_UARTD)) {
*putc = putc_ns921x;
*base = NS921X_UARTD;
return;
}
# if defined(CONFIG_SERIAL_FIM_CONSOLE)
/* None of the standard UARTs is enabled. Try with the FIMs */
# if defined(CONFIG_FIM_ZERO_SERIAL_SELECTED) && !defined(CONFIG_FIM_ONE_SERIAL_SELECTED)
/* Try with UART on FIM0 */
else if (NS921X_FIM_ENABLED(NS921X_FIM0)) {
*putc = putc_ns921x_fim;
*base = NS921X_FIM0;
return;
}
# elif !defined(CONFIG_FIM_ZERO_SERIAL_SELECTED) && defined(CONFIG_FIM_ONE_SERIAL_SELECTED)
/* Try with UART on FIM1 */
else if (NS921X_FIM_ENABLED(NS921X_FIM1)) {
*putc = putc_ns921x_fim;
*base = NS921X_FIM1;
return;
}
# endif /* FIM_x */
# endif /* SERIAL_FIM_CONSOLE */
#endif /* PROCESSOR_x */
*putc = putc_dummy;
}
void (*myputc)(char, void __iomem *);
void __iomem *base;
static void putc(char c)
{
myputc(c, base);
}
static void arch_decomp_setup(void)
{
autodetect(&myputc, &base);
}
#define arch_decomp_wdog()
static void flush(void)
{
/* nothing */
}
#endif /* ifndef __ASM_ARCH_UNCOMPRESS_H */
|
