2 * arch/ppc/boot/common/misc-common.c
4 * Misc. bootloader code (almost) all platforms can use
6 * Author: Johnnie Peters <jpeters@mvista.com>
7 * Editor: Tom Rini <trini@mvista.com>
9 * Derived from arch/ppc/boot/prep/misc.c
11 * 2000-2001 (c) MontaVista, Software, Inc. This file is licensed under
12 * the terms of the GNU General Public License version 2. This program
13 * is licensed "as is" without any warranty of any kind, whether express
17 #include <stdarg.h> /* for va_ bits */
18 #include <linux/config.h>
19 #include <linux/string.h>
20 #include <linux/zlib.h>
23 /* If we're on a PReP, assume we have a keyboard controller
24 * Also note, if we're not PReP, we assume you are a serial
26 #if defined(CONFIG_PPC_PREP) && defined(CONFIG_VGA_CONSOLE)
27 extern void cursor(int x
, int y
);
28 extern void scroll(void);
30 extern int lines
, cols
;
31 extern int orig_x
, orig_y
;
32 extern int keyb_present
;
33 extern int CRT_tstc(void);
34 extern int CRT_getc(void);
36 int cursor(int x
, int y
) {return 0;}
43 #define keyb_present 0
44 int CRT_tstc(void) {return 0;}
45 int CRT_getc(void) {return 0;}
48 extern char *avail_ram
;
49 extern char *end_avail
;
52 void puts(const char *);
53 void putc(const char c
);
54 void puthex(unsigned long val
);
55 void _bcopy(char *src
, char *dst
, int len
);
56 void gunzip(void *, int, unsigned char *, int *);
57 static int _cvt(unsigned long val
, char *buf
, long radix
, char *digits
);
59 void _vprintk(void(*putc
)(const char), const char *fmt0
, va_list ap
);
60 unsigned char *ISA_io
= NULL
;
62 #if defined(CONFIG_SERIAL_CPM_CONSOLE) || defined(CONFIG_SERIAL_8250_CONSOLE) \
63 || defined(CONFIG_SERIAL_MPC52xx_CONSOLE)
64 extern unsigned long com_port
;
66 extern int serial_tstc(unsigned long com_port
);
67 extern unsigned char serial_getc(unsigned long com_port
);
68 extern void serial_putc(unsigned long com_port
, unsigned char c
);
84 #if defined(CONFIG_SERIAL_CPM_CONSOLE) || defined(CONFIG_SERIAL_8250_CONSOLE) \
85 || defined(CONFIG_SERIAL_MPC52xx_CONSOLE)
87 return (CRT_tstc() || serial_tstc(com_port
));
89 return (serial_tstc(com_port
));
98 #if defined(CONFIG_SERIAL_CPM_CONSOLE) || defined(CONFIG_SERIAL_8250_CONSOLE) \
99 || defined(CONFIG_SERIAL_MPC52xx_CONSOLE)
100 if (serial_tstc(com_port
))
101 return (serial_getc(com_port
));
102 #endif /* serial console */
114 #if defined(CONFIG_SERIAL_CPM_CONSOLE) || defined(CONFIG_SERIAL_8250_CONSOLE) \
115 || defined(CONFIG_SERIAL_MPC52xx_CONSOLE)
116 serial_putc(com_port
, c
);
118 serial_putc(com_port
, '\r');
119 #endif /* serial console */
126 if ( ++y
>= lines
) {
130 } else if (c
== '\r') {
132 } else if (c
== '\b') {
137 vidmem
[ ( x
+ cols
* y
) * 2 ] = c
;
140 if ( ++y
>= lines
) {
153 void puts(const char *s
)
161 while ( ( c
= *s
++ ) != '\0' ) {
162 #if defined(CONFIG_SERIAL_CPM_CONSOLE) || defined(CONFIG_SERIAL_8250_CONSOLE) \
163 || defined(CONFIG_SERIAL_MPC52xx_CONSOLE)
164 serial_putc(com_port
, c
);
165 if ( c
== '\n' ) serial_putc(com_port
, '\r');
166 #endif /* serial console */
170 if ( ++y
>= lines
) {
174 } else if (c
== '\b') {
179 vidmem
[ ( x
+ cols
* y
) * 2 ] = c
;
182 if ( ++y
>= lines
) {
200 puts("\n\n -- System halted");
205 static void *zalloc(unsigned size
)
209 size
= (size
+ 7) & -8;
211 if (avail_ram
> end_avail
) {
212 puts("oops... out of memory\n");
219 #define EXTRA_FIELD 4
222 #define RESERVED 0xe0
224 void gunzip(void *dst
, int dstlen
, unsigned char *src
, int *lenp
)
232 if (src
[2] != Z_DEFLATED
|| (flags
& RESERVED
) != 0) {
233 puts("bad gzipped data\n");
236 if ((flags
& EXTRA_FIELD
) != 0)
237 i
= 12 + src
[10] + (src
[11] << 8);
238 if ((flags
& ORIG_NAME
) != 0)
239 while (src
[i
++] != 0)
241 if ((flags
& COMMENT
) != 0)
242 while (src
[i
++] != 0)
244 if ((flags
& HEAD_CRC
) != 0)
247 puts("gunzip: ran out of data in header\n");
251 /* Initialize ourself. */
252 s
.workspace
= zalloc(zlib_inflate_workspacesize());
253 r
= zlib_inflateInit2(&s
, -MAX_WBITS
);
255 puts("zlib_inflateInit2 returned "); puthex(r
); puts("\n");
259 s
.avail_in
= *lenp
- i
;
261 s
.avail_out
= dstlen
;
262 r
= zlib_inflate(&s
, Z_FINISH
);
263 if (r
!= Z_OK
&& r
!= Z_STREAM_END
) {
264 puts("inflate returned "); puthex(r
); puts("\n");
267 *lenp
= s
.next_out
- (unsigned char *) dst
;
272 puthex(unsigned long val
)
275 unsigned char buf
[10];
277 for (i
= 7; i
>= 0; i
--)
279 buf
[i
] = "0123456789ABCDEF"[val
& 0x0F];
290 _printk(char const *fmt
, ...)
295 _vprintk(putc
, fmt
, ap
);
300 #define is_digit(c) ((c >= '0') && (c <= '9'))
303 _vprintk(void(*putc
)(const char), const char *fmt0
, va_list ap
)
305 char c
, sign
, *cp
= 0;
306 int left_prec
, right_prec
, zero_fill
, length
= 0, pad
, pad_on_right
;
309 while ((c
= *fmt0
++))
314 left_prec
= right_prec
= pad_on_right
= 0;
330 left_prec
= (left_prec
* 10) + (c
- '0');
339 right_prec
= (right_prec
* 10) + (c
- '0');
344 right_prec
= left_prec
;
352 val
= va_arg(ap
, long);
361 length
= _cvt(val
, buf
, 10, "0123456789");
364 length
= _cvt(val
, buf
, 16, "0123456789abcdef");
367 length
= _cvt(val
, buf
, 16, "0123456789ABCDEF");
373 cp
= va_arg(ap
, char *);
377 c
= va_arg(ap
, long /*char*/);
383 pad
= left_prec
- length
;
438 _cvt(unsigned long val
, char *buf
, long radix
, char *digits
)
449 *cp
++ = digits
[val
% radix
];
462 _dump_buf_with_offset(unsigned char *p
, int s
, unsigned char *base
)
465 if ((unsigned int)s
> (unsigned int)p
)
467 s
= (unsigned int)s
- (unsigned int)p
;
473 _printk("%06X: ", (int)p
- (int)base
);
476 _printk("%06X: ", p
);
478 for (i
= 0; i
< 16; i
++)
482 _printk("%02X", p
[i
] & 0xFF);
487 if ((i
% 2) == 1) _printk(" ");
488 if ((i
% 8) == 7) _printk(" ");
491 for (i
= 0; i
< 16; i
++)
496 if ((c
< 0x20) || (c
>= 0x7F)) c
= '.';
510 _dump_buf(unsigned char *p
, int s
)
513 _dump_buf_with_offset(p
, s
, 0);
516 /* Very simple inb/outb routines. We declare ISA_io to be 0 above, and
517 * then modify it on platforms which need to. We do it like this
518 * because on some platforms we give inb/outb an exact location, and
519 * on others it's an offset from a given location. -- Tom
522 void ISA_init(unsigned long base
)
524 ISA_io
= (unsigned char *)base
;
528 outb(int port
, unsigned char val
)
530 /* Ensure I/O operations complete */
531 __asm__
volatile("eieio");
538 /* Ensure I/O operations complete */
539 __asm__
volatile("eieio");
540 return (ISA_io
[port
]);