/*
* Misc. bootloader code (almost) all platforms can use
*
* Author: Johnnie Peters <jpeters@mvista.com>
* Editor: Tom Rini <trini@mvista.com>
*
* Derived from arch/ppc/boot/prep/misc.c
*
* 2000-2001 (c) MontaVista, Software, Inc. This file is licensed under
* the terms of the GNU General Public License version 2. This program
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*/
#include <stdarg.h> /* for va_ bits */
#include <linux/string.h>
#include <linux/zlib.h>
#include "nonstdio.h"
/* If we're on a PReP, assume we have a keyboard controller
* Also note, if we're not PReP, we assume you are a serial
* console - Tom */
#if defined(CONFIG_PPC_PREP) && defined(CONFIG_VGA_CONSOLE)
extern void cursor(int x, int y);
extern void scroll(void);
extern char *vidmem;
extern int lines, cols;
extern int orig_x, orig_y;
extern int keyb_present;
extern int CRT_tstc(void);
extern int CRT_getc(void);
#else
int cursor(int x, int y) {return 0;}
void scroll(void) {}
char vidmem[1];
#define lines 0
#define cols 0
int orig_x = 0;
int orig_y = 0;
#define keyb_present 0
int CRT_tstc(void) {return 0;}
int CRT_getc(void) {return 0;}
#endif
extern char *avail_ram;
extern char *end_avail;
extern char _end[];
void puts(const char *);
void putc(const char c);
void puthex(unsigned long val);
void gunzip(void *, int, unsigned char *, int *);
static int _cvt(unsigned long val, char *buf, long radix, char *digits);
void _vprintk(void(*putc)(const char), const char *fmt0, va_list ap);
unsigned char *ISA_io = NULL;
#if defined(CONFIG_SERIAL_CPM_CONSOLE) || defined(CONFIG_SERIAL_8250_CONSOLE) \
|| defined(CONFIG_SERIAL_MPC52xx_CONSOLE) \
|| defined(CONFIG_SERIAL_MPSC_CONSOLE)
extern unsigned long com_port;
extern int serial_tstc(unsigned long com_port);
extern unsigned char serial_getc(unsigned long com_port);
extern void serial_putc(unsigned long com_port, unsigned char c);
#endif
void pause(void)
{
puts("pause\n");
}
void exit(void)
{
puts("exit\n");
while(1);
}
int tstc(void)
{
#if defined(CONFIG_SERIAL_CPM_CONSOLE) || defined(CONFIG_SERIAL_8250_CONSOLE) \
|| defined(CONFIG_SERIAL_MPC52xx_CONSOLE) \
|| defined(CONFIG_SERIAL_MPSC_CONSOLE)
if(keyb_present)
return (CRT_tstc() || serial_tstc(com_port));
else
return (serial_tstc(com_port));
#else
return CRT_tstc();
#endif
}
int getc(void)
{
while (1) {
#if defined(CONFIG_SERIAL_CPM_CONSOLE) || defined(CONFIG_SERIAL_8250_CONSOLE) \
|| defined(CONFIG_SERIAL_MPC52xx_CONSOLE) \
|| defined(CONFIG_SERIAL_MPSC_CONSOLE)
if (serial_tstc(com_port))
return (serial_getc(com_port));
#endif /* serial console */
if (keyb_present)
if(CRT_tstc())
return (CRT_getc());
}
}
void
putc(const char c)
{
int x,y;
#if defined(CONFIG_SERIAL_CPM_CONSOLE) || defined(CONFIG_SERIAL_8250_CONSOLE) \
|| defined(CONFIG_SERIAL_MPC52xx_CONSOLE) \
|| defined(CONFIG_SERIAL_MPSC_CONSOLE)
serial_putc(com_port, c);
if ( c == '\n' )
serial_putc(com_port, '\r');
#endif /* serial console */
x = orig_x;
y = orig_y;
if ( c == '\n' ) {
x = 0;
if ( ++y >= lines ) {
scroll();
y--;
}
} else if (c == '\r') {
x = 0;
} else if (c == '\b') {
if (x > 0) {
x--;
}
} else {
vidmem [ ( x + cols * y ) * 2 ] = c;
if ( ++x >= cols ) {
x = 0;
if ( ++y >= lines ) {
scroll();
y--;
}
}
}
cursor(x, y);
orig_x = x;
orig_y = y;
}
void puts(const char *s)
{
int x,y;
char c;
x = orig_x;
y = orig_y;
while ( ( c = *s++ ) != '\0' ) {
#if defined(CONFIG_SERIAL_CPM_CONSOLE) || defined(CONFIG_SERIAL_8250_CONSOLE) \
|| defined(CONFIG_SERIAL_MPC52xx_CONSOLE) \
|| defined(CONFIG_SERIAL_MPSC_CONSOLE)
serial_putc(com_port, c);
if ( c == '\n' ) serial_putc(com_port, '\r');
#endif /* serial console */
if ( c == '\n' ) {
x = 0;
if ( ++y >= lines ) {
scroll();
y--;
}
} else if (c == '\b') {
if (x > 0) {
x--;
}
} else {
vidmem [ ( x + cols * y ) * 2 ] = c;
if ( ++x >= cols ) {
x = 0;
if ( ++y >= lines ) {
scroll();
y--;
}
}
}
}
cursor(x, y);
orig_x = x;
orig_y = y;
}
void error(char *x)
{
puts("\n\n");
puts(x);
puts("\n\n -- System halted");
while(1); /* Halt */
}
static void *zalloc(unsigned size)
{
void *p = avail_ram;
size = (size + 7) & -8;
avail_ram += size;
if (avail_ram > end_avail) {
puts("oops... out of memory\n");
pause();
}
return p;
}
#define HEAD_CRC 2
#define EXTRA_FIELD 4
#define ORIG_NAME 8
#define COMMENT 0x10
#define RESERVED 0xe0
void gunzip(void *dst, int dstlen, unsigned char *src, int *lenp)
{
z_stream s;
int r, i, flags;
/* skip header */
i = 10;
flags = src[3];
if (src[2] != Z_DEFLATED || (flags & RESERVED) != 0) {
puts("bad gzipped data\n");
exit();
}
if ((flags & EXTRA_FIELD) != 0)
i = 12 + src[10] + (src[11] << 8);
if ((flags & ORIG_NAME) != 0)
while (src[i++] != 0)
;
if ((flags & COMMENT) != 0)
while (src[i++] != 0)
;
if ((flags & HEAD_CRC) != 0)
i += 2;
if (i >= *lenp) {
puts("gunzip: ran out of data in header\n");
exit();
}
/* Initialize ourself. */
s.workspace = zalloc(zlib_inflate_workspacesize());
r = zlib_inflateInit2(&s, -MAX_WBITS);
if (r != Z_OK) {
puts("zlib_inflateInit2 returned "); puthex(r); puts("\n");
exit();
}
s.next_in = src + i;
s.avail_in = *lenp - i;
s.next_out = dst;
s.avail_out = dstlen;
r = zlib_inflate(&s, Z_FINISH);
if (r != Z_OK && r != Z_STREAM_END) {
puts("inflate returned "); puthex(r); puts("\n");
exit();
}
*lenp = s.next_out - (unsigned char *) dst;
zlib_inflateEnd(&s);
}
void
puthex(unsigned long val)
{
unsigned char buf[10];
int i;
for (i = 7; i >= 0; i--)
{
buf[i] = "0123456789ABCDEF"[val & 0x0F];
val >>= 4;
}
buf[8] = '\0';
puts(buf);
}
#define FALSE 0
#define TRUE 1
void
_printk(char const *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
_vprintk(putc, fmt, ap);
va_end(ap);
return;
}
#define is_digit(c) ((c >= '0') && (c <= '9'))
void
_vprintk(void(*putc)(const char), const char *fmt0, va_list ap)
{
char c, sign, *cp = 0;
int left_prec, right_prec, zero_fill, length = 0, pad, pad_on_right;
char buf[32];
long val;
while ((c = *fmt0++))
{
if (c == '%')
{
c = *fmt0++;
left_prec = right_prec = pad_on_right = 0;
if (c == '-')
{
c = *fmt0++;
pad_on_right++;
}
if (c == '0')
{
zero_fill = TRUE;
c = *fmt0++;
} else
{
zero_fill = FALSE;
}
while (is_digit(c))
{
left_prec = (left_prec * 10) + (c - '0');
c = *fmt0++;
}
if (c == '.')
{
c = *fmt0++;
zero_fill++;
while (is_digit(c))
{
right_prec = (right_prec * 10) + (c - '0');
c = *fmt0++;
}
} else
{
right_prec = left_prec;
}
sign = '\0';
switch (c)
{
case 'd':
case 'x':
case 'X':
val = va_arg(ap, long);
switch (c)
{
case 'd':
if (val < 0)
{
sign = '-';
val = -val;
}
length = _cvt(val, buf, 10, "0123456789");
break;
case 'x':
length = _cvt(val, buf, 16, "0123456789abcdef");
break;
case 'X':
length = _cvt(val, buf, 16, "0123456789ABCDEF");
break;
}
cp = buf;
break;
case 's':
cp = va_arg(ap, char *);
length = strlen(cp);
break;
case 'c':
c = va_arg(ap, long /*char*/);
(*putc)(c);
continue;
default:
(*putc)('?');
}
pad = left_prec - length;
if (sign != '\0')
{
pad--;
}
if (zero_fill)
{
c = '0';
if (sign != '\0')
{
(*putc)(sign);
sign = '\0';
}
} else
{
c = ' ';
}
if (!pad_on_right)
{
while (pad-- > 0)
{
(*putc)(c);
}
}
if (sign != '\0')
{
(*putc)(sign);
}
while (length-- > 0)
{
(*putc)(c = *cp++);
if (c == '\n')
{
(*putc)('\r');
}
}
if (pad_on_right)
{
while (pad-- > 0)
{
(*putc)(c);
}
}
} else
{
(*putc)(c);
if (c == '\n')
{
(*putc)('\r');
}
}
}
}
int
_cvt(unsigned long val, char *buf, long radix, char *digits)
{
char temp[80];
char *cp = temp;
int length = 0;
if (val == 0)
{ /* Special case */
*cp++ = '0';
} else
while (val)
{
*cp++ = digits[val % radix];
val /= radix;
}
while (cp != temp)
{
*buf++ = *--cp;
length++;
}
*buf = '\0';
return (length);
}
void
_dump_buf_with_offset(unsigned char *p, int s, unsigned char *base)
{
int i, c;
if ((unsigned int)s > (unsigned int)p)
{
s = (unsigned int)s - (unsigned int)p;
}
while (s > 0)
{
if (base)
{
_printk("%06X: ", (int)p - (int)base);
} else
{
_printk("%06X: ", p);
}
for (i = 0; i < 16; i++)
{
if (i < s)
{
_printk("%02X", p[i] & 0xFF);
} else
{
_printk(" ");
}
if ((i % 2) == 1) _printk(" ");
if ((i % 8) == 7) _printk(" ");
}
_printk(" |");
for (i = 0; i < 16; i++)
{
if (i < s)
{
c = p[i] & 0xFF;
if ((c < 0x20) || (c >= 0x7F)) c = '.';
} else
{
c = ' ';
}
_printk("%c", c);
}
_printk("|\n");
s -= 16;
p += 16;
}
}
void
_dump_buf(unsigned char *p, int s)
{
_printk("\n");
_dump_buf_with_offset(p, s, 0);
}
/* Very simple inb/outb routines. We declare ISA_io to be 0 above, and
* then modify it on platforms which need to. We do it like this
* because on some platforms we give inb/outb an exact location, and
* on others it's an offset from a given location. -- Tom
*/
void ISA_init(unsigned long base)
{
ISA_io = (unsigned char *)base;
}
void
outb(int port, unsigned char val)
{
/* Ensure I/O operations complete */
__asm__ volatile("eieio");
ISA_io[port] = val;
}
unsigned char
inb(int port)
{
/* Ensure I/O operations complete */
__asm__ volatile("eieio");
return (ISA_io[port]);
}
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* tab-width: 8
* End:
*/
