fix a minor bug in diskless, add a serial emulation into the grub shell, fix a cosmetic problem in the grub shell.
This commit is contained in:
okuji
parent
fbd0ada4bb
commit
443bdcb325
6 changed files with 225 additions and 8 deletions
28
ChangeLog
28
ChangeLog
|
|
@ -1,3 +1,31 @@
|
|||
2000-08-13 OKUJI Yoshinori <okuji@gnu.org>
|
||||
|
||||
* grub/main.c (main): Move the version number inside the
|
||||
parentheses, since the grub shell is merely one of the programs
|
||||
included in GNU GRUB.
|
||||
|
||||
2000-08-13 OKUJI Yoshinori <okuji@gnu.org>
|
||||
|
||||
Add a serial device emulation into the grub shell.
|
||||
|
||||
* grub/asmstub.c: Include sys/time.h and termios.h.
|
||||
(serial_fd): New variable.
|
||||
(serial_device): Likewise.
|
||||
(serial_getkey): New function.
|
||||
(serial_checkkey): Likewise.
|
||||
(serial_putchar): Likewise.
|
||||
(get_termios_speed): Likewise.
|
||||
(serial_init): Likewise.
|
||||
(set_serial_device): Likewise.
|
||||
(grub_stage2): Restore SERIAL_DEVICE and SERIAL_FD, if they were
|
||||
allocated.
|
||||
* stage2/serial.h [GRUB_UTIL] (set_serial_device): Declared.
|
||||
|
||||
2000-08-13 OKUJI Yoshinori <okuji@gnu.org>
|
||||
|
||||
* stage2/asm.S (codestart) [SUPPORT_DISKLESS]: Don't reset a
|
||||
disk system. That is not only uncessary but also harmful.
|
||||
|
||||
2000-08-12 OKUJI Yoshinori <okuji@gnu.org>
|
||||
|
||||
Add a serial device driver (but only the driver).
|
||||
|
|
|
|||
10
docs/grub.8
10
docs/grub.8
|
|
@ -1,7 +1,7 @@
|
|||
.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.020.
|
||||
.TH GRUB "8" "August 2000" "GNU GRUB 0.5.96" FSF
|
||||
.TH GRUB "8" "August 2000" "grub (GNU GRUB 0.5.96)" FSF
|
||||
.SH NAME
|
||||
GRUB \- the grub shell
|
||||
grub \- the grub shell
|
||||
.SH SYNOPSIS
|
||||
.B grub
|
||||
[\fIOPTION\fR]...
|
||||
|
|
@ -53,13 +53,13 @@ print version information and exit
|
|||
Report bugs to <bug-grub@gnu.org>.
|
||||
.SH "SEE ALSO"
|
||||
The full documentation for
|
||||
.B GRUB
|
||||
.B grub
|
||||
is maintained as a Texinfo manual. If the
|
||||
.B info
|
||||
and
|
||||
.B GRUB
|
||||
.B grub
|
||||
programs are properly installed at your site, the command
|
||||
.IP
|
||||
.B info GRUB
|
||||
.B info grub
|
||||
.PP
|
||||
should give you access to the complete manual.
|
||||
|
|
|
|||
183
grub/asmstub.c
183
grub/asmstub.c
|
|
@ -39,6 +39,8 @@ int grub_stage2 (void);
|
|||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include <setjmp.h>
|
||||
#include <sys/time.h>
|
||||
#include <termios.h>
|
||||
|
||||
#ifdef __linux__
|
||||
# include <sys/ioctl.h> /* ioctl */
|
||||
|
|
@ -58,6 +60,7 @@ int grub_stage2 (void);
|
|||
#define WITHOUT_LIBC_STUBS 1
|
||||
#include <shared.h>
|
||||
#include <device.h>
|
||||
#include <serial.h>
|
||||
|
||||
/* Simulated memory sizes. */
|
||||
#define EXTENDED_MEMSIZE (3 * 1024 * 1024) /* 3MB */
|
||||
|
|
@ -80,6 +83,12 @@ char **device_map = 0;
|
|||
/* The jump buffer for exiting correctly. */
|
||||
static jmp_buf env_for_exit;
|
||||
|
||||
/* The file descriptor for a serial device. */
|
||||
static int serial_fd = -1;
|
||||
|
||||
/* The file name of a serial device. */
|
||||
static char *serial_device = 0;
|
||||
|
||||
/* The main entry point into this mess. */
|
||||
int
|
||||
grub_stage2 (void)
|
||||
|
|
@ -183,6 +192,9 @@ grub_stage2 (void)
|
|||
close (disks[i].flags);
|
||||
}
|
||||
|
||||
if (serial_fd >= 0)
|
||||
close (serial_fd);
|
||||
|
||||
/* Release memory. */
|
||||
restore_device_map (device_map);
|
||||
device_map = 0;
|
||||
|
|
@ -191,6 +203,10 @@ grub_stage2 (void)
|
|||
free (scratch);
|
||||
grub_scratch_mem = 0;
|
||||
|
||||
if (serial_device)
|
||||
free (serial_device);
|
||||
serial_device = 0;
|
||||
|
||||
/* Ahh... at last we're ready to return to caller. */
|
||||
return status;
|
||||
}
|
||||
|
|
@ -802,3 +818,170 @@ stop_floppy (void)
|
|||
{
|
||||
/* NOTUSED */
|
||||
}
|
||||
|
||||
/* The serial version of getkey. */
|
||||
int
|
||||
serial_getkey (void)
|
||||
{
|
||||
char c;
|
||||
|
||||
if (nread (serial_fd, &c, 1) != 1)
|
||||
stop ();
|
||||
|
||||
return c;
|
||||
}
|
||||
|
||||
/* The serial version of checkkey. */
|
||||
int
|
||||
serial_checkkey (void)
|
||||
{
|
||||
fd_set fds;
|
||||
struct timeval timeout;
|
||||
|
||||
/* Wait only for the serial device. */
|
||||
FD_ZERO (&fds);
|
||||
FD_SET (serial_fd, &fds);
|
||||
|
||||
/* Set the timeout to 100ms. */
|
||||
timeout.tv_sec = 0;
|
||||
timeout.tv_usec = 100000;
|
||||
|
||||
return select (serial_fd + 1, &fds, 0, 0, 0) > 0 ? : -1;
|
||||
}
|
||||
|
||||
/* The serial version of grub_putchar. */
|
||||
void
|
||||
serial_putchar (int c)
|
||||
{
|
||||
char ch = (char) c;
|
||||
|
||||
if (nwrite (serial_fd, &ch, 1) != 1)
|
||||
stop ();
|
||||
}
|
||||
|
||||
static speed_t
|
||||
get_termios_speed (int speed)
|
||||
{
|
||||
switch (speed)
|
||||
{
|
||||
case 2400: return B2400;
|
||||
case 4800: return B4800;
|
||||
case 9600: return B9600;
|
||||
case 19200: return B19200;
|
||||
case 38400: return B38400;
|
||||
#ifdef B57600
|
||||
case 57600: return B57600;
|
||||
#endif
|
||||
#ifdef B115200
|
||||
case 115200: return B115200;
|
||||
#endif
|
||||
}
|
||||
|
||||
return B0;
|
||||
}
|
||||
|
||||
/* Initialize a serial device. In the grub shell, PORT is unused. */
|
||||
int
|
||||
serial_init (unsigned short port, unsigned int speed,
|
||||
int word_len, int parity, int stop_bit_len)
|
||||
{
|
||||
struct termios termios;
|
||||
speed_t termios_speed;
|
||||
|
||||
/* Check if the file name is specified. */
|
||||
if (! serial_device)
|
||||
return 0;
|
||||
|
||||
/* Open the device file. */
|
||||
serial_fd = open (serial_device, O_RDWR | O_NOCTTY | O_NDELAY | O_SYNC);
|
||||
if (serial_fd < 0)
|
||||
return 0;
|
||||
|
||||
/* Get the termios parameters. */
|
||||
if (tcgetattr (serial_fd, &termios))
|
||||
goto fail;
|
||||
|
||||
/* Raw mode. */
|
||||
cfmakeraw (&termios);
|
||||
|
||||
/* Set the speed. */
|
||||
termios_speed = get_termios_speed (speed);
|
||||
if (termios_speed == B0)
|
||||
goto fail;
|
||||
|
||||
cfsetispeed (&termios, termios_speed);
|
||||
cfsetospeed (&termios, termios_speed);
|
||||
|
||||
/* Set the word length. */
|
||||
termios.c_cflag &= ~CSIZE;
|
||||
switch (word_len)
|
||||
{
|
||||
case UART_5BITS_WORD:
|
||||
termios.c_cflag |= CS5;
|
||||
break;
|
||||
case UART_6BITS_WORD:
|
||||
termios.c_cflag |= CS6;
|
||||
break;
|
||||
case UART_7BITS_WORD:
|
||||
termios.c_cflag |= CS7;
|
||||
break;
|
||||
case UART_8BITS_WORD:
|
||||
termios.c_cflag |= CS8;
|
||||
break;
|
||||
default:
|
||||
goto fail;
|
||||
}
|
||||
|
||||
/* Set the parity. */
|
||||
switch (parity)
|
||||
{
|
||||
case UART_NO_PARITY:
|
||||
termios.c_cflag &= ~PARENB;
|
||||
break;
|
||||
case UART_ODD_PARITY:
|
||||
termios.c_cflag |= PARENB;
|
||||
termios.c_cflag |= PARODD;
|
||||
break;
|
||||
case UART_EVEN_PARITY:
|
||||
termios.c_cflag |= PARENB;
|
||||
termios.c_cflag &= ~PARODD;
|
||||
break;
|
||||
default:
|
||||
goto fail;
|
||||
}
|
||||
|
||||
/* Set the length of stop bit. */
|
||||
switch (stop_bit_len)
|
||||
{
|
||||
case UART_1_STOP_BIT:
|
||||
termios.c_cflag &= ~CSTOPB;
|
||||
break;
|
||||
case UART_2_STOP_BITS:
|
||||
termios.c_cflag |= CSTOPB;
|
||||
break;
|
||||
default:
|
||||
goto fail;
|
||||
}
|
||||
|
||||
/* Set the parameters. */
|
||||
if (tcsetattr (serial_fd, TCSANOW, &termios))
|
||||
goto fail;
|
||||
|
||||
return 1;
|
||||
|
||||
fail:
|
||||
close (serial_fd);
|
||||
serial_fd = -1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Set the file name of a serial device (or a pty device). This is a
|
||||
function specific to the grub shell. */
|
||||
void
|
||||
set_serial_device (const char *device)
|
||||
{
|
||||
if (serial_device)
|
||||
free (serial_device);
|
||||
|
||||
serial_device = strdup (device);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -148,7 +148,7 @@ main (int argc, char **argv)
|
|||
break;
|
||||
|
||||
case OPT_VERSION:
|
||||
printf ("GNU GRUB " VERSION "\n");
|
||||
printf ("grub (GNU GRUB " VERSION ")\n");
|
||||
exit (0);
|
||||
break;
|
||||
|
||||
|
|
|
|||
|
|
@ -110,10 +110,10 @@ codestart:
|
|||
#ifndef SUPPORT_DISKLESS
|
||||
/* save boot drive reference */
|
||||
ADDR32 movb %dl, EXT_C(boot_drive)
|
||||
#endif
|
||||
|
||||
/* reset disk system (%ah = 0) */
|
||||
int $0x13
|
||||
#endif
|
||||
|
||||
/* transition to protected mode */
|
||||
DATA32 call EXT_C(real_to_prot)
|
||||
|
|
|
|||
|
|
@ -84,4 +84,10 @@ unsigned short serial_get_port (int unit);
|
|||
int serial_init (unsigned short port, unsigned int speed,
|
||||
int word_len, int parity, int stop_bit_len);
|
||||
|
||||
#ifdef GRUB_UTIL
|
||||
/* Set the file name of a serial device (or a pty device). This is a
|
||||
function specific to the grub shell. */
|
||||
void set_serial_device (const char *device);
|
||||
#endif /* GRUB_UTIL */
|
||||
|
||||
#endif /* ! GRUB_SERIAL_HEADER */
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue