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Restructure serial in order to prepare for usbserial. As a byproduct simultaneous serial consoles are possible

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-07-18 01:37:19 +02:00
parent 03f286ea9f
commit 75eb7d1116
10 changed files with 733 additions and 295 deletions
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15
commands/terminal.c
View file

@ -59,11 +59,17 @@ handle_command (int argc, char **args, struct abstract_terminal **enabled,
for (aut = autoloads; aut; aut = aut->next)
{
for (term = *disabled; term; term = term->next)
if (grub_strcmp (term->name, aut->name) == 0)
if (grub_strcmp (term->name, aut->name) == 0
|| (aut->name[0] && aut->name[grub_strlen (aut->name) - 1] == '*'
&& grub_memcmp (term->name, aut->name,
grub_strlen (aut->name) - 1) == 0))
break;
if (!term)
for (term = *enabled; term; term = term->next)
if (grub_strcmp (term->name, aut->name) == 0)
if (grub_strcmp (term->name, aut->name) == 0
|| (aut->name[0] && aut->name[grub_strlen (aut->name) - 1] == '*'
&& grub_memcmp (term->name, aut->name,
grub_strlen (aut->name) - 1) == 0))
break;
if (!term)
grub_printf ("%s ", aut->name);
@ -98,7 +104,10 @@ handle_command (int argc, char **args, struct abstract_terminal **enabled,
return grub_error (GRUB_ERR_BAD_ARGUMENT, "unknown terminal '%s'\n",
args[i]);
for (aut = autoloads; aut; aut = aut->next)
if (grub_strcmp (args[i], aut->name) == 0)
if (grub_strcmp (args[i], aut->name) == 0
|| (aut->name[0] && aut->name[grub_strlen (aut->name) - 1] == '*'
&& grub_memcmp (args[i], aut->name,
grub_strlen (aut->name) - 1) == 0))
{
grub_dl_t mod;
mod = grub_dl_load (aut->modname);

2
conf/i386.rmk
View file

@ -56,7 +56,7 @@ multiboot2_mod_ASFLAGS = $(COMMON_ASFLAGS)
# For serial.mod.
pkglib_MODULES += serial.mod
serial_mod_SOURCES = term/serial.c
serial_mod_SOURCES = term/serial.c term/ns8250.c
serial_mod_CFLAGS = $(COMMON_CFLAGS)
serial_mod_LDFLAGS = $(COMMON_LDFLAGS)

67
include/grub/ns8250.h Normal file
View file

@ -0,0 +1,67 @@
/* serial.h - serial device interface */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2000,2001,2002,2005,2007 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_NS8250_HEADER
#define GRUB_NS8250_HEADER 1
/* Macros. */
/* The offsets of UART registers. */
#define UART_TX 0
#define UART_RX 0
#define UART_DLL 0
#define UART_IER 1
#define UART_DLH 1
#define UART_IIR 2
#define UART_FCR 2
#define UART_LCR 3
#define UART_MCR 4
#define UART_LSR 5
#define UART_MSR 6
#define UART_SR 7
/* For LSR bits. */
#define UART_DATA_READY 0x01
#define UART_EMPTY_TRANSMITTER 0x20
/* The type of parity. */
#define UART_NO_PARITY 0x00
#define UART_ODD_PARITY 0x08
#define UART_EVEN_PARITY 0x18
/* The type of the length of stop bit. */
#define UART_1_STOP_BIT 0x00
#define UART_2_STOP_BITS 0x04
/* the switch of DLAB. */
#define UART_DLAB 0x80
/* Enable the FIFO. */
#define UART_ENABLE_FIFO_TRIGGER14 0xC7
/* Enable the FIFO. */
#define UART_ENABLE_FIFO_TRIGGER1 0x07
/* Turn on DTR, RTS, and OUT2. */
#define UART_ENABLE_DTRRTS 0x03
/* Turn on DTR, RTS, and OUT2. */
#define UART_ENABLE_OUT2 0x08
#endif /* ! GRUB_SERIAL_MACHINE_HEADER */

100
include/grub/serial.h
View file

@ -1,7 +1,7 @@
/* serial.h - serial device interface */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2000,2001,2002,2005,2007 Free Software Foundation, Inc.
* Copyright (C) 2010 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -20,30 +20,51 @@
#ifndef GRUB_SERIAL_HEADER
#define GRUB_SERIAL_HEADER 1
/* Macros. */
#include <grub/types.h>
#include <grub/cpu/io.h>
#include <grub/usb.h>
#include <grub/list.h>
/* The offsets of UART registers. */
#define UART_TX 0
#define UART_RX 0
#define UART_DLL 0
#define UART_IER 1
#define UART_DLH 1
#define UART_IIR 2
#define UART_FCR 2
#define UART_LCR 3
#define UART_MCR 4
#define UART_LSR 5
#define UART_MSR 6
#define UART_SR 7
struct grub_serial_port;
/* For LSR bits. */
#define UART_DATA_READY 0x01
#define UART_EMPTY_TRANSMITTER 0x20
struct grub_serial_driver
{
grub_err_t (*configure) (struct grub_serial_port *port,
unsigned speed,
unsigned short word_len,
unsigned int parity,
unsigned short stop_bits);
int (*fetch) (struct grub_serial_port *port);
void (*put) (struct grub_serial_port *port, const int c);
};
/* The type of parity. */
#define UART_NO_PARITY 0x00
#define UART_ODD_PARITY 0x08
#define UART_EVEN_PARITY 0x18
struct grub_serial_port
{
struct grub_serial_port *next;
char *name;
unsigned speed;
unsigned short word_len;
unsigned int parity;
unsigned short stop_bits;
struct grub_serial_driver *driver;
/* This should be void *data but since serial is useful as an early console
when malloc isn't available it's a union.
*/
union
{
grub_port_t port;
struct
{
grub_usb_device_t dev;
int in_endp;
int out_endp;
};
};
};
grub_err_t grub_serial_register (struct grub_serial_port *port);
void grub_serial_unregister (struct grub_serial_port *port);
/* The type of word length. */
#define UART_5BITS_WORD 0x00
@ -51,23 +72,30 @@
#define UART_7BITS_WORD 0x02
#define UART_8BITS_WORD 0x03
/* The type of parity. */
#define UART_NO_PARITY 0x00
#define UART_ODD_PARITY 0x08
#define UART_EVEN_PARITY 0x18
/* The type of the length of stop bit. */
#define UART_1_STOP_BIT 0x00
#define UART_2_STOP_BITS 0x04
/* the switch of DLAB. */
#define UART_DLAB 0x80
static inline void
grub_serial_fill_defaults (struct grub_serial_port *port)
{
/* Set default settings. */
#ifdef GRUB_MACHINE_MIPS_YEELOONG
port->speed = 115200;
#else
port->speed = 9600;
#endif
port->word_len = UART_8BITS_WORD;
port->parity = UART_NO_PARITY;
port->stop_bits = UART_1_STOP_BIT;
}
/* Enable the FIFO. */
#define UART_ENABLE_FIFO_TRIGGER14 0xC7
void grub_ns8250_init (void);
char *grub_serial_ns8250_add_port (grub_port_t port);
/* Enable the FIFO. */
#define UART_ENABLE_FIFO_TRIGGER1 0x07
/* Turn on DTR, RTS, and OUT2. */
#define UART_ENABLE_DTRRTS 0x03
/* Turn on DTR, RTS, and OUT2. */
#define UART_ENABLE_OUT2 0x08
#endif /* ! GRUB_SERIAL_MACHINE_HEADER */
#endif

4
include/grub/terminfo.h
View file

@ -32,7 +32,7 @@ struct grub_terminfo_input_state
{
int input_buf[GRUB_TERMINFO_READKEY_MAX_LEN];
int npending;
int (*readkey) (void);
int (*readkey) (struct grub_term_input *term);
};
struct grub_terminfo_output_state
@ -51,7 +51,7 @@ struct grub_terminfo_output_state
unsigned int xpos, ypos;
void (*put) (const int c);
void (*put) (struct grub_term_output *term, const int c);
};
void EXPORT_FUNC(grub_terminfo_gotoxy) (grub_term_output_t term,

1
include/grub/usb.h
View file

@ -19,6 +19,7 @@
#ifndef GRUB_USB_H
#define GRUB_USB_H 1
#include <grub/err.h>
#include <grub/usbdesc.h>
#include <grub/usbtrans.h>

212
term/ns8250.c Normal file
View file

@ -0,0 +1,212 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2000,2001,2002,2003,2004,2005,2007,2008,2009,2010 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/machine/memory.h>
#include <grub/serial.h>
#include <grub/ns8250.h>
#include <grub/types.h>
#include <grub/dl.h>
#include <grub/misc.h>
#include <grub/cpu/io.h>
#include <grub/mm.h>
#ifdef GRUB_MACHINE_PCBIOS
static const unsigned short *serial_hw_io_addr = (const unsigned short *) GRUB_MEMORY_MACHINE_BIOS_DATA_AREA_ADDR;
#define GRUB_SERIAL_PORT_NUM 4
#else
#include <grub/machine/serial.h>
static const grub_port_t serial_hw_io_addr[] = GRUB_MACHINE_SERIAL_PORTS;
#define GRUB_SERIAL_PORT_NUM (ARRAY_SIZE(serial_hw_io_addr))
#endif
/* Fetch a key. */
static int
serial_hw_fetch (struct grub_serial_port *port)
{
if (grub_inb (port->port + UART_LSR) & UART_DATA_READY)
return grub_inb (port->port + UART_RX);
return -1;
}
/* Put a character. */
static void
serial_hw_put (struct grub_serial_port *port, const int c)
{
unsigned int timeout = 100000;
/* Wait until the transmitter holding register is empty. */
while ((grub_inb (port->port + UART_LSR) & UART_EMPTY_TRANSMITTER) == 0)
{
if (--timeout == 0)
/* There is something wrong. But what can I do? */
return;
}
grub_outb (c, port->port + UART_TX);
}
/* Convert speed to divisor. */
static unsigned short
serial_get_divisor (unsigned int speed)
{
unsigned int i;
/* The structure for speed vs. divisor. */
struct divisor
{
unsigned int speed;
unsigned short div;
};
/* The table which lists common configurations. */
/* 1843200 / (speed * 16) */
static struct divisor divisor_tab[] =
{
{ 2400, 0x0030 },
{ 4800, 0x0018 },
{ 9600, 0x000C },
{ 19200, 0x0006 },
{ 38400, 0x0003 },
{ 57600, 0x0002 },
{ 115200, 0x0001 }
};
/* Set the baud rate. */
for (i = 0; i < sizeof (divisor_tab) / sizeof (divisor_tab[0]); i++)
if (divisor_tab[i].speed == speed)
/* UART in Yeeloong runs twice the usual rate. */
#ifdef GRUB_MACHINE_MIPS_YEELOONG
return 2 * divisor_tab[i].div;
#else
return divisor_tab[i].div;
#endif
return 0;
}
/* Initialize a serial device. PORT is the port number for a serial device.
SPEED is a DTE-DTE speed which must be one of these: 2400, 4800, 9600,
19200, 38400, 57600 and 115200. WORD_LEN is the word length to be used
for the device. Likewise, PARITY is the type of the parity and
STOP_BIT_LEN is the length of the stop bit. The possible values for
WORD_LEN, PARITY and STOP_BIT_LEN are defined in the header file as
macros. */
static grub_err_t
serial_hw_configure (struct grub_serial_port *port,
unsigned speed, unsigned short word_len,
unsigned int parity, unsigned short stop_bits)
{
unsigned char status = 0;
unsigned short divisor;
divisor = serial_get_divisor (speed);
if (divisor == 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "bad speed");
port->speed = speed;
port->word_len = word_len;
port->parity = parity;
port->stop_bits = stop_bits;
/* Turn off the interrupt. */
grub_outb (0, port->port + UART_IER);
/* Set DLAB. */
grub_outb (UART_DLAB, port->port + UART_LCR);
/* Set the baud rate. */
grub_outb (divisor & 0xFF, port->port + UART_DLL);
grub_outb (divisor >> 8, port->port + UART_DLH);
/* Set the line status. */
status |= (port->parity | port->word_len | port->stop_bits);
grub_outb (status, port->port + UART_LCR);
/* In Yeeloong serial port has only 3 wires. */
#ifndef GRUB_MACHINE_MIPS_YEELOONG
/* Enable the FIFO. */
grub_outb (UART_ENABLE_FIFO_TRIGGER1, port->port + UART_FCR);
/* Turn on DTR and RTS. */
grub_outb (UART_ENABLE_DTRRTS, port->port + UART_MCR);
#else
/* Enable the FIFO. */
grub_outb (UART_ENABLE_FIFO_TRIGGER14, port->port + UART_FCR);
/* Turn on DTR, RTS, and OUT2. */
grub_outb (UART_ENABLE_DTRRTS | UART_ENABLE_OUT2, port->port + UART_MCR);
#endif
/* Drain the input buffer. */
while (serial_hw_fetch (port) != -1);
/* FIXME: should check if the serial terminal was found. */
return GRUB_ERR_NONE;
}
static struct grub_serial_driver grub_ns8250_driver =
{
.configure = serial_hw_configure,
.fetch = serial_hw_fetch,
.put = serial_hw_put
};
static char com_names[GRUB_SERIAL_PORT_NUM][20];
static struct grub_serial_port com_ports[GRUB_SERIAL_PORT_NUM];
void
grub_ns8250_init (void)
{
int i;
for (i = 0; i < GRUB_SERIAL_PORT_NUM; i++)
//if (serial_hw_io_addr[i])
{
grub_snprintf (com_names[i], sizeof (com_names[i]), "com%d", i);
com_ports[i].name = com_names[i];
com_ports[i].driver = &grub_ns8250_driver;
grub_serial_fill_defaults (&com_ports[i]);
com_ports[i].port = serial_hw_io_addr[i];
grub_serial_register (&com_ports[i]);
}
}
char *
grub_serial_ns8250_add_port (grub_port_t port)
{
struct grub_serial_port *p;
int i;
for (i = 0; i < GRUB_SERIAL_PORT_NUM; i++)
if (com_ports[i].port == port)
return com_names[i];
p = grub_malloc (sizeof (*p));
if (!p)
return NULL;
p->name = grub_xasprintf ("port%lx", (unsigned long) port);
if (!p->name)
{
grub_free (p);
return NULL;
}
p->driver = &grub_ns8250_driver;
grub_serial_fill_defaults (p);
p->port = port;
grub_serial_register (p);
return p->name;
}

439
term/serial.c
View file

@ -1,6 +1,6 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2000,2001,2002,2003,2004,2005,2007,2008,2009 Free Software Foundation, Inc.
* Copyright (C) 2000,2001,2002,2003,2004,2005,2007,2008,2009,2010 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -16,7 +16,6 @@
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/machine/memory.h>
#include <grub/serial.h>
#include <grub/term.h>
#include <grub/types.h>
@ -26,8 +25,9 @@
#include <grub/cpu/io.h>
#include <grub/extcmd.h>
#include <grub/i18n.h>
#include <grub/list.h>
static unsigned int registered = 0;
#define FOR_SERIAL_PORTS(var) FOR_LIST_ELEMENTS((var), (grub_serial_ports))
/* Argument options. */
static const struct grub_arg_option options[] =
@ -41,154 +41,19 @@ static const struct grub_arg_option options[] =
{0, 0, 0, 0, 0, 0}
};
/* Serial port settings. */
struct serial_port
struct grub_serial_port *grub_serial_ports;
struct grub_serial_output_state
{
grub_port_t port;
unsigned short divisor;
unsigned short word_len;
unsigned int parity;
unsigned short stop_bits;
struct grub_terminfo_output_state tinfo;
struct grub_serial_port *port;
};
/* Serial port settings. */
static struct serial_port serial_settings;
#ifdef GRUB_MACHINE_PCBIOS
static const unsigned short *serial_hw_io_addr = (const unsigned short *) GRUB_MEMORY_MACHINE_BIOS_DATA_AREA_ADDR;
#define GRUB_SERIAL_PORT_NUM 4
#else
#include <grub/machine/serial.h>
static const grub_port_t serial_hw_io_addr[] = GRUB_MACHINE_SERIAL_PORTS;
#define GRUB_SERIAL_PORT_NUM (ARRAY_SIZE(serial_hw_io_addr))
#endif
/* Return the port number for the UNITth serial device. */
static inline grub_port_t
serial_hw_get_port (const unsigned int unit)
struct grub_serial_input_state
{
if (unit < GRUB_SERIAL_PORT_NUM)
return serial_hw_io_addr[unit];
else
return 0;
}
/* Fetch a key. */
static int
serial_hw_fetch (void)
{
if (grub_inb (serial_settings.port + UART_LSR) & UART_DATA_READY)
return grub_inb (serial_settings.port + UART_RX);
return -1;
}
/* Put a character. */
static void
serial_hw_put (const int c)
{
unsigned int timeout = 100000;
/* Wait until the transmitter holding register is empty. */
while ((grub_inb (serial_settings.port + UART_LSR) & UART_EMPTY_TRANSMITTER) == 0)
{
if (--timeout == 0)
/* There is something wrong. But what can I do? */
return;
}
grub_outb (c, serial_settings.port + UART_TX);
}
/* Convert speed to divisor. */
static unsigned short
serial_get_divisor (unsigned int speed)
{
unsigned int i;
/* The structure for speed vs. divisor. */
struct divisor
{
unsigned int speed;
unsigned short div;
};
/* The table which lists common configurations. */
/* 1843200 / (speed * 16) */
static struct divisor divisor_tab[] =
{
{ 2400, 0x0030 },
{ 4800, 0x0018 },
{ 9600, 0x000C },
{ 19200, 0x0006 },
{ 38400, 0x0003 },
{ 57600, 0x0002 },
{ 115200, 0x0001 }
};
/* Set the baud rate. */
for (i = 0; i < sizeof (divisor_tab) / sizeof (divisor_tab[0]); i++)
if (divisor_tab[i].speed == speed)
/* UART in Yeeloong runs twice the usual rate. */
#ifdef GRUB_MACHINE_MIPS_YEELOONG
return 2 * divisor_tab[i].div;
#else
return divisor_tab[i].div;
#endif
return 0;
}
/* Initialize a serial device. PORT is the port number for a serial device.
SPEED is a DTE-DTE speed which must be one of these: 2400, 4800, 9600,
19200, 38400, 57600 and 115200. WORD_LEN is the word length to be used
for the device. Likewise, PARITY is the type of the parity and
STOP_BIT_LEN is the length of the stop bit. The possible values for
WORD_LEN, PARITY and STOP_BIT_LEN are defined in the header file as
macros. */
static grub_err_t
serial_hw_init (void)
{
unsigned char status = 0;
/* Turn off the interrupt. */
grub_outb (0, serial_settings.port + UART_IER);
/* Set DLAB. */
grub_outb (UART_DLAB, serial_settings.port + UART_LCR);
/* Set the baud rate. */
grub_outb (serial_settings.divisor & 0xFF, serial_settings.port + UART_DLL);
grub_outb (serial_settings.divisor >> 8, serial_settings.port + UART_DLH);
/* Set the line status. */
status |= (serial_settings.parity
| serial_settings.word_len
| serial_settings.stop_bits);
grub_outb (status, serial_settings.port + UART_LCR);
/* In Yeeloong serial port has only 3 wires. */
#ifndef GRUB_MACHINE_MIPS_YEELOONG
/* Enable the FIFO. */
grub_outb (UART_ENABLE_FIFO_TRIGGER1, serial_settings.port + UART_FCR);
/* Turn on DTR and RTS. */
grub_outb (UART_ENABLE_DTRRTS, serial_settings.port + UART_MCR);
#else
/* Enable the FIFO. */
grub_outb (UART_ENABLE_FIFO_TRIGGER14, serial_settings.port + UART_FCR);
/* Turn on DTR, RTS, and OUT2. */
grub_outb (UART_ENABLE_DTRRTS | UART_ENABLE_OUT2,
serial_settings.port + UART_MCR);
#endif
/* Drain the input buffer. */
while (serial_hw_fetch () != -1);
/* FIXME: should check if the serial terminal was found. */
return GRUB_ERR_NONE;
}
struct grub_terminfo_input_state tinfo;
struct grub_serial_port *port;
};
static grub_uint16_t
grub_serial_getwh (struct grub_term_output *term __attribute__ ((unused)))
@ -198,16 +63,38 @@ grub_serial_getwh (struct grub_term_output *term __attribute__ ((unused)))
return (TEXT_WIDTH << 8) | TEXT_HEIGHT;
}
struct grub_terminfo_input_state grub_serial_terminfo_input =
static void
serial_put (grub_term_output_t term, const int c)
{
struct grub_serial_output_state *data = term->data;
data->port->driver->put (data->port, c);
}
static int
serial_fetch (grub_term_input_t term)
{
struct grub_serial_input_state *data = term->data;
return data->port->driver->fetch (data->port);
}
struct grub_serial_input_state grub_serial_terminfo_input =
{
.readkey = serial_hw_fetch
.tinfo =
{
.readkey = serial_fetch
}
};
struct grub_terminfo_output_state grub_serial_terminfo_output =
struct grub_serial_output_state grub_serial_terminfo_output =
{
.put = serial_hw_put
.tinfo =
{
.put = serial_put
}
};
int registered = 0;
static struct grub_term_input grub_serial_term_input =
{
.name = "serial",
@ -235,122 +122,200 @@ static struct grub_term_output grub_serial_term_output =
static struct grub_serial_port *
grub_serial_find (char *name)
{
struct grub_serial_port *port;
FOR_SERIAL_PORTS (port)
if (grub_strcmp (port->name, name) == 0)
break;
if (!port && grub_memcmp (name, "port", sizeof ("port") - 1) == 0
&& grub_isdigit (name [sizeof ("port") - 1]))
{
name = grub_serial_ns8250_add_port (grub_strtoul (&name[sizeof ("port") - 1],
0, 16));
if (!name)
return NULL;
FOR_SERIAL_PORTS (port)
if (grub_strcmp (port->name, name) == 0)
break;
}
return port;
}
static grub_err_t
grub_cmd_serial (grub_extcmd_t cmd,
int argc __attribute__ ((unused)),
char **args __attribute__ ((unused)))
grub_cmd_serial (grub_extcmd_t cmd, int argc, char **args)
{
struct grub_arg_list *state = cmd->state;
struct serial_port backup_settings = serial_settings;
grub_err_t hwiniterr;
char pname[40];
char *name = NULL;
struct grub_serial_port *port;
signed speed = -1;
signed short word_len = -1;
signed int parity = -1;
signed short stop_bits = -1;
grub_err_t err;
if (state[0].set)
{
unsigned int unit;
unit = grub_strtoul (state[0].arg, 0, 0);
serial_settings.port = serial_hw_get_port (unit);
if (!serial_settings.port)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "bad unit number");
grub_snprintf (pname, sizeof (pname), "com%ld",
grub_strtoul (state[0].arg, 0, 0));
name = pname;
}
if (state[1].set)
serial_settings.port = (grub_port_t) grub_strtoul (state[1].arg, 0, 0);
{
grub_snprintf (pname, sizeof (pname), "port%lx",
grub_strtoul (state[1].arg, 0, 0));
name = pname;
}
if (argc >= 1)
name = args[0];
if (!name)
name = "com0";
port = grub_serial_find (name);
if (!port)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "unknown serial port");
speed = port->speed;
word_len = port->word_len;
parity = port->parity;
stop_bits = port->stop_bits;
if (state[2].set)
{
unsigned long speed;
speed = grub_strtoul (state[2].arg, 0, 0);
serial_settings.divisor = serial_get_divisor ((unsigned int) speed);
if (serial_settings.divisor == 0)
{
serial_settings = backup_settings;
return grub_error (GRUB_ERR_BAD_ARGUMENT, "bad speed");
}
}
speed = grub_strtoul (state[2].arg, 0, 0);
if (state[3].set)
{
if (! grub_strcmp (state[3].arg, "5"))
serial_settings.word_len = UART_5BITS_WORD;
word_len = UART_5BITS_WORD;
else if (! grub_strcmp (state[3].arg, "6"))
serial_settings.word_len = UART_6BITS_WORD;
word_len = UART_6BITS_WORD;
else if (! grub_strcmp (state[3].arg, "7"))
serial_settings.word_len = UART_7BITS_WORD;
word_len = UART_7BITS_WORD;
else if (! grub_strcmp (state[3].arg, "8"))
serial_settings.word_len = UART_8BITS_WORD;
word_len = UART_8BITS_WORD;
else
{
serial_settings = backup_settings;
return grub_error (GRUB_ERR_BAD_ARGUMENT, "bad word length");
}
return grub_error (GRUB_ERR_BAD_ARGUMENT, "bad word length");
}
if (state[4].set)
{
if (! grub_strcmp (state[4].arg, "no"))
serial_settings.parity = UART_NO_PARITY;
parity = UART_NO_PARITY;
else if (! grub_strcmp (state[4].arg, "odd"))
serial_settings.parity = UART_ODD_PARITY;
parity = UART_ODD_PARITY;
else if (! grub_strcmp (state[4].arg, "even"))
serial_settings.parity = UART_EVEN_PARITY;
parity = UART_EVEN_PARITY;
else
{
serial_settings = backup_settings;
return grub_error (GRUB_ERR_BAD_ARGUMENT, "bad parity");
}
return grub_error (GRUB_ERR_BAD_ARGUMENT, "bad parity");
}
if (state[5].set)
{
if (! grub_strcmp (state[5].arg, "1"))
serial_settings.stop_bits = UART_1_STOP_BIT;
stop_bits = UART_1_STOP_BIT;
else if (! grub_strcmp (state[5].arg, "2"))
serial_settings.stop_bits = UART_2_STOP_BITS;
stop_bits = UART_2_STOP_BITS;
else
{
serial_settings = backup_settings;
return grub_error (GRUB_ERR_BAD_ARGUMENT, "bad number of stop bits");
}
return grub_error (GRUB_ERR_BAD_ARGUMENT, "bad number of stop bits");
}
/* Initialize with new settings. */
hwiniterr = serial_hw_init ();
if (hwiniterr == GRUB_ERR_NONE)
err = port->driver->configure (port, speed, word_len, parity, stop_bits);
if (err)
return err;
if (!registered)
{
/* Register terminal if not yet registered. */
if (registered == 0)
{
grub_term_register_input ("serial", &grub_serial_term_input);
grub_term_register_output ("serial", &grub_serial_term_output);
grub_terminfo_output_register (&grub_serial_term_output, "vt100");
registered = 1;
}
grub_term_register_input ("serial", &grub_serial_term_input);
grub_term_register_output ("serial", &grub_serial_term_output);
}
else
{
/* Initialization with new settings failed. */
if (registered == 1)
{
/* If the terminal is registered, attempt to restore previous
settings. */
serial_settings = backup_settings;
if (serial_hw_init () != GRUB_ERR_NONE)
{
/* If unable to restore settings, unregister terminal. */
grub_term_unregister_input (&grub_serial_term_input);
grub_term_unregister_output (&grub_serial_term_output);
grub_terminfo_output_unregister (&grub_serial_term_output);
registered = 0;
}
}
}
return hwiniterr;
grub_serial_terminfo_output.port = port;
grub_serial_terminfo_input.port = port;
registered = 1;
return GRUB_ERR_NONE;
}
grub_err_t
grub_serial_register (struct grub_serial_port *port)
{
struct grub_term_input *in;
struct grub_term_output *out;
struct grub_serial_input_state *indata;
struct grub_serial_output_state *outdata;
in = grub_malloc (sizeof (*in));
if (!in)
return grub_errno;
indata = grub_malloc (sizeof (*indata));
if (!indata)
{
grub_free (in);
return grub_errno;
}
grub_memcpy (in, &grub_serial_term_input, sizeof (*in));
in->data = indata;
in->name = grub_xasprintf ("serial_%s", port->name);
grub_memcpy (indata, &grub_serial_terminfo_input, sizeof (*indata));
if (!in->name)
{
grub_free (in);
grub_free (indata);
return grub_errno;
}
out = grub_malloc (sizeof (*out));
if (!out)
{
grub_free (in);
grub_free (indata);
grub_free ((char *) in->name);
return grub_errno;
}
outdata = grub_malloc (sizeof (*outdata));
if (!outdata)
{
grub_free (in);
grub_free (indata);
grub_free ((char *) in->name);
grub_free (out);
return grub_errno;
}
grub_memcpy (out, &grub_serial_term_output, sizeof (*out));
out->data = outdata;
out->name = in->name;
grub_memcpy (outdata, &grub_serial_terminfo_output, sizeof (*outdata));
grub_list_push (GRUB_AS_LIST_P (&grub_serial_ports), GRUB_AS_LIST (port));
((struct grub_serial_input_state *) in->data)->port = port;
((struct grub_serial_output_state *) out->data)->port = port;
grub_term_register_input ("serial_*", in);
grub_term_register_output ("serial_*", out);
grub_terminfo_output_register (out, "vt100");
return GRUB_ERR_NONE;
}
void
grub_serial_unregister (struct grub_serial_port *port)
{
grub_list_remove (GRUB_AS_LIST_P (&grub_serial_ports), GRUB_AS_LIST (port));
/* FIXME */
}
static grub_extcmd_t cmd;
GRUB_MOD_INIT(serial)
@ -360,21 +325,13 @@ GRUB_MOD_INIT(serial)
N_("[OPTIONS...]"),
N_("Configure serial port."), options);
/* Set default settings. */
serial_settings.port = serial_hw_get_port (0);
#ifdef GRUB_MACHINE_MIPS_YEELOONG
serial_settings.divisor = serial_get_divisor (115200);
#else
serial_settings.divisor = serial_get_divisor (9600);
#endif
serial_settings.word_len = UART_8BITS_WORD;
serial_settings.parity = UART_NO_PARITY;
serial_settings.stop_bits = UART_1_STOP_BIT;
grub_ns8250_init ();
#ifdef GRUB_MACHINE_MIPS_YEELOONG
{
grub_err_t hwiniterr;
hwiniterr = serial_hw_init ();
hwiniterr = grub_ns8250_driver.init ("com0", &serial_settings);
serial_settings.driver = &grub_ns8250_driver;
if (hwiniterr == GRUB_ERR_NONE)
{
@ -389,11 +346,7 @@ GRUB_MOD_INIT(serial)
GRUB_MOD_FINI(serial)
{
while (grub_serial_ports)
grub_serial_unregister (grub_serial_ports);
grub_unregister_extcmd (cmd);
if (registered == 1) /* Unregister terminal only if registered. */
{
grub_term_unregister_input (&grub_serial_term_input);
grub_term_unregister_output (&grub_serial_term_output);
grub_terminfo_output_unregister (&grub_serial_term_output);
}
}

23
term/terminfo.c
View file

@ -195,7 +195,7 @@ putstr (struct grub_term_output *term, const char *str)
struct grub_terminfo_output_state *data
= (struct grub_terminfo_output_state *) term->data;
while (*str)
data->put (*str++);
data->put (term, *str++);
}
grub_uint16_t
@ -225,7 +225,7 @@ grub_terminfo_gotoxy (struct grub_term_output *term,
else
{
if ((y == data->ypos) && (x == data->xpos - 1))
data->put ('\b');
data->put (term, '\b');
}
data->xpos = x;
@ -348,20 +348,21 @@ grub_terminfo_putchar (struct grub_term_output *term,
data->xpos = 0;
if (data->ypos < grub_term_height (term) - 1)
data->ypos++;
data->put ('\r');
data->put ('\n');
data->put (term, '\r');
data->put (term, '\n');
}
data->xpos += c->estimated_width;
break;
}
data->put (c->base);
data->put (term, c->base);
}
#define ANSI_C0 0x9b
static void
grub_terminfo_readkey (int *keys, int *len, int (*readkey) (void))
grub_terminfo_readkey (struct grub_term_input *term, int *keys, int *len,
int (*readkey) (struct grub_term_input *term))
{
int c;
@ -371,7 +372,7 @@ grub_terminfo_readkey (int *keys, int *len, int (*readkey) (void))
/* On 9600 we have to wait up to 12 milliseconds. */ \
start = grub_get_time_ms (); \
do \
c = readkey (); \
c = readkey (term); \
while (c == -1 && grub_get_time_ms () - start < 12); \
if (c == -1) \
return; \
@ -380,7 +381,7 @@ grub_terminfo_readkey (int *keys, int *len, int (*readkey) (void))
(*len)++; \
}
c = readkey ();
c = readkey (term);
if (c < 0)
{
*len = 0;
@ -475,7 +476,8 @@ grub_terminfo_checkkey (struct grub_term_input *termi)
if (data->npending)
return data->input_buf[0];
grub_terminfo_readkey (data->input_buf, &data->npending, data->readkey);
grub_terminfo_readkey (termi, data->input_buf,
&data->npending, data->readkey);
if (data->npending)
return data->input_buf[0];
@ -491,7 +493,8 @@ grub_terminfo_getkey (struct grub_term_input *termi)
= (struct grub_terminfo_input_state *) (termi->data);
int ret;
while (! data->npending)
grub_terminfo_readkey (data->input_buf, &data->npending, data->readkey);
grub_terminfo_readkey (termi, data->input_buf, &data->npending,
data->readkey);
ret = data->input_buf[0];
data->npending--;

165
term/usbserial.c Normal file
View file

@ -0,0 +1,165 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2000,2001,2002,2003,2004,2005,2007,2008,2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/machine/memory.h>
#include <grub/serial.h>
#include <grub/term.h>
#include <grub/types.h>
#include <grub/dl.h>
#include <grub/misc.h>
#include <grub/terminfo.h>
#include <grub/cpu/io.h>
#include <grub/extcmd.h>
#include <grub/i18n.h>
static unsigned int registered = 0;
/* Argument options. */
static const struct grub_arg_option options[] =
{
{"unit", 'u', 0, N_("Set the serial unit."), 0, ARG_TYPE_INT},
{"speed", 's', 0, N_("Set the serial port speed."), 0, ARG_TYPE_INT},
{"word", 'w', 0, N_("Set the serial port word length."), 0, ARG_TYPE_INT},
{"parity", 'r', 0, N_("Set the serial port parity."), 0, ARG_TYPE_STRING},
{"stop", 't', 0, N_("Set the serial port stop bits."), 0, ARG_TYPE_INT},
{0, 0, 0, 0, 0, 0}
};
/* Serial port settings. */
struct usbserial_port
{
grub_usb_device_t usbdev;
int in_endp;
int out_endp;
unsigned short divisor;
unsigned short word_len;
unsigned int parity;
unsigned short stop_bits;
};
/* Serial port settings. */
static struct serial_port serial_settings;
/* Fetch a key. */
static int
serial_hw_fetch (void)
{
/* FIXME */
return -1;
}
/* Put a character. */
static void
usbserial_hw_put (struct usbserial_port *port, const int c)
{
char cc = c;
grub_usb_bulk_write (port->usbdev, port->out_endp, 1, &cc);
}
static grub_uint16_t
grub_serial_getwh (struct grub_term_output *term __attribute__ ((unused)))
{
const grub_uint8_t TEXT_WIDTH = 80;
const grub_uint8_t TEXT_HEIGHT = 24;
return (TEXT_WIDTH << 8) | TEXT_HEIGHT;
}
struct grub_terminfo_input_state grub_serial_terminfo_input =
{
.readkey = serial_hw_fetch
};
struct grub_terminfo_output_state grub_serial_terminfo_output =
{
.put = usbserial_hw_put
};
static struct grub_term_input grub_serial_term_input =
{
.name = "usbserial",
.init = grub_terminfo_input_init,
.checkkey = grub_terminfo_checkkey,
.getkey = grub_terminfo_getkey,
.data = &grub_serial_terminfo_input
};
static struct grub_term_output grub_serial_term_output =
{
.name = "usbserial",
.putchar = grub_terminfo_putchar,
.getwh = grub_serial_getwh,
.getxy = grub_terminfo_getxy,
.gotoxy = grub_terminfo_gotoxy,
.cls = grub_terminfo_cls,
.setcolorstate = grub_terminfo_setcolorstate,
.setcursor = grub_terminfo_setcursor,
.flags = GRUB_TERM_CODE_TYPE_ASCII,
.data = &grub_serial_terminfo_output,
.normal_color = GRUB_TERM_DEFAULT_NORMAL_COLOR,
.highlight_color = GRUB_TERM_DEFAULT_HIGHLIGHT_COLOR,
};
static grub_extcmd_t cmd;
GRUB_MOD_INIT(serial)
{
cmd = grub_register_extcmd ("serial", grub_cmd_serial,
GRUB_COMMAND_FLAG_BOTH,
N_("[OPTIONS...]"),
N_("Configure serial port."), options);
/* Set default settings. */
serial_settings.port = serial_hw_get_port (0);
#ifdef GRUB_MACHINE_MIPS_YEELOONG
serial_settings.divisor = serial_get_divisor (115200);
#else
serial_settings.divisor = serial_get_divisor (9600);
#endif
serial_settings.word_len = UART_8BITS_WORD;
serial_settings.parity = UART_NO_PARITY;
serial_settings.stop_bits = UART_1_STOP_BIT;
#ifdef GRUB_MACHINE_MIPS_YEELOONG
{
grub_err_t hwiniterr;
hwiniterr = serial_hw_init ();
if (hwiniterr == GRUB_ERR_NONE)
{
grub_term_register_input_active ("serial", &grub_serial_term_input);
grub_term_register_output_active ("serial", &grub_serial_term_output);
registered = 1;
}
}
#endif
}
GRUB_MOD_FINI(serial)
{
grub_unregister_extcmd (cmd);
if (registered == 1) /* Unregister terminal only if registered. */
{
grub_term_unregister_input (&grub_serial_term_input);
grub_term_unregister_output (&grub_serial_term_output);
grub_terminfo_output_unregister (&grub_serial_term_output);
}
}