--- /dev/null
+/*
+ * 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/serial.h>
+#include <grub/usbserial.h>
+
+void
+grub_usbserial_fini (struct grub_serial_port *port)
+{
+ port->usbdev->config[port->configno].interf[port->interfno].detach_hook = 0;
+ port->usbdev->config[port->configno].interf[port->interfno].attached = 0;
+}
+
+void
+grub_usbserial_detach (grub_usb_device_t usbdev, int configno, int interfno)
+{
+ static struct grub_serial_port *port;
+ port = usbdev->config[configno].interf[interfno].detach_data;
+
+ grub_serial_unregister (port);
+}
+
+static int usbnum = 0;
+
+int
+grub_usbserial_attach (grub_usb_device_t usbdev, int configno, int interfno,
+ struct grub_serial_driver *driver)
+{
+ struct grub_serial_port *port;
+ int j;
+ struct grub_usb_desc_if *interf;
+
+ interf = usbdev->config[configno].interf[interfno].descif;
+
+ port = grub_malloc (sizeof (*port));
+ if (!port)
+ {
+ grub_print_error ();
+ return 0;
+ }
+
+ port->name = grub_xasprintf ("usb%d", usbnum++);
+ if (!port->name)
+ {
+ grub_free (port);
+ grub_print_error ();
+ return 0;
+ }
+
+ port->usbdev = usbdev;
+ port->driver = driver;
+ for (j = 0; j < interf->endpointcnt; j++)
+ {
+ struct grub_usb_desc_endp *endp;
+ endp = &usbdev->config[0].interf[interfno].descendp[j];
+
+ if ((endp->endp_addr & 128) && (endp->attrib & 3) == 2)
+ {
+ /* Bulk IN endpoint. */
+ port->in_endp = endp;
+ }
+ else if (!(endp->endp_addr & 128) && (endp->attrib & 3) == 2)
+ {
+ /* Bulk OUT endpoint. */
+ port->out_endp = endp;
+ }
+ }
+ if (!port->out_endp || !port->in_endp)
+ {
+ grub_free (port->name);
+ grub_free (port);
+ return 0;
+ }
+
+ port->configno = configno;
+ port->interfno = interfno;
+
+ grub_serial_config_defaults (port);
+ grub_serial_register (port);
+
+ port->usbdev->config[port->configno].interf[port->interfno].detach_hook
+ = grub_usbserial_detach;
+ port->usbdev->config[port->configno].interf[port->interfno].detach_data
+ = port;
+
+ return 1;
+}
#include <grub/misc.h>
#include <grub/mm.h>
#include <grub/usb.h>
+#include <grub/usbserial.h>
enum
{
return GRUB_ERR_NONE;
}
-static void
-ftdi_fini (struct grub_serial_port *port)
-{
- port->usbdev->config[port->configno].interf[port->interfno].detach_hook = 0;
- port->usbdev->config[port->configno].interf[port->interfno].attached = 0;
-}
-
static struct grub_serial_driver grub_ftdi_driver =
{
.configure = ftdi_hw_configure,
.fetch = ftdi_hw_fetch,
.put = ftdi_hw_put,
- .fini = ftdi_fini
+ .fini = grub_usbserial_fini
};
static const struct
{0x0403, 0x6001} /* QEMU virtual USBserial. */
};
-static int ftdinum = 0;
-
-static void
-ftdi_detach (grub_usb_device_t usbdev, int configno, int interfno)
-{
- static struct grub_serial_port *port;
- port = usbdev->config[configno].interf[interfno].detach_data;
-
- grub_serial_unregister (port);
-}
-
-static int
-grub_ftdi_attach_real (grub_usb_device_t usbdev, int configno, int interfno)
-{
- static struct grub_serial_port *port;
- int j;
- struct grub_usb_desc_if *interf;
-
- interf = usbdev->config[configno].interf[interfno].descif;
-
- port = grub_malloc (sizeof (*port));
- if (!port)
- {
- grub_print_error ();
- return 0;
- }
-
- port->name = grub_xasprintf ("ftdi%d", ftdinum++);
- if (!port->name)
- {
- grub_free (port);
- grub_print_error ();
- return 0;
- }
-
- port->usbdev = usbdev;
- port->driver = &grub_ftdi_driver;
- for (j = 0; j < interf->endpointcnt; j++)
- {
- struct grub_usb_desc_endp *endp;
- endp = &usbdev->config[0].interf[interfno].descendp[j];
-
- if ((endp->endp_addr & 128) && (endp->attrib & 3) == 2)
- {
- /* Bulk IN endpoint. */
- port->in_endp = endp;
- }
- else if (!(endp->endp_addr & 128) && (endp->attrib & 3) == 2)
- {
- /* Bulk OUT endpoint. */
- port->out_endp = endp;
- }
- }
- if (!port->out_endp || !port->in_endp)
- {
- grub_free (port->name);
- grub_free (port);
- return 0;
- }
-
- port->configno = configno;
- port->interfno = interfno;
-
- grub_serial_config_defaults (port);
- grub_serial_register (port);
-
- port->usbdev->config[port->configno].interf[port->interfno].detach_hook
- = ftdi_detach;
- port->usbdev->config[port->configno].interf[port->interfno].detach_data
- = port;
-
- return 1;
-}
-
static int
grub_ftdi_attach (grub_usb_device_t usbdev, int configno, int interfno)
{
if (j == ARRAY_SIZE (products))
return 0;
- return grub_ftdi_attach_real (usbdev, configno, interfno);
+ return grub_usbserial_attach (usbdev, configno, interfno,
+ &grub_ftdi_driver);
}
-struct grub_usb_attach_desc attach_hook =
+static struct grub_usb_attach_desc attach_hook =
{
.class = 0xff,
.hook = grub_ftdi_attach
--- /dev/null
+/*
+ * 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/serial.h>
+#include <grub/types.h>
+#include <grub/dl.h>
+#include <grub/misc.h>
+#include <grub/mm.h>
+#include <grub/usb.h>
+#include <grub/usbserial.h>
+
+enum
+ {
+ GRUB_FTDI_MODEM_CTRL = 0x01,
+ GRUB_FTDI_FLOW_CTRL = 0x02,
+ GRUB_FTDI_SPEED_CTRL = 0x03,
+ GRUB_FTDI_DATA_CTRL = 0x04
+ };
+
+#define GRUB_FTDI_MODEM_CTRL_DTRRTS 3
+#define GRUB_FTDI_FLOW_CTRL_DTRRTS 3
+
+/* Convert speed to divisor. */
+static grub_uint32_t
+get_divisor (unsigned int speed)
+{
+ unsigned int i;
+
+ /* The structure for speed vs. divisor. */
+ struct divisor
+ {
+ unsigned int speed;
+ grub_uint32_t div;
+ };
+
+ /* The table which lists common configurations. */
+ /* Computed with a division formula with 3MHz as base frequency. */
+ static struct divisor divisor_tab[] =
+ {
+ { 2400, 0x04e2 },
+ { 4800, 0x0271 },
+ { 9600, 0x4138 },
+ { 19200, 0x809c },
+ { 38400, 0xc04e },
+ { 57600, 0xc034 },
+ { 115200, 0x001a }
+ };
+
+ /* Set the baud rate. */
+ for (i = 0; i < ARRAY_SIZE (divisor_tab); i++)
+ if (divisor_tab[i].speed == speed)
+ return divisor_tab[i].div;
+ return 0;
+}
+
+static void
+real_config (struct grub_serial_port *port)
+{
+ grub_uint32_t divisor;
+ const grub_uint16_t parities[] = {
+ [GRUB_SERIAL_PARITY_NONE] = 0x0000,
+ [GRUB_SERIAL_PARITY_ODD] = 0x0100,
+ [GRUB_SERIAL_PARITY_EVEN] = 0x0200
+ };
+ const grub_uint16_t stop_bits[] = {
+ [GRUB_SERIAL_STOP_BITS_1] = 0x0000,
+ [GRUB_SERIAL_STOP_BITS_2] = 0x1000,
+ };
+
+ // if (port->configured)
+ return;
+
+ grub_usb_control_msg (port->usbdev, GRUB_USB_REQTYPE_VENDOR_OUT,
+ GRUB_FTDI_MODEM_CTRL,
+ GRUB_FTDI_MODEM_CTRL_DTRRTS, 0, 0, 0);
+
+ grub_usb_control_msg (port->usbdev, GRUB_USB_REQTYPE_VENDOR_OUT,
+ GRUB_FTDI_FLOW_CTRL,
+ GRUB_FTDI_FLOW_CTRL_DTRRTS, 0, 0, 0);
+
+ divisor = get_divisor (port->config.speed);
+ grub_usb_control_msg (port->usbdev, GRUB_USB_REQTYPE_VENDOR_OUT,
+ GRUB_FTDI_SPEED_CTRL,
+ divisor & 0xffff, divisor >> 16, 0, 0);
+
+ grub_usb_control_msg (port->usbdev, GRUB_USB_REQTYPE_VENDOR_OUT,
+ GRUB_FTDI_DATA_CTRL,
+ parities[port->config.parity]
+ | stop_bits[port->config.stop_bits]
+ | port->config.word_len, 0, 0, 0);
+
+ port->configured = 1;
+}
+
+/* Fetch a key. */
+static int
+pl2303_hw_fetch (struct grub_serial_port *port)
+{
+ char cc;
+ grub_usb_err_t err;
+
+ real_config (port);
+
+ err = grub_usb_bulk_read (port->usbdev, port->in_endp->endp_addr, 1, &cc);
+ if (err != GRUB_USB_ERR_NONE)
+ return -1;
+
+ return cc;
+}
+
+/* Put a character. */
+static void
+pl2303_hw_put (struct grub_serial_port *port, const int c)
+{
+ char cc = c;
+
+ real_config (port);
+
+ grub_usb_bulk_write (port->usbdev, port->out_endp->endp_addr, 1, &cc);
+}
+
+static grub_err_t
+pl2303_hw_configure (struct grub_serial_port *port,
+ struct grub_serial_config *config)
+{
+ grub_uint16_t divisor;
+
+ divisor = get_divisor (config->speed);
+ if (divisor == 0)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "bad speed");
+
+ if (config->parity != GRUB_SERIAL_PARITY_NONE
+ && config->parity != GRUB_SERIAL_PARITY_ODD
+ && config->parity != GRUB_SERIAL_PARITY_EVEN)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "unsupported parity");
+
+ if (config->stop_bits != GRUB_SERIAL_STOP_BITS_1
+ && config->stop_bits != GRUB_SERIAL_STOP_BITS_2)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "unsupported stop bits");
+
+ if (config->word_len < 5 || config->word_len > 8)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "unsupported word length");
+
+ port->config = *config;
+ port->configured = 0;
+
+ return GRUB_ERR_NONE;
+}
+
+static struct grub_serial_driver grub_pl2303_driver =
+ {
+ .configure = pl2303_hw_configure,
+ .fetch = pl2303_hw_fetch,
+ .put = pl2303_hw_put,
+ .fini = grub_usbserial_fini
+ };
+
+static const struct
+{
+ grub_uint16_t vendor, product;
+} products[] =
+ {
+ {0x067b, 0x2303}
+ };
+
+static int
+grub_pl2303_attach (grub_usb_device_t usbdev, int configno, int interfno)
+{
+ unsigned j;
+
+ for (j = 0; j < ARRAY_SIZE (products); j++)
+ if (usbdev->descdev.vendorid == products[j].vendor
+ && usbdev->descdev.prodid == products[j].product)
+ break;
+ if (j == ARRAY_SIZE (products))
+ return 0;
+
+ return grub_usbserial_attach (usbdev, configno, interfno,
+ &grub_pl2303_driver);
+}
+
+static struct grub_usb_attach_desc attach_hook =
+{
+ .class = 0xff,
+ .hook = grub_pl2303_attach
+};
+
+GRUB_MOD_INIT(usbserial_pl2303)
+{
+ grub_usb_register_attach_hook_class (&attach_hook);
+}
+
+GRUB_MOD_FINI(usbserial_pl2303)
+{
+ grub_serial_unregister_driver (&grub_pl2303_driver);
+ grub_usb_unregister_attach_hook_class (&attach_hook);
+}
usb_mod_CFLAGS = $(COMMON_CFLAGS)
usb_mod_LDFLAGS = $(COMMON_LDFLAGS)
+# For serial.mod.
+pkglib_MODULES += usbserial_common.mod
+usbserial_common_mod_SOURCES = bus/usb/serial/common.c
+usbserial_common_mod_CFLAGS = $(COMMON_CFLAGS)
+usbserial_common_mod_LDFLAGS = $(COMMON_LDFLAGS)
+
+# For serial.mod.
+pkglib_MODULES += usbserial_pl2303.mod
+usbserial_pl2303_mod_SOURCES = bus/usb/serial/pl2303.c
+usbserial_pl2303_mod_CFLAGS = $(COMMON_CFLAGS)
+usbserial_pl2303_mod_LDFLAGS = $(COMMON_LDFLAGS)
+
# For serial.mod.
pkglib_MODULES += usbserial_ftdi.mod
usbserial_ftdi_mod_SOURCES = bus/usb/serial/ftdi.c
--- /dev/null
+/* serial.h - serial device interface */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * 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
+ * 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_USBSERIAL_HEADER
+#define GRUB_USBSERIAL_HEADER 1
+
+void grub_usbserial_fini (struct grub_serial_port *port);
+
+void grub_usbserial_detach (grub_usb_device_t usbdev, int configno,
+ int interfno);
+
+int
+grub_usbserial_attach (grub_usb_device_t usbdev, int configno, int interfno,
+ struct grub_serial_driver *driver);
+#endif
projects / thirdparty / grub.git / commitdiff
