1 files changed, 123 insertions, 0 deletions
diff --git a/include/grub/serial.h b/include/grub/serial.h
new file mode 100644
index 0000000..9540bee
--- /dev/null
+++ b/include/grub/serial.h
@@ -0,0 +1,123 @@
+/* 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_SERIAL_HEADER
+#define GRUB_SERIAL_HEADER	1
+
+#include <grub/types.h>
+#include <grub/cpu/io.h>
+#include <grub/usb.h>
+#include <grub/list.h>
+#include <grub/term.h>
+
+struct grub_serial_port;
+struct grub_serial_config;
+
+struct grub_serial_driver
+{
+  grub_err_t (*configure) (struct grub_serial_port *port,
+			   struct grub_serial_config *config);
+  int (*fetch) (struct grub_serial_port *port);
+  void (*put) (struct grub_serial_port *port, const int c);
+  void (*fini) (struct grub_serial_port *port);
+};
+
+/* The type of parity.  */
+typedef enum
+  {
+    GRUB_SERIAL_PARITY_NONE,
+    GRUB_SERIAL_PARITY_ODD,
+    GRUB_SERIAL_PARITY_EVEN,
+  } grub_serial_parity_t;
+
+typedef enum
+  {
+    GRUB_SERIAL_STOP_BITS_1,
+    GRUB_SERIAL_STOP_BITS_2,
+  } grub_serial_stop_bits_t;
+
+struct grub_serial_config
+{
+  unsigned speed;
+  int word_len;
+  grub_serial_parity_t parity;
+  grub_serial_stop_bits_t stop_bits;
+};
+
+struct grub_serial_port
+{
+  struct grub_serial_port *next;
+  char *name;
+  struct grub_serial_driver *driver;
+  struct grub_serial_config config;
+  int configured;
+  /* This should be void *data but since serial is useful as an early console
+     when malloc isn't available it's a union.
+   */
+  union
+  {
+    struct
+    {
+      grub_port_t port;
+      int broken;
+    };
+    struct
+    {
+      grub_usb_device_t usbdev;
+      int configno;
+      int interfno;
+      char buf[64];
+      int bufstart, bufend;
+      struct grub_usb_desc_endp *in_endp;
+      struct grub_usb_desc_endp *out_endp;
+    };
+  };
+  grub_term_output_t term_out;
+  grub_term_input_t term_in;
+};
+
+grub_err_t EXPORT_FUNC(grub_serial_register) (struct grub_serial_port *port);
+
+void EXPORT_FUNC(grub_serial_unregister) (struct grub_serial_port *port);
+
+  /* Set default settings.  */
+static inline grub_err_t
+grub_serial_config_defaults (struct grub_serial_port *port)
+{
+  struct grub_serial_config config =
+    {
+#ifdef GRUB_MACHINE_MIPS_YEELOONG
+      .speed = 115200,
+#else
+      .speed = 9600,
+#endif
+      .word_len = 8,
+      .parity = GRUB_SERIAL_PARITY_NONE,
+      .stop_bits = GRUB_SERIAL_STOP_BITS_1
+    };
+
+  return port->driver->configure (port, &config);
+}
+
+void grub_ns8250_init (void);
+char *grub_serial_ns8250_add_port (grub_port_t port);
+extern struct grub_serial_driver grub_ns8250_driver;
+void EXPORT_FUNC(grub_serial_unregister_driver) (struct grub_serial_driver *driver);
+
+#endif