Initial gitification of petitboot

Start a git repo for petitboot, sources from Ben Herrenschmidt
and Jeremy Kerr.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

16 files changed, 2440 insertions, 0 deletions

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..b0a92ea
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,15 @@
+CC=gcc
+TWIN_CFLAGS=$(shell pkg-config --cflags libtwin)
+TWIN_LDFLAGS=$(shell pkg-config --libs libtwin)
+
+LDFLAGS = $(TWIN_LDFLAGS)
+CFLAGS = -O0 -ggdb -Wall $(TWIN_CFLAGS)
+
+OBJFILES = petitboot.o devices.o
+
+petitboot: $(OBJFILES)
+	$(CC) $(LDFLAGS) -o $@ $^
+
+clean:
+	rm -f petitboot
+	rm -f *.o
diff --git a/artwork/background.png b/artwork/background.png
new file mode 100644
index 0000000..f6ea9da
--- /dev/null
+++ b/artwork/background.png
diff --git a/artwork/cdrom.png b/artwork/cdrom.png
new file mode 100644
index 0000000..8b3eeb6
--- /dev/null
+++ b/artwork/cdrom.png
diff --git a/artwork/cursor b/artwork/cursor
new file mode 100644
index 0000000..fac3b0c
--- /dev/null
+++ b/artwork/cursor
diff --git a/artwork/hdd.png b/artwork/hdd.png
new file mode 100644
index 0000000..2b1594c
--- /dev/null
+++ b/artwork/hdd.png
diff --git a/artwork/usbpen.png b/artwork/usbpen.png
new file mode 100644
index 0000000..53a365e
--- /dev/null
+++ b/artwork/usbpen.png
diff --git a/devices.c b/devices.c
new file mode 100644
index 0000000..ac93287
--- /dev/null
+++ b/devices.c
@@ -0,0 +1,272 @@
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <asm/byteorder.h>
+
+#include <libtwin/twin_png.h>
+#include "petitboot.h"
+#include "devices/message.h"
+
+#define PBOOT_DEVICE_SOCKET	"/var/tmp/petitboot-dev"
+#define PBOOT_DEFAULT_ICON	"artwork/usbpen.png"
+
+static const char *default_icon = PBOOT_DEFAULT_ICON;
+
+struct discovery_context {
+	/* nothing at present */
+	int pad;
+} _ctx;
+
+struct device_context {
+	struct discovery_context *discovery_ctx;
+	uint8_t action;
+	int device_idx;
+};
+
+static twin_pixmap_t *get_icon(const char *filename)
+{
+	/* todo: cache */
+	twin_pixmap_t *icon;
+
+	if (!filename)
+		filename = default_icon;
+
+retry:
+	LOG("loading icon %s ... ", filename);
+	icon = twin_png_to_pixmap(filename, TWIN_ARGB32);
+	LOG("%s\n", icon ? "ok" : "failed");
+
+	if (!icon && filename != default_icon) {
+		filename = default_icon;
+		LOG("reverting to default icon %s\n", filename);
+		goto retry;
+	}
+
+	return icon;
+}
+
+#define MAX_LEN 4096
+static char *read_string(int fd)
+{
+	int len;
+	uint32_t len_buf;
+	char *str, *pos;
+
+	if (read(fd, &len_buf, sizeof(len_buf)) != sizeof(len_buf)) {
+		perror("read");
+		return NULL;
+	}
+
+	len = __be32_to_cpu(len_buf);
+	if (len + 1 > MAX_LEN) {
+		/* todo: truncate instead */
+		return NULL;
+	}
+
+	pos = str = malloc(len + 1);
+
+	while (len) {
+		int rc = read(fd, pos, len);
+		if (rc <= 0) {
+			free(str);
+			LOG("read failed: %s\n", strerror(errno));
+			return NULL;
+		}
+		pos += rc;
+		len -= rc;
+	}
+	*pos = '\0';
+
+	return str;
+}
+
+static int _read_strings(int fd, void *ptr, int n_strings)
+{
+	char **strings = ptr;
+	int i, ret = TWIN_TRUE;
+
+	for (i = 0; i < n_strings; i++) {
+		strings[i] = read_string(fd);
+		if (!strings[i]) {
+			ret = TWIN_FALSE;
+			break;
+		}
+	}
+
+	if (!ret)
+		while (i-- > 0) {
+			free(strings[i]);
+			strings[i] = NULL;
+		}
+
+	return ret;
+}
+
+static void _free_strings(void *ptr, int n_strings)
+{
+	char **strings = ptr;
+	int i;
+
+	for (i = 0; i < n_strings; i++)
+		free(strings[i]);
+
+}
+
+#define n_strings(x) (sizeof((x)) / sizeof(char *))
+#define read_strings(f,x) _read_strings((f), &(x), n_strings(x))
+#define free_strings(x) _free_strings(&(x), n_strings(x))
+
+static int read_action(int fd, uint8_t *action)
+{
+	return read(fd, action, sizeof(*action)) != sizeof(*action);
+}
+
+static int read_device(int fd, struct device_context *dev_ctx)
+{
+	/* name, description, icon_file */
+	struct device dev;
+	twin_pixmap_t *icon;
+	int index = -1;
+
+	if (!read_strings(fd, dev))
+		return TWIN_FALSE;
+
+	LOG("got device: '%s'\n", dev.name);
+
+	icon = get_icon(dev.icon_file);
+
+	if (!icon)
+		goto out;
+
+	index = dev_ctx->device_idx = pboot_add_device(dev.id, dev.name, icon);
+
+out:
+	free_strings(dev);
+
+	return index != -1;
+}
+
+static int read_option(int fd, struct device_context *dev_ctx)
+{
+	struct boot_option opt;
+	twin_pixmap_t *icon;
+	int index = -1;
+
+	if (!read_strings(fd, opt))
+		return TWIN_FALSE;
+
+	LOG("got option: '%s'\n", opt.name);
+	icon = get_icon(opt.icon_file);
+
+	if (icon)
+		index = pboot_add_option(dev_ctx->device_idx, opt.name,
+				opt.description, icon);
+
+	free_strings(opt);
+
+	return index != -1;
+}
+
+static twin_bool_t pboot_proc_client_sock(int sock, twin_file_op_t ops,
+		void *closure)
+{
+	struct device_context *dev_ctx = closure;
+	uint8_t action;
+
+	if (read_action(sock, &action))
+		goto out_err;
+
+	if (action == DEV_ACTION_ADD_DEVICE) {
+		if (!read_device(sock, dev_ctx))
+			goto out_err;
+
+	} else if (action == DEV_ACTION_ADD_OPTION) {
+		if (dev_ctx->device_idx == -1) {
+			LOG("option, but no device has been sent?\n");
+			goto out_err;
+		}
+
+		if (!read_option(sock, dev_ctx))
+			goto out_err;
+
+	} else if (action == DEV_ACTION_REMOVE_DEVICE) {
+		char *dev_id = read_string(sock);
+		if (!dev_id)
+			goto out_err;
+		
+		LOG("remove device %s\n", dev_id);
+		pboot_remove_device(dev_id);
+
+	} else {
+		LOG("unsupported action %d\n", action);
+		goto out_err;
+	}
+
+	return TWIN_TRUE;
+
+out_err:
+	close(sock);
+	return TWIN_FALSE;
+}
+
+static twin_bool_t pboot_proc_server_sock(int sock, twin_file_op_t ops,
+		void *closure)
+{
+	int fd;
+	struct discovery_context *disc_ctx = closure;
+	struct device_context *dev_ctx;
+
+	fd = accept(sock, NULL, 0);
+	if (fd < 0) {
+		LOG("accept failed: %s", strerror(errno));
+		return TWIN_FALSE;
+	}
+
+	dev_ctx = malloc(sizeof(*dev_ctx));
+	dev_ctx->discovery_ctx = disc_ctx;
+	dev_ctx->device_idx = -1;
+	dev_ctx->action = 0xff;
+
+	twin_set_file(pboot_proc_client_sock, fd, TWIN_READ, dev_ctx);
+
+	return TWIN_TRUE;
+}
+
+int pboot_start_device_discovery(void)
+{
+	int sock;
+	struct sockaddr_un addr;
+
+	unlink(PBOOT_DEVICE_SOCKET);
+
+	sock = socket(PF_UNIX, SOCK_STREAM, 0);
+	if (sock < 0) {
+		perror("socket");
+		return TWIN_FALSE;
+	}
+
+	addr.sun_family = AF_UNIX;
+	strcpy(addr.sun_path, PBOOT_DEVICE_SOCKET);
+
+	if (bind(sock, (struct sockaddr *)&addr, sizeof(addr))) {
+		LOG("can't bind to %s: %s", addr.sun_path, strerror(errno));
+		return TWIN_FALSE;
+	}
+
+	if (listen(sock, 1)) {
+		LOG("can't listen on socket %s: %s",
+				addr.sun_path, strerror(errno));
+		return TWIN_FALSE;
+	}
+
+	LOG("listening on %s\n", addr.sun_path);
+
+	twin_set_file(pboot_proc_server_sock, sock, TWIN_READ, &_ctx);
+
+	return TWIN_TRUE;
+}
+
diff --git a/devices/Makefile b/devices/Makefile
new file mode 100644
index 0000000..ec9d87c
--- /dev/null
+++ b/devices/Makefile
@@ -0,0 +1,9 @@
+
+CC=gcc
+CFLAGS=-Wall -g -O2
+
+parsers = native-parser.o
+
+all: udev-helper
+
+udev-helper: udev-helper.o params.o $(parsers)
diff --git a/devices/message.h b/devices/message.h
new file mode 100644
index 0000000..2e8bbba
--- /dev/null
+++ b/devices/message.h
@@ -0,0 +1,26 @@
+
+enum device_action {
+	DEV_ACTION_ADD_DEVICE = 0,
+	DEV_ACTION_ADD_OPTION = 1,
+	DEV_ACTION_REMOVE_DEVICE = 2,
+	DEV_ACTION_REMOVE_OPTION = 3
+};
+
+struct device {
+	char *id;
+	char *name;
+	char *description;
+	char *icon_file;
+};
+
+struct boot_option {
+	char *id;
+	char *name;
+	char *description;
+	char *icon_file;
+	char *boot_image_file;
+	char *initrd_file;
+	char *boot_args;
+};
+
+
diff --git a/devices/native-parser.c b/devices/native-parser.c
new file mode 100644
index 0000000..f47fdca
--- /dev/null
+++ b/devices/native-parser.c
@@ -0,0 +1,136 @@
+
+#include "udev-helper.h"
+#include "params.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+const char *conf_filename = "/boot/petitboot.conf";
+
+static struct boot_option *cur_opt;
+static struct device *dev;
+static const char *mountpoint;
+int device_added;
+
+static char *prepend_mountpoint(const char *path)
+{
+	char *full_path;
+
+	full_path = malloc(strlen(path) + strlen(mountpoint) + 2);
+
+	strcpy(full_path, mountpoint);
+	if (path[0] != '/')
+		strcat(full_path, "/");
+	strcat(full_path, path);
+
+	return full_path;
+}
+
+int check_and_add_device(struct device *dev)
+{
+	if (!dev->icon_file)
+		dev->icon_file = strdup(generic_icon_file(guess_device_type()));
+
+	return !add_device(dev);
+}
+
+static int section(char *section_name)
+{
+	if (!device_added++ && !check_and_add_device(dev))
+		return 0;
+
+	if (cur_opt) {
+		add_boot_option(cur_opt);
+		free_boot_option(cur_opt);
+	}
+
+	cur_opt = malloc(sizeof(*cur_opt));
+	memset(cur_opt, 0, sizeof(*cur_opt));
+	return 1;
+}
+
+
+static void set_boot_option_parameter(struct boot_option *opt,
+		const char *name, const char *value)
+{
+	if (streq(name, "name"))
+		opt->name = strdup(value);
+
+	else if (streq(name, "description"))
+		opt->description = strdup(value);
+
+	else if (streq(name, "image"))
+		opt->boot_image_file = prepend_mountpoint(value);
+
+	else if (streq(name, "icon"))
+		opt->icon_file = prepend_mountpoint(value);
+
+	else if (streq(name, "initrd"))
+		opt->initrd_file = prepend_mountpoint(value);
+
+	else if (streq(name, "args"))
+		opt->boot_args = strdup(value);
+
+	else
+		fprintf(stderr, "Unknown parameter %s\n", name);
+}
+
+static void set_device_parameter(struct device *dev,
+		const char *name, const char *value)
+{
+	if (streq(name, "name"))
+		dev->name = strdup(value);
+
+	else if (streq(name, "description"))
+		dev->description = strdup(value);
+
+	else if (streq(name, "icon"))
+		dev->icon_file = prepend_mountpoint(value);
+}
+
+static int parameter(char *param_name, char *param_value)
+{
+	if (cur_opt)
+		set_boot_option_parameter(cur_opt, param_name, param_value);
+	else
+		set_device_parameter(dev, param_name, param_value);
+	return 1;
+}
+
+
+int parse(const char *devicepath, const char *_mountpoint)
+{
+	char *filepath;
+
+	mountpoint = _mountpoint;
+
+	filepath = prepend_mountpoint(conf_filename);
+
+	cur_opt = NULL;
+	dev = malloc(sizeof(*dev));
+	memset(dev, 0, sizeof(*dev));
+	dev->id = strdup(devicepath);
+
+	pm_process(filepath, section, parameter);
+
+	if (cur_opt) {
+		add_boot_option(cur_opt);
+		free_boot_option(cur_opt);
+	}
+
+	cur_opt = NULL;
+
+	free(filepath);
+
+	return 1;
+}
+
+struct parser native_parser = {
+	.name = "native petitboot parser",
+	.priority = 100,
+	.parse	  = parse
+};
+
+
+
diff --git a/devices/params.c b/devices/params.c
new file mode 100644
index 0000000..76a1451
--- /dev/null
+++ b/devices/params.c
@@ -0,0 +1,595 @@
+/* This modules is based on the params.c module from Samba, written by Karl Auer
+   and much modifed by Christopher Hertel. */
+
+/*
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <errno.h>
+
+#include "params.h"
+
+#define new_array(type, num) ((type *)_new_array(sizeof(type), (num)))
+#define realloc_array(ptr, type, num) \
+	((type *)_realloc_array((ptr), sizeof(type), (num)))
+
+#define rprintf(x, ...) do { fprintf(stderr, ##__VA_ARGS__);	\
+				fprintf(stderr, "\n"); } while (0)
+#define rsyserr(x, y, ...) do { fprintf(stderr, ##__VA_ARGS__);	\
+				fprintf(stderr, "\n"); } while (0)
+
+#define MALLOC_MAX 0x40000000
+#define False 0
+#define True 1
+
+void *_new_array(unsigned int size, unsigned long num)
+{
+	if (num >= MALLOC_MAX/size)
+		return NULL;
+	return malloc(size * num);
+}
+
+void *_realloc_array(void *ptr, unsigned int size, unsigned long num)
+{
+	if (num >= MALLOC_MAX/size)
+		return NULL;
+	/* No realloc should need this, but just in case... */
+	if (!ptr)
+		return malloc(size * num);
+	return realloc(ptr, size * num);
+}
+
+
+/* -------------------------------------------------------------------------- **
+ *
+ * Module name: params
+ *
+ * -------------------------------------------------------------------------- **
+ *
+ *  This module performs lexical analysis and initial parsing of a
+ *  Windows-like parameter file.  It recognizes and handles four token
+ *  types:  section-name, parameter-name, parameter-value, and
+ *  end-of-file.  Comments and line continuation are handled
+ *  internally.
+ *
+ *  The entry point to the module is function pm_process().  This
+ *  function opens the source file, calls the Parse() function to parse
+ *  the input, and then closes the file when either the EOF is reached
+ *  or a fatal error is encountered.
+ *
+ *  A sample parameter file might look like this:
+ *
+ *  [section one]
+ *  parameter one = value string
+ *  parameter two = another value
+ *  [section two]
+ *  new parameter = some value or t'other
+ *
+ *  The parameter file is divided into sections by section headers:
+ *  section names enclosed in square brackets (eg. [section one]).
+ *  Each section contains parameter lines, each of which consist of a
+ *  parameter name and value delimited by an equal sign.  Roughly, the
+ *  syntax is:
+ *
+ *    <file>            :==  { <section> } EOF
+ *
+ *    <section>         :==  <section header> { <parameter line> }
+ *
+ *    <section header>  :==  '[' NAME ']'
+ *
+ *    <parameter line>  :==  NAME '=' VALUE '\n'
+ *
+ *  Blank lines and comment lines are ignored.  Comment lines are lines
+ *  beginning with either a semicolon (';') or a pound sign ('#').
+ *
+ *  All whitespace in section names and parameter names is compressed
+ *  to single spaces.  Leading and trailing whitespace is stipped from
+ *  both names and values.
+ *
+ *  Only the first equals sign in a parameter line is significant.
+ *  Parameter values may contain equals signs, square brackets and
+ *  semicolons.  Internal whitespace is retained in parameter values,
+ *  with the exception of the '\r' character, which is stripped for
+ *  historic reasons.  Parameter names may not start with a left square
+ *  bracket, an equal sign, a pound sign, or a semicolon, because these
+ *  are used to identify other tokens.
+ *
+ * -------------------------------------------------------------------------- **
+ */
+
+/* -------------------------------------------------------------------------- **
+ * Constants...
+ */
+
+#define BUFR_INC 1024
+
+
+/* -------------------------------------------------------------------------- **
+ * Variables...
+ *
+ *  bufr        - pointer to a global buffer.  This is probably a kludge,
+ *                but it was the nicest kludge I could think of (for now).
+ *  bSize       - The size of the global buffer <bufr>.
+ */
+
+static char *bufr  = NULL;
+static int   bSize = 0;
+
+/* -------------------------------------------------------------------------- **
+ * Functions...
+ */
+
+static int EatWhitespace( FILE *InFile )
+  /* ------------------------------------------------------------------------ **
+   * Scan past whitespace (see ctype(3C)) and return the first non-whitespace
+   * character, or newline, or EOF.
+   *
+   *  Input:  InFile  - Input source.
+   *
+   *  Output: The next non-whitespace character in the input stream.
+   *
+   *  Notes:  Because the config files use a line-oriented grammar, we
+   *          explicitly exclude the newline character from the list of
+   *          whitespace characters.
+   *        - Note that both EOF (-1) and the nul character ('\0') are
+   *          considered end-of-file markers.
+   *
+   * ------------------------------------------------------------------------ **
+   */
+  {
+  int c;
+
+  for( c = getc( InFile ); isspace( c ) && ('\n' != c); c = getc( InFile ) )
+    ;
+  return( c );
+  } /* EatWhitespace */
+
+static int EatComment( FILE *InFile )
+  /* ------------------------------------------------------------------------ **
+   * Scan to the end of a comment.
+   *
+   *  Input:  InFile  - Input source.
+   *
+   *  Output: The character that marks the end of the comment.  Normally,
+   *          this will be a newline, but it *might* be an EOF.
+   *
+   *  Notes:  Because the config files use a line-oriented grammar, we
+   *          explicitly exclude the newline character from the list of
+   *          whitespace characters.
+   *        - Note that both EOF (-1) and the nul character ('\0') are
+   *          considered end-of-file markers.
+   *
+   * ------------------------------------------------------------------------ **
+   */
+  {
+  int c;
+
+  for( c = getc( InFile ); ('\n'!=c) && (EOF!=c) && (c>0); c = getc( InFile ) )
+    ;
+  return( c );
+  } /* EatComment */
+
+static int Continuation( char *line, int pos )
+  /* ------------------------------------------------------------------------ **
+   * Scan backards within a string to discover if the last non-whitespace
+   * character is a line-continuation character ('\\').
+   *
+   *  Input:  line  - A pointer to a buffer containing the string to be
+   *                  scanned.
+   *          pos   - This is taken to be the offset of the end of the
+   *                  string.  This position is *not* scanned.
+   *
+   *  Output: The offset of the '\\' character if it was found, or -1 to
+   *          indicate that it was not.
+   *
+   * ------------------------------------------------------------------------ **
+   */
+  {
+  pos--;
+  while( (pos >= 0) && isspace(((unsigned char *)line)[pos]) )
+     pos--;
+
+  return( ((pos >= 0) && ('\\' == line[pos])) ? pos : -1 );
+  } /* Continuation */
+
+
+static BOOL Section( FILE *InFile, BOOL (*sfunc)(char *) )
+  /* ------------------------------------------------------------------------ **
+   * Scan a section name, and pass the name to function sfunc().
+   *
+   *  Input:  InFile  - Input source.
+   *          sfunc   - Pointer to the function to be called if the section
+   *                    name is successfully read.
+   *
+   *  Output: True if the section name was read and True was returned from
+   *          <sfunc>.  False if <sfunc> failed or if a lexical error was
+   *          encountered.
+   *
+   * ------------------------------------------------------------------------ **
+   */
+  {
+  int   c;
+  int   i;
+  int   end;
+  char *func  = "params.c:Section() -";
+
+  i = 0;      /* <i> is the offset of the next free byte in bufr[] and  */
+  end = 0;    /* <end> is the current "end of string" offset.  In most  */
+              /* cases these will be the same, but if the last          */
+              /* character written to bufr[] is a space, then <end>     */
+              /* will be one less than <i>.                             */
+
+  c = EatWhitespace( InFile );    /* We've already got the '['.  Scan */
+                                  /* past initial white space.        */
+
+  while( (EOF != c) && (c > 0) )
+    {
+
+    /* Check that the buffer is big enough for the next character. */
+    if( i > (bSize - 2) )
+      {
+      bSize += BUFR_INC;
+      bufr   = realloc_array( bufr, char, bSize );
+      if( NULL == bufr )
+        {
+        rprintf(FERROR, "%s Memory re-allocation failure.", func);
+        return( False );
+        }
+      }
+
+    /* Handle a single character. */
+    switch( c )
+      {
+      case ']':                       /* Found the closing bracket.         */
+        bufr[end] = '\0';
+        if( 0 == end )                  /* Don't allow an empty name.       */
+          {
+          rprintf(FERROR, "%s Empty section name in configuration file.\n", func );
+          return( False );
+          }
+        if( !sfunc( bufr ) )            /* Got a valid name.  Deal with it. */
+          return( False );
+        (void)EatComment( InFile );     /* Finish off the line.             */
+        return( True );
+
+      case '\n':                      /* Got newline before closing ']'.    */
+        i = Continuation( bufr, i );    /* Check for line continuation.     */
+        if( i < 0 )
+          {
+          bufr[end] = '\0';
+          rprintf(FERROR, "%s Badly formed line in configuration file: %s\n",
+                   func, bufr );
+          return( False );
+          }
+        end = ( (i > 0) && (' ' == bufr[i - 1]) ) ? (i - 1) : (i);
+        c = getc( InFile );             /* Continue with next line.         */
+        break;
+
+      default:                        /* All else are a valid name chars.   */
+        if( isspace( c ) )              /* One space per whitespace region. */
+          {
+          bufr[end] = ' ';
+          i = end + 1;
+          c = EatWhitespace( InFile );
+          }
+        else                            /* All others copy verbatim.        */
+          {
+          bufr[i++] = c;
+          end = i;
+          c = getc( InFile );
+          }
+      }
+    }
+
+  /* We arrive here if we've met the EOF before the closing bracket. */
+  rprintf(FERROR, "%s Unexpected EOF in the configuration file: %s\n", func, bufr );
+  return( False );
+  } /* Section */
+
+static BOOL Parameter( FILE *InFile, BOOL (*pfunc)(char *, char *), int c )
+  /* ------------------------------------------------------------------------ **
+   * Scan a parameter name and value, and pass these two fields to pfunc().
+   *
+   *  Input:  InFile  - The input source.
+   *          pfunc   - A pointer to the function that will be called to
+   *                    process the parameter, once it has been scanned.
+   *          c       - The first character of the parameter name, which
+   *                    would have been read by Parse().  Unlike a comment
+   *                    line or a section header, there is no lead-in
+   *                    character that can be discarded.
+   *
+   *  Output: True if the parameter name and value were scanned and processed
+   *          successfully, else False.
+   *
+   *  Notes:  This function is in two parts.  The first loop scans the
+   *          parameter name.  Internal whitespace is compressed, and an
+   *          equal sign (=) terminates the token.  Leading and trailing
+   *          whitespace is discarded.  The second loop scans the parameter
+   *          value.  When both have been successfully identified, they are
+   *          passed to pfunc() for processing.
+   *
+   * ------------------------------------------------------------------------ **
+   */
+  {
+  int   i       = 0;    /* Position within bufr. */
+  int   end     = 0;    /* bufr[end] is current end-of-string. */
+  int   vstart  = 0;    /* Starting position of the parameter value. */
+  char *func    = "params.c:Parameter() -";
+
+  /* Read the parameter name. */
+  while( 0 == vstart )  /* Loop until we've found the start of the value. */
+    {
+
+    if( i > (bSize - 2) )       /* Ensure there's space for next char.    */
+      {
+      bSize += BUFR_INC;
+      bufr   = realloc_array( bufr, char, bSize );
+      if( NULL == bufr )
+        {
+        rprintf(FERROR, "%s Memory re-allocation failure.", func) ;
+        return( False );
+        }
+      }
+
+    switch( c )
+      {
+      case '=':                 /* Equal sign marks end of param name. */
+        if( 0 == end )              /* Don't allow an empty name.      */
+          {
+          rprintf(FERROR, "%s Invalid parameter name in config. file.\n", func );
+          return( False );
+          }
+        bufr[end++] = '\0';         /* Mark end of string & advance.   */
+        i       = end;              /* New string starts here.         */
+        vstart  = end;              /* New string is parameter value.  */
+        bufr[i] = '\0';             /* New string is nul, for now.     */
+        break;
+
+      case '\n':                /* Find continuation char, else error. */
+        i = Continuation( bufr, i );
+        if( i < 0 )
+          {
+          bufr[end] = '\0';
+          rprintf(FERROR, "%s Ignoring badly formed line in configuration file: %s\n",
+                   func, bufr );
+          return( True );
+          }
+        end = ( (i > 0) && (' ' == bufr[i - 1]) ) ? (i - 1) : (i);
+        c = getc( InFile );       /* Read past eoln.                   */
+        break;
+
+      case '\0':                /* Shouldn't have EOF within param name. */
+      case EOF:
+        bufr[i] = '\0';
+        rprintf(FERROR, "%s Unexpected end-of-file at: %s\n", func, bufr );
+        return( True );
+
+      default:
+        if( isspace( c ) )     /* One ' ' per whitespace region.       */
+          {
+          bufr[end] = ' ';
+          i = end + 1;
+          c = EatWhitespace( InFile );
+          }
+        else                   /* All others verbatim.                 */
+          {
+          bufr[i++] = c;
+          end = i;
+          c = getc( InFile );
+          }
+      }
+    }
+
+  /* Now parse the value. */
+  c = EatWhitespace( InFile );  /* Again, trim leading whitespace. */
+  while( (EOF !=c) && (c > 0) )
+    {
+
+    if( i > (bSize - 2) )       /* Make sure there's enough room. */
+      {
+      bSize += BUFR_INC;
+      bufr   = realloc_array( bufr, char, bSize );
+      if( NULL == bufr )
+        {
+        rprintf(FERROR, "%s Memory re-allocation failure.", func) ;
+        return( False );
+        }
+      }
+
+    switch( c )
+      {
+      case '\r':              /* Explicitly remove '\r' because the older */
+        c = getc( InFile );   /* version called fgets_slash() which also  */
+        break;                /* removes them.                            */
+
+      case '\n':              /* Marks end of value unless there's a '\'. */
+        i = Continuation( bufr, i );
+        if( i < 0 )
+          c = 0;
+        else
+          {
+          for( end = i; (end >= 0) && isspace(((unsigned char *) bufr)[end]); end-- )
+            ;
+          c = getc( InFile );
+          }
+        break;
+
+      default:               /* All others verbatim.  Note that spaces do */
+        bufr[i++] = c;       /* not advance <end>.  This allows trimming  */
+        if( !isspace( c ) )  /* of whitespace at the end of the line.     */
+          end = i;
+        c = getc( InFile );
+        break;
+      }
+    }
+  bufr[end] = '\0';          /* End of value. */
+
+  return( pfunc( bufr, &bufr[vstart] ) );   /* Pass name & value to pfunc().  */
+  } /* Parameter */
+
+static BOOL Parse( FILE *InFile,
+                   BOOL (*sfunc)(char *),
+                   BOOL (*pfunc)(char *, char *) )
+  /* ------------------------------------------------------------------------ **
+   * Scan & parse the input.
+   *
+   *  Input:  InFile  - Input source.
+   *          sfunc   - Function to be called when a section name is scanned.
+   *                    See Section().
+   *          pfunc   - Function to be called when a parameter is scanned.
+   *                    See Parameter().
+   *
+   *  Output: True if the file was successfully scanned, else False.
+   *
+   *  Notes:  The input can be viewed in terms of 'lines'.  There are four
+   *          types of lines:
+   *            Blank      - May contain whitespace, otherwise empty.
+   *            Comment    - First non-whitespace character is a ';' or '#'.
+   *                         The remainder of the line is ignored.
+   *            Section    - First non-whitespace character is a '['.
+   *            Parameter  - The default case.
+   * 
+   * ------------------------------------------------------------------------ **
+   */
+  {
+  int    c;
+
+  c = EatWhitespace( InFile );
+  while( (EOF != c) && (c > 0) )
+    {
+    switch( c )
+      {
+      case '\n':                        /* Blank line. */
+        c = EatWhitespace( InFile );
+        break;
+
+      case ';':                         /* Comment line. */
+      case '#':
+        c = EatComment( InFile );
+        break;
+
+      case '[':                         /* Section Header. */
+	      if (!sfunc) return True;
+	      if( !Section( InFile, sfunc ) )
+		      return( False );
+	      c = EatWhitespace( InFile );
+	      break;
+
+      case '\\':                        /* Bogus backslash. */
+        c = EatWhitespace( InFile );
+        break;
+
+      default:                          /* Parameter line. */
+        if( !Parameter( InFile, pfunc, c ) )
+          return( False );
+        c = EatWhitespace( InFile );
+        break;
+      }
+    }
+  return( True );
+  } /* Parse */
+
+static FILE *OpenConfFile( char *FileName )
+  /* ------------------------------------------------------------------------ **
+   * Open a configuration file.
+   *
+   *  Input:  FileName  - The pathname of the config file to be opened.
+   *
+   *  Output: A pointer of type (FILE *) to the opened file, or NULL if the
+   *          file could not be opened.
+   *
+   * ------------------------------------------------------------------------ **
+   */
+  {
+  FILE *OpenedFile;
+  char *func = "params.c:OpenConfFile() -";
+
+  if( NULL == FileName || 0 == *FileName )
+    {
+    rprintf(FERROR,"%s No configuration filename specified.\n", func);
+    return( NULL );
+    }
+
+  OpenedFile = fopen( FileName, "r" );
+  if( NULL == OpenedFile )
+    {
+    rsyserr(FERROR, errno, "unable to open configuration file \"%s\"",
+	    FileName);
+    }
+
+  return( OpenedFile );
+  } /* OpenConfFile */
+
+BOOL pm_process( char *FileName,
+                 BOOL (*sfunc)(char *),
+                 BOOL (*pfunc)(char *, char *) )
+  /* ------------------------------------------------------------------------ **
+   * Process the named parameter file.
+   *
+   *  Input:  FileName  - The pathname of the parameter file to be opened.
+   *          sfunc     - A pointer to a function that will be called when
+   *                      a section name is discovered.
+   *          pfunc     - A pointer to a function that will be called when
+   *                      a parameter name and value are discovered.
+   *
+   *  Output: TRUE if the file was successfully parsed, else FALSE.
+   *
+   * ------------------------------------------------------------------------ **
+   */
+  {
+  int   result;
+  FILE *InFile;
+  char *func = "params.c:pm_process() -";
+
+  InFile = OpenConfFile( FileName );          /* Open the config file. */
+  if( NULL == InFile )
+    return( False );
+
+  if( NULL != bufr )                          /* If we already have a buffer */
+    result = Parse( InFile, sfunc, pfunc );   /* (recursive call), then just */
+                                              /* use it.                     */
+
+  else                                        /* If we don't have a buffer   */
+    {                                         /* allocate one, then parse,   */
+    bSize = BUFR_INC;                         /* then free.                  */
+    bufr = new_array( char, bSize );
+    if( NULL == bufr )
+      {
+      rprintf(FERROR,"%s memory allocation failure.\n", func);
+      fclose(InFile);
+      return( False );
+      }
+    result = Parse( InFile, sfunc, pfunc );
+    free( bufr );
+    bufr  = NULL;
+    bSize = 0;
+    }
+
+  fclose(InFile);
+
+  if( !result )                               /* Generic failure. */
+    {
+    rprintf(FERROR,"%s Failed.  Error returned from params.c:parse().\n", func);
+    return( False );
+    }
+
+  return( True );                             /* Generic success. */
+  } /* pm_process */
+
+/* -------------------------------------------------------------------------- */
+
diff --git a/devices/params.h b/devices/params.h
new file mode 100644
index 0000000..02a39c9
--- /dev/null
+++ b/devices/params.h
@@ -0,0 +1,6 @@
+
+#define BOOL int
+
+BOOL pm_process( char *FileName,
+                 BOOL (*sfunc)(char *),
+                 BOOL (*pfunc)(char *, char *) );
diff --git a/devices/udev-helper.c b/devices/udev-helper.c
new file mode 100644
index 0000000..f936086
--- /dev/null
+++ b/devices/udev-helper.c
@@ -0,0 +1,430 @@
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <sys/wait.h>
+#include <sys/un.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <string.h>
+#include <asm/byteorder.h>
+
+#include "udev-helper.h"
+
+#define parser_dir "."
+
+#define tmp_dir "/var/tmp/petitboot"
+#define socket_file "/var/tmp/petitboot-dev"
+#define mount_bin "/bin/mount"
+#define umount_bin "/bin/umount"
+
+extern struct parser native_parser;
+static FILE *logf;
+static int sock;
+
+/* array of parsers, ordered by priority */
+static struct parser *parsers[] = {
+	&native_parser,
+	NULL
+};
+
+#define log(...) fprintf(logf, __VA_ARGS__)
+
+static void iterate_parsers(const char *devpath, const char *mountpoint)
+{
+	int i;
+
+	log("trying parsers for %s@%s\n", devpath, mountpoint);
+
+	for (i = 0; parsers[i]; i++) {
+		log("\ttrying parser '%s'\n", parsers[i]->name);
+		/* just use a dummy device path for now */
+		if (parsers[i]->parse(devpath, mountpoint))
+			return;
+	}
+	log("\tno boot_options found\n");
+}
+
+static void print_boot_option(const struct boot_option *opt)
+{
+	log("\tname: %s\n", opt->name);
+	log("\tdescription: %s\n", opt->description);
+	log("\tboot_image: %s\n", opt->boot_image_file);
+	log("\tboot_args: %s\n", opt->boot_args);
+
+}
+
+static void print_device(const struct device *dev)
+{
+	log("\tid: %s\n", dev->name);
+	log("\tname: %s\n", dev->name);
+	log("\tdescription: %s\n", dev->description);
+	log("\tboot_image: %s\n", dev->icon_file);
+}
+
+
+void free_device(struct device *dev)
+{
+	if (!dev)
+		return;
+	if (dev->id)
+		free(dev->id);
+	if (dev->name)
+		free(dev->name);
+	if (dev->description)
+		free(dev->description);
+	if (dev->icon_file)
+		free(dev->icon_file);
+	free(dev);
+}
+
+void free_boot_option(struct boot_option *opt)
+{
+	if (!opt)
+		return;
+	if (opt->name)
+		free(opt->name);
+	if (opt->description)
+		free(opt->description);
+	if (opt->icon_file)
+		free(opt->icon_file);
+	if (opt->boot_image_file)
+		free(opt->boot_image_file);
+	if (opt->initrd_file)
+		free(opt->initrd_file);
+	if (opt->boot_args)
+		free(opt->boot_args);
+	free(opt);
+}
+
+static int write_action(int fd, enum device_action action)
+{
+	uint8_t action_buf = action;
+	return write(fd, &action_buf, sizeof(action_buf)) != sizeof(action_buf);
+}
+
+static int write_string(int fd, const char *str)
+{
+	int len, pos = 0;
+	uint32_t len_buf;
+
+	if (!str) {
+		len_buf = 0;
+		if (write(fd, &len_buf, sizeof(len_buf)) != sizeof(len_buf)) {
+			log("write failed: %s\n", strerror(errno));
+			return -1;
+		}
+		return 0;
+	}
+
+	len = strlen(str);
+	if (len > (1ull << (sizeof(len_buf) * 8 - 1))) {
+		log("string too large\n");
+		return -1;
+	}
+
+	len_buf = __cpu_to_be32(len);
+	if (write(fd, &len_buf, sizeof(len_buf)) != sizeof(len_buf)) {
+		log("write failed: %s\n", strerror(errno));
+		return -1;
+	}
+
+	while (pos < len) {
+		int rc = write(fd, str, len - pos);
+		if (rc <= 0) {
+			log("write failed: %s\n", strerror(errno));
+			return -1;
+		}
+		pos += rc;
+		str += rc;
+	}
+
+	return 0;
+}
+
+int add_device(const struct device *dev)
+{
+	int rc;
+
+	log("device added:\n");
+	print_device(dev);
+	rc = write_action(sock, DEV_ACTION_ADD_DEVICE) ||
+		write_string(sock, dev->id) ||
+		write_string(sock, dev->name) ||
+		write_string(sock, dev->description) ||
+		write_string(sock, dev->icon_file);
+
+	if (rc)
+		log("error writing device %s to socket\n", dev->name);
+
+	return rc;
+}
+
+int add_boot_option(const struct boot_option *opt)
+{
+	int rc;
+
+	log("boot option added:\n");
+	print_boot_option(opt);
+
+	rc = write_action(sock, DEV_ACTION_ADD_OPTION) ||
+		write_string(sock, opt->id) ||
+		write_string(sock, opt->name) ||
+		write_string(sock, opt->description) ||
+		write_string(sock, opt->icon_file) ||
+		write_string(sock, opt->boot_image_file) ||
+		write_string(sock, opt->initrd_file) ||
+		write_string(sock, opt->boot_args);
+
+	if (rc)
+		log("error writing boot option %s to socket\n", opt->name);
+
+	return rc;
+}
+
+int remove_device(const char *dev_path)
+{
+	return write_action(sock, DEV_ACTION_REMOVE_DEVICE) ||
+		write_string(sock, dev_path);
+}
+
+int connect_to_socket()
+{
+#if 1
+	int fd;
+	struct sockaddr_un addr;
+
+	fd = socket(PF_UNIX, SOCK_STREAM, 0);
+	if (fd == -1) {
+		log("can't create socket: %s\n", strerror(errno));
+		return -1;
+	}
+
+	addr.sun_family = AF_UNIX;
+	strcpy(addr.sun_path, socket_file);
+
+	if (connect(fd, (struct sockaddr *)&addr, sizeof(addr))) {
+		log("can't connect to %s: %s\n",
+				addr.sun_path, strerror(errno));
+		return -1;
+	}
+	sock = fd;
+
+	return 0;
+#else
+	int fd;
+	fd = open("./debug_socket", O_WRONLY | O_CREAT, 0640);
+	if (fd < 0) {
+		log("can't create output file: %s\n", strerror(errno));
+		return -1;
+	}
+	sock = fd;
+	return 0;
+#endif
+}
+
+#define template "mnt-XXXXXX"
+
+static int mount_device(const char *dev_path, char *mount_path)
+{
+	char *dir;
+	int pid, status, rc = -1;
+
+	/* create a unique mountpoint */
+	dir = malloc(strlen(tmp_dir) + 2 + strlen(template));
+	sprintf(dir, "%s/%s", tmp_dir, template);
+
+	if (!mkdtemp(dir)) {
+		log("failed to create temporary directory in %s: %s",
+				tmp_dir, strerror(errno));
+		goto out;
+	}
+
+	pid = fork();
+	if (pid == -1) {
+		log("%s: fork failed: %s\n", __FUNCTION__, strerror(errno));
+		goto out;
+	}
+
+	if (pid == 0) {
+		execl(mount_bin, mount_bin, dev_path, dir, "-o", "ro", NULL);
+		exit(EXIT_FAILURE);
+	}
+
+	if (waitpid(pid, &status, 0) == -1) {
+		log("%s: waitpid failed: %s\n", __FUNCTION__, strerror(errno));
+		goto out;
+	}
+
+	if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
+		strcpy(mount_path, dir);
+		rc = 0;
+	}
+
+out:
+	free(dir);
+	return rc;
+}
+
+static int unmount_device(const char *dev_path)
+{
+	int pid, status, rc;
+
+	pid = fork();
+
+	if (pid == -1) {
+		log("%s: fork failed: %s\n", __FUNCTION__, strerror(errno));
+		return -1;
+	}
+
+	if (pid == 0) {
+		execl(umount_bin, umount_bin, dev_path, NULL);
+		exit(EXIT_FAILURE);
+	}
+
+	if (waitpid(pid, &status, 0) == -1) {
+		log("%s: waitpid failed: %s\n", __FUNCTION__, strerror(errno));
+		return -1;
+	}
+
+	rc = !WIFEXITED(status) || WEXITSTATUS(status) != 0;
+
+	return rc;
+}
+
+const char *generic_icon_file(enum generic_icon_type type)
+{
+	switch (type) {
+	case ICON_TYPE_DISK:
+		return "artwork/hdd.png";
+	case ICON_TYPE_USB:
+		return "artwork/usbpen.png";
+	case ICON_TYPE_OPTICAL:
+		return "artwork/cdrom.png";
+	case ICON_TYPE_NETWORK:
+	case ICON_TYPE_UNKNOWN:
+		break;
+	}
+	return "artwork/hdd.png";
+}
+
+static const struct device fake_boot_devices[] =
+{
+	{
+		.id		= "fakeDisk0",
+		.name		= "Hard Disk",
+		.icon_file	= "artwork/hdd.png",
+	},
+	{
+		.id		= "fakeDisk1",
+		.name		= "PinkCat Linux CD",
+		.icon_file	= "artwork/cdrom.png",
+	}
+};
+
+static const struct boot_option fake_boot_options[] =
+{
+	{
+		.id		= "fakeBoot0",
+		.name		= "Bloobuntu Linux",
+		.description	= "Boot Bloobuntu Linux",
+		.icon_file	= "artwork/hdd.png",
+	},
+	{
+		.id		= "fakeBoot1",
+		.name		= "Pendora Gore 6",
+		.description	= "Boot Pendora Gora 6",
+		.icon_file	= "artwork/hdd.png",
+	},
+	{
+		.id		= "fakeBoot2",
+		.name		= "Genfoo Minux",
+		.description	= "Boot Genfoo Minux",
+		.icon_file	= "artwork/hdd.png",
+	},
+	{
+		.id		= "fakeBoot3",
+		.name		= "PinkCat Linux",
+		.description	= "Install PinkCat Linux - Graphical install",
+		.icon_file	= "artwork/cdrom.png",
+	},
+};
+
+enum generic_icon_type guess_device_type(void)
+{
+	const char *bus = getenv("ID_BUS");
+	if (streq(bus, "usb"))
+		return ICON_TYPE_USB;
+	if (streq(bus, "ata") || streq(bus, "scsi"))
+		return ICON_TYPE_DISK;
+	return ICON_TYPE_UNKNOWN;
+}
+
+int main(int argc, char **argv)
+{
+	char mountpoint[PATH_MAX];
+	char *dev_path, *action;
+	int rc;
+
+	/*if (fork())
+		return EXIT_SUCCESS;
+		*/
+	action = getenv("ACTION");
+
+	logf = stdout;
+	rc = EXIT_SUCCESS;
+
+	if (!action) {
+		log("missing environment?\n");
+		return EXIT_FAILURE;
+	}
+
+	if (connect_to_socket())
+		return EXIT_FAILURE;
+
+	if (streq(action, "fake")) {
+		log("fake mode");
+
+		add_device(&fake_boot_devices[0]);
+		add_boot_option(&fake_boot_options[0]);
+		add_boot_option(&fake_boot_options[1]);
+		add_boot_option(&fake_boot_options[2]);
+		add_device(&fake_boot_devices[1]);
+		add_boot_option(&fake_boot_options[3]);
+
+		return EXIT_SUCCESS;
+	}
+
+	dev_path = getenv("DEVNAME");
+	if (!dev_path) {
+		log("missing environment?\n");
+		return EXIT_FAILURE;
+	}
+
+	if (streq(action, "add")) {
+		if (mount_device(dev_path, mountpoint)) {
+			log("failed to mount %s\n", dev_path);
+			return EXIT_FAILURE;
+		}
+
+		log("mounted %s at %s\n", dev_path, mountpoint);
+
+		iterate_parsers(dev_path, mountpoint);
+
+	} else if (streq(action, "remove")) {
+		log("%s removed\n", dev_path);
+
+		remove_device(dev_path);
+
+		unmount_device(dev_path);
+
+	} else {
+		log("invalid action '%s'\n", action);
+		rc = EXIT_FAILURE;
+	}
+	return rc;
+}
diff --git a/devices/udev-helper.h b/devices/udev-helper.h
new file mode 100644
index 0000000..ea5400c
--- /dev/null
+++ b/devices/udev-helper.h
@@ -0,0 +1,27 @@
+
+#include "message.h"
+
+int add_device(const struct device *dev);
+
+int add_boot_option(const struct boot_option *opt);
+void free_boot_option(struct boot_option *opt);
+
+struct parser {
+	char *name;
+	int priority;
+	int (*parse)(const char *devicepath, const char *mountpoint);
+	struct parser *next;
+};
+
+enum generic_icon_type {
+	ICON_TYPE_DISK,
+	ICON_TYPE_USB,
+	ICON_TYPE_OPTICAL,
+	ICON_TYPE_NETWORK,
+	ICON_TYPE_UNKNOWN
+};
+
+enum generic_icon_type guess_device_type(void);
+const char *generic_icon_file(enum generic_icon_type type);
+
+#define streq(a,b) (!strcasecmp((a),(b)))
diff --git a/petitboot.c b/petitboot.c
new file mode 100644
index 0000000..e69353e
--- /dev/null
+++ b/petitboot.c
@@ -0,0 +1,909 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <unistd.h>
+#include <syscall.h>
+#include <assert.h>
+
+#include <linux/input.h>
+
+#include <libtwin/twin.h>
+#include <libtwin/twin_fbdev.h>
+#include <libtwin/twin_x11.h>
+#include <libtwin/twin_linux_mouse.h>
+#include <libtwin/twin_png.h>
+
+#include "petitboot.h"
+
+#define _USE_X11
+
+static twin_fbdev_t *pboot_fbdev;
+static twin_x11_t *pboot_x11;
+static twin_screen_t *pboot_screen;
+
+#define PBOOT_LEFT_PANE_SIZE		200
+#define PBOOT_LEFT_PANE_COLOR		0x80000000
+#define PBOOT_LEFT_LINE_COLOR		0xff000000
+
+#define PBOOT_LEFT_FOCUS_WIDTH		80
+#define PBOOT_LEFT_FOCUS_HEIGHT		80
+#define PBOOT_LEFT_FOCUS_XOFF		60
+#define PBOOT_LEFT_FOCUS_YOFF		60
+#define PBOOT_LEFT_FOCUS_XRAD		(6 * TWIN_FIXED_ONE)
+#define PBOOT_LEFT_FOCUS_YRAD		(6 * TWIN_FIXED_ONE)
+
+#define PBOOT_RIGHT_FOCUS_XOFF		20
+#define PBOOT_RIGHT_FOCUS_YOFF		60
+#define PBOOT_RIGHT_FOCUS_HEIGHT	80
+#define PBOOT_RIGHT_FOCUS_XRAD		(6 * TWIN_FIXED_ONE)
+#define PBOOT_RIGHT_FOCUS_YRAD		(6 * TWIN_FIXED_ONE)
+
+#define PBOOT_LEFT_ICON_WIDTH		64
+#define PBOOT_LEFT_ICON_HEIGHT		64
+#define PBOOT_LEFT_ICON_XOFF		70
+#define PBOOT_LEFT_ICON_YOFF		70
+#define PBOOT_LEFT_ICON_STRIDE		100
+
+#define PBOOT_RIGHT_OPTION_LMARGIN	30
+#define PBOOT_RIGHT_OPTION_RMARGIN	30
+#define PBOOT_RIGHT_OPTION_TMARGIN	70
+#define PBOOT_RIGHT_OPTION_HEIGHT	64
+#define PBOOT_RIGHT_OPTION_STRIDE	100
+#define PBOOT_RIGHT_TITLE_TEXT_SIZE	(30 * TWIN_FIXED_ONE)
+#define PBOOT_RIGHT_SUBTITLE_TEXT_SIZE	(18 * TWIN_FIXED_ONE)
+#define PBOOT_RIGHT_TITLE_XOFFSET	80
+#define PBOOT_RIGHT_TITLE_YOFFSET	30
+#define PBOOT_RIGHT_SUBTITLE_XOFFSET	200
+#define PBOOT_RIGHT_SUBTITLE_YOFFSET	50
+#define PBOOT_RIGHT_BADGE_XOFFSET	2
+#define PBOOT_RIGHT_BADGE_YOFFSET	0
+
+
+#define PBOOT_RIGHT_TITLE_COLOR		0xff000000
+#define PBOOT_RIGHT_SUBTITLE_COLOR	0xff400000
+
+#define PBOOT_FOCUS_COLOR		0x10404040
+
+
+typedef struct _pboot_option pboot_option_t;
+typedef struct _pboot_device pboot_device_t;
+
+struct _pboot_option
+{
+	char		*title;
+	char		*subtitle;
+	twin_pixmap_t	*badge;
+	twin_pixmap_t	*cache;
+	twin_rect_t	box;
+};
+
+struct _pboot_device
+{
+	char			*id;
+	twin_pixmap_t		*badge;
+	twin_rect_t		box;
+	int			option_count;
+	pboot_option_t		options[PBOOT_MAX_OPTION];
+};
+
+static twin_pixmap_t	*pboot_cursor;
+static int		pboot_cursor_hx;
+static int		pboot_cursor_hy;
+
+static pboot_device_t	*pboot_devices[PBOOT_MAX_DEV];
+static int		pboot_dev_count;
+static int		pboot_dev_sel = -1;
+static int		pboot_focus_lpane = 1;
+
+typedef struct _pboot_lpane {
+	twin_window_t	*window;
+	twin_rect_t	focus_box;
+	int		focus_start;
+	int		focus_target;
+	int		focus_curindex;
+	int		mouse_target;
+} pboot_lpane_t;
+
+typedef struct _pboot_rpane {
+	twin_window_t	*window;
+	twin_rect_t	focus_box;
+	int		focus_start;
+	int		focus_target;
+	int		focus_curindex;
+	int		mouse_target;
+} pboot_rpane_t;
+
+static pboot_lpane_t	*pboot_lpane;
+static pboot_rpane_t	*pboot_rpane;
+
+/* XXX move to twin */
+static inline twin_bool_t twin_rect_intersect(twin_rect_t r1,
+					      twin_rect_t r2)
+{
+	return !(r1.left > r2.right ||
+		 r1.right < r2.left ||
+		 r1.top > r2.bottom ||
+		 r1.bottom < r2.top);
+}
+
+static void pboot_draw_option_cache(pboot_device_t *dev, pboot_option_t *opt,
+				    int index)
+{
+	twin_pixmap_t	*px;
+	twin_path_t	*path;
+	twin_fixed_t	tx, ty;
+
+	/* Create pixmap */
+	px = twin_pixmap_create(TWIN_ARGB32, opt->box.right - opt->box.left,
+				 opt->box.bottom - opt->box.top);
+	assert(px);
+	opt->cache = px;
+
+	/* Fill background */
+	twin_fill(px, 0x00000000, TWIN_SOURCE, 0, 0, px->width, px->height);
+
+	/* Allocate a path for drawing */
+	path = twin_path_create();
+	assert(path);
+
+#if 0
+	/* TEST - Bounding rectangle */
+	twin_path_rectangle(path, 0, 0,
+			    twin_int_to_fixed(px->width),
+			    twin_int_to_fixed(px->height));
+	twin_paint_path(px, PBOOT_RIGHT_TITLE_COLOR, path);
+	twin_path_empty(path);
+	twin_fill(px, 0x00000000, TWIN_SOURCE, 2, 2,
+		  px->width - 3, px->height - 3);
+#endif
+
+	/* Draw texts */
+	twin_path_set_font_size(path, PBOOT_RIGHT_TITLE_TEXT_SIZE);
+	twin_path_set_font_style(path, TWIN_TEXT_UNHINTED);
+	tx = twin_int_to_fixed(PBOOT_RIGHT_TITLE_XOFFSET);
+	ty = twin_int_to_fixed(PBOOT_RIGHT_TITLE_YOFFSET);
+	twin_path_move (path, tx, ty);
+	twin_path_utf8 (path, opt->title);
+	twin_paint_path (px, PBOOT_RIGHT_TITLE_COLOR, path);
+	twin_path_empty (path);
+
+	if (opt->subtitle) {
+		twin_path_set_font_size(path, PBOOT_RIGHT_SUBTITLE_TEXT_SIZE);
+		twin_path_set_font_style(path, TWIN_TEXT_UNHINTED);
+		tx = twin_int_to_fixed(PBOOT_RIGHT_SUBTITLE_XOFFSET);
+		ty = twin_int_to_fixed(PBOOT_RIGHT_SUBTITLE_YOFFSET);
+		twin_path_move (path, tx, ty);
+		twin_path_utf8 (path, opt->subtitle);
+		twin_paint_path (px, PBOOT_RIGHT_SUBTITLE_COLOR, path);
+		twin_path_empty (path);
+	}
+
+	if (opt->badge) {
+		twin_operand_t	src;
+
+		src.source_kind = TWIN_PIXMAP;
+		src.u.pixmap = opt->badge;
+
+		twin_composite(px, PBOOT_RIGHT_BADGE_XOFFSET,
+			       PBOOT_RIGHT_BADGE_YOFFSET,
+			       &src, 0, 0, NULL, 0, 0, TWIN_OVER,
+			       opt->badge->width, opt->badge->height);
+	}
+
+
+	/* Destroy path */
+	twin_path_destroy(path);
+}
+
+static void pboot_rpane_draw(twin_window_t *window)
+{
+	twin_pixmap_t	*px = window->pixmap;
+	pboot_rpane_t	*rpane = window->client_data;
+	pboot_device_t	*dev;
+	twin_path_t	*path;
+	twin_fixed_t	x, y, w, h;
+	int		i;
+
+	/* Fill background */
+	twin_fill(px, 0x00000000, TWIN_SOURCE, 0, 0, px->width, px->height);
+
+	/* Nothing to draw, return */
+	if (pboot_dev_sel < 0)
+		return;
+
+	/* Create a path for use later */
+	path = twin_path_create();
+	assert(path);
+
+	/* Draw focus box */
+	if (rpane->focus_curindex >= 0 &&
+	    twin_rect_intersect(rpane->focus_box, px->clip)) {
+		x = twin_int_to_fixed(rpane->focus_box.left + 2);
+		y = twin_int_to_fixed(rpane->focus_box.top + 2);
+		w = twin_int_to_fixed(rpane->focus_box.right -
+				      rpane->focus_box.left - 4);
+		h = twin_int_to_fixed(rpane->focus_box.bottom -
+				      rpane->focus_box.top - 4);
+		twin_path_rounded_rectangle(path, x, y, w, h,
+					    PBOOT_RIGHT_FOCUS_XRAD,
+					    PBOOT_RIGHT_FOCUS_YRAD);
+		if (!pboot_focus_lpane)
+			twin_paint_path(px, PBOOT_FOCUS_COLOR, path);
+		else
+			twin_paint_stroke(px, PBOOT_FOCUS_COLOR, path,
+					  4 * TWIN_FIXED_ONE);
+	}
+
+	/* Get device and iterate through options */
+	dev = pboot_devices[pboot_dev_sel];
+	for (i = 0; i < dev->option_count; i++) {
+		pboot_option_t	*opt = &dev->options[i];
+		twin_operand_t	src;
+
+		if (opt->title == NULL)
+			continue;
+		if (!twin_rect_intersect(opt->box, px->clip))
+			continue;
+		if (opt->cache == NULL)
+			pboot_draw_option_cache(dev, opt, i);
+
+		src.source_kind = TWIN_PIXMAP;
+		src.u.pixmap = opt->cache;
+
+		twin_composite(px, opt->box.left, opt->box.top,
+			       &src, 0, 0, NULL, 0, 0, TWIN_OVER,
+			       opt->box.right - opt->box.left,
+			       opt->box.bottom - opt->box.top);
+	}
+
+	/* Destroy path */
+	twin_path_destroy(path);
+}
+
+static twin_time_t pboot_rfocus_timeout (twin_time_t now, void *closure)
+{
+	int dir = 1, dist, pos;
+	const int accel[11] = { 7, 4, 2, 1, 1, 1, 1, 2, 3, 4, 5 };
+
+	dist = abs(pboot_rpane->focus_target - pboot_rpane->focus_start);
+	dir = dist > 5 ? 5 : dist;
+	pos = pboot_rpane->focus_target - (int)pboot_rpane->focus_box.top;
+	if (pos == 0) {
+		return -1;
+	}
+	if (pos < 0) {
+		dir = -dir;
+		pos = -pos;
+	}
+	twin_window_damage(pboot_rpane->window,
+			   pboot_rpane->focus_box.left,
+			   pboot_rpane->focus_box.top,
+			   pboot_rpane->focus_box.right,
+			   pboot_rpane->focus_box.bottom);
+
+	pboot_rpane->focus_box.top += dir;
+	pboot_rpane->focus_box.bottom += dir;
+
+	twin_window_damage(pboot_rpane->window,
+			   pboot_rpane->focus_box.left,
+			   pboot_rpane->focus_box.top,
+			   pboot_rpane->focus_box.right,
+			   pboot_rpane->focus_box.bottom);
+
+	twin_window_queue_paint(pboot_rpane->window);
+
+	return accel[(pos * 10) / dist];
+}
+
+static void pboot_set_rfocus(int index)
+{
+	pboot_device_t	*dev;
+
+	if (pboot_dev_sel < 0 || pboot_dev_sel >= pboot_dev_count)
+		return;
+	dev = pboot_devices[pboot_dev_sel];
+	if (index < 0 || index >= dev->option_count)
+		return;
+
+	pboot_rpane->focus_start = pboot_rpane->focus_box.top;
+	pboot_rpane->focus_target = PBOOT_RIGHT_FOCUS_YOFF +
+		PBOOT_RIGHT_OPTION_STRIDE * index;
+	pboot_rpane->focus_curindex = index;
+
+	twin_set_timeout(pboot_rfocus_timeout, 0, NULL);
+}
+
+static void pboot_select_rpane(void)
+{
+	if (pboot_focus_lpane == 0)
+		return;
+	pboot_focus_lpane = 0;
+
+	twin_screen_set_active(pboot_screen, pboot_rpane->window->pixmap);
+
+	twin_window_damage(pboot_lpane->window,
+			   pboot_lpane->focus_box.left,
+			   pboot_lpane->focus_box.top,
+			   pboot_lpane->focus_box.right,
+			   pboot_lpane->focus_box.bottom);
+
+	twin_window_damage(pboot_rpane->window,
+			   pboot_rpane->focus_box.left,
+			   pboot_rpane->focus_box.top,
+			   pboot_rpane->focus_box.right,
+			   pboot_rpane->focus_box.bottom);
+
+	twin_window_queue_paint(pboot_lpane->window);
+	twin_window_queue_paint(pboot_rpane->window);
+
+	pboot_set_rfocus(0);
+}
+
+static void pboot_select_lpane(void)
+{
+	if (pboot_focus_lpane == 1)
+		return;
+	pboot_focus_lpane = 1;
+
+	twin_screen_set_active(pboot_screen, pboot_lpane->window->pixmap);
+
+	twin_window_damage(pboot_lpane->window,
+			   pboot_lpane->focus_box.left,
+			   pboot_lpane->focus_box.top,
+			   pboot_lpane->focus_box.right,
+			   pboot_lpane->focus_box.bottom);
+
+	twin_window_damage(pboot_rpane->window,
+			   pboot_rpane->focus_box.left,
+			   pboot_rpane->focus_box.top,
+			   pboot_rpane->focus_box.right,
+			   pboot_rpane->focus_box.bottom);
+
+	twin_window_queue_paint(pboot_lpane->window);
+	twin_window_queue_paint(pboot_rpane->window);
+}
+
+static void pboot_rpane_mousetrack(twin_coord_t x, twin_coord_t y)
+{
+	pboot_device_t	*dev;
+	pboot_option_t	*opt;
+	int		candidate = -1;
+
+	if (pboot_dev_sel < 0 || pboot_dev_sel >= pboot_dev_count)
+		return;
+	dev = pboot_devices[pboot_dev_sel];
+
+	if (y < PBOOT_RIGHT_OPTION_TMARGIN)
+		goto miss;
+	candidate = (y - PBOOT_RIGHT_OPTION_TMARGIN) /
+		PBOOT_RIGHT_OPTION_STRIDE;
+	if (candidate >= dev->option_count) {
+		candidate = -1;
+		goto miss;
+	}
+	if (candidate == pboot_rpane->mouse_target)
+		return;
+	opt = &dev->options[candidate];
+	if (x < opt->box.left || x > opt->box.right ||
+	    y < opt->box.top || y > opt->box.bottom) {
+		candidate = -1;
+		goto miss;
+	}
+
+	/* Ok, so now, we know the mouse hit an icon that wasn't the same
+	 * as the previous one, we trigger a focus change
+	 */
+	pboot_set_rfocus(candidate);
+
+ miss:
+	pboot_rpane->mouse_target = candidate;
+}
+
+static twin_bool_t pboot_rpane_event (twin_window_t	    *window,
+				      twin_event_t	    *event)
+{
+	/* filter out all mouse events */
+	switch(event->kind) {
+	case TwinEventEnter:
+	case TwinEventMotion:
+	case TwinEventLeave:
+		pboot_select_rpane();
+		pboot_rpane_mousetrack(event->u.pointer.x, event->u.pointer.y);
+		return TWIN_TRUE;
+	case TwinEventButtonDown:
+	case TwinEventButtonUp:
+		return TWIN_TRUE;
+	case TwinEventKeyDown:
+		switch(event->u.key.key) {
+		case KEY_UP:
+			pboot_set_rfocus(pboot_rpane->focus_curindex - 1);
+			return TWIN_TRUE;
+		case KEY_DOWN:
+			pboot_set_rfocus(pboot_rpane->focus_curindex + 1);
+			return TWIN_TRUE;
+		case KEY_LEFT:
+			pboot_select_lpane();
+			return TWIN_TRUE;
+		default:
+			break;
+		}
+		break;
+	default:
+		break;
+	}
+	return TWIN_FALSE;
+}
+
+
+int pboot_add_option(int devindex, const char *title,
+			    const char *subtitle, twin_pixmap_t *badge)
+{
+	pboot_device_t	*dev;
+	pboot_option_t	*opt;
+	twin_coord_t	width;
+	int		index;
+
+	if (devindex < 0 || devindex >= pboot_dev_count)
+		return -1;
+	dev = pboot_devices[devindex];
+
+	if (dev->option_count >= PBOOT_MAX_OPTION)
+		return -1;
+	index = dev->option_count++;
+	opt = &dev->options[index];
+
+	opt->title = malloc(strlen(title) + 1);
+	strcpy(opt->title, title);
+
+	if (subtitle) {
+		opt->subtitle = malloc(strlen(subtitle) + 1);
+		strcpy(opt->subtitle, subtitle);
+	} else
+		opt->subtitle = NULL;
+
+	opt->badge = badge;
+	opt->cache = NULL;
+
+	width = pboot_rpane->window->pixmap->width -
+		(PBOOT_RIGHT_OPTION_LMARGIN + PBOOT_RIGHT_OPTION_RMARGIN);
+
+	opt->box.left = PBOOT_RIGHT_OPTION_LMARGIN;
+	opt->box.right = opt->box.left + width;
+	opt->box.top = PBOOT_RIGHT_OPTION_TMARGIN +
+		index * PBOOT_RIGHT_OPTION_STRIDE;
+	opt->box.bottom = opt->box.top + PBOOT_RIGHT_OPTION_HEIGHT;
+
+	return index;
+}
+
+
+static void pboot_set_device_select(int sel)
+{
+	LOG("%s: %d -> %d\n", __FUNCTION__, pboot_dev_sel, sel);
+	if (sel == pboot_dev_sel || sel >= pboot_dev_count)
+		return;
+	pboot_dev_sel = sel;
+	pboot_rpane->focus_curindex = -1;
+	pboot_rpane->mouse_target = -1;
+	pboot_rpane->focus_box.top = -2*PBOOT_RIGHT_FOCUS_HEIGHT;
+	pboot_rpane->focus_box.bottom = pboot_rpane->focus_box.top +
+		PBOOT_RIGHT_FOCUS_HEIGHT;
+	twin_window_damage(pboot_rpane->window, 0, 0,
+			   pboot_rpane->window->pixmap->width,
+			   pboot_rpane->window->pixmap->height);
+	twin_window_queue_paint(pboot_rpane->window);
+}
+
+static twin_time_t pboot_lfocus_timeout (twin_time_t now, void *closure)
+{
+	int dir = 1, dist, pos;
+	const int accel[11] = { 7, 4, 2, 1, 1, 1, 1, 2, 3, 4, 5 };
+
+	dist = abs(pboot_lpane->focus_target - pboot_lpane->focus_start);
+	pos = pboot_lpane->focus_target - (int)pboot_lpane->focus_box.top;
+	if (pos == 0) {
+		pboot_set_device_select(pboot_lpane->focus_curindex);
+		return -1;
+	}
+	if (pos < 0) {
+		dir = -1;
+		pos = -pos;
+	}
+	twin_window_damage(pboot_lpane->window,
+			   pboot_lpane->focus_box.left,
+			   pboot_lpane->focus_box.top,
+			   pboot_lpane->focus_box.right,
+			   pboot_lpane->focus_box.bottom);
+
+	pboot_lpane->focus_box.top += dir;
+	pboot_lpane->focus_box.bottom += dir;
+
+	twin_window_damage(pboot_lpane->window,
+			   pboot_lpane->focus_box.left,
+			   pboot_lpane->focus_box.top,
+			   pboot_lpane->focus_box.right,
+			   pboot_lpane->focus_box.bottom);
+
+	twin_window_queue_paint(pboot_lpane->window);
+
+	return accel[(pos * 10) / dist];
+}
+
+static void pboot_set_lfocus(int index)
+{
+	if (index >= pboot_dev_count)
+		return;
+
+	pboot_lpane->focus_start = pboot_lpane->focus_box.top;
+
+	if (index < 0)
+		pboot_lpane->focus_target = 0 - PBOOT_LEFT_FOCUS_HEIGHT;
+	else
+		pboot_lpane->focus_target = PBOOT_LEFT_FOCUS_YOFF +
+			PBOOT_LEFT_ICON_STRIDE * index;
+
+	pboot_lpane->focus_curindex = index;
+
+	twin_set_timeout(pboot_lfocus_timeout, 0, NULL);
+}
+
+static void pboot_lpane_mousetrack(twin_coord_t x, twin_coord_t y)
+{
+	int candidate = -1;
+	twin_coord_t icon_top;
+
+	if (x < PBOOT_LEFT_ICON_XOFF ||
+	    x > (PBOOT_LEFT_ICON_XOFF + PBOOT_LEFT_ICON_WIDTH))
+		goto miss;
+	if (y < PBOOT_LEFT_ICON_YOFF)
+		goto miss;
+	candidate = (y - PBOOT_LEFT_ICON_YOFF) / PBOOT_LEFT_ICON_STRIDE;
+	if (candidate >= pboot_dev_count) {
+		candidate = -1;
+		goto miss;
+	}
+	if (candidate == pboot_lpane->mouse_target)
+		return;
+	icon_top = PBOOT_LEFT_ICON_YOFF +
+		candidate * PBOOT_LEFT_ICON_STRIDE;
+	if (y > (icon_top + PBOOT_LEFT_ICON_HEIGHT)) {
+		candidate = -1;
+		goto miss;
+	}
+
+	/* Ok, so now, we know the mouse hit an icon that wasn't the same
+	 * as the previous one, we trigger a focus change
+	 */
+	pboot_set_lfocus(candidate);
+
+ miss:
+	pboot_lpane->mouse_target = candidate;
+}
+
+static twin_bool_t pboot_lpane_event (twin_window_t	    *window,
+				      twin_event_t	    *event)
+{
+	/* filter out all mouse events */
+	switch(event->kind) {
+	case TwinEventEnter:
+	case TwinEventMotion:
+	case TwinEventLeave:
+		pboot_select_lpane();
+		pboot_lpane_mousetrack(event->u.pointer.x, event->u.pointer.y);
+		return TWIN_TRUE;
+	case TwinEventButtonDown:
+	case TwinEventButtonUp:
+		return TWIN_TRUE;
+	case TwinEventKeyDown:
+		switch(event->u.key.key) {
+		case KEY_UP:
+			if (pboot_lpane->focus_curindex > 0)
+				pboot_set_lfocus(
+					pboot_lpane->focus_curindex - 1);
+			return TWIN_TRUE;
+		case KEY_DOWN:
+			pboot_set_lfocus(pboot_lpane->focus_curindex + 1);
+			return TWIN_TRUE;
+		case KEY_RIGHT:
+			pboot_select_rpane();
+			return TWIN_TRUE;
+		default:
+			break;
+		}
+		break;
+	default:
+		break;
+	}
+	return TWIN_FALSE;
+}
+
+twin_bool_t pboot_event_filter(twin_screen_t	    *screen,
+			       twin_event_t	    *event)
+{
+	switch(event->kind) {
+	case TwinEventEnter:
+	case TwinEventMotion:
+	case TwinEventLeave:
+	case TwinEventButtonDown:
+	case TwinEventButtonUp:
+		if (pboot_cursor != NULL)
+			twin_screen_set_cursor(pboot_screen, pboot_cursor,
+					       pboot_cursor_hx,
+					       pboot_cursor_hy);
+		break;
+	case TwinEventKeyDown:
+	case TwinEventKeyUp:
+		twin_screen_set_cursor(pboot_screen, NULL, 0, 0);
+		break;
+	default:
+		break;
+	}
+	return TWIN_FALSE;
+}
+
+static void pboot_lpane_draw(twin_window_t *window)
+{
+	twin_pixmap_t	*px = window->pixmap;
+	pboot_lpane_t	*lpane = window->client_data;
+	twin_path_t	*path;
+	twin_fixed_t	x, y, w, h;
+	int		i;
+
+	/* Fill background */
+	twin_fill(px, PBOOT_LEFT_PANE_COLOR, TWIN_SOURCE,
+		  0, 0, px->width, px->height);
+
+	/* Create a path for use later */
+	path = twin_path_create();
+	assert(path);
+
+	/* Draw right line if needed */
+	if (px->clip.right > (PBOOT_LEFT_PANE_SIZE - 4)) {
+		x = twin_int_to_fixed(PBOOT_LEFT_PANE_SIZE - 4);
+		y = twin_int_to_fixed(px->height);
+		twin_path_rectangle(path, x, 0, 0x40000, y);
+		twin_paint_path(px, PBOOT_LEFT_LINE_COLOR, path);
+		twin_path_empty(path);
+	}
+
+	/* Draw focus box */
+	if (lpane->focus_curindex >= 0 &&
+	    twin_rect_intersect(lpane->focus_box, px->clip)) {
+		x = twin_int_to_fixed(lpane->focus_box.left + 2);
+		y = twin_int_to_fixed(lpane->focus_box.top + 2);
+		w = twin_int_to_fixed(lpane->focus_box.right -
+				      lpane->focus_box.left - 4);
+		h = twin_int_to_fixed(lpane->focus_box.bottom -
+				      lpane->focus_box.top - 4);
+		twin_path_rounded_rectangle(path, x, y, w, h,
+					    PBOOT_LEFT_FOCUS_XRAD,
+					    PBOOT_LEFT_FOCUS_YRAD);
+		if (pboot_focus_lpane)
+			twin_paint_path(px, PBOOT_FOCUS_COLOR, path);
+		else
+			twin_paint_stroke(px, PBOOT_FOCUS_COLOR, path,
+					  4 * TWIN_FIXED_ONE);
+	}
+
+	/* Draw icons */
+	for (i = 0; i < pboot_dev_count; i++) {
+		pboot_device_t	*dev = pboot_devices[i];
+		twin_operand_t	src;
+
+		if (!twin_rect_intersect(dev->box, px->clip))
+			continue;
+
+		src.source_kind = TWIN_PIXMAP;
+		src.u.pixmap = dev->badge;
+
+		twin_composite(px, dev->box.left, dev->box.top,
+			       &src, 0, 0, NULL, 0, 0, TWIN_OVER,
+			       dev->box.right - dev->box.left,
+			       dev->box.bottom - dev->box.top);
+
+	}
+
+	/* Destroy path */
+	twin_path_destroy(path);
+}
+
+static void pboot_create_panels(void)
+{
+	/* left pane */
+	pboot_lpane = calloc(1, sizeof(pboot_lpane_t));
+	assert(pboot_lpane);
+
+	pboot_lpane->window = twin_window_create(pboot_screen, TWIN_ARGB32,
+						 TwinWindowPlain,
+						 0, 0, PBOOT_LEFT_PANE_SIZE,
+						 pboot_screen->height);
+	assert(pboot_lpane->window);
+
+	pboot_lpane->window->draw = pboot_lpane_draw;
+	pboot_lpane->window->event = pboot_lpane_event;
+	pboot_lpane->window->client_data = pboot_lpane;
+	pboot_lpane->focus_curindex = -1;
+	pboot_lpane->focus_box.left = PBOOT_LEFT_FOCUS_XOFF;
+	pboot_lpane->focus_box.top = -2*PBOOT_LEFT_FOCUS_HEIGHT;
+	pboot_lpane->focus_box.right = pboot_lpane->focus_box.left +
+		PBOOT_LEFT_FOCUS_WIDTH;
+	pboot_lpane->focus_box.bottom = pboot_lpane->focus_box.top +
+		PBOOT_LEFT_FOCUS_HEIGHT;
+	pboot_lpane->mouse_target = -1;
+	twin_window_show(pboot_lpane->window);
+
+	/* right pane */
+	pboot_rpane = calloc(1, sizeof(pboot_rpane_t));
+	assert(pboot_rpane);
+
+	pboot_rpane->window = twin_window_create(pboot_screen, TWIN_ARGB32,
+						 TwinWindowPlain,
+						 PBOOT_LEFT_PANE_SIZE, 0,
+						 pboot_screen->width -
+						   PBOOT_LEFT_PANE_SIZE,
+						 pboot_screen->height);
+	assert(pboot_rpane->window);
+
+	pboot_rpane->window->draw = pboot_rpane_draw;
+	pboot_rpane->window->event = pboot_rpane_event;
+	pboot_rpane->window->client_data = pboot_rpane;
+
+	pboot_rpane->focus_curindex = -1;
+	pboot_rpane->focus_box.left = PBOOT_RIGHT_FOCUS_XOFF;
+	pboot_rpane->focus_box.top = -2*PBOOT_RIGHT_FOCUS_HEIGHT;
+	pboot_rpane->focus_box.right = pboot_rpane->window->pixmap->width -
+		2 * PBOOT_RIGHT_FOCUS_XOFF;
+	pboot_rpane->focus_box.bottom = pboot_rpane->focus_box.top +
+		PBOOT_RIGHT_FOCUS_HEIGHT;
+	pboot_rpane->mouse_target = -1;
+	twin_window_show(pboot_rpane->window);
+}
+
+int pboot_add_device(const char *dev_id, const char *name,
+		twin_pixmap_t *pixmap)
+{
+	int		index;
+	pboot_device_t	*dev;
+
+	if (pboot_dev_count >= PBOOT_MAX_DEV)
+		return -1;
+
+	index = pboot_dev_count++;
+
+	dev = malloc(sizeof(*dev));
+	memset(dev, 0, sizeof(*dev));
+	dev->id = malloc(strlen(dev_id) + 1);
+	strcpy(dev->id, dev_id);
+	dev->badge = pixmap;
+	dev->box.left = PBOOT_LEFT_ICON_XOFF;
+	dev->box.right = dev->box.left + PBOOT_LEFT_ICON_WIDTH;
+	dev->box.top = PBOOT_LEFT_ICON_YOFF +
+		PBOOT_LEFT_ICON_STRIDE * index;
+	dev->box.bottom = dev->box.top + PBOOT_LEFT_ICON_HEIGHT;
+
+	pboot_devices[index] = dev;
+
+	twin_window_damage(pboot_lpane->window,
+			   dev->box.left, dev->box.top,
+			   dev->box.right, dev->box.bottom);
+	twin_window_queue_paint(pboot_lpane->window);
+
+	return index;
+}
+
+int pboot_remove_device(const char *dev_id)
+{
+	int		i, new_dev_index;
+	pboot_device_t	*dev = NULL;
+
+	/* find the matching device */
+	for (i = 0; i < pboot_dev_count; i++) {
+		if (!strcmp(pboot_devices[i]->id, dev_id)) {
+			dev = pboot_devices[i];
+			break;
+		}
+	}
+
+	if (!dev)
+		return TWIN_FALSE;
+
+	/* select the newly-focussed device */
+	if (i == pboot_dev_count - 1)
+		new_dev_index = i - 1;
+	else
+		new_dev_index = i + 1;
+
+	memmove(pboot_devices + i, pboot_devices + i + 1,
+			sizeof(*pboot_devices) * (pboot_dev_count + i - 1));
+
+	pboot_devices[--pboot_dev_count] = NULL;
+
+	pboot_set_device_select(new_dev_index);
+	twin_window_damage(pboot_lpane->window,
+			   dev->box.left, dev->box.top,
+			   dev->box.right, dev->box.bottom);
+	twin_window_queue_paint(pboot_lpane->window);
+
+	/* todo: free device & options */
+
+	return TWIN_TRUE;
+}
+
+static void exitfunc(void)
+{
+	if (pboot_fbdev)
+		twin_fbdev_destroy(pboot_fbdev);
+	pboot_fbdev = NULL;
+}
+
+static void sigint(int sig)
+{
+	exitfunc();
+	syscall(__NR_exit);
+}
+
+int main(int argc, char **argv)
+{
+	twin_pixmap_t *pic;
+
+	atexit(exitfunc);
+	signal(SIGINT, sigint);
+
+#ifdef _USE_X11
+	pboot_x11 = twin_x11_create(XOpenDisplay(0), 1024, 768);
+	if (pboot_x11 == NULL) {
+		perror("failed to create x11 screen !\n");
+		return 1;
+	}
+	pboot_screen = pboot_x11->screen;
+#else
+	/* Create screen and mouse drivers */
+	pboot_fbdev = twin_fbdev_create(-1, SIGUSR1);
+	if (pboot_fbdev == NULL) {
+		perror("failed to create fbdev screen !\n");
+		return 1;
+	}
+	pboot_screen = pboot_fbdev->screen;
+	twin_linux_mouse_create(NULL, pboot_screen);
+#endif
+
+	if (pboot_fbdev != NULL) {
+		pboot_cursor = twin_load_X_cursor("artwork/cursor", 2,
+						  &pboot_cursor_hx,
+						  &pboot_cursor_hy);
+		if (pboot_cursor == NULL)
+			pboot_cursor =
+				twin_get_default_cursor(&pboot_cursor_hx,
+							&pboot_cursor_hy);
+	}
+
+	/* Set background pixmap */
+	LOG("loading background...");
+	pic = twin_png_to_pixmap("artwork/background.png", TWIN_ARGB32);
+	LOG("%s\n", pic ? "ok" : "failed");
+	if (pic)
+		twin_screen_set_background(pboot_screen, pic);
+
+	/* Init more stuffs */
+	pboot_create_panels();
+	twin_window_queue_paint(pboot_lpane->window);
+	twin_window_queue_paint(pboot_rpane->window);
+
+	if (!pboot_start_device_discovery()) {
+		LOG("Couldn't start device discovery!\n");
+		return 1;
+	}
+
+	pboot_set_lfocus(0);
+	twin_screen_set_active(pboot_screen, pboot_lpane->window->pixmap);
+	pboot_screen->event_filter = pboot_event_filter;
+
+	/* Console switch */
+	if (pboot_fbdev)
+		twin_fbdev_activate(pboot_fbdev);
+
+	/* Process events */
+	twin_dispatch ();
+
+	return 0;
+}
diff --git a/petitboot.h b/petitboot.h
new file mode 100644
index 0000000..aeac73b
--- /dev/null
+++ b/petitboot.h
@@ -0,0 +1,15 @@
+
+#include <libtwin/twin.h>
+
+#define LOG(fmt...)	printf(fmt)
+
+#define PBOOT_MAX_DEV		16
+#define PBOOT_MAX_OPTION	16
+
+int pboot_add_device(const char *dev_id, const char *name,
+		twin_pixmap_t *pixmap);
+int pboot_add_option(int devindex, const char *title,
+		const char *subtitle, twin_pixmap_t *badge);
+int pboot_remove_device(const char *dev_id);
+
+int pboot_start_device_discovery(void);