[build] Rename gPXE to iPXE

Access to the gpxe.org and etherboot.org domains and associated
resources has been revoked by the registrant of the domain.  Work
around this problem by renaming project from gPXE to iPXE, and
updating URLs to match.

Also update README, LOG and COPYRIGHTS to remove obsolete information.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

1 files changed, 85 insertions, 0 deletions

diff --git a/src/include/ipxe/bitmap.h b/src/include/ipxe/bitmap.h
new file mode 100644
index 000000000..38d1f221d
--- /dev/null
+++ b/src/include/ipxe/bitmap.h
@@ -0,0 +1,85 @@
+#ifndef _IPXE_BITMAP_H
+#define _IPXE_BITMAP_H
+
+/** @file
+ *
+ * Bitmaps for multicast downloads
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+/** A single block of bits within a bitmap */
+typedef unsigned long bitmap_block_t;
+
+/** Size of a block of bits (in bits) */
+#define BITMAP_BLKSIZE ( sizeof ( bitmap_block_t ) * 8 )
+
+/**
+ * Block index within bitmap
+ *
+ * @v bit		Bit index
+ * @ret index		Block index
+ */
+#define BITMAP_INDEX( bit ) ( (bit) / BITMAP_BLKSIZE )
+
+/**
+ * Block mask within bitmap
+ *
+ * @v bit		Bit index
+ * @ret mask		Block mask
+ */
+#define BITMAP_MASK( bit ) ( 1 << ( (bit) % BITMAP_BLKSIZE ) )
+
+/** A bitmap */
+struct bitmap {
+	/** Bitmap data */
+	bitmap_block_t *blocks;
+	/** Length of the bitmap, in bits */
+	unsigned int length;
+	/** Index of first gap in the bitmap */
+	unsigned int first_gap;
+};
+
+extern int bitmap_resize ( struct bitmap *bitmap, unsigned int new_length );
+extern int bitmap_test ( struct bitmap *bitmap, unsigned int bit );
+extern void bitmap_set ( struct bitmap *bitmap, unsigned int bit );
+
+/**
+ * Free bitmap resources
+ *
+ * @v bitmap		Bitmap
+ */
+static inline void bitmap_free ( struct bitmap *bitmap ) {
+	free ( bitmap->blocks );
+}
+
+/**
+ * Get first gap within bitmap
+ *
+ * @v bitmap		Bitmap
+ * @ret first_gap	First gap
+ *
+ * The first gap is the first unset bit within the bitmap.
+ */
+static inline unsigned int bitmap_first_gap ( struct bitmap *bitmap ) {
+	return bitmap->first_gap;
+}
+
+/**
+ * Check to see if bitmap is full
+ *
+ * @v bitmap		Bitmap
+ * @ret is_full		Bitmap is full
+ *
+ * The bitmap is full if it has no gaps (i.e. no unset bits).
+ */
+static inline int bitmap_full ( struct bitmap *bitmap ) {
+	return ( bitmap->first_gap == bitmap->length );
+}
+
+#endif /* _IPXE_BITMAP_H */