1 files changed, 47 insertions, 0 deletions
diff --git a/purgatory/arch/ia64/console-ia64.c b/purgatory/arch/ia64/console-ia64.c
new file mode 100644
index 0000000..99d97ca
--- /dev/null
+++ b/purgatory/arch/ia64/console-ia64.c
@@ -0,0 +1,47 @@
+#include <purgatory.h>
+#include "io.h"
+
+#define VGABASE         UNCACHED(0xb8000)
+
+/* code based on i386 console code
+ * TODO add serial support
+ */
+#define MAX_YPOS        25
+#define MAX_XPOS        80
+
+unsigned long current_ypos = 1, current_xpos = 0;
+
+static void putchar_vga(int ch)
+{
+	int  i, k, j;
+
+	if (current_ypos >= MAX_YPOS) {
+		/* scroll 1 line up */
+		for (k = 1, j = 0; k < MAX_YPOS; k++, j++) {
+			for (i = 0; i < MAX_XPOS; i++) {
+				writew(readw(VGABASE + 2*(MAX_XPOS*k + i)),
+						VGABASE + 2*(MAX_XPOS*j + i));
+			}
+		}
+		for (i = 0; i < MAX_XPOS; i++)
+			writew(0x720, VGABASE + 2*(MAX_XPOS*j + i));
+		current_ypos = MAX_YPOS-1;
+	}
+	if (ch == '\n') {
+		current_xpos = 0;
+		current_ypos++;
+	} else if (ch != '\r')  {
+		writew(((0x7 << 8) | (unsigned short) ch),
+				VGABASE + 2*(MAX_XPOS*current_ypos +
+					current_xpos++));
+		if (current_xpos >= MAX_XPOS) {
+			current_xpos = 0;
+			current_ypos++;
+		}
+	}
+}
+
+void putchar(int ch)
+{
+	putchar_vga(ch);
+}