1 files changed, 194 insertions, 0 deletions
diff --git a/payloads/libpayload/curses/pdcurses-backend/pdckbd.c b/payloads/libpayload/curses/pdcurses-backend/pdckbd.c
new file mode 100644
index 0000000000..4a039ffbc4
--- /dev/null
+++ b/payloads/libpayload/curses/pdcurses-backend/pdckbd.c
@@ -0,0 +1,194 @@
+/* Public Domain Curses */
+                          
+#include "lppdc.h"
+#include <usb/usb.h>
+
+unsigned long pdc_key_modifiers = 0L;
+
+#ifdef CONFIG_SERIAL_CONSOLE
+/* We treat serial like a vt100 terminal.  For now we
+   do the cooking in here, but we should probably eventually
+   pass it to dedicated vt100 code */
+
+static int getkeyseq(char *buffer, int len, int max)
+{
+	int i;
+
+	while (1) {
+		for(i = 0; i < 75; i++) {
+			if (serial_havechar())
+				break;
+			mdelay(1);
+		}
+
+		if (i == 75)
+			return len;
+
+		buffer[len++] = serial_getchar();
+		if (len == max)
+			return len;
+	}
+}
+
+static struct {
+	const char *seq;
+	int key;
+} escape_codes[] = {
+	{ "[A", KEY_UP },
+	{ "[B", KEY_DOWN },
+	{ "[C", KEY_RIGHT },
+	{ "[D", KEY_LEFT },
+	{ "[F", KEY_END },
+	{ "[H", KEY_HOME },
+	{ "[2~", KEY_IC },
+	{ "[3~", KEY_DC },
+	{ "[5~", KEY_PPAGE },
+	{ "[6~", KEY_NPAGE },
+	{ "OP", KEY_F(1) },
+	{ "OQ", KEY_F(2) },
+	{ "OR", KEY_F(3) },
+	{ "OS", KEY_F(4) },
+	{ "[15~", KEY_F(5) },
+	{ "[17~", KEY_F(6) },
+	{ "[18~", KEY_F(7) },
+	{ "[19~", KEY_F(8) },
+	{ "[20~", KEY_F(9) },
+	{ "[21~", KEY_F(10) },
+	{ "[23~", KEY_F(11) },
+	{ "[24~", KEY_F(12) },
+	{ NULL },
+};
+
+static int handle_escape(void)
+{
+	char buffer[5];
+	int len = getkeyseq(buffer, 0, sizeof(buffer));
+	int i, t;
+
+	if (len == 0)
+		return 27;
+
+	for(i = 0; escape_codes[i].seq != NULL; i++) {
+		const char *p = escape_codes[i].seq;
+
+		for(t = 0; t < len; t++) {
+			if (!*p || *p != buffer[t])
+				break;
+			p++;
+		}
+
+		if (t == len)
+			return escape_codes[i].key;
+	}
+
+	return 0;
+}
+
+static int cook_serial(unsigned char ch)
+{
+	switch(ch) {
+	case 8:
+		return KEY_BACKSPACE;
+
+	case 27:
+		return handle_escape();
+
+	default:
+		return ch;
+	}
+}
+#endif
+
+void PDC_set_keyboard_binary(bool on)
+{
+    PDC_LOG(("PDC_set_keyboard_binary() - called\n"));
+}
+
+/* check if a key event is waiting */
+
+bool PDC_check_key(void)
+{
+#ifdef CONFIG_USB_HID
+    usb_poll();
+    if ((curses_flags & F_ENABLE_CONSOLE) &&
+        usbhid_havechar()) {
+        return TRUE;
+    }
+#endif
+
+#ifdef CONFIG_PC_KEYBOARD
+    if ((curses_flags & F_ENABLE_CONSOLE) &&
+        keyboard_havechar()) {
+        return TRUE;
+    }
+#endif
+
+#ifdef CONFIG_SERIAL_CONSOLE
+    if ((curses_flags & F_ENABLE_SERIAL) &&
+        serial_havechar()) {
+        return TRUE;
+    }
+#endif
+
+    return FALSE;
+}
+
+/* return the next available key event */
+
+int PDC_get_key(void)
+{
+    int c = 0;
+
+#ifdef CONFIG_USB_HID
+    usb_poll();
+    if ((curses_flags & F_ENABLE_CONSOLE) &&
+        usbhid_havechar()) {
+        c = usbhid_getchar();
+    }
+#endif
+
+#ifdef CONFIG_PC_KEYBOARD
+    if ((curses_flags & F_ENABLE_CONSOLE) &&
+        keyboard_havechar()) {
+        c = keyboard_getchar();
+    }
+#endif
+
+#ifdef CONFIG_SERIAL_CONSOLE
+    if ((curses_flags & F_ENABLE_SERIAL) &&
+        serial_havechar()) {
+        c = cook_serial(serial_getchar());
+    }
+#endif
+
+    SP->key_code = FALSE;
+
+    if (c == 0) {
+        c = ERR;
+    }
+    if (c >= KEY_MIN) {
+        SP->key_code = TRUE;
+    }
+
+    return c;
+}
+
+/* discard any pending keyboard input -- this is the core 
+   routine for flushinp() */
+
+void PDC_flushinp(void)
+{
+    PDC_LOG(("PDC_flushinp() - called\n"));
+
+    while (PDC_check_key()) PDC_get_key();
+}
+
+int PDC_mouse_set(void)
+{
+    return ERR;
+}
+
+int PDC_modifiers_set(void)
+{
+    return OK;
+}