v4.19.13 snapshot.
diff --git a/arch/arm/include/debug/clps711x.S b/arch/arm/include/debug/clps711x.S
new file mode 100644
index 0000000..c17ac5c
--- /dev/null
+++ b/arch/arm/include/debug/clps711x.S
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2014 Alexander Shiyan <shc_work@mail.ru>
+ *
+ * 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.
+ */
+
+#ifndef CONFIG_DEBUG_CLPS711X_UART2
+#define CLPS711X_UART_PADDR (0x80000000 + 0x0000)
+#define CLPS711X_UART_VADDR (0xfeff4000 + 0x0000)
+#else
+#define CLPS711X_UART_PADDR (0x80000000 + 0x1000)
+#define CLPS711X_UART_VADDR (0xfeff4000 + 0x1000)
+#endif
+
+#define SYSFLG (0x0140)
+#define SYSFLG_UBUSY (1 << 11)
+#define UARTDR (0x0480)
+
+ .macro addruart, rp, rv, tmp
+ ldr \rv, =CLPS711X_UART_VADDR
+ ldr \rp, =CLPS711X_UART_PADDR
+ .endm
+
+ .macro waituart,rd,rx
+ .endm
+
+ .macro senduart,rd,rx
+ str \rd, [\rx, #UARTDR]
+ .endm
+
+ .macro busyuart,rd,rx
+1001: ldr \rd, [\rx, #SYSFLG]
+ tst \rd, #SYSFLG_UBUSY
+ bne 1001b
+ .endm