v4.19.13 snapshot.
diff --git a/arch/arm/include/debug/sirf.S b/arch/arm/include/debug/sirf.S
new file mode 100644
index 0000000..630f231
--- /dev/null
+++ b/arch/arm/include/debug/sirf.S
@@ -0,0 +1,38 @@
+/*
+ * arch/arm/mach-prima2/include/mach/debug-macro.S
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#define SIRF_LLUART_TXFIFO_STATUS 0x0114
+#define SIRF_LLUART_TXFIFO_DATA 0x0118
+
+#define SIRF_LLUART_TXFIFO_FULL (1 << 5)
+
+#ifdef CONFIG_DEBUG_SIRFATLAS7_UART0
+#define SIRF_LLUART_TXFIFO_EMPTY (1 << 8)
+#else
+#define SIRF_LLUART_TXFIFO_EMPTY (1 << 6)
+#endif
+
+
+ .macro addruart, rp, rv, tmp
+ ldr \rp, =CONFIG_DEBUG_UART_PHYS @ physical
+ ldr \rv, =CONFIG_DEBUG_UART_VIRT @ virtual
+ .endm
+
+ .macro senduart,rd,rx
+ str \rd, [\rx, #SIRF_LLUART_TXFIFO_DATA]
+ .endm
+
+ .macro busyuart,rd,rx
+ .endm
+
+ .macro waituart,rd,rx
+1001: ldr \rd, [\rx, #SIRF_LLUART_TXFIFO_STATUS]
+ tst \rd, #SIRF_LLUART_TXFIFO_EMPTY
+ beq 1001b
+ .endm
+