1 files changed, 37 insertions, 0 deletions
diff --git a/arch/arm/mach-zynq/include/mach/debug_ll.h b/arch/arm/mach-zynq/include/mach/debug_ll.h
new file mode 100644
index 0000000000..6c20dd534d
--- /dev/null
+++ b/arch/arm/mach-zynq/include/mach/debug_ll.h
@@ -0,0 +1,37 @@
+/*
+ * based on mach-imx/include/mach/debug_ll.h
+ */
+
+#ifndef __MACH_DEBUG_LL_H__
+#define __MACH_DEBUG_LL_H__
+
+#include <io.h>
+#include <mach/zynq7000-regs.h>
+
+#ifndef CONFIG_ZYNQ_DEBUG_LL_UART_BASE
+#warning define ZYNQ_DEBUG_LL_UART_BASE properly for debug_ll
+#define ZYNQ_DEBUG_LL_UART_BASE ZYNQ_UART1_BASE_ADDR
+#else
+#define ZYNQ_DEBUG_LL_UART_BASE CONFIG_ZYNQ_DEBUG_LL_UART_BASE
+#endif
+
+#define ZYNQ_UART_RXTXFIFO	0x30
+#define ZYNQ_UART_CHANNEL_STS	0x2C
+
+#define ZYNQ_UART_STS_TFUL	(1 << 4)
+#define ZYNQ_UART_TXDIS		(1 << 5)
+
+static inline void PUTC_LL(int c)
+{
+	void __iomem *base = (void __iomem *)ZYNQ_DEBUG_LL_UART_BASE;
+
+	if (readl(base) & ZYNQ_UART_TXDIS)
+		return;
+
+	while ((readl(base + ZYNQ_UART_CHANNEL_STS) & ZYNQ_UART_STS_TFUL) != 0)
+		;
+
+	writel(c, base + ZYNQ_UART_RXTXFIFO);
+}
+
+#endif