1 files changed, 37 insertions, 0 deletions
diff --git a/target/linux/bmips/image/lzma-loader/src/board.c b/target/linux/bmips/image/lzma-loader/src/board.c
new file mode 100644
index 0000000000..8319cf1579
--- /dev/null
+++ b/target/linux/bmips/image/lzma-loader/src/board.c
@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * BCM63XX specific implementation parts
+ *
+ * Copyright (C) 2020 Álvaro Fernández Rojas <noltari@gmail.com>
+ * Copyright (C) 2014 Jonas Gorski <jogo@openwrt.org>
+ */
+
+#include <stddef.h>
+#include "config.h"
+
+#define READREG(r)	*(volatile unsigned int *)(r)
+#define WRITEREG(r,v)	*(volatile unsigned int *)(r) = v
+
+#define UART_IR_REG	0x10
+#define UART_FIFO_REG	0x14
+
+static void wait_xfered(void)
+{
+        unsigned int val;
+
+        do {
+                val = READREG(UART_BASE + UART_IR_REG);
+                if (val & (1 << 5))
+                        break;
+        } while (1);
+}
+
+void board_putc(int ch)
+{
+	if (!UART_BASE)
+		return;
+
+	wait_xfered();
+	WRITEREG(UART_BASE + UART_FIFO_REG, ch);
+	wait_xfered();
+}