1 files changed, 39 insertions, 0 deletions
diff --git a/arch/arm/mach-iop32x/include/mach/uncompress.h b/arch/arm/mach-iop32x/include/mach/uncompress.h
new file mode 100644
index 000000000..ed4ac3e28
--- /dev/null
+++ b/arch/arm/mach-iop32x/include/mach/uncompress.h
@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * arch/arm/mach-iop32x/include/mach/uncompress.h
+ */
+
+#include <asm/types.h>
+#include <asm/mach-types.h>
+#include <linux/serial_reg.h>
+#include <mach/hardware.h>
+
+volatile u8 *uart_base;
+
+#define TX_DONE		(UART_LSR_TEMT | UART_LSR_THRE)
+
+static inline void putc(char c)
+{
+	while ((uart_base[UART_LSR] & TX_DONE) != TX_DONE)
+		barrier();
+	uart_base[UART_TX] = c;
+}
+
+static inline void flush(void)
+{
+}
+
+static __inline__ void __arch_decomp_setup(unsigned long arch_id)
+{
+	if (machine_is_iq80321())
+		uart_base = (volatile u8 *)IQ80321_UART;
+	else if (machine_is_iq31244() || machine_is_em7210())
+		uart_base = (volatile u8 *)IQ31244_UART;
+	else
+		uart_base = (volatile u8 *)0xfe800000;
+}
+
+/*
+ * nothing to do
+ */
+#define arch_decomp_setup()	__arch_decomp_setup(arch_id)