1 files changed, 35 insertions, 0 deletions

diff --git a/arch/arm/include/debug/picoxcell.S b/arch/arm/include/debug/picoxcell.S
new file mode 100644
index 00000000000..7419deb1b94
--- /dev/null
+++ b/arch/arm/include/debug/picoxcell.S
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2011 Picochip Ltd., Jamie Iles
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Derived from arch/arm/mach-davinci/include/mach/debug-macro.S to use 32-bit
+ * accesses to the 8250.
+ */
+#include <linux/serial_reg.h>
+
+#define UART_SHIFT 2
+#define PICOXCELL_UART1_BASE            0x80230000
+#define PHYS_TO_IO(x)                   (((x) & 0x00ffffff) | 0xfe000000)
+
+                .macro  addruart, rp, rv, tmp
+                ldr     \rv, =PHYS_TO_IO(PICOXCELL_UART1_BASE)
+                ldr     \rp, =PICOXCELL_UART1_BASE
+                .endm
+
+                .macro  senduart,rd,rx
+                str     \rd, [\rx, #UART_TX << UART_SHIFT]
+                .endm
+
+                .macro  busyuart,rd,rx
+1002:           ldr     \rd, [\rx, #UART_LSR << UART_SHIFT]
+                and     \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE
+                teq     \rd, #UART_LSR_TEMT | UART_LSR_THRE
+                bne     1002b
+                .endm
+
+                /* The UART's don't have any flow control IO's wired up. */
+                .macro  waituart,rd,rx
+                .endm