1 files changed, 89 insertions, 0 deletions
diff --git a/arch/unicore32/kernel/debug-macro.S b/arch/unicore32/kernel/debug-macro.S
new file mode 100644
index 00000000..2711d6d8
--- /dev/null
+++ b/arch/unicore32/kernel/debug-macro.S
@@ -0,0 +1,89 @@
+/*
+ * linux/arch/unicore32/kernel/debug-macro.S
+ *
+ * Code specific to PKUnity SoC and UniCore ISA
+ *
+ * Copyright (C) 2001-2010 GUAN Xue-tao
+ *
+ * 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.
+ *
+ * Debugging macro include header
+ */
+#include <generated/asm-offsets.h>
+#include <mach/hardware.h>
+
+		.macro	put_word_ocd, rd, rx=r16
+1001:		movc		\rx, p1.c0, #0
+		cand.a	\rx, #2
+		bne	1001b
+		movc		p1.c1, \rd, #1
+		.endm
+
+#ifdef CONFIG_DEBUG_OCD
+		/* debug using UniCore On-Chip-Debugger */
+		.macro	addruart, rx
+		.endm
+
+		.macro	senduart, rd, rx
+		put_word_ocd	\rd, \rx
+		.endm
+
+		.macro	busyuart, rd, rx
+		.endm
+
+		.macro	waituart, rd, rx
+		.endm
+#else
+#define UART_CLK_DEFAULT        3686400 * 20
+	/* Uartclk = MCLK/ 2, The MCLK on my board is 3686400 * 40  */
+#define BAUD_RATE_DEFAULT	115200
+	/* The baud rate of the serial port */
+
+#define UART_DIVISOR_DEFAULT	(UART_CLK_DEFAULT \
+				/ (16 * BAUD_RATE_DEFAULT) - 1)
+
+		.macro	addruart,rx
+		mrc	p0, #0, \rx, c1, c0
+		tst	\rx, #1			@ MMU enabled?
+		moveq	\rx, #0xee000000	@ physical base address
+		movne	\rx, #0x6e000000	@ virtual address
+
+		@ We probe for the active serial port here
+		@ However, now we assume UART0 is active:	epip4d
+		@ We assume r1 and r2 can be clobbered.
+
+		movl 	r2, #UART_DIVISOR_DEFAULT
+		mov 	r1, #0x80
+		str	r1, [\rx, #UART_LCR_OFFSET]
+		and	r1, r2, #0xff00
+		mov	r1, r1, lsr #8
+		str	r1, [\rx, #UART_DLH_OFFSET]
+		and	r1, r2, #0xff
+		str	r1, [\rx, #UART_DLL_OFFSET]
+		mov 	r1, #0x7
+		str	r1, [\rx, #UART_FCR_OFFSET]
+		mov 	r1, #0x3
+		str	r1, [\rx, #UART_LCR_OFFSET]
+		mov 	r1, #0x0
+		str	r1, [\rx, #UART_IER_OFFSET]
+		.endm
+
+		.macro	senduart,rd,rx
+		str	\rd, [\rx, #UART_THR_OFFSET]
+		.endm
+
+		.macro	waituart,rd,rx
+1001:		ldr	\rd, [\rx, #UART_LSR_OFFSET]
+		tst	\rd, #UART_LSR_THRE
+		beq	1001b
+		.endm
+
+		.macro	busyuart,rd,rx
+1001:		ldr	\rd, [\rx, #UART_LSR_OFFSET]
+		tst	\rd, #UART_LSR_TEMT
+		bne	1001b
+		.endm
+#endif
+