1 files changed, 102 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c2410/include/mach/debug-macro.S b/arch/arm/mach-s3c2410/include/mach/debug-macro.S
new file mode 100644
index 00000000000..682df23087a
--- /dev/null
+++ b/arch/arm/mach-s3c2410/include/mach/debug-macro.S
@@ -0,0 +1,102 @@
+/* arch/arm/mach-s3c2410/include/mach/debug-macro.S
+ *
+ * Debugging macro include header
+ *
+ *  Copyright (C) 1994-1999 Russell King
+ *  Copyright (C) 2005 Simtec Electronics
+ *
+ *  Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
+ *
+ * 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.
+*/
+
+#include <mach/map.h>
+#include <mach/regs-gpio.h>
+#include <asm/plat-s3c/regs-serial.h>
+
+#define S3C2410_UART1_OFF (0x4000)
+#define SHIFT_2440TXF (14-9)
+
+	.macro addruart, rx
+		mrc	p15, 0, \rx, c1, c0
+		tst	\rx, #1
+		ldreq	\rx, = S3C24XX_PA_UART
+		ldrne	\rx, = S3C24XX_VA_UART
+#if CONFIG_DEBUG_S3C_UART != 0
+		add	\rx, \rx, #(S3C2410_UART1_OFF * CONFIG_DEBUG_S3C_UART)
+#endif
+	.endm
+
+	.macro fifo_full_s3c24xx rd, rx
+		@ check for arm920 vs arm926. currently assume all arm926
+		@ devices have an 64 byte FIFO identical to the s3c2440
+		mrc	p15, 0, \rd, c0, c0
+		and	\rd, \rd, #0xff0
+		teq	\rd, #0x260
+		beq	1004f
+		mrc	p15, 0, \rd, c1, c0
+		tst	\rd, #1
+		addeq	\rd, \rx, #(S3C24XX_PA_GPIO - S3C24XX_PA_UART)
+		addne	\rd, \rx, #(S3C24XX_VA_GPIO - S3C24XX_VA_UART)
+		bic	\rd, \rd, #0xff000
+		ldr	\rd, [ \rd, # S3C2410_GSTATUS1 - S3C2410_GPIOREG(0) ]
+		and	\rd, \rd, #0x00ff0000
+		teq	\rd, #0x00440000		@ is it 2440?
+1004:
+		ldr	\rd, [ \rx, # S3C2410_UFSTAT ]
+		moveq	\rd, \rd, lsr #SHIFT_2440TXF
+		tst	\rd, #S3C2410_UFSTAT_TXFULL
+	.endm
+
+	.macro  fifo_full_s3c2410 rd, rx
+		ldr	\rd, [ \rx, # S3C2410_UFSTAT ]
+		tst	\rd, #S3C2410_UFSTAT_TXFULL
+	.endm
+
+/* fifo level reading */
+
+	.macro fifo_level_s3c24xx rd, rx
+		@ check for arm920 vs arm926. currently assume all arm926
+		@ devices have an 64 byte FIFO identical to the s3c2440
+		mrc	p15, 0, \rd, c0, c0
+		and	\rd, \rd, #0xff0
+		teq	\rd, #0x260
+		beq	10000f
+		mrc	p15, 0, \rd, c1, c0
+		tst	\rd, #1
+		addeq	\rd, \rx, #(S3C24XX_PA_GPIO - S3C24XX_PA_UART)
+		addne	\rd, \rx, #(S3C24XX_VA_GPIO - S3C24XX_VA_UART)
+		bic	\rd, \rd, #0xff000
+		ldr	\rd, [ \rd, # S3C2410_GSTATUS1 - S3C2410_GPIOREG(0) ]
+		and	\rd, \rd, #0x00ff0000
+		teq	\rd, #0x00440000		@ is it 2440?
+
+10000:
+		ldr	\rd, [ \rx, # S3C2410_UFSTAT ]
+		andne	\rd, \rd, #S3C2410_UFSTAT_TXMASK
+		andeq	\rd, \rd, #S3C2440_UFSTAT_TXMASK
+	.endm
+
+	.macro fifo_level_s3c2410 rd, rx
+		ldr	\rd, [ \rx, # S3C2410_UFSTAT ]
+		and	\rd, \rd, #S3C2410_UFSTAT_TXMASK
+	.endm
+
+/* Select the correct implementation depending on the configuration. The
+ * S3C2440 will get selected by default, as these are the most widely
+ * used variants of these
+*/
+
+#if defined(CONFIG_CPU_LLSERIAL_S3C2410_ONLY)
+#define fifo_full  fifo_full_s3c2410
+#define fifo_level fifo_level_s3c2410
+#elif !defined(CONFIG_CPU_LLSERIAL_S3C2440_ONLY)
+#define fifo_full  fifo_full_s3c24xx
+#define fifo_level fifo_level_s3c24xx
+#endif
+
+/* include the reset of the code which will do the work */
+
+#include <asm/plat-s3c/debug-macro.S>