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authorLinus Torvalds <torvalds@linux-foundation.org>2008-08-08 11:38:42 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-08-08 11:38:42 -0700
commit49b75b87ce2dfbd99e59a50c3681b154d07e3a22 (patch)
treef14e1da19a13d87a512f9043c2f37fd75dd122b3 /arch/arm/mach-s3c2410/include/mach/debug-macro.S
parentf1c7f79b6ab4f7ada002a0fae47f462ede6b6857 (diff)
parent097d9eb537ff4d88b74c3fe67392e27c478ca3c5 (diff)
Merge branch 'for-linus-merged' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus-merged' of master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 5177/1: arm/mach-sa1100/Makefile: remove CONFIG_SA1100_USB [ARM] 5166/1: magician: add MAINTAINERS entry [ARM] fix pnx4008 build errors [ARM] Fix SMP booting with non-zero PHYS_OFFSET [ARM] 5185/1: Fix spi num_chipselect for lubbock [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach [ARM] Add support for arch/arm/mach-*/include and arch/arm/plat-*/include [ARM] Remove asm/hardware.h, use asm/arch/hardware.h instead [ARM] Eliminate useless includes of asm/mach-types.h [ARM] Fix circular include dependency with IRQ headers avr32: Use <mach/foo.h> instead of <asm/arch/foo.h> avr32: Introduce arch/avr32/mach-*/include/mach avr32: Move include/asm-avr32 to arch/avr32/include/asm [ARM] sa1100_wdt: use reset_status to remember watchdog reset status [ARM] pxa: introduce reset_status and clear_reset_status for driver's usage [ARM] pxa: introduce reset.h for reset specific header information
Diffstat (limited to 'arch/arm/mach-s3c2410/include/mach/debug-macro.S')
-rw-r--r--arch/arm/mach-s3c2410/include/mach/debug-macro.S102
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>