1 files changed, 39 insertions, 0 deletions

diff --git a/include/asm-arm/arch-lh7a40x/debug-macro.S b/include/asm-arm/arch-lh7a40x/debug-macro.S
new file mode 100644
index 000000000000..421dcd6a8506
--- /dev/null
+++ b/include/asm-arm/arch-lh7a40x/debug-macro.S
@@ -0,0 +1,39 @@
+/* linux/include/asm-arm/arch-lh7a40x/debug-macro.S
+ *
+ * Debugging macro include header
+ *
+ *  Copyright (C) 1994-1999 Russell King
+ *  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.
+ *
+*/
+
+        @ It is not known if this will be appropriate for every 40x
+        @ board.
+
+                .macro  addruart,rx
+                mrc     p15, 0, \rx, c1, c0
+                tst     \rx, #1                 @ MMU enabled?
+                mov     \rx, #0x00000700        @ offset from base
+                orreq   \rx, \rx, #0x80000000   @ physical base
+                orrne   \rx, \rx, #0xf8000000   @ virtual base
+                .endm
+
+                .macro  senduart,rd,rx
+                strb    \rd, [\rx]              @ DATA
+                .endm
+
+                .macro  busyuart,rd,rx          @ spin while busy
+1001:           ldr     \rd, [\rx, #0x10]       @ STATUS
+                tst     \rd, #1 << 3            @ BUSY (TX FIFO not empty)
+                bne     1001b                   @ yes, spin
+                .endm
+
+                .macro  waituart,rd,rx          @ wait for Tx FIFO room
+1001:           ldrb    \rd, [\rx, #0x10]       @ STATUS
+                tst     \rd, #1 << 5            @ TXFF (TX FIFO full)
+                bne     1001b                   @ yes, spin
+                .endm