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-rw-r--r--arch/arm/include/debug/icedcc.S90
1 files changed, 90 insertions, 0 deletions
diff --git a/arch/arm/include/debug/icedcc.S b/arch/arm/include/debug/icedcc.S
new file mode 100644
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--- /dev/null
+++ b/arch/arm/include/debug/icedcc.S
@@ -0,0 +1,90 @@
+/*
+ * arch/arm/include/debug/icedcc.S
+ *
+ * Copyright (C) 1994-1999 Russell King
+ *
+ * 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.
+ *
+ */
+
+ @@ debug using ARM EmbeddedICE DCC channel
+
+ .macro addruart, rp, rv, tmp
+ .endm
+
+#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K) || defined(CONFIG_CPU_V7)
+
+ .macro senduart, rd, rx
+ mcr p14, 0, \rd, c0, c5, 0
+ .endm
+
+ .macro busyuart, rd, rx
+1001:
+ mrc p14, 0, \rx, c0, c1, 0
+ tst \rx, #0x20000000
+ beq 1001b
+ .endm
+
+ .macro waituart, rd, rx
+ mov \rd, #0x2000000
+1001:
+ subs \rd, \rd, #1
+ bmi 1002f
+ mrc p14, 0, \rx, c0, c1, 0
+ tst \rx, #0x20000000
+ bne 1001b
+1002:
+ .endm
+
+#elif defined(CONFIG_CPU_XSCALE)
+
+ .macro senduart, rd, rx
+ mcr p14, 0, \rd, c8, c0, 0
+ .endm
+
+ .macro busyuart, rd, rx
+1001:
+ mrc p14, 0, \rx, c14, c0, 0
+ tst \rx, #0x10000000
+ beq 1001b
+ .endm
+
+ .macro waituart, rd, rx
+ mov \rd, #0x10000000
+1001:
+ subs \rd, \rd, #1
+ bmi 1002f
+ mrc p14, 0, \rx, c14, c0, 0
+ tst \rx, #0x10000000
+ bne 1001b
+1002:
+ .endm
+
+#else
+
+ .macro senduart, rd, rx
+ mcr p14, 0, \rd, c1, c0, 0
+ .endm
+
+ .macro busyuart, rd, rx
+1001:
+ mrc p14, 0, \rx, c0, c0, 0
+ tst \rx, #2
+ beq 1001b
+
+ .endm
+
+ .macro waituart, rd, rx
+ mov \rd, #0x2000000
+1001:
+ subs \rd, \rd, #1
+ bmi 1002f
+ mrc p14, 0, \rx, c0, c0, 0
+ tst \rx, #2
+ bne 1001b
+1002:
+ .endm
+
+#endif /* CONFIG_CPU_V6 */