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authorOleksij Rempel <linux@rempel-privat.de>2014-11-24 12:08:28 +0100
committerArnd Bergmann <arnd@arndb.de>2014-11-28 15:08:06 +0100
commitd5bd4e8df43ca930ff3892963f6b3bf7984038e3 (patch)
tree39a129eee147cfe4de70561d1ddcd3daea0f1b03 /arch/arm/include/debug
parentd9bfc86dc69af78fb42fe075f9f2576880fd22a4 (diff)
ARM: add lolevel debug support for asm9260
Since there is no public documentation, this patch also provide register offsets for different UART units on this SoC. Signed-off-by: Oleksij Rempel <linux@rempel-privat.de> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/include/debug')
-rw-r--r--arch/arm/include/debug/asm9260.S29
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/arm/include/debug/asm9260.S b/arch/arm/include/debug/asm9260.S
new file mode 100644
index 000000000000..292f85b49fca
--- /dev/null
+++ b/arch/arm/include/debug/asm9260.S
@@ -0,0 +1,29 @@
+/* Debugging macro include header
+ *
+ * Copyright (C) 1994-1999 Russell King
+ * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
+ * Modified for ASM9260 by Oleksij Remepl <linux@rempel-privat.de>
+ *
+ * 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.
+ *
+ */
+
+ .macro addruart, rp, rv, tmp
+ ldr \rp, = CONFIG_DEBUG_UART_PHYS
+ ldr \rv, = CONFIG_DEBUG_UART_VIRT
+ .endm
+
+ .macro waituart,rd,rx
+ .endm
+
+ .macro senduart,rd,rx
+ str \rd, [\rx, #0x50] @ TXDATA
+ .endm
+
+ .macro busyuart,rd,rx
+1002: ldr \rd, [\rx, #0x60] @ STAT
+ tst \rd, #1 << 27 @ TXEMPTY
+ beq 1002b @ wait until transmit done
+ .endm